TECHNICAL
SERVICE
SPECIFICATIONS
SERVICE
HINTS
100792
You may have further questions about installation, operation, or troubleshooting.
If so, contact DESA International's Technical Service Department at 1-800-323-
5190.
BTU
Type Gas
Ignition
Pressure Regulator Setting 3.5" W.C.
Inlet Gas Pressure
Maximum
Minimum
Dimensions, Inches
Heater (H x W x D) 25 x 27
Shipping Weight (pounds) 97
Flue Vent Size
Orifice Size
** When equipped with blower
Note:
These heaters are certified for elevations of 0-4500 feet above sea level. For
elevations above 2000 feet, de-rate heater 4% for each 1000 feet above sea level.
When gas pressure is too low
• pilot will not stay lit
• burner will have delayed ignition
• heater will not produce specified heat
When gas quality is bad
• pilot will not stay lit
• burner will produce yellow flames and soot
• heater will backfire when lit
You may feel your gas pressure is too low or gas quality is bad. If so, contact your
local natural gas supplier.
35,000 BTU/Hr 50,000 BTU/Hr
Model
Model
35,000
50,000
Natural Only
Natural Only
Piezo
Piezo
3.5" W.C.
7" W.C.
7" W.C.
5" W.C.
5" W.C.
1
/
x 16
28 x 32
4
133**/120
4" dia.
4" dia.
34 drill, ø .111
29 drill, ø .136
65,000 BTU/Hr
Model
65,000
Natural Only
Piezo
3.5" W.C.
7" W.C.
5" W.C.
1
3
/
x 16
31 x 37
/
x 16
2
4
158**/145
5" dia.
3.8 mm, ø .1496
35