Desa Btu - Manual (Page 6)

www.desatech.com 113325-01C 6
REMEDY
1. Open propane supply valve
slowly
2. Replace burner/valve as-
sembly
3. Assure ignitor electrode gap
is 0.120" (3.04 mm). Check
wire lead for damage. Replace
piezo ignitor and/or ignitor
electrode as necessary
1. Relight, hold automatic control
valve button in 45 seconds
2. Check propane tank(s) for
proper gas supply
3. Tighten connection or replace
thermocouple
4. Replace automatic control
valve assembly
1. Check gas supply; check
regulator output
2. Consult propane gas supplier
3. Replace burner assembly
POSSIBLE CAUSE
1. Propane supply valve closed
on propane tank(s)
2. Blockage in burner/valve
assembly
3. Piezo ignition system not
sparking
1. Not enough warm-up time
2. Low gas pressure
3. Thermocouple loose or needs
to be replaced
4. Automatic control valve
needs to be replaced
1. Low gas pressure
2. Low fuel supply
3. Plugged gas orifices
SYMPTOM
Burner fails to light
Burner lights but goes out when
automatic control valve button
is released
Maximum burn rate is low
TROUBLESHOOTING
WARNING: Never attempt to service heater while it is connected
to propane supply, operating, or hot. Severe burns can occur.
SPECIFICATIONS
• Rating: High - 25,000 Btu/Hr (26.375 Kj/Hr)
Low - 15,000 Btu/Hr (15.826 Kj/Hr)
• Fuel - Propane Vapor Only
• Fuel Consumption/Hour:
Gallons (Liters) - Min 0.17 (0.64), Max 0.27 (1.02)
Pounds (kg) - Min 0.70 (0.32), Max 1.16 (0.53)
• Supply Pressure (To Regulator):
Maximum - Tank Pressure
Minimum - 275.8 kPa (40 psi)
• Regulator Outlet Pressure: High - 103.4 kPa
(15 psi), Low - 34.4 kPa (5 psi)
TECHNICAL SERVICE
You may have further questions about installation,
operation, or troubleshooting. If so, contact DESA
Heating Productsʼ Technical Service Department
at 1-866-672-6040. When calling please have your
model and serial numbers of your heater ready.
You can also visit DESA Heating Productsʼ techni-
cal services web site at www.desatech.com.