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Module-CUBE-EC-Series-Installation-Manual-030420 Module-CUBE-EC-Series-Installation-Manual-030420 Cube EC Series Design & Installation Manual Includes: CU-31-EC CU-51-EC Space Heating and Cooling Fresh Air Make-Up Exhaust Air Manufactured By

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Page 1: Cube EC Series Design & Installation Manual€¦ · Cube EC Series Design & Installation Manual Includes: CU-31-EC CU-51-EC Space Heating and Cooling Fresh Air Make-Up ... installation

Module-CUBE-EC-Series-Installation-Manual-030420Module-CUBE-EC-Series-Installation-Manual-030420

Cube EC Series Design & Installation Manual

Includes:CU-31-EC CU-51-EC

Space Heating and CoolingFresh Air Make-Up

Exhaust Air

Manufactured By

Page 2: Cube EC Series Design & Installation Manual€¦ · Cube EC Series Design & Installation Manual Includes: CU-31-EC CU-51-EC Space Heating and Cooling Fresh Air Make-Up ... installation

www.hi-velocity.com

© © 1995-2020 Energy Saving Products Ltd.1995-2020 Energy Saving Products Ltd.

Installation

The Cube Series of fan coils by Energy Saving Products Ltd. can be installed in the hi-boy, horizontal, or counterflow positions. Return air access must be from the rear of the unit. The Cube fan coil comes standard with backward curved centrifugal fan, 24 volt circuit board and a hydronic water coil.

The Cube can be ducted or unducted, with or without 24v controls, and can come with a hydronic water coil (H) or without (BU).

The Cube was designed to be versatile so it can be used in many different installation applications including indoors, attics, crawl spaces, garage and space heating/cooling locations.

A steam humidifier can be installed on ducted installations, 18” down stream of the supply air collar. When used for heating/cooling, the standard 24 volt circuit board can prioritize thermostat calls, turn on and off different fan speeds and control output signals to heating and cooling equipment.

Hydronic connections are 3/8” I.D. (Cube-31) and 3/4” I.D. (Cube-51). The connections are copper sweat connections, and should be piped to allow access to the filter and control access panel for maintenance and service.

IMPORTANT: The Hi-Velocity System is not to be used for temporary heating or cooling during the construction of the

structure. If used in this capacity all warranties will be null and void.

For in-depth ducting, outlet, fan coil and return air placement & installation, please contact the factory at 1-888-652-2219 or email [email protected] Fan coil units shall be a total indoor air quality system complete

with heating, cooling, air filtration, and possibility of humidity control and fresh air make up. The fan coil must be factory manufactured, assembled and tested.

Quality Assurance

ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers

AHRI Air-Conditioning, Heating, and Refrigeration Institute

CSA Canadian Standards Association

CE European Conformity

DOE Department of Energy

UL Underwriters Laboratories

All equipment furnished under this specification shall comply with the following standards:

Refer to Module SPC - Specifications and Sizing for system specifications, measurements, etc. For more detailed specification pages please see our website.

Also available on our website:• Installation Videos• Promotional Video• Engineering Specifications• Downloadable Installation Modules• Complete Parts List• Complete list of Agents/Distributors• Case Studies

www.hi-velocity.com

Module CubeCube Series Manual 2/16)

-2--2-

Please read the ENTIRE manual before beginning installation as this will help avoid mistakes that may cost time and money.

Page 3: Cube EC Series Design & Installation Manual€¦ · Cube EC Series Design & Installation Manual Includes: CU-31-EC CU-51-EC Space Heating and Cooling Fresh Air Make-Up ... installation

www.hi-velocity.com

© © 1995-2020 Energy Saving Products Ltd.1995-2020 Energy Saving Products Ltd.

CU-31/51 Space Heating or Cooling (Ducted)

Note: Hard pipe, branching with flex duct or drilled outlet system is acceptable

Return Air Supply Air DuctingDX CoilCube

Fan Coil

Filter

HWC Coil

CU-31/51 Space Heating or Cooling (Non-Ducted or Conventional Ducting)

Note: For conventionally ducted applications, the 8” round supply air collar can be removed so it can be connected to conventional rectangular duct work. For unducted applications, the 8” round supply air collar can be used for increased air velocity and throw.

Supply AirDX Coil

Filter

HWC Coil

CUBE EC Fan Coil - Typical Applications

Module CubeCube Series Manual 3/16)

-3--3-

CubeFan Coil

Page 4: Cube EC Series Design & Installation Manual€¦ · Cube EC Series Design & Installation Manual Includes: CU-31-EC CU-51-EC Space Heating and Cooling Fresh Air Make-Up ... installation

www.hi-velocity.com

© © 1995-2020 Energy Saving Products Ltd.1995-2020 Energy Saving Products Ltd.

Module CubeCube Series Manual (4/16)

-4--4-

Cube Design

The following section is basic information needed for the designer. If not done already, this section should be read thoroughly before beginning installation.

IMPORTANT: For cooling applications, a minimum of 6 (six) HE outlets or 12 (twelve) 2” outlets per ton is required for all Cube Series fan coils. Any combination of HE and/or 2” outlets can be used to meet this minimum.

IMPORTANT: The Cube Series Fan Coil is designed for use with 5 foot flexible ducts. 10 foot flexible ducts can be used but the total number used cannot exceed 1/3 (33%) of the total number used on the system. Using all 10 foot lengths is allowable, but may result in a decrease in the system’s total capacity.

Table 01 - Allowable Flex Duct Branch Lengths

Model Min. Length Max. Length

Cube Series 5’ (1.52m) 10’ (3.05m)

LocationThe multi-positional fan coil can be installed in many different

configurations. The fan coil can be located in a Vertical, Horizontal, or Counter-Flow position.

The main plenum we choose to use is 8”, it is not required to use 8” for the whole run. If space or cost is a concern, the main plenum can be reduced down to a smaller size. If reducing the plenum, reference Table 02 for allowable length and maximum number of vents for the size chosen. Never reduce at a bullhead tee, always reduce after the bullhead tee or you can lose approximately 20% of your airflow.

Table 02 – Duct Reduction

Duct Size

# of HE Vents

# of 2” Vents

Max Length

5” (127mm) 3 6 30’ (9.14m)

6” (152mm) 6 12 40’ (12.19m)

7” (178mm) 9 18 40’ (12.19m)

8” (203mm) 12 24 50’ (15.24m)

Duct Reduction

CUBE-EC Fan Coil - Design & Installation

Elbow and Tee PlacementElbows and tees must not be placed any closer than 18” from

supply outlet on the air handling unit. A significant loss of airflow can result if elbows or tees are installed closer than 18” (457mm). Figs. CUB-01 and Fig. CUB-02 illustrate a proper install with at least 18” of straight plenum after the unit supply outlet. Fig. CUB-03 shows the sigma velocity profile of the first 18” (457mm) of the main plenum and why it’s important to allow the system to equalize air flow.

Page 5: Cube EC Series Design & Installation Manual€¦ · Cube EC Series Design & Installation Manual Includes: CU-31-EC CU-51-EC Space Heating and Cooling Fresh Air Make-Up ... installation

www.hi-velocity.com

© © 1995-2020 Energy Saving Products Ltd.1995-2020 Energy Saving Products Ltd.

Module CubeCube Series Manual (5/16)

-5--5-

Fig. CUB-03 - Sigma Velocity Profile

UniformVelocity

Point10% Loss

20% Loss

30% Loss18”(457mm)

IMPORTANT! ENSURE

plenum runs a minimum of 18” (457mm) before any

tees, elbows and take-offs.

IMPORTANT: If elbows, tees, or branch take-offs are placed closer than 18” (457mm) you may lose up to 30% of your airflow as illustrated in Fig. CUB-03.

Bullhead TeesBullhead tees are to be maintained as close to a 50/50 split as

possible, with a maximum 60/40 split (Fig. CUB-02). For the best system performance, keep the number of elbows and tees to a minimum.

After any connection is made, including the joints of elbows and tees, foil duct tape or a duct sealant should be used to eliminate any air leaks.

Fig. CUB-04 - Seal all connections

Branch TeesWhen branch tees are used, the plenum split is to be a 70/30

main/branch split (Fig. CUB-01).

Fig. CUB-01 - Branch Tee, 70/30 split

Fig. CUB-02 - Bullhead Tee, 50/50 split

Cube

30% FLOW 6 Vents

70% FLOW

14 Vents

EXAMPLE20 VENTS

18” Min.(457mm)

EXAMPLE20 VENTS

50% FLOW(+/- 10%)10 Vents

50% FLOW(+/- 10%)10 Vents

18” Min.(457mm)

Cube

Page 6: Cube EC Series Design & Installation Manual€¦ · Cube EC Series Design & Installation Manual Includes: CU-31-EC CU-51-EC Space Heating and Cooling Fresh Air Make-Up ... installation

www.hi-velocity.com

© © 1995-2020 Energy Saving Products Ltd.1995-2020 Energy Saving Products Ltd.

Module CubeCube Series Manual (6/16)

-6--6-

The return air duct is not supplied with the Cube. It is to be supplied and installed by the contractor. The return air and fresh air make-up ducts are to be installed according to local building code.

The return air duct from the air handling units is to be acoustically lined for sound absorption, for the first five feet, or for the line of sight. This only applies on short return air duct work of less than 10 feet (3.05m).

The return air is to be sized on a 0.15 static pressure (37 pa) as compared to 0.10 static pressure (25 pa) for conventional forced air systems. The maximum length for an individual return air duct is thirty feet (9.14m).

Duct Sizing

Table 03 has recommended return air sizes for round and rectangular ducts. A variance of plus 20% is allowable for sizing return ducts that connect to the Hi-Velocity Systems unit.

Where allowed by local codes, a single return air grill may be used. Note: Return air grill must have equal minimum of free air area to return air.

Return Air

Table 03 – Return Air Duct Sizes

Unit Rigid Ø Flex Ø Min Sq. Inches

(Sq. cm)

CU-31 12” (305mm)

14” (356mm)

120(774cm)

CU-51 12” (305mm)

14” (356mm)

120(774cm)

Remember: When using flexible duct for return air, use one duct size larger due to the higher friction loss.

When designing the return air for the Cube Series, there are a few things to consider. It is common to use centralized return air with systems that have rooms that are within a common area. Separate floors or rooms that have high loads and require a large amount of supply air flow should have their own return air, or be tied into the centralized return air to allow the air to return back to the fan coil. Rooms or areas that cannot be tied into the return air should have an air transfer grill to allow the air to escape the room and flow back to a centralized return air.

The Cube Series Fan Coil is a pressure supply duct system that forces the air into rooms through supply outlets. A closed room will pressurize, and air will escape through the undercut of a door back to a centralized return air. (i.e. a typical bedroom with two 2” outlets or 1 HE outlet will deliver 64 cfm into the space, a 1/2” undercut door will provide 15 square inches of r/a from the space at a transfer velocity of 4 fpm, sufficient to provide comfortable r/a.) If more than four 2” or two HE vents are installed in a room, or if there is a sealed door in the room, an air transfer grill or return air should be installed to allow the air back to the fan coil.

Important: When using flexible duct for return air, use one duct size larger due to the higher friction loss.

Important: Keep any restrictions like filters or coils a minimum of 2” away from the fan inlet, so maximum air flow of the system is not affected.

2” minimum before any restriction

IMPORTANT: Use of an air filter is always recommended.

Please note: It is VERY important NOT to undersize the return air, as this will create noise, increase motor power consumption and reduce airflow.

Page 7: Cube EC Series Design & Installation Manual€¦ · Cube EC Series Design & Installation Manual Includes: CU-31-EC CU-51-EC Space Heating and Cooling Fresh Air Make-Up ... installation

www.hi-velocity.com

© © 1995-2020 Energy Saving Products Ltd.1995-2020 Energy Saving Products Ltd.

Module CubeCube Series Manual (7/16)

-7--7-

Cube 31/51 Fresh Air Make-Up

A - CU-31/51 UnitB - CU-31/51 FanC - Fresh Air DamperD - FilterE - Constant Temp Control ValveF - Low Temp. Cut-out

BB

EEDD

CC

A

FF

LiveLive

NeutralNeutral

Blk or RdBlk or Rd

WhiteWhite

120 Volt 120 Volt SupplySupply

Supply Water/GlycolSupply Water/Glycol

Return Water/GlycolReturn Water/Glycol

Intake/Intake/Return AirReturn Air

Cube Series Exhaust Air Units

Cube Series fan coils can be used as stand alone central exhaust ventilators, or as a fan coil for fresh air make-up to provide a balanced ventilation system. Typical installations will have an intake from each bathroom and an intake from the kitchen running to the unit with an eight inch exhaust to outside. Manual dampers are recommended to be installed on each duct run to assist in system balancing.

Cube Exhaust Air Unit Typical Connections

Intake Dampers

Discharge Duct

Exhaust Hood

Room Intakes

Transition Plate

Intake Duct

End Cap

Balancing Damper

Transition Plate

CUBE-EC Fan Coil - Other Applications

CubeUnit

Page 8: Cube EC Series Design & Installation Manual€¦ · Cube EC Series Design & Installation Manual Includes: CU-31-EC CU-51-EC Space Heating and Cooling Fresh Air Make-Up ... installation

www.hi-velocity.com

© © 1995-2020 Energy Saving Products Ltd.1995-2020 Energy Saving Products Ltd.

Module CubeCube EC Series Manual (8/16)

-8--8-

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Page 9: Cube EC Series Design & Installation Manual€¦ · Cube EC Series Design & Installation Manual Includes: CU-31-EC CU-51-EC Space Heating and Cooling Fresh Air Make-Up ... installation

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© © 1995-2020 Energy Saving Products Ltd.1995-2020 Energy Saving Products Ltd.

The Hi-Velocity CUBE-EC Series Fan Coil utilizes a dual function Circuit Board. The Cube Series comes standard in manual mode (H3 mode jumper in “MAN” position) for direct fan speed adjustments using the trim pots.

CUBE-EC PSB Circuit Board

Features:• Wiring the circuit board is a quick and simple task.

• Clearly labeled connections.

• No additional relays typically required.

• The Cube Series comes set in “Manual” mode and allows for direct speed control of the fan anywhere from 0-100% capability.

• Fan speeds are individually set for cooling, heating and constant fan using the three trim pots located on the PSB.

• Circuit board is capable of controlling boilers, dual purpose hot water heaters, heat pumps, and geothermal systems, as well as our manufactured slide-in electric strip heaters (ESH).

• The circuit board is also designed to send control signals to cooling sources such as condensing units, chillers, heat pumps and geothermal systems.

• Circuit board features an auxiliary relay with dry contacts connections, so that any applications requiring 24v, 120v, 230v or dry contacts (boilers, hot water heaters, heat pumps & humidifiers) can be automatically started when there’s a call for heat.

• Circulator timer chip is provided to prevent water stagnation in potable water systems and to provide pump rotor protection for water source heating and cooling.

• If you wish to have the timer cycle operate at a specific time of day, simple turn off power to the fan coil unit for ten seconds at that time and then turn the power back on..

Auxiliary Relay Terminals (Heating)

VDC Control Method Switch

Pressure Sensor Indicator Light

Fan Adjustment Trimpots

Operation Mode Indicator

0 - 10v DC Output

Fan Delay On/Off Switch

T’Stat Connections

24v Auto-Reset

Fuse

Condenser/Zone Valve Connections

Pump Timer on/off Switch

Emergency Disconnect

• If you do not need to use the timer, move the jumper header from the On pins to the Off pins and it will be disabled.

• Circuit board is equipped with an emergency disconnect feature. If there’s an emergency this feature will de-energizing all fan speeds and connected equipment.

• For this emergency disconnect feature to be active a jumper header must be remove from the pins located close to the emergency disconnect terminal strip.

• A fan delay is programmed into the circuit board. This delay will prevent the fan from starting for 20 seconds on cooling, 30 seconds on heating, and purge for 30 seconds on shut-down. This delay is beneficial in certain applications to give the heating or cooling equipment a “head start” before the fan turns on.

Function:• Manages input power and through the use of a transformer it supply 24vac to additional equipment.

• Organizes all thermostat inputs and prioritizes them accordingly.

• Sends a 0-10vdc output to the fan assembly, dependent on how fast it wants the fan to run.

Module CubeCube EC Series Manual (9/16)

-9--9-

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© © 1995-2020 Energy Saving Products Ltd.1995-2020 Energy Saving Products Ltd.

*Note: FZ to FZ recommended to be wired to Freeze Stat (Anti-Ice Control). For chilled water applications, a jumper between FZ to FZ must be installed to complete the Y2 - 24V Signal to Y on Condenser.

CUBE-EC Fan Coil - PSB Circuit Board Wiring

24 VAC Input terminals (t-stat connections):W1:W1: 1st stage Heating, Runs at the heating speed when 24v (R) is supplied, set by the heat trim pot. 1st stage Heating, Runs at the heating speed when 24v (R) is supplied, set by the heat trim pot.

W2: W2: 2nd stage Heating, Runs at the heating speed when 24v (R) is supplied, set by the heat trim pot. The difference between a W1 2nd stage Heating, Runs at the heating speed when 24v (R) is supplied, set by the heat trim pot. The difference between a W1 call and a W2 call is the output terminal that will be energized with 24v. (W1 energized on t-stat terminal strip will provide 24v call and a W2 call is the output terminal that will be energized with 24v. (W1 energized on t-stat terminal strip will provide 24v to W1 on output terminal strip, W2 energized on t-stat terminal strip will provide 24v to W2 on output terminal strip,)to W1 on output terminal strip, W2 energized on t-stat terminal strip will provide 24v to W2 on output terminal strip,)

C: C: CommonCommonG: G: Constant Fan, Runs at the Constant Fan speed when 24v (R) is supplied, set by the Fan trim pot.Constant Fan, Runs at the Constant Fan speed when 24v (R) is supplied, set by the Fan trim pot.

R: R: 24 volt supply 24 volt supply (Note: As long as Transformer is connected & the Fire Disconnect/Jumper Pin Header is Present)(Note: As long as Transformer is connected & the Fire Disconnect/Jumper Pin Header is Present)

Y2:Y2: 2nd stage Cooling, Runs at the Cooling speed when 24v (R) is supplied, set by the Cool trim pot.2nd stage Cooling, Runs at the Cooling speed when 24v (R) is supplied, set by the Cool trim pot.

Y1: Y1: 1st stage Cooling, Runs at the Cooling speed when 24v (R) is supplied, set by the Cool trim pot. The difference between a Y1 call 1st stage Cooling, Runs at the Cooling speed when 24v (R) is supplied, set by the Cool trim pot. The difference between a Y1 call and a Y2 call is the output terminal that will be energized with 24v. (Y1 energized on t-stat terminal strip will provide 24v to Y1 and a Y2 call is the output terminal that will be energized with 24v. (Y1 energized on t-stat terminal strip will provide 24v to Y1 on output terminal strip, Y2 energized on t-stat terminal strip will provide 24v to Y2 on output terminal strip,)on output terminal strip, Y2 energized on t-stat terminal strip will provide 24v to Y2 on output terminal strip,)

D:D: Runs at 70% Cooling speed when 24v (R) is supplied, set by the Cool trim pot.Runs at 70% Cooling speed when 24v (R) is supplied, set by the Cool trim pot.O/B:O/B: Heat Pump ReversingHeat Pump Reversing

Fan Speed Priority Sequence (from highest to lowest): D=1st Y=2nd W=3rd G=4th

24 VAC Output terminals (24v output connections):

R:R:24 volt Supply 24 volt Supply (Note: As long as Transformer is connected & the Fire Disconnect/Jumper Pin Header is Present)(Note: As long as Transformer is connected & the Fire Disconnect/Jumper Pin Header is Present)

C: C: CommonCommonY1: Y1: 1st Stage Cooling Equipment1st Stage Cooling Equipment Y2: Y2: 2nd Stage Cooling Equipment*2nd Stage Cooling Equipment*W2:W2: 24v Output to 2nd Stage Heating Equipment.24v Output to 2nd Stage Heating Equipment.W1:W1: 24v Output to 1st Stage Heating Equipment.24v Output to 1st Stage Heating Equipment.FZ:FZ: Freeze Stat Connection*Freeze Stat Connection*FZ:FZ: Freeze Stat Connection*Freeze Stat Connection*

Emergency Disconnect:

C:C: CommonCommon

C: C: CommonCommon

Ro:Ro:

Provides 24VAC to the entire PSB board. In order for “Ro” to receive power it must be connected to terminal “Ri”. This can be Provides 24VAC to the entire PSB board. In order for “Ro” to receive power it must be connected to terminal “Ri”. This can be done via the three pin jumper header (H1) located above the terminal strip, a wire jumper or normally closed safety device done via the three pin jumper header (H1) located above the terminal strip, a wire jumper or normally closed safety device installed between “Ro” and “Ri”. installed between “Ro” and “Ri”. The jumper pin header (H1) will need to be removed to activate the emergency discon-The jumper pin header (H1) will need to be removed to activate the emergency discon-nect option.nect option.

Ri: Ri: Receives 24VAC direct from the transformer. Power must then be sent to the “Ro” terminal to be distributed throughout the Receives 24VAC direct from the transformer. Power must then be sent to the “Ro” terminal to be distributed throughout the rest of the PSB board. rest of the PSB board.

Module CubeCube EC Series Manual (10/16)

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Auxiliary Heating Relay:

N:N: NeutralNeutral

L:L: Line VoltageLine Voltage

A1:A1: Auxiliary Relay Normally Open Auxiliary Relay Normally Open

A2:A2: Auxiliary Relay Normally Closed Auxiliary Relay Normally Closed

A3:A3: Auxiliary Relay CommonAuxiliary Relay Common

CUBE-EC Fan Coil - PSB Circuit Board Wiring Cont’d

Control Signal:

J8:J8: 0-10 Volt DC Output to VFD0-10 Volt DC Output to VFD

Module CubeCube EC Series Manual (11/16)

-11--11-

3 Pin Jumper Terminals:H1: Emergency Disconnect

H2 Timer:H2 Timer:Pump timer cycles the pump on for 5 minutes every 24 hours to prevent stagnant water. (on/off) Pump timer cycles the pump on for 5 minutes every 24 hours to prevent stagnant water. (on/off) The jumper pin header (H2) The jumper pin header (H2) will need to be in the ON position for the timer to be active. will need to be in the ON position for the timer to be active.

H3 Mode: H3 Mode:

Switches the control method used by the PSB to control motor speed. Switches the control method used by the PSB to control motor speed. “Auto” uses the pressure transducer in order to modulate fan speed to maintain a constant supply pressure.“Auto” uses the pressure transducer in order to modulate fan speed to maintain a constant supply pressure.“Man” allows for direct speed control of the motor by-passing the pressure transducer. The jumper pin header (H3) determines the control method.

H4 Delay: H4 Delay: Cooling/20 second, Heating/30 second fan delay, and 30 second post purge. Cooling/20 second, Heating/30 second fan delay, and 30 second post purge. The jumper pin header (H4) will need to be in The jumper pin header (H4) will need to be in the ON position for the delay to be active.the ON position for the delay to be active.

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Module CubeCube EC Series Manual (12/16)

-12--12-

Cube-51-EC Dimensions

Cube-31-EC Dimensions

14"(356mm)

Ø8"(203mm)

13.5"(343mm)

Ø0.375"(10mm)

Electrical Box

Ø6.25"(159mm)

SIDE VIEWFRONT VIEW

14.5"(368mm)

2.5"(64mm)

BOTTOM VIEWBOTTOM VIEW(RETURN AIR OPENING)(RETURN AIR OPENING)

TOP VIEWTOP VIEW(SUPPLY AIR OPENING)(SUPPLY AIR OPENING)

4"(102mm)

2.5"(64mm)

2.5"(64mm)

14"(356mm)

2.5"(64mm)

18.25"(464mm)

Ø0.75"(19mm)

BOTTOM VIEWBOTTOM VIEW(RETURN AIR OPENING)(RETURN AIR OPENING)

TOP VIEWTOP VIEW(SUPPLY AIR OPENING)(SUPPLY AIR OPENING)

Electrical Box

14"(356mm)

Ø8"(203mm)

FRONT VIEW

16.25"(413mm)

Ø6.25"(159mm)

2.5"(64mm)

SIDE VIEW

14"(356mm)

4"(102mm)

2.5"(64mm)

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© © 1995-2020 Energy Saving Products Ltd.1995-2020 Energy Saving Products Ltd.

Module CubeCube EC Series Manual (13/16)

-13--13-

CU-31-EC CU-51-ECHot Water Heating(1) Max Air Flow Max Air Flow

Max. BTUH @ 200°F E.W.T. (kW @ 93°C) 31,400 (9.2 kW) 64,300 (18.8 kW)

Max. BTUH @ 190°F E.W.T. (kW @ 88°C) 29,200 (8.6 kW) 59,400 (17.4 kW)

Max. BTUH @ 180°F E.W.T. (kW @ 82°C) 26,900 (7.9 kW) 54,500 (16.0 kW)

Max. BTUH @ 170°F E.W.T. (kW @ 77°C) 24,600 (7.2 kW) 49,600 (14.5 kW)

Max. BTUH @ 160°F E.W.T. (kW @ 71°C) 22,300 (6.5 kW) 44,600 (13.1 kW)

Max. BTUH @ 150°F E.W.T. (kW @ 66°C) 21,100 (6.1 kW) 39,700 (11.6 kW)

Max. BTUH @ 140°F E.W.T. (kW @ 60°C) 17,800 (5.2 kW) 34,700 (10.2 kW)

Max. BTUH @ 130°F E.W.T. (kW @ 54°C) 15,600 (4.6 kW) 29,700 (8.7 kW)

GPM Flow Ratings (L/s Flow Ratings) 2 (0.13 L/s) 5 (0.32 L/s)

Pressure Drop in Ft. H2O (Drop in KPa) 6.3 (18.83 KPa) 3 (8.97 KPa)

Cube-EC Series SpecificationsSpace Heating, Cooling and Fresh Air Make-Up

Fan Coil Specifications CU-31-EC CU-51-ECNominal CFM (L/s) 400 (190 L/s) 500 (236 L/s)

Max Rated CFM (L/s) 450 (212 L/s) 550 (260 L/s)

Voltage 115/1/50/60 F.L.A. 2 amp 115/1/50/60 F.L.A. 2 ampNominal Operating Amperage 1.5 1.5Horse Power - Watts 1/4 - 215 1/4 - 215Motor RPM Variable / 3340 (max) Variable / 3340 (max)Hydronic Connections

Supply Ø3/8” (9.5mm) Ø3/4” (19mm)

Return Ø3/8” (9.5mm) Ø3/4” (19mm)

Supply Air SizeRound Duct Square Duct Round Duct Square Duct

Ø8” round (203mm) 12.5” x 13” Ø8” round (203mm) 17.5” x 13”Supply Maximum Length (2) 50’ (15.24m) 50’ (15.24m)

Return Air Size Needed Ø10” or 100 in2 Ø12” or 120 in2

Nominal Outlets (3) 6 (HE) 12 (2”) 10 (HE) 20 (2”)Maximum Outlets (3) 10 (HE) 20 (2”) 12 (HE) 24 (2”)Shipping Weight (w/ Heating Coil) 25 lbs (11.3 Kg) 40 lbs (18.1 Kg)

Fan Coil Size LengthWidthHeight

14” (356mm)131/2” (343mm)141/2” (368mm)

14” (356mm)181/4” (464mm)161/4” (413mm)CFM - Cubic Feet per Minute F.L.A. - Full-Load Amperage RPM - Revolutions per MinuteEAT- Entering Air Temperature

BTUH - British Thermal Units per HourE.W.T. - Entering Water TemperatureGPM - US Gallons per MinuteL/s - Litres per Second

Chilled Water Cooling(1) N/A WBM/WCM-50Coil Type 6 Row/10 FPI

WBM/WCM Modules in Cooling Mode N/A Total SensibleMax. BTUH @ 48°F E.W.T. (kW @ 8.9°C) 19,300 (5.7 kW) 13,700 (4.0 kW)

Max. BTUH @ 46°F E.W.T. (kW @ 7.8°C) 20,900 (6.1 kW) 14,200 (4.2 kW)

Max. BTUH @ 44°F E.W.T. (kW @ 6.7°C) 22,600 (6.6 kW) 14,900 (4.4 kW)

Max. BTUH @ 42°F E.W.T. (kW @ 5.6°C) 24,200 (7.1 kW) 15,700 (4.6 kW)

Max. BTUH @ 40°F E.W.T. (kW @ 4.4°C) 25,800 (7.6 kW) 16,300 (4.8 kW)

WBM/WCM Modules in Heating Mode N/A TotalMax. BTUH @ 150°F E.W.T. (kW @ 66°C) 39,700 (11.6 kW)

Max. BTUH @ 140°F E.W.T. (kW @ 60°C) 34,700 (10.2 kW)

Max. BTUH @ 130°F E.W.T. (kW @ 54°C) 29,700 (8.7 kW)

Max. BTUH @ 120°F E.W.T. (kW @ 49°C) 24,800 (7.3 kW)

Max. BTUH @ 110°F E.W.T. (kW @ 43°C) 20,100 (5.9 kW)

GPM Flow Ratings (L/s Flow Ratings) 5 (0.32 L/s) Pressure Drop in Ft. H2O (Drop in KPa) 3 (8.97 KPa)

Refrigerant Cooling(1) RCM-30 RBM/RPM-E/RCM-50RBM/RPM-E/RCM Modules

BTUH Refrigerant TX Cooling 1.0 Ton (3.5 kWh) 1.5 - 2.0 Tons (5.3 - 7 kWh)

Matching CoilsRefrigerant Coils

RCM-30, RBM/RPM-E/RCM-50Chilled Water Coils

WBM/WCM-50Hot Water Coils

HWC-30, HWC-50

(3) (3) Refer to page 5 for details on flex allowances.

(2) (2) Maximum length is from the unit to the supply run end cap. More than one run per unit is allowable.Maximum length is from the unit to the supply run end cap. More than one run per unit is allowable.

(1) (1) HeatingHeating specs are rated at 68 specs are rated at 68°F E.A.T., Cooling specs are rated at 80°F/67°F dB/wB

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© © 1995-2020 Energy Saving Products Ltd.1995-2020 Energy Saving Products Ltd.

• Inoperative parts must be returned to Energy Saving Products Ltd. with an ESP RMA Form that includes model, serial number, and a detailed description of the entire problem. Inoperative parts must be returned in testable condition.

• This warranty does not cover shipping costs to and from the factory, labor costs or any other cost associated with the installation of the replacement part.

• Energy Saving Products Ltd. is not liable for any other damages, personal injury, or any other losses of any nature.

• The liability of Energy Saving Products Ltd. is limited to and shall not exceed the cost of pre-approved replacement parts.

A Three (3) Year Limited Warranty is extended on Electric Strip Heaters.

A Five (5) Year Limited Warranty is extended on all components in products manufactured exclusively by Energy Saving Products. These components include Motors, WEG Controller, Circuit Boards, Dampers, Zoning Controls, Blowers, Motor & Blower Assemblies, Heating Coils, Chilled Water Coils, and Air Conditioning Coils. Note: If any product is installed in or exposed to a corrosive environment, warranty will be void.

Energy Saving Products Ltd. is proud to offer a limited warranty. This warranty applies strictly to the first purchaser at wholesale level and only to the fan coil unit and module. It does not include connections, attachments and other products or materials furnished by the installer.

TERMS & CONDITIONS• Any repair performed under warranty must be approved by Energy Saving Products Ltd. for this

warranty to be valid.

This warranty replaces all other warranties expressed or implied.

www.hi-velocity.com

• Should there be multiple consecutive failures of a single part, warranty will not be considered unless a contractor has contacted Energy Saving Products Ltd. Technical Department for assistance, and received a tech code.

Follow these steps for Service or Repair:

1. Contact the installer of the product or a licensed service company 2. Contact the distributor 3. Contact Energy Saving Products Ltd. Mon-Fri 8 am – 4:30 pm MT 1-888-652-2219

This warranty excludes any damages caused by changes, relocation to, or installation in a new site. This warranty does not cover any defects caused by failure to follow the installation and operating instructions furnished with the fan coil. This warranty does not cover defects caused by failing to adhere to local building codes and following good industry standards. Failure to correctly install the fan coil, or material related to the unit, may result in improper system performance and/or damages and will void this warranty. This warranty does not cover material installed in or exposed to a corrosive environment. This warranty does not cover products subjected to abnormal use, misuse, improper maintenance, or alteration of the product. Using the fan coil and/or module as a source of temporary heating/cooling during construction will void this warranty.

Products sold by Energy Saving Products but manufactured by others, will carry the original manufacturer’s warranty.

-14--14-

Page 15: Cube EC Series Design & Installation Manual€¦ · Cube EC Series Design & Installation Manual Includes: CU-31-EC CU-51-EC Space Heating and Cooling Fresh Air Make-Up ... installation

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© © 1995-2020 Energy Saving Products Ltd.1995-2020 Energy Saving Products Ltd.

NOTES

Page 16: Cube EC Series Design & Installation Manual€¦ · Cube EC Series Design & Installation Manual Includes: CU-31-EC CU-51-EC Space Heating and Cooling Fresh Air Make-Up ... installation

TM

Energy Saving Products Ltd, established in 1983, manufactures the Hi-Velocity SystemsTM product line for residential, commercial and multi-family markets. Our facilities house Administration, Sales, Design, Manufacturing, as well as Research & Development complete with an in-house test lab. Energy Saving Products prides itself on Customer Service and provides design services and contractor support.

For all of your Heating, Cooling and Indoor Air Quality needs, the Hi-Velocity System is the right choice for you!

Phone: 780-453-2093 Fax: 780-453-1932

Toll Free: 1-888-652-2219

www.hi–velocity.com

Hi-Velocity HE-Z Fan Coils, Hi-Velocity HE-Z Fan Coils, Green Green TechnologyTechnologyBuild Smart, Breathe Build Smart, Breathe EasyEasy

Small Duct Heating, Cooling and IAQ Systems