12
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
NOTE : USE ONLY ORIGINAL EQUIPMENT REPLACEMENT PARTS.
Use of alternate or third party components will void any warranty and may cause unsafe
operation condition.
Figure 16
H.) FUEL FILTER
CLEAN OR REPLACE TWICE A HEATING
SEASON OR AS NEEDED.
- Remove side cover screws using medium phillips
screwdriver.
- Remove side cover.
- Pull fuel line off fuel filter neck.
- Turn fuel filter 90˚ to counterclockwise and pull to
remove(DFA-45/70 models).
- Turn fuel filter 90˚ to clockwise and pull to
remove(DFA-125 model).
- Wash fuel filter with clean fuel and replace in tank.
- Attach fuel line to fuel filter neck.
- Reinstall side cover.
I.) PUMP PRESSURE ADJUSTMENT
- Remove pressure gauge plug from end filter cover.
- Install accessory pressure gauge.
- Start heater (See Operation, page 8)
- Adjust pressure (Using a flat blade screwdriver)
Turn relief valve to right to increase pressure.
Turn relief valve to left to decrease pressure.
Set pump pressure as noted below correct for
pressure for each model.
- Stop heater (See Operation, page 8)
- Remove pressure gauge. Replace pressure gauge
plug in end filter cover.
Pressure
Gauge Plug
Side Cover
Fuel Filter
Fuel Line
Pressure Gauge
Relief Valve
MODEL
PUMP PRESSURE
DFA-45
2.8 psi
DFA-70
3.7 psi
DFA-125
5.5 psi
