Desa TC275 User manual

PROPANE
CONSTRUCTION
HEATER
OWNER’S MANUAL
IMPORTANT
Read and understand this manual before assembling, starting, or servicing heater.
Improperuseofheatercancauseseriousinjury.Keepthismanualforfuturereference.
!
GENERAL HAZARD WARNING:
FAILURE TO COMPLY WITH THE PRECAUTIONS AND INSTRUCTIONS PRO-
VIDED WITH THIS HEATER, CAN RESULT IN DEATH, SERIOUS BODILY INJURY
AND PROPERTY LOSS OR DAMAGE FROM HAZARDS OF FIRE, EXPLOSION,
BURN, ASPHYXIATION, AND/OR CARBON MONOXIDE POISONING.
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 INSTRUC-
TIONS MANUAL, LABELS, ETC. CONTACT THE MANUFACTURER.
Models: TC275 and RCP275

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SECTION PAGE
CONTENTS
Safety Information......................................................................... 2
Product Identification .................................................................... 4
Unpacking......................................................................................4
Theory of Operation ...................................................................... 4
Propane Supply..............................................................................5
Ventilation ..................................................................................... 5
Specifications ................................................................................ 5
Installation ..................................................................................... 6
Operation .......................................................................................7
Storage ........................................................................................... 8
Maintenance .................................................................................. 8
Troubleshooting.............................................................................9
Accessories .................................................................................... 10
Service Publication ........................................................................ 10
Replacement Parts ......................................................................... 10
Warranty and Repair Service.........................................................Back Cover
Safety Information continues on next page
SAFETY
INFORMATION
!
WARNING: FIRE, BURN, INHALATION, AND EXPLOSION
HAZARD.KEEPSOLIDCOMBUSTIBLES,SUCHASBUILDING
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,ORPRODUCTSSUCHASGASOLINE,SOL-
VENTS, PAINT THINNER, DUST PARTICLES OR UNKNOWN
CHEMICALS.
!
WARNING ICON G 001
WARNING
NOT FOR HOME OR RECREATIONAL VEHICLE USE.
The heater is designed for use as a construction heater. The primary purpose of
construction heaters is to provide temporary heating of buildings under construc-
tion,alteration orrepair,andtoprovidetemporaryemergencyheat. Properlyused,
the heater provides safe economical heating. Products of combustion are vented
into the area being heated.
Wecannotforeseeeveryusewhich may be madeofourheaters.Checkwithyour
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
monoxidethanothers.Earlysignsofcarbonmonoxidepoisoningresembletheflu,
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.
!
WARNINGS

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SAFETY
INFORMATION
Continued
!
WARNINGS Continued
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.
• For indoor use only. Provide adequate ventilation.
• 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.
• 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 in well-vented areas. Before using heater, provide at least three
square feet of fresh, outside air opening for each 100,000 BTU/Hr of rating.
This heater produces carbon monoxide, which is listed by the State of
California as a reproductive toxin under Proposition 65.
• Check heater for damage before each use. Do not use a damaged heater.
• Keep heater away from strong drafts, water spray, rain, or dripping water.
• Never attach duct work to heater.
• Neverblockairinlet(bottomofshell)orairoutlet(aroundtopofshell)ofheater.
• Keep children and animals away from heater.
• Locate heater on stable and level surface if heater is hot or operating.
• Minimum heater clearances from combustibles: Sides: 4 feet,
Top: 6 feet-2 inches.
• 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 in-
structs on the safe storage and handling of propane gases.
• 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 that is specified by the
manufacturer.
• Use only propane gas set up for vapor withdrawal.
• Keep propane tank(s) below 100°F.
• Keep heater at least six feet from propane tank(s).
• Never move, handle, or service a hot or operating heater. Severe burns may
result. You must wait 30 minutes after turning heater off.
• To prevent injury, wear gloves when handling heater.
• Turn off propane supply to heater when not in use.
• Do not alter heater. Keep heater in its original state.
• Do not use heater if altered.
• 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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LP-PFA/PV 013ALP 275
Main Burner
Valve Handle
Main Burner
Valve
PRODUCT
IDENTIFICATION
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.
UNPACKING
Figure 1 - Product Identification
Shell
Top
Thermocouple
Pilot
Automatic
Control Valve
Inlet
Connector
Base
Hose/Regulator
Assembly
Note: Debris Shield Not
Shown
THEORY OF
OPERATION
The Fuel System: The hose/regulator assembly attaches to the propane gas
supply. This provides fuel to the heater.
The Ignition System: The piezo ignitor lights the pilot fuel supply. The pilot
fuel supply is lit manually on all other models.
The Automatic Control System: The automatic control valve shuts off the
heater if the flame goes out.
Automatic
Control Valve
Button
Piezo Ignitor
Button
Ignitor
Electrode

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PROPANE
SUPPLY
You must provide propane gas and propane tank(s).
Use this heater only with a propane vapor withdrawal supply system. See
Chapter 5 of the Standard for Storage and Handling of Liquified 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 liquid propane gas in tank(s)
2. The temperature of tank(s)
The chart below shows the minimum number of 100-pound tanks needed to run
the heater. Connect tanks together with a manifold. Do not operate this product
with any tank smaller than 100 pounds.
Less gas is vaporized at lower temperatures. Two or more 100-pound tanks or one
larger tank may be needed in colder weather. Your local propane gas dealer will
help you select the proper supply system.
Average Temperature (°F)
At Tank Location 60°40°32°20°10°0°
Number Of Tanks 223333
SPECIFICATIONS Rating(BTU/Hr)
Fuel
Fuel Consumption
Gallons/Hour
Pounds/Hour
Supply Pressure (To Regulator)
Maximum
Minimum, for input adjustment
Regulator Outlet Pressure
Weight (Pounds)
Shipping Weight (Pounds)
Size - L x W x H (Inches)
TC275
230,000
Propane Vapor Only
2.5
10.7
Tank Pressure
40 psi
10 psi
15
19
181/2x 16 x 231/8
RCP275
275,000
Propane Vapor Only
3
12.75
Tank Pressure
40 psi
14 psi
15
19
181/2x 16 x 231/8
VENTILATION
FRESH OUTSIDE AIR OPENING REQUIREMENTS
HEATER SIZE SQUARE FEET OPENING
275,000 BTU/Hr
230,000 BTU/Hr 8.2
6.9
!
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.

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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.
INSTALLATION
Continued
Figure 3 - Hose and Inlet Connector
LP-PFA/OV 008Hose and Inlet Connector-LP200 & 275
Figure 2 - Regulator With Vent Pointing Down
Propane
Tank
1. Provide propane supply system (see Propane Supply, page 5).
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.
Supply Valve POL Fitting
Hose
Regulator
Vent
(pointing down)
3. Connect hose to the inlet connector. Tighten firmly using 9/16" wrench.
IMPORTANT: Use extra hose or piping if needed. Install extra hose or
piping between hose/regulator assembly and propane tank. You must use the
regulator supplied with heater even if propane tank has one.
Hose
Inlet Connector
!
WARNING
Review and understand the warnings in the Safety Informa-
tion Section. 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 installation
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.

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6. Close propane supply valve.
Figure 4 - Main Burner Valve Handle, Automatic Control Valve Button, and
Piezo Ignitor Button Locations
LP-PFA/OV 006Gas Controls-TrashCan
Piezo Ignitor
Button
Main Burner
Valve Handle
Continued
5. Check all connections for leaks. Apply mixture of liquid soap and water to gas
joints. Bubbles forming show a leak that must be corrected.
OPERATION
Automatic
Control Valve
Button
!
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 that must be corrected. Correct all leaks at once.
!
WARNING
Review and understand the warnings in the Safety Informa-
tion Section. 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
on heater.
!
WARNING
Fully close main burner valve before lighting pilot. If not,
severe burns can occur. Do this by turning valve handle
towards the OFF position until it stops.
3. 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.
4. Push in and hold automatic control valve button (see Figure 4). Push piezo
ignitor button (see Figure 4). You may need to push the piezo ignitor button 3-
8 times until the pilot lights. Note: Hose may be filled with air. If so, keep
automatic control valve button pressed and wait 20 seconds before pressing
ignitor button again. When pilot lights, keep automatic control valve button
pushed in. Release button after 30 seconds.

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5. If pilot light goes out, repeat step 4.
6. When pilot remains lit, fully open main burner valve. Do this by turning main
burner valve handle towards the ON position until it stops. Note: Arrows on
main burner valve handle show directions for ON and OFF.
To Stop Heater
1. Tightly close propane supply valve on propane tank(s).
2. Shut off main burner valve. Do this by turning main burner valve handle
towards the OFF position until it stops.
Note: Arrows on main burner valve
handle show direction for ON and OFF.
To Restart Heater
1. Wait five minutes after stopping heater.
2. Restart heater by following steps under “To Start Heater.”
STORAGE
!
CAUTION
Disconnect heater from propane supply tank(s).
!
CAUTION
Do not stack heaters over three high if more than one
heater is being stored. Secure heaters with rope or strap
after stacking.
1. Store propane tank(s) in safe manner. Refer to Chapter 5 of Standard for
Storage and Handling of Liquified Petroleum Gases, ANSI/NFPA 58. 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 a dry, clean, and safe place.
MAINTENANCE
!
WARNING
Never attempt to service heater while it is connected to
propane supply, operating, or hot. Severe burns can occur.
1. Keep heater clean.
2. Inspect heater before each use. Check connections for leaks. Apply mixture of
liquid soap and water to connections. Bubbles forming show a leak that must be
corrected. 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 service person.

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SYMPTOM
Pilot fails
to light.
Pilot lights
but goes
out when
automatic
control valve
button
is released.
Burn rate
is low.
POSSIBLE CAUSE
1. Propane supply valve closed
on propane tank(s).
2. Excess-flow check valve
closed.
3. Air in gas line.
4. Blockage in pilot orifice.
5. Piezo ignition system not
sparking.
1. Not enough warm-up time.
2. Low gas pressure.
3. Thermocouple loose or
needs to be replaced.
4. Automatic control valve
needs to be replaced.
1. Main burner valve not fully
open.
2. Plugged gas orifices.
3. Low gas pressure.
4. Low fuel supply.
REMEDY
1. Open propane supply valve
slowly.
2. Close propane supply valve on
propane tank and reopen
slowly.
3. Allow several minutes to purge
air with automatic control
valve button depressed.
4. Replace pilot orifice.
5. Adjust ignitor electrode gap to
.120". Check wire lead for
damage. Replace piezo ignitor
and/or ignitor electrode as
necessary.
1. Relight, hold automatic control
valve button in 45 seconds.
2. Check propane tank(s) for
proper gas supply.
3. Tighten connection or replace
thermocouple.
4. Replace automatic control
valve.
1. Fully open main burner valve
by turning the valve handle
towards ON position until it
stops.
2. Replace gas orifice.
3. Check gas supply; check
regulator output.
4. Consult propane gas supplier.
TROUBLE-
SHOOTING
You may have further ques-
tions about this heater. If so,
contact DESA International’s
Technical Service Department
at 1-800-323-5190.
!
WARNING
Never attempt to service heater while it is connected to
propane supply, operating, or hot. Severe burns can occur.

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ACCESSORIES
Purchase these accessories
and parts from your local
dealer or service center. If
your dealer or service center
can not supply an accessory or
part, contact your nearest
Parts Central (listed in the
separate Authorized Service
Center booklet) or call DESA
International’s Parts Depart-
ment at 1-800-972-7879. You
can also write to the address
listed on the back page of this
manual.
Part Number Description
LPA1020 10' Rubber Hose with Brass Fitting
U.L. listed.
LPA1030 15' Rubber Hose with Brass Fitting
U.L. listed.
LPA2010 Propane Gas Regulator
U.L. listed.
LPA3000 Hose/Regulator Assembly
U.L. listed.
LPA4000 Piezo Ignitor Kit
For matchless ignition.
LPA4010 Debris Shield
Protects valve controls from paint, plaster, and
other drying liquids.
LPA4020 Fuel Gas Connector
Connects regulator to all standard propane tanks.
U.L. and A.G.A. listed.
LPA2060 Adjusting Regulator and Gauge Assembly
Allows for reduced input operation where less
heat is needed.
You can obtain an Illustrated Parts List free of charge. Send your request along
with a self-addressed, stamped envelope to the address listed on the back page of
this manual. Be sure to include the model number of the heater.
SERVICE
PUBLICATION
Parts Under Warranty
Contact authorized dealers of this product. If they can’t supply original replacement
part(s), either contact your nearest Parts Central or call DESA International’s
Technical Service Department at 1-800-323-5190.
When calling DESA International, have ready
• your name • how heater was malfunctioning
• your address • purchase date
• model number of your heater
In most cases, we will ask you to return the defective part to the factory.
Parts Not Under Warranty
Contact authorized dealers of this product. If they can’t supply original replacement
part(s), either contact your nearest Parts Central or call DESA International’s Parts
Department at 1-800-972-7879.
When calling DESA International, have ready
• model number of your heater
• the replacement part number
REPLACEMENT
PARTS
!
WARNING
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. This will
also protect your warranty coverage for parts replaced under
warranty.