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Table 7: Superheat and Subcooling - 100% OA
Table 8: Superheat and Subcooling - Recirculating
Ambient Air
Temperature
95°F
85°F
75°F
65°F
55°F
45°F
Subcooling
10° - 12°F
8° - 10°F
6°F - 10°F
Superheat
8°F - 15°F
6°F - 15°F
6°F - 10°F
Note: Subcooling and superheat readings must be taken with the reheat circuit disabled and in the cooling mode.
Table 9: Superheat and Subcooling - Heat Pump
Ambient Air
Temperature
95°F
85°F
75°F
65°F
55°F
45°F
Subcooling
8° - 12°F
8° - 10°F
In Heating Mode
Superheat
6°F - 15°F
In Heating Mode
Note: Subcooling and superheat readings must be taken with the reheat circuit disabled and in the cooling mode.
Table 6: Hot Water Heating Coil Flow
Rate and Pressure Drop
Model
Cabinet
Nominal GPM
(Water Only)
Pressure Drop
(FT, H2O)
Connection Size
(Sweat, in.)
096 - 120
B
50.0
4.31
1-5/8
150 - 210
C
70.0
6.05
1-5/8
240 - 420
D
120.0
8.21
3-1/8
480 - 840
E
160.0
12.9
3-1/8
Ambient Air
Temperature
95°F
85°F
75°F
65°F
55°F
45°F
Subcooling
8°F - 10°F
In Heating Mode
Superheat
10°F - 13°F
In Heating Mode
Note 1:
Subcooling readings must be taken with the reheat circuit disabled and in the cooling mode.
On water-source units, water regulating valves need to be open 100%
Note 2:
Circuit #1 Subcooling and Superheat readings must be taken with circuit #2 disabled/not running.
Note 3:
Circuit #2 Subcooling and Superheat readings must be taken with circuit #1 energized/running.
PR Series Installation, Operation, and Maintenance Manual
