Nibe CLIMATEMASTER Tranquility TFC Series Guide

97B0091N01
TFC 036-060
Installation, Operation &
Maintenance Instructions
Created: February 22, 2022
Tranquility® Fluid Coolers
(TFC) Series IOM
Table of Contents
Model Nomenclature: for Fluid Cooler 3
Safety 4
General Information 5
Unit Physical Data 6
Dimensional Data 7
Unit Application and Fluid Connections 8-10
Installation 11-12
Flushing the Loop 13-15
Loop Antifreeze Protection 16-17
Optional Internal Pump 18
Water Quality Standards 19-20
Earth Ground Resistance Measurement 21
Electrolysis Voltage and Current 22
Electrical – Line Voltage 23
Electrical – Field Wiring Installation 24
Electrical – Low Voltage Wiring 25
DIP Switch Settings 25
AXM Controls 26
TFC with Pump Wiring Diagram 27
TFC with Flow Switch Wiring Diagram 28
Unit Starting and Operating Checklist 29
Unit Start-Up Procedure 29
Performance Data – TFC036 30
Performance Data – TFC060 31
Preventive Maintenance 32
Troubleshooting 33
Revison History 36

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
Geothermal Heating and Cooling
2
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Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
climatemaster.com 3
Model Nomenclature: for Fluid Cooler
A = Current Revision
S = Standard
0 3 6 SG 2 A N N N
456 7
8
9 10 11 12 13 14
036
UNIT SIZE
060
VOLTAGE
CONTROLS
REVISION LEVEL Future
Pump Options
Future
T
1
T = Tranquility
SERIES
FC
3
FC = Fluid Cooler
CONFIGURATION
Heat Exchanger Options
S
15
S = Standard
Standard
2 = Standard (High Head Pump with Check Valve)
C = Flow Switch
N = NOT APPLICABLE
Future
N = NOT APPLICABLE
A
A = Ecoated + UV COAT
B = Standard
N = NOT APPLICABLE
(Outdoor)
G = 208-230/60/1
2

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
Geothermal Heating and Cooling
4
Safety
⚠ CAUTION! ⚠
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: Notication of installation, operation or
maintenance information, which is important, but
which is not hazard-related.
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
lters can quickly become clogged with construction dirt
and debris, which may cause system damage and void
product warranty.
⚠ WARNING! ⚠
WARNING! This product can expose you to chemicals
including Carbon Black, which is known to the State of
California to cause cancer and Methanol, which is known
to the State of California to cause birth defects or other
reproductive harm. For more information go to
www.P65Warnings.ca.gov
The following warning complies with State of California
law, Proposition 65.
95B0063N01
A
B
C
D
1
2
3
45
6
7
8
*95B0063N01*
*95B0063N01*
Hard Copies of this Drawing are for REFERENCE ONLY. For CURRENT INFO. refer to the DWG DATABASE.
Hard Copies of this Drawing are for REFERENCE ONLY. For CURRENT INFO. refer to the DWG DATABASE.
CLIMATEMASTER
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN INCHES.
TOLERANCES AS FOLLOWS:
DECIMALS - .031
ANGLES -
7300 SW 44th
Oklahoma City, OK. 73179
PHONE:[phone]<>FAX:[phone]
TITLE: LABEL SHEET TFC
FINISH:
Pro/E
DRAWING NO: 95B0063N01
MATERIAL:
SIZE
A
DRAWN BY: ROSS D.A. 11-Jun-20
SCALE: Not To Scale
REV
-
ENGINEER: REEM M. 11-Jun-20
SHEET: 1 OF 1
REV DESCRIPTION BY PCN DATE ENG
- INITIAL RELEASE DR 19-0502 11-Jun-20 RM
NOTES:
VENDOR: R-E Solutions
SIZE: 5" X 7"

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
climatemaster.com 5
General Information
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
signicantly reduce performance, reliability, and service life.
Always move and store units in an upright position. Tilting
units on their sides will cause equipment damage.
⚠ 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 equipment.
Inspection
Upon receipt of the equipment, carefully check the
shipment against the bill of lading. Make sure all units
have been received. Inspect the packaging of each unit,
and inspect each unit for damage. Insure that 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 within 60 days
of receipt of shipment. To le a freight claim contact
your ClimateMaster Customer Service Representative
immediately upon discovery of damage or missing parts,
but not more than 60 days after shipment. Contact
ClimateMaster by telephone [phone].
Storage
Equipment should be stored in its original packaging in
a clean, dry area. Store units in an upright position at all
times. Stack units a maximum of 2 units high.
Unit Protection
Cover units on the job site with either the original
packaging 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, 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, ttings, and valves before installing
any of the system components. Remove any dirt or
debris 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 original packaging
until installation is complete and all plastering,
painting, etc. is nished.
3. Verify 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.
5. Locate and verify any accessory items that may be
packaged inside the unit.

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
Geothermal Heating and Cooling
6
Unit Physical Data
Model 036 060
EC Axial Fan Motor
Fan Size (in.) 20 25
Water Connection Size
FPT (in.) 1 (Swivel)
Air Coil
Dimensions (H x W) 35” x 29”
Rows 3
FPI 12
Weights
Operating, lbs [kg] 304 [138] 315 [143]
Packaged, lbs [kg] 349 [158] 360 [163]
Total Fluid Volume, gal [L] 7.4 [28]
Unit Maximum Water Working Pressure Max Pressure PSIG [kPa]
Pump Option 145 [1000]
Flow Switch Option 160 [1103]

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
climatemaster.com 7
Dimensional Data
A
B
TOP VIEW
E
C
F
FRONT VIEW
13.47.9
15.3
3.5
BOTTOM VIEW
Model
Overall Cabinet Electrical Knockouts
A B C E F
Width Depth Height 1/2” 3/4”
036 in 36.5 36.5 44.1 12.1 14.3
cm 92.7 92.7 112.0 30.7 36.3
060 in 36.5 36.5 45.9 12.1 14.3
cm 92.7 92.7 116.6 30.7 36.3

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
Geothermal Heating and Cooling
8
Unit Application and Fluid Connections
System Application and Conguration:
There are several different applications where a uid
cooler can be utilized when combined with a water-
source or geothermal system. Two applications with
their congurations are detailed below:
Stand-Alone
In a stand-alone application the uid cooler is the
only device utilized to reject or extract heat from the
ambient air to a circulating uid loop. Within this
application there are two sub-applications. The rst
would be for an installation that doesn’t want to have
a refrigerant containing compressor section placed
outdoors. The uid cooler would be placed outdoors
on a permanent installation pad much like a traditional
air-source compressor section. The second is for a
non-scheduled change-out where an owner wants to
have a geothermal heat pump installed but there is a
lead time for the geothermal loop to be installed. A uid
cooler would be temporarily installed with the new heat
pump so the owners can have space conditioning while
waiting for the loop installation to be completed. The
uid cooler would then be removed upon installation of
the loop.
The TFC system has two different uid circulation
options for these applications. The rst option has an
internal ow switch inside the unit to validate ow in
the system. The water source heat pump will contain
a pump to circulate uid throughout the system
when a call is given from an indoor thermostat. The
second option provides an internal pump in the TFC
in installations where the water source heat pump
does not have a circulator. As water circulates in both
options, the uid cooler recognizes ow and runs
the fan at the appropriate speeds. This requires a
performance match from the uid cooler with the water
source heat pump.
An example of this uid circuit installation can be seen
in Figure 1.
Figure 1: Stand Alone Circuit Schematic
OUT
IN
OUT IN
Hybrid
In a hybrid application the uid cooler is utilized as a
supplementary device with a geothermal well eld
to extract heat in a circulating uid loop. The hybrid
system can allow for a reduction in total loop length
to balance out the loads in a system over an annual
basis. The geothermal loop acts as a “thermal battery”
that can be recharged by the uid cooler. The most
common use for a hybrid system is in buildings which
reject more heat to the ground annually. In this system,
the geothermal loop will slowly warm up the far eld
ground temperature creating a “hot loop” condition. A
uid cooler allows for this excess heat to be rejected
during favorable conditions which typically occur during
the fall, spring and winter as the ambient temperatures
will be less than the ground temperature.

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
climatemaster.com 9
The TFC uid circulation options allow for three different
installation types:
1. Series
The uid cooler is installed in series with the water
source heat pump. Either uid circulation option on
the TFC can be used depending on the preference
of the installer. As water circulates in both options,
the uid cooler recognizes ow and if conditions
are favorable for heat rejection the fan at the
appropriate speed.
When installed in a series conguration, the
following conditions must be addressed:
• Piping into a larger tonnage system or a system
with multiple units can negatively affect pump
performance as the pressure drop through the
uid cooler becomes too large. Each system
design should be reviewed to validate the
pressure drop and ow requirements.
• The uid cooler is only able to transfer heat
to and from the loop when the heat pump
circulator is in operation. This can limit favorable
hours for which heat transfer can occur with the
ambient air.
An example of this uid circuit can be seen in
Figure 2.
Unit Application and Fluid Connections, Cont’d.
Figure 2: Series Piping Schematic
OUT
IN
OUT IN
FROM LOOP
TO LOOP
The uid cooler above is shown to be placed on the
leaving side of the loop eld. This placement is ideal
for maximum annual heat rejection and not for “peak
temperature” reduction. For instance, if a hot loop
condition is present in the system most of the annual
rejection by the uid cooler occurs during fall, winter
and spring. This means the unit will be operating in
space heating and the warmest water in the system
would then be leaving the ground loop and returning
to the unit.
2. Parallel
The uid cooler is installed in parallel with the
water source heat pump. The ow switch option
is required for this installation option. As water
is circulated from heat pump, the uid cooler
recognizes ow and if conditions are favorable for
heat rejection the fan runs at the appropriate speed.
This application has an advantage and
disadvantage:
• There is a reduced concern with added
pressure drop when installed in parallel for
larger tonnage system or a system with multiple
units. Each system design should be reviewed
to see if the pressure drop and ow with the
system in parallel will create any potential risks.
• Flow is now split between the ground loop and
uid cooler. If the uid cooler is not in operation
the uid that is bypassed will not be rejecting
heat creating a slight inefciency in the total
system.
• The uid cooler is only able to transfer heat
to and from the loop when the heat pump
circulator is in operation. This can limit favorable
hours for which heat transfer can occur with the
ambient air.
An example of this uid circuit can be seen in
Figure 3.
Figure 3: Parallel Piping Schematic
OUT
IN
OUT IN
TO LOOP
FROM LOOP

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
Geothermal Heating and Cooling
10
Unit Application and Fluid Connections, Cont’d.
Figure 4: Pumped Parallel Piping Schematic
To Loop
From Loop
OUT
IN
OUT IN
3. Pumped Parallel
Similar to the previous installation option, the
uid cooler is installed in parallel with the water
source heat pump. The biggest change is the
uid cooler now requires the internal pump
option and is now piped so the outlet of the
uid cooler and heat pump is on a common line.
The uid cooler monitors a signal from the heat
pump and will turn on the circulating pump. If
conditions are favorable for heat rejection the
fan runs at the appropriate speed.
An example of this uid circuit can be seen in
Figure 4.

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
climatemaster.com 11
Installation
⚠ CAUTION! ⚠
The installation of uid cooler 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.
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.
Unit Location
Locate the unit in an outdoor area that allows for
adequate access for loop installation and also has
appropriate space for service personnel to perform
typical maintenance and repairs. The unit should
be located away from buildings, landscaping, and
other units by the dimensions given in Figure 5.
Installation within six feet of a dryer or kitchen vent is
not recommended. When possible do not install near
occupied spaces like bedrooms or family rooms.
CAUTION! To avoid equipment damage to units with a
pump, DO NOT allow system water pressure to exceed
145 psi [1000 kPa]. The pump has a maximum working
water pressure of 145 psi [1000 kPa]. Any pressure in
excess of 145 psi [1000 kPa] may damage the pump.
15-1/16
36-1/2
36-1/2
21.543
1-7/16
6-15/16
44-1/16
37-1/8
12-5/16
2
6-9/16
6-9/16 14-7/8
4-3/4
TFC036
Unobstructed
18”
18”
36” recommended for
service access. Adhere to
local building codes
18”
Figure 5: Unit with Clearance Dimensions in inches

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
Geothermal Heating and Cooling
12
Installation, Cont’d.
Unit mounting
The unit should be mounted on a vibration isolation
pad with loop access holes as shown in Figure 6. It
is recommended that this pad extend past all four
edges of the TFC unit. When mounting on an existing
concrete pad, 3” holes should be bored through the
pad to accommodate the pipe. The dimension for these
holes can be found with unit dimensional data on Page
7. In addition, risers should be installed per local code
requirements.
Figure 6: Unit with Mounting Pad and Risers
Field Connection of
Stainless Steel Braided Hoses
Stainless Steel Braided
Connecting Hoses
Risers are eld supplied and should be
installed per local code requirements.
Piping/Loop Installation
All earth loop piping materials should be polyethylene
fusion only for in-ground sections of the loop and it
is also recommended for inside piping. Galvanized or
steel ttings should not be used at any time due to
their tendency to corrode. All plastic to metal threaded
ttings should be avoided due to their potential to leak
over time.
The earth loop piping should be brought through the
loop access holes in the mounting pad. The unit should
then be placed onto the pad with the piping going
through the provided bottom opening holes. Install
the supplied pipe grommets and tting plates. The
polyethylene pipe can then be cut to the appropriate
length and brass adapters fused for connection to the
provided stainless steel braided hoses.
Piping Connections
TFC036 and 060 units are shipped with 1” stainless
steel braided hoses connected to unit piping. Field
connection end of hoses are gasketed female swivel.
A
Swivel
Loop End Stainless Steel Outer Braid NPT(M)
Unit End
Return
Supply
NPSH(F)
Figure 7: Hose Kit

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
climatemaster.com 13
Flushing the Loop
Figure 8a: Typical Cleanable Flush
Cart Strainer (100 mesh [0.149mm])
Figure 8b: Cam Fittings for Flush Cart Hoses
Attach to
Flush Port
Connect
to Flush
Cart Hose
(1 of 2)
⚠ WARNING! ⚠
WARNING! Disconnect electrical power source to prevent
injury or death from electrical shock.
Table 1: Minimum Flow Required to
Achieve 2 ft/sec (0.6 m/s) Velocity
Once piping is completed between the unit and the
loop, nal purging and charging of the loop is needed.
All air and debris must be removed from the loop piping
system before operation.
A ush cart (at least a 1.5 hp [1.1 kW] pump) is needed
to achieve adequate ow velocity in the loop to purge
air and debris from the loop itself. Flush the loop with a
high volume of water at a high velocity (2 fps [0.6 m/s] in
all piping). Use a lter in the loop return line of the ush
cart to remove debris from the system. Filtration of at
least 100 microns should be used during the ushing
process to ensure all debris is removed. See Table 1 to
determine the ow rate required to attain 2 fps [0.6 m/s].
The TFC requires a minimum ow rate of 16 gpm [60.6
l/m] to achieve 2 fps. The steps below must be followed
to ensure proper ushing.
Units with internal variable speed pumps also include
a check valve internal to the pump. It is not possible to
ush backwards through this pump. Care must be taken
to connect the ush cart hoses so that the ush cart
discharge is connected to the “water in” ushing valve
of the uid cooler.
Loop Fill
Place the water in and water out valves on the uid
cooler in valve position A, shown in Figure 9a. Connect
a garden hose to the ush cart and ll the loop with
water. The ush cart will ensure an even ll and
increase ushing speed. When water consistently
returns back to the ush reservoir, switch the valves to
position B (Figure 9b).
NOTICE: A hydrostatic pressure test is required on
ALL piping, especially underground piping before
nal backll per IGSHPA and the pipe manufacturers
recommendations.
PE Pipe Size Flow GPM [l/m]
3/4" 4 [15.14]
1" 6 [22.71]
1 1/4" 10 [37.85]
1 1/2" 13 [49.21]
2" 21 [79.49]

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
Geothermal Heating and Cooling
14
Flushing the Loop, Cont’d.
Figure 9a: Valve Position A - Loop Fill/Flush
Out
In
Valve Position
From Loop
To
Loop
Flush Port
Front of Unit
Valve Position
Figure 9b: Valve Position B - Unit Fill / Flush
From Loop
To
Loop
Out
In
Valve Position
Flush Port
Front of Unit
Valve Position
With the valves still in position B, allow the ush cart to
pump water into the system until water is consistently
returned to the ush reservoir.
Return the valves to position A. To begin ushing, turn
off the water from the garden hose and turn on the
ush cart. Once the ush reservoir is full, do not allow
the water level in the ush cart tank to drop below the
pump inlet line, as this can result in air being pumped
back into the system.
To purge air from the system, close the valve going
into the ush cart reservoir. This should dead head the
pump to max pumping pressure. Open the valve back
up and a pressure surge will be sent through the loop,
which forces air out of the piping system. Notice the
drop in the uid level in the ush cart tank. If all air is
purged from the system, the level will only drop 3/8” in
10” diameter PVC ush tank (approximately 0.5 gallon
[1.9 liters]). If the level drops more than this, ushing
should continue until all air is removed from the loop.
NOTICE: Actual ushing time require will vary for each
installation due to piping length, conguration, and ush
cart pump capacity. 3/8” or less uid level drop is the
ONLY indication that ushing is complete.
Switch valves to Position B to ush the unit. Flush
through the unit until all air pockets have been removed.
Move valves to position C. By switching both valves to
this position, water will ow through the loop and the
unit heat exchanger. Bleed air from the system using
the three ports connected to the top of each coil header.
The location of the ports can be seen in Figure 10.
Finally, the dead head test should be checked again for
an indication of air in the loop. Fluid level drop is your
only indication of air in the loop.

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
climatemaster.com 15
Flushing the Loop, Cont’d.
Figure 9c: Valve Position C - Full Flush
From Loop
To
Loop
Out
In
Valve Position
Add Antifreeze
Now if Needed
Dead Head
Pump Test
for Air
Flush Port
Front of Unit
Valve Position
Pressurize and Operate
As shown in Figure 9d, close the ush cart return valve
to pressurize the loop to at least 50 psi [517 kPA]. After
pressurizing, close the ush cart supply valve to isolate
the ush cart. Move the Fluid cooler water in and water
out valves to position D.
If the loop pressure is between 50 and 75psi [345 to
517 kPa] upon completion of ushing, pressure should
be sufcient for all seasons.
Unhook the ush cart from the uid cooler. Install caps
on the uid cooler water inlet and outlet to prevent and
leaks.
Figure 9d: Valve Position D - Pressurize and Operation
Out
In
Valve Position
2
Close to isolate
Internal Flow Controller
3
Close Internal Flow Controller
Valves for Operation Mode
From Loop
To
Loop
1
Dead Head
Pump to
Pressurize
to 50 PSI
Flush Port
Front of Unit
Valve Position
NOTICE: It is recommended to run the unit for 15-20
minutes to ‘temper’ the uid temperature and prepare
it for pressurization. This procedure helps prevent the
periodic “at” loop condition of no pressure.
Figure 10: Air Bleed Vents
“Air Vents”
Note: Third “Air Vent”
located on back of unit.
“Water Drain”

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
Geothermal Heating and Cooling
16
Loop Antifreeze Protection
Antifreeze Selection - General
Antifreeze is required if the system can be subjected to
ambient temperatures below 35°F. Alcohols and glycols
are commonly used as antifreeze solutions. Your local
representative should be consulted for the antifreeze best
suited to your area. In the event of a power outage, freeze
protection should be maintain in the system to the lowest
subjected ambient conditions.
Initially calculate the total volume of uid in the piping
system using Table 2. Then use the percentage by
volume shown in Table 3 for the amount of antifreeze. If
the minimum ambient temperature that can be reached
is less than shown in Table 3 please contact your local
representative for the appropriate percentage to protect
the system. Antifreeze concentration should be checked
from a well mixed sample using a hydrometer to measure
specic gravity.
Table 2: Fluid Volume
⚠ WARNING! ⚠
Fluid Volume (gal [liters] per 100’ [30 meters] Pipe)
Pipe Size Volume (gal) [liters]
Copper
1” 4.1 [15.3]
1.25” 6.4 [23.8]
2.5” 9.2 [34.3]
Polyethylene
3/4” IPS SDR11 2.8 [10.4]
1” IPS SDR11 4.5 [16.7]
1.25” IPS SDR11 8.0 [29.8]
1.5” IPS SDR11 10.9 [40.7]
2” IPS SDR11 18.0 [67.0]
Fluid Cooler 036/060 7.4 [28]
Flush Cart Tank 10” Dia x 3ft tall
[25.4cm x 91.4cm tall] 10 [37.9]
Table 3: Antifreeze Percentages by Volume
Type
Minimum Temperature
for Low Temperature Protection
10°F
[-12.2°C]
15°F
[-9.4°C]
20°F
[-6.7°C]
25°F
[-3.9°C]
Methanol
Propylene Glycol
Ethanol*
21%
29%
23%
17%
24%
20%
13%
18%
16%
8%
12%
11%
* Must not be denatured with any petroleum based product
WARNING! Always dilute alcohols with water (at least 50%
solution) before using. Alcohol fumes are ammable and
can cause serious injury or death if not handled properly.
When handling methanol (or any alcohol), always wear
eye protection and rubber gloves as alcohols are easily
absorbed through the skin.
Contact your ClimateMaster distributor if you have any
questions as to antifreeze selection.
⚠ WARNING! ⚠
⚠ CAUTION! ⚠
WARNING! Always use properly marked vehicles (D.O.T.
placards), and clean/suitable/properly identied containers
for handling ammable antifreeze mixtures. Post and
advise those on the jobsite of chemical use and potential
dangers of handling and storage.
NOTICE: DO NOT use automotive windshield washer uid as
antifreeze. Washer uid contains chemicals that will cause
foaming.
CAUTION! Always obtain MSDS safety sheets for all
chemicals used in ground loop applications including
chemicals used as antifreeze.
Antifreeze Charging
It is highly recommended to utilize premixed antifreeze
uid where possible to alleviate many installation
problems and extra labor.
The following procedure is based upon pure antifreeze
and can be implemented during the Full Flush procedure
with three way valves in the Figure 10c - Valve Position
C. If a premixed mixture of 15°F [-9.4°C] freeze protection
is used, the system can be lled and ushed with the
premix directly to prevent handling pure antifreeze during
the installation.
1. Flush loop until all air has been purged from system
and pressurize to check for leaks before adding
any antifreeze.
2. Run discharge line to a drain and hook up antifreeze
drum to suction side of pump (if not adding below
water level through approved container). Drain ush
cart reservoir down to pump suction inlet so reservoir
can accept the volume of antifreeze to be added.
3. Calculate the amount of antifreeze required by rst
calculating the total uid volume of the loop from
Table 2. Then calculate the amount of antifreeze
needed using Table 3 for the appropriate freeze
protection level. Many southern applications require
freeze protection because of exposed piping to
ambient conditions.
4. Isolate unit and prepare to ush only through loop (see
Figure 10a). Start ush cart, and gradually introduce
the required amount of liquid to the ush cart tank
(always introduce alcohols under water or use suction
of pump to draw in directly to prevent fuming) until
attaining the proper antifreeze protection. The rise

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
climatemaster.com 17
Loop Antifreeze Protection, Cont’d.
in ush reservoir level indicates amount of antifreeze
added (some carts are marked with measurements
in gallons or liters). A ten inch [25.4 cm] diameter
cylinder, 3 foot [91.4 cm] tall holds approximately 8
gallons [30.3 liters] of uid plus the hoses (approx.
2 gallons, [7.6 liters], which equals about 10 gallons
[37.9 liters] total. If more than one tankful is required,
the tank should be drained immediately by opening
the waste valve of the ush cart noting the color of the
discharge uid. Adding food coloring to the antifreeze
can help indicate where the antifreeze is in the circuit
and prevents the dumping of antifreeze out the waste
port. Repeat if necessary.
5. Open ush valves to ush through both the unit and
the loop and ush until uid is homogenous and
mixed. It is recommended to run the unit for 15-20
minutes to ‘temper’ the uid temperature and prepare
it for pressurization. Devoting this time to clean up can
be useful. This procedure helps prevent the periodic
“at” loop condition.
6. Close the ush cart return valve; and immediately
thereafter, close the ush cart supply valve, leaving
a positive pressure in the loop of approximately 50
psi [345 kPa]. This is a good time to pressure check
the system as well. Check the freeze protection of
the uid with the proper hydrometer to ensure that
the correct amount of antifreeze has been added to
the system. The hydrometer can be dropped into the
ush reservoir and the reading compared to Chart
1a for Methanol, 1b for Propylene Glycol, and 1c for
Ethanol to indicate the level of freeze protection. Do
not antifreeze more than a +10°F [-12.2°C] freeze
point. Specic gravity hydrometers are available in
the residential price list. Repeat after reopening and
ushing for a minute to ensure good second sample
of uid. Inadequate antifreeze protection can cause
nuisance low temperature lockouts during cold
weather.
7. Close the ush cart return valve; immediately
thereafter, close the ush cart supply valve, shut off
the ush cart leaving a positive pressure in the loop
of approximately 50-75 psi [345-517 kPa]. Refer to
Figure 10d for more details.
⚠ WARNING! ⚠
WARNING! Always dilute alcohols with water (at least 50%
solution) before using. Alcohol fumes are ammable and
can cause serious injury or death if not handled properly.
When handling methanol (or any alcohol), always wear
eye protection and rubber gloves as alcohols are easily
absorbed through the skin.
-50°F -40°F -30°F -20°F -10°F 0°F 10°F 20°F 30°F 40°F 50°F
0.960
0.965
0.970
0.975
0.980
0.985
0.990
0.995
1.000
Low Temperature Protection
Specific Gravity
-45.6°C
-40°C
-34.4°C
-28.9°C
-23.3°C
-17.8°C
-12.2°C
-6.7°C
-1.1°C
4.4°C
10°C
1.00
1.01
1.02
1.03
1.04
1.05
1.06
1.07
Low Temperature Protection
Specific Gravity
-40°F -30°F -20°F -10°F 0°F 10°F 20°F 30°F 40°F
-40°C -34.4°C -28.9°C -23.3°C -17.8°C -12.2°C -6.7°C -1.1°C 4.4°C
0.975
0.980
0.985
0.990
0.995
1.000
-5°F 0°F 5°F 10°F 15°F 20°F 25°F 30°F 35°F
1.7°C-1.1°C-3.9°C-6.7°C-9.4°C-12.2°C-15.0°C-17.8°C-20.6°C
Low Temperature Protection
Chart 1a: Methanol Specic Gravity
Chart 1b: Propylene Glycol Specic Gravity
Chart 1c: Ethanol Specic Gravity
Low Water Temperature Cutout Setting - AXM Control
When antifreeze is selected, the GND to CO jumper wire
should be clipped to select the low temperature (antifreeze
10°F [-12.2°C]) set point (see “Low Water Temperature
Cutout Selection” in this manual for further details).

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
Geothermal Heating and Cooling
18
Optional Internal Pump
0
5
10
15
20
25
30
35
40
45
0 5 10 15 20 25
Head (�.)
Flow (gpm)
With Check
Valve
Figure 11: High Head Variable Pump Performance
Determine overall system pressure drop and compare
to Figure 11 to ensure that adequate uid ow can
be provided. Unit pressure drop is shown on the
Performance/Pressure Drop pages of this manual.
*Note: If head pressure required exceeds pump
capacity, then a external pump may be required.

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
climatemaster.com 19
Water Quality Standards
pH - Chilled Water 0.7F°58< to 9.0 7.0 to 9.0 7.0 to 9.0 7.0 to 9.0
pH - Heated Water 0.8F°58> to 10.0 8.0 to 10.0 8.0 to 10.0 8.0 to 10.0
Alkalinity
(
HCO3
)
ppm - CaCO
3
equiv. 50 to 500 50 to 500 50 to 500 50 to 500
Calcium (Ca)ppm <100 <100 <100 <100
Magnesium (Mg)ppm <100 <100 <100 <100
Total Hardness (CaCO3)ppm - CaCO3 equiv. 30 to 150 150 to 450 150 to 450 150 to 450
Langelier Satura�on Index LSI -0.5 to +0.5 -0.5 to +0.5 -0.5 to +0.5 -0.5 to +0.5
Ryznar Stability 5.6ISRxednI to 8.0 6.5 to 8.0 6.5 to 8.0 6.5 to 8.0
Total Dissolved Solids (TDS) ppm - CaCO
3
equiv. <1000 <1000 <1000 <1500
Sulfate (SO
4
2-
)ppm <200 <200 <200 <200
Nitrate(NO
3
-
)001<001<001<001<mpp
Chlorine (free)(Cl) ppm <0.5 <0.5 <0.5 <0.5
Chloride (water < 80°F) ppm <20 <20 <150 <150
Chloride (water > 120°F) ppm <20 <20 <125 <125
Hydrogen Sulfide
α
(H
2
S) 5.0<5.0<5.0<5.0<bpp
Carbon Dioxide (CO
2
)ppm 0 <50 10 to 50 10 to 50
Iron Oxide (Fe) ppm <1.0 <1.0 <1.0 <0.2
Manganese (Mn)ppm < 0.4 <0.4 <0.4 <0.4
Ammonia (NH
3
)ppm <0.05 <0.1 <0.1 <0.1
Chloramine (NH
2
CL) ppm 0 0 0 0
Iron 0000Lm/sllecairetcaB
Slime Forming 0000Lm/sllecairetcaB
Sulfate reducing 0000Lm/sllecairetcab
Suspended Solids
β
01<01<01<01<mpp)SST(
Earth Ground Resistance
χ
0smhO Consult NEC & local electrical codes for grounding requirements
Electrolysis Voltage
δ
003<Vm Measure voltage internal water loop to HP ground
Leakage Current
δ
51<Am Measure current in water loop pipe
Building Primary Electrical Ground to unit, must meet local diameter and penetra�on length requirements
CLIMATEMASTER WATER QUALITY STANDARDS
For Closed-Loop and Open-Loop Systems
All Heat Exchanger
Types
COAXIAL HX Copper
Tube in Tube
COAXIAL HX
Cupronickel
Brazed Plate HX
316 SS
Symbol UnitsDescrip�on
Electrolysis
All HX types Scaling Poten�alCorrosion Preven�on
(Cl
-
)
Fouling &
Biological
Do not connect heat pump to steel pipe unless dissimilar materials are separated by using Di-electric unions. Galvanic corrosion of heat
pump water pipe will occur.
Heat Exchanger Type
Closed Loop
Recircula�ng Open Loop, Tower, Ground Source Well
-
Table 4: Water Quality Standards
Clean water is essential to the performance and life span of water source heat pumps. Contaminants, chemicals, and
minerals all have the potential to cause damage to the water heat heat exchanger if not treated properly. All closed
water loop systems should undergo water quality testing and be maintained to the water quality standards listed in
this table.

Tranquility®Fluid Cooler – 60 Hz
Rev.: February 22, 2022
Geothermal Heating and Cooling
20
Water Quality Standards, Cont’d.
1. The ClimateMaster Water Quality Table provides
water quality requirements for coaxial & brazed
plate heat exchangers.
2. The water must be evaluated by an independent
testing facility comparing site samples against
this Table. When water properties are outside of
these parameters, the water must either be treated
by a professional water treatment specialist to
bring the water quality within the boundaries of
this specication, or an external secondary heat
exchanger must be used to isolate the heat pump
water system from the unsuitable water. Failure
to do so will void the warranty of the heat pump
system and will limit liability for damage caused by
leaks or system failure.
3. Regular sampling, testing and treatment of the
water is necessary to assure that the water quality
remains within acceptable levels thereby allowing
the heat pump to operate at optimum levels.
4. If closed‐loop systems are turned off for extended
periods, water samples must be tested prior to
operating the system.
5. For optimal performance, it is recommended that
the closed‐loop piping systems are initially lled
with de‐ionized water.
6. Well water with chemistry outside of these
boundaries, and salt water or brackish water
requires an external secondary heat exchanger.
Surface/Pond water should not be used.
7. If water temperature is expected to fall below 40°F,
antifreeze is required. Refer to the heat pump IOM
for the correct solution ratios to prevent freezing.
αHydrogen Sulde has an odor of rotten eggs. If
one detects this smell, a test for H2S must be
performed. If H2S is detected above the limit
indicated, remediation is necessary (Consult with
your Water Testing/Treatment Professional) or
a secondary heat exchanger is required using
appropriate materials as recommended by the heat
exchanger supplier.
βSuspended solids and particulates must be ltered
to prevent fouling and failure of heat exchangers.
Strainers or particulate lters must be installed to
provide a maximum particle size of 600 micron
(0.60 mm, 0.023 in.) using a 20 to 30 mesh screen
size. When a loop is installed in areas with ne
material such as sand or clay, further ltration is
required to a maximum of 100 micron. Refer to the
Strainer / Filter Sizing Chart to capture the particle
sizes encountered on the site.
χ An electrical grounding system using a dedicated
ground rod meeting NEC and Local Electrical
codes must be installed. Building Ground must not
be connected the WSHP piping system or other
plumbing pipes.
δ Refer to IOM for instructions on measuring
resistance and leakage currents within water loops.
Do not use PVC pipe for water loop (compressor
POE oil and glycols damage PVC) use of HDPE pipe
is recommended.
Strainer / Filter Sizing
Mesh Size Particle Size
Microns mm Inch
20 840 0.840 0.0340
30 533 0.533 0.0210
60 250 0.250 0.0100
100 149 0.149 0.0060
150 100 0.100 0.0040
200 74 0.074 0.0029