McQuay IM 937 7
Installation
Figure 8: Water Regulating Valve Pressure Drop, Head
Pressure Control
Figure 9: Hot Water Coil Pressure Drop, SWP 018 to 040
Figure 10: Hot Water Coil Pressure Drop, SWP 045 to 105
Condensate Drain Connection
The condensate drain connection is 1 1/8" O.D.S. copper and
is located on the same end of the unit as the condenser water
connections. The drain is internally trapped at the factory,
requiring no external trap. Pitch the condensate line away from
the unit with a minimum slope of 1/8" per foot.
Keep drain pans and the drain trap clean by periodic cleaning.
A cleanout is provided as standard in the trap to aid in
cleaning.
40
10
1
0.1
10
100
500
Condenser Flow Rate (gpm)
Pressure Drop (ft H
2
O)
018-040
045-095
Water Flow Rate (gpm)
Pressure Drop (ft H
2
O)
100
10
100
200
10
1
018
023-028
035
040
Water Flow Rate (gpm)
Pressure Drop (ft H
2
O)
100
10
100
200
10
1
045
105
065-095
055