Unit Start-Up Procedure - Nibe CLIMATEMASTER TRANQUILITY 16 Series Installation Operation & Maintenance

T H E S M A R T S O L U T I O N F O R E N E R G Y E F F I C I E N C Y

Unit Start-up Procedure

1. Turn the thermostat fan position to "ON". Blower
should start.
2. Balance air flow 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 five minute time delay in the
control circuit that can be eliminated on the CXM2/
DXM2.5 control board as shown below in Figure
28. See controls description for details.
c. Verify that the compressor is on and that the
water flow 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
filled 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 flow 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 flow 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 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.
Unit Start-Up Procedure
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 flow 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 flow 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 CXM2/DXM2.5 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.
Figure 28: Test Mode Button
⚠
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 flow prior to engaging the compressor.
Freezing of the coax or water lines can permanently
damage the heat pump.
c l i m a t e m a s t e r . c o m
Tr a n q u i l i t y 1 6 ( T C ) S e r i e s
R e v . : 2 4 J a n u a r y , 2 0 2 3
Push test button to enter Test
Mode and speed-up timing
and delays for 20 minutes.
LT1
⚠
LT2
WARNING!
⚠
CAUTION!
LT1
LT1
LT2
LT2
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