100,000 Btu/Hr
PROPANE CONSTRUCTION HEATER
SERVICE
PROCEDURES
Continued
SPARK TRANSFORMER
1.Remove base tray.
2.Locate and disconnect white, black, and orange wires from spark transformer.
3.Remove two screws holding spark transformer to base. Remove sheet metal nuts on transformer and install on new transformer. Discard spark transformer.
4.Install new spark transformer. Position new spark transformer in same manner as old transformer.
5.Connect white, black, and orange wires to new spark transformer. Connect wires to correct terminals as noted in step 2.
6.Replace base tray.
Ignitor
Wire
Bushing
Figure 10 - Removing Ignitor Wire from Spark Transformer
IGNITOR
1.Remove motor, motor mount, and fan guard (see Motor, page 7, steps 1 through 6) .
2.Remove orange ignitor wire from ignitor.
3.Remove ignitor mounting screw from rear head using
4.Remove ignitor from rear head.
5.Install new ignitor. Attach ignitor to rear head with ignitor mounting screw.
6.Attach ignitor wire.
7.Check gap between ignitor electrode and nozzle to .13"/.15" (see Figure 12).
8.Test for spark.
WARNING: Make sure heater is disconnected from propane supply. Heater could ignite caus- ing severe burns.
Plug into extension cord and watch for spark between ignitor electrode and nozzle.
9.Place motor, motor mount, and fan guard into rear of heater shell (see Motor, page 7, steps 14 through 18).
Ignitor
Mounting
Screw
Ignitor
Rear Head
Figure 11 - Removing Ignitor Mounting Screw and Ignitor
Burner
Nozzle
Ignitor
Electrode
Gap
Area
Figure 12 - Clearance between Ignitor Electrode and Target Plate
ACCESSORIES
Purchase accessories and parts from your nearest dealer or service center. If your dealer or service center can not supply an accessory or part, either contact your near- est Parts Central (listed in the separate Au- thorized Service Center booklet) or call DESA International’s Parts Department at
Hose: LPA1000 - For 100,000 Btu/Hr Model
A 10 foot hose for locating heater further away from propane tank(s).
Regulator: LPA2150 - For 100,000 Btu/Hr Model
Hose and Regulator Assembly:
LPA3100 - For 100,000 Btu/Hr
Model
Fuel Gas Connector: LPA4020 - For All Models
A POL adapter with
TECHNICAL
SERVICE
You may have further questions about this heater. If so, contact DESA International’s Technical Service Department at
You can also visit DESA International’s Technical Service web site at www.desatech.com.
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