100% outside air dual duct (oadd) air handling unit (ahu

Application Note 100% Outside Air Dual Duct Air Handling Unit

Issue Date December 4, 2008

100% Outside Air Dual Duct (OADD) Air Handling Unit (AHU) Application Note

100% OADD AHU Application Note ..........................................................4

Introduction............................................................................................................4

Related Documentation.........................................................................................6

Key Concepts.........................................................................................................7

State Based Control ............................................................................................................. 7 Occupancy Determination.................................................................................................... 8 Temperature Control Strategies........................................................................................... 9

Discharge Air Temperature Control ............................................................................... 9 Discharge Air Temperature Reset by Outside Air Temperature..................................... 9

Occupied Control Schemes ............................................................................................... 10 Unoccupied Control Sequencers ....................................................................................... 13

Discharge Air Unoccupied Sequencer ......................................................................... 13 Sequencers........................................................................................................................ 16

Emergency Mode ......................................................................................................... 16 No Airflow..................................................................................................................... 17 Unit Enable................................................................................................................... 18 Start Stop Sequencer................................................................................................... 18 Energy Recovery Low Limit ......................................................................................... 21

Control of Staged Devices ................................................................................................. 22 Discharge Air Control of Staged Devices..................................................................... 22 Device Availability Determination................................................................................. 22

Output Device Control........................................................................................................ 23 Energy Recovery.......................................................................................................... 23 Preheat......................................................................................................................... 25 Heating......................................................................................................................... 29 Cooling ......................................................................................................................... 32 Supply Fan ................................................................................................................... 35 Exhaust Fan ................................................................................................................. 37 Humidification............................................................................................................... 39

PID Tuning ......................................................................................................................... 40 Integration Time ........................................................................................................... 40 Proportional Band ........................................................................................................ 40 Saturation Time............................................................................................................ 40

© 2008 Johnson Controls, Inc. www.johnsoncontrols.com Code No. LIT-12011291

100% OADD AHU Application Note 2

FX Builder Application Wizard Concepts ..........................................................42

Installing the OADD AHU Application Package ................................................................. 42 Selecting the OADD AHU Application Template................................................................ 45 Configuring the OADD AHU Application ............................................................................ 47

Configuring the Control Strategy.................................................................................. 47 Adjusting Setpoints ...................................................................................................... 50 Adjusting Parameters................................................................................................... 52 Adjusting Proportional Plus Integral plus Derivative (PID) Parameters........................ 55 Configuring the Internal Occupancy Schedule............................................................. 57 Viewing the Configuration Summary............................................................................ 58 Viewing Required Inputs and Outputs.......................................................................... 59

Selecting the User Interface(s) and Supervisor Interface .................................................. 60 Selecting the Target Device ............................................................................................... 61 Configuring the Hardware I/Os........................................................................................... 62 Generating the Application Files and Documentation ........................................................ 64

Viewing Generated Application and Documentation Files ........................................... 65 Reviewing an Exported Application File............................................................................. 65

FX CommPro Concepts.......................................................................................67

User Interface Concepts......................................................................................67

Medium User Interface....................................................................................................... 67 Medium User Interface Capabilities ............................................................................. 68 Medium User Interface Navigation............................................................................... 68 Status Folder................................................................................................................ 70 Modes Folder ............................................................................................................... 72 Configuration Folder..................................................................................................... 75 Setpoints Folder ........................................................................................................... 78 Parameters Folder ....................................................................................................... 79 PID Parameters Folder ................................................................................................ 81 Balancer Folder............................................................................................................ 82 Time Folder .................................................................................................................. 83 Schedulers Folder ........................................................................................................ 84 Password Folder .......................................................................................................... 84 MUI Status LEDs.......................................................................................................... 84 Accessing a Folder in the MUI ..................................................................................... 85 Changing a Configuration Setting, Setpoint, or Parameter in the MUI......................... 85

LCD2x4 User Interface....................................................................................................... 86 LCD2x4 User Interface Capabilities ............................................................................. 87 LCD2x4 User Interface Navigation............................................................................... 87 Config Page ................................................................................................................. 89 Analog Inputs Page...................................................................................................... 92 Digital Inputs Page ....................................................................................................... 93 Analog Outputs Page ................................................................................................... 93 Digital Outputs Page .................................................................................................... 94


Setpoints Page............................................................................................................. 95 Parameters 1 Page ...................................................................................................... 96 Parameters 2 Page ...................................................................................................... 98 PID Parameters Page .................................................................................................. 99 Modes Page ............................................................................................................... 100 Time Page.................................................................................................................. 102 Balancer Page............................................................................................................ 103 FX Setup .................................................................................................................... 104 Password Page .......................................................................................................... 105 Events Page............................................................................................................... 105 Schedulers Page........................................................................................................ 105 Graphical Status Icons ............................................................................................... 105 Accessing a Page in the LCD2x4 UI .......................................................................... 105 Changing a Configuration Setting, Setpoint, or Parameter in the LCD2x4 UI............ 106

Supervisor Interface ..........................................................................................107


100% OADD AHU Application Note

Introduction This application note introduces the standard 100% Outside Air Dual Duct (OADD) Air Handling Unit (AHU) controller application template, provides procedures to configure the application using FX Builder’s Application Wizard, and provides the procedures to commission the system using the Integral and Medium User Interface (MUI) and FX CommPro. The 100% OADD AHU application template consists of a single application software file which includes multiple configuration options and control strategies for controlling many different types of air handlers. You use FX Builder’s Application Wizard to select the specific configuration options and control strategies for your specific 100% OADD AHU control requirements. The available control strategy configuration options appear in Table 1.

Table 1: 100% OADD AHU Configuration Options Configuration Setting Allowable Options Temperature Control Strategy

Discharge Air Temperature (DAT) Control Discharge Air Temperature reset by Outside Air Temperature

Type of Energy Recovery None Glycol Loop (Proportional) Glycol Loop (2-Position) Energy Wheel (Proportional) Energy Wheel (2-Position)

Type of Cooling None Staged (up to four stages) Face & Bypass Damper (with 2-position or proportional valve) Proportional valve

Type of Preheat None Staged (up to four stages) Face & Bypass Damper (with 2-position or proportional valve) Proportional valve

Staged Preheat Control Type Equal Runtime First On/Last Off

Continued on next page . . .


Configuration Setting (Cont.)

Allowable Options

Staged Cooling Control Type Equal Runtime First On/Last Off

Type of Heating None Staged (up to 4 stages) Face & Bypass Damper (with 2-position valve) Proportional valve

Staged Heating Control Type Equal Runtime First On/Last Off

Supply Fan Type Constant Volume Variable Volume

Exhaust Fan Type None Constant Volume Supply Fan Tracking Building Pressure Control

Humidification Enable Disable

Alarm Options High Static Pressure Alarm Low Limit Alarm Supply Fan Proof Smoke Alarm

Reset After Loss of Airflow Manual Automatic

Power Fail Restart Enable Disable


Figure 1: Facility Explorer 100% OADD AHU Application Architecture

Related Documentation Table 2: Related Documentation For Information On See Document LIT or Part Number FX15 Overview Information FX15 Field Controller

Product Bulletin LIT-12011082

FX15 Technical Information FX15 Controller Technical Bulletin

LIT-12011107

FX16 Overview Information FX16 Master Controller Product Bulletin

LIT-12011084

FX16 Technical Information FX16 Master Controller Technical Bulletin

LIT-12011108


Key Concepts State Based Control

The 100% OADD AHU application uses State Based Control to ensure proper control of the air handling unit. State Based applications have the following components.

• Inputs: Extract information from the system. Examples include hardwired sensors (for example, discharge air temperature sensor), switches (for example, proof of airflow switch), and network overrides (for example, networked outside air temperature).

• Parameters: Refer to pieces of information stored inside the application. Examples include configuration settings, setpoints, unit parameters, and Proportional plus Integral plus Derivative (PID) parameters. Many parameters are adjustable.

• Miscellaneous Logic: Defines all logic not defined via a State Generator or Output Controller. Examples include occupancy determination and active setpoint determination.

• State Generators: Defines the sequences of operation for a specific control system. State generators need information from the appropriate inputs or parameters or status information from the output controllers to ensure proper sequencing.

• State Selector: Receives state information from all of the state generators. The state selector then determines the current set of output controller modes based on the current states of all the state generators.

• Output Controllers: Defines the operation of the output devices (for example, valves, dampers, and fans) based on the modes determined by the State Selector.

• Outputs: Converts the output controller information into action. Examples include valve and damper outputs, fan commands, and cooling and heating stage commands.

Figure 2: State Based Control Diagram


Occupancy Determination The 100% OADD AHU application:

• supports a local and network occupancy schedule with the network schedule having priority

• supports a local and network occupancy sensor with the network occupancy sensor having priority

• has a temporary occupancy input and a network occupancy manual command with the network occupancy manual command having priority

Table 3 displays the occupancy determination for the 100% OADD application.

Table 3: Occupancy Determination Inputs Result Occupancy Manual Command

Occupancy Schedule

Occupancy Sensor

Effective Occupancy

Occupied Occupied Unoccupied

− Unoccupied

Occupied Occupied Unoccupied Bypass Bypass Bypass Standby

−

Bypass Occupied Occupied

Bypass

Invalid Unoccupied Bypass

Standby − − Standby Occupied Occupied Unoccupied Standby

Occupied

Invalid Occupied Unoccupied Unoccupied Bypass Bypass Standby

−

Standby Occupied Occupied

Invalid

Invalid Unoccupied Unoccupied


Temperature Control Strategies The 100% OADD AHU application supports the following selectable temperature control strategies.

Discharge Air Temperature Control The 100% OADD AHU sequences the controlled devices to control the discharge air temperature to a constant setpoint.

Discharge Air Temperature Reset by Outside Air Temperature The 100% OADD AHU uses the outside air temperature to calculate a discharge air temperature setpoint. When the outside air is warm, both the cold deck and hot deck discharge air temperature setpoints reset down. When the outside air is cold, both the cold deck and hot deck discharge air temperature setpoints reset up. The 100% OADD AHU sequences the controlled devices to control the discharge air temperature to this calculated setpoint. Figure 3 displays a reset schedule for the cold deck air temperature setpoint.

Figure 3: Discharge Air Temperature Reset by Outside Air Temperature


Occupied Control Schemes The 100% OADD application uses two sequencers to control the heating and cooling devices. Energy recovery, preheat, and cooling is sequenced using the OA Occupied Sequencer and the heating is sequenced using the Hot Deck Sequencer. See Table 4 for OA Occupied Sequencer Modes and Table 5 for Hot Deck Sequencer Modes.

Table 4: OA Occupied Sequencer State Description Satisfied Enters this state when no heating or cooling is required. Cooling Enters this state when the mechanical cooling controls the discharge

air temperature, and the energy recovery is set to maximum. Energy Recovery

Enters this state if heating is required and energy recovery is available for heating. The energy recovery controls the discharge air temperature.

Preheat Enters this state when the preheat output controller controls the cold deck discharge air temperature to the cold deck temperature setpoint. The energy recovery is set to maximum while in the preheat state.

Heat Enters this state if either the preheat PID is saturated high, or the preheat output controller could not be controlled by this Finite State Machine (FSM). Both preheat and energy recovery are set to maximum while in this state.

Shutdown Enters this state if the process variable is unreliable. Output controller behavior is determined by several configuration settings.

Heating Idle Enters this state through Satisfied if heating is required. The output controllers hold their last value in this state. In this state, the OA Occupied Sequencer waits for the OA Start Stop Sequencer to sequence the fans and dampers. The OA Occupied Sequencer then allows the hot deck and cold deck discharge air temperatures to stabilize and obtain an accurate reading of the outside air, and exhaust air temperature determines whether heat recovery is suitable.

Table 5: Hot Deck Sequencer State Description Satisfied Enters this state when no heating or cooling is required. Heating Idle Enters this state through Satisfied whenever heating is required. In this

state, the output controllers hold their last value. This state is used to wait for the fans to start.

Control Enters this state from Heating Idle when the AHU has started the fans and it is ready for temperature control. In this state, the heating output controller controls the hot deck discharge air temperature to the hot deck setpoint.

Shutdown Enters this state if the process variable is unreliable. Output controller behavior is determined by several configuration settings.


Process variable unreliable Shutdown Process variable

reliable

Preheat

Heating required and Preheat PID saturated high

Heating required and this FSM cannot control

Preheat

Heating not required and this FSM cannot control

heating

Heating not required and Heat PID saturated low

Heating Control

Heat

Energy Recovery

Heating required and Energy

Recovery PID is saturated high

Heating required and this FSM cannot control

Energy Recovery

Heating not required and this FSM cannot control

preheat

Heating not required and Preheat PID

saturated low

Preheat is not active, and energy recovery device is modulated

Preheat is active, or energy recovery device

is not modulated

Heating is not required and this

FSM cannot control Energy Recovery

Heating is not required and Energy

Recovery PID is saturated low.

Heating is not required and Energy

Recovery is Two Position.

Heating Idle

Satisfied

Mech

Cooling not required and this FSM cannot control cooling

Cooling not required and cooling PID is saturated low

Cooling required and this FSM can control cooling

Preheat is active, but the AHU is not ready for temperature control

Heating is required

Heating is not required, and Preheat is not active

The AHU is not ready for temperature control

The AHU has started and the fans are ready for temperature control.

Figure 4: OA Occupied Sequencer


Heating is not required and this FSM cannot control Heat.

Heating is not required and Heat PID is saturated low.

Start

Heating not required Heating required

Heating Idle

Process variable unreliable

Shutdown

Process variable reliable

The AHU has started and the fans are ready for

temperature control.

T Control

Satisfied

Figure 5: Hot Deck Sequencer


Unoccupied Control Sequencers Discharge Air Unoccupied Sequencer The Discharge Air Unoccupied Sequencer generates the appropriate unoccupied temperature control state. Zone or exhaust air temperature is monitored and when heating or cooling is required, the AHU is allowed to start. The AHU provides conditioned air until the demand is satisfied and then the AHU shuts down.

See Table 6 for descriptions of the states. See Figure 6 and Figure 7 for a description of the process.

Table 6: Discharge Air Unoccupied Sequencer State Description Disabled Enters this state if Occupancy is not Unoccupied. Satisfied Enters this state if no unoccupied heating or cooling is required. Cool Enters this state if the zone temperature is greater than the

unoccupied cooling setpoint. The unoccupied sequencer then has authority to sequence heating and cooling devices for temperature control.

Heat Enters this state if the zone temperature is less than the unoccupied heating setpoint.

Shutdown Enters this state if the process variable is unreliable.


Figure 6: DAT Unoccupied Control Sequencer – Heating


Figure 7: DAT Unoccupied Control Sequencer – Cooling


Sequencers Emergency Mode The application uses the three safety switch inputs, and shutdown delay duration to determine the current emergency mode state. Table 7 displays the states in the Emergency Mode module. Figure 8 displays the emergency mode process.

Table 7: Emergency Mode State Description Normal Enters this state when no emergency response or shutdown is

required. Lower level state machines may control the outputs. Shutdown When in Shutdown mode, the actual states of the output controllers

depend on the Shutdown Action configuration settings.

Figure 8: Emergency Mode Sequencer


No Airflow The application monitors the supply fan command and proof of flow input and determines whether the current state is Normal, Manual Reset Fault, or Self Reset Fault. Table 8 displays the states in the No Airflow module. Figure 9 displays the emergency mode process.

Table 8: No Airflow State Description Normal Enters this state when the fan behavior matches the fan

command. Manual Reset Fault

Enters this state during the manual reset fault state. The application is in this state, because there is no proof of airflow and the unit requires manual intervention to restart.

Self Reset Fault Enters this state during the automatic reset fault state. The application is in this state, because there is no proof of airflow and the unit does not require manual intervention to restart.

Figure 9: No Airflow Sequencer


Unit Enable The Unit Enable module starts the unit. The state output is true when the unit is enabled and false when the unit is disabled. If the power fail restart is not enabled, then the state output matches the value of the unit enable input. If the power fail restart is enabled, then the state output is true (if the unit enable input is true and the unit has been powered for the power fail restart time). Table 9 displays the states in the Unit Enable module.

Table 9: Unit Enable State Description True Enters this state when the unit is enabled and allowed to run. False Enters this state when the unit is not enabled and not allowed to run.

Inputs Result Unit Enable Nvi Unit Enable Switch 0 Closed False 0 Open False 1 Closed False 1 Open True Invalid Closed False Invalid Open True

Start Stop Sequencer The Start Stop Sequencer module sequences the fans and dampers for a controlled start and stop. This module accepts several inputs used to initiate a start or stop sequence, such as Fan Required or Occupancy. This module:

• accepts several adjustable times, such as:

− Fan Start Delay –Refers to the time delay provided between issuing the start commands (supply and exhaust fans simultaneously) to when the fans start. This delay includes the time for the 2-position damper for each fan to open (for example, it assumes the damper is hard-wired with the fan starter).

− Stabilize Delay – Refers to the time allocated for the OA Temperature sensor to accurately reflect the outside conditions. This input is only applicable for constant capacity units because it is assumed that the time required for ramping the variable capacity supply fan to the static pressure setpoint is sufficient for the sensor to stabilize.

− Stop Delay - serves a dual purpose. The stop delay is the time delay between stopping of the first and second fan. The stop delay is also the time delay between stopping the second fan and allowing the system to restart.


• accepts inputs for static pressure, such as:

− Duct Static Pressure - refers to the supply air duct static pressure.

− Duct Static Press Setpoint - used to trigger a state change if the supply fan type is variable speed and static pressure control is used.

• accepts configuration inputs, such as:

− Supply Fan Type - indicates the air handler supply fan type. The module supports two supply fan types: variable capacity and constant capacity.

• supplies fan status inputs, such as:

− Proof of Airflow - indicates whether there is actual air flow.

− Supply Percent Cmd – refers to the supply fan output.

The Start Stop Sequencer module also has a state output and a fan ready indicator output. Use Table 10 to understand the states in the Start Stop Sequencer module.

Table 10: Start Stop Sequencer State Description Off In this state, the fans are off. The unit waits for the signal to begin

the startup sequence. The startup sequence begins if heating or cooling is required.

Start Fans In this state, the fans are started. Ramp SF In this state, a variable capacity supply fan is set to ramp so it

slowly speeds up and slowly increases the duct static pressure. The FSM switches to the On state when the duct static pressure is above the duct static pressure setpoint. Constant Capacity fans are kept in this state for the Stabilize Delay to allow the outside temperature to accurately sense the outside conditions prior to determining whether a Cold Start should become active.

Cold Start This state allows preheat to come into control while limiting the rate at which it can close to prevent tripping the low limit.

Normal Start This state is activated when it is determined that the OA temperature is not cold. It is active for a single execution to turn off preheat prior to releasing the unit to sequenced control.

On In this state, the fans are on and it is OK to control the heating and cooling devices.

Fan Fault The FSM enters this state after proof of airflow fault. The FSM remains in this state until air flow is proven or a higher level FSM takes control of the Supply Fan. Once air flow is proven, the FSM transitions to the RAMP SF state to restart the supply fan.

Stop Fans In this state, the fans are stopped when shutting down.


Start Fans

Ramp SF

Stabilize System

Supply fan type is constant capacity. and Stabilize

delay has expired

Supply fan >= 100%.

Duct static pressure >=

setpoint

Normal Start

Fan Fault

Fan status is proven. Fan status is not proven.

ON

Stop Fans

Fan Start Delay has expired.

Unit not enabled

Fan not required

Duct static pressure is unreliable.

OFF

This FSM can control the fans and the unit is enabled and the fan is required

and duct static pressure is not unreliable.

FSM cannot control the fans.

Fan stop delay has expired.

Cold Start

OAT is less than Low Limit Setpoint

OAT is not less than Low Limit Setpoint

Ramp Heating Delay has expired

Figure 10: Start Stop Sequencer


Energy Recovery Low Limit The HR Low Limit Sequencer Module controls the heat exchanger used to recover energy from the exhaust air and prevent the low limit process variable from dropping below the low limit setpoint. Use this module with either a glycol loop or an energy wheel to prevent the exhaust temperature from dropping below the low limit setpoint. This module accepts inputs for the limit temperature and setpoint and the heat recovery output controller control status. The module has an output for the state and is implemented as a control activity.

Table 11: Energy Recovery Low Limit State Description T Control This state is the temperature control state. The DA-T, RA-T, ZN-T,

or EA-T is controlled to the setpoint in this state. LL-T Control This state is the limit state. The control enters this state to prevent

the low limit temperature from dropping below the low limit temperature set point.

LL-T Wait This is the LL-T Wait state. The sequencer enters this state because low limit temperature rises above the low limit temperature setpoint. If low limit temperature remains above the low limit setpoint for the delay, the unit returns to the T Control state. If the low limit temperature drops below the setpoint again, the unit returns to the LL-T Control state. This state is only used for two-position heat recovery control.

Energy Recovery Low Limit Temperature is Less Than the

setpoint

LL-T Wait

LL-T Control

T Control

Energy Recovery Low Limit Temperature is not Less Than the setpoint and the Energy

recovery device is a two position device

The energy recovery low limit delay has expired

Energy Recovery Low Limit Temperature is not Less Than the setpoint and this FSM can

not control the energy recovery device

Energy Recovery Low Limit Temperature is not Less Than

the setpoint and the Energy recovery PID is saturated high

Energy Recovery Low Limit Temperature is Less Than the

setpoint Figure 11: Energy Recovery Low Limit Sequencer


Control of Staged Devices The 100% OADD application may control up to four staged devices using either equal run time or first on/last off sequencing.

Discharge Air Control of Staged Devices The discharge air control scheme uses the PID saturation status to turn staged devices on or off. The first stage energizes when the PID present value is greater than 0%, and subsequent stages energize each time the PID reaches 100%. Stages turn off each time the PID reaches 0%. See Figure 12.

Figure 12: Discharge Control of Staged Devices

Device Availability Determination The 100% OADD application locks out heating or cooling devices, based on outdoor temperature or a network input.


Output Device Control Energy Recovery The 100% OADD application supports an energy recovery device. The recovery device is a modulated glycol loop, two-position glycol loop, modulated energy recovery wheel, or two-position energy recovery wheel.

Energy Recovery Suitability Energy recovery suitability is determined by comparing exhaust air temperature to outside air temperature. The suitability setpoint is a user-defined differential temperature. Energy recovery is suitable for heating when exhaust air temperature minus outside air temperature is greater than the suitability setpoint (EAT - OAT > suitability setpoint). Energy recovery is suitable for cooling when outside air temperature minus exhaust air temperature is greater than the suitability setpoint (OAT - EAT > suitability setpoint).

In addition, the application supports a local configuration parameter and a network input to enable energy recovery. If any of these suitability methods are not suitable, then energy recovery is considered unsuitable.

Modes of Operation Use Table 12 to determine the modes of operation for the Energy Recovery control function.

Table 12: Modes of Operation – Energy Recovery Mode Description Off In this state, the energy recovery device is turned off. Max In this state, the energy recovery device is operated at its

maximum capacity. Hold In this state, the energy recovery outputs are held at their

current position. Limited Max In this state, the energy recovery outputs operate at their

Limited Max position and are normally used for unoccupied operation.

T Control In this state, the energy recovery device is operated to control the discharge air temperature. This mode is used for heating only since the heat recovery device can provide more heat than what is required to condition the space, but cannot provide enough cooling.

LL-T Control In this state, the energy recovery device is operated to control the low limit temperature.

Table 13 displays the Energy Recovery mode selection.

True

True

True


Table 13: Energy Recovery Mode Selector Table (State Selection) Sequencer States (Modulated Energy Recovery) Device Mode Sequencer Responding Emergency Mode Sequencer

No Airflow Mode Sequencer

Start Stop Sequencer

Energy Recovery Low Limit

DAT Unocc Temp Control

Occ Temp Control

Energy Recovery Suitability

Modulated Energy Recovery Cool Mode

Modulated Energy Recovery Heat Mode

Energy Recovery Low Limit FSM Can Control

DAT Unocc FSM Can Control

Occ Temp Control FSM Can Control

Pre-Shutdown

X X X X X X Off Off

Shutdown X X X X X X Off Off Manual Restart Fault

X X X X X Off Off

Off Stop Fans

X X X X Off Off

False

Heat Off LL-T Control

LL-T X X

None Cool Off Off

False

Shutdown X X Off Off Satisfied X X Off Off

False

Satisfied Satisfied X Off Mech Cool Max Off None Heat Off Off Heating Idle

X Off Off

Heat Off T Control

True

True

Energy Recovery None Cool Off Off False False

Heat Off Max True Preheat None Cool Off Off False False Heat Off Max True Heat None Cool Off Off False False

Normal

Normal Self Restart Fault Start Fans

Ramp SF Cold Start Normal Start On Fan Fault

Normal

Disabled Cool Heat

Shutdown X Off Off

True

True

24


Preheat The 100% OADD AHU application supports the following preheat control options:

• none

• staged preheat with one to four stages

• proportional valve

• face and bypass damper with two-position valve

• face and bypass damper with proportional valve

If you select the face and bypass damper with proportional valve, the application positions the face and bypass damper to 100% face while the switchover temperature is greater than the switchover process variable. When the switchover temperature is less than the switchover setpoint, the application positions the valve to 100% open and positions the face and bypass damper to control the temperature.

The face and bypass damper with proportional valve has three switchover types:

• Outside Air Temperature (OAT) based

• Mixed Air Temperature (MAT) based

• network based

Depending on the option in control, one of the following occurs:

• If the face and bypass damper is in control, the valve is 100% open. This is desired for cold temperatures.

• If the valve is in control, then the face and bypass damper is 100% open and the valve modulates.

The application supports switchover based on outside air temperature or a network input. If the selected switchover process variable is unreliable, then the application positions the proportional valve to100% open and positions the face and bypass damper to control the temperature.


Modes of Operation Use Table 14 to determine the modes of operation for the Preheat module.

Table 14: Modes of Operation - Preheat Mode Description Off All preheat devices are turned off and the modulating preheat

output is commanded to 0%. Max The preheat valve is opened, and the modulating preheat output is

commanded to 100%. Limited Max The modulating preheat output is commanded to the Limited Max

position. This mode is used for unoccupied heating or cooling. Water Flush The modulating preheat output is commanded to the Water Flush

position. Low OA-T Position

When the outside air temperature is less than the Low Outside Air Temperature Setpoint, the modulating preheat output is commanded to the Low Outside Air Temperature position, and the two-position preheat valve is opened.

Instant Shutdown

The staged preheat binary outputs are immediately de-energized without regard for minimum on-times.

Hold The preheat outputs are held at their current position. Temperature Control

The modulating preheat output is commanded to control the temperature to the heating setpoint.

Mixed Air Low Limit 1

The modulating preheat output is commanded to control the low limit temperature to the low limit setpoint.

Table 15 displays the Preheat mode selection.


Table 15: Preheat Mode Selector Table (State Selection) Sequencer States Device Mode as a Function of

Device Setup, and Sequencer States

Responding

Emergency Mode Sequencer



System Mode

Pre Heat Allowed


Occ Temp Control

None Staged Mode DAT Unocc FSM Can Control


PreShutdown X X X X X X Off Instant Shutdown

Shutdown

X X Water Flush X X X Off Instant Shutdown

Water Flush Shutdown

NOT Flush

W rate X X X Off Instant Shutdown

Shutdown

Manual Reset Fault

X X X X X Off Instant Shutdown

Shutdown

Self Reset Fault AND Staged Control


Shutdown

Water Flush X X X Off Instant Shutdown

Waterflush Off

NOT Water Flush

X X X Off Instant Shutdown

Shutdown

Start Fans Ramp SF

X X X X Off Limited Max Limited Max

Cold Start X X X X Off Low OAT Startup

Low OAT Startup

Normal Start

X X X X Off Off Off

Stop Fans X X X X Off Off Off Water Flush X X X Off Off Waterflush Cool Only X X X Off Off Off Fan Only X X X Off Off Off

Normal

Normal Self Reset Fault

On Fan Fault

Purge X X X Off Off Off

False False


True


28

Sequencer States (Cont.) Device Mode as a Function of Device Setup, and Sequencer States

Responding




System Mode

Pre Heat Allowed


Occ Temp Control



False X X Off Off Off Shutdown X Off Off Shutdown True Satisfied X Off Off Shutdown

Satisfied Off Off Off Mech Off Off Off Heating Idle

Off Hold Hold

Energy Recovery

Off Off Off

Preheat Off Main Control Main Control Heat Off Max Max

Normal Normal Self Reset Fault

On Fan Fault

Vent Heat Only Auto

True

Heat Cool Disabled

Shutdown Off Off Shutdown


Heating The 100% OADD AHU application supports the following heat control options:

• none

• staged heating with one to four stages

• proportional valve

Modes of Operation Table 16 displays the modes of operation for the Heat module.

Table 16: Modes of Operation - Heat Mode Description Off All heating devices are turned off, and the modulating heating

output is commanded to 0%. Max The heating valve is opened, and the modulating heating output is

commanded to 100%. Limited Max The modulating heating output is commanded to the Limited Max

Value. This mode is used for unoccupied heating or cooling. Water Flush The modulating heating output is commanded to the Water Flush

position. Low OA-T Position

When the outside air temperature is less than the Low Outside Air Temperature Setpoint, the modulating heating output is commanded to the Low Outside Air Temperature position, and the two-position heating valve is opened.

Instant Shutdown

The staged heating binary outputs are immediately denergized without regard for minimum on-times.

Hold The heating outputs are held at their current position. Temperature Control

The modulating heating output is commanded to control the temperature to the heating setpoint.

Table 17 displays the Heat mode selection.


Table 17: Heat Mode Selector Table (State Selection) Sequencer States Device Mode as a Function of


Responding




System Mode

Sec Heat Allowed


Hot Deck Sequencer



Pre-Shutdown X X X X X X Off Instant Shutdown

Shutdown

Waterflush X X X Off Instant Shutdown

Waterflush Shutdown X X

NOT Water Flush


Shutdown

Manual Restart Fault


Shutdown

Self Restart Fault and Staged Control


Shutdown


Waterflush Off

NOT Water Flush


Off

Start Fans Ramp SF

X X X X Off Off Off

Cold Start X X X X Off Off Off Normal Start X X X X Off Off Off Stop Fans X X X Off Off Off

Waterflush X X X Off Off Waterflush Cool Only X X X Off Off Off Fan Only X X X Off Off Off Purge X X X Off Off Off

Normal

Normal Self Restart Fault

On Fan Fault

Vent Heat Only Auto

False X X Off Off Off

False False




Responding




System Mode

Sec Heat Allowed


Hot Deck Sequencer



Shutdown X Off Off Shutdown Satisfied X Off Off Shutdown

False

Satisfied Off Off Off Idle Off Off Off Control Off Main

Control Main Control

Normal Normal Self Restart Fault

On Fan Fault

Vent Heat Only Auto

True

Disabled Heat Cool


True

True


32

Cooling The 100% OADD AHU application supports the following cooling control options:

• none

• staged cooling with one to four stages

• proportional Valve

• face and bypass damper with two-position valve

Modes of Operation Use Table 18 to understand the modes of operation for the Cooling function.

Table 18: Modes of Operation - Cooling Mode Description Off All cooling devices are turned off, and the modulating cooling

output is commanded to 0%. Max The cooling valve is opened, and the modulating cooling output

is commanded to 100%. Limited Max The modulating cooling output is commanded to the Limited

Max Value. This mode is used for unoccupied heating or cooling.

Water Flush The modulating cooling output is commanded to the Water Flush position.

Low OA-T Position When the outside air temperature is less than the Low Outside Air Temperature Setpoint, the modulating cooling output is commanded to the Low Outside Air Temperature position, and the two-position cooling valve is opened.

Instant Shutdown The staged cooling binary outputs are immediately de-energized without regard for minimum on-times.

Hold The cooling outputs are held at their current position. Temperature Control

The modulating cooling output is commanded to control the temperature to the cooling setpoint.

Dehumidification 1 The modulating cooling output is commanded to control the humidity to the humidity setpoint.

Mode Selection Table 19 displays the Cooling mode selection.


Table 19: Mech Cooling Mode Selector (State Selection) Sequencer States Device Mode as a Function of


Responding




System Mode

Mech Clg Allowed


Occ Temp Control

None Staged Modulated DAT Unocc FSM Can Control


Pre-Shutdown

X X X X X X Off Instant Shutdown

Shutdown

X X Waterflush X X X Off Instant Shutdown

Waterflush Shutdown

X X NOT Water Flush


Shutdown



Shutdown

Self Restart Fault and Staged Control


Shutdown


Waterflush Off

NOT Water Flush


Shutdown

Start Fans Ramp SF

X X X X Off Off Off

Cold Start X X X X Off Off Off Normal Start X X X X Off Off Off Stop Fans X X X X Off Off Off

Waterflush X X X Off Off Waterflush Heat Only X X X Off Off Off Fan Only X X X Off Off Off

Normal

Normal Self Restart Fault

On Fan Fault

Purge X X X Off Off Off

False False



34


Responding




System Mode

Mech Clg Allowed


Occ Temp Control

None Staged Modulated DAT Unocc FSM Can Control


False X X Off Off Off False Shutdown X Off Off Shutdown Satisfied X Off Off Shutdown Heat X Off Off Off

False

Satisfied Off Off Off Heating Idle

Off Off Off

Mech Off Main Control

Main Control

Energy Recovery

Off Off Off

Preheat Off Off Off Heat Off Off Off

Normal Normal Self Restart Fault

On Fan Fault

Vent Cool Only Auto

True

Disabled Cool


True

True


Supply Fan The 100% OADD application supports two types of supply fan options: constant capacity supply fan and variable capacity supply fan. The variable capacity option is for duct static pressure control.

Modes of Operation Table 20 the modes of operation for the Supply Fan function.

Table 20: Modes of Operation – Supply Fan Mode Description Off The supply fan is turned off. Min The modulating supply fan output is commanded to 0% and the

supply fan staged output is turned on. Ramp The supply fan staged output turns on and the modulating

supply fan output is commanded from 0 to 100% at the speed specified by the Ramp Rate configuration parameter. If the duct static pressure is unreliable, then the module operates in the Off mode.

S-P Control The supply fan outputs are commanded to control the duct static pressure. If the duct static pressure is unreliable, then the module operates in the Off mode.

Mode Selection Use Table 21 to understand the Supply Fan mode selection.


Table 21: Supply Fan Mode Selector (State Selection) Supply Fan Mode Prioritization Sequencer States Supply Fan Mode Emergency Mode

No Airflow Start Stop Constant Capacity Fan

Variable Capacity Fan

Start Stop Sequencer Can Control Supply Fan

Pre-shutdown X X Off Off Shutdown X X Off Off


X Off Off

False

Off Off Off Start Fans Min Min Ramp SF Min Ramp Cold Start Min SP-Control Normal Start Min SP-Control On Min SP-Control Stop Fans Off Off

Normal

NOT (Manual Restart Fault)

Fan Fault Min Min

True


Exhaust Fan The 100% OADD application supports several exhaust fan options including:

• no exhaust fan

• constant capacity exhaust fan

• building static pressure control

• supply fan tracking

Modes of Operation Table 22 displays the modes of operation for the Exhaust Fan function. Figure 13 displays the Exhaust Fan Track schedule.

Table 22: Modes of Operation – Exhaust Fan Mode Description Off The exhaust fan is turned off. Max The modulating exhaust fan output is commanded to 100% and the

exhaust fan staged output is turned on. Min The exhaust return fan output is commanded to 0% and the exhaust

fan staged output is turned on. Hold The exhaust fan outputs are held at their current position. BS-P Control The exhaust fan outputs are commanded to control the building static

pressure. If the building static pressure is unreliable, then the module operates in the Track mode.

Track The modulating exhaust fan output is commanded to track the modulating supply fan output.


Figure 13: Exhaust Fan Track Reset Schedule

Mode Selection Table 23 displays the Exhaust Fan mode selection.

Table 23: Exhaust Fan Mode Selector (State Selection) Sequencer States Exhaust Fan Mode Emergency Mode

No Airflow Start Stop Constant Capacity Fan

Track Variable Capacity Fan

Pre-shutdown X X Off Off Off Shutdown X X Off Off Off


X Off Off Off

Off Off Off Off Start Fans Off Off Off Ramp SF Min Min Min Cold Start Min Min Min Normal Start Min Track BSP-Control On Min Track BSP-Control Stop Fans Off Off Off

Normal

NOT(Manual Restart Fault)

Fan Fault Min Track BSP-Control


Humidification The 100% OADD Application supports modulating humidification or a single stage of humidification.

Modes of Operation Table 24 displays the modes of operation for the Humidification function.

Table 24: Modes of Operation – Humidification Mode Description Off The modulating humidifier output is commanded to 0% and the

staged humidifier output is turned off. H-Control The humidifier outputs are commanded to control the

humidification setpoint.

Mode Selection Table 25 displays the Humidification mode selection.

Table 25: Humidification Mode Selector (State Selection) Humidity is Available

Start Stop

System Mode


Hot Deck Sequencer

Hum Unreliable

Hum During Unocc

Hum Mode

False X X X X X X Off Not (On)

X X X X X Off

Fan Only or Cool Only or Water Flush or Purge

X X X X Off

Satisfied Cool Shutdown

X X X Off

Unreliable True Off Unreliable False Off Reliable True H Control

Heat Control

Reliable False Off Unreliable X Off Control Reliable X H Control

True

On

Auto or Vent or Heat Only

Disabled

Satisfied Idle Shutdown

X X Off


PID Tuning If tuning is required, you must manually tune the PIDs in this application.

Use Table 26 as a conservative starting point if you manually tune the PIDs. Further manual turning may be required. For more information, see Figure 14.

Table 26: PID Tuning Parameters Control Type Proportional

Band Integration Time (seconds)

Saturation Time (seconds)

Discharge Air Temperature Control

21.1°C (38.0°F) 202 388

Humidification Control

56% RH 1873 1435

Duct Static Pressure Control

2.0 in. W.C. 30 281

Bldg Static Pressure Control

0.5 in. W.C. 91 319

Integration Time The time required by the integral action to contribute the same amount to the controller output as the proportional term for a constant error.

Proportional Band The amount of change in the Process Variable that produces a full range change [High Limit - Low Limit] in the Present Value. It must be greater than zero.

Saturation Time The amount of time the Present Value must be at the Low or High Limit for the saturation status to be set to either Low or High.


Figure 14: PID Tuning – Temperature vs. Time


FX Builder Application Wizard Concepts FX Builder is a software tool that allows you to create and export application software for FX Field Controllers. FX Builder includes an Application Wizard which allows you to easily create application software from predefined templates. These application templates are factory designed and tested and include several configuration options for you to choose from.

The OADD AHU application template includes predefined features and functionality that you can select, enable/disable, and adjust with the Application Wizard. Examples of configuration options include:

• heating and cooling configuration

• choice of room sensor type

• configurable control strategies

• adjustable setpoints, parameters, and tuning parameters

• selectable user interface and supervisory interface

• configurable input/output types and channel assignments

The following sections provide detailed procedures on how to use FX Builder’s Application Wizard to install and select the OADD AHU application template and to configure and export a unique OADD AHU application file.

Installing the OADD AHU Application Package To install the OADD AHU Application Package:

1. Obtain the OADD AHU Application Package and save it to your local hard drive.

2. Launch FX Builder.

3. Click Settings > Application Wizard Preferences (Figure 15).


Figure 15: Settings > Application Wizard Preferences Menu

The Application Wizard Preferences dialog box appears (Figure 16).

Figure 16: Application Wizard Preferences Dialog Box without Packages

Installed

4. Under File Preferences, select the documents you want to generate. Documentation types which you can select include:

• Hardware I/O Documentation

• Protocol Documentation

• Network Protocol Files (N2 Print Files, LON Resource files)


Note: The default is to generate all three types of documentation. We highly recommend you keep the preferences at these defaults, so that all documentation types are generated.

5. If desired, change the File Location to where the generated files are exported.

6. Click Install… and navigate to the location of the OADD AHU Application Package as performed in Step 1.

7. Select the AHU-OADD.dbe Application Package and click Open.

The Application Package is installed in the Application Wizard Preferences dialog box (Figure 17).

Figure 17: Application Wizard Preferences Dialog Box with OADD AHU

Package Installed

8. Click OK.


Selecting the OADD AHU Application Template To select the OADD AHU Application Template:

1. Open FX Builder.

2. Click File > Application Wizard (Figure 18). The Select an Application Template window appears.

Figure 18: File > Application Wizard Menu


3. On the left side of the window, open the Air Handlers folder and select the 100% Outside Air Dual Duct Air Handling Unit Template (Figure 19).

Figure 19: Selecting the OADD AHU Application Template

4. Click Next. A status bar appears while the selected application template and plug-ins are loaded into FX Builder (Figure 20).

Figure 20: Loading Application Status Bar

The Configure plug-in appears when the application is loaded (Figure 21).


Configuring the OADD AHU Application The Configure dialog contains tabbed views of the control strategy configuration options, setpoints, and parameters that you can select and adjust in the OADD AHU application.

Configuring the Control Strategy To configure the control strategy:

1. Click the Configuration tab. The OADD AHU application’s control strategy configuration options and default values appear (Figure 21).

Figure 21: OADD AHU Configuration Plug-in

2. Modify the configuration settings as needed. Use Table 27 as a reference.


Table 27: OADD AHU Configuration Options

Configuration Setting

Description Options/Adjustment Range

Control Strategy Selection Control Strategy Select the temperature

control strategy Constant Discharge Air Temperature Control Discharge Air Temperature Reset by Outside Air Temperature

Energy Recovery Recovery Type Select the energy recovery

type Glycol loop proportional Glycol loop 2-position Energy wheel proportional Energy wheel 2-position

Preheat Preheat Type Select the type of preheating None

One Stage Two Stages Three Stages Four Stages Face and bypass damper, with 2-position valve Face and bypass damper with proportional valve Proportional valve

Staged Control Select the type of staged preheat control

First On/Last Off Equal Runtime

Shutdown Action Select the position of the preheat valve when in shutdown

Closed Low OAT Position

Switchover FB Setup

Select the face and bypass damper switchover input

None Outside air temperature Network

Cooling Cooling Type Select the type of cooling None

One Stage Two Stages Three Stages Four Stages Face & bypass damper, with 2-position valve Proportional valve

Staged Control Select the type of staged cooling control


Shutdown Action Select the position of the cooling valve when in shutdown






Heating Heating Type Select the type of heating None

One Stage Two Stages Three Stages Four Stages Face & bypass damper, with 2-position valve Proportional valve

Staged Control Select the type of staged heating control


Shutdown Action Select the position of the heating valve when in shutdown


Fan(s)/Static Pressure Control Supply Fan Type Select the type of supply fan Constant volume

Variable volume Exhaust Fan Type Select the type of exhaust fan None

Constant volume Supply fan tracking Building static pressure control

UnOcc Control Do you want to enable unoccupied control?

No (disabled) Yes (enabled)

Humidity Control Humidification Enable/disable humidification

control Disable Enable

UnOc Humidity Ctrl Enable/disable unoccupied humidity control

Disable Enable

Alarm Selection High Pressure Do you have a switch for high

pressure indication? No Yes

Low Temperature Do you have a switch for low temperature indication?

No Yes

SF Proof Do you have a switch for proof of supply flow?

No Yes

Smoke Do you have a smoke detector?

No Yes

Miscellaneous Loss of Airflow Select the type of reset

required after shutdown occurs due to loss of airflow

Automatic Reset Manual Reset

Power Fail Restart Enable/disable the Power Fail Restart feature

No Yes





Coil Pump DIs PH Coil Pump Do you have a switch to

indicate preheating coil pump status?

No Yes

Htg Coil Pump Do you have a switch to indicate heating coil pump status?

No Yes

Clg Coil Pump Do you have a switch to indicate cooling coil pump status?

No Yes

Adjusting Setpoints The Setpoints tab contains the setpoints that you can adjust in the OADD AHU application.

To adjust setpoints:

1. Click the Setpoints tab. The OADD AHU application’s setpoints and their default values appear (Figure 22).

Figure 22: Setpoints Plug-in

2. Adjust the setpoints as needed. Use Table 28 as a reference. Table 28: OADD AHU Setpoints

Setpoint Type Description Adjustment Range Hot Deck Setpoints Hot Deck Setpt Enter the hot deck setpoint 75 to 140°F (7.2 to 60°C) Cold Deck Setpoints Cold Deck Setpt Enter the cold deck setpoint 75 to 140°F (7.2 to 60°C) UnOccupied Zone Temperatures UnOcc Clg Setpt Enter the unoccupied cooling

setpoint 74.8 to 100°F (23.8 to 37.8°C)



Setpoint Type (Cont.) Description Adjustment Range UnOcc Htg Setpt Enter the unoccupied heating

setpoint 40 to 64.9°F (4.4 to 18.3°C)

Energy Recovery ER Setpt Enter the energy recovery

setpoint 5 to 25°F (2.8 to 13.8°C)

ERLL Setpt Enter the energy recovery lower limit setpoint

33.6 to 45°F (0.9 to 7.2°C)

Preheat Pht Low Limit Enter the preheat low limit 40 to 50°F (4.4 to 10°C) FBPD Switch Setpt Enter the face & bypass

damper switchover setpoint 35 to 55°F (1.7 to 12.8°C)

Lockouts Pht Lockout Enter the outside air

temperature lockout for preheating

0 to 100°F (-17.8 to 37.8°C)

Clg Lockout Enter the outside air temperature lockout for cooling

0 to 100°F (-17.8 to 37.8°C)

Htg Lockout Enter the outside air temperature lockout for heating

0 to 100°F (-17.8 to 37.8°C)

Static Pressure Duct Static Pressure Enter the duct static pressure

setpoint 0 to 5 in. w.c.

Bldg Static Pressure Enter the building static pressure setpoint

0 to 0.1 in. w.c.

Humidity Control Humidification Setpt Enter the humidification setpoint 0 to 100% RH


Adjusting Parameters The Parameters tab contains the system parameters that you can adjust in the OADD AHU application. To adjust parameters:

1. Click Parameters. The OADD AHU system parameters and their default values appear (Figure 23).

Figure 23: Parameters Tab

2. Adjust the system parameters as needed. Use Table 29 as a reference. Table 29: OADD AHU System Parameters

Parameter Type Description Adjustment Range System Power Fail Restart Enter the maximum power fail

restart time. 0 to 180 seconds

Shutdown Delay Enter the shutdown delay 0 to 120 seconds AirFlow Start Delay Enter the maximum amount of

time allowed for the fan to prove after it has been commanded

0 to 120 seconds

AirFlow Debounce Enter the amount of time a temporary loss of airflow is ignored before action is taken

0 to 60 seconds

Stabilize Delay Enter the amount of time allowed to circulate air and stabilize temperatures before opening the dampers.

0 to 120 seconds



Parameter Type (Cont.)

Description Adjustment Range

UnOcc Timer Enter the amount of time the sequencer remains in the unoccupied cooling or heating mode after the temperature setpoint has been satisfied.

0 to 300 seconds

Low OAT Setpt Enter the low outside air temperature setpoint

0 to 100°F (-17.8 to 37.8°C)

Hot Deck Reset Low OAT (X1) Low outside air temperature for hot

deck reset (X1). 0 to 100°F (-17.8 to 37.8°C)

High OAT (X2) High outside air temperature for hot deck reset (X2).

0 to 100°F (-17.8 to 37.8°C)

High DAT (Y1) High discharge air temperature for hot deck reset (Y1).

45 to 140°F (7.2 to 60°C)

Low DAT (Y2) Low discharge air temperature for hot deck reset (Y2).

45 to 140°F (7.2 to 60°C)

Cold Deck Reset Low OAT (X1) Low outside air temperature for cold

deck reset (X1). 0 to 100°F (-17.8 to 37.8°C)

High OAT (X2) High outside air temperature for cold deck reset (X2).

0 to 100°F (-17.8 to 37.8°C)

High DAT (Y1) High discharge air temperature for cold deck reset (Y1).

45 to 140°F (7.2 to 60°C)

Low DAT (Y2) Low discharge air temperature for cold deck reset (Y2).

45 to 140°F (7.2 to 60°C)

Energy Recovery ER Low Limit Delay

Enter the energy recovery low limit delay

0 to 300 seconds

ER LimMaxSpd Enter the energy recovery limited maximum speed

0 to 300 seconds

ER Max Speed Enter the energy recovery maximum speed

0 to 300 seconds

PreHeat Pht Lim Max Pos Enter the preheating limited max

position 0 to 100% open

Pht Flush Pos Enter the preheating flush position 0 to 100% open Pht Low OAT Pos

Enter the preheating low OAT position 0 to 100% open

Pht Interstage Enter the preheating interstage delay time

0 to 900 seconds

Cooling Clg Lim Max Pos Enter the cooling limited max position 0 to 100 % Clg Flush Pos Enter the cooling flush position 0 to 100% open Clg Low OAT Pos

Enter the cooling low OAT position 0 to 100% open





Clg Interstage Enter the cooling interstage delay time 0 to 900 seconds Heating Htg Limit Max Pos

Enter the heating limited max position 0 to 100 %

Htg Flush Pos Enter the heating flush position 0 to 100% open Htg Low OAT Pos

Enter the heating low OAT position 0 to 100% open

Htg Interstage Enter the heating interstage delay time 0 to 900 seconds Fan Control SF Ramp Rate Enter the rate of change in fan speed

when ramping the fan speed up 0 to 164%/minute

SF High Speed Enter the supply fan high speed calibration point (used when in Fan Track mode to scale the supply fan command so the return fan moves the desired amount of air).

0 to 100%

SF Low Speed Enter the supply fan low speed calibration point (used when in Fan Track mode to scale the supply fan command so the return fan moves the desired amount of air).

0 to 100%

EF High Speed Enter the desired exhaust fan speed when supply fan is at its high calibration point

0 to 100%

EF Low Speed Enter the desired exhaust fan speed when supply fan is at its low calibration point

0 to 100%

Fan Off Delay Enter the time between stopping the fans 0 to 120 seconds Fan On Delay Enter the time between starting the fans 0 to 120 seconds


Adjusting Proportional Plus Integral plus Derivative (PID) Parameters The PID Parameters tab contains the tuning parameters (proportional bands, integration times, and saturation times) that you can adjust in the OADD AHU application.

To adjust PID parameters:

1. Click PID Parameters. The OADD AHU application’s PID Parameters and default values appear (Figure 24).

Figure 24: PID Parameters Tab

2. Modify the PID Parameters as needed. Use Table 30 as a reference. Table 30: OADD AHU PID Parameters

Parameter Type Description Adjustment Range Energy Recovery ER PB Enter the energy recovery

proportional band 0 to 100°F (0 to 55.6°C)

ER Iterm Enter the energy recovery integration time

0 to 6,553 seconds

ER Sat Time Enter the energy recovery saturation time

0 to 6,553 seconds

ERLL PB Enter the energy recovery low limit proportional band

0 to 100°F (0 to 55.6°C)

ERLL Iterm Enter the energy recovery low limit integration time

0 to 6,553 seconds

ERLL Sat Time Enter the energy recovery low limit saturation time

0 to 6,553 seconds

Preheat Pht PB Enter the preheating

proportional band 0 to 100°F (0 to 55.6°C)

Pht Iterm Enter the preheating integration time

0 to 6,553 seconds





Pht Sat Time Enter the preheating saturation time

0 to 6,553 seconds

PhtLL PB Enter the preheating low limit proportional band

0 to 100°F (0 to 55.6°C)

PhtLL Iterm Enter the preheating low limit integration time

0 to 6,553 seconds

PhtLL Sat Time Enter the preheating low limit saturation time

0 to 6,553 seconds

Cooling Clg PB Enter the cooling proportional

band 0 to 100°F (0 to 55.6°C)

Clg Iterm Enter the cooling integration time

0 to 6,553 seconds

Clg Sat Time Enter the cooling saturation time

0 to 6,553 seconds

Heating Htg PB Enter the heating proportional

band 0 to 100°F (0 to 55.6°C)

Htg ITerm Enter the heating integration time

0 to 6,553 seconds

Htg Sat Time Enter the heating saturation time

0 to 6,553 seconds

Static Pressure Duct Static PB Enter the duct static pressure

control proportional band 0.01 to 50 in. w.c.

Duct Static Iterm Enter the duct static pressure control integration time

0 to 6,553 seconds

Building Static PB Enter the building static pressure control proportional band

0 to 6,553 seconds

Building Static Iterm Enter the building static pressure control integration time

0 to 6,553 seconds

Humidity Control Hum PB Enter the dehumidification

control proportional band 0 to 100% RH

Hum Iterm Enter the dehumidification control integration time

0 to 6,553 seconds


Configuring the Internal Occupancy Schedule The Schedule and Calendar tabs provide you the ability to configure the internal occupancy schedule.

Note: Using the internal occupancy schedule is optional. An external, network schedule and calendar may be used as an alternative.

To configure the internal occupancy schedule:

1. Click on Schedule tab. See Figure 25.

2. Configure the Weekly Schedule. Select the checkboxes for the days of the week and holidays to be scheduled. Click and drag to select the desired occupied (on) period for a day of the week. Right click in the selected time period and selected Status > Occupied. Repeat for the other occupied time periods and other desired days of the week. When finished, click Apply.

Figure 25: Weekly Schedule

3. Click on the Calendar tab (Figure 26). Configure the Holiday Calendar. Click on the desired dates and right-click to assign the status (holiday or alternate).

4. When finished, click on Apply to set the Calendar.


Figure 26: Calendar

Viewing the Configuration Summary The Config Summary tab provides a summary for all configuration settings and setpoint and parameter adjustments made during the configuration session.

To view the configuration summary:

1. Click Config Summary. The Configuration Summary report appears (Figure 27).

2. View the summary here or, to save the summary to a document, right-click on the summary information and select Copy to clipboard, and then paste it into a document.

Figure 27: Configuration Summary Window


Viewing Required Inputs and Outputs The FX Hardware tab provides a list of the required inputs and outputs based on the selected configuration options.

To view the required inputs and outputs:

1. Click FX Hardware. The Required Inputs and Outputs summary report appears (Figure 28).

2. View the summary here or, to save the summary to a document, right-click on the summary information and select Copy to clipboard, and then paste it into a document.

Figure 28: FX Hardware Window

3. Click Next to select the interface(s) and device I/Os.


Selecting the User Interface(s) and Supervisor Interface The Choose Interfaces (Figure 29) dialog box provides User Interface and Supervisor Interface options. If you want to return to the Configuration session to select different configuration options or to change setpoints and parameters, click Previous.

To select the user interface(s) and supervisor interface:

1. Choose the desired User Interface(s).

2. Choose the desired Network Protocol.

Figure 29: Choose Interfaces Dialog Box

3. Click Next to select the FX controller. The Select Target Device dialog box appears (Figure 30).


Selecting the Target Device The Select Target Devices dialog box provides options for the target controller based on the configuration settings you selected.

To select the target device:

1. Select a device.

2. Click Next.

Figure 30: Select Target Device Dialog Box - Approved Devices Tab

The Configure Hardware I/O window appears (Figure 32).

Note: If the device you want to use does not appear in the list of approved devices, click the Rejected Devices tab and view the Reason for the rejection (Figure 31). You can also click the Exclusion Details button for more details.

Then, based on the rejection reasons, you can click Previous to return to the configuration plug-ins and edit the appropriate configuration(s) to configure the device so it is approved.

Figure 31: Rejected Devices Tab


Configuring the Hardware I/Os The Configure Hardware I/O window is organized into tabs based on I/O type (Analog Inputs, Analog Outputs, and Digital Outputs).

To configure the hardware I/Os:

1. Click on the Analog Inputs tab. Change the Sensor Type and Channel Number for the desired objects (Figure 32).

Figure 32: Configure Hardware I/O Window—Analog Inputs Tab

2. Click on the Analog Outputs tab. Change the Actuator Type and Channel Number for the desired object (Figure 33).

Figure 33: Configure Hardware I/O Window—Analog Outputs Tab

3. Click on the Digital Inputs tab. Change the Channel Number for the desired object (Figure 34).


Figure 34: Configure Hardware I/O Window—Digital Inputs Tab

4. Click on the Digital Outputs tab. Change the Channel Number for the desired object (Figure 35).

Figure 35: Configure Hardware I/O Window—Digital Outputs Tab

Note: Each Channel Number must be unique. The Status column alerts you with a yellow alert symbol if multiple channels are assigned the same number. Correct the Channel Number so each channel has a unique number and all Status symbols are green (Figure 36).

Figure 36: Channel Number Status Alert

5. Click Next. The Generate Application dialog box appears (Figure 37).


Generating the Application Files and Documentation This is the final step in creating and generating the Application files and documentation (Figure 37).

To generate the application files and documentation:

1. Edit or enter a Name for the Application.

2. Enter the name of the Application designer in the Prepared By field (or department name, employee ID, other relevant information to the preparer), if desired.

3. Enter information relevant to the Application, design, notes for others who may use the Application in the future, or other information in the Description field, if desired.

4. Navigate to the directory folder where you want the application files to be exported (if different than the Application File default location shown).

5. If desired, change the name of the .apd file in the Application File field, but do not change the .apd extension.

Figure 37: Generate Application Window

6. Click Finish.

The application files and documentation are generated, and the Application Wizard closes. The bottom of the FX Builder window displays a status for each application object that is loaded. When all application objects are loaded, the Generating Documentation status bar displays in the middle of the screen (Figure 38).

Figure 38: Generating Documentation Status Bar


7. Click OK when the Application Compile completed! dialog box appears (Figure 39).

Figure 39: Application Compile completed! dialog box

The Application and its corresponding files and documentation are now generated. The types of files generated depend on the selections made in the Application Wizard Preferences dialog box (Figure 16) and Configuration Options plug-ins.

Viewing Generated Application and Documentation Files To view generated application and documentation files, go to the destination folder designated in the Application File field.

Reviewing an Exported Application File The Application Wizard includes a synchronization feature that allows you to match an exported application file (*.apd) to its template. This feature allows you to use the Application Wizard screens to review and/or change any of the options, settings, or selections made to an exported application file.

To use this feature:

1. Open the Application Wizard.

2. Click Synchronize Application Template (Figure 40). The Open Application dialog box appears.

Figure 40: Synchronize Application Template


3. Navigate to the location of your exported *.apd file, select it and click Open. The Application Wizard re-appears showing if the selected application matches an installed template (Figure 41).

Figure 41: Application Template Match

4. Click Next. The Application Wizard appears, showing the actual configuration settings, setpoints, adjustment parameters, user interface selection, protocol choice, target controller selection, and I/O configurations that were originally made before the application file was exported. You can now use the Application Wizard to view and/or change these settings as desired.


FX CommPro Concepts FX CommPro is a software tool you use to perform the following functions:

• download the application file to the target controller(s)

• monitor data points

• issue overrides

• adjust unit setpoints and parameters

For detailed information on downloading and commissioning with FX CommPro, refer to the FX CommPro N2 User’s Guide (LIT-12011152) or FX CommPro BACnet User’s Guide (LIT-12011240).

User Interface Concepts The OADD AHU application template supports a choice of two User Interfaces: the Medium User Interface (MUI) and the LCD2x4 User Interface.

Medium User Interface The MUI (Version 3) is an optional hardware accessory that consists of the following:

• 4-line by 26-character Liquid Crystal Display (LCD)

• 6 keys: up, down, left, right, Enter, and Escape

• 10 discrete status Light-Emitting Diodes (LEDs)

Figure 42: Medium User Interface (MUI)

The MUI connects to the Remote Display bus of the FX Field Controller. You can mount the MUI locally or remotely, or you can use the MUI as a hand-held tool.


Medium User Interface Capabilities The OADD AHU application template includes a predefined MUI configuration. The MUI configuration organizes information into folders and pages which you navigate using the keypad and display.

You use the MUI to perform the following functions:

• monitor control points and system status

• adjust setpoints and unit parameters

• initiate overrides

• select the desired display units of measures

Medium User Interface Navigation Upon power up, the MUI displays the Home Page showing system information (see Table 31). Table 31: MUI Home Page

Display Name Description Units/Enumeration CD Temp Cold deck temperature °F/°C HD Temp Hot deck temperature °F/°C CD Press Cold deck pressure in. w.c. HD Press Hot deck pressure in. w.c. ZN Temp Zone temperature °F/°C OA Temp Outside air temperature °F/°C Mode Mode of operation Auto = auto

Heat = heating Morning_warmup = morning warmup Cool = cooling Night_purge = night purge Pre-cool = precool Off = off Test = test Emergency_heat = emergency heating Fan_only = fan only Free_cool = free cooling Max_heat = max heating Economy = economy Dehumid = dehumidification Calibrate = calibrate Emerg_cool = emergency cooling Emerg_steam = emergency steam Invalid = invalid

Pri Htg Out Primary heating output % Continued on next page . . .


Display Name (Cont.)

Description Units/Enumeration

Sec Htg Out Secondary heating output % Clg Out Cooling output % Fan Out Supply fan output % Act CD Setpt Active occupied cooling

setpoint °F/°C

Act HD Setpt Active occupied heating setpoint

°F/°C

In addition to the Home Page, the MUI also includes 11 folders of information which you access from the MUI’s Main Menu.

Table 32: OADD AHU MUI Folders Folder User Access

Level Contents

Status All Input and output status Config Admin OADD AHU application configuration

settings Setpoints Admin Setpoints Parameters Admin Miscellaneous setpoints and parameters PID Parameters Admin Proportional bands, integration times, and

saturation times Modes All Sequencer modes and states Balancer Admin Override points Time All Time Schedulers Admin Schedulers Password All User management


Status Folder The Status folder is available to all users and contains four pages showing the current values/states of the inputs and outputs (see Table 33 through Table 37). Table 33: MUI Status Folder Analog Inputs Page Contents

Display Name Description Units/Enumeration CD Temp Cold deck temperature °F/°C HD Temp Hot deck temperature °F/°C CD Press Cold deck pressure in. w.c. HD Press Hot deck pressure in. w.c. ZN Temp Zone temperature °F/°C OA Temp Outside air temperature °F/°C EA Temp Exhaust air temperature °F/°C ZN/EA RH Zone/exhaust air humidity % RH Bldg Static Building static pressure in. w.c. ER LL Temp Energy recovery low limit

temperature °F/°C

Table 34: MUI Status Folder Digital Inputs Page Contents

Display Name Description Units/Enumeration SF Status Supply fan status Off = off

On = on EF Status Exhaust fan status Off = off

On = on UnitEnaStatus Unit enable status Off = off

On = on Smoke Alarm Smoke alarm input status Norm = normal

Alarm = in alarm HighStaticAlm High static alarm input status Norm = normal

Alarm = in alarm ManFaultReset Manual fault reset status Norm = normal

Alarm = in alarm PhtPumpStatus Preheat pump status Off = off

On = on HtgPumpStatus Heating pump status Off = off

On = on ClgPumpStatus Cooling pump status Off = off

On = on ER Status Energy recovery status Off = off

On = on


Table 35 : MUI Status Folder Analog Outputs Page Contents

Display Name Description Units/Enumeration SF Output Supply fan output % open EF Output Exhaust fan output % open Clg Vlv Out Cooling valve output % open Htg Vlv Out Heating valve output % open Pht 1 Out Preheating 1 output % open Pht 2 Out Preheating 2 output % open Humid Output Humidity output % open ER Output Energy recovery output % open

Table 36: MUI Status Folder Digital Outputs Page Contents

Display Name Description Units/Enumeration SF Cmd Supply fan command Off = off

On = on EF Cmd Exhaust fan command Off = off

On = on Clg 1 Cmd Cooling stage 1 command Off = off




On = on Htg 1 Cmd Heating stage 1 command Off = off




On = on Pht 1 Cmd Preheat stage 1 command Off = off




On = on


Table 37: MUI Status Folder Digital Outputs Cont. Page Contents

Display Name Description Units/Enumeration Humid Cmd Humidifier command Off = off

On = on ER Cmd Energy recovery command Off = off

On = on

Modes Folder The Modes folder is available to all users and contains one page showing the current states of the sequencer modes (Table 38). Table 38: MUI Modes Page Contents

Display Name Description Units/Enumeration Occ Mode Occupied mode Occ = occupied

Unocc = unoccupied Bypass = bypass Standby = standby Invalid = invalid

Unc DAT Mode Unoccupied discharge air temperature control mode

Sat = satisfied Cool = cool Heat = heat SD = shutdown Dis = disabled

Safety Mode Safety mode Norm = normal Press = press DePress = depress Purge = purge SD = shutdown PreSD = Preshutdown

No Air Mode No airflow mode Norm = normal SelfRF = fault, self-reset ManRF = fault, manual reset

Strt/Stp Start/stop mode Off = off SF StartF = supply fan start first RF StartF = return fan start first Ramp SF = ramp supply fan Stab sys = stabilize system Ramp OA = ramp dampers On = on CloseDpr = close dampers RF StpF = return fan stop first SF StpF = supply fan stop first Fans Off = fans off FanFault = fan fault



Display Name (Cont.) Description Units/Enumeration Unit Enable Md Unit enable mode Dis = disabled

Ena = enabled ER Suit Mode Energy recovery

suitability mode None = none Cool = cool Heat = heat

Pht State Preheating state Off = off Max = max Lim max = limited max Wtr flush = water flush Lo OATPos = low OAT position Instant SD = instant shutdown Hold = hold Main Ctrl = main ctrl AuxCtrl1 = aux ctrl1 AuxCtrl2 = aux ctrl2 LOATStrtup = low OAT startup

Htg State Heating state Off = off Max = max Lim max = limited max Wtr flush = water flush Lo OATPos = low OAT position Instant SD = instant shutdown Hold = hold Main Ctrl = main ctrl AuxCtrl1 = aux ctrl1 AuxCtrl2 = aux ctrl2 LOATStrtup = low OAT startup

Clg State Cooling state Off = off Max = max Lim max = limited max Wtr flush = water flush Lo OATPos = low OAT position Instant SD = instant shutdown Hold = hold Main Ctrl = main ctrl AuxCtrl1 = aux ctrl1 AuxCtrl2 = aux ctrl2 LOATStrtup = low OAT startup



Display Name (Cont.) Description Units/Enumeration SF State Supply fan state Off = off

Min = min Ramp = ramp SP Ctrl = SP ctrl

EF State Exhaust fan state Off = off Max = max Min = min Hold = hold BSP = BSP control Track = track

HD State Hot deck state Sat =satisfied Idle = idle Ctrl = control SD = shutdown


Configuration Folder The Configuration folder is only available to Admin users and contains three pages showing the configuration settings made during the Application Wizard session. These settings are read-only (you cannot change the OADD AHU configuration from the MUI). See Table 39, Table 40, and Table 43.

Table 39: MUI Configuration Page 1 Contents Display Name Description Units/Enumeration Temp Ctrl Temperature control strategy Cnst DAT = constant

discharge air temperature control DAT/OAT = discharge air reset by outside air temperature

ER Type Energy Recovery Type None = none GlycolProp = Glycol proportional Glycol2Pos = Glycol two position EWProp = energy wheel proportional EW2Pos = energy wheel two position

Pht Type Type of preheating None = none One Stg = one stage Two Stg = two stages Three Stg = three stages Four Stg = four stages FB 2Pos = face and bypass damper with 2-position valve FB Prop = face and bypass damper with proportional valve Prop Vlv = proportional valve

Pht Stg Type Staged preheating control type FILO = first on/last off EQ Run = equal runtime





Pht SD Act Preheat shutdown action Cls Vlv = close valve LoOATPos = go to low OAT position

FBPDSwOvrSetup Face & bypass damper switchover type

None = none OAT = based on outside air temperature NET = based on network input

ComHtg/Clg Coil Is there a common heating/cooling coil?

No = no Yes = yes

ComCoilType Common heating/cooling coil control type

None = none FB 2Pos = face & bypass damper with 2-position valve PropVlv = proportional valve

Clg Type Type of cooling None = none One Stg = one stage Two Stg = two stages Three Stg = three stages Four Stg = four stages FB 2Pos = face & bypass damper with 2-position valve Prop Vlv = proportional valve

Clg Stg Type Staged cooling control type FILO = first on/last off EQ Run = equal runtime

Clg SD Act Cooling shutdown action Cls Vlv = close valve LoOATPos = go to low OAT position

Htg Type Type of heating None = none One Stg = one stage Two Stg = two stages Three Stg = three stages Four Stg = four stages FB 2Pos = face & bypass damper with 2-position valve Prop Vlv = proportional valve

Htg Stg Type Staged heating control type FILO = first on/last off EQ Run = equal runtime

Htg SD Act Heating shutdown action Cls Vlv = close valve LoOATPos = go to low OAT position


Table 40: MUI Configuration Page 2 Contents Display Name Description Units/Enumeration SF Type Supply fan control type Constant = constant

volume Variable = variable volume

EF Type Exhaust fan control type None = none Constant = constant volume FanTrack = supply fan tracking BSP Control = building static pressure control

UnOcc Ctrl Unoccupied control enable Dis = disabled Ena = enabled

Hum Mode Humidification control enable Dis = disabled Ena = enabled

HumDuringUnocc Unoccupied humidification enable Dis = disabled Ena = enabled

Duct Static Alm Is there a duct static alarm input? No = no Yes = yes

Low Lim Alarm Is there a low limit alarm input? No = no Yes = yes

SF Proof Is there a supply fan proof input? No = no Yes = yes

Smoke Alm Is there a smoke alarm input? No = no Yes = yes

Restart Type Restart type Auto = automatic Manual = manual

Pwr Fail Rstrt Power fail restart enable Dis = disabled Ena = enabled


Setpoints Folder The Setpoints folder is only available to Admin users and contains two pages of adjustable setpoints. See Table 41 and Table 42. Table 41: MUI Setpoints Page 1 Contents

Display Name Description Units/Enumeration HD Temp SP Hot deck temperature setpoint °F/°C CD Temp SP Cold deck temperature setpoint °F/°C Unc Clg SP Unoccupied cooling setpoint °F/°C Occ Htg SP Occupied heating setpoint °F/°C ER SP Energy recovery setpoint °F/°C ER LL SP Energy recovery low limit setpoint °F/°C Pht LL SP Preheat low limit setpoint °F/°C FBPDSwOvr SP Face & bypass damper switchover

setpoint °F/°C

PhLockoutSP Outside air temperature lockout for preheat

°F/°C

ClgLockoutSP Outside air temperature lockout for cooling

°F/°C

HtgLockoutSP Outside air temperature lockout for heating

°F/°C

Table 42: MUI Setpoints Page 2 Contents

Display Name Description Units/Enumeration Bldg Static SP Building static pressure setpoint in. w.c. Duct Static SP Duct static pressure setpoint in. w.c. Humidity SP Humidification control setpoint % RH


Parameters Folder The Parameters folder is only available to Admin users and contains three pages of adjustable miscellaneous setpoints and unit parameters. See Table 43, Table 44, and Table 45. Table 43: MUI Parameters Page 1 Contents

Display Name Description Units/Enumeration Max PF Rst Maximum power fail restart time seconds Shutdown Dly Shutdown delay seconds AirFlowStart Airflow start delay (amount of time

allowed for the fan to prove after you command it)

seconds

AirFlow Dbnc Airflow debounce (amount of time a temporary loss of airflow is ignored before action is taken)

seconds

Stabil Dly Stabilize delay (amount of time allowed for air to circulate and stabilize temperatures before opening the dampers)

seconds

UnOcc Timer Unoccupied timer (amount of time the sequencer remains in the unoccupied cooling or heating mode after the temperature setpoint has been satisfied)

seconds

Low OAT SP Low outside air temperature setpoint °F/°C HD Rst X1 X1 parameter for hot deck reset

schedule. When the OAT is this value, the DAT is its maximum value (Y2)

°F/°C

HD Rst X2 X2 parameter for hot deck reset schedule. When the OAT is this value, the DAT is the minimum value (Y1).

°F/°C

HD Rst Y1 Y1 parameter for hot deck reset schedule (minimum discharge air temperature setpoint)

°F/°C

HD Rst Y2 Y2 parameter for hot deck reset schedule (maximum discharge air temperature setpoint)

°F/°C

CD Rst X1 X1 parameter for cold deck reset schedule. When the OAT is this value, the DAT is its maximum value (Y2)

°F/°C

CD Rst X2 X2 parameter for cold deck reset schedule. When the OAT is this value, the DAT is the minimum value (Y1).

°F/°C

CD Rst Y1 Y1 parameter for cold deck reset schedule (minimum discharge air temperature setpoint)

°F/°C


Table 44: MUI Parameters Page 2 Contents

Display Name Description Units/Enumeration CD Rst Y2 Y2 parameter for cold deck reset schedule

(maximum discharge air temperature setpoint)

°F/°C

ERLowLimDly Energy recovery low limit delay seconds ERLimMaxSpd Energy recovery limited maximum speed % PhtLimMaxPos Preheating limited max position % open Pht Flush Pos Preheating flush position % open PhtLowOAPos Preheating low OAT position % open Pht Inter St Preheating interstage delay time seconds Clg Lim Max Cooling limited max position % open Clg Flush Pos Cooling flush position % open ClgLowOATPos Cooling low OAT position % open Clg Inter St Cooling interstage delay time seconds

Table 45: MUI Parameters Page 3 Contents

Display Name Description Units/Enumeration Htg Lim Max Heating limited max position % open Htg Flush Pos Heating flush position % open HtgLowOATPos Heating low OAT position % open Htg Inter St Heating interstage delay time seconds Htg Ramp Rate Heating ramp rate %/minute SF Ramp Rate Supply fan ramp rate (rate of change in fan

speed when ramping up the fan speed) %/minute

SF High Spd High speed calibration point for supply fan (used when Fan Control = Fan Tracking to scale the supply fan command so the return fan moves the desired amount of air)

%

SF Low Spd Low speed calibration point for supply fan (used when Fan Control = Fan Tracking to scale the supply fan command so the return fan moves the desired amount of air)

%

EF Low Spd High speed calibration point for exhaust fan (used when Fan Control = Fan Tracking to scale the supply fan command so the exhaust fan moves the desired amount of air)

%

EF Low Spd Low speed calibration point for exhaust fan (used when Fan Control = Fan Tracking to scale the supply fan command so the exhaust fan moves the desired amount of air)

%

Fan On Dly Fan on delay (the amount of time between starting the fans)

seconds

Fan Off Dly Fan off delay (the amount of time between stopping the fans)

seconds

TempOccTime Temporary occupancy time minutes


PID Parameters Folder The PID Parameters folder is only available to Admin users and contains two pages of adjustable PID tuning parameters, such as proportional bands and integration times. See Table 46 and Table 47. Table 46: MUI PID Parameters Page 1 Contents

Display Name Description Units/Enumeration ER PB Energy recovery proportional band °F/°C ER IT Energy recovery integration time seconds ER Sat Tm Energy recovery saturation time seconds ERLL PB Energy recovery low limit proportional

band °F/°C

ERLL IT Energy recovery low limit integration time

seconds

ERLL Sat Tm Energy recovery low limit saturation time seconds Pht PB Preheating proportional band °F/°C Pht IT Preheating integration time seconds Pht Sat Tm Preheating saturation time seconds PhtLL PB Preheating low limit proportional band °F/°C PhtLL IT Preheating low limit integration time seconds PhtLL Sat Preheating low limit saturation time seconds Clg PB Cooling proportional band °F/°C Clg IT Cooling integration time seconds

Table 47: MUI PID Parameters Page 2 Contents

Display Name Description Units/Enumeration Clg Sat Tm Cooling saturation time seconds Htg PB Heating proportional band °F/°C Htg IT Heating integration time seconds Htg Sat Tm Heating saturation time seconds Duct Static PB Duct static pressure control proportional

band in. w.c.

Duct Stat IT Duct static pressure control integration time

seconds

Bldg Stat PB Building static pressure control proportional band

in. w.c.

Bldg Stat IT Building static pressure control integration time

seconds

Dehum PB Dehumidifier control proportional band % RH Dehum IT Dehumidifier control integration time seconds Dehum Sat Dehumidifier control saturation time seconds Humid PB Humidifier control proportional band % RH Humid IT Humidifier control integration time seconds


Balancer Folder The Balancer folder is only available to Admin users and contains one page of commandable points useful for air and/or water balancing. See Table 48. Table 48: MUI Balancer Page Contents

Display Name Description Units/Enumeration Preheat 1 override state Auto = auto (return to

control) Pos = go to desired position Open = go open Close = go closed

Pht1 Ovrd

Preheat 1 override position % open Preheat 2 override state Auto = auto (return to


Pht2 Ovrd

Preheat 2 override position % open Heating valve override state Auto = auto (return to


Htg Vlv Ovrd

Heating valve override position % Cooling valve override state Auto = auto (return to


Clg Vlv Ovrd

Cooling valve override position % Energy recovery override state Auto = auto (return to


ER Ovrd

Energy recovery override position % Flw Fault Rst Flow fault reset

To reset the proof of flow switch shutdown, set this point to Reset and then set it back to Normal.

Normal = normal Reset = reset


Time Folder The Time folder is available to all users and contains one page of points allowing the user to set the time, date, time zone, and units of measure. See Table 49. Table 49: MUI Time Page Contents

Display Name Description Units/Enumeration Time Time HH:MM:SS Date Date mm/dd/yy Unit of Measure Units of measure DegC = °C (SI)

DegF = °F (US) Format Date format dd/mm/yyyy

mm/dd/yyyy yyyy/mm/dd

Time Zone Time zone GMT = Greenwich Mean Time CET = Central Europe Time EET = Eastern Europe Time AST = Atlantic Standard Time EST = Eastern Standard Time CST = Central Standard Time MST = Mountain Standard Time PAST = Pacific Standard Time AKST = Alaska Standard Time AEST = Eastern Standard Time ACST = Central Standard Time New_Zealand = New Zealand East_Brazil = East Brazil West_Brazil = West Brazil DST_Disabled = disabled


Schedulers Folder The Schedulers folder consists of two pages, providing an interface for users to set the local occupancy schedule.

The On Off Schedulers page provides users the ability to assign the occupied (On) and unoccupied (Off) times for Normal and Holiday days.

The Calendar page provides users the ability to identify a specific date as either Normal or Holiday.

Password Folder The Password folder contains one page providing user access management for the MUI. Access to certain folders is restricted to specific user types. Two default users are defined: All and Admin. See Table 53.

Table 50: MUI User Passwords and Access Rights User Password Accessible Folders All None—Log on is not required Home Page

Status Modes Time Password

Admin 3333 All of the above plus: Config Setpoints Parameters PID Parameters Balancer Schedulers

MUI Status LEDs The MUI contains 10 discrete LEDs providing quick visualization of certain operational status. The LEDs are configured as follows: Table 51: MUI Status LED Configuration

LED Symbol Description Blinking Condition Power

Occupancy status On when occupied

Off when unoccupied Blinking slow when in standby

Alarm ! Unused LED 1 1 Stage 1 cooling status Off when off

On when on LED 2 2 Stage 2 cooling status Off when off

On when on LED 3 3 Stage 3 cooling status Off when off

On when on Continued on next page . . .


LED (Cont.)

Symbol Description Blinking Condition

LED 4 4 Stage 4 cooling status Off when off On when on

LED 5 5 Unused LED 6 6 Unused LED 7 7 Unused LED 8 8 Unused

Accessing a Folder in the MUI To access a folder in the MUI:

1. On the Home Page, press the ESC key. The Main Menu appears with folder names.

Each folder contains one or more pages of information. None of the folders are password-protected.

2. Press the up or down arrow keys to select the desired folder.

3. Press the OK key to view the folder contents.

Note: Information displayed on the MUI can include read-only data points as well as writable configuration settings, setpoints, and parameters.

Changing a Configuration Setting, Setpoint, or Parameter in the MUI To change a configuration setting, setpoint, or parameter:

1. Navigate to the page containing the desired point.

2. Press the Enter key to enter the edit mode.

3. Press the up or down arrow to select the desired point.

4. Press the Enter key again.

5. Press the up or down arrow key to toggle the entry to the desired setting or value.

6. Press the Enter key to accept or the Clear key to reject.


LCD2x4 User Interface The LCD2x4 user interface is an optional hardware accessory that consists of the following:

• 2-line by 4-character LCD

• graphical status icons

• four keys: up, down, clear (C), and OK

The LCD2x4 user interface is available only as an integrated part of the FX06, FX07, and FX14 packaging.

Figure 43: FX07 with Integral LCD2x4 User Interface


LCD2x4 User Interface Capabilities The OADD AHU application template includes a predefined LCD2x4 user interface configuration. The LCD2x4 configuration organizes information into folders and pages which you navigate using the keypad and display.

You use the LCD2x4to perform the following functions:

• monitor control points and system status

• adjust setpoints and unit parameters

• initiate overrides

• select the desired display units of measures

LCD2x4 User Interface Navigation Upon power up, the LCD2x4 displays the Home Page showing system information. See Table 52 for a list of the Home Page contents. Table 52: LCD2x4 User Interface Home Page Contents

Display Name Description Units/EnumerationCD TEMP Cold deck temperature °F/°C

HD TEMP Hot deck temperature °F/°C

CD Press Cold deck pressure in. w.c.

HD Press Hot deck pressure in. w.c. ZN TEMP Zone temperature °F/°C

OA TEMP Outside air temperature °F/°C MODE Mode auto = auto PRI HTG OUT Primary heating output %

SEC HTG OUT Secondary heating output % CLG OUT Cooling output %

ECON OUT Economizer output %

Act CD set[t Active cold deck setpoint °F/°C Act HD set[t Active hot deck setpoint °F/°C


In addition to the Home Page, the LCD2x4 also includes 17 pages of information which you access from the LCD2x4’s Main Menu. These folders appear in Table 53.

Table 53: OADD AHU LCD2x4 Pages Folder User Access

Level Contents

Config Admin OADD AHU application configuration settings (page 1)

Analog Inputs All Analog inputs Digital Inputs All Digital inputs Analog Outputs All Analog outputs Digital Outputs All Digital outputs Setpoints Admin Adjustable setpoints (page 1) Parameters 1 Admin Miscellaneous setpoints and parameters

(page 1) Parameters 2 Admin Miscellaneous setpoints and parameters

(page 2) PID Parameters Admin Adjustable tuning parameters Modes All Sequencer states and modes Time All Time and date settings Password All User management Balancer Admin Override points FX Setup Admin Adjustable LCD display parameters Schedulers Admin Schedulers


Config Page The Config page is only available to Admin users. It contains configuration settings made during the Application Wizard session. These settings are read-only. You cannot change the OADD AHU configuration from the LCD2x4. See Table 54. Table 54: LCD2x4 User Interface Config 1 Page Contents

Display Name Description Units/Enumeration Temp ctrl Temperature control strategy Cons = Cons

Dato = DAT Reset by OAT

ER Type Energy recovery type None = none GLPV = Glycol proportional GL2P = Glycol two position EWPV = energy wheel proportional EW2p = energy wheel two position

pht type Type of preheating None = None 11stg = One stage 2stg = Two stages 3stg = Three stages 4stg = Four stages FB2P = Face and Bypass two position FBPV = Face and Bypass two proportional valve Prop = Proportional valve

pht stg type Staged preheating control type FILO = first on/last off EQUA = equal runtime

pht sd act Preheat shutdown action CLS = Close valve LOAP = Low OAT position





fbpd sw ovr setup Face & bypass damper switchover type

None = None OAT = Outside air NET = Network

clg type Type of cooling None = None 11stg = One stage 2stg = Two stages 3stg = Three stages 4stg = Four stages FB2P = Face and Bypass two position FBPV = Face and Bypass two proportional valve Prop = Proportional valve

clg stg type Staged cooling control type FILO = first on/last off EQUA = equal runtime

clg sd type Cooling shutdown action CLS = Close valve LOAP = Low OAT position

htg type Type of heating None = None 11stg = One stage 2stg = Two stages 3stg = Three stages 4stg = Four stages FB2P = Face and Bypass two position FBPV = Face and Bypass two proportional valve Prop = Proportional valve

htg stg type Staged heating control type FILO = first on/last off EQUA = equal runtime

htg SD ACt Heating shutdown action CLS = Close valve LOAP = Low OAT position

sf type Supply fan control type Cons = Constant volume Vari = Variable volume

Ef type Exhaust fan control type None = None CV = Constant volume SFT = Supply fan tracking BSP = Building static pressure

unocc ctrl Unoccupied control enable DIS = Disable ENA = Enable





Hum ctrl Humidification control DIS = Disable ENA = Enable

hum during unocc

Unoccupied humidification enable DIS = Disable ENA = Enable

duct static alarm

Is there a duct static alarm input? NO = no YES = yes

low Temp alarm Is there a low temperature alarm input?

NO = no YES = yes

smoke alrm Is there a smoke alarm input? NO = no YES = yes

restart type Restart type Auto = Automatic reset Manu = Manual reset

power fail restart

Power fail restart enable DIS = Disable ENA = Enable


Analog Inputs Page The Analog Inputs page is available to all users. It contains status of the analog inputs. See Table 55. Table 55: LCD2x4 User Interface Analog Inputs Page Contents

Display Name Description Units/Enumeration CD temp Cold deck temperature °F/°C

HD temp Hot deck temperature °F/°C

CD Press Cold deck pressure in. w.c HD Press Hot deck pressure in. w.c

zn temp Zone temperature °F/°C

oa temp Outside air temperature °F/°C Ea temp Exhaust air temperature °F/°C

ZN/EA Rh Zone/exhaust air humidity % bldg static Building static pressure in. w.c.

ZN/EA Rh Zone/exhaust air humidity %

ER LL Temp Energy recovery low limit temperature

°F/°C


Digital Inputs Page The Digital Inputs page is available to all users. It contains status of the digital inputs. See Table 56. Table 56: LCD2x4 User Interface Digital Inputs Page Contents

Display Name Description Units/Enumeration sf status Supply fan status Off = off

On = on

Ef status Exhaust fan status Off = off On = on

unit enable status

Unit enable input status Off = off On = on

smoke alarm Smoke alarm input status Norm = normal Alm = in alarm

high static alarm

High static alarm input status Norm = normal Alm = in alarm

low limit alarm Low limit alarm input status Norm = normal Alm = in alarm

manual fault reset

Manual fault reset status Norm = normal Alm = in alarm

pht pump status Preheat pump status Off = off On = on

htg pump status Heating pump status Off = off On = on

clg pump status Cooling pump status Off = off On = on

ER Status Energy recovery status Off = off On = on

Analog Outputs Page The Analog Outputs page is available to all users. It contains status of the analog outputs. See Table 57. Table 57: LCD2x4 User Interface Analog Outputs Page Contents

Display Name Description Units/Enumeration SF output Supply fan output % open

Ef output Exhaust fan output % open

clg vlv output Cooling valve output % open

htg vlv output Heating valve output % open Pht1 output Preheating 1 output % open

pht2 output Preheating 2 output % open

humid output Humidity output % open ER Output Energy recovery output % open


Digital Outputs Page The Digital Outputs page is available to all users. It contains status of the digital outputs. See Table 58. Table 58: LCD2x4 User Interface Digital Outputs Page Contents

Display Name Description Units/Enumeration sf cmd Supply fan command Off = off

On = on

Ef cmd Exhaust fan command Off = off On = on

clg 1 cmd Cooling stage 1 command Off = off On = on




htg 1 cmd Heating stage 1 command Off = off On = on




pht 1 cmd Preheat stage 1 command Off = off On = on




humid cmd Humidifier command Off = off On = on

ER Cmd Energy recovery command Off = off On = on


Setpoints Page The Setpoints page is only available to Admin users. It contains adjustable setpoints. See Table 59. Table 59: LCD2x4 User Interface Setpoints Page Contents

Display Name Description Units/Enumeration HD Temp sp Hard deck temperature setpoint °F/°C

CD Temp SP Cold deck temperature setpoint °F/°C

unc CLg sp Unoccupied cooling setpoint °F/°C

unc htg sp Unoccupied heating setpoint °F/°C ER SP Energy recovery setpoint °F/°C

ER LL PP Energy recovery low limit setpoint °F/°C

pht lockout sp Outside air temperature lockout for preheat

°F/°C

clg lockout sp Outside air temperature lockout for cooling

°F/°C

htg lockout sp Outside air temperature lockout for heating

°F/°C

bldg static sp Building static pressure setpoint in. w.c.

Duct static sp Duct static pressure setpoint in. w.c. humidity sp Humidification control setpoint % RH


Parameters 1 Page The Parameters 1 page is only available to Admin users. It contains adjustable miscellaneous setpoints and unit parameters. See Table 60. Table 60: LCD2x4 User Interface Params 1 Page Contents

Display Name Description Units/Enumeration max pf reset time Maximum power fail restart time seconds

shutdown dly Shutdown delay seconds airflow start dly Airflow start delay (amount of time

allowed for the fan to prove after it has been commanded)

seconds

airflow dbnc dly Airflow debounce (amount of time a temporary loss of airflow is ignored before action is taken)

seconds

stabilize dly Stabilize delay (amount of time allowed for air to circulate and stabilize temperatures before opening the dampers)

seconds

unocc timer Unoccupied timer (amount of time the sequencer remains in the unoccupied cooling or heating mode after the temperature setpoint has been satisfied)

seconds

low oat sp Low outside air temperature setpoint

°F/°C

HD rst x1 X1 parameter for hot deck reset schedule. When the OAT is this value, the DAT is its maximum value (Y2)

°F/°C

HD rst x2 X2 parameter for hot deck reset schedule. When the OAT is this value, the DAT is tis minimum value (Y1).

°F/°C

HD rst y1 Y1 parameter for hot deck reset schedule (minimum discharge air temperature setpoint)

°F/°C

HD rst y2 Y2 parameter for hot deck reset schedule (maximum discharge air temperature setpoint)

°F/°C

CD rst x1 X1 parameter for cold deck reset schedule. When the OAT is this value, the DAT is its maximum value (Y2)

°F/°C

CD rst x2 X2 parameter for cold deck reset schedule. When the OAT is this value, the DAT is tis minimum value (Y1).

°F/°C



Display Name (Cont.) Description Units/Enumeration CD rst y1 Y1 parameter for cold deck reset

schedule (minimum discharge air temperature setpoint)

°F/°C

CD rst y2 Y2 parameter for cold deck reset schedule (maximum discharge air temperature setpoint)

°F/°C

ER low lim dly Emergency recovery low limit delay

seconds

ER LIM Max Spd Emergency recovery limited maximum speed

%

ER Max Speed Emergency recovery maximum speed

%

pht lim max Preheating limited max position % open

pht flush pos Preheating flush position % open pht low oat pos Preheating low OAT position % open pht interstage time

Preheating interstage delay time seconds


Parameters 2 Page The Parameters 2 page is only available to Admin users. It contains adjustable miscellaneous setpoints and unit parameters. See Table 61. Table 61: LCD2x4 User Interface Params 1 Page Contents

Display Name Description Units/Enumeration clg lim max Cooling limited max position % open

clg flush pos Cooling flush position % open

clg low oat pos Cooling low OAT position % open clg interstage time

Cooling interstage delay time seconds

htg lim max Heating limited max. position % open htg flush pos Heating flush position % open

htg low oat pos Heating low OAT position % open htg interstage time

Heating interstage delay time seconds

Htg ramp Rate Heating ramp rate %/minute

sf ramp rate Supply fan ramp rate (rate of change in fan speed when ramping up the fan speed)

%

high sf speed High speed calibration point for supply fan (used when Fan Control = Fan Tracking to scale the supply fan command so the return fan moves the desired amount of air)

%

low sf speed Low speed calibration point for supply fan (used when Fan Control = Fan Tracking to scale the supply fan command so the return fan moves the desired amount of air)

%

high Ef speed High speed calibration point for exhaust fan (used when Fan Control = Fan Tracking to scale the supply fan command so the exhaust fan moves the desired amount of air)

%

low Ef speed Low speed calibration point for exhaust fan (used when Fan Control = Fan Tracking to scale the supply fan command so the exhaust fan moves the desired amount of air)

%

fan off dly Fan off delay (the amount of time between stopping the fans)

seconds

fan on dly Fan on delay (the amount of time between starting the fans)

seconds

temp occ time Temporary occupancy time minutes


PID Parameters Page The PID Parameters page is available only to Admin users. It contains adjustable PID tuning parameters, such as proportional bands, integration times, and saturation times. See Table 62. Table 62: LCD2x4 User Interface PID Parameters Page Contents

Display Name Description Units/Enumeration ER Prop Band Energy recovery proportional

band °F/°C

Er int Time Energy recovery integration time seconds

Er ll Prop Band Energy recovery low limit proportional band

°F/°C

ErLL int Time Energy recovery low limit integration time

seconds

pht Prop Band Preheating proportional band °F/°C

Pht int Time Preheating integration time seconds pht ll Prop Band Preheat low limit proportional

band °F/°C

pht ll int Time Preheat low limit integration time seconds

clg Prop Band Cooling proportional band °F/°C clg int Time Cooling integration time seconds

htg Prop Band Heating proportional band °F/°C htg int Time Heating integration time seconds duct static Prop Band

Duct static pressure control proportional band

in. w.c.

duct static int Time

Duct static pressure control integration time

seconds

bldg static Prop Band

Building static pressure control proportional band

in. w.c.

bldg static int Time

Building static pressure control integration time

seconds

hum Prop Band Humidifier control proportional band

%RH

hum int Time Humidifier control integration time seconds


Modes Page The Modes page is available all users. The Modes page contains the status of various sequencer states. See Table 63. Table 63: LCD2x4 User Interface Active Setpoints Page Contents

Display Name Description Units/Enumeration OCC MODE Occupied mode OccD = occupied

Unoc = unoccupied Bypa = bypass Stan = standby Inva = invalid

UNC DAT MODE Unoccupied discharge air temperature control mode

Sat = satisfied Cool = cool Heat = heat SD = shutdown Dis = disabled

Safety mode Safety mode Norm = normal Press = press DPrs = depress Purg = purge SD = shutdown PrSD = Preshutdown

no air mode No airflow mode Norm = normal SRF = fault, self-reset MRF = fault, manual reset

unit enable mode

Unit enable mode Dis = disabled Ena = enabled

start/stop Start/stop mode Off = off SFf = supply fan start first RfF = return fan start first RSF = ramp supply fan Stab = stabilize system Roa = ramp dampers On = on Clsd = close dampers RFSF = return fan stop first • SFSF = supply fan stop first Fnof = fans off Faul = fan fault

ER Suit Mode Emergency recovery suit mode

None = none cool= cool Heat = heat





pht state Preheating state Off = off Max = max Lim = limited max Watr = water flush LoaP = low OAT position InsD = instant shutdown Hold = hold Main = main ctrl Aux1 = aux ctrl1 Aux2 = aux ctrl2 LOAS = low OAT startup

htg state Heating state Off = off Max = max Lim = limited max Watr = water flush LoaP = low OAT position InsD = instant shutdown Hold = hold Main = main ctrl Aux1 = aux ctrl1 Aux2 = aux ctrl2 LOAS = low OAT startup

clg state Cooling state Off = off Max = max Lim = limited max Watr = water flush LoaP = low OAT position InsD = instant shutdown Hold = hold Main = main ctrl Aux1 = aux ctrl1 Aux2 = aux ctrl2 LOAS = low OAT startup

sf state Supply fan state Off = off Min = min Ramp = ramp SPCt = SP ctrl





Ef state Exhaust fan state Off = off Max = max Min = min Hold = hold BSP = BSP Trac = track

HD State Hot deck state SAT = satisfied IDLE = idle Ctrl = control SD = shutdown

Time Page The Time page is available to all users and contains the time, date, time zone, and units of measure. See Table 64. Table 64: LCD2x4 User Interface Time Page Contents

Display Name Description Units/Enumeration HOUR Hour 0-23

MINUTE Minute 0-59

MONTH Month 1-12

DAY Day 1-31 YEAR Year 2000-2999

DAYWEEK Day of the week 0 = Sunday 1 = Monday 2 = Tuesday 3 = Wednesday 4 = Thursday 5 = Friday 6 = Saturday





TIME ZONE Time zone GMT = Greenwich Mean Time CET = Central Europe Time EET = Eastern Europe Time AST = Atlantic Standard Time EST = Eastern Standard Time CST = Central Standard Time MST = Mountain Standard Time PAST = Pacific Standard Time AKST = Alaska Standard Time AEST = Eastern Standard Time ACST = Central Standard Time NEWZ = New Zealand EBRA = East Brazil WBRA = West Brazil DDIS = disabled

Balancer Page The Balancer page is only available to Admin users. The Balancer page contains overrides useful for air and water balancing. See Table 65. Table 65: LCD2x4 User Interface Balancer Page Contents

Display Name Description Units/Enumeration pht1 ovrd state Preheat 1 override state Auto = auto (return to

control) pos = go to desired position open = go open clos = go closed

pht1 ovrd pct Preheat 1 override position % open pht2 ovrd state Preheat 2 override state Auto = auto (return to

control) pos = go to desired position open = go open clos = go closed

pht2 ovrd pct Preheat 2 override position % open htg vlv ovrd state

Heating valve override state Auto = auto (return to control) pos = go to desired position open = go open clos = go closed

htg ovrd pct Heating valve override position % open Continued on next page . . .


Display Name (Cont.) Description Units/Enumeration clg vlv ovrd state

Cooling valve override state Auto = auto (return to control) pos = go to desired position open = go open clos = go closed

clg vlv ovrd pct Cooling valve override position % open

ER Ovrd State Emergency recovery override state

Auto = auto (return to control) pos = go to desired position open = go open clos = go closed

ER Ovrd Pct Emergency recovery override position

% open

flow fault reset Flow fault reset To reset the proof of flow switch shutdown, set this point to Reset and then set it back to Normal.

norm = normal rese = reset

FX Setup The FX Setup page is only available to Admin users. The FX Setup page contains configuration settings for the LCD2x4. See Table 66. Table 66: LCD2x4 User Interface FX Setup Page Contents

Display Name Description Units/Enumeration DISPLAY UNITS Units of measure displayed on

the LCD2x4 DEGF = Imperial (°F) DEGC = SI (°C)

LCD CONTRAST Contrast setting for the LCD2x4 LOW = low MED = medium HIGH = high

BACKLIGHT TIME MIN

Backlight time for the LCD2x4 OFF = always off 2 = 2 minutes 10 = 10 minutes 20 = 20 minutes ON = always on

DEFAULT COLOR Default backlight color for the LCD2x4

BLUE = blue RED = red


Password Page The Password page provides user access management for the MUI. Access to certain pages is restricted to specific user types. Two default users are defined: All and Admin. See Table 67.

Table 67: LCD2x4 User Interface User Passwords and Access Rights User Password Accessible Pages All None—Log on is not required Home Page

Analog Inputs Digital Inputs Analog Outputs Digital Outputs Modes Time Password

Admin 3333 All of the above plus the following: Config 1 Config 2 Setpoints 1 Setpoints 2 Parameters 1 Parameters 2 PID Parameters Balancer FX Setup Schedulers

Events Page No events are configured.

Schedulers Page The Schedulers page provides an interface for users to set the local occupancy schedule.

Graphical Status Icons None of the LCD2x4 user interface graphical status icons are configured to light.

Accessing a Page in the LCD2x4 UI To access a page in the LCD2x4 UI:

1. On the Home Page, press the Clear (C) key. The Main Menu appears with page names.

2. Press the up or down arrow keys to select the desired page.

Note: Some pages require Admin logon.


3. Press the OK key to view the page contents. Use the up and down arrows to scroll through the points.

Note: Information displayed on the LCD2x4 UI can include read only data points as well as writable configuration settings, setpoints, and parameters.

Changing a Configuration Setting, Setpoint, or Parameter in the LCD2x4 UI To change a configuration setting, setpoint, or parameter:

1. Navigate to the page containing the desired point.

2. Use the Up and Down arrows to display the desired point to change.

3. Press the Enter key to enter the edit mode. The point’s setting/value blinks while in the edit mode.

4. Press the up or down arrow to toggle the entry to the desired setting or value.

5. Press the Enter key to accept the change or the Clear (C) key to reject the change.


Supervisor Interface The OADD AHU application template contains predefined mappings between the application points and N2 points, LONWORKS® network variables, and BACnet® objects. After you select the protocol type in the Application Wizard, the corresponding network profile is added to the OADD AHU application file.

The actual network profile depends on which configuration settings were selected in the Application Wizard. The Protocol Documentation and Network Resource Files generated by the Application Wizard provide you with details about the actual network profile. Make sure that you make the appropriate selections in the Application Wizard Preferences dialog, or else the desired files are not generated.

• If the Generate Protocol Documentation option was selected in the Application Wizard Preferences dialog, then the network documentation is generated at the end of the Application Wizard session.

• If the Generate Network Protocol Files option was selected, then the N2 Print files (*.prn) or LONWORKS network resource files (*.xif, *.typ, *.enu, *.ftp, *.typ) are generated at the end of the Application Wizard session.

BACnet integration does not require resource files.

100% outside air dual duct (oadd) air handling unit (ahu

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