Accessories, Technical Service, Spark Transformer

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 nut-driver or standard screwdriver (see Figure 11).

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 1-800-972-7879 for referral information. You can also write to the address listed on the back page of this manual.

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 excess-flow

TECHNICAL

SERVICE

You may have further questions about this heater. If so, contact DESA International’s Technical Service Department at 1-800- 323-5190.

You can also visit DESA International’s Technical Service web site at www.desatech.com.

105342

RM100LP specifications

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