Page 22
TABLE 11
Supply and Manifold Pressure Settings at all Altitudes
Model Input
Size
Gas
Manifold Pressure in. wg.
Supply Pressure in.wg.
0-2000 ft 2001-4500 ft. 4501-7500 ft 7501 - 10,000 ft
Min Max
045
Nat 3.5 3.2 3.0 3.5 4.5 13.0
LP/propane 10.5 10.0 10.0 10.0 11.0 13.0
070
Nat 3.5 3.2 2.8 3.5 4.5 13.0
LP/propane 10.0 10.0 10.0 10.0 11.0 13.0
090
Nat 3.5 3.2 2.7 3.5 4.5 13.0
LP/propane 10.0 10 9.6 10.0 11.0 13.0
110
Nat 3.5 3.5 3.0 3.5 4.5 13.0
LP/propane 10.0 10.0 9.6 10.0 11.0 13.0
135
Nat 3.5 3.5 2.9 3.5 4.5 13.0
LP/propane 10.0 10.0 9.6 10.0 11.0 13.0
TABLE 12
Pressure Switch and Gas Conversion Kits at all Altitudes
Model
Input Size
High Altitude Pressure Switch Kit
High Altitude
Natural Gas Burner
Orifice Kit
Natural Gas to LP/Propane
Burner Orifice Kit
LP/Propane to
Natural Gas Burner
Orifice Kit
0-4500 ft 4501-7500 ft 7501 - 10,000 ft 7501 - 10,000 ft 0 - 7500 ft 7501 - 10,000 ft 0 - 7500 ft
045
No Change
8052W 80W51
73W37 70W89 76W15 73W81
070 80W52 80W51
090 80W52 80W51
110 80W57 80W52
135 80W52 80W51
NOTE - A natural to LP./Propane gas changeover kit is necessary to convert this unit. Refer to the changeover kit installation instruction for the conversion
procedure.
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