C L I M AT E M A S T E R WAT E R - S O U R C E H E AT P U M P S
Tranquility
®
Water-to-Water (TMW) Series
R e v. : M a r c h 1 0 , 2 0 2 1
C l i m a t e M a s t e r Wa t e r-S o u rc e H e a t P u m p s
38
Unit & System Checkout
LT1
LT2
LT1
LT1
LT2
LT2
Short test pins together
to enter Test Mode and
speed-up timing and delays
for 20 minutes.
Figure 5: Test Mode Pins
CXM BOARD
BEFORE POWERING SYSTEM, please check the following:
UNIT CHECKOUT
Balancing/Shutoff Valves: Ensure all isolation valves
are open, water control valves wired and open or coax
may freeze and burst.
q
Line Voltage and Wiring: Ensure Voltage is within an
acceptable range for the unit and wiring and fuses/
breakers are properly sized. Low voltage wiring is
complete.
q
Unit Control Transformer: Ensure transformer has
properly selected control voltage tap. 208-230V units
are factory wired for 208V operation unless specified
otherwise.
q
Entering Water: Ensure entering water temperatures are
within operating limits of Table 6.
q
Low Water Temperature Cutout: Verify low water
temperature cut-out on CXM/DXM is properly set.
q
Water Flow Balancing: Verify inlet and outlet water
temperatures on both Load and source are recorded
for each heat pump upon startup. This check can
eliminate nuisance trip outs and high velocity water
flows that can erode heat exchangers.
q
Unit Controls: Verify CXM or DXM field selection
options are proper and complete.
SYSTEM CHECKOUT
q
System Water Temperature: Check load and source
water temperature for proper range and also verify
heating and cooling setpoints for proper operation.
q
System pH: System water pH is 6 - 8.5. Proper pH
promotes longevity of hoses and fittings.
q
System Flushing: Verify all hoses are connected end
to end when flushing to ensure debris bypasses unit
heat exchanger and water valves etc. Water used in
the system must be potable quality initially and clean
of dirt, piping slag, and strong chemical cleaning
agents. Verify all air is purged from the system. Air
in the system can cause poor operation or system
corrosion.
q
Cooling Tower/Boiler: Check equipment for proper
setpoints and operation.
q
Standby Pumps: Verify the standby pump is properly
installed and in operating condition.
q
System Controls: Verify system controls function and
operate in the proper sequence.
q
Low Water Temperature Cutout: Verify low water
temperature cut-out controls are provided for the
outdoor portion of the loop or operating problems
will occur.
q
System Control Center: Verify control center and
alarm panel for proper setpoints
and operation.
q
Strainers: Verify 20 mesh (841 micron) [0.84mm]
strainers are installed in load and source water
piping. Confirm maintenance schedule for strainers.
q
Miscellaneous: Note any questionable aspects of
the installation.
⚠
WARNING!
⚠
WARNING!
Verify ALL water controls are open and allow
water flow prior to engaging the compressor. Freezing of the
coax or water lines can permanently damage the heat pump.
⚠
WARNING!
⚠
WARNING!
To avoid equipment damage, DO NOT leave
system filled in a building without heat during the winter
unless antifreeze is added to system water. Condenser
coils never fully drain by themselves and will freeze unless
winterized with antifreeze.
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.
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!
⚠
