Comfort-Aire HBH Series 6-10 Tons - Manual (Page 40)

IOM Manual HBH SERIES Heat Controller, Inc.
39
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.
Figure 28: Test Mode Pins
� WARNING! �
� CAUTION! �
Table 10a: HB Coax Water Pressure Drop
UNIT OPERATING CONDITIONS
Model
U.S.
GPM
l/s l/m
Pressure Drop, psi [kPa]*
30°F [-1°C] 50°F [10°C] 70°F [21°C] 90°F [32°C]
072
10 0.631 37.85 1.2 [8.3] 0.9 [6.2] 0.5 [3.4] 0.3 [2.1]
15 0.946 56.781 3.3 [22.8] 2.8 [19.08] 2.1 [14.5] 1.8 [12.4]
20 1.262 75.708 6.2 [42.7] 5.3 [36.5] 4.2 [29.0] 3.8 [26.2]
096
12 0.757 45.425 2.1 [14.5] 1.7 [11.7] 1.3 [9.0] 1.1 [7.6]
18 1.136 68.137 5.3 [36.5] 4.5 [31.0] 3.6 [24.8] 3.3 [22.8]
24 1.514 90.85 9.3 [64/1] 7.9 [54.5] 6.6 [45.5] 6.1 [42.1]
120
15 0.946 56.781 4 [27.6] 3.2 [22.1] 2.2 [15.2] 2 [13.8]
22.5 1.42 85.172 8.6 [59.3] 7.2 [49.6] 5.5 [37.9] 5.1 [35.2]
30 1.893 113.562 14.5 [100] 12.2 [83.4] 9.8 [67.6] 9.2 [63.4]
*Note: To convert kPa to millibars, multiply by 10.
Short test pins
together to enter Test
Mode and speed-up
timing and delays for
20 minutes.
Unit Start-Up Procedure
CAUTION!
! !
WARNING!
! !