Desa Btu/Hr 100.000 user manual

PROPANE

CONSTRUCTION

HEATERS

OWNER’S MANUAL

Heater Size: 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.

100,000 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/ 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 Petroleum Gas, ANSI/NFPA 58 and the Propane Installation Code, CAN/CGA B149.2.

This instructs on the safe storage and handling of propane 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.

• 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 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 threesquare-foot 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. 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 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.

• Never move, handle, or service a hot or operating heater. Severe burns may result. You must wait 15 minutes after turning heater off.

• 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.

102370-01H

OWNER’S MANUAL

PRODUCT IDENTIFICATION UNPACKING

Hot Air Outlet (Front)

Control Knob

Inlet Connector

Handle

Fan Guard

Motor Mount

Power Cord

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.

Figure 1 - 100,000 Btu/Hr Model

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 trans- former 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.

Hose /Regulator Assembly

Combustion Chamber

Clean Heated Air Out (Front)

Air For Combustion And Heating

Figure 2 - Cross Section Operational View

Nozzle

Fan

Fuel

Cool Air In (Back)

Power Cord

Hose/Regulator Assembly

102370-01H

100,000 Btu/Hr PROPANE CONSTRUCTION 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 the Propane Installation Code CAN/ CGA B149.2. Your local library or fire de-

partment 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.

Temperature(°F) Number of tanks, at Tank 100,000 Btu/Hr

32° 2 20° 2 10° 3 0° 3

-10° (Use larger tank)

-20° (Use larger tank)

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 above).

2. Connect fuel gas connector fitting on hose/regulator assembly to propane tank(s). Turn counterclockwise into threads on tank valve. Tighten firmly using wrench. regulator with vent pointing down. Pointing vent down protects regulator from weather damage.

section, page

IMPORTANT:

Tighten

3. Connect hose to inlet connector. Tighten firmly using a wrench.

IMPORTANT:

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. 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.

100,000 Btu/Hr Model Shown

Inlet Connector

Extra hose or piping

Note:

If not opened

Hose

Figure 4 - Hose and 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).

Supply Valve

Propane Tank

Figure 3 - Regulator With Vent Pointing Down

Hose

Regulator Vent

(pointing down)

Fuel Gas Connector

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.

102370-01H

OPERATION

WARNING: Review and understand the warnings in the

Information

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

section, page 2. They

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

4. Plug power cord of heater into a three-prong, grounded extension cord. Extension cord must be at least six feet long, UL/CSA listed, and of a proper size.

Extension Cord Size Requirement

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

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

5. Plug extension cord into a 120 volt/60 hertz, 3-hole, grounded outlet. Motor will start. Fan will turn, forcing air out front of heater.

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

7. Press and hold in control knob. Turn counterclockwise to the LOW position. Heater should ignite within a few seconds.

Note:

Safety

If not opened

OWNER’S MANUAL

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 heater. Repeat step 7.

8. After heater ignites, wait 30 seconds. This activates the automatic control system. Release the control knob.

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

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.

STORAGE

CAUTION: Disconnect heater

from propane supply tank(s).

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

and Handling of Liqueﬁed Petroleum Gases, ANSI/NFP A 58 and the Pr opane 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.

unburned fuel to exit

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 7).

102370-01H

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