THE SMART SOLUTION FOR ENERGY EFFICIENCY
Tranquility
®
Compact Belt Drive (TCH/V) Series
Rev.: July 25, 2017
69
climatemaster.com
Unit Starting and Operating Conditions
CAUTION! Verify that ALL water control valves 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.
NOTICE! Failure to remove shipping brackets from
spring-mounted compressors will cause excessive
noise, and could cause component failure due to
added vibration.
CAUTION! To avoid equipment damage, DO NOT
leave system fi lled in a building without heat during the
winter unless antifreeze is added to the water loop. Heat
exchangers never fully drain by themselves and will freeze
unless winterized with antifreeze.
CAUTION!
CAUTION!
BEFORE POWERING SYSTEM, please check the
following:
UNIT CHECKOUT
Line voltage and wiring: Verify that voltage is within
an acceptable range for the unit and wiring and
fuses/breakers are properly sized. Verify that low
voltage wiring is complete.
Unit control transformer: Ensure that transformer
has the properly selected voltage tap. Commercial
380-420V units are factory wired for 380V operation
unless specifi ed otherwise.
Balancing/shutoff valves: Ensure that all isolation
valves are open (after system fl ushing - see System
Checkout) and water control valves are wired.
Entering water and air: Ensure that entering water
and air temperatures are within operating limits of
Table 9.
Low water temperature cutout: Verify that low water
temperature cut-out on the CXM/DXM control is
properly set.
Unit blower wheel: Manually rotate blower wheel to
verify free rotation and ensure that all blower wheels
are secured to the blower motor shaft and centered
in housing.
Blower motor: Verify motor bolts are tight. DO NOT
oil motors upon start-up. Fan motors are pre-oiled at
the factory.
Check shaft pillow blocks, sheave and pulley are tight
Verify sheave has been set to turns in design
requirement. Record turns on start up log sheet.
Verify belt is straight and proper tension
Condensate line: Verify that condensate line is open,
trapped, vented and properly pitched toward drain.
Water fl ow balancing: Record inlet and outlet water
temperatures for each heat pump upon startup.
This check can eliminate nuisance trip outs and high
velocity water fl ow that could erode heat exchangers.
Unit air coil and fi lters: Ensure that fi lter is clean and
accessible. Clean air coil of all manufacturing oils.
Unit controls: Verify that CXM or DXM fi eld selection
options are properly set.
SYSTEM CHECKOUT
System water temperature: Check water temperature
for proper range and also verify heating and cooling
setpoints for proper operation.
System pH: Check and adjust water pH if necessary
to maintain a level between 6 and 8.5. Proper pH
promotes longevity of hoses and fi ttings
(see table 3).
System fl ushing: Verify that all hoses are connected
end to end when fl ushing to ensure that debris
bypasses the unit heat exchanger, water valves and
other components. Water used in the system must
be potable quality initially and clean of dirt, piping
slag, and strong chemical cleaning agents. Verify that
all air is purged from the system. Air in the system
can cause poor operation or system corrosion.
Cooling tower/boiler: Check equipment for proper
setpoints and operation.
Standby pumps: Verify that the standby pump is
properly installed and in operating condition.
System controls: Verify that system controls function
and operate in the proper sequence.
Low water temperature cutout: Verify that low water
temperature cut-out controls are provided for the
outdoor portion of the loop. Otherwise, operating
problems may occur.
System control center: Verify that the control center
and alarm panel have appropriate setpoints and are
operating as designed.
Miscellaneous: Note any questionable aspects of
the 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!
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