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PROPANE
CONSTRUCTION
HEATER
OWNER’S MANUAL
Model: RM50PVA
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 POI-
SONING, A
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50,000 BTU/HR PROPANE CONSTRUCTION HEATER Propane Gas: Propane gas is odorless. • Do not use heater in occupied dwellings SAFETY An odor-making agent is added to propane or in living or sleeping quarters. INFORMATION gas. The odor helps you detect a propane gas • Do not use heater below ground level. leak. However, the odor added to propane Propane gas is heavier than air. If a leak WARNINGS gas may fade. Propane gas may be present WARNING ICON G 001 occurs, propane gas may sink to the low- eve
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OWNER’S MANUAL PRODUCT UNPACKING IDENTIFICATION 1. Remove all packing items applied to heater for shipment. Keep plastic cover Hot Air Outlet caps (attached to inlet connector and (Front) hose/regulator assembly) for storage. Shell 2. Remove all items from carton. 3. Check all items for shipping damage. If heater is damaged, promptly inform Handle dealer where you bought heater. PROPANE SUPPLY Motor Propane gas and propane tank(s) are to be furnished by the user. Use this heater only with a prop
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50,000 BTU/HR PROPANE CONSTRUCTION HEATER Combustion Chamber Fan THEORY OF Motor OPERATION THE FUEL SYSTEM The hose/regulator assembly attaches to the Clean propane gas supply. This provides fuel to Heated Air the heater. Cool Air Out In (Back) (Front) 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. Hose/ Regulator THE IGNITION SYSTEM Assembly The piezo ignitor lights the burner. THE AU
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OWNER’S MANUAL INSTALLATION VENTILATION WARNING: Never use an open flame to check for a leak. Apply a WARNING: Review and un- WARNING: Provide at least a mixture of liquid soap and water derstand the warnings in the to all joints. Bubbles forming 1.5 square foot opening of fresh, Safety Information section, page show a leak that must be cor- outside air while running heater. 2. They are needed to safely op- If proper fresh, outside air venti- rected. Correct all leaks at once. erate this heate
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50,000 BTU/HR PROPANE CONSTRUCTION HEATER 6. Turn control knob to the low position TO STOP HEATER OPERATION and push in (see Figure 8). Hold knob 1. Tightly close propane supply valve on in and push piezo ignitor button. You propane tank(s). Allow heater to burn WARNING: Review and un- may need to push piezo ignitor button remaining fuel in hose. derstand the warnings in the 3-8 times until the main burner lights. 2. Shut off main burner valve. Do this by Safety Information section, page When m
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OWNER’S MANUAL 1. Keep heater clean. Clean heater annu- 4. Have heater inspected yearly by a quali- MAINTENANCE ally or as needed to remove dust and fied service agency. debris. If heater is dirty or dusty, clean 5. Keep inside of heater free from com- WARNINGS heater with a damp cloth. Use house- bustible and foreign objects. Remove • Never service heater while it is hold cleaners on difficult spots. motor and other internal parts if needed plugged in, connected to pro- 2. Inspect heater befor
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50,000 BTU/HR PROPANE CONSTRUCTION HEATER SERVICE PROCEDURES You can also visit DESA International’s Technical Service web site at www.desatech.com. WARNING: Never service heater while it is plugged in, con- nected to propane supply, oper- ating, or hot. Severe burns and electrical shock can occur. ELECTRICAL SYSTEM The entire electrical system for this heater is contained within the motor. If any part of the Figure 10 - Removing Motor and Fan Guard from Heater electrical system is damaged, you
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OWNER’S MANUAL SERVICE WARNING: Make sure heater Setscrew is disconnected from propane PROCEDURES supply. Heater could ignite caus- Continued ing severe burns. Fan 8. Test for spark. Push piezo ignitor but- 1. Remove three screws that attach fan ton and watch for spark between igni- guard to heater shell. tor electrode and target plate. 2. Remove motor and fan guard from 9. Place motor and fan guard into rear of heater shell (see Figure 14). heater shell (see Motor, page 8, steps 9 3. Use hex w
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50,000 BTU/HR PROPANE CONSTRUCTION HEATER ILLUSTRATED PARTS BREAKDOWN RM50PVA 1 2 7 3 10 4 11 2 18 17 16 2 20 19 9 6 20 21 22 21 24 15 23 12 27 13 14 5 25 28 8 26 105338 10
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OWNER’S MANUAL This list contains replaceable parts used in your heater. When ordering parts, follow the PARTS LIST instructions listed under Replacement Parts on page 12 of this manual. RM50PVA KEY PART NO. NO. DESCRIPTION QTY. 1 104154-01 Combustion Chamber 1 2 M11084-26 Hex Tap Screw, #10-16 x 3/8" 7 3 105333-02 Outer Shell 1 4 104786-01 Handle Kit 1 5 M11143-1 Bushing, Strain Relief 1 6 101480-12 Wire Assembly 1 7 M11084-27 Hex Tap Screw, #12-14 x 1/2" 3 8 099393-03 Knob, Control 1 9 105341-
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50,000 BTU/HR PROPANE CONSTRUCTION HEATER SPECIFICATIONS REPLACEMENT Output Rating (BTU/Hr) PARTS High 49,500 Low 30,000 WARNING: Use only original Fuel Propane Vapor Only replacement parts. This heater Fuel Consumption must use design-specific parts. Gallons/Hour 2.19 / 1.09 Do not substitute or use generic Pounds/Hour 9.28 / 4.64 parts. Improper replacement Supply Pressure To Regulator parts could cause serious or fa- Minimum (for input adjustment) 10 psi tal injuries. This will also protect
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OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________
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WARRANTY AND REPAIR SERVICE KEEP THIS WARRANTY LIMITED WARRANTY DESA International warrants this product and any parts thereof, to be free from defects in materials and workmanship for one (1) year from the date of first purchase when operated and maintained in accordance with instructions. This warranty is extended only to the original retail purchaser, when proof of purchase is provided. This warranty covers only the cost of parts and labor required to restore the product to proper operating co
