Desa RLP30A User manual

30/35/40,000 BTU/HR HEATER
PROPANE CONSTRUCTION FORCED AIR 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.
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 re, explosion, burn, asphyxiation, carbon monoxide
poisoning and/or electrical shock.
Only persons who can understand and follow the instruc-
tions should use or service this heater.
If you need assistance or heater information such as an in-
structions manual, labels, etc. contact the manufacturer.
TABLE OF CONTENTS
Safety .................................................................. 2
Unpacking............................................................ 3
Product Identication........................................... 3
Theory of Operation............................................. 4
Propane Supply................................................... 4
Installation ........................................................... 4
Ventilation ............................................................ 5
Operation............................................................. 5
Storage................................................................ 6
Maintenance........................................................ 7
Service Procedures ............................................. 7
Specications ...................................................... 9
Troubleshooting................................................. 10
Accessories ........................................................11
Technical Services..............................................11
Replacement Parts.............................................11
Parts .................................................................. 12
Warranty ............................................................ 14
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113855-01F2
SAFETY
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! Check for proper ventilation and
have heater serviced.
Propane Gas: Propane gas is odorless. An
odor-making agent is added to propane 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.
Make certain you read and understand all
warnings. Keep this manual for reference. It
is your guide to safe and proper operation of
this heater.
1. 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 Liqueed Petroleum Gas,
ANSI/NFPA 58 and the Propane Gas
Installation Code, CAN/CGA B149.2. This
instructs on the safe storage and handling
of propane gases.
2. Use only the electrical voltage and fre-
quency specied on model plate. The
electrical connections and grounding of
the heater shall follow the National Electric
Code, ANSI/NFPA 70 or the Canadian
Electrical Code, Part 1.
3. Electrical grounding instructions - This
appliance is equipped with a three-prong
(grounding) plug for your protection against
shock hazard and should be plugged di-
rectly into a properly grounded three-prong
receptacle or extension cord.
4. This product has been approved for use in
the Commonwealth of Massachusetts.
5. Use only a three-prong, grounded exten-
sion cord.
6. Use only the hose and factory preset
regulator provided with the heater.
7. Use only propane gas set up for vapor
withdrawal.
8. Provide adequate ventilation. Before
using heater, provide at least a 1.5 ft2
(1400 cm2) opening of fresh, outside air.
9. For indoor use only. Do not use heater
outdoors.
10. Do not use heater in occupied dwellings
or in living or sleeping quarters.
WARNING: This product
contains and/or generates
chemicals known to the State
of California to cause cancer or
birth defects or other reproduc-
tive harm.
WARNING: Fire, burn, in-
halation and explosion hazard.
Keep solid combustibles, such
as building materials, paper or
cardboard,a safe distanceaway
fromtheheaterasrecommended
by the instructions. Never use
the heater in spaces which do or
may contain volatile or airborne
combustibles or products such
asgasoline, solvents, paintthin-
ner, dust particles or unknown
chemicals.
WARNING: Not for home or
recreational vehicle use.
The heater is designed for use as a con-
struction heater in accordance with ANSI
Z83.7•CGA2.14-2000. Other standards
govern the use of fuel gases and heating
products for specic uses. Your local author-
ity can advise you about these. The primary
purpose of construction heaters is to provide
temporary heating of buildings under con-
struction, alteration or repair. Properly used,
the heater provides safe economical heating.
Products of combustion are vented into the
area being heated.
We cannot foresee every use which may be
made of our heaters. Check with your local
re 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 monoxide than oth-
ers. Early signs of carbon monoxide poisoning
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113855-01F 3
SAFETY
Continued
Hot Air Outlet
(Front) Outer Shell
Motor
Power
Cord
Ignitor
Button
Automatic
Control Valve
Button
Hose/Regulator
Assembly
Handle
Figure 1 - 35,000 Btu/Hr Model Shown
11. Do not use heater in basement or below
ground level. Propane gas is heavier than
air. If a leak occurs, propane gas will sink
to the lowest poss ble level.
12. Keep appliance area clear and free from
combustible materials, gasoline, paint
thinner and other flammable vapors and
liquids.
13. Do not use heater in areas with high dust
content. Dust is combustible.
14. Minimum heater clearances from combus-
tibles: Outlet: 6 Ft. (1.83 m), Sides: 2 Ft.
(0.61 m), Top: 6 Ft. (1.83 m), Rear: 2 Ft.
(0.61 m)
15. Keep heater at least six feet from propane
tank(s). Do not point heater at propane
tank(s) within 20 feet.
16. Keep propane tank(s) below 100° F
(37.8° C).
17. Check heater for damage before each
use. Do not use a damaged heater.
18. Check hose before each use of heater.
If highly worn or cut, replace with hose
specied by manufacturer before using
heater.
19. Locate heater on stable and level surface
if heater is hot or operating.
20. Not intended for use on nished floors.
21. Never block air inlet (rear) or air outlet
(front) of heater.
22. Keep heater away from strong drafts,
water spray, rain or dripping water.
23. Do not leave heater unattended.
24. Keep children and animals away from
heater.
25. Never move, handle or service a hot, op-
erating or plugged-in heater. Severe burns
may result. You must wait 15 minutes after
turning heater off.
26. To prevent injury, wear gloves when han-
dling heater.
27. Never attach duct work to front or rear of
heater.
28. Do not alter heater. Keep heater in its
original state.
29. Do not use heater if altered.
30. Turn off propane supply and unplug heater
when not in use.
31. Use only original replacement parts. This
heater must use design-specic parts.
Do not substitute or use generic parts.
Improper replacement parts could cause
serious or fatal injuries.
UNPACKING
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.
PRODUCT
IDENTIFICATION
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113855-01F4
INSTALLATION
Figure 2 - Cross Section Operational View
Air For Combustion Air For Heating
Clean Heated
Air Out (Front)
Fan Motor
Cool
Air In
(Back)
Combustion
Chamber
Hose/Regulator
Assembly
THEORY OF OPERATION
The Fuel System: The hose/regulator assem-
bly 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 combus-
tion chamber. This air is heated and provides
a stream of clean, hot air.
The Ignition System: The piezo ignitor lights
the burner.
The Automatic Control System: This system
causes the heater to shut down if the flame
goes out.
PROPANE SUPPLY
Propane gas and propane tank(s) are to be
furnished 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 Liqueed Petroleum Gas, ANSI/NFPA 58
and/or CAN/CGA B149.2. Your local library or
re department will have this booklet.
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 20 b (9 kg) propane tank. You may
need two or more tanks or one larger tank in
colder weather. It is recommended you use a
100 lb (45 kg) tank for longer operation. See
chart below. Less gas is vaporized at lower
temperatures. Your local propane gas dealer
will help you select the proper supply system.
The minimum surrounding air temperature
rating for each heater is 0° F (-18° C).
Average Temp No. Of Tanks
At Tank Location 100 lb (45 kg)
Above 0° F (-18° C) 1
Below 0° F (-18° C) 2
WARNING: Review and un-
derstand the warnings in the
Safety section, page 2. They are
needed to safely operate this
heater. Follow all local codes
when using this heater.
WARNING:Testallgaspiping
and connections for leaks after
installation or servicing. Never
use an open ame 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. Provide propane supply system (see
Propane Supply).
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113855-01F 5
VENTILATION
WARNING: Provide at least a 1.5 ft2(1400 cm2) opening of fresh,
outside air while running heater. If proper fresh, outside air ventila-
tion is not provided, carbon monoxide poisoning can occur. Provide
proper fresh, outside air ventilation before running heater.
OPERATION
2. Connect POL tting on hose/regulator
assembly to propane tank(s). Turn POL
tting counterclockwise into threads on
tank. Tighten rmly using wrench. IM-
PORTANT: Position regulator so that hose
leaving the regulator is in a horizontal po-
sition (see Figure 3, page 5). This places
the regulator vent in the proper position
to protect it from the weather.
3. Connect hose to valve inlet (see Figure
4). Tighten rmly 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 regulator
supplied with heater.
Figure 4 - Hose and Inlet Connector
Figure 3 - Regulator Position
Propane
Tank
Propane
Supply
Valve
Regulator
Hose
POL
Fitting
Hose
Inlet Connector
INSTALLATION
Continued
4. Open propane supply valve on propane
tank(s) slowly. Note: If not opened slowly,
excess-ow check valve on propane tank
will stop gas ow. You may hear a click
from the excess-ow check valve closing.
If this happens, reset the excess-ow
check valve by closing 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: Review and un-
derstand the warnings in the
Safety section, page 2. They are
needed to safely operate this
heater. Follow all local codes
when using this heater.
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 power cord of heater into a three-
prong, grounded extension cord. Exten-
sion cord must be at least six feet long.
Extension cord must be UL listed.
Extension Cord Wire Size Requirements
Up to 50 ft (15.24 m) long, use 18 AWG
rated cord.
51 to 100 ft (15.54 to 30.48 m) long, use
16 AWG rated cord.
101 to 200 ft (30.78 to 60.96 m) long, use
14 AWG rated cord.
4. 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.
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113855-01F6
Piezo
Ignitor
Automatic Control
Valve Button
OPERATION
Continued
Figure 5 - Automatic Control Valve
Button and Piezo Ignitor
5. Open propane supply valve on propane
tank(s) slowly. Note: If not opened slowly,
excess-ow check valve on propane tank
will stop gas ow. You may hear a click
from the excess-ow check valve closing.
If this happens, reset the excess-ow
check valve by closing propane supply
valve and open again slowly.
WARNING: Be sure motor
and fan are running before
pushing in automatic control
valve button. Flames could ash
outside heater if motor and fan
are not running.
6. Push in and hold automatic control valve
button (see Figure 5). Push piezo ignitor
button (see Figure 5). Keep pushing ig-
nitor button until the burner lights. When
burner lights, keep automatic control valve
button pushed in. Release button after
30 seconds. This activates the automatic
control system.
Note: If heater fails to ignite, hose may
have air in it. If so, keep automatic control
valve button pressed and wait 20 sec-
onds. Release automatic control valve
button and wait 20 seconds for unburned
fuel to exit heater. Repeat this step.
NOTICE:If heateris unpluggedor
poweroutageoccurswhileheater
isrunning,thethermallimitdevice
will stop fuel ow. A few seconds
occur before the thermal limit de-
vice activates. During this short
time, ames may appear outside
the heater. This is normal. The
ames will go out when thermal
limit device activates.
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 ve minutes after stopping heater.
2. Repeat steps under To Start Heater,
page 5.
STORAGE
CAUTION:Disconnectheater
from propane supply tank(s).
1. Store propane tank(s) in safe manner. See
Chapter 5 of Standard for Storage and
Handling of Liqueed Petroleum Gases,
ANSI/NFPA 58. Follow all local codes.
Always store propane tanks outdoors.
2. Place plastic cover caps over brass ttings
on inlet connector and hose/regulator as-
sembly.
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. Remove motor and other internal
parts if needed to remove foreign objects
(see Service Procedures, page 7).
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113855-01F 7
MAINTENANCE
Screw
Screw
Motor and
Fan Guard
2. Remove motor and fan guard from heater
shell (see Figure 6).
3. Use hex wrench to loosen set screw which
holds fan to motor shaft (see Figure 7).
Remove fan. Be careful not to damage
the fan blade pitch.
4. Remove two nuts and two screws that attach
fan guard to motor using nut-driver. Remove
fan guard from motor (see Figure 8).
Figure 6 - Removing Motor and Fan
Guard from Heater
Figure 7 - Setscrew Location
Setscrew
Figure 8 - Removing or Attaching Fan
Guard from Motor
Fan Guard
Motor
Screw
WARNINGS
• Never service heater while it
is plugged in, connected to
propane supply, operating or
hot. Severe burns and electri-
cal shock can occur.
• Keep heater clear and free
from combustible materials,
gasoline and other ammable
vapors and liquids.
• Do not block the ow 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
difcult 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, re-
place with hose specied by manufacturer.
4. Have heater inspected yearly by a quali-
ed service agency.
5. Keep inside of heater free from com-
bustible and foreign objects. Remove
motor and other internal parts if needed
to clean inside of heater (see Service
Procedures).
6. Clean fan blades each season or as
needed (see Fan, page 8).
SERVICE PROCEDURES
WARNING: Never service
heater while it is plugged in,
connected to propane supply,
operating 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 electrical system is damaged, you must
replace motor.
MOTOR
1. Remove three screws that attach fan
guard to heater shell.
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113855-01F8
Figure 9 - Replacing Motor and Fan
Guard Into Heater
SERVICE PROCEDURES
Continued
Figure 11 - Removing Ignitor Mounting
Screw and Ignitor
Figure 10 - Removing Ignitor Wire from
Piezo Ignitor
Ignitor
Mounting
Screw
Ignitor Wire
Piezo Ignitor
Underside
of Heater
Motor and
Fan Guard
Screw
Screw
5 Disconnect the green power cord wire
from motor and remove black and white
wire terminals.
6. Discard 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 motor.
Make sure set screw contacts flat surface
on motor shaft. Tighten set screw rmly
(40-50 inch-pounds [46.08-57.60 kilo-
gram-centimeters]).
11. Place motor and fan guard into rear of
heater shell. Make sure power cord is
properly located (see Figure 9).
12. Insert three screws through heater shell
and into fan guard (see Figure 9). Tighten
screws rmly.
FAN
1. Remove three screws that attach fan
guard to heater shell.
2. Remove motor and fan guard from heater
shell (see Figure 6, page 7).
3. Use hex wrench to loosen set screw that
holds fan to motor shaft (see Figure 7,
page 7).
4. Remove fan. Be careful not to damage
the fan blade pitch.
5a. If replacing fan, remove old fan and dis-
card. Go to step 7, column 2.
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 motor
shaft. Tighten set screw firmly (40-50
inch-pounds [46.08-57.60 kilogram-cen-
timeters]).
8. Place motor and fan guard into rear of
heater shell. Make sure power cord is
properly located (see Figure 9).
9. Insert three screws through heater shell
and into fan guard. Tighten screws
rmly.
IGNITOR
1. Remove motor and fan guard from heater
(see Motor, page 7, steps 1 and 2).
2. Remove black ignitor wire from piezo
ignitor. Access ignitor wire through under-
side of heater base (see Figure 10). Push
wire up through notch in ller panel.
3. Remove ignitor mounting screw from
rear head using nut-driver or standard
screwdriver (see Figure 11).
4. Remove ignitor from rear head.
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113855-01F 9
5. Install new ignitor. Attach ignitor to rear
head with ignitor mounting screw.
6. Run ignitor wire from new ignitor through
notch in ller panel. Attach ignitor wire to
piezo ignitor.
7. Set gap between ignitor electrode and target
plate to 0.17" (43.18 cm) (see Figure 12).
WARNING: Makesure heater
is disconnected from propane
supply. Heatercould ignitecaus-
ing severe burns.
8. Test for spark. Push piezo ignitor button
and watch for spark between ignitor elec-
trode and target plate.
Figure 12 - Clearance Between Ignitor
Electrode and Target Plate
Ignitor Electrode
Gap
Area
SPECIFICATIONS
SERVICE PROCEDURES
Continued
9. Place motor and fan guard into rear of
heater shell (see Motor, page 8, steps 9
and 10).
30,000 BTU MODELS
• 30,000 BTU/Hr Output Rating
• Fuel: Propane Vapor
• Fuel Consumption/Hour:
0.33 gal (1.25 liter), 1.4 lb (0.63 kg)
• Supply Pressure To Regulator:
Minimum* 20 psi, Maximum Tank Pressure
or 200 psi
• Regulator Outlet Pressure: 10 PSI
• Manifold Pressure: 10.1 PSI
• Hot Air Output (CFM Approx): 100
• Motor: 3045 RPM, 1/40 HP
• Electric Input: 120 volt/60 hertz
• Amperage: 0.6
• Ignition: Manual, Piezo
• Temperature Range for Heater Operation:
0° F to 85° F** (-17° C to 29.4° C**)
35,000 BTU MODELS
• 35,000 BTU/Hr Output Rating
• Fuel: Propane Vapor
• Fuel Consumption/Hour:
0.38 gal (1.44 liter), 1.62 lb (0.74 kg)
• Supply Pressure To Regulator:
Minimum* 20 psi, Maximum Tank Pressure
or 200 psi
• Regulator Outlet Pressure: 10 PSI
• Manifold Pressure: 10 PSI
• Hot Air Output (CFM Approx): 100
35,000 BTU MODELS (Cont.)
• Motor: 3045 RPM, 1/40 HP
• Electric Input: 120 volt/60 hertz
• Amperage: 0.6
• Ignition: Manual, Piezo
• Temperature Range for Heater Operation:
0° F to 85° F** (-17° C to 29.4° C**)
40,000 BTU MODELS
• 40,000 BTU/Hr Output Rating
• Fuel: Propane Vapor
• Fuel Consumption/Hour:
0.44 gal (1.65 liter), 1.86 lb (0.84 kg)
• Supply Pressure To Regulator:
Minimum* 20 psi, Maximum Tank Pressure
or 200 psi
• Regulator Outlet Pressure: 10 PSI
• Manifold Pressure: 10 PSI
• Hot Air Output (CFM Approx): 100
• Motor: 3045 RPM, 1/40 HP
• Electric Input: 120 volt/60 hertz
• Amperage: 0.6
• Ignition: Manual, Piezo
• Temperature Range for Heater Operation:
0° F to 85° F** (-17° C to 29.4° C)**
* For purposes of input adjustment
** When running heater in temperatures above 85° F
(29.44° C), high internal temperatures may cause
thermal limit device to shut down heater.
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113855-01F10
TROUBLESHOOTING
WARNING: Never service heater while it is plugged in, connected
to propane supply, operating or hot. Severe burns and electrical
shock can occur.
REMEDY
1. Check voltage to electrical
outlet. If voltage is good,
check heater power cord
for breaks
2. Adjust motor/fan guard to
keep fan from hitting inside
of heater shell. Bend fan
guard if necessary
3. Replace fan. See Fan,
page 8
4. Replace motor. See Motor,
page 7
1. Repeat installation and
operation instructions. See
Installation and Operation,
page 5
2. A) Check ignitor wire. Tight-
en or reattach loose ignitor
wire. See Figure 11, page
8 for ignitor wire location
B) Set gap between ignitor
electrode and target plate
to 0.17" (0.43 cm)
C) Tighten nut holding piezo
ignitor to base of heater
D) Replace ignitor elec-
trode. See Ignitor, page 8
1. This can happen when run-
ning heater in temperatures
above 85° F (29.44° C). Run
heater in cooler tempera-
tures
2 Check heater inlet and out-
let. Remove any obstruc-
tions
3. Replace fan. See Fan,
page 8
4. Clean heater. See Mainte-
nance, page 7
OBSERVED FAULT
Fan does not turn when heater
is plugged in
Heater will not ignite
Heater shuts down while
running
POSSIBLE CAUSE
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 instal-
lation or operation instruc-
tions properly
2. No spark at ignitor. To test
for spark, follow step 8 un-
der Ignitor, page 9. If you
see spark at ignitor, have
heater serviced by qualied
service person. If no spark
seen:
A) Loose or disconnected
ignitor wire
B) Wrong spark gap
C) Piezo ignitor loose
D) Bad ignitor electrode
1. High surrounding air tem-
perature causing thermal
limit device to shut down
heater
2. Restricted air flow
3. Damaged fan
4. Excessive dust or debris in
surrounding area
WARNING:Use onlyin areas
free of high dust content.
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