Unit Start-Up Procedure - Heat Controller HTV Series Installation, Operation & Maintenance Instructions Manual

Unit Start-Up Procedure

Heat of rejection (HR) can be
calculated and compared to
submittal data capacity pages.
The formula for HR for systems
with water is as follows:
HR = TD x GPM x 500, where TD is
the temperature difference between
the entering and leaving water, and
GPM is the flow rate in U.S. GPM,
determined by comparing the
pressure drop across the heat
exchanger to Table 8.
f. Check air temperature drop across
the air coil when compressor is
operating. Air temperature drop
should be between 15°F and 25°F.
g. Turn thermostat to "OFF" position.
A hissing noise indicates proper
functioning of the reversing valve.
6. Allow five (5) minutes between tests for
pressure to equalize before beginning
heating test
a. Adjust the thermostat to the lowest
setting. Place the thermostat
mode switch in the "HEAT"
position.
b. Slowly raise the thermostat to a
higher temperature until the
compressor activates.
c. Check for warm air delivery within a
few minutes after the unit has
begun to operate.
d. Refer to Table 7. Check the
temperature of both entering
and leaving water. If
temperature is within range,
proceed with the test. If
temperature is outside of the
operating range, check
refrigerant pressures and
compare to Table 9. Verify
correct water flow
HTV/HTD/HTH SERIES
UNIT START-UP PROCEDURE
36
by comparing unit pressure drop
across the heat exchanger versus the
data in Table 8. Heat of extraction
(HE) can be calculated and compared
to submittal data capacity pages.
The formula for HE for systems with
water is as follows:
HE = TD x GPM x 500, where TD is
the temperature difference between
the entering and leaving water, and
GPM is the flow rate in U.S. GPM,
determined by comparing the
pressure drop across the heat
exchanger to Table 8.
e. Check air temperature rise across the
air coil when compressor is operating.
Air temperature rise should be
between 20°F and 30°F.
f. Check for vibration, noise, and water
leaks.
7. If unit fails to operate, perform
troubleshooting analysis (see
troubleshooting section). If the check
described fails to reveal the problem and
the unit still does not operate, contact a
trained service technician to insure
proper diagnosis and repair of the
equipment.
8. When testing is complete, set system to
maintain desired comfort level.
9. BE CERTAIN TO FILL OUT AND
FORWARD WARRANTY
REGISTRATION CARD TO HEAT
CONTROLLER.
Note: If performance during any mode
appears abnormal, refer to the CXM section
or troubleshooting section of this manual.
To obtain maximum performance, the air coil
should be cleaned before start-up. A 10%
solution of dishwasher detergent and water is
recommended.
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Heat Controller, Inc.