![background image](http://html1.mh-extra.com/html/desa/cf18n/cf18n_owners-operation-and-installation-manual_2485763031.webp)
31
101308
TECHNICAL
SERVICE
You may have further questions about installation, operation, or troubleshooting.
If so, contact DESA International’s Technical Service Department at
1-800-DESA LOG (1-800-337-2564).
18" Thermostat- 24" Thermostat- 30" Thermostat-
Controlled
Controlled
Controlled
Btu (Variable)
16,000/26,000
20,000/33,000
21,500/36,000
Type Gas
Natural Gas Only
Natural Gas Only
Natural Gas Only
Ignition
Piezo
Piezo
Piezo
Manifold Pressure
3.4" W.C.
3.4" W.C.
3.4" W.C.
Inlet Gas
Pressure (in. of water)
Maximum
10.5"
10.5"
10.5"
Minimum*
5"
5"
5"
* For purpose of input adjustment
Shipping Weight
36 lbs.
38 lbs.
40 lbs.
SPECIFICATIONS
18" Manually-
24" Manually-
30" Manually-
Controlled
Controlled
Controlled
Btu (Variable)
8,000/14,000/
10,000/17,000/
11,000/18,000/
26,000
33,000
36,000
Type Gas
Natural Gas Only
Natural Gas Only
Natural Gas Only
Ignition
Piezo
Piezo
Piezo
Manifold Pressure
3.4" W.C.
3.4" W.C.
3.4" W.C.
Inlet Gas
Pressure (in. of water)
Maximum
10.5"
10.5"
10.5"
Minimum*
5"
5"
5"
* For purpose of input adjustment
Shipping Weight
36 lbs.
38 lbs.
40 lbs.
When gas pressure is too low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
When gas quality is bad
• pilot will not stay lit
• burners will produce 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.
SERVICE
HINTS
Summary of Contents for CF18N
Page 38: ...38 101308 NOTES...
Page 39: ...39 101308 NOTES...