ClimateMaster TMW036 Owner's manual

Table of Contents
Model Nomenclature 3
Storage 5
Pre-Installation 5
Physical Data 6
Dimensional Data 7
Unit Installation 9
Piping Installation 9
Load Plumbing Installation 10
Water Loop Applications 11
Open Loop - Ground Water Systems 12
Water Quality Standards 12
Ground Loop Applications 14
Electrical - Line Voltage 15
Electrical - Low Voltage Wiring 16
Electrical - Accessories 17
Water Valve Wiring 17
TMW Series Wiring Diagram Matrix 18
Electrical Wiring Schematics 19
CXM/DXM Controls 25
CXM/DXM Safety Control Reset 28
Unit Commissioning and Operating Conditions 29
Piping System Cleaning & Flushing 30
Unit and System Checkout Procedure 31
Start Up Procedure 32
Preventive Maintenance 33
Warranties 34
Refrigeration Troubleshooting Form 35
Revision History 36
Tranquility®Modular
Water-to-Water
(TMW) Series
Water-Source Heat Pumps
50Hz-HFC-410A
Installation, Operation &
Maintenance
97B0059N05
Rev.: 02 January, 2013

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
2ClimateMaster Water-Source Heat Pumps
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
This Page Intentionally Left Blank

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Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Model Nomenclature
TM W A FU 1 0 C 0 C S
1 2 3 4 5 6 7
8
9101112131415
TM = TRANQUILITY
®
MEDIUMTEMPERATURE
MODEL TYPE
W = WATERTO WATER HEATPUMP
CONFIGURATION
UNIT SIZE
036
060
120
170
340
REVISION LEVEL
A = CURRENT
VOLTAGE
CONTROLS
1 = COMMERCIAL EXTENDED RANGE
CABINET INSULATION
2 = COMMERCIAL EXTENDED RANGE w/ULTRA QUIET
HOT WATER GENERATOR OPTIONS
C = Copper
SOURCE WATER COILOPTIONS
N = Cupro-nickel
C = Copper
LOAD WATER COILOPTIONS
N = Cupro-nickel
S = STANDARD
Z17
0=NONE (036-340)
2 =HOT WATER GENERATOR COIL (036-120 ONLY)
RESERVED - FUTURE OPTIONS
0 = NONE
V = 220-240/50/1
}
F = CXM
G = DXM
H = CXM w/LON
J = DXM w/LON
T = CXM w/MPC
U = DXM w/MPC
CE
MARKED
FOR EUROPE
340
U = 380-420/50/3

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
4ClimateMaster Water-Source Heat Pumps
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
General Information
 WARNING! 
 WARNING! 
 CAUTION! 
CAUTION! To avoid equipment damage, DO NOT use
these units as a source of heating or cooling during the
construction process. The mechanical components and
filters will quickly become clogged with construction dirt
and debris, which may cause system damage.
WARNING! To avoid the release of refrigerant into the
atmosphere, the refrigerant circuit of this unit must be
serviced only by technicians who meet local, state, and
federal proficiency requirements.
Safety
Warnings, cautions, and notices appear throughout this
manual. Read these items carefully before attempting
any installation, service, or troubleshooting of the
equipment.
DANGER: Indicates an immediate hazardous situation,
which if not avoided will result in death or serious
injury. DANGER labels on unit access panels must be
observed.
WARNING: Indicates a potentially hazardous situation,
which if not avoided could result in death or serious
injury.
CAUTION: Indicates a potentially hazardous situation
or an unsafe practice, which if not avoided could result
in minor or moderate injury or product or property
damage.
NOTICE: Notification of installation, operation, or
maintenance information, which is important, but which
is not hazard-related.
WARNING! 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. If a compressor is removed from this unit,
refrigerant circuit oil will remain in the compressor. To
avoid leakage of compressor oil, refrigerant lines of the
compressor must be sealed after it is removed.

THE SMART SOLUTION FOR ENERGY EFFICIENCY
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Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Inspection
Upon receipt of the equipment, carefully check the
shipment against the bill of lading. Make sure all units
have been received. Inspect the carton or crating of
each unit, and inspect each unit for damage. Assure
the carrier makes proper notation of any shortages or
damage on all copies of the freight bill and completes a
common carrier inspection report. Concealed damage
not discovered during unloading must be reported to
the carrier within 15 days of receipt of shipment. If not
filed within 15 days, the freight company can deny the
claim without recourse. Note: It is the responsibility of
the purchaser to file all necessary claims with the carrier.
Notify the ClimateMaster Traffic Department of all
damage within fifteen (15) days of shipment.
Storage
Equipment should be stored in its original packaging in
a clean, dry area. Store units in an upright position at all
times. Do not stack TMW170 or 340. The stack limit for
TMW036, 060 and 120 is three.
Unit Protection
Cover units on the job site with either shipping
packaging, vinyl film, or an equivalent protective
covering. Cap the open ends of pipes stored on the
job site. In areas where painting, plastering, and/or
spraying 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 clean-up.
Examine all pipes, fittings, and valves before installing
any of the system components. Remove any dirt or trash
found in or on these components.
Pre-Installation
Installation, Operation, and Maintenance instructions
are provided with each unit.. The installation site chosen
should include adequate service clearance around the
unit. Before unit start-up, read all manuals and become
familiar with the unit and its operation. Thoroughly check
the system before operation.
Prepare 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. Keep the cabinet covered with the shipping
packaging until installation is complete and all
plastering, painting, etc. is finished.
3. Verify refrigerant tubing is free of kinks or dents and
that it does not touch other unit components.
4. Inspect all electrical connections. Connections must
be clean and tight at the terminals.
 CAUTION! 
 CAUTION! 
 CAUTION! 
CAUTION! CUT HAZARD - Failure to follow this caution
may result in personal injury. Sheet metal parts may have
sharp edges or burrs. Use care and wear appropriate
protective clothing, safety glasses and gloves when
handling parts and servicing heat pumps.
CAUTION! DO NOT store or install units in corrosive
environments or in locations subject to temperature or
humidity extremes (e.g., attics, garages, rooftops, etc.).
Corrosive conditions and high temperature or humidity can
significantly reduce performance, reliability, and service life.
Always move and store units in an upright position. Tilting
units on their sides may cause equipment damage.
CAUTION! All three phase scroll compressors must have
direction of rotation verified at start-up. Verification is
achieved by checking compressor Amp draw. Amp draw
will be substantially lower compared to nameplate values.
Additionally, reverse rotation results in an elevated sound
level compared to correct rotation. Reverse rotation will
result in compressor internal overload trip within several
minutes. Verify compressor type before proceeding.

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
6ClimateMaster Water-Source Heat Pumps
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Unit Physical Data
Model 036 060 120 170 340
Compressor (qty) Scroll (1) Scroll (2) Scroll (1) Scroll (2)
Factory Charge HFC-410A kg per circuit 2.04 2.83 6.8
Water Connection Size
Source/Load (in) 3/4 1 1-1/2 2
Hot Water Generator FPT (in) ½N/A
Weight - Operating kg 158 163 329 329 604
Weight - Packaged kg 169 175 349 347 608
Water Volume (Source)
Liters 3.64 5.04 10.02 13.27 25.44
Dual isolated compressor mounting
Balanced port expansion valve (TXV)
Insulated Source and Load Water Coils standard
Insulated Refrigerant Circuit standard
Compressor on (green) and fault (red) light
FPT - Female Pipe Thread
Unit Maximum Water Working Pressure
Options Max Working Pressure [kPa]
Base Unit 2,068

THE SMART SOLUTION FOR ENERGY EFFICIENCY
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climatemaster.com
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
TMW036 - 120 - Unit Dimensional Data
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Notes:
1. Front & side access is preferred for service
access. However, all components may be
serviced from the front access panel if side
access is not available.
2. While clear access to all removable panels
is not required, installer should take care
to comply with all building codes and allow
adequate clearance for future field services.
Water to
Water
Overall Cabinet Water Connections Electric Access Plugs
123 456
A
Depth B Width C Height
D
Source
(Outdoor)
Water In
E
Source
(Outdoor)
Water Out
F
Load
(Indoor)
Water In
G
Load
(Indoor)
Water Out
H
HWG
Water In
J
HWG
Water
Out
K
Low
Voltage
L
External
Pump
M
Power
Supply
036-060 cm. 77.8 64.5 83.8 6.9 23.9 49.3 62.2 70.9 77.2 53.1 58.2 78.5
120 cm. 77.8 134.4 94 64.0 64.0 76.5 76.5 88.6 88.6 75.9 81.0 87.4

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
8ClimateMaster Water-Source Heat Pumps
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
TMW170 & 340 - Unit Dimensional Data
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THE SMART SOLUTION FOR ENERGY EFFICIENCY
9
climatemaster.com
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Unit Installation
Installation of 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 flushing.
2. Install shut-off / balancing valves and unions at
each unit to permit unit removal for servicing.
3. Place strainers at the inlet of each system
circulating pump.
4. Select the proper hose length to allow slack
between connection points. Hoses may vary in
length by +2% to -4% under pressure.
5. Exceeding the minimum bend radius may cause
the hose to collapse which reduces water flow rate.
Install an angle adapter to avoid sharp bends in
the hose when the radius falls below the required
minimum and causes a slight kink.
PIPING INSTALLATION
Insulation is not required on loop water piping
except where the piping runs through unheated
areas or outside the building or when the loop water
temperature is below the minimum expected dew
point of the pipe ambient temperature. Insulation is
required if loop water temperature drops below the
dew point.
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 pipe threads of the fitting adapters.
Prevent sealant from reaching the flared surfaces of
the joint.
Note: When antifreeze is used in the loop, assure
that it is compatible with Teflon tape or pipe joint
compound employed.
Maximum allowable torque for brass fittings is
41 N-m. If a torque wrench is not available, tighten
finger-tight plus one quarter turn. Tighten steel
fittings as necessary.
TMW Unit Location
These units are not designed for outdoor installation.
Locate the unit in an INDOOR area that allows
enough space for service personnel to perform typical
maintenance or repairs.
The installation of water source heat pump
units 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.
Locate the unit in an indoor area that allows easy
removal of access panels, and has enough space for
service personnel to perform maintenance or repair.
Provide sufficient room to make water and electrical
connections.. Any access panel screws that would be
difficult to remove after the unit is installed should be
removed prior to setting the unit. These units are not
approved for outdoor installation and, therefore, must
be installed inside the structure being conditioned. Do
not locate in areas where ambient conditions are not
maintained within 4-38°C.
 WARNING! 
WARNING! Piping must comply with all applicable codes.
 WARNING! 
WARNING! Do not bend or kink supply lines or hoses.

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
10 ClimateMaster Water-Source Heat Pumps
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Piping Installation
TMW Unit Load Plumbing
The applications are too varied to describe in this
document. However, some basic guidelines will be
presented. Much of the discussions on water loop
applications would be valid for the load plumbing
discussion as well. All plumbing should conform to local
codes with the following considerations:
Wide temperature variation applications such as
heating/cooling coils:
- Employ piping materials that are rated for the
maximum temperature and pressure combination.
This excludes PVC for most heating applications.
- Insure that load water flow in high temperature
heating applications is at least 3.2 l/m per kW
to improve performance and reduce nuisance high
pressure faults.
- DO NOT employ plastic to metal threaded joints
- Utilize a pressure tank and air separator vent system
to equalize pressure and remove air..
Swimming Pool Hot Tub Applications:
- Load side heat exchanger should be isolated with
secondary heat exchanger constructed of anti-
corrosion material in all chlorine/bromine fluid
applications.
Potable Water Applications:
- Load side heat exchanger should be isolated with
secondary heat exchanger for use in potable water
systems.
- Insure load water flow in high temperature heating
applications is at least 3.2 l/m per kW to improve
performance and reduce nuissance to high pressure
faults.
LOAD PLUMBING INSTALLATION
Optional pressure-rated hose assemblies designed
specifically for use with ClimateMaster units are available.
Similar hoses can be obtained from alternate suppliers.
Supply and return hoses are fitted with swivel-joint fittings
at one end to prevent kinking during installation.
 CAUTION! 
CAUTION! Corrosive system water requires corrosion
resistant fittings and hoses and possibly water treatment.
Figure 1: Supply/Return Hose Kit
Rib Crimped
Length
(0.6m Length Standard)
Swivel
Brass
Fitting
Brass
Fitting
MPT
MPT
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 finishing 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.
Refer to Figure 1 for an illustration of a Supply/Return
Hose Kit. Male adapters secure hose assemblies to the
unit and risers. Install hose assemblies properly and
check them regularly to avoid system failure and reduced
service life.
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
11
climatemaster.com
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Water-Loop Heat Pump Applications
Commercial systems typically include a number of
units plumbed to a common piping system. Any unit
plumbing maintenance work can introduce air into the
piping system, therefore air elimination equipment is
a major portion of the mechanical room plumbing. In
piping systems expected to utilize water temperatures
below 10°C, 13mm closed cell insulation is required on
all piping surfaces to eliminate condensation. Metal to
plastic threaded joints should never be employed due
to their tendency to leak over time. Teflon tape thread
sealant is recommended for FPT water connections
(commercial class) to minimize internal fouling of the heat
exchanger. Do not overtighten connections and route
piping so as not to interfere with service or maintenance
access. Hose kits are available from ClimateMaster in
Figure 2 for connection between the TMW unit and the
piping system. The hose kits include shut off valves, P/T
plugs for performance measurement, high pressure
stainless steel braid hose, "Y" type strainer 20 mesh
(841 micron) [0.84mm]) with blowdown valve, and "J"
type swivel connection. Balancing valves to facilitate
the balancing of the system, may also be included in
the hose kit. The piping system should be flushed to
remove dirt, piping chips, and other foreign material
prior to operation. See Piping System Cleaning and
Flushing Procedures later in this document. The flow
rate is usually set between 2.4 l/m and 3.2 l/m per kW
of cooling capacity. ClimateMaster recommends 2.7
l/m per kW for most applications of water loop heat
pumps. To insure proper maintenance and servicing,
P/T ports are imperative for temperature and flow
verification, as well as performance checks.
Cooling Tower/Boiler Systems typically utilize a
common loop maintained between 16-32°C. The use
of a closed circuit evaporative cooling tower with a
secondary heat exchanger between the tower and the
water loop is recommended. If an open type cooling
tower is used continuously, chemical treatment and
filtering will be necessary.
Low Water Temperature Cutout Setting
CXM or DXM Control: When an antifreeze is selected,
the FP1 jumper (JW3) should be clipped to select the
low temperature 12°C setpoint to avoid nuisance faults.
See Figure 4: Low Water Temperature Cutout - FP1.
Figure 2: Typical Water Loop Application
Load Connections
(Hot Water/Chilled Water)
Source Connections
Power Disconnect

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
12 ClimateMaster Water-Source Heat Pumps
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Ground-Water Heat Pump Applications
Typical open loop piping is shown in Figure 3. Shut off valves
should be included in case of servicing. Boiler drains or other
valves should be ‘tee’d’ into the line to allow acid flushing of
just the heat exchanger. Pressure temperature plugs should
be used so that flow and temperature can be measured.
Water quantity should be plentiful and of good quality.
Consult Table 1 for water quality guidelines. The unit can
be ordered with either a copper or cupro-nickel water heat
exchanger. Copper is recommended for closed loop systems
and open loop ground water systems that are not high in
mineral content or corrosiveness. In conditions anticipating
heavy scale formation or in brackish water, a cupro-nickel
heat exchanger is recommended.
In ground water situations where scaling could be heavy or
where biological growth such as iron bacteria will be present,
a closed loop system is recommended. It is recommended
to install an intermediate heat exchanger to isolate an open
loop from the heat pump loop on open well systems. Heat
exchangers may over time lose heat exchange capabilities
due to a build up of mineral deposits inside. These can be
cleaned only by a qualified service mechanic as acid and
special pumping equipment are required.
Table 1: Water Quality Standards
Water Quality
Parameter HX 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 2+ (Ferrous) All -<0.2 ppm (Ferrous)
(Bacterial Iron potential) If Fe2+ (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
pH All 6 - 8.5 6 - 8.5
Monitor/treat as
needed Minimize steel pipe below 7 and no open tanks with pH <8
Hydrogen Sulfide (H2S) All - <0.5 ppm
At H2S>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$C24$C38
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 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:
Rev.: 5/6/2014 S
• 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.
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
13
climatemaster.com
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Ground-Water Heat Pump Applications
In areas with extremely hard water, the owner should
be informed that the heat exchanger may require
occasional acid flushing.
Expansion Tank and Pump
Use a closed, bladder-type expansion tank to minimize
mineral formation due to air exposure. The expansion
tank should be sized to handle at least one minute run
time of the pump to prevent premature pump failure
using its drawdown capacity rating. Discharge water
from the unit is not contaminated in any manner and
can be disposed of in various ways depending on local
building codes; i.e. recharge well, storm sewer, drain
field, adjacent stream or pond, etc. Most local codes
forbid the use of sanitary sewer for disposal. Consult
your local building and zoning department to assure
compliance in your area.
Low Water Temperature Cut-Out Setting
For all open loop systems the -1°C FP1 setting (factory
setting-water) should be used to avoid freeze damage
to the unit. See Figure 4: “Low Water Temperature
Cutout - FP1”.
NOTICE! Low temperature limit system will not
allow leaving load water temperature (cooling
mode) or leaving source water temperature
(heating mode) to be below 5.6 ° C.
Water Control Valve
Note the placement of the water control valve. Always
maintain water pressure in the heat exchanger by
placing water control valves at the outlet of the unit to
prevent mineral precipitation. Pilot operated or Taco
slow closing valve’s solenoid valves are recommended
to reduce water hammer. If water hammer persists, a
mini-expansion tank can be mounted on the piping to
help absorb the excess hammer shock. Insure that the
total ‘VA’ draw of the valve can be supplied by the unit
transformer. For instance the Taco slow closing valve
can draw up to 35VA. This can overload smaller 40 or
50 VA transformers depending on the other controls
employed. A typical pilot operated solenoid valve
draws approximately 15VA.
Flow Regulation
Flow regulation can be accomplished by two methods.
First, most water control valves have a built in flow
adjustment. By measuring the pressure drop through
the unit heat exchanger, flow rate can be determined
and compared to Tables 7 and 8. Since the pressure
is constantly varying, two pressure gauges might be
needed. Simply adjust the water control valve until the
desired flow of 1.6 l/m and 2.2 l/m per kW is achieved.
Secondly, a flow control device may be installed. The
devices are typically an orifice of plastic material that
is designed to allow a specified flow rate. These are
mounted on the outlet of the water control valve. On
occasion, these valves can produce a velocity noise
that can be reduced by applying some back pressure.
This is accomplished by slightly closing the leaving
isolation valve of the ground water setup.
WARNING! Never jumper terminal “A” from CXM or DXM
board #1 to CXM or DXM board #2 on multi-compressor/
control bound units. See Figure 5 in electrical section of this
document for motorized valve wiring.
Air Pad or
Extruded
polystyrene
insulation board
Unit Power
Disconnect
Pressure
Tank
Flow
Regulator
Water
Control
Valve
P/T Plugs
Water Out
Shut-Off
Valve
Boiler
Drains
Water In
Optional
Filter
Thermostat Wiring
Figure 3: Typical Ground-Water Application
 WARNING! 

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
14 ClimateMaster Water-Source Heat Pumps
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Ground-Loop Heat Pump Applications
Pre-Installation
Prior to installation, locate and mark all existing
underground utilities, piping, etc. Install loops for new
construction before sidewalks, patios, driveways, and other
construction has begun. During construction, accurately
mark all ground loop piping on the plot plan as an aid in
avoiding potential future damage to the installation.
Piping Installation
All earth loop piping materials should be limited to only
polyethylene fusion for inground sections of the loop.
Galvanized or steel fitting should not be used at any time due
to their tendency to corrode. All plastic to metal threaded
fittings should be avoided due to their potential to leak in
earth coupled applications and a flanged fitting substituted.
P/T plugs should be used so that flow can be measured
using the pressure drop of the unit heat exchanger in lieu of
other flow measurement means. Earth loop temperatures
can range between -4 to 43°C, and 2.4 l/m to 3.2 l/m per kW
of cooling capacity is recommended in these applications.
Upon completion of the ground loop piping, pressure test
the loop to assure a leak free system. Horizontal Systems: Test
individual loops as installed. Test entire system when all loops
are assembled. Vertical U-Bends and Pond Loop Systems:
Test Vertical U-bends and pond loop assemblies prior to
installation with a test pressure of at least 689 kPa.
Flushing the Earth Loop
Upon completion of system installation and testing, flush the
system to remove all foreign objects and purge to remove
all air. Flush the loop first with the unit isolated to avoid
flushing debris from the loop into the unit heat exchanger.
Table 2: Antifreeze Percentages by Volume
Antifreeze
In areas where minimum entering loop temperatures
drop below 5°C or where piping will be routed through
areas subject to freezing, anti-freeze is needed. Alcohols
and glycols are commonly used as antifreezes, however
your local sales manager should be consulted for the
antifreeze best suited to your area. Freeze protection
should be maintained to 9°C below the lowest expected
entering loop temperature. For example, if -1°C is the
minimum expected entering loop temperature, the
leaving loop temperature would be -4 to -6°C and
freeze protection should be at -10°C e.g. -1°C - 9°C =
-10°C. All alcohols should be premixed and pumped
from a reservoir outside of the building when possible
or introduced under water level to prevent fuming.
Initially calculate the total volume of fluid in the piping
system. Then use the percentage by volume shown
in Table 2 for the amount of antifreeze. Antifreeze
concentration should be checked from a well mixed
sample using a hydrometer to measure specific gravity.
 CAUTION! 
CAUTION! The following instructions represent industry
accepted installation practices for Closed Loop Earth
Coupled Heat Pump Systems. They are provided to assist
the contractor in installing trouble free ground loops. These
instructions are recommendations only. State and Local
Codes MUST be followed and installation MUST conform
to ALL applicable Codes. It is the responsibility of the
Installing contractor to determine and comply with ALL
applicable Codes and Regulations.
Type Minimum Temperature for Low Temperature Protection
-12.2°C -9.4°C -6.7°C -3.9°C
Methanol 25% 21% 16% 10%
100% USP food grade Propylene Glycol 38% 25% 22% 15%
Ethanol* 29% 25% 20% 14%
* Must not be denatured with any petroleum based product
Low Water Temperature Cut-Out Setting
CXM or DXM Control:
When an antifreeze is selected, the FP1 jumper [JW3]
should be clipped to select the low temperature
12.2°C setpoint to avoid nuisance faults. See Figure 4.

THE SMART SOLUTION FOR ENERGY EFFICIENCY
15
climatemaster.com
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Ground-Loop Heat Pump Applications
Electrical - Line Voltage
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.
TMW Power Connection
Line voltage connection is made by connecting the
incoming line voltage wires to the power distribution
block. Consult electrical data table for correct fuse
size.
Transformer
On dual voltage units, the installer must confirm that the
power supply and unit transformer wiring match. Installer
must rewire as needed. Refer to the unit wiring diagram
for proper connections.
 CAUTION! 
CAUTION! Use only copper conductors for field installed
electrical wiring. Unit terminals are not designed to accept
other types of conductors.
Figure 3a: Typical Ground-Loop Application
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CLIMATEMASTER WATER-SOURCE HEAT PUMPS
16 ClimateMaster Water-Source Heat Pumps
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Electrical - Line Voltage
TMW Electrical Data
ELECTRICAL - LOW VOLTAGE
Thermostat Connections
The aquastat/thermostat should be wired directly to
the CXM/DXM board #1. Note: The TMW second
stage is wired directly to the CXM #2.
Low Water Temperature Cutout - FP1
The CXM/DXM control allows the field selection of
source fluid low temperature cutout points. The factory
setting of FP1 is set for water -1°C. In cold temperature
applications jumper JW3 should be clipped as shown
in Figure 4 to change the setting to -12.2°C, a more
suitable temperature when using antifreezes. Never
clip JW3 prior to antifreeze being added to the loop.
Figure 4: Changing FP1-Low Water Temperature
Cutout Setpoint
CXM PCB
JW3-FP1 jumper
should be
clipped when
antifreeze is
used.
Model Voltage
Code Voltage Voltage Min/Max
Compressor Total
Unit
FLA
Min
Circuit
Amps
Max
Fuse
QTY RLA LRA
TM036 V 220-240/50/1 198/264 1 13.5 67 13.5 16.9 30
U 380-420/50/3 342/462 1 5.4 38 5.4 6.8 15
TMW060 V 220-240/50/1 198/264 1 24.5 153 24.5 30.6 50
U 380-420/50/3 342/462 1 9.6 74 9.6 12.0 20
TMW120 V 220-240/50/1 198/264 2 24.5 153 49.0 55.1 79.6
U 380-420/50/3 342/462 2 9.6 74 19.2 21.6 30
TMW170 V 220-240/50/3 198/264 1 44.9 273 44.9 56.1 100
U 380-420/50/3 342/462 1 18.6 118 18.6 23.3 40
TMW340 V 220-240/50/3 198/264 2 44.9 273 89.8 101 125
U 380-420/50/3 342/462 2 18.6 118 37.2 46.6 60
All field installed wiring, including electrical ground,
must comply with all applicable local codes.
Refer to the unit wiring diagrams for a schematic of the
field connections which must be made by the installing
(or electrical) contractor.
Consult the unit wiring diagram located on the inside
of the compressor access panel to ensure proper
electrical hookup. All final electrical connections must
be made with a length of flexible conduit to minimize
vibration and sound transmission to the building.
 WARNING! 
WARNING! To avoid possible injury or death due to
electrical shock, open the power supply disconnect switch
and secure it in an open position during installation.
 WARNING! 
WARNING! Disconnect electrical power source to prevent
injury or death from electrical shock.

THE SMART SOLUTION FOR ENERGY EFFICIENCY
17
climatemaster.com
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
CXM/DXM, LonWorks, or MPC Control Operation
Note: See CXM AOM (part #97B0003N12), DXM AOM (part #97B0003N13), Lon Controller AOM (part
#97B0013N01) or MPC Controller AOM (part #97B0031N01) on the web at climatemaster.com
Figure 5: Field Wiring of 24 Volt Motorized Valve for Units Size 120 and 340
Electrical - Accessories
Coil
VR 1
68
Refrigerant
HP Switch
Circuit #1
VR3
NO
RED RED
Coil
Valve
Relay 3
Water
High Pressure
Switch NC
Notes - Disconnect red wire at refrigerant HP switch connect to N.O. contact,
connect new red wire from N.O. contact to refrigerant HP switch.
Valve Relay 1, 2 - 13B0001N01 (SPDT) VR1, VR2
Valve Relay 3 - 13B0004N01 (DPDT) VR3
Coil
68
Refrigerant
HP Switch
Circuit #1
VR3
NO
RED RED
Coil
Valve
Relay 3
Water
High Pressure
Switch NC
Coil
VR2
24
Refrigerant
HP Switch
Circuit #2
VR3
NO
RED RED
,
24
Refrigerant
HP Switch
Circuit #2
VR3
NO
RED RED
WARNING! Never jumper terminal “A” from CXM or DXM
board #1 to CXM or DXM board #2 on multi-compressor/
control bound units. See Figure 5 in electrical section of this
document for motorized valve wiring.
Accessory Connections
A terminal paralleling the compressor contactor coil
has been provided on the CXM/DXM control of the
TMW line. "A" has been provided to control accessory
devices, such as water valves, electronic air cleaners,
humidifiers, etc. Note: This terminal must be used
only with 24 Volt signals and not line voltage signals.
24 Volt Accessory Wiring
These terminals may
be used to power 24
volt water valves on
units size 036, 060,
170. See Figure 5 for
water valve wiring on
unit sizes 120 and 340.
CXM/DXM Terminal Strip
 WARNING! 

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
18 ClimateMaster Water-Source Heat Pumps
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
TMW Series Wiring Diagram Matrix
Model Refrigerant Wiring Diagram
Part Number Electrical Control DDC Agency
TMW036-060
EarthPure©
HFC-410A
96B0116N05 380-420/50/3 CXM
-
CE
LON
MPC
96B0116N10 380-420/50/3 DXM
-
LON
MPC
TMW120
96B0117N03 380-420/50/3 CXM
-
LON
MPC
96B0117N06 380-420/50/3 DXM
-
LON
MPC
TMW340
96B0107N07
380-420/50/3
CXM
-
96B0107N08 LON
96B0107N09 MPC
96B0107N10
DXM
-
96B0107N11 LON
96B0107N12 MPC
TMW170
96B0112N07
380-420/50/3
CXM
-
96B0112N08 LON
96B0112N09 MPC
96B0112N10
DXM
-
96B0112N11 LON
96B0112N12 MPC
Diagrams may be downloaded at climatemaster.com

THE SMART SOLUTION FOR ENERGY EFFICIENCY
19
climatemaster.com
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Typical Wiring Diagram

CLIMATEMASTER WATER-SOURCE HEAT PUMPS
20 ClimateMaster Water-Source Heat Pumps
Tranquility®Modular Water-to-Water (TMW )Series
Rev.: 02 January, 2013
Typical Wiring Diagram