Page 6
SPECIFICATIONS GAS HEAT
Model No. 036, 048
060, 074
036, 048
060, 074
048
060, 074
Heat Input Type Standard (2 Stage) Medium (2 Stage) High (2 Stage)
Input
Btuh
1st Stage 81,000 113,000
2nd Stage 108,000
Output
Btuh
1st Stage 43,000 66,000 92,000
2nd Stage 87,000 121,000
Temperature
1st stage 30 - 60
2nd Stage 30 - 70
1
81% 81% 81%
Gas Supply Connections 1/2 in. NPT
Recommended Gas Supply Pressure - Nat. / LPG 7 in. w.g. / 11 in. w.g.
Gas Supply Pressure
Range
Min./Max. (LPG)
1
HIGH ALTITUDE DERATE
NOTE - Units may be installed at altitudes
up to 2000 ft. above sea level without any
units must be derated to match information
ft. unit must be derated 2% for each 1000 ft.
above sea level.
NOTE - This is the only permissible derate
for these units.
Heat Input Type Altitude Feet
Gas Manifold Pressure
in. w.g.
Input Rate (Btuh)
Natural Gas LPG/Propane
Standard (2 stage) 3.0/1.7 60,000 / 49,000
Medium (2 stage) 3.0/1.7
High (2 stage) 3.0/1.7 139,000 / 104,000
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