Desa Tech BLP155A, RLP80, RLP155A Owner's Manual

PROPANE

CONSTRUCTION

HEATERS

OWNER’S MANUAL

Heater Sizes: 80,000 & 150,000 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.

80,000 AND 150,000 BTU/HR PROPANE CONSTRUCTION HEATER

SAFETY INFORMATION

WARNINGS

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•CGA2.14. 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 may 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 Petroleum Gas, ANSI/NFPA 58 and the Natural Gas Installation Code, CAN/CGA B149.2. This

instructs on the safe storage and handling of propane gases.

• Approved by the New York City Fire Department under Certificate of Approval #4953. To be used only at construction site with applicable New York City codes, regulations, rules, directives, permits, etc.

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

• This heater produces carbon monoxide, which is listed by the state of California as a reproductive toxin under Proposition 65.

• 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 Canadian Electric 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.

• Use only a three-prong, grounded extension cord.

• 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-squarefoot 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 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 v apors and liquids. Do not use heater in areas with high dust content.

• Minimum heater clearances from combustibles: Outlet: 8 Ft. Sides: 2 Ft.

Top: 6 Ft. Rear: 2 Ft.

• 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.

• 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 before using heater.

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

• Not intended for use on finished floors.

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

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

• Do not leave heater unattended.

• Keep children and animals away from heater.

• Never move, handle, or service a hot, operating, or plugged-in heater. Severe burns may result. Wait 20 minutes after turning heater off.

• T o prevent injury , wear glov es 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 and unplug 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.

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OWNER’S MANUAL

PRODUCT IDENTIFICATION

Hot Air Outlet (Front)

Lower Shell

Figure 1 - 80,000 Btu/Hr Model

Hot Air Outlet (Front)

Lower Shell

Upper Shell

On/Off Switch

Power Cord

Handle

Fan Guard

Inlet Connector

Hose /Regulator Assembly

Fan Guard

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.

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/or CAN/CGA B149.2. Your local library or fire department 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 tanks needed to run this heater. Do not operate this product with any tank smaller than 100 pounds.

Temperature Number

(°F) At Tank Of Tanks

80,000 150,000

Btu/Hr Btu/Hr

32° 12 20° 12 10° 23

0° 22

-10° 3 (Use larger

-20° 3 tank)

On/Off Switch

Hose /Regulator Assembly

Figure 2 - 150,000 Btu/Hr Model

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Inlet Connector

Less gas is vaporized at lower temperatures. You may need two or more 100 pound 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).

80,000 AND 150,000 BTU/HR PROPANE CONSTRUCTION HEATER

THEORY OF OPERATION

THE FUEL SYSTEM

The hose/regulator assembly attaches to the propane gas supply. The propane gas moves through the solenoid 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 direct spark ignitor (DSI) sends voltage to the spark plug/ignitor. The spark plug/ ignitor ignites the fuel and air mixture.

THE SAFETY CONTROL SYSTEM

This system causes the heater to shut down if the flame goes out.

INSTALLATION

WARNING: Review and un-

derstand the warnings in the

Safety Information

2. They are needed to safely operate this heater. Follow all local codes when using this heater.

WARNING: Test all gas piping and connections 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, page 3).

2. Connect POL fitting on hose/regulator assembly to propane tank(s). Turn POL fitting counterclockwise into threads on tank. Tighten firmly using wrench. Tighten regulator with vent pointing over the hose (see Figure 4).

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3. Connect hose to inlet connector (see Figure 5). Tighten 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 v alve on propane tank may stop gas flow. If this happens, close propane supply valve and open again slowly.

5. Check all connections for leaks.

WARNING: 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.

6. Close propane supply valve.

Hose

Supply Valve

Regulator

Combustion Chamber

Clean Heated Air Out (Front)

Spark Plug/Ignitor

Air For Combustion And Heating

Figure 3 - Cross Section Operational View (80,000 Btu/Hr Model Shown)

Note:

Some parts are located differently on some models.

Nozzle

DSI

Solenoid Valve

Fan

Motor

Fuel

On/Off Switch

Hose/Regulator Assembly

Cool Air In (Back)

Power Cord

Propane Tank

Figure 4 - Regulator With Vent Pointing Over Hose

80,000 Btu/Hr Model Shown

Figure 5 - Hose and Inlet Connector

Vent (pointing over hose)

POL Fitting

Inlet Connector

Hose

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OWNER’S MANUAL

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.

OPERATION

WARNING: Review and understand the warnings in the

Safety Information

2. They are 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 drafts do not blow into front or rear of heater.

3. Plug power cord of heater into a threeprong, grounded extension cord. Extension cord must be at least six feet long. Extension cord must be UL listed.

Extension Cord Size Requirement

Up to 50 feet long, use 18 AWG rated cord.

51 to 100 feet long, use 16 AWG rated cord.

101 to 200 feet long, use 14 AWG rated cord.

4. Plug extension cord into a 120 volt/60 hertz, three-hole, grounded outlet.

5. Open propane supply valve on propane tank(s) slowly. slowly , excess-flo w check valve on propane tank may stop gas flow. If this happens, close propane supply valve and open again slowly.

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Note:

If not opened

6. Turn on/off switch to the ON position. Heater will start within twenty seconds.

Note:

If heater does not start, turn on/ off switch to the OFF position. W ait ten seconds for safety control to reset, then try again.

TO STOP HEATER

1. Tightly close propane supply valve on propane tank(s). Allow heater to burn remaining fuel in hose.

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

3. Turn on/off switch to the OFF position.

4. Unplug heater.

STORAGE

CAUTION: Disconnect heater

from propane supply tank(s).

1. Store propane tank(s) in safe manner. See Chapter 5 of Standard for Stora ge

and Handling of Liquefied Petroleum Gases, ANSI/NFPA 58 and/or CAN/ CGA B149.2. Follow all local codes.

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. K eep inside of heater free from combustible and foreign objects.

PREVENTATIVE MAINTENANCE SCHEDULE

Item

Fan

Air Sensing Switch (80,000 Btu/Hr Model Only)

Spark Plug (80,000 Btu/Hr Model Only)

How Often

Clean every 500 hours of operation or as needed

Clean and regap every 500 hours of operation or replace as needed

MAINTENANCE

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

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.

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.

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

5. Keep inside of heater free from combustible and foreign objects.

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

How To

See Fan, page 6

See Air Sensing Switch, page 6

See Spark Plug, page 7

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