Operating Guide

H.) FUEL FILTER
CLEAN OR REPLACE TWICE A HEATING
SEASON OR AS NEED.
- Remove side cover screws using medium phillips
screwdriver.
- Disconnect switch wires from power switch and
remove side cover.
- Pull fuel line off fuel filter neck.
- Turn fuel filter 90˚ to counter clockwise and pull to
remove (KFA80C Model only).
- Turn fuel filter 90˚ to clockwise and pull to remove
(KFA135C/220C Models only).
- Wash fuel filter with clean fuel and replace in tank.
- Attach fuel line to fuel filter neck.
- Replace switch wires to power switch.
- Reinstall side cover.
I.) PUMP PRESSURE ADJUSTMENT
NOTE: If the pump pressure needs to be adjusted,
make sure the heater is running on the
HIGH BTU setting.
- Push the BTU control switch to HIGH .
(See Operation on page 8)
- Start heater (See Operation, page 8)
Allow motor to reach full speed
- Adjust pressure (Using a flat blade screwdriver)
Turn relief valve to clockwise to increase pressure.
Turn relief valve to counter clockwise to decrease
pressure.
- Stop heater (See Operation, page 8)
NOTE : USE ONLY ORIGINAL EQUIPMENT
REPLACEMENT PARTS.
Use of alternate or third party components
will void any warranty and may cause unsafe
operating condition.
Pump Pressure
High BTU level Low BTU level
KFA80C
KFA135C
KFA220C
13
NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
Figure 20. Adjusting Pump Pressure
MODEL
3.8 psi
5.5 psi
8.5 psi
2.7 psi
3.5 psi
6.5 psi
Figure 19. Fuel Filter Replacement
Fuel Filter
Fuel line
Switch Wires
Screw
Side Cover
Power Switch
Flat blade
Screwdriver
Pressure Gauge
Relief Valve