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TABLE 19
Manifold Pressure Settings
Unit
Input
Gas
Orice Size
0 - 7500 ft.
Orice Size
7501 -
10,000 ft
1.
Manifold
Pressure in. wg.
0 - 4500 ft
Manifold
Pressure in.
wg. 4501 -
7500 ft
Manifold Pressure
in. wg. 7500 -
7501 - 10,000 ft
2
Supply Line
Pressure
in. w.g.
Low
Firer
High
Fire
Low
Fire
High
Fire
Low
Fire
High
Fire
Min Max
070
Natural 0.63 0.55 1.7 3.5 1.6 3.4 1.7 3.5 4.5 13.0
LP/propane
3
0.34 0.32 4.5 10.0 4.5 10.0 4.5 10.0 11.0 13.0
090
Natuarl 0.63 0.55 1.7 3.5 1.5 3.2 1.7 3.5 4.5 13.0
LP/propane
3
0.34 0.32 4.5 10.0 4.5 10.0 4.5 10.0 11.0 13.0
110
Natural 0.63 0.55 1.7 3.5 1.5 3.2 1.7 3.5 4.5 13.0
LP/propane
3
0.34 0.32 4.5 10.0 4.5 10.0 4.5 10.0 11.0 13.0
135
Natural 0.63 0.55 1.7 3.5 1.6 2.8 1.7 3.5 4.5 13.0
LP/propane
3
0.34 0.32 4.5 10.0 4.5 10.0 4.5 10.0 11.0 13.0
1
This is the only permissible derate for these units.
2
Natural gas high altitude orice kit required.
3
A natural to L.P. propane gas changeover kit is necessary to convert this unit. Refer to the changeover kit installation instruction for the conver-
sion procedure.
NOTE - Units may be installed at altitudes up to 4500 ft. above sea level without modications.
TABLE 20
Unit
Input
High Altitude Pressure Switch Kit
0 - 4500 ft. 4501 - 7500 ft. 7501 - 10,000 ft.
070 No Change No Change 73W35
090 No Change 69W56 73W35
110 No Change 69W56 73W35
135 No Change 73W33 73W34
TABLE 21
Honeywell / Resideo Gas Valve Conversion Kits
Unit
Input
High Altitude
Natural Gas
Orice Kit
Natural Gas to LP/
Propane Kit
LP/
Propane
to Natural
Gas Kit
7501 -
10,000 ft
0 - 7500 ft
7501 -
10,000 ft
0 - 7500 ft
070
73W37 51W02 73W38 69W79
090
110
135
TABLE 22
White Rodgers Gas Valve Conversion Kits
Unit
Input
High Altitude
Natural Gas
Orice Kit
Natural Gas to LP/
Propane Kit
LP/
Propane
to Natural
Gas Kit
7501 -
10,000 ft
0 - 7500 ft
7501 -
10,000 ft
0 - 7500 ft
070
73W37 11K51 11K46 77W09
090
110
135
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