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Installation and Service Manual
Refer to Circulating Pump on page 46 for information relating to
pump wiring.
TABLE-P
AMP Draw Data
Btu/Hr
Input
Controls Fans Pump
Approximate
Total Amps
500,000 3.6 2.7 5.0 11.3
650,000 5.4 3.4 5.0 13.8
750,000 5.4 3.4 5.0 13.8
990,000 7.3 3.2 7.4 17.9
1,260,000 7.3 3.2 7.4 17.9
1,440,000 7.3 6.7 7.4 21.4
1,800,000 7.3 6.7 8.8 22.8
2,070,000 7.3 6.7 8.8 22.8
45
Pipe Size Requirements
The pipe sizing chart provides the minimum pipe size for common
manifold piping to ensure adequate flow.
TABLE-Q
Pipe Sizing Chart
500,000 - 750,000 Btu/hr Models
Number of Units
Common Pipe
Size (Min.)
1 2"
2 3"
3 3 1/2"
4 4"
5 5"
6 5"
990,000 - 2,070,000 Btu/hr Models
Number of Units
Common Pipe
Size (Min.)
1 2 1/2"
2 4"
3 4"
4 5"
5 6"
6 6"