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7. Insert Fuel Filter in the Fuel Tank and using adjustable wrench turn the Filter 90 degrees clockwise.
8. Attach Fuel Line to Fuel Filter neck.
9. Reinstall side cover with screws provided.
ADJUSTING PUMP PRESSURE
After hours of use it may be necessary to adjust the Pump Pressure.
If the heater is not producing a strong flame:
Increase the pressure by turning the adjustment screw clockwise.
If the heater is producing a flame that extends beyond the end of the heater:
Reduce the pressure by turning the adjustment screw counterclockwise.
Adjusting Pump Pressure
Model R75K
MODEL
PUMP
PRESSURE
POSSIBLE CAUSE
Photocell (Flame Color Checking Sensor) Error
Oil Shortage
Bad Photocell (Flame Sensor)
E1
Incomplete Combustion
Contamination of Fuel Filter
Ignition Failure
Temperature Sensor (Thermister) Error
E2
Bad Connection or Sensor Error
LO
Below 1°F
HI
Over 99°F
Heater stops when the temperature reaches to
OH
140°F
Continuously operating without set-
CN
temperature
Blinking Error during operation
WARNING: Never leave the heater unattended while operating.
Disconnect the heater from its power source when not in use.
All manuals and user guides at all-guides.com
Pressure
Gauge
Plug
Relief
Valve
R45K
R75K
3.3 PSI
3.2 PSI
TROUBLESHOOTING
Adjusting Pump Pressure
Model R125K, R175K, R215K
R125K
R175K
5.2 PSI
6.0 PSI
CORRECTIVE ACTION
Charge Fuel (Fill the fuel if needed)
Check and clean or replace Photocell (Flame Sensor)
Using Designated Fuel
Clean or replace Fuel Filter
Check Wire Connection
Check Spark Plug For Normal Firing (clean or replace if needed)
Check Wire Connection
Replace Sensor
Normal
Normal
Restart After Cooling
Normal
Check Error Code
Reset to Restart
-11-
R215K
7.0 PSI
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