Unit Start-Up Procedure - Rheem RPVS Series Installation, Operation & Maintenance Instructions Manual

R e s i d e n t i a l S p l i t
R e v. : 1 3 M a r c h , 2 0 1 5

Unit Start-Up Procedure

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 11.
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 12a. 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 Tables 13a through 13d.
Verify correct water fl ow by comparing unit pressure
drop across the heat exchanger versus the data in
Table 11. Heat of rejection (HR) can be calculated
and compared to catalog 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
diff erence between the entering and leaving water,
and GPM is the fl ow rate in U.S. GPM, determined
by comparing the pressure drop across the heat
exchanger to Table 11.
f. 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].
g. Turn thermostat to "OFF" position. A hissing noise
indicates proper functioning of the reversing valve.
7. 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 12a. 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 Tables 13a through 13d
Verify correct water fl ow by comparing unit pressure
drop across the heat exchanger versus the data in
Table 11. 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
diff erence between the entering and leaving water,
and GPM is the fl ow rate in U.S. GPM, determined
by comparing the pressure drop across the heat
exchanger to Table 11.
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.
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 insure
44
proper diagnosis and repair of the equipment.
9. When testing is complete, set system to maintain
desired comfort level.
10. BE CERTAIN TO FILL OUT AND RETURN ALL
WARRANTY REGISTRATION PAPERWORK.
Note: If performance during any mode appears abnormal,
refer to the ICC section or troubleshooting section of this
manual.
WARNING!
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!
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.
Table 11: Two-Stage HFC-410A Compressor Section
Coax Water Pressure Drop
Pressure Drop (psi)
Model GPM
30°F 50°F
2.3 0.7
3.0 1.1
025
3.4 1.3
4.5 2.0
6.0 3.1
3.0 0.7
4.5 1.1
036
6.0 1.3
6.8 2.0
9.0 6.9
4.5 0.7
6.0 1.1
048
6.8 1.3
9.0 2.0
12.0 4.6
6.0 0.9
7.5 1.7
9.0 2.5
062
11.3 3.7
12.0 4.1
15.0 6.1
70°F 90°F
0.4 0.4 0.5
0.7 0.6 0.7
0.9 0.8 0.8
1.4 1.2 1.2
2.3 1.9 1.8
0.9 0.8 0.9
1.7 1.5 1.5
2.7 2.3 2.2
3.2 2.7 2.6
5.2 4.4 4.1
0.6 0.5 0.3
1.1 1.0 0.9
1.4 1.3 1.2
2.5 2.3 2.2
4.2 3.8 3.5
0.2 0.2 0.3
0.9 0.7 0.8
1.5 1.3 1.4
2.6 2.3 2.3
3.0 2.6 2.6
4.7 4.1 4.0