Desa RM35E User manual

PROPANE
CONSTRUCTION
HEATER
OWNER’S MANUAL
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.
Model: BLP35E

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102588
Safety Information.........................................................................2
Unpacking......................................................................................3
Product Identification .................................................................... 4
Theory of Operation ......................................................................4
Propane Supply..............................................................................5
Installation .....................................................................................5
If Gas Leak Occurs ........................................................................6
Ventilation .....................................................................................6
Operation .......................................................................................7
Storage ........................................................................................... 8
Maintenance ..................................................................................8
Wiring Diagram.............................................................................8
Troubleshooting.............................................................................9
Service Procedures ........................................................................ 10
Electrical System .................................................................... 10
Motor.......................................................................................10
Fan........................................................................................... 11
Ignitor......................................................................................12
If Gas Leak Occurs ........................................................................13
Specifications................................................................................. 13
Illustrated Parts Breakdown and Parts List ...................................14, 15
Warranty and Repair Service.........................................................Back Cover
SECTION PAGE
CONTENTS
SAFETY
INFORMATION IMPORTANT: Read this owner’s manual carefully and completely
beforetryingtoassemble,operate,orservicethisheater.Improperuse
of this heater can cause serious injury or death from burns, fire,
explosion, electrical shock, or carbon monoxide poisoning.
Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning
resemble the flu, 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. Some people are more affected by carbon monoxide than others. These
include pregnant women, people with heart or lung disease or anemia, those under
the influence of alcohol, and those at high altitudes.
PropaneGas:Propanegasisodorless.Anodor-makingagentisaddedtopropane
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.
Makecertainyoureadandunderstandallwarnings.Keepthismanualforreference.
It is your guide to safe and proper operation of this heater.
Safety Information continues on next page
!
WARNINGS
FOR YOUR SAFETY
Do not use this heater in a space where gasoline or other
liquids having flammable vapors are stored or used.

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SAFETY
INFORMATION
Continued
•Not for domestic use (inside living areas). Use heater for space heating only.
•Intended for temporary heating of buildings under construction, alteration, or repair.
•Install and use heater with care. Follow all local ordinances and codes.
•Use only in a well-vented area away from combustible materials.
•Provide proper ventilation. If not, excessive levels of carbon monoxide (CO)
and carbon dioxide (CO2) will form. Provide two fresh, outside air openings
for ventilation. One opening should be near the floor, the other opening near
the ceiling. Each ventilation opening must be at least 130 cm2.
•Never use heater where gasoline, paint thinner, or other highly flammable
vapors are present. Use only in places free of flammable vapors or high dust
content.
•Do not use heater in basements. Propane gas is heavier than air. If a leak
occurs, propane gas will sink to the lowest possible level.
•Keep heater away from strong drafts, water spray, rain, or dripping water.
•Check heater for damage before each use. Do not use a damaged heater.
•Use only propane gas, I3P.
•Keep propane tank(s) below 38°C.
•Do not pull or twist gas hose.
•Unhook heater from propane and electrical supply before moving or when not
in use.
•Use only the electrical voltage and frequency specified on model plate.
•Use only the hose and regulator provided with the heater.
•Inspect hose before each use. If cut, worn, or damaged, replace before using
heater. Use the replacement hose assembly specified in this manual.
•Keep heater at least two meters from propane tank(s). Do not point heater at
propane tank(s).
•Minimum heater clearances from combustibles:
Outlet: 3 meters Sides: 1 meter Top: 2 meters Rear: 1 meter
•Locate heater on stable and level surface if heater is hot or running.
•Keep children and animals away from heater.
•Never block air inlet (rear) or air outlet (front) of heater.
•Never move, handle, or service a hot, operating, or plugged-in heater.
•Do not alter heater. Keep heater in its original state.
•Do not use heater if altered.
•Never attach duct work to front or rear of heater.
•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.
•Electrical installer: Follow all national and local codes.
!
WARNINGS Continued
1. Remove all packing items applied to heater for shipment.
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

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PRODUCT
IDENTIFICATION
Hot Air Outlet
(Front) Shell
Handle Motor
Fan Guard
Piezo Ignitor
Button
Heater Base
Automatic
Control Valve
Button Inlet
Connector
Hose /Regulator
Assembly
Figure 1 - Model BLP35E
Clean
Heated
Air Out
(Front) Cool Air In
(Back)
Combustion
Chamber Fan Motor
Hose/Regulator
Assembly
Figure 2 - Cross Section Operational View
THEORY OF
OPERATION
The Fuel System: The hose/regulator assembly attaches to the propane gas
supply. This provides fuel to the heater.
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 piezo ignitor lights the burner.
The Burner Control System: This system causes the heater to shut down if
the flame goes out.
Power
Cord
Air For Combustion Air For Heating

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PROPANE
SUPPLY
User must provide propane gas and propane tank(s).
Use this heater only with a propane vapor withdrawal supply system. 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)
This heater is designed to operate with a minimum 9-kg propane tank. You may
need two or more tanks or one larger tank in colder weather. Use a 45-kg tank for
longer operation or in very cold weather. Less gas is vaporized at lower tempera-
tures. Your local propane gas dealer will help you select the proper supply system.
Average Temperature (°C)
At Tank Location 5° 0° -7° -12° -18°
Number Of Tanks
(45-kg) 1111 1
INSTALLATION
!
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.
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.
!
WARNING
1. Provide propane supply system (see Propane Supply, above).
2. Connect fuel gas connector on hose/regulator assembly to propane tank(s).
Tighten firmly using wrench.
IMPORTANT: Position regulator so that hose
leaving the regulator is in a horizontal position (see Figure 3). This places the
regulator vent in the proper position to protect it from the weather.
Propane
Tank
Regulator
Hose
Fuel Gas
Connector
Propane
Supply
Valve
Continued
Figure 3 - Regulator Position

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!
WARNING
!
WARNING
INSTALLATION
Continued
3. Connect hose to 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.
Inlet Connector Hose
Figure 4 - Hose and Inlet Connector
4. Open propane supply valve on propane tank(s).
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.
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.
6. Close propane supply valve.
Provide proper ventilation. If proper fresh, outside air ventilation
is not provided, carbon monoxide poisoning can occur. Provide
two fr esh, outside air openings for ventilation. One opening
should be near the floor, the other opening near the ceiling.
Each ventilation opening must be at least 130 cm2. Provide
proper fresh, outside air ventilation before running heater.
VENTILATION
IF GAS LEAK
OCCURS
!
WARNING
If you detect a gas leak, turn off propane supply at once.
Ventilate the area. Wait until five minutes after propane odor is
not present. Follow steps below to check for gas leak.
!
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. Correct all leaks at once.
1. After turning off propane supply and ventilating area, unplug heater power cord.
2. Turn propane supply on.
3. Apply a mixture of liquid soap and water to hose and connections between
propane tank(s) and heater inlet. Bubbles forming show a leak.
4. Turn propane supply off and ventilate the area. Repair leak.
5. Wait until five minutes after propane odor is not present before restarting heater.
6. If you cannot repair leak, contact your local service center.

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OPERATION
Visually check combustion in heater. Be sure the flame is blue in color. Flames
must not extend beyond the heater outlet.
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 hose.
3. Unplug heater.
To Restart Heater
1. Wait five minutes after stopping heater.
2. Repeat steps under To Start Heater, above.
To Change Propane Tank(s)
Change propane tank(s) in a flame-free area. Use only propane gas, I3P.
1. Tightly close the propane supply valve(s) on the propane tank(s).
2. Disconnect the hose/regulator assembly from the propane tank(s).
3. Connect the hose/regulator assembly to the new propane tank(s). Tighten firmly.
4. Check all connections for leaks.
!
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. Correct all leaks at once.
Figure 5 - Automatic Control Valve Button and Piezo Ignitor Button
Piezo Ignitor
Button
Automatic Control
Valve Button
!
WARNING
Be sure motor and fan are running before pushing in
automatic control valve button.
5. Push in and hold automatic control valve button (see Figure 5). Push piezo
ignitor button (see Figure 5). You may need to push piezo ignitor button 3-8
times until the burner lights. When burner lights, keep automatic control valve
button pushed in for 30 seconds.
Note: If heater fails to ignite, hose may have air in it. If so, keep automatic
control valve button pressed and wait 20 seconds. Release automatic control
valve button and wait 20 seconds for unburned fuel to exit heater. Repeat step 5.
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. Plug heater power cord into electrical source. Motor will start. Fan will turn,
forcing air out front of heater. Electric gas valve will open.
4. Open propane supply valve on propane tank(s).
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

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!
CAUTION
Disconnect heater from propane supply tank(s).
STORAGE
1. Store propane tank(s) in safe manner. Follow all local codes. Always store
propane tanks outdoors.
2. Store in dry, clean, and safe place. Do not store hose/regulator assembly inside
heater combustion chamber.
3. 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. Remove motor and other internal parts
if needed to remove foreign objects (see Service Procedures, page 10).
MAINTENANCE
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.
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.
4. Have heater inspected yearly by service person.
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 10).
6. Clean fan every 500 hours of operation or as needed.
!
WARNING
Never service heater while it is plugged in, connected to
propane supply, operating, or hot. Severe burns and
electrical shock can occur.
P
i
e
z
o
Power
Cord
Motor
L1
L1
L2
L2
L2
L1
Solenoid
Valve
Thermal
Switch
L1
L2
Shell
Automatic
Control Valve
Thermocouple
Figure 6 - Wiring Diagram
WIRING
DIAGRAM

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!
WARNING
Checkcurrent toelectricalout-
let. If current is good, check
heater power cord for breaks.
Adjustmotor/fanguardtokeep
fan from hitting inside of
heater shell. Bend fan guard if
necessary.
Relocate wires using wiring
diagram.
Replace fan. See Motor and
Fan, page 10.
Replace motor. See Motor and
Fan, page 10.
Repeat installation and opera-
tion instructions. See Installa-
tion, page 5 and Operation,
page 7.
A)Checkignitorwire.Tighten
or reattach loose ignitor wire.
SeeFigure11,page11forigni-
tor wire location.
B) Set gap between ignitor
electrode and target plate to
4.3 mm.
C) Tighten nut holding piezo
ignitor to base of heater.
D) Replace ignitor electrode.
See Ignitor, page 11.
This can happen when running
heater in temperatures above
29°C. Run heater in cooler
temperatures.
Check heater inlet and outlet.
Remove any obstructions.
Replace fan. See Motor and
Fan, page 11.
Clean heater. See
Maintenance, page 8.
Never service heater while it is plugged in, connected to
propane supply, operating, or hot. Severe burns and
electrical shock can occur.
TROUBLE-
SHOOTING
No electrical power to
heater
Fan hitting inside of
heater shell
Heater electrical wiring
improperly connected
Fan blades bent
Defective motor
Userdidnotfollowinstal-
lation or operation in-
structions properly
No spark at ignitor. To
test for spark, follow step
8 under Ignitor, page 11.
If you see spark at ignitor,
have heater serviced by
qualified service person.
If no spark seen:
A) Loose or disconnected
ignitor wire
B) Wrong spark gap
C) Piezo ignitor loose
D) Bad ignitor electrode
Highsurroundingairtem-
perature causing thermal
limit device to shut down
heater.
Restricted air flow
Damaged fan
Excessive dust or debris
in surrounding area
Fan does not turn
when heater is
plugged in.
Heater will not
ignite.
Heater shuts down
while running.
OBSERVED FAULT POSSIBLE CAUSE REMEDY
!
WARNING
Use only in areas free of
high dust content.

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!
WARNING
SERVICE
PROCEDURES Never service heater while it is plugged in, connected to
propane supply, operating, or hot. Severe burns and
electrical shock can occur.
Motor and Fan
1. Remove three screws that
attach fan guard to heater
shell.
2. Remove motor and fan
guard from heater shell
(see Figure 7).
3. Use pliers to remove the
fan nut from front of
motor shaft (see Figure 8).
4. Remove fan. Be careful not
to damage fan blade pitch.
5. Remove three nuts that
attach fan guard to motor
using nut-driver. Remove
fan guard from motor (see
Figure 9).
6. Discard old motor.
7. Attach fan guard to new
motor with three nuts (see
Figure 9). Tighten nuts
firmly.
8. Place fan onto motor shaft
of new motor.
IMPORTANT: When
placing fan onto motor
shaft, make sure part
number stamped on fan is
facing motor. Attach fan
nut to end of motor shaft.
Tighten fan nut firmly.
9. Place motor and fan guard
into rear of heater shell (see
Figure 10).
10.Insert three screws through
heater shell and into fan
guard. Tighten screws firmly.
Figure 7 - Removing Motor and Fan Guard from Heater
Figure 8 - Removing Fan Nut from
Motor Shaft
Fan
Nut
Figure 9 - Removing or Attaching
Fan Guard from Motor
Figure 10 - Replacing Motor and Fan Guard into Heater