C L I M A T E M A S T E R W A T E R - S O U R C E H E A T P U M P S
Tranquility
®
Water-to-Water (TMW) Series
R e v. : 0 4 / 1 5 / 1 6
38
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
LT1
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
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 specifi ed
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 fl ows that can erode heat exchangers.
q
Unit Controls: Verify CXM or DXM fi eld selection
options are proper and complete.
BEFORE POWERING SYSTEM, please check the following:
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 fi ttings.
q
System Flushing: Verify all hoses are connected end
to end when fl ushing 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. Confi rm maintenance schedule for strainers.
q
Miscellaneous: Note any questionable aspects of the
installation.
WARNING!
WARNING!
Verify ALL water controls are open and allow
water fl ow 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 fi lled 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.
Unit & System Checkout
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 fi 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!
