Desa RCP80 User manual

PROPANE
CONSTRUCTION
HEATER
OWNER’S MANUAL
IMPORTANT
Readandunderstandthismanualbeforeassembling,starting,orservicingheater.
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 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: TC80 and RCP80

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SECTION PAGE
CONTENTS Safety Information......................................................................... 2
Product Identification .................................................................... 4
Specifications ................................................................................ 4
Unpacking......................................................................................5
Theory of Operation ...................................................................... 5
Propane Supply..............................................................................5
Ventilation ..................................................................................... 5
Installation ..................................................................................... 6
Operation .......................................................................................7
Storage ........................................................................................... 9
Maintenance .................................................................................. 10
Troubleshooting.............................................................................10
Accessories .................................................................................... 11
Replacement Parts ......................................................................... 11
Illustrated Parts List....................................................................... 12-13
Warranty and Repair Service.........................................................Back Cover
SAFETY
INFORMATION
Safety Information continues on next page
The heater is designed for use as a construction heater in accordance with ANSI
Z83.7•CGA2.14.Otherstandardsgoverntheuseoffuelgasesandheatingproducts
for specific uses. Your local authority can advise you about these. The primary
purposeofconstructionheatersis to providetemporaryheatingofbuildings under
construction,alterationorrepair.Properlyused,theheaterprovidessafeeconomi-
cal heating. Products of combustion are vented into the area being heated.
Wecannotforeseeevery usewhichmaybe 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! Check for proper ventilation and
have heater serviced.
WARNING ICON G 001
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 G001
WARNING
NOT FOR HOME OR RECREATIONAL VEHICLE USE.
WARNING ICON G 001
WARNINGS

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SAFETY
INFORMATION
Continued
!
WARNINGS
PropaneGas:Propanegasisodorless.Anodor-makingagentisaddedtopropane
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.
Makecertainyoureadandunderstandallwarnings.Keepthismanualforreference.
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.
• 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 2.5-square-
foot opening of fresh, outside air. This heater produces carbon monoxide, which
is listed by the State of California as a reproductive toxin under Proposition 65.
• 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 vapors and liquids. Do not use heater in areas
with high dust content.
• Minimum heater clearances from combustibles:
Sides: 4 Ft. Top: 6 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 (bottom) or air outlet (top) 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.
• 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 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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PRODUCT
IDENTIFICATION
SPECIFICATIONS
Rating (BTU/Hr)
High ................................................................................ 73,000
Low ................................................................................. 30,000
Fuel ...................................................................................... Propane Vapor Only
Fuel Consumption
Gallons/Hour .................................................................. 1.1
Pounds/Hour ................................................................... 3.7
Supply Pressure (To Regulator)
Maximum........................................................................ 200 psi
Minimum, for input adjustment...................................... 10 psi
Manifold Pressure (inches of water column)
High ................................................................................ 14
Low ................................................................................. 15.2
Ignitor Gap........................................................................... 0.120"
Weight (Pounds) .................................................................. 15
Shipping Weight (Pounds) .................................................. 19
Size - L x W x H (Inches).................................................... 18 1/2 x 16 x 23 1/8
Figure 1 - Product Identification
HIGH
LOW
OFF
INDICATOR
Top
Debris
Shield
Shell
Ignitor
Electrode Pilot
Burner
Tube
Thermocouple
Base
Piezo Ignitor
Button
Main Burner
Valve
Main Burner
Valve Handle
Automatic
Control Valve
Button
Inlet
Connector
Hose/Regulator
Assembly
Automatic
Control Valve

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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
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
ignites the main burner.
The Automatic Control System: This system causes the heater to shut down
if the flame goes out.
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 Liquefied Petroleum Gas,
ANSI/NFPA 58 and/or CAN/CGA B149.2. Your local library or fire department
will have this booklet.
This heater will operate with a 20-pound propane tank. However, you can only
operate it in the LOW position during mildly cool weather. At higher heat settings
or during colder weather, you must use larger tanks.
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 minimum number of 100-pound tanks needed to run
the heater. Connect tanks together with a manifold.
Less gas is vaporized at lower temperatures. 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 111122
VENTILATION WARNING
Provide at least a 2.5 square foot opening of fresh, outside air
while running heater. 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
3. Connect hose to the inlet connector. Tighten firmly using a 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 regula-
tor supplied with heater even if propane tank has one.
Figure 2 - Regulator With Vent Pointing Down
Continued
Figure 3 - Hose and Inlet Connector
HIGH
LOW
OFF
INDICATOR
Hose
Inlet Connector
POL Fitting
Hose
Regulator
Vent
(pointing down)
Supply Valve
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 a wrench.
IMPORTANT: Tighten regulator with vent pointing down. Pointing vent
down protects regulator from weather damage.
Propane
Tank
WARNING
Test all gas piping and connections for leaks after installa-
tion or servicing. Correct all leaks at once.
WARNING
Review and understand the warnings in the Safety Informa-
tion section, pages 2 and 3. They are needed to safely oper-
ate this heater. Follow all local codes when using this heater.

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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.
6. Close propane supply valve.
OPERATION
Continued
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.
3. Open propane supply valve on propane tank(s) slowly. Note: If not opened
slowly, excess-flow check valve on propane tank may 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 piezo ignitor button 3-8
times until the pilot lights. When pilot lights, keep automatic control valve
button pushed in. Release after 30 seconds.
Note: If pilot fails to light, hose may have air in it. If so, keep automatic control
valvebuttonpressedandwait20seconds.Releaseautomaticcontrolvalvebutton
and wait 20 seconds for unburned fuel to exit heater. Repeat step 4.
Figure 4 - Main Burner Valve Handle, Automatic Control Valve Button,
and Piezo Ignitor Button Locations
H
INDICATO
R
Main Burner
Valve Handle
Piezo Ignitor
Button
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, pages 2 and 3. They are needed to safely oper-
ate this heater. Follow all local codes when using this 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.

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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 valve
handle to the HIGH position. You can now position the handle to any setting
between HIGH and LOW.
CAUTION
Only use the main burner valve handle to adjust the burner
flame. Always turn handle pointer to the HIGH position
before turning it to a lower position. Never set handle
pointer between the LOW and OFF positions.
HIGH
LOW
OFF
INDICATOR
Slight Yellow Coloring
on Flame Ends
Blue Flame
Correct Flame Pattern
Burner
Tube
Figure 5 - Normal Flame Pattern at High Position
CAUTION
Running heater below specified input rating may cause
flashback. During flashback, the burner flame is mostly
yellow. The flame will burn inside the burner tube, causing a
roaring noise. If flashback occurs, turn heater off. After
burner tube cools, restart the heater.
Flame Patterns
Figure 5 shows a correct flame pattern. The burner flame is mostly blue with a
slight yellow coloring on the ends.
Figure 6 shows an incorrect flame pattern. The flame is mostly yellow. The
incorrect flame pattern results from running heater below the LOW position or
from flashback.

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HIGH
LOW
OFF
INDICATOR
To Stop Heater
1. Tightly close propane supply valve on propane tank(s). Allow heater to burn
remaining fuel in hose.
2. Shut off main burner valve. Do this by turning valve handle towards the OFF
position until it stops.
To Restart Heater
1. Wait five minutes after stopping heater.
2. Restart heater by following steps under To Start Heater, page 7.
1. Store propane tank(s) in safe manner. Refer to Chapter 5 of Standard for
Storage and Handling of Liquefied Petroleum Gases, ANSI/NFPA 58 and/or
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 a dry, clean, and safe place.
STORAGE
Figure 6 - Flame Pattern during Flashback
Yellow Flame
Blue Flame
Flame Inside
Burner Tube
(makes roaring noise)
Incorrect Flame
Pattern–Flashback
Burner
Tube
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.

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MAINTENANCE WARNING
Never attempt to service heater while it is connected to
propane supply, operating, or hot. Severe burns can occur.
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 orifice
3. Low gas pressure
4. Low fuel supply
REMEDY
1. Open propane supply valve
slowly.
2. Close propane supply valve on
propanetankandreopenslowly.
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 HIGH position until it
stops.
2. Replace gas orifice.
3. Check gas supply; check
regulator output.
4. Consult propane gas supplier.
TROUBLE-
SHOOTING 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.