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c l i m a t e m a s t e r. c o m
T H E S M A R T S O L U T I O N F O R E N E R G Y E F F I C I E N C Y
P a c k a g e d U n i t s
R e v. : 1 / 0 6 / 0 9 B
Unit Starting and Operating Conditions
CAUTION!
To avoid possible damage to a plastic (PVC)
piping system, do not allow temperatures to exceed 113°F
[45°C].
Unit and System Checkout
BEFORE POWERING SYSTEM, please check the following:
UNIT CHECKOUT
Balancing/shutoff valves: Insure that all isolation
valves are open and water control valves are wired.
ClimaDry-equipped units have a manual air bleed
valve at the top of the reheat coil. This valve must be
used to bleed the air from the reheat coil after fi lling
the system, for ClimaDry to operate properly.
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: Insure that transformer
has the properly selected voltage tap. Commercial
208-230V units are factory wired for 208V operation
unless specifi ed otherwise.
Entering water and air: Insure that entering water and
air temperatures are within operating limits of Table 7.
Low water temperature cutout: Verify that low water
temperature cut-out on the CXM/DXM control is
properly set.
Unit fan: Manually rotate fan to verify free rotation
and insure that blower wheel is secured to the motor
shaft. Be sure to remove any shipping supports
if needed. DO NOT oil motors upon start-up. Fan
motors are pre-oiled at the factory. Check unit fan
speed selection and compare to design requirements.
Condensate line: Verify that condensate line is open
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: Insure 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
set points 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 insure 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 set
points 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 set points and are
operating as designed.
Miscellaneous: Note any questionable aspects of
the installation.
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.
UNIT AND SYSTEM CHECKOUT
CAUTION!
CAUTION!
CAUTION!
Summary of Contents for Genesis Compact (GC) Series
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