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Technical ManualLiebert® DM Series Air Conditioner

Precision CoolingFor Business-Critical Continuity™

Liebert_DM Series Air Conditioner Technical Manual Version V1.0 Revision date BOM

Emerson Network Power provides customers with technical support. Users may contact the nearest Emerson local sales office or service center and company headquarters.

Copyright © 2012 by Emerson Network Power Co., Ltd.

All rights reserved. The contents in this document are subject to change without notice.

Emerson Network Power Co., Ltd.

Address: No.1 Kefa Rd., Science & Industry Park, Nanshan District 518057, Shenzhen China

Postcode: 518057

Customer Service Hotline: 4008876510

Homepage: www.emersonnetworkpower.com.cn

E-mail: [email protected]

mailto:[email protected]

Contents

Chapter 1 Preface ............................................................................................................................................................... 1

1.1 Special Requirements On The Equipment Room Environment ............................................................................ 1 1.2 Liebert_DM Series AC – Designed For Equipment Room .................................................................................... 1

Chapter 2 Overview ............................................................................................................................................................ 3

2.1 Appearance .......................................................................................................................................................... 3 2.2 Model Description ................................................................................................................................................. 3 2.3 Product Introduction .............................................................................................................................................. 3 2.4 Main Components ................................................................................................................................................. 4

2.4.1 Indoor Unit ................................................................................................................................................. 4 2.4.2 Outdoor Unit .............................................................................................................................................. 4

2.5 Options ................................................................................................................................................................. 5 2.5.1 Humidifier .................................................................................................................................................. 5 2.5.2 Heater ........................................................................................................................................................ 5 2.5.3 Remote Monitor ......................................................................................................................................... 5 2.5.4 Energy-Saving Card .................................................................................................................................. 5 2.5.5 Power SPD ................................................................................................................................................ 5

Chapter 3 Technical Parameter .......................................................................................................................................... 6

3.1 Technical Parameter Of The Indoor Unit .............................................................................................................. 6 3.2 Technical Parameter Of The Outdoor Unit ............................................................................................................ 7 3.3 Mechanical Parameter .......................................................................................................................................... 7

3.3.1 Indoor Unit ................................................................................................................................................. 7 3.4 Outdoor Unit.......................................................................................................................................................... 8 3.5 Operation Environment ......................................................................................................................................... 9

Chapter 4 Application Guidline .......................................................................................................................................... 10

4.1 General Arrangement ......................................................................................................................................... 10 4.2 General Principles ............................................................................................................................................... 10 4.3 Piping .................................................................................................................................................................. 11 4.4 Model Configuration ............................................................................................................................................ 12 4.5 Cooling Circulation .............................................................................................................................................. 12

Chapter 5 Micro-Processing controller .............................................................................................................................. 13

5.1 Appearance ........................................................................................................................................................ 13 5.2 LCD Screen ........................................................................................................................................................ 13 5.3 Control Buttons ................................................................................................................................................... 13

5.3.1 Function Description ................................................................................................................................ 13 5.3.2 Operation Example .................................................................................................................................. 14

5.4 Control Screen .................................................................................................................................................... 14 5.4.1 ON Screen ............................................................................................................................................... 14 5.4.2 Normal Screen ......................................................................................................................................... 14 5.4.3 Password Screen .................................................................................................................................... 15

5.5 Control Logic ....................................................................................................................................................... 15

5.5.1 Cooling logic ............................................................................................................................................ 15 5.5.2 Heating Logic ........................................................................................................................................... 16 5.5.3 Dehumidifying Logic ................................................................................................................................ 16 5.5.4 Humidifying Logic .................................................................................................................................... 18 5.5.5 Outdoor Fan Control ................................................................................................................................ 18 5.5.6 Economy Mode Control ........................................................................................................................... 19 5.5.7 Sleep Mode Control ................................................................................................................................. 19 5.5.8 Host/Standby Unit Control ....................................................................................................................... 19

5.6 Alarm Function .................................................................................................................................................... 20 5.6.1 Alarm Category ........................................................................................................................................ 20 5.6.2 Alarm State And History .......................................................................................................................... 20 5.6.3 Alarm Prerequisites And Handling Methods ............................................................................................ 20

5.7 Other Functions .................................................................................................................................................. 23 5.7.1 Real-Time Clock ...................................................................................................................................... 23 5.7.2 Operating Record .................................................................................................................................... 23 5.7.3 Parameter Protection ............................................................................................................................... 23 5.7.4 Password Protection ................................................................................................................................ 23 5.7.5 Shutdown Mode ....................................................................................................................................... 23 5.7.6 Diagnosis Output ..................................................................................................................................... 24 5.7.7 Sensor Calibration ................................................................................................................................... 24 5.7.8 Deployment Management........................................................................................................................ 24

Appendix 1 Menu Structure ............................................................................................................................................... 25

Appendix 2 Wiring Diagram ............................................................................................................................................... 26

Appendix 3 Glossary ......................................................................................................................................................... 28

Chapter 1 Preface 1

Liebert DM Series Air Conditioner Technical Manual

Chapter 1 Preface

This chapter mainly introduces the special requirements on the equipment room environment and the features and advantages of Liebert_DM series air conditioners (AC for short).

1.1 Special Requirements For The Equipment Room Environment

The precise environment control is very important for the operation of the computers , therefore, the computers have strict requirements for the equipment room environment, which cannot be achieved by the commercial air conditioners designed for comfort. The relevant requirements mainly include the following four aspects. Temperature control: Huge amount of sensible heat is generated when computers and exchanges are operating in the equipment room, whose density is 6 to 10 times of that of the general offices. To ensure that the computers and the devices exert their optimal effect, the temperature of the equipment room is best controlled within 24°C±1°C; This requires that the AC units have sufficient cooling capacity and timely response regulatory capacity to cope with drastic changes in temperature, which cannot be implemented by the commercial air conditioners. Humidity control: In computer room, ultra-high or ultra-low humidity will damage the computers. The ultra-high humidity makes the air moisture condense to form condensation water in the computers, resulting in short-circuit or damage of the host hardware. The ultra-low humidity will make the static electricity generate in the computer room, making the computers unable to operate or even crash. The commercial air conditioners cannot control the humidity within the required range. Airflow / cleanliness control: Computers and exchanges will produce huge sensible heat during the operation. To eliminate the heat rapidly, The ACs are required to have large enough large cooling cycle airflow and long blowing distance. Besides, because of the strict requirement of air cleanliness, the AC should provide an airflow equivalent to the ventilating rate of 30 times per hour, so as to filter the air. The commercial ACs cannot achieve these. All-year-round running: The commercial ACs (cooling operation) are only used in summer and they only run for 8 ~ 10 hours each day. In the equipment room, however, the ACs are required to work all year round even in winter when the temperature reached -34°C outdoors.

1.2 Liebert_DM Series AC – Designed For Equipment Room

The Liebert_DM series AC includes units with a cooling capacity of 7.5kW and 12.5kW. You can configure them freely to meet different requirements of large-, medium-, and small-sized equipment rooms and base stations. Besides, the AC has precise temperature/ humidity control and reliability design, fully meeting the special use environment requirement of the equipment rooms. Special development: As a part of the integration solution to equipment room, the Liebert_DM series ACs are specially designed for the electrical devices and provides a proper environment for the running of the precise devices, such as sensitive devices, industry process devices, communication devices and computers. Considerate design: Being concerned about inter-device practical applications, the Liebert_DM series ACs are designed to keep the overall layout between devices and ensure onsite installation and maintenance. Saving space: The Liebert_DM series AC occupies 0.3 m2 and a total of 1 m2 area is required plus the maintenance space. Precise control: The precise control system of the Liebert_DM series ACs implement precision control over indoor environment, guaranteeing the safe working and stable running of devices to a maximum degree. For the indoor unit control panel, see Figure 1-1.

2 Chapter 1 Preface


Figure 1-1 Control board of the indoor unit

Outstanding man-machine interface: The Liebert_DM series ACs provide a large Chinese/English LCD, a user-friendly man-machine interface and an expert diagnosis system, as well as implement multi-level password protection (avoid misoperation) and intelligent display of running states. High reliability: Relying on the excellent quality and considerate services of Emerson, the Liebert_DM series ACs ensure 24-hour reliable running all year round. Strong adaptability to power grid: The Liebert_DM series ACs allow a wide range of voltage and provide the following distinctive functions: unique phase loss protection, phase-sequence detection and protection, automatic high-voltage & low-voltage detection and protection, self-recovery upon power failure. All-weather operation: According to the distinct heating load feature of equipment rooms, the Liebert_DM series ACs implement 24-hour running all year round in temperature ranging from -15°C to +45°C. If a Lee-Temp outdoor unit is configured, the allowed running temperature ranges from -34°C to +45°C. Strong network management: Being configured with a standard RS485 monitor interface, the Liebert_DM series ACs implement flexible automatic switchover between active and standby devices, work shift, remote turn-off and turn-on, remote alarm, and fault query and troubleshooting over standard telecommunication protocols. Easy maintenance: The Liebert_DM series ACs provide a full front maintenance structure, facilitating maintenance. Table 1-1 describes the differences between the Liebert_DM series ACs and commercial ACs.

Table 1-1 Differences between the Liebert_DM series ACs and commercial ACs

Design focus Liebert_DM series AC Commercial AC Precision ±1°C; ±1%RH Generally ±3°C Temperature control Humidifying and dehumidifying control None in general Monitoring Local and romote monitoring None All-rear-round continually operating All-year-around cooling No cooling needed in winter Testing before delivery Strict requirement Simple testing Control design Precise control CPU Cleanliness High Low

ON

J13 Board power supply input

J28 Output, such as electric heater output

J18 SCR output to contactor

J34 Temp/Hum detection board J23 Pressure sensor

J14 Monitoring

J12 Display board power supply

J39 Display board data lineJ21 Switch input, such as high pressure switchJ31 DI input power supply

J19 Remote switch

Chapter 2 Overview 3


Chapter 2 Overview

This chapter expounds the appearance, model description, product introduction, components and variety of accessory options.

2.1 Appearance

Taking the indoor unit of the Liebert_DM series air conditioner as an example, the appearance as shown in Figure 2-1.

Figure 2-1 Indoor unit of the air conditioner

2.2 Model Description

The model description of the air conditioner is shown in Figure 2-2.

Figure 2-2 Model description

2.3 Product Introduction

The Liebert_DM AC is a small precise environment control system, specially designed for cooling the electrical devices. It is applicable to environment control in equipement room and computer room. Featuring high reliability, it can maintain a favorable environment for precise devices such as sensitive devices, industry process devices, communication devices and computers. The cooling kit is provided as standard and it can precisely control the ambient temperature. The heater and humidifier are provided as options and they can precisely control the ambient humidity. If the AC unit is only available for cooling, the options are not needed.

Version code

1 DM E 07 M T 1: Standard; 2: High efficiency

Input power supply. M : 380V-3-ph-50Hz Cooling capacity. 07 : 7.5kW ; 12 : 12.5kW

Liebert_D

series air conditioner

E : indoor unit; C : outdoor unit; L : Lee-Temp outdoor unit

C

C: cooling only; O: with heater; H : with heater and humidifier

4 Chapter 2 Overview


The Liebert_DM AC provides a micro-processing controller that can automatically switch over to the required function (cooling or heating, dehumidifying or humidifying), based on the programmed setpoints and room ambient conditions. Each Liebert_DM AC consists of an indoor unit and an outdoor unit. Both units are installed on the floor separately.

Indoor unit

The Liebert_DM AC includes units with a cooling capacity of 7.5kW and 12.5kW, which are applicable to power supply of 380V, 3-ph. You can select them according to the actual equipment room conditions.

Outdoor unit

The outdoor unit adopts air cooled mode. It is classified into two models: standard model and Lee-Temp model. The Lee-Temp model can be used at lower temperature (see Table 1-1) than the standard model.

2.4 Main Components

2.4.1 Indoor Unit

The indoor unit consists of evaporator, compressor, fan, micro-processing controller, thermal expansion valve, strainer, filter, heater (optional), humidifier (optional) and surge protective devices (SPD, optional). For option introduction, refer to 2.5 Options.

Evaporator

Adopt a fin-tube heat exchanger with high efficiency. The distributor is designed and verified according to individual model to ensure that the refrigerant is distributed evenly in each loop, improving the efficiency of the heat exchanger to a great extent.

Compressor

Adopt a compressor with high efficiency ratio. It features low vibration, low noise and high reliability.

Fan

Adopt a centrifugal fan with high efficiency and high reliability. It features large airflow, long blowing distance, direct driving and easy maintenance.

Micro-processing controller

Provide a simple-operation user interface with multi-level password protection, self-recovery upon power failure, high-voltage & low-voltage protection, phase loss protection, automatic phase-sequence switching upon anti-phase and rotate speed control of the outdoor fan. The expert-level fault diagnose system can automatically display current fault information to facilitate equipment maintenance by maintenance personnel.

Thermal expansion valve

Adopt a thermal expansion valve with external equalizer type. It collects temperature and pressure signals at the same time to accurately regulate the refrigerant flow.

Strainer

Filtrate the impurities generated during long-term system operation and ensure normal system operation.

Filter

Adopt nylon filter material with big mesh for Liebert_DM AC. The filter features compact structure and easy maintenance. It can be washed repeatedly.

2.4.2 Outdoor Unit

The outdoor unit consists of fan and condenser. Other than the above components, the Lee-Temp model also includes a low-temperature unit.

Fan

Adopt axial flow blades with low noise. The single-phase motor with high performance is customized based on the power grid of base stations, so it can work over a wide voltage range with high reliability.

Chapter 2 Overview 5


Condenser

Adopt a fin-tube heat exchanger with high heat dissipation and wavy fins. It is free of dust accumulation, and can be easily cleaned and maintained.

Low-temperature unit

Make the AC unit operate in cooling mode normally at the lowest outdoor temperature of -34°C.

2.5 Options

2.5.1 Humidifier

The humidifier can add pure water vapor (up to 2.5kg/hour) into the room to control the indoor humidity within ranges required by devices and computer. The humidifier consists of a steam canister with automatic flushing control function, inlet tube, drain tube, solenoid valve and steam distributor.

Note 1. The electrode humidifier should be installed and tested in factory. 2. The Liebert_DM AC can control the ambient humidity only after a humidifier is installed.

2.5.2 Heater

A ceramic heater with positive temperature coefficient can be selected. It is safe and reliable. When the surface temperature is too high, it will reduce the heating power to avoid danger caused by over-temperature. A temperature switch is provided on the surface of the heater, and it will cut off the power of the heater when the surface temperature is too high. When the surface temperature decreases to normal, the temperature switch will restore the operation of the heater automatically.

2.5.3 Remote Monitor

The Liebert_DM AC communicates with the host computer through a configured RS485 port and receives the control of the host software. You can also select and configure a monitoring card to realize different monitoring functions. For the descriptions of the host monitoring software SiteMonitor developed by Emerson, refer to Appendix 3 SiteMonitor Software Introduction.

2.5.4 Energy-Saving Card

The Liebert_DM AC can monitor the maximum room temperature with the energy-saving card located outside the unit cabinet. The card is placed in position with high heat load and temperature. Up to four cards can be used for an AC unit. When the temperatures measured by all energy-saving cards are lower than the setpoint in ‘Sleep Mod’ and only indoor fan is running, if the ‘Sleep Mod’ is set to ‘ENAB’, the AC unit will turn off the indoor fan and enter the sleep mode for saving the energy.

2.5.5 Power SPD

The power SPD is used for second level (C level) lightning over-voltage protection of the AC power. It can be maintained easily and provides status indicating and alarm function.

Note The power SPD should be installed in factory.

6 Chapter 3 Technical Parameter


Chapter 3 Technical Parameter

This chapter expounds the technical parameter, mechanical parameter and operating environment of the indoor/outdoor unit of the Liebert_DM series AC.

3.1 Technical Parameter Of The Indoor Unit

Table 3-1 Technical parameter of DME07 series indoor unit

Type Model

DME07 MCT1

DME07 MOT1

DME07 MHT1

DME07 MCP1

DME07 MOP1

DME07 MHP1

Cooling capacity and sensible cooling capacity (kW)

24°CdB Cooling capacity

7500 7500 7500 7500 7500 7500

50%RH Sensible cooling capacity

6500 6500 6500 6500 6500 6500

Fan

Standard airflow (m3/h) 1800 1800 1800 1800 1800 1800 Number 1 1 1 1 1 1 Static pressure outside the fan (Pa)

0 0 0 0 0 0

Compressor Number 1 1 1 1 1 1

Evaporator coil Front face area (m2) 0.25 0.25 0.25 0.25 0.25 0.25 Face air velocity (m/s) 2 2 2 2 2 2

Electric heater Power (kW) - 3.2 3.2 - 3.2 3.2 Electrode humidifier

Humidifier water rate (kg/h)

- - 1.5 - - 1.5

Filter

Front filter size (mm, 1 pcs)

485 × 845 × 8

485 × 845 × 8

485 × 845 × 8

485 × 845 × 8

485 × 845 × 8

485 × 845 × 8

Side filter size (mm, 1 pcs)

312 × 317 × 8

312 × 317 × 8

312 × 317 × 8

312 × 317 × 8

312 × 317 × 8

312 × 317 × 8

Number 3 3 3 3 3 3

Port size

Liquid return pipe ID (mm)

9.52 9.52 9.52 9.52 9.52 9.52

Discharge pipe ID (mm) 12.7 12.7 12.7 12.7 12.7 12.7 Humidifier

- - 19 - - 19 Charging pipe OD (mm) Condensed water drain pipe OD (mm)

20 20 20 20 20 20

Net weight (kg) 90 92 95 90 92 95 Electrical parameter

Max. current (A) 6 8 20 6 8 20 Air breaker 32 32 32 32 32 32

Note: all the cooling capacity is nominal, ±5% error exists in the actual capacity

Table 3-2 Technical parameter of DME12 series indoor unit

Type Model

DME12 MCT1

DME12 MOT1

DME12 MHT1

DME12 MCP1

DME12 MOP1

DME12 MHP1

Cooling capacity and sensible cooling capacity (kW)

24°CdB Cooling capacity

12500 12500 12500 12500 12500 12500

50%RH Sensible cooling capacity

10200 10200 10200 10200 10200 10200

Fan

Standard airflow (m3/h) 2800 2800 2800 2800 2800 2800 Number 1 1 1 1 1 1 Static pressure outside the fan (Pa)

0 0 0 0 0 0

Chapter 3 Technical Parameter 7


Compressor Number 1 1 1 1 1 1

Evaporator coil Front face area (m2) 0.37 0.37 0.37 0.37 0.37 0.37 Face air velocity (m/s) 2.1 2.1 2.1 21 2.1 2.1

Electric heater Power (kW) - 3.2 3.2 - 3.2 3.2 Electrode humidifier

Humidifier water rate (kg/h)

- - 2.5 - - 2.5

Filter

Front filter size (mm, 1 pcs)

578 × 914 × 8

578 × 914 × 8

578 × 914 × 8

578 × 914 × 8

578 × 914 × 8

578 × 914 × 8

Side filter size (mm, 1 pcs)

376 × 427 × 8

376 × 427 × 8

376 × 427 × 8

376 × 427 × 8

376 × 427 × 8

376 × 427 × 8

Number 3 3 3 3 3 3

Port size

Liquid return pipe ID (mm)

12.7 12.7 12.7 12.7 12.7 12.7

Discharge pipe ID (mm) 16 16 16 16 16 16 Humidifier

- - 19 - - 19 Charging pipe OD (mm) Condensed water drain pipe OD (mm)

20 20 20 20 20 20

Net weight (kg) 140 142 145 140 142 145 Electrical parameter

Max. current (A) 10.5 10.5 22 10.5 10.5 22 Air breaker 32 32 32 32 32 32

Note: all the cooling capacity is nominal, ±5% error exists in the actual capacity

3.2 Technical Parameter Of The Outdoor Unit Table 3-3 Technical parameter of the standard outdoor unit

Item Model

DMC07WT1 DMC12WT1 Airflow (CMH) 3800 7300 Condenser coil CSA (m2) 0.73 1.1 Number of the condenser coil row 2 2 Motor power (W) 170 340 Operating temperature range (°C) -15°C ~ +45°C -15°C ~ +45°C Refrigerant charge quantity (g) 500 1000 Size of the liquid pipe (mm) 9.52 12.7 Size of the discharge pipe (mm) 12.7 16

Table 3-4 Technical parameter of the Lee-Temp outdoor unit

Item Model

DML07W1 DML12W1 Airflow (CMH) 3800 7300 Condenser coil CSA (m2) 0.49 0.98 Number of the condenser coil row 2 2 Motor power (W) 150 300 Operating temperature range (°C) -34°C ~ +45°C -34°C ~ +45°C Refrigerant charge quantity (g) 4870 7150 Size of the liquid pipe (mm) 9.52 12.7 Size of the discharge pipe (mm) 12.7 16

3.3 Mechanical Parameter

3.3.1 Indoor Unit

The mechanical parameters of the indoor unit are listed in Figure 3-1 and Table 3-6.

8 Chapter 3 Technical Parameter


DME07kW DME12kW

Figure 3-1 Dimensions of the indoor unit (unit: mm)

The shadows in Figure 3-1 indicate a reasonable installation and service space. For 7.5kW units, 510mm must be reserved to facilitate maintenance; For 12.5kW unit, 600mm must be reserved to facilitate maintenance. The AC unit equipped with a heater should be kept a distance of minimum 150mm from combustible substance. When testing the AC unit, keep the external static pressure below 150Pa lest the air volume becomes too low and the heater becomes too hot.

3.4 Outdoor Unit

The mechanical parameters of the outdoor unit are shown in Figure 3-2, Figure 3-3 and Table 3-6.

Figure 3-2 Dimensions of standard outdoor unit (unit: mm)

510 385

1750

510510

600 500

1850

600

600

352 787

829

1240

352 787

Chapter 3 Technical Parameter 9


Figure 3-3 Dimensions of Lee-Temp outdoor unit (unit: mm)

Table 3-5 Mechanical parameters of indoor unit and outdoor unit

Model Cooling capacity (kW) Dimensions (W × D × H, mm) Net weight (kg)

Indoor unit DME07*** 7.5 510 × 385 × 1750 90 DME12*** 12.5 600 × 500 × 1850 145

Outdoor unit

DMC07WT1 - 787 × 352 × 829 40 DMC12WT1 - 787 × 352 × 1240 60 DML07W1 - 1037 × 352 × 829 53 DML12W1 - 1037 × 352 × 1240 95

3.5 Operation Environment

The operation environment requirements are listed in Table 3-7.

Table 3-6 Operation environment requirements

Item Requirements

Installation position The maximum equivalent horizontal distance between the indoor unit and outdoor unit[1]: 50m; Vertical distance ΔH[2]: -5m ≤ ΔH ≤ 20m

Installation mode Indoor unit: vertical mode; mounting base ≥ 150mm; outdoor unit: horizontal airflow mode

Ambient temperature Indoor: 0°C ~ 40°C Outdoor: standard model, -15°C ~ +45°C; Lee-Temp model, -34°C ~ +45°C

Ambient humidity 30%RH ~ 80%RH Protection level Outdoor unit: IPX4 Altitude < 1000m. Derating is required when the altitude exceeds 1000m Operation voltage range 380V (-15% ~ +15%), settable according to different environments, the error is 3% Note: [1]: The value is positive if the outdoor unit is installed above the indoor unit; negative if the indoor unit is installed above the outdoor unit. [2]: ΔH = Altitude of the outdoor unit - Altitude of the indoor unit [3]:Total transportation and storage time should not exceed six months. Otherwise, the performance needs to be re-calibrated

352 1037

575

1240

352 1037

575

829

10 Chapter 4 Application Guidline


Chapter 4 Application Guidline

This chapter mainly introduces the general arrangement, general principle, piping, model configuration and cooling cycle.

4.1 General Arrangement

The general system arrangement diagram is shown in Figure 4-1. The standard pipe sizes are shown in Table 4-1.

Figure 4-1 General arrangement diagram

Note 1. : Factory piping. 2. : Field piping (by technicians). 3. *: Check valve and traps are optional and not supplied by Emerson. But they are recommended for normal system operation and easy maintenance. They should be installed on site by technicians. 4. +: Solenoid valve is a part of extended piping kit.

Table 4-1 Standard pipe sizes

Actual cooling capacity Pipe length (m) Discharge pipe OD Liquid pipe OD

Liebert_DM series 7.5kW unit 5 1/2” (12mm) 3/8” (10mm)

12.5kW unit 5 5/8” (16mm) 1/2” (12mm)

4.2 General Principles

1. Use copper pipes with quick thread connector to connect the indoor unit and the outdoor unit. If the pipe length exceeds the standard pipe length (see Table 4-1) and straight copper pipe is used, piping joints must be brazed. 2. Follow standard industry procedures in selection and placement of pipe, system evacuation and charging with refrigerant (only when pipeline is too long). The standard refrigerant of the AC unit is R22. 3. Give considerations to pipeline pressure drop, oil return to the compressor, to avoid oil leakage and clogging in parts of the system and minimize noise and vibration to the greatest extend. 4. Consult Emerson before installation on whether measures such as using extended piping kit are needed, if the equivalent length exceeds 50m, or if the vertical distance between the indoor unit and the outdoor unit exceeds the values in Table 4-2.

Chapter 4 Application Guidline 11


Table 4-2 Vertical distance between indoor unit and outdoor unit

Relative position Value Outdoor unit installed higher than indoor unit Maximum: 20m Outdoor unit installed lower than indoor unit Maximum: 5m

5. The equivalent length of each part is given in Table 4-3. The resistance loss caused by elbows and valves has been taken into consideration. The installer should confirm if these values are appropriate for site conditions.

Table 4-3 Equivalent length of each part

Liquid pipe OD (inch) Equivalent length (m)

90° elbow 45° elbow T-type three way 3/8 0.21 0.10 0.76 1/2 0.24 0.12 0.76 5/8 0.27 0.15 0.76 3/4 0.3 0.18 0.76 7/8 0.44 0.24 1.1

1-1/8 0.56 0.3 1.4

4.3 Piping

All equipment must be installed vertically. The Liebert_DM AC is available in two installation modes: outdoor unit installed higher than indoor unit and indoor unit installed higher than outdoor unit. See Figure 4-2 and Figure 4-3 for details.

Figure 4-2 Outdoor unit above indoor unit

Outdoor unit

Floor

Isolataionfloor

Max

. 20m

1:200

7.5m

1:200

Insulationmaterial

Trap

Liquid pipe (not be exposed to sun)

Sealed

Protectiontube

Discharge pipe (slope)

Indoor unit

Condensation waterdrain pipe (to outdoor)

Humidifier canister watersupply pipe (to water tap)

12 Chapter 4 Application Guidline


Figure 4-3 Indoor unit above outdoor unit

4.4 Model Configuration Table 4-4 Configuration of the indoor unit and the outdoor unit

Main power Cooling capacity

Indoor unit Outdoor unit

Single cooling With electric

heating With humidifying

and heating Standard

model Lee-Temp

model

380V/3P/50Hz 7.5kW DME07MCT(P)1 DME07MOT(P)1 DME07MHT(P)1 DMC07WT1 DML07W1

12.5kW DME12MCT(P)1 DME12MOT(P)1 DME12MHT(P)1 DMC12WT1 DML12W1

4.5 Cooling Circulation

As shown in Figure 4-4, the compressor (1) presses the high-temperature gaseous refrigerant into the air-cooled condenser (2). The refrigerant is condensed as fluid in the condenser and sent to the evaporator (4) after being throttled by the thermostatic expansion valve (3). In the evaporator (4), the refrigerant performs heat exchange with the indoor air that is driven and circulated by the indoor fan (5) and then evaporates. The refrigerant is sent back to the compressor (1) to start a new circulation. The system adjusts the rotation speed of the outdoor fan (6) to retain the discharge pressure normal. The compressor (1) is configured with a crankcase heating strip to prevent the refrigerant from flowing back from the condenser in summer. This can protect the compressor from liquid strike during startup.

Figure 4-4 Schematic diagram of the system

Min

. 5m

1:200

Outdoor unit

Indoor unit

Sealed

Protection tube

Isolation floor

Discharge pipe (slope)

1:200

Condensation waterdrain pipe (to outdoor)

FloorInsulationmaterial

Liquid pipe (not beexposed to sun)

Humidifier canister watersupply pipe (to water tap)

Chapter 5 Micro-Processing Controller 13


Chapter 5 Micro-Processing controller

This chapter gives a detailed description on appearance, LCD screen, control buttons, control screen, control logic, alarm function of the micro-processing controller of the Liebert_DM AC.

5.1 Appearance

The micro-processing controller panel is shown in Figure 5-1.

Figure 5-1 Micro-processing controller panel

5.2 LCD Screen

The LCD screen displays English menus with white backlight. When the system is operating normally, it displays the current temperature & humidity (whether to display humidity is optional. Only the unit configured with a humidifier can display humidity), unit output status (cooling, heating, dehumidifying and humidifying), unit status (single, host, standby), unit operation status (running, standby, locked), alarm information and current date & time, as shown in Figure 5-2.

Figure 5-2 LCD screen

More detailed operating status of certain component and alarm information are available from the Main Menu screen. The selected menu item will be highlighted while browsing. The digit to be changed will be highlighted while you are changing setting.

5.3 Control Buttons

5.3.1 Function Description

The micro-processing controller provides five control buttons, as shown in Figure 5-3.

Figure 5-3 Control keypad

The functions of the control buttons are described in Table 5-1.

Table 5-1 Function descriptions of control buttons

Control button Function descriptions

21 C Heat SIG50%rh Hum RUNHigh Hum 1/42012/01/01 00:00

°

ON/OFF button

Enter button

Esc buttonDown button

Up button

14 Chapter 5 Micro-Processing Controller


ON/OFF button Press this button for 3s to turn on or off the unit Enter button (ENT) Enter the selected menu screen. Validate the parameter setting value

Esc button (ESC) Exit the current menu and return to the Normal screen or previous menu screen. Abort parameter change; silence the audible alarm

Up button Move the cursor up or increase the parameter value. For a toggle selection: scroll through the options. For a multi-screen menu: scroll up the screen

Down button Move the cursor down or decrease the parameter value. For a toggle selection: scroll through the options. For a multi-screen menu: scroll down the screen

5.3.2 Operation Example

Example 1: Inputting password to enter the Main Menu

After the unit is started up, you can enter the Main Menu through conducting the following operations on the Normal screen. 1. Press the Enter button to enter the Password screen. 2. Press the Enter button to highlight the input data field in the Password screen. 3. Press the Up or Down button to change the current password number. 4. Press the Enter button to confirm the password and enter the Main Menu screen.

Example 2: changing parameters

Taking Hi Temp in Alarm Output screen as an example, the procedures are as follows: 1. Press the Up or Down button to move the cursor on the Alarm Menu in the Main Menu screen. 2. Press the Enter button to enter the Alarm Menu. 3. Press the Up or Down button to move the cursor on Alarm Output in the Alarm Menu screen. 4. Press the Enter button to enter the Alarm Output screen. 5. Press the Up or Down button to move the cursor on Hi Temp. 6. Press the Enter button to highlight the parameter field of Hi Temp. 7. Press the Up or Down button to select the parameter option. 8. After selecting, press the Enter button to confirm. The parameter will take effect. 9. Press the Esc button to return to the previous menu screen.

Note After changing the parameter, if you do not press the Enter button to validate the changed parameter, the change will be invalid.

5.4 Control Screen

5.4.1 ON Screen

After the AC unit is powered on, the LCD screen will display the ON screen, as shown in Figure 5-4.

Figure 5-4 ON screen

5.4.2 Normal Screen

After the AC unit is powered on, the Normal screen will be displayed after 10 seconds (default) for heat startup delay or through pressing the Enter button directly, as shown in Figure 5-5. The Normal screen displays the following information: the current temperature and humidity, unit operation state (cooling, heating, dehumidifying, humidifying), unit mode (single, host, standby), unit operation status (running, standby, locked, off, sleep), alarm information and current date & time.

ConnectingPlease wait...



Figure 5-5 Normal screen

5.4.3 Password Screen

Press the Enter button on the Normal screen, and the Password screen will appear, as shown in Figure 5-6.

Figure 5-6 Password screen

Three levels of passwords are provided for accessing the menus. The detailed descriptions are listed in Table 5-2.

Table 5-2 Password level

Password level User Initial password Remark

Level 1 General operator 0001 Browse all menu information. Only set temperature and humidity setpoints (see Figure 5-12) and cannot change any values and settings

Level 2 Maintenance personnel - Set all parameters Level 3 Factory technician - -

For detailed operation on entering the password, refer to 5.3.2 Operation Example. If entering a wrong password, you can only view the menu, but cannot change the settings. In this case, you can press the Esc button to return to the Normal screen, and then press the Enter button to enter the Password screen again.

Note If pressing the Enter button in the Password screen instead of inputting any password, you can only view the menu settings but cannot change any parameters.

5.5 Control Logic

5.5.1 Cooling logic

When the actual temperature = set temperature + temperature precision value, the cooling requirement reaches 100%. When the actual temperature = set temperature, the cooling requirement is 0%. When the actual temperature rises to the degree corresponding to the 100% cooling requirement, cooling starts; when the actual temperature drops to the degree corresponding to the 0% cooling requirement, cooling stops (the compressor is turned off). Figure 5-7 shows the cooling logic diagram.

21 C Heat SIG50%rh Hum RUNNo alarm 02012/01/01 00:00

°

Password: 1***



Figure 5-7 Cooling logic

5.5.2 Heating Logic

When the actual temperature = set temperature - temperature precision value, the heating requirement reaches 100%. When the actual temperature = set temperature, the heating requirement is 0%. When the actual temperature drops to the degree corresponding to the 100% heating requirement, heating starts; when the actual temperature rises to the degree corresponding to the 0% heating requirement, heating stops (the electronic heater is turned off). Figure 5-8 shows the heating logic diagram.

Figure 5-8 Heating logic

5.5.3 Dehumidifying Logic

1. Relative humidity control logic

Dehumidifying is activated when the cooling requirement is smaller than 125% and the dehumidifying requirement is larger than 100%. Dehumidifying is deactivated when the dehumidification requirement is no larger than 50%. Figure 5-9 shows the dehumidifying activation and deactivation requirements.

Figure 5-9 Dehumidifying activation and deactivation requirements

Set point0% +100%

Indoor temperature

The compressor is turned off

The compressor is turned on

Set point-100% 0% Indoor temperature

Electric heater is turned off Electric heater

is turned on

Set point+100%

Indoor humidity

Enter dehumidifying mode

Exit dehumidify-

ing mode

+50%



In the dehumidifying mode, the fan switches to high gear immediately when the cooling requirement is larger than 125%. The fan switches back to low gear when the temperature drops normal. Figure 5-10 shows the high/low gear switch diagram of the fan in the dehumidifying mode.

Figure 5-10 High/low gear switch diagram of the fan in the dehumidifying mode

In the temperature compensation mode, the compressor is turned on when the cooling requirement is larger than 0% and it is turned off when the cooling requirement is smaller than -100%; the electronic heater is turned on when the cooling requirement is smaller than 0% and it is turned off when the cooling requirement is larger than 25%. Figure 5-11 shows the control logic of the compressor in a) and the control logic of the electronic heater in b).

a) Control logic of the compressor b) Control logic of the electronic heater

Figure 5-11 Dehumidification logic in the temperature compensation mode

In the non-temperature compensation mode, the compressor is turned on and the electronic heater is turned off when the cooling requirement is no smaller than 0%; the compressor is turned off and the electronic heater is turned on when the cooling requirement is smaller than -100%. Figure 5-12 shows the control logic of the compressor in a) and the control logic of the electronic heater in b).

a) Control logic of the compressor b) Control logic of the electronic heater

Figure 5-12 Dehumidifying logic in the non-temperature compensation mode

2. Absolute Humidity Control Logic

If absolute humidity control logic is used, users should calculate the absolute humidity based on the actual temperature and humidity and perform humidity control by referring to 1. Relative humidity control logic in this section.

Set point +125%

Indoor temperature

Switch to high gearSwitch to low gear

Set point-100% Indoor temperature



Set point Indoor temperature

The electric heater is turned on

+25%

The electric heater is turned off





The electric heater is

turned on

The electric heater is turned off



5.5.4 Humidifying Logic

1. Relative humidity control logic

When the actual humidity = set humidity - humidity precision value, the humidification requirement reaches 100%. When the actual humidity = set humidity, the humidification requirement is 00%. When the actual humidity drops to the value corresponding to the 100% humidification requirement, humidification starts; when the actual humidity rises to the value corresponding to the 0% humidification requirement, humidification stops. Figure 5-13 shows the humidification logic diagram.

Figure 5-13 Humidification logic

2. Absolute humidity control logic

If absolute humidity control logic is used, users should calculate the absolute humidity based on the actual temperature and humidity and perform humidity control by referring to 1. Relative humidity control logic in this section.

5.5.5 Outdoor Fan Control

1. If the pressure sensor is faulty, the fan operates at full speed. 2. If frequency deviation happens, the fan stops operating. 3. If the compressor is supplied with power and the pressure in the condenser meets requirements for starting the fan, the fan starts. 4. If the compressor is supplied with power and the pressure in the condenser meets requirements for stopping the fan, the fan stops. Alternatively, if the compressor is stopped for more than one minute, the fan stops. 5. Figure 5-14 shows the voltage control curve during fan operating, which is on the basis of FSC1P control curve.

Figure 5-14 FSC1P control curve

During fan startup, the voltage is obtained based on the pressure-voltage curve if the pressure is kept within the set range and the voltage is the value of MaxV if the pressure exceeds the set range. During fan operating, the power system stops supplying power to the fan if the condensation pressure is smaller than (Pset - 1), namely Poff. The


The humidifier is

turned on

0%

The humidifier is

turned off

V

P

Pband

Pset

MinV

100% Vin

MaxV

100% output

Condensation pressure point

L1

L2

A

BC

E

D

F

G H

I Px Pmaxv Poff Pv100

Vx

Pv100 = (Pset + Pband + 5)



control process is A -> B -> C -> D -> E -> F -> C -> B -> A -> G -> H -> I (point A corresponds to the pressure ranging from B to G). In the case of 100% voltage output, the voltage restores to MaxV after the pressure drops by 2 bars to the point of Pmaxv. Table 5-3 lists the voltage and pressure parameters.

Table 5-3 Voltage and pressure setting table

Parameter Lower limit Upper limit Default Min. power supply voltage (%) 30 50 30 Max. power supply voltage (%) 60 100 100

Start pressure (Bar) 11 15 13 Pressure bandwidth (Bar) 4 6 5

5.5.6 Economy Mode Control

1. The AC units enter the Economy mode after this mode is enabled. 2. When the system starts to operate in this mode, the temperature control precision is added with the precision amplification value. When the system exits this mode, the normal precision value recovers. Table 5-4 lists the parameter setting in the Economy mode.

Table 5-4 Parameter setting in the Economy mode

Parameter Default value Lower limit Upper limit Economy mode OFF (0) OFF (0) ON (1)

Start At 22: 00 18: 00 3: 00 Start At 7: 00 5: 00 10: 00

Zoom (°C) 2 2 10

5.5.7 Sleep Mode Control

1. The AC units enter the Sleep mode when there is one energy-saving card or more. 2. In this mode, the fan stops operating when the following conditions are met: 1) All the other moving parts do not need to operate except for the indoor fan. 2) The temperature of all energy-saving cards (four at most) is lower than the sleep temperature. 3) The energy-saving cards are kept in the temperature for 600 seconds. 3. The AC units exit the Sleep mode when either of the following conditions is met: 1) The temperature of an energy-saving card exceeds the value of sleep temperature plus 2 and the energy-saving card is kept in the temperature for 30 seconds. 2) No energy-saving card is available. Table 5-5 lists the parameter setting in the Sleep mode.

Table 5-5 Parameter setting in the Sleep mode

Parameter Default value Lower limit Upper limit EngySave Cd Num 0 0 4

Sleep At 27°C 15 40

5.5.8 Host/Standby Unit Control

1. The host unit automatically switches as a standby unit after a rotate cycle ends. 2. The host unit switches as a standby unit and the standby unit switches as an host unit after a fault occurs in the host unit or standby unit, such as high pressure locking, low pressure locking, or discharge locking. 3. The standby unit works as a host unit after a high temperature alarm is generated by the host unit. Table 5-6 lists the parameter setting for host/standby unit control.

Table 5-6 Parameter setting for host/standby unit control

Parameter Lower limit Upper limit Default Remark Unit Status 0 2 0 0: SIG; 1: HST; 2: Standby Switch Mod 0 1 0 0: Standby; 1: Rotate

Rt Time By day (1, 2, 3, 4, 5, 6, and 7) 1 The number indicates the interval days

between two polling cycles.



Rt At 0: 00 23: 00 12: 00 -

5.6 Alarm Function

5.6.1 Alarm Category

Alarms fall into the following categories: high pressure alarm, low pressure alarm, discharge temperature alarm, high temperature alarm, low temperature alarm, high humidity alarm, low humidity alarm, humidifier fault, fault of return air temperature sensor, high pressure locking, low pressure locking, discharge temperature locking, floor wetting, power loss, over-voltage alarm, under-voltage alarm, frequency deviation, loss phase alarm, negative phase alarm, custom alarm 1 (lightning protection), energy-saving card fault, air flow loss, pressure sensor fault, humidity sensor fault, air flow sensor fault, and custom alarm 2.

5.6.2 Alarm State And History

1. Alarm state recording 1) Alarms are recorded based on alarm occurrence time. 2) Both the alarm category and alarm time are recorded. 3) Alarm states are cleared upon power failure. 2. Alarm history recording 1) Historical alarms are recorded based on alarm occurrence time. 2) A maximum of 200 historical alarms are recorded. 3) A historical alarm includes the alarm SN., alarm category, alarm time, and alarm clearance time. 4) Historical alarms are saved upon power failure. 5) Historical alarms can be manually cleared. 6) Two-level password protection is enabled for historical alarms.

5.6.3 Alarm Prerequisites And Handling Methods

Table 5-7 Alarm prerequisites and handling methods

No. Alarm Alarm Prerequisite Alarm Mode Clearance Method

Alarm reporting

delay (unit: second)

Alarm Output

1 High pressure alarm

The high pressure switch is kept open-circuited for a duration of alarm reporting delay

The alarm is triggered and the compressor is forcibly closed

Keep the high pressure switch turned off for a duration of alarm reporting delay

3 Enabled/ disabled

2 Low pressure alarm

The low pressure switch is kept open-circuited for a duration of alarm reporting delay in the case of compressor operating. The state of the low pressure switch is ignored for 180 seconds. The duration is configurable, ranging from 30 seconds to 600 seconds


Keep the low pressure switch turned off for a duration of alarm reporting delay

30 Enabled/ disabled

3 Discharge temperature alarm

The discharge temperature switch is kept turned off for a duration of alarm reporting delay in the case of compressor operating


Keep the discharge temperature switch turned off for a duration of alarm reporting delay

3 Enabled/ disabled

4 High temperature alarm

The fan is enabled for 10 minutes and the return air temperature is kept higher

The alarm is triggered and the electronic

Keep the return air temperature lower than the value (current

30 Enabled/ disabled/ closed




Alarm reporting


Alarm Output

than the high temperature threshold for a duration of alarm reporting delay while the return air temperature sensor operates normally

heater is closed

high temperature threshold - 2°C) for a duration of alarm reporting delay

5 Low temperature alarm

The fan is enabled for 10 minutes and the return air temperature is kept lower than the low temperature threshold for a duration of alarm reporting delay while the return air temperature sensor operates normally

The alarm is triggered and the cooling system is closed

Keep the return air temperature higher than the value (current low temperature threshold + 2°C) for a duration of alarm reporting delay

30 Enabled/d isabled/ closed

6 High humidity alarm

The fan is enabled for 10 minutes and the return air humidity is kept higher than the high humidity threshold for a duration of alarm reporting delay while the return air humidity sensor operates normally

The alarm is triggered and humidification stops

Keep the return air humidity lower than the value (current high humidity threshold - 2%) for a duration of alarm reporting delay


7 Low humidity alarm

The fan is enabled for 10 minutes and the return air humidity is kept lower than the low humidity threshold for a duration of alarm reporting delay while the return air humidity sensor operates normally

The alarm is triggered and dehumidification stops

Keep the return air humidity higher than the value (current low humidity threshold + 2%) for a duration of alarm reporting delay


8 Humidifier fault

The humidifier switch is kept turned off for a duration of alarm reporting delay

The alarm is triggered

Keep the humidifier switch turned off for a duration of alarm reporting delay


9

Fault of the return air temperature sensor

The return air temperature is kept out of the allowed range for a duration of alarm reporting delay

The alarm is triggered and the cooling system is forcibly started

Keep the return air temperature within the allowed range for a duration of alarm reporting delay


10 High pressure locking

The high pressure alarm is reported for three times within an hour or the alarm is kept uncleared within 10 minutes

The alarm is triggered and the compressor is locked

Manually clear the alarm

/ Enabled/ disabled

11 Low pressure locking

The low pressure alarm is reported for three times within an hour or the alarm is kept uncleared within 10 minutes



/ Enabled/ disabled

12 Discharge temperature locking

The discharge temperature alarm is reported for three times within an hour or the alarm is kept uncleared for 20 minutes



/ Enabled/ disabled

13 Floor wetting alarm

The floor wetting switch is kept turned off for a duration of alarm reporting delay

The alarm is triggered and humidification stops

Keep the floor wetting switch turned off for a duration of alarm reporting delay





Alarm reporting


Alarm Output

14 Power loss Power loss occurs when the AC units are in operation


The alarm is automatically cleared one second later

/ Enabled/ disabled/ closed

15 Over-voltage alarm

The input voltage increases by 15%

The alarm is triggered and the system is locked

Restore the input voltage


16 Under-voltage alarm

The input voltage decreases by 15%


Restore the input voltage


17 Frequency deviation

The input frequency is deviated by 5Hz


Restore the frequency 3 Enabled/ disabled/ closed

18 Open phase alarm

Open phase occurs


Manual restoration 3 Enabled/ disabled/ closed

19 Negative phase alarm

Negative phase occurs


Manual restoration / Enabled/ disabled/ closed

20

Custom alarm 1 (lightning protection)

The set polarities are kept inconsistent with those input for a duration of alarm reporting delay


Keep the set polarities consistent with those input for a duration of alarm reporting delay


21 Energy saving card fault

The number of normally online energy-saving cards is less than the set number or more than one energy-saving card exceed the allowed temperature range

The alarm is triggered and the dormancy mode cannot be activated if all energy-saving cards are faulty

Keep the number of the cards consistent with the set number and keep the cards in normal temperature


22 Air flow loss

The value (temperature measured by using the sensor NTC0 - return air temperature) is kept larger than the set temperature for a duration of alarm reporting delay when the fan is in normal operation. The air flow detection thermal resistor output is closed when the fan is shut down. This alarm is not reported if the fan is closed and the temperature sensor is faulty

The alarm is triggered and shut down all the devices except for the fan

Keep the value (temperature measured by using the sensor NTC0 - return air temperature) smaller than the value (set temperature - 2°C)

10 Enabled/ disabled

23

Fault of pressure sensor 1 （lightning protection）

The condensing pressure is kept out of the allowed range for a duration of alarm reporting delay


Keep the condensing pressure within the allowed range for a duration of alarm reporting delay

3 Enabled/ disabled

24 Humidity The return air humidity is The alarm is Keep the return air 10 Enabled/




Alarm reporting


Alarm Output

sensor fault kept out of the allowed range for a duration of alarm reporting delay

triggered humidity within the allowed range for a duration of alarm reporting delay

disabled/ closed

25 Air flow sensor fault

The temperature measured by using the air flow loss sensor (NTC0) is kept out of the allowed range for a duration of alarm reporting delay


Keep the temperature measured by using the air flow loss sensor (NTC0) within the allowed range for a duration of alarm reporting delay


Note: 1. Alarm reporting delay is a fixed configuration. 2. In the case of system locking, the compressor, heater, humidifier, and outdoor fan are locked.

5.7 Other Functions

5.7.1 Real-Time Clock

1. Set and display the system date and time. 2. This function provides the accurate time of data recording.

5.7.2 Operating Record

1. Device startup and stop record A maximum of 50 records about device startup and stop are recorded, including the fan, compressor, electronic heater, and humidifier. 2. Operating time record The operating time of the fan, compressor, electronic heater, and humidifier is recorded by hour.

5.7.3 Parameter Protection

1. All parameters that need to be protected are saved in the internal EEPROM. 2. Default parameter settings can be restored. 3. Two-level password protection is enabled.

5.7.4 Password Protection

1. A password consists of four digits, ranging from 0000 to 9999. Password protection is classified into three levels. 2. Level 1 password is available for ordinary users. They can modify password protection parameters and level 1 password. 3. Level 2 password is available for operators. They can modify password protection parameters and level 1 and level 2 password. 4. Level 3 password is available for maintenance personnel. Except for level 3 password, they can modify password parameters and level 1 and level 2 password.

5.7.5 Shutdown Mode

1. Shutdown modes fall into local shutdown, monitor shutdown, and remote shutdown. 2. Local shutdown is implemented by pressing the on/off button on the display panel. 3. Monitor shutdown is implemented through the background monitor RS485-1. 4. Remote shutdown has the highest priority and is in serial relationship with the other shutdown modes.



5.7.6 Diagnosis Output

1. In the diagnosis mode, devices such as the primary fan, compressor, electronic heater, and humidifier can be tested. 2. A tested device can be automatically or manually shut down when it diagnoses another load. 3. If a device is not manually shut down within an hour, the device automatically exits the manual shutdown mode. 4. The fan must be always in operation. If the fan stops operating, the other devices are forcibly shut down. The system must be protected in the case of major alarms, such as air flow loss, high pressure alarm, low pressure alarm, discharge alarm and locking, and power fault.

5.7.7 Sensor Calibration

1. The temperature calibration range is ±5°C. 2. The humidity calibration range is ±10%.

5.7.8 Deployment Management

Deployment management is required during initial system operating.

Appendix 1 Menu Structure 25


Appendix 1 Menu Structure

Figure 1 Menu structure

Main Menu

Help Menu

Enab Open

Version Info

System Menu

OutdoorUnit

SetupSystem

SelectOptions

CostSave Mod

Heat Num

Hum Num

Mntr Prtcl

Press BdWdth

Out Volt

Min. Volt

Max. Volt

Over Press

Under Press

Pwr Freq Devia

Mntr Addr

Baut Rate

Run Time

In/Out Status In Fan SS Record

Hum SS RecordOut Fan SSRecord

Heat SS Record

Comp SS Record

Time/Date

Analog

Alarm Menu

AlarmStatusAlarmHistory

System Status

AlarmSetpoint

Set Points

Hi Hum

Lo Hum

Lo Temp

Hi Temp

Hum Sens

Temp Sens

Temp Stpt

Hum Stpt

Air Loss

SS Record

Start Press

EngySave Cd Num

Unit Mode

Switch Mod

Change Password

LCD Setting

Language

ContrastNTC0 Calib

Hum Calib

Temp Calib

Factory Reset

Appendix 2 Wiring Diagram 26


Appendix 2 Wiring Diagram

Figure 2 DME07 model

42 6

3

4

1

2

A1

A2

5

6

21

22

31 5PE N

Compr-essor

Control board J28

J21

3 4 5 6 7 8

1 2

Transformer T1

High pressure switch

21

21

Indoor connection terminal TB1

21

3

Electric heater

Indoor fan

Start capacitorElectric heater belt of the compressor

1211

13

Power board

Filter board

L1 L2 L3NPower SPD

SPD/DALARMCOM NC

3

4

1

2KM1 3 4 5 6 7 821

3 4 5 6 7 821

54

1514

678

161718

12

12

1

345

2 J13 J31

J1

J3

J02

J01

J03J29

J30

J18

1

345

2

6

8910

7

1

345

2

6

87

1

345

2

6

87

J19

J12

J39

2121

4

21

3 J4Display board

12

Grounding point of the electrical

control box

Air discharging switch

Floor overflow3 2 1J23

J34

J14 21

Standby unit requestJ36

GND+12V

CANHCANL

Temp/Hum detection board

Energy-saving card

Pressure sensor

45

J22 1

Connection description:1. This diagram is only for 7.5kW model.2. There is no electric heater contactor KM2, electric heater and the corresponding cables in the single cooling unit. 3. There are transformer T2 and connection terminal TB2 Only when the heating function is select; The single cooling model is not equipped with transformer T2 and connection terminal TB2.4. The energy-saving card and the monitoring card are options; If you need them, field connection is essential.5. The power SPD is equipped with T version unit; P version unit does not have power SPD and corresponding cables, J19-1 and J19-2 of the control board is shorted using cable.

Factory supplied lineField supplied lineParts supplied line

Cable description:

Outdoor connection

terminal

NL L1

N1Indoor

connection terminal

Grounding point of the electrical control box

Grounding point of the electrical

control box

Connection cables between indoor and outdoor connection terminal

GND12V

AB

GND12VAB

Inserted terminals

Yel

low

-gre

en

9 19

5

6

13

14

A1

A2

Transformer T2

FuseBlack Yellow

Red

21Indoor connection terminals TB2

QF-

1

QF-

3

QF-

5

NPE

SP

D-1

SP

D-2

SP

D-3

SP

D-N

KM

1-1

KM

1-3

KM

1-5

KM

1-21

KM

1-2

KM

1-4

KM

1 -6

T1 T2 T 3

KM

2 -1

KM

2-3

TB1-NTB1-1

TB1-3TB1-4TB1-5

TB1-2

TB1-NTB1-NTB1-11

TB1-13

TB1-15

J01-

1

J01-

3

J01-

5

J01-

7

TB2-

21TB

2-22

KM

2 -A

1J 2

8-4

J2-2

J2-1

J18-1J18-2J18-3

J02

J03

J1-NJ1-L

J28-3J28-4

KM2-A2TB2-22

J19-8J19-7

J19-2J19-1

GN

DV

IN+5

V

Remote turn on/off J19-6J19-5

Power MCB

Bla

ck

Gray

23 1

Black

J3-4

PE

NNN

NNN

N N

J28-7J28-8J28-9J28-10

Standby unit is available

Public alarm

TB1-7TB1-8TB1-9

TB1-10

PE1

J3-2

J3-1

Black

J21-5J21-6

KM

1-22

TB1-N

1020

Monitoring cardDB9

J14-1J14-2


Yellow-green

J28-

3TB

2-21

KM2

TB1-7TB1-8TB1-9TB1-10

J28-7J28-8J28-9

J28-10

PE1L1N1

To outdoor unit

380V/50Hz 3N~

Bla

ck

N1 L1

J3-1

J3-2

KM1-A1

J3-4

J18-

3

KM1-A2

SPD-NCSPD-COM

J19-

1J1

9-2

222423

Bla

ck Bla

ck

Bla

ck

Bla

ck

Bla

ck

Yel

low

-gre

en

Bla

ckB

lack

Bla

ckB

lack

Bla

ckB

lack

Bla

ckB

lack

Bla

ckB

row

n

Gra

y

Gray

Black

BlackBlackBlackBlack

BlackBlackBlueBlueBlackBrown

Gre

enR

ed

Blu

e

Blu

e

Bro

wn

Bro

wn

Bla

ckB

lack

Yel

low

-gre

en

Bro

wn

Bro

wn

Bla

ck

Whi

te

BlackBlack

BlackBlack

Bla

ck

Bla

ck

Bla

ck

Bla

ck

Yellow

FuseBlack Yellow

Black Yellow

Low pressure switch

Appendix 2 Wiring Diagram 27


Figure 3 DME12 model

42 6

3

4

1

2

A1

A2

5

6

21

22

31 5 Power MCBPE N

Comp-ressor

Control board

J28

J21

3 4 5 6 7 8

1 2

Transformer T1

Fuse

High pressure switch

Low pressure switch

21

21

21

3

Electric heater

Indoor fan

Start capacitanceElectric heater belt of the compressor

1211

13

Power board

Filter board

L1 L2 L3NPower SPD

SPD/DALARM

COM NC

3

4

1

2KM1

3 4 5 6 7 821

3 4 5 6 7 821

54

61516

789

171819

12

12

1

345

2 J13 J31

J1

J3

J02J01

J03J29

J30

J18

1

345

2

6

89

10

7

1

345

2

6

87

1

345

2

6

87

J19

J12

J39

2121

4

21

3 J4Display board

12


Air discharging switch

Floor overflow3 2 1J23

J34

J14 21

Standby unit requestJ36

GND+12V

CANHCANL

Temp/Hum detection board

Energy-saving cardPressure

sensor

23

J212

Black

Connection description:1. This diagram is only for 12.5kW model.2. There is no electric heater contactor KM2, electric heater, humidifying contactor KM3, inner fan relay KA1, humidifying control board and the corresponding cables in the single cooling unit. 3. There is no humidifying contactor KM2, inner fan relay KA1, humidifying control board and the corresponding cables in the heating model. 4. Both single cooling model and heating model are not equipped with inner fan relay KA1. The black plug of the inner fan connects J18-4 terminal directly; after crimped by the closed end connectors, the blue plug connects to the electric control box.5. There are transformer T2 and connection terminal TB2 Only when the heating and humidifying function are select; The single cooling model is not equipped with transformer T2 and connection terminal TB2.6. The energy-saving card and the monitoring card are options; If you need them, field connection is essential.7. The power SPD is equipped with T version unit; P version unit does not have power SPD and corresponding cables, J19-1 and J19-2 of the control board is shorted using cable.

Factory supplied lineField supplied lineParts supplied line

Cable description:

Outdoor connection

terminal

NL L1

N1Indoor

terminal block



Connection cable between the indoor and outdoor terminal

12VGND

AB

GND12VAB

Inserted terminal

3

4

1

2

Humidify-ing tub

TAMHumidify normally1Drain manually0

G

ONGND

G0

DR

EV2G

EV1

LS

TLR

+VRSETGNDABAB

AL

TLR

AL

Inlet solenoid valve

Water level probe

Conductivity probe

Hum

idify

ing

cont

rol b

oard

10 20

5

6

13

14

5

6

A1

A2

A1

A2

Transformer T2Red

21

TB2-26


QF-

1

QF-

3

QF-

5

SP

D-1

SP

D-2

SP

D-3

SP

D-N

KM

1-1

KM

1-3

KM

1-5

KM

1-21

KM

1-2

KM

1-4

KM

1-6

T1 T2 T3

KM

2-1

KM

2-3

TB1-1TB1-2TB1-3TB1-4TB1-5TB1-6

TB1-N

TB1-NTB1-N

KM

3-1

KM

3-3

TB1-11

TB1-13

TB1-15

TB1-NTB1-N

KM

3-3

KM

3-6

J1-L J02-2J1-N

J01-

1

J01-

3

J01-

5

J01-

7J18-1J18-2J18-3

J2-2

J2-1

HU

M-L

HU

M-N

TB2-

21

KM

3-A

1 G G0

TLR

J28-3J28-4

J28-1J28-2

+VRSETKM2-A2TB2-24

J03

NPE

J19-7J19-8

J19-4J19-3J19-2J19-1

14

J28-

4

+5V

VIN

GN

D

Remote turn on/off

J28-7J28-8

Standby unit is available

J19-5J19-6

13

14

4

2

6

5

3

1

KA

1-4

45 1

J18-4

J28-5J28-6

KA1-1TB2-31

KM

2-A

1

J28-

6

KA

1-3

Gray

Black

Yellow-green

J3-4

PE

J28-9J28-10

Public alarm

KM

1-22

TB1-7TB1-8TB1-9TB1-10


NNN

NNN

N N

TB1-7TB1-8TB1-9TB1-10

Black

PE1

J3-2

J3-1

Monitoring cardDB9J14-1J14-2


To outdoor unit

L1N1PE1

380V/50Hz 3N～

KM2 KM3 KA1

J28-

3

TB2-23TB2-25KM3-A2

TB2-

21

L1N1KM1-A2

J3-4

J18-

3

KM1-A1

TLR

TB2-

22

J28-

5TB

2-28

J28-1J28-2

J19-3J19-4

J19-

2J1

9-1

J28-7J28-8J28-9J28-10

Bla

ck

SPD-NCSPD-COM

ALAL

2223242526272829303132

TB2-

22TB

2-23

TB2-

28

TB2-

24TB

2-25

TB2-

26TB

2-31

J3-1

J3-2

LS

CSCS

Bla

ck Bla

ck

Bla

ck

Bla

ck

Yel

low

-gre

en

Blu

e

Yel

low

-gre

enB

lack

Bla

ck

Bla

ckB

lack

Bla

ck

Bla

ck

Bla

ckB

lack

Bla

ck

Bla

ck

Bla

ck

Blu

e

Blu

e

Bro

wn

Bro

wn

Bla

ck

Bla

ck

Bla

ck

Bla

ck

Bla

ck

Bla

ck

Outlet solenoid valve

Yel

low

-gre

en

Bro

wn

Bro

wn

Bla

ck

Blu

eW

hite

BlackBlackBlack

BlackBlack

Bla

ck

Bla

ck

Bla

ck

Bla

ck

Bla

ckG

reen

Red

Gray

BrownBlackBlackBlackBlackBlackBlackBlackBlack

BlackBlackBlueBlueBlackBrown

Yellow

Black Yellow

FuseBlack Yellow

Yellow

Appendix 3 Glossary 28


Appendix 3 Glossary

AC Air conditioner

ID Inside diameter

LCD Liquid crystal display

Lee-Temp Low temperature

OD Outside diameter

SPD Surge protective device

SCR Silicon controlled rectifier

Emerson Network Power Asia

PakistanT: 92-42-36622526 to 28F: 92-42-36622530

PhilippinesT: 63-2-7207400 F: 63-2-6203693

SingaporeT: 65-64672211F: 65-64670130

ThailandT: 66-2-6178260F: 66-2-6178277 to 78

VietnamT: 84-4-37628908F: 84-4-37628909

AustraliaT: 1800-065345F: 61-2-97810252

IndonesiaT: 62-21-2513003F: 62-21-2510622

JapanT: 81-3-54038564F: 81-3-54032919

KoreaT: 82-2-34831500F: 82-2-5927886

MalaysiaT: 603-78845000F: 603-78845188

New ZealandT: 64-3-3392060F: 64-3-3392063

While every precaution has been taken to ensure the accuracy and completeness of this literature, Emerson Network Power assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions.

Emerson, Business-Critical Continuity and Emerson Network Power are trademarks of Emerson Electric Co. or one of its affi liated companies.

©2013 Emerson Electric Co. All rights reserved throughout the world. Specifi cations subject to change without notice.

Emerson Network Power.www.EmersonNetworkPower.AsiaThe global leader in enabling Business-Critical Continuity™.

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