Unit Start-Up And Operating Conditions - ClimateMaster Trilogy Variable (VE) Series Installation, Operation & Maintenance Instructions Manual

Variable ( VE ) Series IOM - 60Hz HFC-410A
Trilogy
®
R e v i s i o n D a t e : 2 2 D e c e m b e r , 2 0 2 1

Unit Start-Up and Operating Conditions

Unit and System Checkout
BEFORE POWERING SYSTEM, please check the following:
UNIT CHECKOUT
 Shutoff valves: Insure that all isolation valves are open.
 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. Residential 208-230V units
are factory wired for 230V operation unless specified
otherwise.
 Loop/water piping is complete and purged of air. Water/
piping is clean.
 Antifreeze has been added if necessary.
 Entering water and air: Insure that entering water and air
temperatures are within operating limits of Tables 10a
and 10b.
 Low water temperature cutout: Verify that low water
temperature cut-out 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 CFM selection and compare
to design requirements.
 Condensate line: Verify that condensate trap is installed
and pitched.
 Unit air coil and filters: Insure that filter is clean and
accessible. Clean air coil of all manufacturing oils.
 Unit controls: Verify that EXM field selection options are
properly configured. Low voltage wiring is complete.
 Blower CFM and Water ∆T are properly configured.
 Service/access panels are in place.
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
system longevity (see Table 5).
 System flushing: Verify that all air is purged from the
system. Air in the system can cause poor operation or
system corrosion. Water used in the system must be
potable quality initially and clean of dirt, piping slag,
and strong chemical cleaning agents. Some antifreeze
solutions may require distilled water.
 Internal Flow Controller: Verify that it is purged of air 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 setting is appropriate for the application.
 Miscellaneous: Note any questionable aspects of
the installation.
40
CAUTION! Verify that ALL water valves are open and
allow water flow prior to engaging the compressor. Freez-
ing of the heat exchanger or water lines can permanently
damage the heat pump.
CAUTION! To avoid equipment damage, DO NOT
leave system filled 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.
G e o t h e r m a l H e a t i n g a n d C o o l i n g
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CAUTION!
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CAUTION!
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