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SERVICE PROCEDURES
Continued
5a. If replacing fan, remove old fan and discard. Go to step 7 below.
5b. If cleaning fan, use soft cloth moistened with kerosene or solvent.
6. Dry fan thoroughly.
7. Place fan onto motor shaft. Make sure set screw contacts flat sur-
face on motor shaft. Tighten set screw firmly (40-50 inch-pounds).
8. Place motor and fan guard into rear of heater shell. Make sure
power cord is properly located (see Figure 12, page 8).
9. Insert three screws through heater shell and into fan guard.
Tighten screws firmly.
IGNITOR
1. Remove motor and fan guard from heater (see Motor, page 8,
steps 1 and 2).
2. Remove black ignitor wire from piezo ignitor. Access ignitor
wire through underside of heater base (see Figure 13). Push
wire up through notch in filler panel.
3. Remove ignitor mounting screw from rear head using nut-driver
or standard screwdriver (see Figure 14).
4. Remove ignitor from rear head.
5. Install new ignitor. Attach ignitor to rear head with ignitor
mounting screw.
Piezo Ignitor
Ignitor Wire
Figure 13 - Removing Ignitor Wire from Piezo Ignitor
Ignitor
Figure 14 - Removing Ignitor Mounting Screw and Ignitor
For more information, visit www.desatech.com
For more information, visit www.desatech.com
104163-01H
6. Run ignitor wire from new ignitor through notch in filler panel.
Attach ignitor wire to piezo ignitor.
7. Set gap between ignitor electrode and target plate to .17" (see
Figure 15).
from propane supply. Heater could ignite causing
severe burns.
8. Test for spark. Push piezo ignitor button and watch for spark
between ignitor electrode and target plate.
9. Place motor and fan guard into rear of heater shell (see Motor,
page 8, steps 9 and 10).
Underside
Figure 15 - Clearance between Ignitor Electrode and Target
of Heater
Plate
Mounting Screw
SERVICE PROCEDURES
WARNING: Make sure heater is disconnected
Ignitor Electrode
9 9
Gap
Area
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