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 P U M P S
42
C l i m a t e M a s t e r Wa t e r- S o u rc e H e a t P u m p s
Tr a n q u i l i t y 1 6 ( T C ) S e r i e s
R e v. : 2 5 J u l y, 2 0 1 7
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 9. During start-up checks,
loop water temperature entering the heat pump
should be between 16°C and 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 28.
See controls description for details.
c. Verify that the compressor is on and that the water
fl ow rate is correct by measuring pressure drop
through the heat exchanger using the P/T plugs
and comparing to table 10.
d. 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.
e. Refer to table 17. Check the temperature of both
entering and leaving water. If temperature is within
range, proceed with the test. Verify correct water
fl ow by comparing unit pressure drop across the
heat exchanger versus the data in tables 10b and
c. 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 (kW) = TD x l/s x 4.18,where TD is the
temperature difference between the entering and
leaving water, and l/s is the fl ow rate, determined
by comparing the pressure drop across the heat
exchanger to table 10.
f. Check air temperature drop across the air coil when
compressor is operating. Air temperature drop
should be between 8°C and 14°C.
g. 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 17. Check the temperature of both
entering and leaving water. If temperature is within
range, proceed with the test. Verify correct water
fl ow by comparing unit pressure drop across the
heat exchanger versus the data in table 10. 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 (kW) = TD x l/s x 4.18, where TD is the
temperature difference between the entering and
leaving water, and l/s is the fl ow rate in U.S. GPM,
determined by comparing the pressure drop across
the heat exchanger to table 10.
e. Check air temperature rise across the air coil when
compressor is operating. Air temperature rise should
be between 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.
Unit Start-Up Procedure
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.
WARNING!
CAUTION!
Figure 28: Test Mode Pins
LT1
LT2
Short test pins together to enter
Test Mode and speed-up timing
and delays for 20 minutes.
