Desa Tech RLP100, RM100LP Owner's Manual

PROPANE CONSTRUCTION FORCED AIR HEATER

OWNER’S MANUAL

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RM100LP,

RLP100

Variable 65,000, 85,000, and 100,000 Btu/Hr

IMPORTANT: Read and understand this manual before assembling, starting, or servicing heater. Improper use of heater can cause serious injury. Keep this manual for future reference.

GENERAL HAZARD WARNING:

FAILURE TO COMPLY WITH THE PRECAUTIONS AND INSTRUCTIONS PROVIDED WITH THIS HEATER, CAN RESULT IN DEATH, SERIOUS BODILY INJURY AND PROPERTY LOSS OR DAMAGE FROM HAZARDS OF FIRE, EXPLOSION, BURN, ASPHYXIATION, CARBON MONOXIDE POISONING, AND/OR ELECTRICAL SHOCK.

ONLY PERSONS WHO CAN UNDERSTAND AND FOLLOW THE INSTRUCTIONS SHOULD USE OR SERVICE THIS HEATER.

IF YOU NEED ASSISTANCE OR HEATER INFORMATION SUCH AS AN INSTRUCTIONS MANUAL, LABELS, ETC. CONTACT THE MANUFACTURER.

TABLE OF CONTENTS

SAFETY INFORMATION ............................................................ 2

PRODUCT IDENTIFICATION ..................................................... 3

UNPACKING............................................................................... 3

THEORY OF OPERATION ......................................................... 3

PROPANE SUPPLY.................................................................... 4

INSTALLATION ........................................................................... 4

VENTILATION............................................................................. 4

OPERATION ............................................................................... 5

STORAGE................................................................................... 5

MAINTENANCE .......................................................................... 5

TROUBLESHOOTING ................................................................ 6

SERVICE PROCEDURES .......................................................... 7

SPECIFICATIONS ...................................................................... 9

WIRING DIAGRAM ..................................................................... 9

ACCESSORIES .......................................................................... 9

ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ....... 10

TECHNICAL SERVICE ............................................................. 12

REPLACEMENT PARTS .......................................................... 12

OWNER’S REGISTRATION FORM.......................................... 13

WARRANTY INFORMATION...................................... Back Cover

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SAFETY INFORMATION

WARNINGS

WARNING: This product contains and/or generates chemicals known to the State of California to cause cancer or birth defects, or other reproductive harm.

WARNING: FIRE, BURN, INHALATION, AND EXPLOSION HAZARD. KEEP SOLID COMBUSTIBLES, SUCH AS BUILDING MATERIALS, PAPER OR CARDBOARD, A SAFE DISTANCE AWAY FROM THE HEATER AS RECOMMENDED BY THE INSTRUCTIONS. NEVER USE THE HEATER IN SPACES WHICH DO OR MAY CONTAIN VOLATILE OR AIRBORNE COMBUSTIBLES, OR PRODUCTS SUCH AS GASOLINE, SOLVENTS, PAINT THINNER, DUST PARTICLES OR UNKNOWN CHEMICALS.

WARNING: NOT FOR HOME OR RECREATIONAL VEHICLE USE.

The heater is designed for use as a construction heater in accordance with ANSI Z83.7/CGA 2.14. Other standards govern the use of fuel gases and heating products for specific uses. Your local authority can advise you about these. The primary purpose of construction heaters is to provide temporary heating of buildings under construction, alteration or repair. Properly used, the heater provides safe economical heating. Products of combustion are vented into the area being heated.

We cannot foresee every use which may be made of our heaters.

Check with your local fire safety authority if you have questions about heater use.

Other standards govern the use of fuel gases and heat producing products for specific uses. Your local authorities can advise you about these.

Carbon Monoxide Poisoning: Some people are more affected by

carbon monoxide than others. Early signs of carbon monoxide poisoning resemble the ﬂu, with headaches, dizziness, and/or nausea. If you have these signs, the heater may not be working properly. Get fresh air at once! Check for proper ventilation and have heater serviced.

Propane Gas: Propane gas is odorless. An odor-making agent is

added to propane gas. The odor helps you detect a propane gas leak. However, the odor added to propane gas can fade. Propane gas may be present even though no odor exists.

Make certain you read and understand all warnings. Keep this manual for reference. It is your guide to safe and proper operation of this heater.

• Install and use heater with care. Follow all local ordinances and codes. In the absence of local ordinances and codes, refer to the

Standard for Storage and Handling of Liquefied Petr oleum Gas, ANSI/NFPA 58 and the Propane Installation Code, CAN/CGA B149.2. This instructs on the safe storage and handling of pro-

pane gases.

• Use only the electrical voltage and frequency speciﬁed on model plate. The electrical connections and grounding of the heater shall follow the National Electric Code, ANSI/NFPA 70 or the

Canadian Electrical Code, Part 1.

• Electrical grounding instructions — This appliance is equipped with a three-prong (grounding) plug for your protection against shock hazard and should be plugged directly into a properly grounded three-prong receptacle or extension cord.

• This product has been approved for use in the Commonwealth of Massachusetts.

• Use only the hose and factory preset regulator provided with the heater.

• Use only propane gas set up for vapor withdrawal.

• Provide adequate ventilation. Before using heater, provide at least a three-square-foot (91 cm) opening of fresh, outside air for each 100,000 Btu/Hr of rating.

• For indoor use only. Do not use heater outdoors.

• Do not use heater in occupied dwellings or in living or sleeping quarters.

• Do not use heater in basement or below ground level. Propane gas is heavier than air. If a leak occurs, propane gas will sink to the lowest possible level.

• Keep appliance area clear and free from combustible materials, gasoline, paint thinner, and other flammable vapors and liquids.

• Do not use heater in areas with high dust content. Dust is combustible.

• Minimum heater clearances from combustible materials: Outlet: 8 Ft. (2.44 m) Sides: 2 Ft. (60.96 cm) Top: 6 Ft. (1.83 m) Rear: 2 Ft. (60.96 cm)

• Keep heater at least six feet from propane tank(s). Do not point heater at propane tank(s) within 20 feet.

• Keep propane tank(s) below 100° F (37.8° C).

• Check heater for damage before each use. Do not use a damaged heater.

• Check hose before each use of heater. If highly worn or cut, replace with hose specified by manufacturer before using heater.

• Locate heater on stable and level surface if heater is hot or operating.

• Never block air inlet (rear) or air outlet (front) of heater.

• Keep heater away from strong drafts, wind, water spray , rain, or dripping water.

• Do not leave heater unattended.

• Keep children and animals away from heater.

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SAFETY INFORMATION

PRODUCT IDENTIFICATION

UNPACKING

THEORY OF OPERATION

SAFETY INFORMATION

Continued

• Never move, handle, or service a hot or operating heater. Severe burns may result. Y ou must wait 15 minutes after turning heater of f.

• To prevent injury, wear gloves when handling heater.

• Never attach duct work to heater.

• Do not alter heater. Keep heater in its original state.

• Do not use heater if altered.

• Turn off propane supply to heater when not in use.

• Use only original replacement parts. This heater must use design-specific parts. Do not substitute or use generic parts. Improper replacement parts could cause serious or fatal injuries.

PRODUCT IDENTIFICATION

Hot Air Outlet (Front)

Handle

Fan Guard

Motor Mount

Control Knob

Inlet Connector

Hose /Regulator Assembly

Power Cord

UNPACKING

1. Remove all packing items applied to heater for shipment. Keep plastic cover caps (attached to inlet connector and hose/regulator assembly) for storage.

2. Remove all items from carton.

3. Check all items for shipping damage. If heater is damaged, promptly inform dealer where you bought heater.

THEORY OF OPERATION

The Fuel System: The hose/regulator assembly attaches to the

propane gas supply. The propane gas moves through the automatic control valve and out the nozzle.

The Air System: The motor turns the fan. The fan pushes air into

and around the combustion chamber. This air is heated and provides a stream of clean, hot air.

The Ignition System: The spark transformer and ignitor lights the

main burner.

The Safety Control System: This system causes the heater to shut

down if the flame goes out.

Note:

Some parts are located differently on some models.

Combustion Chamber

Clean Heated Air Out (Front)

Air For Combustion And Heating

Figure 2 - Cross Section Operational View

Nozzle

Fuel

Fan

Cool Air In (Back)

Power Cord

Hose/ Regulator Assembly

Figure 1 - 100,000 Btu/Hr Model

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PROPANE SUPPLY INSTALLATION

VENTILATION

PROPANE SUPPLY

Propane gas and propane tank(s) are to be furnished by the user. Use this heater only with a propane vapor withdrawal supply

system. See Chapter 5 of the Standard for Storage and Handling of

Liquefied Petroleum Gas, ANSI/NFPA 58 and the Propane Installation Code CAN/CGA B149.2. Your local library or fire depart-

ment will have this booklet. The amount of propane gas ready for use from propane tanks varies.

Two factors decide this amount:

1. The amount of propane gas in tank(s)

2. The temperature of tank(s) The chart below shows the number of 100 pound (45 kg) tanks

needed to run this heater.

Temperature [°F (°C)] Number of tanks,

at Tank 100,000 Btu/Hr

32°F (0°C) 2

20°F (-6.7°C) 2

10°F (-12.2°C) 3

0°F (-17.8°C) 3

-10°F (-23.3°C) (Use larger tank)

-20°F (-28.9°C) (Use larger tank)

Less gas is vaporized at lower temperatures. You may need two or more 100 pound (45 kg) tanks or one larger tank in colder weather. Your local propane gas dealer will help you select the proper supply system. The minimum surrounding air temperature rating for each heater is -20°F (-29°C).

3. Connect hose to inlet connector. T ighten firmly using a wrench.

IMPORTANT:

Extra hose or piping may be used if needed. Install extra hose or piping between hose/regulator assembly and propane tank. You must use the regulator supplied with heater.

4. Open propane supply valve on propane tank(s) slowly.

Note:

If not opened slowly, excess-flow check valve on propane tank will stop gas flow. If this happens, close propane supply valve and open again slowly.

5. Check all connections for leaks.

6. Close propane supply valve.

Supply Valve

Propane Tank

Figure 3 - Regulator With Vent Pointing Down

100,000 Btu/Hr Model Shown

Fuel Gas Connector

Vent (pointing down)

Hose

Regulator

INSTALLATION

WARNING: Review and understand the warnings in the needed to safely operate this heater. Follow all local codes when using this heater.

for leaks after installing or servicing. Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.

1. Provide propane supply system (see Propane Supply above).

2. Connect fuel gas connector fitting on hose/regulator assembly

Safety Information

section, page 2. They are

WARNING: Test all gas piping and connections

to propane tank(s). Turn counterclockwise into threads on tank valve. Tighten firmly using wrench.

IMPORTANT:

Tighten regulator with vent pointing down. Pointing vent down protects regulator from weather damage.

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Inlet Connector

Figure 4 - Hose and Inlet Connector

Hose

VENTILATION

WARNING: Follow the minimum fresh, outside air ventilation requirements. If proper fresh, outside air ventilation is not provided, carbon monoxide poisoning can occur. Provide proper fresh, outside air ventilation before running heater.

Provide a fresh air opening of at least three square feet for each 100,000 Btu/Hr rating. Provide extra fresh air if more heaters are being used.

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OPERATION

STORAGE

MAINTENANCE

OPERATION

WARNING: Review and understand the warnings in the needed to safely operate this heater. Follow all local codes when using this heater.

TO START HEATER

1. Follow all installation, ventilation and safety information.

2. Locate heater on stable and level surface. Make sure strong

3. Make sure the control knob is in the OFF position.

4. Plug power cord of heater into a three-prong, grounded extension

5. Plug extension cord into a 120 volt/60 hertz, 3-hole, grounded

6. Open propane supply valve on propane tank(s) slowly.

7. Press and hold in control knob. Turn counterclockwise to the

8. After heater ignites, wait 30 seconds. This activates the auto-

9. When burner remains lit, set heater at the desired heat level by

Safety Information

drafts do not blow into front or rear of heater.

cord. Extension cord must be at least six feet (1.83 m) long, UL/ CSA listed, and of a proper size.

Extension Cord Size Requirement

Up to 100 feet (30.48 m) long, use 16 AWG rated cord. 101 to 200 feet (30.78 to 6.96 m) long, use 14 AWG rated cord.

outlet. Motor will start. Fan will turn, forcing air out front of heater.

not opened slowly, excess-flow check valve on propane tank will stop gas flow. You may hear a click from the excess-flow check valve closing. If this happens, reset the excess-flow check valve by closing propane supply valve and open again slowly .

LOW position. Heater should ignite within a few seconds.

Note:

If heater fails to ignite, hose may have air in it. If so,

keep control knob pressed and wait 20 seconds. Release automatic control valve button and wait 20 seconds for unburned fuel to exit heater. Repeat step 7.

matic control system. Release the control knob.

turning the control valve counterclockwise. If burner goes out, turn off gas. Turn control knob fully clockwise to the lowest position. Check fuel supply. If adequate fuel is available, restart heater beginning at step 1.

section, page 2. They are

Note:

STORAGE

CAUTION: Disconnect heater from propane sup-

ply tank(s).

1. Store propane tank(s) in safe manner. See Chapter 5 of Standard for Storage and Handling of Liqueﬁed Petr oleum Gases, ANSI/NFPA 58 and the Propane Installation Code CAN/CGA B149.2. Follow all local codes. Always store propane tanks

outdoors.

2. Place plastic cover caps over brass ﬁttings on inlet connector and hose/regulator assembly.

3. Store in dry , clean, and safe place. Do not store hose/regulator assembly inside heater combustion chamber.

4. When taking heater out of storage, always check inside of heater. Insects and small animals may place foreign objects in heater. Keep inside of heater free from combustible and foreign objects.

MAINTENANCE

WARNINGS

• Never service heater while it is plugged in, connected to propane supply, operating, or hot. Severe burns and electrical shock can occur.

• Keep heater clear and free from combustible materials, gasoline, and other flammable vapors and liquids.

• Do not block the flow of combustion or ventilation air.

1. Keep heater clean. Clean heater annually or as needed to remove dust and debris. If heater is dirty or dusty, clean heater with a damp cloth. Use household cleaners on difficult spots.

2. Inspect heater before each use. Check connections for leaks. Apply mixture of liquid soap and water to connections. Bubbles forming show a leak. Correct all leaks at once.

3. Inspect hose/regulator assembly before each use. If hose is highly worn or cut, replace with hose specified by manufacturer.

4. Have heater inspected yearly by a qualified service agency.

5. Keep inside of heater free from combustible and foreign objects. Remove motor and other internal parts if needed to clean inside of heater (see Service Procedures, page 7).

6. Clean fan blades each season or as needed (see Fan, page 8).

TO STOP HEATER

1. Tightly close propane supply valve on propane tank(s).

2. Wait a few seconds. Heater will burn gas left in supply hoses.

3. Turn control knob to the OFF position.

4. Unplug heater.

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TROUBLESHOOTING

Note:

For additional help, visit DESA

Heating Products’ Technical Service web site at www.desatech.com.

OBSERVED FAULT

Fan does not turn when heater is plugged in.

Heater will not ignite

POSSIBLE CAUSE

1. No electrical power to heater

2. Fan hitting inside of heater shell

3. Fan blades bent

4. Defective motor

1. User did not follow installation or op-

2. No spark at ignitor. To test for spark,

WARNING: Never service heater while it is plugged in, connected to propane supply, operating, or hot. Severe burns and electrical shock can occur.

REMEDY

1. Check voltage to electrical outlet. If voltage is good, check heater power cord for breaks

2. Adjust motor/fan mount to keep fan from hitting inside of heater shell. Bend fan mount if necessary

3. Replace fan. See Fan, page 8

4. Replace motor. See Motor, page 7

1. Repeat installation and operation instructions. See

eration instructions properly

follow step 8 under Ignitor, page 8. If you see spark at ignitor, have heater serviced by qualified service person. If no spark seen: A) Loose or disconnected ignitor wire B) Wrong spark gap C) Bad ignitor electrode D) Bad spark transformer

Installation, page 4 and Operation, page 5

2. A) Check ignitor wire. Tighten or reattach loose ignitor wire. See Figure 10, page 8 for ignitor wire location B) Set gap between ignitor electrode and target plate to .13"/.15" ( C) Replace ignitor electrode. See Ignitor, page 8 D) Replace spark transformer. See Spark Trans- former, page 8

3.3 a 3.8 mm)

Heater shuts down while running.

1. Propane supply may be inadequate

2. High surrounding air temperature causing thermal limit device to shut down heater.

3. Restricted air flow

4. Damaged fan

5. Excessive dust or debris in surrounding area

WARNING: Use only in areas free of high dust content.

1. A) Refill tank B) Provide additional and/or larger tanks. See Propane Supply, page 4

2. This can happen when running heater in temperatures above 85°F. Run heater in cooler temperatures

3. Check heater inlet and outlet. Remove any obstructions

4. Replace fan. See Fan, page 8

5. Clean heater. See Maintenance, page 5

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SERVICE PROCEDURES

WARNING: Never service heater while it is plugged in, connected to propane supply, operating, or hot. Severe burns and electrical shock can occur.

MOTOR

1. With heater on its side, remove base tray.

2. Access ground screw through underside of heater base. Remove ground screw. Disconnect the green motor wire and the green power cord wire from underside of shell (see Figure 5).

3. Remove black and white motor wires from terminal board (see Figure 5).

4. Carefully push motor wires through hole in bottom of shell.

5. Remove screws holding motor mount to shell. Use nut-driver (see Figure 6).

6. Carefully pull motor and fan out of shell. careful not to damage fan. Do not set motor and fan down with the weight resting on fan. This could damage fan pitch.

7. Use hex wrench to loosen setscrew which holds fan to motor shaft.

8. Remove fan. Be careful not to damage the fan blade pitch.

9. Use nut driver to remove two nuts that attach motor to motor mount.

10. Discard old motor.

11. Attach motor to motor mount with two nuts. T ighten nuts ﬁrmly.

12. Replace fan on motor shaft. Make sure set screw contacts flat surface on motor shaft.

13. T ighten set screw ﬁrmly (40-50 inch-pounds [46.08-57.60 kilogram-centimeters]).

14. Carefully route motor wires through hole in shell (see Figure 7). Place motor, motor mount, and fan guard into rear of heater shell.

15. Insert screws through heater shell and into motor mount. Tighten screws ﬁrmly.

16. Turn heater on its side to access opening in bottom of base. Connect green wires from motor, transformer , and power cord to heater shell using ground nut (see Figure 5).

17. Attach black and white wires to terminal board (see Wiring Diagram, page 9, for correct locations) .

18. Replace base tray.

IMPORTANT:

Ground Screw

Motor Green Lead

Figure 5 - Location of Ground Screw

Motor Mount Screw

Hole in Shell for Wires

Figure 6 - Removing Motor, Motor Mount, and Fan Guard from Heater

Hole in Shell for Wires

Figure 7 - Replacing Motor, Motor Mount, and Fan Guard into Heater

Transformer Green Lead

Power Cord Green Lead

Terminal Board

Fan Guard

Motor Mount

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SERVICE PROCEDURES

Continued

FAN

1 Remove motor, motor mount, and fan (see Motor, steps 1

through 8, page 7).

2. Clean fan using soft cloth moistened with kerosene or solvent.

3. Dry fan thoroughly.

4. Replace fan on motor shaft. Make sure setscrew is touching back of flat surface on motor shaft (see Figure 8).

5. Place setscrew on flat of shaft. Tighten setscrew firmly (40-50 inch-pounds [46.08-57.60 kilogram-centimeters]).

6. Place motor, motor mount, and fan guard into rear of heater shell (see Motor, steps 14 through 18, page 7).

Fan

Setscrew

Motor Shaft

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

Figure 8 - Fan, Motor Shaft, and Setscrew Location

Fan

Hub

Motor Shaft

Setscrew

Figure 9 - Fan Cross Section

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.

Ignitor

Ignitor Mounting Screw

Rear Head

Figure 11 - Removing Ignitor Mounting Screw and Ignitor

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SERVICE PROCEDURES

SPECIFICATIONS

WIRING DIAGRAM

ACCESSORIES

SERVICE PROCEDURES

Continued

7. Check gap between ignitor electrode and nozzle to .13"/.15" (3.3/3.8 mm) (see Figure 12).

8. Test for spark.

WARNING: Make sure heater is disconnected from propane supply. Heater could ignite causing 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).

Burner Nozzle

Gap Area

Ignitor Electrode

WIRING DIAGRAM

100,000 Btu/Hr Model

White

Terminal Board

12 34 56

Relay

Blue

Black

White

Black

Blue

Power

Cord

Black

Green

White

Thermocouple

ACCESSORIES

Motor

Black

Ignition Control

Orange

Ignitor

Thermal Switch

Auto Control

Green Green

Green

Valve

Figure 12 - Clearance between Ignitor Electrode and Target Plate

SPECIFICATIONS

Output Rating (Btu/Hr) 65,000 85,000 100,000 Fuel Consumption

Gallons(Liters)/Hour 0.7 (2.65) .93 (3.52) 1.1 (4.16)

Pounds(Kilograms)/Hour 3.0 (1.36) 3.9 (1.77) 4.6 (2.09) Fuel Propane Vapor Only Supply Pressure To Regulator

Minimum (for purposes

of input adjustment) 10 psi (65.98 Kpa)

Maximum Tank Pressure Regulator Outlet Pressure (Factory Preset) Manifold Pressure 10" (4 cm) WC Hot Air Output (CFM Approx) 475" (144.78 cm) Motor 3,200 RPM, 1/10 HP Electric Input 120 V/60 Hz Amperage 2.9 Ignition Continuous Ignitor Gap (Inches) .13"/.15" (3.3/3.8 mm) Weight Heater 23 lbs (10.43 kg)

Shipping 29 lbs (13.15 kg)

Size - L x W x H

Carton 28.5" x 12.5" x 17" (72.39 x 31.75 x 43.18 cm)

Heater 26.25" x 9" x 15.5" (66.67 x 22.86 x 39.37 cm)

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 nearest Parts Central (listed in the separate Authorized Service Center booklet) or call DESA Heating Products at 1-866-672-6040 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

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ILLUSTRATED PARTS BREAKDOWN

Models RM100LP and RLP100

ILLUSTRATED PARTS BREAKDOWN

100,000 Btu/Hr Models RM100LP, RLP100

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111710-01A

+ 22 hidden pages

Desa Tech RLP100, RM100LP Owner's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual