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Installation and Maintenance 41
Figure 34
Coil Type P4, 18, 24” Headers with Drain and Vent Location
Figure 35
Coil Type P4, 18, 24” Headers with Drain and Vent Location (6 and 8 Row)
1/2” NPT Vent
1/2” NPT Vent
1/2” NPT Drain
Water Inlet
Water Outlet
Water Outlet
Water Inlet
3”
3”
AIR
FLOW
2 Row 4 Row
1.68”
0.18”
B
A
B
A
Table 38
Coil Type P4, 18, 24” Headers Dimensions (2-Row) in inches
Header A B
18 10.5 6
24 13.5 9
Table 39
Coil Type P4, 18, 24” Headers Dimensions (4-Row) in inches
Header A B
18 7.5 9
24 10.5 12
1/2” NPT Vent
1/2” NPT Vent
1/2” NPT Drain
Water Inlet
Water Outlet
Water Outlet
Water Inlet
3”
AIR
FLOW
6 Row 8 Row
A
7-1/2”
A
4-1/2”
1/2” NPT Drain
Table 40
Coil Type P4, 18, 24” Headers with Drain and Vent Location (8
Row) Dimensions in inches
Header A
18 16.5
24 22.5