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
TSL Vertical Stack
R e v. : 0 4 / 2 4 / 2 0 1 9
50
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
Unit Start-Up Procedures
Unit Start-up Procedure
1. Adjust all valves to their full open positions. Turn on
the line power to all heat pumps.
2. Turn the thermostat fan position to “ON”. Blower
should start.
3. Balance air fl ow at registers.
4. Room temperature should be within the minimum-
maximum ranges of Tables 12 & 13. 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 ensure 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 are eliminated
in the test mode.
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 Tables 12 & 13. 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. Check the temperature difference between
entering and leaving water, see table 14. If
temperature is within range, proceed with the
test. If temperature is outside of the operating
range, check refrigerant pressures, see table 15A
- D.
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. Inner panel and fi lter must be on chassis to block air
from bypassing air coil. Bypass air will cause unit to fault
off.
8. 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 ensure
proper diagnosis and repair of the equipment.
9. When testing is complete,
a. Set thermostat to owners
b. Re-assemble all parts.
10. Save start up log sheet for future reference.
11. 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 and DXM2 sections 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.
WARNING!
CAUTION!
Table 14: Water Temperature Change
Through Heat Exchanger
