ClimateMaster Tranquility® Rooftop TRT Series3 – 6 Tons (10.6 kW – 21.1 kW) Owner's manual

Brand: ClimateMaster

Model: Tranquility® Rooftop TRT Series3 – 6 Tons (10.6 kW – 21.1 kW)

Type: Owner's manual

Rooftop (TRT) Series

Commercial Rooftop

Water-Source Heat Pumps

Installation, Operation

& Maintenance

LC1084

Rev.: April 23, 2020

Table of Contents

Model Nomenclature 3

General Information 4

TRE036 - 072 Dimensional Data 5

Standard Roof Curb 6

Standard Curb with Vibration Isolation 7

Side Discharge Supply & Return Roof Curb 8

Installation 9

Piping Installation 10

Water Quality Standards 11

Electrical Wiring 12

Electrical Low Voltage Wiring 13-14

Electrical Low Voltage Wiring non-vFlow 15

Electrical Thermostat Wiring 16

TWD - 036 to 072 17-18

TWD - Units with MPC DDC Auxiliary Diagram 19

TRT Sound Data 20

TRT Electrical Data Standard 21

TRT Electrical Data Climadry

II 22

BLower Motor VFD Controls 23-24

TRT Wiring Diagram Matrix 25

TRT Series Nomenclature 26

General Information 27-28

ClimaDry

II Sequence of Operation 29-30

TRT Blower Performance Data -

Units with ClimaDry

Flushing/Purging Units with ClimaDry

Unit Commissioning & Operating Conditions 33

Start-Up Preparation 34

Blower Adjustment 35

Tensioning V-Belt Drives 36

Unit System Checkout 37

Unit Start-up 38

Start-up Sheet Log 39

Preventive Maintenance 40

Warranty 41

Revision History 44

CLIMATEMASTER WATER-SOURCE HEAT PUMPS

Rooftop (TRT) Series

Rev.: April 23, 2020

ClimateMaster Water-Source Heat Pumps

This Page Intentionally Left Blank

THE SMART SOLUTION FOR ENERGY EFFICIENCY

Rooftop (TRT) Series

Rev.: April 23, 2020

climatemaster.com

Model Nomenclature

Curb (TRT & ERV Unit Nomenclature)

2 5

3 6 7

T R 0 3 6 HD 1C A A A A S

1 2 4 5 6 7 8

10 11 12 13 14 15

TRANQUILITY ROOFTOP UNIT

SERIES

UNIT SIZE

REVISION LEVEL

VOLTAGE

CONTROLS

CABINET & FILTER

HEAT EXCHANGER OPTIONS

A = NONE

AIR DAMPER OPTIONS

A = NONE

POWER TERMINATION

B = DISCONNECT

C = DISCONNECT + GFI OUTLET

STANDARD

036

048

060

072

096

120

144

168

C = CXM

BLOWER DRIVE PACKAGE

D = DXM

L = CXM w/LON

M = DXM w/LON

N = CXM w/MPC

P = DXM w/MPC

B = MANUAL ADJUSTABLE FRESH AIR DAMPER

S = STANDARD

240

ETL APPROVED

USA & CANADA

A = STANDARD RPM & STANDARD MOTOR

B = LOW RPM & STANDARD MOTOR

C = HIGH RPM & STANDARD MOTOR

D = STANDARD RPM & LARGE MOTOR

E = HIGH RPM & LARGE MOTOR

D = CIRCUIT BREAKER

E = CIRCUIT BREAKER + GFI OUTLET

C = MOTORIZED FRESH AIR DAMPER

OPTION

RANGE

2”, (50mm) FILTER

MERV 8

4”, (50mm) FILTER

MERV 8

4”, (100mm) FILTER

MERV 13

THROWAWAY FILTER OPTIONS

EXTENDED

RANGE

STANDARD

RANGE

YES NO NO

NO YES NO

NO NO YES

YES NO NO

NO YES NO

NO NO YES

F = MODULATING ENTHALPY ECONOMIZER

A = HOT GAS BYPASS

B-Z = SPECIALS

NON-COATED AIR COILS

COATED AIR COILS

STANDARD

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

CLIMADRY OPTION COMPONENTS

E = SINGLE STAGE COMPRESSOR(S)

COMPRESSOR TYPE

T = DUAL STAGE COMPRESSOR

TRE ONLY

F = VFD, VARIABLE FREQUENCY DRIVE

{

EFFECTIVE

DATE “TBD”

1 2 3 4

MODULATING VALVE

N = 575/60/3

D= CURRENT ALL SIZES

(EFFECTIVE 5/12/15)

F = 460/60/3

H = 208-230/60/3 (FACTORY WIRED 208)

G = 280-230/60/1

A C U R B A A A A

1 2 3 4 5

9 10 11 12

Model Type

TRE 036 - 072 Standard Curb = AAA

CURB TYPE and/or Cabinet Size

Curb Constructions

B = Standard 24” High - TRE, ERD, ERS

D = 14” High Curb for ERO Stand Alone ERV

E = 24” High Curb for ERO Stand Alone ERV

C = Horizontal Discharge/RH & LH (TRE Only)

Field Changeable - Supply and Return

TRE 168 - 240 Standard Curb =

Stand Alone 300 - 1000 cfm B =

Stand Alone 1200 - 2800 cfm D =

Stand Alone 1200 - 2000 cfm C =

Stand Alone 2000 - 3600 cfm E =

Stand Alone 3000 - 4600 cfm F =

Stand Alone 4600 - 6200 cfm G =

Stand Alone 6000 - 8000 cfm H =

Stand Alone 8000 - 1200 cfm J =

AAC

EVB

EVD

EVE

EVF

EVG

EVH

EVJ

EVC

TRE 096 -144 Standard Curb = AAB

Revision Level

G = Current Revision

A = Standard 14” High - TRE, ERD, ERS

R T

6 7

ACURB = Curb

Series Type

RT =

EV =

TRE Series

Stand alone ERV Series

Curb Options

B = Welded

C = Welded Vibration Isolation (TRE only)

A = Knocked Down

S = Standard

Not Used

Standard

Note: Horizontal curb adapter for TRE only.

End return RH or LH supply, field changable.

Fits on top of digit 12 option A or B.

Digit 13 can be option A or C.

CLIMATEMASTER WATER-SOURCE HEAT PUMPS

Rooftop (TRT) Series

Rev.: April 23, 2020

ClimateMaster Water-Source Heat Pumps

WARNING! To avoid equipment damage, do not use these

units as a source of heat during the construction process.

The mechanical components and lters used in these units

will quickly become clogged with construction dirt and debris

which may cause system damage.

WARNING! Some units may be charged with refrigerants

other than 410A and are so labeled. Use appropriate

refrigerant handling techniques. Mixing refrigerants in units

is dangerous and can cause equipment damage. To avoid

the release of refrigerant into the atmosphere, the refrigerant

circuit of this unit must only be serviced by technicians who

meet local, state and federal prociency requirements.

Inspection - Upon receipt of shipment at the job site,

carefully check the shipment against the bill of lading.

Make sure all units have been received. Inspect the carton

or crating housing of each Rooftop Unit and inspect each

unit for damage. Assure that the carrier makes proper

notation of any shortages or damage on all copies of the

freight bill and that he completes a Carrier Inspection Re-

port. Concealed damage not discovered during unloading

must be reported to the carrier within 15 days of receipt

of shipment. NOTE: It is the responsibility of the pur-

chaser to le all necessary claims with the carrier.

Storage - Upon the arrival of equipment at the job site,

immediately store units in a clean, dry area. Store units

in an upright position at all times. Stack unit model

numbers TRT-036 through TRT-120 no more than 2

units high. Do not stack units larger than model number

TRT-120. Do not remove equipment from pallets until

equipment is required for installation

Unit Protection - Cover rooftop units on the job site. Cap

the open ends of pipes. In areas where painting, plaster-

ing, roong, or the spraying of reproof material has not

been completed, all due precautions must be taken to

avoid physical damage to the units and contamination by

foreign material. Physical damage and contamination

may prevent proper start-up and may result in costly

equipment cleanup.

Pre-Installation - Installation, operation and maintenance

instructions are provided with each unit. Before unit start-

up, read all manuals and become familiar with the unit

and its operation. Thoroughly check out the system before

operation.

Prepare rooftop units for installation as follows:

1. Compare the electrical data on the unit nameplate with

ordering and shipping information to verify that the

correct unit has been shipped.

2. Select an installation site on the roof which allows

adequate clearance for maintenance and servicing

of the unit. A minimum of two feet of clearance is

required on all service access and drain connection

sides of the unit.

3. Verify that refrigerant tubing is free of kinks or dents,

and that it has not been damaged during shipping.

4. Examine all pipes, ttings, valves and components

before installing the system. Remove any dirt found

on or in these components and assure that all

components are securely tted.

5. Verify curb is proper size for unit. Install curb according

to manufacturer's instructions prior to installing unit.

6. Properly size supply and return duct work.

Mount

supply air duct to curb before installing unit.

General Information

� WARNING! �

� CAUTION! �

CAUTION! Supply air duct is inaccessible from inside unit

once unit is installed.

WARNING! The installation of water-source heat pumps and

all associated components, parts, and accessories which

make up the installation shall be in accordance with the

regulations of ALL authorities having jurisdiction and MUST

conform to all applicable codes. It is the responsibility of

the installing contractor to determine and comply with ALL

applicable codes and regulations.

� WARNING! �

THE SMART SOLUTION FOR ENERGY EFFICIENCY

Rooftop (TRT) Series

Rev.: April 23, 2020

climatemaster.com

Top View

of Base

Optional

Rain

Hood

rvice Ac

’

(

ters)

Ser

e Acce

’

mete

)

Size

Outdoor Air Opening

Water In/Out (IPT)

TRT36 12.57" X 30" 3/4"

TRT48 12.57" X 30" 3/4"

TRT60 12.57" X 30" 1"

TRT72 12.57" X 30" 1 1/4"

Condensate

1”

Optional

Rain

Hood

Pipe

Chase

TRT036 - 072 Dimensional Data

CLIMATEMASTER WATER-SOURCE HEAT PUMPS

Rooftop (TRT) Series

Rev.: April 23, 2020

ClimateMaster Water-Source Heat Pumps

Standard Roof Curb

Model A B C D E F*

TRT036/48/60/72

72.25” 18” 35.25”

72.25” 35.25” 14” or 24”

* “F” dimension can be 14” or 24”

THE SMART SOLUTION FOR ENERGY EFFICIENCY

Rooftop (TRT) Series

Rev.: April 23, 2020

climatemaster.com

Standard Curb with Vibration Isolation

Model A B C D E F*

TRT036/48/60/72

72.25” 18” 35.25”

72.25” 35.25” 14” or 24”

* “F” dimension can be 14” or 24”

Note: Finish height is 12.5" taller than the base curb height.

CLIMATEMASTER WATER-SOURCE HEAT PUMPS

Rooftop (TRT) Series

Rev.: April 23, 2020

ClimateMaster Water-Source Heat Pumps

Side Discharge Supply & Return Roof Curb

Model A B C

TRT036/48/60/72

72.25” 18” 35.25”

THE SMART SOLUTION FOR ENERGY EFFICIENCY

Rooftop (TRT) Series

Rev.: April 23, 2020

climatemaster.com

The installation of rooftop water-source heat pump units

and all associated components, parts and accessories

that make up the installation shall be in accordance with

the regulations of ALL authorities having jurisdiction

and MUST conform to all applicable codes. It is the

responsibility of the Installing Contractor to determine and

comply with ALL applicable codes and regulations.

Installation

Location, Access and Curb Installation -

Install curbs

with adequate clearance to allow unit maintenance and

servicing. Conform to the following guidelines when se-

lecting curb location.

1. Provide adequate clearance for lter replacement

and drain pan removal. Do not block lter access with

piping, conduit or other materials.

2. Provide access for fan and fan motor maintenance and

for servicing the compressor and coils without removal

of the unit.

3. Provide an unobstructed path to the unit to enable

removal of the unit if necessary.

4. Provide access to water valves and ttings, and

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 actual unit dimensions.

Figure 1: TRT Curb Installation

Gasket

Curb

TRT Series

Unit

Flashing

Roof

� CAUTION! �

CAUTION! All refrigerant discharged from this unit must

be recovered without exception. Technicians must follow

industry accepted guidelines and all local, state and federal

statutes for the recovery and disposal of refrigerants.

When a compressor is removed from this unit, system

refrigerant circuit oil will remain in the compressor. To

avoid leakage of compressor oil, the refrigerant lines of the

compressor must be sealed after it is removed.

Mineral oil or equipment exposed to mineral oil (manifold

gauges, vacuum pumps or hoses) cannot be used to service

units charged with 410A refrigerant and P.O.E. oil. HFC-410A

and P.O.E. oil are extremely hygroscopic (they absorb water

from air). Only P.O.E. oil that has been veried as moisture

free can be added to the system. Consult factory for more

information.

CLIMATEMASTER WATER-SOURCE HEAT PUMPS

Rooftop (TRT) Series

Rev.: April 23, 2020

ClimateMaster Water-Source Heat Pumps

2”

1.5”

* Some units include a painted drain connection.

Using a threaded pipe or similar device to clear

any excess paint accumulated inside this fitting

may ease final drain line installation.

1/8” Per

Foot

Condensate Piping -

Install a condensate trap at each

unit with the top of the trap positioned below the unit

condensate drain connection.

Design the length of the trap (water-seal) based upon

the amount of positive or negative pressure on the drain

pan. As a general rule, 1" of trap is required for each 1”

of negative pressure on the unit with a 1.5” (38 mm)

minimum. Each unit must be installed with a dedicated

trap for that unit.

Note that condensate may be allowed to drain onto the

roof.

Supply and Return Piping

Follow these piping guidelines.

1. Install a drain valve at the base of each supply and

return riser to facilitate system ushing.

2. Install shut-off/balancing valves and unions at each

unit to permit unit removal of unit, if required.

3. Place strainers at the inlet of each system circulating

pump. To ensure a clean system.

Always insulate where the piping runs through unheated

areas or outside the building. If loop temperature is

maintained between 60°F and 90°F, piping will not sweat

nor lose heat under normal ambient conditions. Otherwise,

insulation is required on loop water piping.

All loop piping above grade must be insulated on any unit

connected to an open or closed GeoThermal loop (GLHP,

GWHP).

Pipe joint compound is not necessary when Teon

threaded tape is pre-applied to hose assemblies or when

ared-end connections are used. If pipe joint compound

is preferred, use compound only in small amounts on the

male pipe threads of the tting adapters. Prevent sealant

from reaching the ared surfaces of the joint.

Maximum allowable torque for brass ttings is 30 foot-

pounds. If a torque wrench is not available, tighten

nger-tight plus one quarter turn. Tighten steel ttings as

necessary.

Figure 2: Condensate Drain

� WARNING! �

WARNING! Piping must comply with all applicable Codes.

� CAUTION! �

CAUTION! Corrosive system water requires corrosion-

resistant ttings and hoses and may require water treatment.

Piping Installation

Note: The manufacturer strongly recommends all

piping connections, both internal and external to the

unit, be pressure tested by an appropriate method

prior to any nishing of the interior space or before

access to all connections is limited. Test pressure may

not exceed the maximum allowable pressure for the

unit and all components within the water system.

The manufacturer will not be responsible or liable

for damages from water leaks due to inadequate or

lack of a pressurized leak test, or damages caused

by exceeding the maximum pressure rating during

installation.

WARNING! Polyolester Oil, commonly known as POE oil, is

a synthetic oil used in many refrigeration systems including

those with HFC-410A refrigerant. POE oil, if it ever comes

in contact with PVC or CPVC piping, may cause failure of

the PVC/CPVC. PVC/CPVC piping should never be used

as supply or return water piping with water source heat

pump products containing HFC-410A as system failures and

property damage may result.

� WARNING! �

THE SMART SOLUTION FOR ENERGY EFFICIENCY

Rooftop (TRT) Series

Rev.: April 23, 2020

climatemaster.com

Table 1: Water Quality Standards

Water Quality Standards

Water Quality

Parameter

Material

Closed

Recirculating

Open Loop and Recirculating Well

Scaling Potential - Primary Measurement

pH/Calcium Hardness

All

pH < 7.5 and Ca Hardness <100ppm

Method

Index Limits for Probable Scaling Situations -

(Operation outside these limits is not recommended)

Ryznar

All

- 6.0 - 7.5

Stability Index If >7.5 minimize steel pipe use.

Langelier

All

-0.5 to +0.5

Saturation Index

If <-0.5 minimize steel pipe use. Based upon 66°C HWG and

Direct well, 29°C Indirect Well HX

Iron Fouling

Iron Fe

(Ferrous)

All

<0.2 ppm (Ferrous)

(Bacterial Iron potential)

If Fe

(ferrous)>0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria.

Iron Fouling

All

<0.5 ppm of Oxygen

Above this level deposition will occur .

Corrosion Prevention

All

6 - 8.5

Monitor/treat as

needed

Minimize steel pipe below 7 and no open tanks with pH <8

Hydrogen Sulfide (H

All

- <0.5 ppm

At H

S>0.2 ppm, avoid use of copper and copper nickel piping or HX's.

Rotten egg smell appears at 0.5 ppm level.

Copper alloy (bronze or brass) cast components are OK to <0.5 ppm.

Ammonia ion as hydroxide, chloride,

nitrate and sulfate compounds

All

<0.5 ppm

Maximum

Maximum Allowable at maximum water temperature.

Chloride Levels

10°C 24°C 38

Copper

Cupronickel

- <20ppm NR NR

- <150 ppm NR NR

304 S

S - <400 ppm <250 ppm <150 ppm

316 S

S - <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 and a maximum

velocity of 1.8 m/s. Filtered for maximum 841 micron 0.84 mm,

20 mesh] size. Any particulate that is not removed can potentially

clog components.

Notes:

• NR - Application not recommended.

• "-" No design Maximum.

• Closed Recirculating system is identified by a

closed pressurized piping system.

• Recirculating open wells should observe the open recirculating design considerations.

Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below

Scaling indexes should be calculated at 66°C for direct use and HWG applications, and at 32°C for indirect HX use.

A monitoring plan should be implemented.

The ClimateMaster Water Quality Table provides water quality requirements for ClimateMaster coaxial heat exchangers. The water should be evaluated by an

independent testing facility comparing to this Table and when properties are outside of these requirements, an external secondary heat exchanger must be used to

isolate the heat pump heat exchanger from the unsuitable water. Failure to do so will void the warranty for the coaxial heat exchanger and any other components

damaged by a leak.

CLIMATEMASTER WATER-SOURCE HEAT PUMPS

Rooftop (TRT) Series

Rev.: April 23, 2020

ClimateMaster Water-Source Heat Pumps

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.

TRT 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 eld installed

electrical wiring. Unit terminals are not designed to accept

other types of conductors.

Figure 2 illustrates a typical trap used with TRT 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

efcient 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.

THE SMART SOLUTION FOR ENERGY EFFICIENCY

Rooftop (TRT) Series

Rev.: April 23, 2020

climatemaster.com

Electrical - Low Voltage Wiring

Thermostat Connections - The thermostat will be wired

to the DXM2 board located within the unit control box.

Refer to the unit wiring diagram for specic details.

Low Water Temperature Cutout Selection - The DXM2

control allows the eld selection of low water (or water-

antifreeze solution) temperature limit by clipping jumper

JW3, which changes the sensing temperature associated

with thermistor LT1. Note that the LT1 thermistor is

located on the refrigerant line between the coaxial heat

exchanger and expansion device (TXV). Therefore, LT1 is

sensing refrigerant temperature, not water temperature,

which is a better indication of how water ow rate/

temperature is affecting the refrigeration circuit.

The factory setting for LT1 is for systems using water

(30°F [-1.1°C] refrigerant temperature). In low water

temperature (extended range) applications with

antifreeze (most ground loops), jumper JW3 should be

clipped as shown in Figure 17 to change the setting to

10°F [-12.2°C] refrigerant temperature, a more suitable

temperature when using an antifreeze solution. All

ClimateMaster units operating with entering 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

AL1

24Vdc

EH1

EH2

Off On

JW3

OVR

ESD

NSB

AL2

JW1

Acc1

Relay

Acc2

Relay

COM

NC1

NO1

COM

NC2

NO2

LT1

LT2

Status

Fault

CCG

Factory Use

(240Vac)

Com

N.O.

Fan Enable

5 1/2"

6 1/2"

Use 4 mounting screws

#6 sheet metal screw 1” long

1.5

3/8” standoff

Factory low

voltage Molex

connection for

unit harness

Factory low

voltage Molex

connection for

electric heat

harness

Micro

Off On

COH

COM

AO2

P11

Gnd

P10

T2 T2 T3 T3 T4 T4

T6 T6

A0-1 A0-2

Off On

Relay

CCH

Relay

Test

B-

Gnd

A+ 24V

(240Vac)

Fan Speed

N.O.

N.C.

12V

OUT

Gnd

P12

Note: There is only

one T1 connection

1 2 3 4

1 2 3 4 5 6 7 8

AO1

Gnd

DXM2 PCB

JW3-LT1 jumper should be clipped for low temperature

(antifreeze) operation

Accessory Connections - A terminal paralleling the

compressor contactor coil has been provided on the DXM2

control. Terminal “A” is designed to control accessory

devices. Note: This terminal should be used only with 24

Volt signals and not line voltage. Terminal “A” is energized

with the compressor contactor.

The DXM2 controller includes two accessory relays ACC1

and ACC2. Each relay includes a normally open (NO) and

a normally closed (NC) contact. Accessory relays may be

congured to operate as shown in the tables below.

CLIMATEMASTER WATER-SOURCE HEAT PUMPS

Rooftop (TRT) Series

Rev.: April 23, 2020

ClimateMaster Water-Source Heat Pumps

Electrical - Low Voltage Wiring

Figure 18: Accessory Wiring

P2 Terminal Strip

Typical

Water

Valve

Accessory Relay 2 Conguration

Accessory Relay 1 Conguration

DIP 2.1 DIP 2.2 DIP 2.3 ACC1 Relay Option

ON ON ON Cycle with fan

OFF ON ON N/A for Residential Applications

ON OFF ON Water valve – Slow opening

ON ON OFF Outside air damper

OFF ON OFF ClimaDry option – Dehumidistat

OFF OFF OFF ClimaDry option – Humidistat

OFF OFF ON N/A for Residential Applications

ON OFF OFF N/A for Residential Applications

All other DIP combinations are invalid

DIP 2.4 DIP 2.5 DIP 2.6 ACC2 Relay Option

ON ON ON

Cycle with compressor

OFF ON ON

N/A for Residential Applications

ON OFF ON

Water valve – Slow opening

OFF OFF ON

Humidier

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 13 shows typical wiring for a

24VAC external solenoid valve. Figures 14 and 15

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 approximately

60 seconds to open (very little water will ow before

45 seconds). Once fully open, an end switch allows the

compressor to be energized. Only relay or triac based

electronic thermostats should be used with slow closing

valves. When wired as shown, the slow closing valve will

operate properly with the following notations:

1. The valve will remain open during a unit lockout.

2. The valve will draw approximately 25-35 VA through

the “Y” signal of the thermostat.

Note: This valve can overheat the anticipator of an

electromechanical thermostat. Therefore, only relay or

triac based thermostats should be used.

THE SMART SOLUTION FOR ENERGY EFFICIENCY

Rooftop (TRT) Series

Rev.: April 23, 2020

climatemaster.com

Electrical - Low Voltage Wiring for non-vFlow

Units Using External Motorized Water Valve

Figure 19: AVM Valve Wiring Figure 20: Taco SBV Valve Wiring

From Water Source

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

Termostato

AVM

Taco Válvula

Calentador Interruptor

Unidad Empacada

Aquastat

AVM

Taco Valve

Heater Switch

DXM2

Water Valve Wiring

CLIMATEMASTER WATER-SOURCE HEAT PUMPS

Rooftop (TRT) Series

Rev.: April 23, 2020

ClimateMaster Water-Source Heat Pumps

Thermostat Installation - The thermostat should be

located on an interior wall in a larger room, away from

supply duct drafts. DO NOT locate the thermostat in areas

subject to sunlight, drafts or on external walls. The wire

access hole behind the thermostat may in certain cases

need to be sealed to prevent erroneous temperature

measurement. Position the thermostat back plate against

the wall so that it appears level and so the thermostat

wires protrude through the middle of the back plate. Mark

the position of the back plate mounting holes and drill

holes with a 3/16” (5mm) bit. Install supplied anchors

and secure plate to the wall. Thermostat wire must be 18

AWG wire. Representative thermostat wiring is shown in

Figures 22a-b however, actual wiring connections should

be determined from the thermostat IOM and or unit wiring

diagram. Practically any heat pump thermostat will work

with ClimateMaster units, provided it has the correct

number of heating and cooling stages.

Electrical - Thermostat Wiring

Field Wiring

Factory Wiring

Figure 22a: Conventional 3 Heat / 2 Cool Thermostat

Connection to DXM2 Control

Thermostat

Connection to DXM2 Control

Compressor

Compressor Stage 2

Reversing Valve

Fan

24Vac Hot

24Vac Common

Fault LED

DXM2

Board

AL1

iGate

Thermostat

ATC

32U03C

Figure 24a: 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) DH connection not possible with units with internal variable speed pump. Use ATC32U03C.

4) Only use ATC Communicating Thermostat when using Humidiﬁer (H Input) in

units with internal variable speed pump.

Figure 24b: Conventional 3 Heat / 2 Cool Thermostat

Connection to DXM2 Control

Comm +

A+

Comm -

B-

GND

Outdoor

Sensor

(Optional)

Remote Indoor

Sensor

(Optional)

24Vac Common

Gnd

A+

Figure 22b: Communicating Thermostat Connection to

DXM2 Control

Thermostat

Connection to DXM2 Control

Compressor

Compressor Stage 2

Reversing Valve

Fan

24Vac Hot

24Vac Common

Fault LED

DXM2

Board

AL1

iGate

Thermostat

ATC

32U03C

Figure 24a: 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) DH connection not possible with units with internal variable speed pump. Use ATC32U03C.

4) Only use ATC Communicating Thermostat when using Humidiﬁer (H Input) in

units with internal variable speed pump.

Figure 24b: Conventional 3 Heat / 2 Cool Thermostat

Connection to DXM2 Control

Comm +

A+

Comm -

B-

GND

Outdoor

Sensor

(Optional)

Remote Indoor

Sensor

(Optional)

24Vac Common

Gnd

A+

THE SMART SOLUTION FOR ENERGY EFFICIENCY

Rooftop (TRT) Series

Rev.: April 23, 2020

climatemaster.com

Typical Wiring Diagram – Sizes 036 to 072,

DXM2 with Voltage G

CLIMATEMASTER WATER-SOURCE HEAT PUMPS

Rooftop (TRT) Series

Rev.: April 23, 2020

ClimateMaster Water-Source Heat Pumps

Typical Wiring Diagram – Sizes 036 to 072,

DXM2 with Voltage F, H

THE SMART SOLUTION FOR ENERGY EFFICIENCY

Rooftop (TRT) Series

Rev.: April 23, 2020

climatemaster.com

Typical Wiring Diagram - Units with MPC DDC Option, Auxiliary Diagram





























































MPC



ClimateMaster















 

POLARITY SENSITIVE

DDC COMM NETWORK























MPC2. Refer to MPC installation, application, and operation manual for

control wiring to the unit.





























































































TITLE:



PCN



DATE:



DRAWING NO.

REV



2. All wiring to the unit must comply with NEC and local codes

low voltage wiring shall be Class 2 or equivalent.

NOTES:

Multi Splice Connector

Low Pressure Switch

Relay contacts - N.O.

Relay contacts - N.C.

Optional Block

Capacitor

Field Low voltage Wiring

Field Line voltage Wiring

Printed Circuit Trace

Optional Wiring

Factory Low voltage Wiring

Factory Line Voltage Wiring



Mate-N-Lock

Optional



LED

Thermistor

Wire Nut

Temperature Switch

Relay / Contactor Coil

High Pressure Switch

Ground

Circuit Breaker

Condensate Pan

Splice Cap

Solenoid Coil



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

CAP

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

MSC

LAT

Fan Speed SwitchFSS

Sensor, low te

mp protection, air coil

Sensor, low temp protection, water coil

End Switch

Damper Motor

Condensate Overflow Sensor

Common Terminal Block

CTB

FP1

FP2

Field Wiring Terminal Block

Transformer

Modulating Water Valve

Start Assist Capacitor

Unit Mounted Thermostat

Return Air Sensor

TRANS

MOD

SAC

UMT

RAS

Reversing Valve Solenoid

RVS

Compressor Contractor CC

Discharge Temperature SwitchDTS

Motorized Water Valve

MWV

Manual StarterMS

Lock Out Relay

LOR

Domestic Hot WaterDHW

Heati

ng RelayHR

Potentiometer

POT

Terminal BlockTB

Power Distribution Block

PDB

Terminal StripTS

Current Sensor

Entering Water Temp SensorEWTS

Leaving Water Temp SensorLWTS





CLIMATEMASTER WATER-SOURCE HEAT PUMPS

Rooftop (TRT) Series

Rev.: April 23, 2020

ClimateMaster Water-Source Heat Pumps

TRT Sound Data

Model Mode

Ducted Discharge Octave Band Frequency, Hz.

Free Air Inlet Combined With Casing (Cabinet)

Radiated Octave Band

Frequency, Hz.

125 250 500 1000 2000 4000 8000 125 250 500 1000 2000 4000 8000

TRT036

Fan Only 55 50 37 33 34 36 34 64 51 48 48 41 47 40

Cooling: Full Load 61 52 47 47 45 42 38 75 64 58 54 54 54 45

Heating: Full Load 61 52 47 47 45 40 37 75 63 58 55 52 50 47

Cooling: Part Load 53 49 34 34 37 38 36 69 65 55 58 57 54 43

Heating: Part Load 53 46 36 32 30 33 35 69 65 56 53 48 46 44

TRT048

Fan Only 49 41 35 31 28 33 36 61 52 49 45 42 48 42

Cooling: Full Load 59 54 50 47 48 47 42 72 65 62 59 55 56 49

Heating: Full Load 59 53 49 47 46 44 40 72 63 60 56 53 55 48

Cooling: Part Load 52 43 37 33 31 33 35 67 64 57 54 50 49 43

Heating: Part Load 54 44 37 32 28 32 36 67 59 54 46 43 48 41

TRT060

Fan Only 51 40 33 32 31 34 35 60 53 50 53 46 46 40

Cooling: Full Load 60 52 46 40 40 43 38 69 62 58 57 54 54 46

Heating: Full Load 60 51 44 41 40 42 37 69 63 62 57 54 52 45

Cooling: Part Load 52 43 34 33 33 35 35 63 59 53 52 46 47 42

Heating: Part Load 53 44 32 31 30 33 35 63 61 55 52 45 46 42

TRT072

Fan Only 52 40 36 31 30 34 36 62 54 51 50 44 48 42

Cooling: Full Load 64 54 52 46 47 49 49 72 65 68 60 58 61 53

Heating: Full Load 64 54 50 46 46 48 41 72 64 64 60 57 60 51

Cooling: Part Load 53 42 37 31 31 35 35 65 60 56 56 49 53 50

Heating: Part Load 53 40 37 31 30 34 36 65 64 55 56 49 52 49

Tested in accordance with ARI 260

TRT comes standard w/mute construction

TRT Series Octave Band Sound Power Level

(dB re 1PW)

Standard 60 Hz Construction – Belt Drive Blower Motor + VFD

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ClimateMaster Tranquility® Rooftop TRT Series3 – 6 Tons (10.6 kW – 21.1 kW) Owner's manual

ClimateMaster Tranquility® Rooftop TRT Series3 – 6 Tons (10.6 kW – 21.1 kW) Owner's manual

ClimateMaster Tranquility® Rooftop TRT Series3 – 6 Tons (10.6 kW – 21.1 kW) Owner's manual

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