Desa ROPANE CONSTRUCTION HEATERS User manual

GENERAL HAZARD WARNING:

FAILURE TO COMPLY WITH THE PRECAUTIONS AND INSTRUC-

TIONS 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 IN-

STRUCTIONS SHOULD USE OR SERVICE THIS HEATER.

IFYOUNEEDASSISTANCEORHEATERINFORMATIONSUCHASAN

INSTRUCTIONSMANUAL,LABELS,ETC.CONTACTTHEMANUFAC-

TURER.

Heater Sizes: 80,000 150,000 BTU/Hr

PROPANE

CONSTRUCTION

HEATERS

OWNER’SMANUAL

150 LP SIDE PV 017

45 & 80 LP SIDE PV 0016

IMPORTANT

Read and understand this manual before assembling, starting, or servicing heater. Im-

proper use of heater can cause serious injury. Keep this manual for future reference.

099162

Safety Information......................................................................... 2

Product Identification .................................................................... 4

Unpacking......................................................................................5

Theory of Operation ......................................................................5

Propane Supply..............................................................................6

Installation .....................................................................................6

Ventilation .....................................................................................7

Operation .......................................................................................8

Storage ........................................................................................... 8

Maintenance ..................................................................................9

Preventative Maintenance Schedule..............................................9

Service Procedures ........................................................................10

Specifications ................................................................................ 12

Wiring Diagrams ...........................................................................13

Accessories ....................................................................................15

Technical Service .......................................................................... 15

Service Publications ......................................................................15

Replacement Parts .........................................................................15

Warranty and Repair Service.........................................................Back Cover

SECTION PAGE

CONTENTS

Safety Information continues on next page

The heater is designed and approved for use as a construction heater under ANSI

Z83.7.Theprimarypurpose ofconstructionheatersistoprovide temporaryheating

of buildings under construction, alteration or repair, and to provide temporary

emergency heat. 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.

Otherstandardsgoverntheuseoffuelgasesandheatproducingproductsforspecific

uses. Your local authorities can advise you about these.

Carbon Monoxide Poisoning: Some people are more affected by carbon

monoxidethanothers. Earlysigns ofcarbon monoxide poisoningresemble theﬂu,

with headaches, dizziness, and/or nausea. If you have these signs, the heater may

not be working properly. Get fresh air at once! Have heater serviced.

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 IN-

STRUCTIONS. NEVER USE THE HEATER IN SPACES WHICH

DO OR MAY CONTAIN VOLATILE OR AIRBORNE COMBUS-

TIBLES, OR PRODUCTS SUCH AS GASOLINE, SOLVENTS,

PAINT THINNER, DUST PARTICLES OR UNKNOWN CHEMI-

CALS.

WARNING

NOT FOR HOME OR RECREATIONAL VEHICLE USE.

WARNINGS

SAFETY

INFORMATION

099162

SAFETY

INFORMATION

Continued

WARNINGS

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

propanegas.Theodorhelpsyoudetectapropanegasleak.However,theodoradded

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.

• For indoor use only. Provide adequate ventilation.

• Use only in well vented areas. Before using heater, provide at least a three-

square-foot opening of fresh, outside air for each 100,000 BTU/Hr of rating.

This heater produces carbon monoxide, which is listed by the State of Califor-

nia as a reproductive toxin under Proposition 65.

• Do not use heater outdoors or in occupied dwellings.

• Do not use heater in living or sleeping quarters.

• 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.

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

• Install and use heater with care. Follow all local ordinances and codes. In the

absence of local ordinances and codes, refer to ANSI/NFPA 58. This instructs

on the safe storage and handling of propane gases.

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

• Use only propane gas set up for vapor withdrawal.

• Keep propane tank(s) below 100°F.

• 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.

• Use only the electrical voltage and frequency speciﬁed on model plate.

• The electrical connections and grounding of the heater shall follow the Na-

tional Electric Code, ANSI/NFPA 70.

• 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.

• Inspect hose before each use of heater. If highly worn or cut, replace before

using heater. Use the replacement hose assembly speciﬁed in this manual.

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

propane tank(s) within 20 feet.

• Minimum heater clearances from combustibles:

Outlet: 8 Ft. Sides: 2 Ft. Top: 6 Ft. Rear: 2 Ft.

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

• Keep children and animals away from heater.

• Turn off propane supply and unplug heater when not in use.

• When used with thermostat, heater may start anytime.

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

• Never move, handle, or service a hot, operating, or plugged-in heater.

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

• Do not use heater if altered.

• Never attach duct work to front or rear of heater.

• 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.

099162

PRODUCT

IDENTIFICATION

Generic LP 155 LP-PFA/PV 008B

Hot Air

Outlet

(Front)

Handle

Fan Guard

Upper Shell

On/Off Switch

Power Cord

Hose /Regulator

Assembly

Inlet

Connector

Figure 2 - 150,000 BTU/Hr Model

Generic LP 45 & 80 LP-PFA/PV 008A

Fan Guard

Handle

Lower Shell

Power Cord

Hose /Regulator

Assembly

Inlet

Connector

On/Off Switch

Hot Air Outlet

(Front) Upper Shell

Figure 1 - 80,000 BTU/Hr Model

Lower Shell

099162

45/80 LP SIDE LP-PFA/OV 001A

Air For Combustion

And Heating Fuel

Combustion

Chamber

DSI

Nozzle

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

Clean

Heated

Air Out

(Front) Cool Air In

(Back)

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.

Fan

Motor

Power

Cord

Hose/Regulator

Assembly

On/Off Switch

Solenoid

Valve

Note:

Some parts are located differently on some models.

Spark Plug/Ignitor

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.

099162

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. 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.

32°20°10°0°-10°-20°

Number of tanks, 80,000 BTU/Hr 1 1 2 2 3 3

Number of tanks, 150,000 BTU/Hr 2 2 3 3 (Use larger tank)

Temperature (°F) At Tank

Continued

Hose

Regulator

Vent

(pointing down)

POL Fitting

Supply

Valve

Propane

Tank

Figure 4 - Regulator With Vent Pointing Down

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).

INSTALLATION

WARNING

Review and understand the warnings in the Safety Information

Section, pages 2 and 3. They are needed to safely operate this

heater. Follow all local codes when using this heater.

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

2. Connect POL fitting on hose/regulator assembly to propane tank(s). Turn POL

fitting counterclockwise into threads on tank. Tighten firmly using

7/8" wrench.

IMPORTANT:

Tighten regulator with vent pointing down.

Pointing vent down protects regulator from weather damage.

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.

099162

Generic LP 45 & 80 LP-PFA/P 023

3. Connect hose to inlet connector. 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 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.

Figure 5 - Hose and Inlet Connector

Hose

Inlet Connector

80,000 BTU/Hr

Model Shown

6. Close propane supply valve.

WARNING

Follow the minimum fresh, outside air ventilation require-

ments. If proper fresh, outside air ventilation is not provided,

carbon monoxide poisoning can occur. Provide proper fresh,

outside air ventilation before running heater.

VENTILATION

Example:

A 150,000 BTU/Hr heater requires one of the following:

• a two-car garage door raised six inches

• a single-car garage door raised nine inches

• two thirty-inch windows raised twelve inches

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.

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.

099162

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 three-prong, grounded extension cord.

Extension cord must be at least six feet long. Extension cord must be UL

listed.

OPERATION

WARNING

Review and understand the warnings in the Safety Information

Section, pages 2 and 3. They are needed to safely operate this

heater. Follow all local codes when using this heater.

STORAGE

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

and Handling of Liquefied Petroleum Gases, ANSI/NFPA 58. 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. Keep inside of heater free

from combustible and foreign objects.

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.

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.

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. Wait ten

seconds for safety control to reset, then try again.

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 on/off switch to the OFF position.

4. Unplug heater.

CAUTION

Disconnect heater from propane supply tank(s).

099162

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.

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 every 500 hours of

operation or as needed.

Clean and regap every 500

hours of operation or replace

as needed.

How To

See Fan, page 10.

See Air Sensing

Switch, page 11.

See Spark Plug,

page 11.

WARNING

Never service heater while it is plugged in, connected to

propane supply, operating, or hot. Severe burns and

electrical shock can occur.

099162

LP-PFA/P 019B45/80 Models

FAN CROSS SECTION LP-PFA/P 013

FAN LP-PFA/P 023

SERVICE

PROCEDURES

Upper Shell Removal

1. Remove screws along each

side of heater using 5/16"

nut-driver. These screws

attach upper and lower

shells together.

2. Lift or slide upper shell off.

3. Remove fan guard.

Fan Motor

Figure 7 - Upper Shell Removal,

150,000 BTU/Hr Model

Figure 6 -

Upper Shell Removal,

80,000 BTU/Hr Model

Figure 10 - Fan Cross Section

Figure 9 - Fan, Motor Shaft,

and Setscrew Location

80,000 BTU/Hr

Model Shown

Motor shaft

Fan

Setscrew Fan

Figure 8 - Fan Removal and Air Sensing

Switch Location

Air Sensing

Switch

Paddle

(80,000

BTU/Hr

Model

Only)

Paddle

Arm

Hub

Setscrew

Motor

Shaft

WARNING

Never service heater while it is plugged in, connected to

propane supply, operating, or hot. Severe burns and

electrical shock can occur.

Fan

IMPORTANT:

Remove fan

from motor shaft before

removing motor from heater.

The weight of the motor

resting on the fan could

damage the fan pitch.

1. Remove upper shell (see

above).

2. Use 1/8" hex wrench to

loosen setscrew which

holds fan to motor shaft.

3. Slip fan off motor shaft.

Be careful not to strike air

sensing switch paddle or

paddle arm (80,000 BTU/

Hr model only).

4. Clean fan using soft cloth

moistened with kerosene or

solvent.

5. Dry fan thoroughly.

6. Replace fan on motor shaft.

Make sure setscrew is

touching back of flat

surface on motor shaft (see

Figure 10).

7. Place setscrew on flat of

shaft. Tighten setscrew

firmly (40-50 inch-

pounds).

8. Replace fan guard and

upper shell.

This manual suits for next models

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