C L I M AT E M A S T E R W AT E R - S O U R C E H E AT P U M P S
C o n s o l e s
R e v. : 5 N o v. , 2 0 0 9 B
40
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 i n g a n d C o o l i n g S y s t e m s
Unit Start-Up Procedure
Unit Start-up Procedure
1. Turn the thermostat fan position to “ON”. Blower
should start.
2. Balance air
fl
ow at registers.
3. Adjust all valves to their full open positions. Turn on
the line power to all heat pumps.
4. Room temperature should be within the minimum-
maximum ranges of table 8. During start-up checks,
loop water temperature entering the heat pump
should be between 60°F [16°C] and 95°F [35°C].
5. Two factors determine the operating limits
of ClimateMaster heat pumps, (a) return air
temperature, and (b) water temperature. When any
one of these factors is at a minimum or maximum
level, the other factor must be at normal level to
insure proper unit operation.
a. Adjust the unit thermostat to the warmest setting.
Place the thermostat mode switch in the “COOL”
position. Slowly reduce thermostat setting until
the compressor activates.
b. Check for cool air delivery at the unit grille within a
few minutes after the unit has begun to operate.
Note: Units have a
fi
ve minute time delay in the
control circuit that can be eliminated on the CXM/
DXM control board as shown below in Figure 8.
See controls description for details.
c. Check the elevation and cleanliness of the
condensate lines. Dripping may be a sign of a
blocked line. Check that the condensate trap is
fi
lled to provide a water seal.
d. Refer to Table 9. 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.
e. Check air temperature drop across the air coil
when compressor is operating. Air temperature
drop should be between 15°F and 25°F [8°C and
14°C].
f. Turn thermostat to “OFF” position. A hissing noise
indicates proper functioning of the reversing valve.
6. Allow
fi
ve (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 9. 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.
e. Check air temperature rise across the air coil when
compressor is operating. Air temperature rise
should be between 20°F and 30°F [11°C and 17°C].
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
ALL WARRANTY REGISTRATION PAPERS TO
CLIMATEMASTER.
Note: If performance during any mode appears
abnormal, refer to the CXM/DXM 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.
WARNING!
When the disconnect switch is closed, high
voltage is present in some areas of the electrical panel.
Exercise caution when working with energized equipment.
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.
Short test pins
together to enter Test
Mode and speed-up
timing and delays for
20 minutes.
Figure 8: Test Mode Pins
WARNING!
CAUTION!
