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105342

OWNER’S MANUAL

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 into front or rear of heater.

3.

Make sure the control knob is in the
OFF position.

4.

Plug power cord of heater into a
three-prong, grounded extension
cord. Extension cord must be at least
six feet long, UL/CSA listed, and of
a proper size.

Extension Cord Size Requirement

Up to 100 feet long, use 16 AWG rated
cord.

101 to 200 feet long, use 14 AWG rated
cord.

5.

Plug extension cord into a 120 volt/60
hertz, 3-hole, grounded outlet. Motor
will start. Fan will turn, forcing air out
front of heater.

6.

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 you may
hear a click inside the regulator assembly.
If this happens, reset the excess-flow
check valve by closing propane supply
valve and open again slowly.

7.

Press and hold in control knob. Turn
counterclockwise to the LOW position.
Heater should ignite within a few
seconds.

OPERATION

WARNING: Follow the mini-

mum fresh, outside air ventila-
tion requirements.  If proper fresh,
outside air ventilation is not pro-
vided, carbon monoxide poison-
ing can occur. Provide proper
fresh, outside air ventilation be-
fore running heater.

WARNING: Review and under-

stand the warnings in the 

Safety

Information section, page 2. They
are needed to safely operate this
heater. Follow all local codes
when using this heater.

Note: 

 If heater fails to ignite, hose may

have air in it. If so, keep control knob
pressed and wait 20 seconds. Release
automatic control valve button and wait
20 seconds for unburned fuel to exit
heater. Repeat step 7.

8.

After heater ignites, wait 30 seconds.
This activates the automatic control
system. Release the control knob.

9.

When burner remains lit, set heater at
the desired heat level by turning the
control valve counterclockwise. If
burner goes out, turn off gas. Turn
control knob fully clockwise to the
lowest position. Check fuel supply. If
adequate fuel is available, restart heater
beginning at step 1.

TO STOP HEATER

1.

Tightly close propane supply valve on
propane tank(s).

2.

Wait a few seconds. Heater will burn
gas left in supply hoses.

3.

Turn control knob to the OFF position.

4.

Unplug heater.

STORAGE

1.

Store propane tank(s) in safe manner.
See Chapter 5 of Standard for Storage
and Handling of Liquefied Petroleum
Gases, ANSI/NFPA 58
 and the Propane
Installation Code 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 dry, clean, and safe place. Do
not store hose/regulator assembly
inside heater combustion chamber.

4.

When taking heater out of storage,
always check inside of heater. Insects
and small animals may place foreign
objects in heater. Keep inside of heater
free from combustible and foreign
objects.

CAUTION: Disconnect heater

from propane supply tank(s).

MAINTENANCE

WARNINGS

• Never service heater while it is

plugged in, connected to pro-
pane supply, operating, or hot.
Severe burns and electrical
shock can occur.

• Keep heater clear and free from

combustible materials, gaso-
line, and other flammable va-
pors and liquids.

• Do not block the flow of com-

bustion or ventilation air.

1.

Keep heater clean. Clean heater
annually or as needed to remove dust
and debris. If heater is dirty or dusty,
clean heater with a damp cloth. Use
household cleaners on difficult spots.

2.

Inspect heater before each use. Check
connections for leaks. Apply mixture
of liquid soap and water to connections.
Bubbles forming show a leak. Correct
all leaks at once.

3.

Inspect hose/regulator assembly before
each use. If hose is highly worn or cut,
replace with hose specified by
manufacturer.

4.

Have heater inspected yearly by a
qualified service agency.

5.

Keep inside of heater free from
combustible and foreign objects.
Remove motor and other internal parts
if needed to clean inside of heater (see
Service Procedures, page 7).

6.

Clean fan blades each season or as
needed (see Fan, page 7).

Summary of Contents for RM100LP

Page 1: ...D 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 RM100LP PROPANE CONSTRUCTION HEATERS OWNER S MANUAL IMPORTANT Read and understand this manual before assem bling starting or servicing heater Improper use of heater can cau...

Page 2: ...nadian 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 Approved by the New York City Fire Department under Certificate of Approval 4953 To be used only at construction site with applicable New...

Page 3: ...automatic control valve and out the nozzle 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 The Ignition System The spark trans former and ignitor lights the main burner The Safety Control System This sys tem causes the heater to shut down if the flame goes out Figure 2 Cross Section Operation...

Page 4: ... by the user 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 the Propane Installation Code CAN CGA B149 2 Your local library or fire de partment 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 ...

Page 5: ...r goes out turn off gas Turn control knob fully clockwise to the lowest position Check fuel supply If adequate fuel is available restart heater beginning at step 1 TO STOP HEATER 1 Tightly close propane supply valve on propane tank s 2 Wait a few seconds Heater will burn gas left in supply hoses 3 Turn control knob to the OFF position 4 Unplug heater STORAGE 1 Store propane tank s in safe manner S...

Page 6: ...ee Fan page 7 5 Clean heater See Maintenance page 5 WARNING Use only in areas free of high dust content 1 No electrical power to heater 2 Fan hitting inside of heater shell 3 Fan blades bent 4 Defective motor 1 User did not follow installation or operation instructions properly 2 No spark at ignitor To test for spark follow step 8 under Ignitor page 8 If you see spark at ignitor have heater servic...

Page 7: ...Figure 8 5 Place setscrew on flat of shaft Tighten setscrew firmly 40 50 inch pounds 6 Place motor motor mount and fan guard into rear of heater shell see Motor steps 14 through 18 Motor shaft Fan Setscrew Figure 8 Fan Motor Shaft and Setscrew Location Figure 9 Fan Cross Section Fan Hub Setscrew Motor Transformer Green Lead Continued 6 Carefully pull motor and fan out of shell IMPORTANT Be careful...

Page 8: ... ignitor electrode and nozzle to 13 15 see Figure 12 8 Test for spark WARNING Make sure heater is disconnected from propane supply Heater could ignite caus ing severe burns Plug into extension cord and watch for spark between ignitor electrode and nozzle 9 Place motor motor mount and fan guard into rear of heater shell see Motor page 7 steps 14 through 18 ACCESSORIES Purchase accessories and parts...

Page 9: ...ER 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 Tech nical Service Department 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...

Page 10: ...NE CONSTRUCTION HEATER ILLUSTRATED PARTS BREAKDOWN 100 000 Btu Hr 2 5 6 7 21 NOTE Screws are standard hardware items 14 15 2 12 13 16 2 8 9 10 18 19 20 21 4 11 26 3 1 2 22 23 17 29 30 32 34 35 33 26 25 31 32 33 27 28 28 31 27 24 11 ...

Page 11: ...3 Control Knob 1 18 101732 04 Thermal Switch Kit Incl Wire Assemblies 1 19 102487 01 lgnitor Electrode 1 20 097806 02 lgnitor Cable 1 21 M11084 38 Screw Hex TPG 8 18 X 38 2 22 098219 17 Power Cord 1 23 M11143 1 Strain Relief Bushing 1 24 103846 01 Valve Kit 1 25 102601 01 Ignition Control 1 26 079010 30 Wire Assembly Relay 1 27 079010 19 Wire Assembly Relay 1 28 097951 14 Wire Assembly Relay 1 29 ...

Page 12: ... 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 WARRANTY AND REPAIR SERVICE LIMITED WARRANTY KEEP THIS WARRANTY For information write DESA International P O Box 90004 Bowling Green Kentucky 42102 9004 ATT...

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