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105338

PROPANE CONSTRUCTION HEATER

50,000 BTU/HR

SPECIFICATIONS

Output Rating (BTU/Hr)

High

49,500

Low

30,000

Fuel

Propane Vapor Only

Fuel Consumption

Gallons/Hour

2.19 / 1.09

Pounds/Hour

9.28 / 4.64

Supply Pressure To Regulator

Minimum (for input adjustment)

10 psi

     Maximum

200 psi

Regulator Outlet Pressure

High

18" WC

Manifold Pressure

High

13.7" WC

Low

17" WC

Hot Air Output (CFM Approx)

275

Motor

3300 RPM

Electric Input

120 volt/60 hertz

Amperage

2

Ignition

Manual, Piezo

Ignitor Gap

0.17"

Temperature Range for Operation*

-20

°

F to 85

°

F *

Heater Weight (Pounds)

14.5

Shipping Weight

16

Size - L x W x H (Inches)

18.5 x 7.7 x 12.8

* When running heater in temperatures above 85

°

 F, high internal temperatures may cause

thermal limit device to shut down heater.

PARTS UNDER WARRANTY

Contact authorized dealers of this product.
If they can’t supply original replacement
part(s), either contact your nearest autho-
rized service center or call DESA
International’s Technical Service Depart-
ment at 1-800-323-5190.

When calling DESA International, have
ready

• your name

• your address

• model number of your heater

• how heater was malfunctioning

• purchase date

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 for referral
information.

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 fa-
tal injuries. This will also protect
your warranty coverage for parts
replaced under warranty.

ACCESSORIES

Purchase accessories and parts from your
nearest dealer or service center. If they can
not supply an accessory or part, either con-
tact your nearest Parts Central (listed in the
separate Authorized Service Center book-
let) or contact DESA International for infor-
mation.

Part Number

Description

LPA3105

Hose/Regulator Assembly

U.L. listed.

LPA4020

Fuel Gas Connector

Connects regulator to all standard propane tanks.
U.L. and A.G.A. listed.

DESA International
P.O. Box 90004
Bowling Green, KY
42102-9004
1-800-972-7879
Parts Department

Summary of Contents for RM50PVA

Page 1: ...SPHYXIATION CARBON MONOXIDE POI SONING 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 Model RM50PVA IMPORTANT Read and understand this manual before assembling starting or servicing heater Improper use of heater can c...

Page 2: ...Electric Code ANSI NFPA 70 or Cana dian 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 Use only a three prong grounded exten sion cord Use only the hose and factory preset regulator provided with the heater Us...

Page 3: ... fire department will have this booklet The amount of propane gas ready for use from propane tanks varies Two factors de cide this amount 1 The amount of propane gas in tank s 2 The temperature of tank s This heater is designed to operate with a minimum20 poundpropanetank Youmay need two or more tanks or one larger tank in colder weather Use a 100 pound tank for longer operation or in very cold we...

Page 4: ...ber Motor Clean Heated Air Out Front Hose Regulator Assembly Cool Air In Back Figure 2 Cross Section Operational View Fan ASSEMBLY 1 Remove screw from top of fan guard Discard screw 2 Insert nut clip provided with handle with flat side facing up through slot in top of shell Align holes in nut clip with screw hole behind slot in top of shell see Figure 4 3 Place handle over hole and clip Insert two...

Page 5: ...plied with heater 4 Open propane supply valve on propane tank s slowly Note If not opened slowly excess flow check valve on pro pane tank may stop gas flow If this happens close propane supply valve and open again slowly 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 WARNING Test...

Page 6: ...If main burner fails to light hose mayhaveairinit Ifso keepcontrolknob pressedandwait20seconds Releasecon trolknobandwait20secondsforunburned fuel to exit heater Repeat step 6 7 If main burner goes out repeat step 6 8 When main burner remains lit rotate control knob to the desired heat level WARNING Besuremotorand fan are running before pushing in automatic control valve but ton Flames could flash...

Page 7: ...rmal limit device to shut down heater 2 Restricted air flow 3 Damaged fan 4 Excessive dust or debris in surrounding area OBSERVED FAULT Fan does not turn when heater is plugged in Heater will not ignite Heater shuts down while running WARNING Never service heater while it is plugged in connected to propane supply operating or hot Severe burns and electrical shock can occur TROUBLESHOOTING MAINTENA...

Page 8: ...rd old motor 7 Attach green power cord wire to motor 8 Attach fan guard to new motor with two nuts and two screws 9 Replace black and white terminals 10 Place fan onto motor shaft of new mo tor Make sure set screw contacts flat surface on motor shaft Tighten set screw firmly 40 50 inch pounds 11 Place motor and fan guard into rear of heater shell Make sure power cord is properly located see Figure...

Page 9: ...l not to damage the fan blade pitch 5a If replacing fan remove old fan and discard Go to step 7 below 5b If cleaning fan use soft cloth moistened with kerosene or solvent 6 Dry fan thoroughly 7 Place fan onto motor shaft Make sure set screw contacts flat surface on mo tor shaft Tighten set screw firmly 40 50 inch pounds 8 Place motor and fan guard into rear of heater shell Make sure power cord is ...

Page 10: ...10 105338 PROPANE CONSTRUCTION HEATER 50 000 BTU HR ILLUSTRATED PARTS BREAKDOWN RM50PVA 28 27 15 17 18 21 1 2 3 2 4 6 7 9 11 21 22 23 24 25 19 2 10 26 16 12 13 14 5 20 20 8 ...

Page 11: ...84 38 Hex Tap Screw 8 18 x 3 8 1 12 101478 03 Fan 1 13 105332 01 Motor 1 14 103863 01 Fan Guard 1 15 097384 02 Captive Washer Nut 3 16 097968 05 Hex Screw 4 40 x 1 2 2 17 NPC 00C Hex Nut 4 40 2 18 101481 04 Thermal Switch 1 19 097776 01 Universal Bushing 1 20 099237 01 Thermocouple Nut 2 21 104146 01 Thermocouple 1 22 103921 01 Valve Orifice Assembly 1 23 102445 01 Piezo Ignitor 1 24 078978 03 Sle...

Page 12: ...w heater was malfunctioning purchase date 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 for referral information When calling DESA International have...

Page 13: ...____________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ ___________________________________________________________________________________________...

Page 14: ...enance is the responsibility of the owner THISEXPRESSWARRANTYISGIVENINLIEUOFANYOTHERWARRANTYEITHEREXPRESSEDORIMPLIED INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE DESA International assumes no responsibility for indirect incidental or consequential damages Some states do not allow the exclusion or limitationofincidentalorconsequentialdamages orlimitationsorexclusions...

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