Nozzle; Spark Plug; Photocell - Dura Heat DuraHeat DFA-45 User Manual

NEVER LEAVE THE HEATER
UNATTENDED WHILE BURNING!
E.) NOZZLE
REMOVE DIRT IN NOZZLE AS NEEDED
(SEE PAGE 13).
- Remove upper shell (See page 9).
- Remove fan blade (See page 10).
- Remove fuel and air line hoses from burner head.
- Remove ignitor wire from spark plug.
- Remove three screws using medium phillips
screwdriver and remove burner head from combustion
chamber.
- Remove spark plug from burner head using medium
phillips screwdriver.
- Carefully remove nozzle from burner head using 5/8"
socket wrench.
- Blow compressed air through face of nozzle. (this will
remove any dirt in nozzle)
- Reinstall nozzle into burner head and tighten firmly.
(80~110 inch-pounds)
- Install spark plug in burner head.
- Attach burner head to combustion chamber.
- Attach ignitor wire to spark plug.
- Attach fuel and air line hoses to burner head.
- Reinstall fan blade and upper shell.
F.) SPARK PLUG
CLEAN AND REGAP EVERY 600 HOURS
OPERATION OR REPLACE AS NEEDED.
- Remove upper shell (See page 10).
- Remove fan (See page 10).
- Remove ignitor wire from spark plug.
- Remove spark plug from burner head using medium
phillips screwdriver.
- Clean and regap spark plug electrodes to 3.5mm gap.
( 0.138 )
- Install spark plug in burner head.
- Attach ignitor wire to spark plug.
- Reinstall fan and upper shell.
G.) PHOTOCELL
CLEAN PHOTOCELL ANNUALLY OR AS NEEDED.
- Remove upper shell (See page 10).
- Remove fan (See page 10).
- Remove photocell from it's mounting.
Clean photocell lens with cotton swab.
TO REPLACE : Remove side cover near on/off switch.
- Disconnect wires from circuit board and remove

photocell.

- Install new photocell and attach wires to circuit board.
- Replace fan and upper shell.
Air Line Hose

Nozzle

Nozzle Face
Burner Head
Burner Head
Side cover
Photocell
wires
circuit
board
11
Combustion Chamber
Screw
Burner Head

Spark Plug

Ignitor Wire
Fuel Line Hose
Fuel Line Fitting
Air Line Fitting
Figure 13
Gap
Spark Plug
Figure 14
Photocell
Install Photocell
1)Incorrect
2)Correct
Figure 15
Spark Plug
Ignitor
Wire
Photocell
lens