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For more information, visit www.desatech.com

For more information, visit www.desatech.com

SAFETY INFORMATION

 WARNINGS

 WARNING: FIRE, BURN, INHALATION, AND EX-

PLOSION HAZARD. KEEP SOLID COMBUSTIBLES,
SUCH AS BUILDING MATERIALS, PAPER OR CARD-
BOARD, A SAFE DISTANCE AWAY FROM THE
HEATER AS RECOMMENDED BY THE INSTRUC-
TIONS. NEVER USE THE HEATER IN SPACES WHICH
DO OR MAY CONTAIN VOLATILE OR AIRBORNE
COMBUSTIBLES, OR PRODUCTS SUCH AS GASO-
LINE, 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 nau-
sea. 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.

• 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.

SAFETY INFORMATION

• 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 Gas 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.

• 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 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 a 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, gaso-

line, paint thinner, and other flammable vapors and liquids. Dust is
combustible. Do not use heater in areas with high dust content.

• 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.

• Keep children and animals away from heater.

• This heater is equipped with a thermostat. Heater may start at anytime.

• 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 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 re-
placement parts could cause serious or fatal injuries.

Summary of Contents for LP155AT

Page 1: ... CAN RESULT IN DEATH SERIOUS BODILY INJURY AND PROPERTY LOSS OR DAMAGE FROM HAZARDS OF FIRE EXPLOSION BURN ASPHYXIATION CARBON MONOX IDE 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 SAFET...

Page 2: ...inances and codes refer to the Standard for Storage and Handling of Liquefied Petroleum Gas ANSI NFPA 58 and the Propane Gas 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 7...

Page 3: ...uel 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 andaroundthecombustionchamber Thisairisheatedandprovides 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 ...

Page 4: ...rming show a leak Correct all leaks at once 1 Provide propane supply system see Propane Supply column 1 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 down Less gas is vaporized at lower temperatures You may need two or more 100 pound tanks or one larger tank ...

Page 5: ...eater does not start turn on off switch to the OFF po sition Wait ten seconds for safety control to reset then try again Note If heater still does not start after turning thermostat knob to a higher position the high temperature switch may have opened during thermostat shut down Allow high temperature switch to reset This usually takes 10 15 minutes Try starting heater again after switch resets TO...

Page 6: ... 8 hex wrench to loosen setscrew which holds fan to motor shaft 3 Slip fan off motor shaft 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 8 7 Place setscrew on flat of shaft Tighten setscrew firmly 40 50 inch pounds 8 Replace fan guard andupper shell IGNI...

Page 7: ...upted Type Spark Plug Gap Inches N A Ignitor Gap Inches 13 15 Weight Pounds Heater 24 Shipping 35 Size L x W x H Inches 36 1 4 x 14 1 2 x 20 WIRING DIAGRAMS Electrical Connection Diagram Orange Green Automatic Ignition System G V VR ACR AC Position of Leads May Vary Blue Blue White White Black Blue Insulated Connector Solenoid Valve Black Motor Power Cord 120 VAC On Off Switch Black High Temp Swit...

Page 8: ...w desatech com ILLUSTRATED PARTS BREAKDOWN LP155AT MODELS 33 2 1 31 12 26 43 9 32 10 11 38 20 21 6 7 6 5 3 37 34 Note Screws are standard hardware items 28 7 15 17 27 8 14 36 29 39 4 8 13 25 23 16 42 30 20 35 22 24 18 19 41 44 45 46 40 20 47 ILLUSTRATED PARTS BREAKDOWN LP155AT Models ...

Page 9: ...04 05 Shorty Bushing 1 22 M50104 01 Shorty Bushing 1 23 101732 01 Thermal Limit Switch 1 24 097968 05 Screw 4 40 x 1 2 2 25 097384 04 Hex Nut 4 40 Captive Washer 2 26 098511 129 Lower Shell Replacement Part Will Be Black 1 27 098447 03 Side Cover 1 28 098226 01 On Off Switch 1 29 097657 03 Built in Thermostat 1 30 104905 01 Thermostat Knob 1 31 M51104 01 Handle 1 32 M11084 29 Screw 10 16 x 3 4 2 3...

Page 10: ... parts replaced under warranty PARTS UNDER WARRANTY Contact authorized dealers of this product If they can t supply original replacement part s either contact your nearest Parts Cen tral or call DESA International s Technical Service Department at 1 800 323 5190 When calling DESA International have ready your name your address model and serial numbers of your heater how heater was malfunctioning p...

Page 11: ..._______________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ ________________________________________________________...

Page 12: ...ity for indirect incidental or consequential damages Some states do not allow the exclusion or limitation of incidental or consequential damages or limitations or exclusions may not apply to you This Limited Warranty gives you specific legal rights and you may also have other rights which vary from state to state KEEP THIS WARRANTY WARRANTY AND REPAIR SERVICE For information write DESA Internation...

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