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T H E S M A R T S O L U T I O N F O R E N E R G Y E F F I C I E N C Y

Rooftop (TRE) Series

R e v. : O c t o b e r 7 , 2 0 1 9

15

c l i m a t e m a s t e r. c o m

General Line Voltage Wiring

- Be sure the available

power is the same voltage and phase as that shown on
the unit serial plate. Line and low voltage wiring must
be done in accordance with local codes or the National
Electric Code, whichever is applicable.

TRE Power Connection

- Line voltage connection is

made by connecting the incoming line voltage wires to
the power block. Line voltage conduit should be routed
through curb and unit pipe chase. Terminate conduit at
control/compressor deck.

208 Volt Operation

- All 208-240 Volt units are factory

wired for 208 Volt. The transformers may be switched to
240V operation as illustrated on the wiring diagram by
switching the Red (240V) and the Orange (208V) wires on
the transformer primary side. Unused wire terminal will be
“hot” and must be insulated and secured to prevent an
electric short.

Optional GFI Outlet requires dedicated 115V - 20 AMP
circuit provided by installer

�

WARNING!

�

WARNING!

Disconnect electrical power source to prevent

injury or death from electrical shock.

�

CAUTION!

�

CAUTION!

Use only copper conductors for field installed

electrical wiring. Unit terminals are not designed to accept

other types of conductors.

Figure 2 illustrates a typical trap used with TRE Heat Pumps.

Multiple units within the same zone should be operated
from a common temperature control.

Thermostat Wiring -

All wiring must comply with all

applicable electrical codes including NEC and local
codes. Complete all wiring before units are installed.
Use multi conductor, color-coded, low-voltage cable
for all wiring. Refer to unit wiring diagram for required
thermostat connections.

Table 2: Recommended Thermostat Wire Sizes

* Length = physical length of wire from thermostat to unit.

�

CAUTION!

�

CAUTION!

Maintain zone integrity to assure accurate and

efficient operational control of units or groups of units.

Without adequate zone control, adjacent units may operate in

heating and cooling mode simultaneously.

Electrical Wiring

WIRE SIZE

MAX. WIRE LENGTH*

22 - Gauge

30 feet [9.14m]

20 - Gauge

50 feet [15.24m]

18 - Gauge

75 feet [22.86m]

16 - Gauge

125 feet [38.1m]

14 - Gauge

200 feet [60.96m]

Refer to Table 2 for wire sizes and lengths. Do not allow
the total resistance of all low-voltage wires used to exceed
1 ohm. Resistance in excess of 1 ohm may cause high
voltage drop which may result in control malfunction.

Refer to the thermostat installation and operation manual
to determine recommended heat anticipator settings.

When using a DDC building management system (BMS),
communication grade wire may be required. Verify
required communication and sensor wiring type with the
manufacturer of the BMS system components.

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Содержание TRE Series

Страница 1: ...ectrical Low Voltage Wiring non vFlow 18 Electrical Thermostat Wiring 19 Electrical Data 20 TRE Electrical Data ClimaDry 21 TWD Units with MPC DDC Auxiliary Diagram 22 TWD Units with LON DDC Auxiliary Diagram 23 TW Units with Economizer Option 24 TWD Single Compressor DXM2 25 TWD Typical Two Compressor Unit DXM2 26 TRE Series Nomenclature ClimaDry II Option 27 General Information 28 29 ClimaDry II...

Страница 2: ...CL IM A TEM ASTER WATER SOURCE HEAT PUMPS Rooftop TRE Series R ev Octobe r 7 2019 2 ClimateMaster Water Source Heat Pumps This Page Intentionally Left Blank ...

Страница 3: ...D MOTORIZED VALVE COPPER CU COAX CUPRO NICKEL CN COAX E P D F CLIMADRY H Z G Y INTERNAL SECONDARY PUMP COPPER CU COAX CUPRO NICKEL CN COAX REHEAT COIL 3 WAY MOTORIZED VALVE PROPORTIONAL CONTROL CIRCULATING PUMP PUMP CONTACTOR HOT GAS BYPASS DMX2 CONTROL CLIMADRY OPTION COMPONENTS N 575 60 3 D CURRENT REVISION F 460 60 3 H 208 230 60 3 FACTORY WIRED 208 A C U R B A A A A 1 2 3 4 5 9 10 11 12 Model ...

Страница 4: ... installation Unit Protection Cover rooftop units on the job site Cap the open ends of pipes In areas where painting plastering roofing or the spraying of fireproof material has not been completed all due precautions must be taken to avoid physical damage to the units and con tamination by foreign material Physical damage and contamination may prevent proper start up and may result in costly equip...

Страница 5: ...ain Hood Optional Rain Hood Pipe Chase Top View of Base S e r v i c e A c c e s s 3 5 1 1 m e t e r s S e r v i c e A c c e s s 3 5 1 1 m e t e r s Size Outdoor Air Opening Water In Out IPT TRE36 12 57 X 30 3 4 TRE48 12 57 X 30 3 4 TRE60 12 57 X 30 1 TRE72 12 57 X 30 1 1 4 Condensate 1 1 1 1 TRE036 072 Dimensional Data ...

Страница 6: ... Heat Pumps Top View of Base Optional Rain Hood Optional Rain Hood S e r v i c e A c c e s s 3 5 1 1 m e t e r s Service Access 3 5 1 1 m eters Size Outdoor Air Opening Water In Out IPT TRE96 18 95 X 36 1 1 4 TRE120 18 95 X 36 1 1 2 TRE144 18 95 X 36 1 1 2 Condensate 1 1 1 Pipe Chase TRE096 144 Dimensional Data ...

Страница 7: ...1 9 7 climatemaster com Pipe Chase Optional Rain Hood Optional Rain Hood Service Access 3 5 1 1 m eters S e r v i c e A c c e s s 3 5 1 1 m e t e r s Top View of Base Size Outdoor Air Opening Water In Out TRE168 18 95 X 74 2 TRE240 18 95 X 74 2 Condensate 1 1 TRE168 240 Dimensional Data ...

Страница 8: ...ctobe r 7 2019 8 ClimateMaster Water Source Heat Pumps Standard Roof Curb Model A B C D E F TRE036 48 60 72 72 25 18 35 25 72 25 35 25 14 or 24 TRE096 120 144 82 25 21 41 25 82 25 41 25 14 or 24 TRE168 240 82 25 21 78 88 82 25 78 88 14 or 24 F dimension can be 14 or 24 ...

Страница 9: ...ter com Standard Curb with Vibration Isolation Model A B C D E F TRE036 48 60 72 72 25 18 35 25 72 25 35 25 14 or 24 TRE096 120 144 82 25 21 41 25 82 25 41 25 14 or 24 TRE168 240 82 25 21 78 88 82 25 78 88 14 or 24 F dimension can be 14 or 24 Note Finish height is 12 5 taller than the base curb height ...

Страница 10: ...E HEAT PUMPS Rooftop TRE Series R ev Octobe r 7 2019 10 ClimateMaster Water Source Heat Pumps Side Discharge Supply Return Roof Curb Model A B C TRE036 48 60 72 72 25 18 35 25 TRE096 120 144 82 25 21 41 25 TRE168 240 82 25 21 78 88 ...

Страница 11: ...RE Series Rev O c tober 7 2 0 1 9 11 climatemaster com Side Discharge Supply Return Isolation Curb Model A B C TRE036 48 60 72 72 25 18 35 25 TRE096 120 144 82 25 21 41 25 TRE168 240 82 25 21 78 88 Note Finish height is 12 5 taller than the base curb height ...

Страница 12: ...nd adequate access to the unit side panels and all electrical connections Follow these guidelines when installing the curb 1 Set unit on curb 2 Align unit so that return air and supply air in the unit match return and supply air opening in the curb frame 3 Run supply and return loop piping and electrical supply lines through the pipe chase provided in the curb Note Refer to previous pages for actu...

Страница 13: ...HP Pipe joint compound is not necessary when Teflon threaded tape is pre applied to hose assemblies or when flared end connections are used If pipe joint compound is preferred use compound only in small amounts on the male pipe threads of the fitting adapters Prevent sealant from reaching the flared surfaces of the joint Maximum allowable torque for brass fittings is 30 foot pounds If a torque wre...

Страница 14: ... temperature Chloride Levels 10 C 24 C 38 C Copper Cupronickel 20ppm NR NR 150 ppm NR NR 304 SS 400 ppm 250 ppm 150 ppm 316 SS 1000 ppm 550 ppm 375 ppm Titanium 1000 ppm 550 ppm 375 ppm Erosion and Clogging Particulate Size and Erosion All 10 ppm of particles and a maximum velocity of 1 8 m s Filtered for maximum 841 micron 0 84 mm 20 mesh size 10 ppm 1 ppm sandfree for reinjection of particles an...

Страница 15: ...of conductors Figure 2 illustrates a typical trap used with TRE Heat Pumps Multiple units within the same zone should be operated from a common temperature control Thermostat Wiring All wiring must comply with all applicable electrical codes including NEC and local codes Complete all wiring before units are installed Use multi conductor color coded low voltage cable for all wiring Refer to unit wi...

Страница 16: ...ng water temperatures below 60 F 15 6 C must include the optional water refrigerant circuit insulation package to prevent internal condensation Figure 17 LT1 Limit Setting Alarm Relay Comp Relay O Y2 W G C R AL1 24Vdc EH1 EH2 P6 Off On JW3 A OVR ESD C R NSB AL2 JW1 Acc1 Relay Acc2 Relay H COM NC1 NO1 COM NC2 NO2 P3 CO RV RV LT1 LT1 LT2 LT2 LP LP HP HP P7 Status Fault R R CC CCG CO S1 S2 1 12 1 4 F...

Страница 17: ...OFF OFF ON Humidifier ON ON OFF Outside air damper All other DIP combinations are invalid A slow closing valve may be required to help reduce water hammer Figure 18 shows typical wiring for a 24VAC external solenoid valve Figures 19 and 20 illustrate typical slow closing water control valve wiring for Taco 500 series ClimateMaster P N AVM and Taco SBV series valves Slow closing valves take approxi...

Страница 18: ...Valve Figure 19 AVM Valve Wiring Figure 20 Taco SBV Valve Wiring From Water Source IN OUT NOTE Shut off valves strainers and other required components not shown Solenoid Valve Flow Regulator To Discharge Stage 1 Stage 2 Figure 21 Two Stage Piping C C Termostato Y 1 2 3 Y AVM Taco Válvula Calentador Interruptor Unidad Empacada C C Aquastat Y1 1 2 3 Y1 AVM Taco Valve Heater Switch DXM2 Water Valve W...

Страница 19: ...4a Communicating Thermostat 24Vac Hot DXM2 24V Dehumidification Notes Auxiliary Heat 1 ECM automatic dehumidification mode operates with dehumidification airflows in the cooling mode when the dehumidification output from thermostat is active Normal heating and cooling airflows are not affected 2 DXM2 board DIP switch S2 7 must be in the auto dehumidification mode for automatic dehumidification 3 D...

Страница 20: ...37 0 50 H 208 3 60 197 254 D E 2 13 7 83 1 1 9 2 3 0 36 6 N A N A 40 0 50 F 460 3 60 414 506 A B C 2 6 2 41 0 1 3 1 2 0 15 5 N A N A 17 0 20 F 460 3 60 414 506 D E 2 6 2 41 0 1 4 3 3 0 16 7 N A N A 18 3 20 N 575 3 60 518 633 A B C 2 4 8 33 0 1 2 3 2 0 11 9 N A N A 13 1 15 N 575 3 60 518 633 D E 2 4 8 33 0 1 3 4 3 0 13 0 N A N A 14 2 15 TRE120 H 208 3 60 197 254 A B C 2 15 6 110 0 1 9 2 3 0 40 4 N ...

Страница 21: ...18 633 A B C 2 4 8 33 0 1 2 3 2 0 1 0 44 12 3 N A N A 13 5 15 N 575 3 60 518 633 D E 2 4 8 33 0 1 3 4 3 0 1 0 44 13 4 N A N A 14 6 15 TRE120 H 208 3 60 197 254 A B C 2 15 6 110 0 1 9 2 3 0 1 1 10 41 5 N A N A 45 4 60 H 208 3 60 197 254 D E 2 15 6 110 0 1 14 1 5 0 1 1 10 46 4 N A N A 50 3 60 F 460 3 60 414 506 A B C 2 7 8 52 0 1 4 3 3 0 1 0 55 20 5 N A N A 22 4 30 F 460 3 60 414 506 D E 2 7 8 52 0 ...

Страница 22: ...MPC1 Factory cut JW1 CXM or JW4 DXM jumper Dry Contact will be available between AL1 and Al2 Blower Motor Capacitor Alarm Relay Contacts Blower Motor Blower Relay Capacitor Circuit Breaker Compressor Relay AL BM BR CB CAP CR BMC HP High Pressure Switch Multi Splice Connector Jumper Wire Leaving Air Temperature Loss of Charge Pressure Switch High Pressure Water Switch Power Terminal Block HPWS LOC ...

Страница 23: ...THE SMART SOLUTION FOR ENERGY EFFI C I E NC Y Rooftop TRE Series Rev O c tober 7 2 0 1 9 23 climatemaster com Typical Wiring Diagram Units with LON DDC Option Auxiliary Diagram ...

Страница 24: ...CL IM A TEM ASTER WATER SOURCE HEAT PUMPS Rooftop TRE Series R ev Octobe r 7 2019 24 ClimateMaster Water Source Heat Pumps Typical Wiring Diagram Units with Economizer Option Auxiliary Diagram ...

Страница 25: ...THE SMART SOLUTION FOR ENERGY EFFI C I E NC Y Rooftop TRE Series Rev O c tober 7 2 0 1 9 25 climatemaster com Typical Wiring Diagram Single Compressor DXM2 ...

Страница 26: ...CL IM A TEM ASTER WATER SOURCE HEAT PUMPS Rooftop TRE Series R ev Octobe r 7 2019 26 ClimateMaster Water Source Heat Pumps Typical Wiring Diagram Typical Two Compressor Unit DXM2 ...

Страница 27: ...he cooling continuous fan or dehumidification modes Minimum entering air temperature while operating in the heating mode not continuous fan is the minimum entering air temperature for the standard model without the ClimaDry option in the heating mode Operating below these minimum entering air temperatures may result in nuisance faults NOTE 1 ALL UNITS COME STANDARD WITH DOUBLE ISOLATED COMPRESSOR ...

Страница 28: ...y supply air temperature be set to match the space cooling setpoint so that ClimaDry does not impact room temperature Competitors without ClimaDry II typically use an on off non modulating refrigeration based reheat circuit typically referred to as Hot gas reheat HGR HGR needs higher condensing temperatures to work well typically 85 F 29 C entering water temperature EWT With HGR cooler water tempe...

Страница 29: ...7 104 8 78 4 12 40 147 1 8 5 30 0 1 4 3 2 107 2 79 1 12 00 148 1 8 9 120 15 0 0 1 0 1 94 8 76 6 14 59 144 6 6 5 22 5 0 3 0 7 98 5 76 9 13 67 145 1 7 2 30 0 1 3 3 0 100 5 77 2 13 23 145 6 7 6 General Information With the ClimaDry II option return air from the space is cooled by the air to refrigerant evaporator coil and then reheated by the water to air reheat coil to dehumidify the air but maintai...

Страница 30: ...ssor contactor s and blower relay In the heating mode the reversing valve is de energized Almost any thermostat will activate the heat pump in heating or cooling modes The DXM2 microprocessor board which is required with the ClimaDry II option will accept either heat pump Y O thermostats or non heat pump Y W thermostats The reheat mode requires either a separate humidistat dehumidistat or a thermo...

Страница 31: ...y for the proportional control to drive the motorized valve during the reheat mode of operation The Motorized Valve is a proportional actuator three way valve combination used to divert the condenser water from the coax to the hydronic reheat coil during the reheat mode of operation The proportional controller signals the motorized valve based on the supply air temperature of the supply air sensor...

Страница 32: ... 27 0 28 0 26 425 0 30 0 28 0 30 0 28 450 0 31 0 29 0 32 0 29 475 0 33 0 31 500 0 35 0 32 525 0 37 550 0 38 575 0 40 Example Reheat coil loss can be determined from the above table Coil velocity FPM Airflow CFM Face Area sq ft 1 TRE036 has a face area of 5 sq ft see physical data table 2 At 1 500 cfm coil velocity FPM 1 500 5 300 FPM 3 From above table ESP is 22 4 TRE036 without reheat C Drive at ...

Страница 33: ...g this time After the valve has completed its shift use the air bleed from the top of the reheat coil to purge air from the coil Note if the ClimaDry sensor located in the supply air stream is above 70 F it must be disabled to allow the modulating valve to shift Disable this sensor by removing the white wire from the Low Voltage Terminal Block LVTB shown in figure 2 De energize the valve by removi...

Страница 34: ...nt Units are designed for roof mount or indoor installation Power Supply A voltage variation of 10 of nameplate utilization voltage is acceptable Determination of operating limits is dependent primarily on three factors 1 Return Air Temperature 2 Entering Water Temperature and 3 Ambient Temperature When any one of these factors is at minimum or maximum levels the other two factors must be at norma...

Страница 35: ...nd bleed off all air 10 Add antifreeze to the system in climates where ambient temperature falls below freezing using the proportion of antifreeze shown in Table 5 The volume of antifreeze required will vary based on outdoor design temperature 11 Test the system pH with litmus paper The system water should be slightly alkaline pH 7 5 to 8 5 Add chemicals as appropriate to maintain acidity levels 1...

Страница 36: ...e sheave on fan motor and open sheave to desired position Retighten set screw and replace belt and set belt tension as below Belt Tensioning An overly loose belt will upon motor start produce a slippage squeel and cause premature belt failure and or intermittent airflow An overly tight belt can cause premature motor or blower bearing failure Belt Tensioning Procedure TRE Blower motors for TRE mode...

Страница 37: ...nd read the forct applied from the bottom of the small O ring on the deflection force scale 6 Compare the force you have applied with the values given in the table below The force should be between the minimum and maximum shown The maximum value is shown for New Belt and new belts should be tensioned at this value to allow for expected tension loss Used belts should be maintained at the minimum va...

Страница 38: ... that the unit filter is clean Unit Fans Manually rotate fans to assure free rotation Ensure that fans are properly secured to the fan shaft Do not oil fan motors on start up since they are lubricated at the factory System Control Center To ensure control of the temperature set points for operation of the system s heat rejector and boiler when used examine the system control and alarm panel for pr...

Страница 39: ...3 13 3 13 11 21 10 20 8 18 15 21 10 14 7 11 11 15 15 19 14 20 Based on 15 Methanol antifreeze solution Note Rooftop heat pump units are designed to start heating at a minimum return air temperature of 40 F with normal water flow rate and ambient temperature a If the unit has a MCO thermostat set the temperature indicator to the highest setting and set the selector switch to HEAT The fan and the co...

Страница 40: ...stem failures complete the following checks and data entries before the system is put into full operation External Static Sheave Setting Turns Temperatures F or C Antifreeze Pressures PSIG or kPa Type Cooling Mode Heating Mode Entering Fluid Temperature Leaving Fluid Temperature Temperature Differential Return Air Temperature DB WB DB WB Supply Air Temperature DB WB DB WB Temperature Differential ...

Страница 41: ... To avoid fouled machinery and extensive unit cleanup do not operate units without filters in place Do not use equipment as a temporary heat source during construction WARNING WARNING When replacing the compressor contactor or lockout controls use only ClimateMaster replacement parts Substitution of other components may result in an inoperative safety circuit and may cause a hazardous condition FI...

Страница 42: ...suf cient or incorrect system design or the improper application of CM s products CM is not responsible for 1 The costs of any uids refrigerant or other system components or associated labor to repair or replace the same which is incurred as a result of a defective part covered by CM s Limited Express Warranty 2 The costs of labor refrigerant materials or service incurred in removal of the defecti...

Страница 43: ...THE SMART SOLUTION FOR ENERGY EFFI C I E NC Y Rooftop TRE Series Rev O c tober 7 2 0 1 9 43 climatemaster com Notes ...

Страница 44: ...Updated 06 09 11 All Incorporated ClimaDry II Information 01 03 11 Format All Pages Updated 10 21 10 Entire Document Added ClimaDry II Option 07 26 10 Wiring Diagrams Updated 06 11 10 Format All Pages Updated 01 11 10 First Published Revision History 97B0081N01 7300 S W 44th Street Oklahoma City OK 73179 Phone 405 745 6000 Fax 405 745 6058 climatemaster com 97B0081N01 ClimateMaster Inc 2009 Climat...

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