Page 13
Installation Manual - SRF40
ENGLISH
2.7 Specifications
Propane
Natural
Altitude (ft)
0 - 4,500
0 - 4,500
Max. Input (BTU/Hr)
45,000
47,500
Min. Input (BTU/Hr)
35,000
30,000
KWH (Max.)
13.19
13.92
KWH (Min.)
10.26
8.79
Maximum Gas Supply Pressures
(inches water column)
14.0
14.0
Minimum Gas Supply Pressures
(inches water column)
10.8
4.5
Manifold Gas Supply Pressures
(inches water column)
10.0
3.5
Burner orifice Front
#56
2.25 mm
Burner orifice Rear
1.55 mm
2.45 mm
Efficiency
72.78 %
66.37 %
Air Shutter Opening Front
Fully Open
Fully Closed
Air Shutter Opening Rear
Fully Open
1/18" Closed
Gas Inlet Shut-off Valve (pipe)
1/2" NPT
1/2" NPT
Vent Size
5" x 8"
5" x 8"
Blower spec
120 V, 60 HZ, 33W, 76 CFM
Light Bulb replacement
35w Clear Halogen, BI-Pin 6.35 mm base, 120 vac, UL
NOTICE:
Air shutter settings are factory minimum settings. Some venting configurations may require minor
air shutter adjustments for optimum performance.
