Desa B50H User manual

PORTABLE
FORCED
AIR HEATER
OWNER’SMANUAL
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.
ARL LOGO G 004
®
Models: B50H and REM50C
Heater Size: 50,000 Btu/Hr

2
102553
Safety Information.........................................................................2
Product Identification .................................................................... 4
Unpacking .....................................................................................4
Theory of Operation ......................................................................4
Fuels ..............................................................................................5
Ventilation .....................................................................................5
Operation .......................................................................................5
Storing, Transporting, or Shipping ................................................6
Preventative Maintenance Schedule ............................................. 6
Troubleshooting.............................................................................7
Service Procedures ........................................................................ 8
Upper Shell Removal..............................................................8
Fan........................................................................................... 8
Air Output, Air Intake, and Lint Filters..................................8
Pump Pressure Adjustment..................................................... 9
Fuel Filter................................................................................ 9
Nozzle .....................................................................................10
Pump Rotor ............................................................................. 10
Specifications................................................................................. 11
Wiring Diagram............................................................................. 11
Technical Service .......................................................................... 12
Replacement Parts ......................................................................... 12
Accessories ....................................................................................13
Illustrated Parts Breakdown and Parts List....................................14
Warranty and Repair Service ........................................................Back Cover
CONTENTS SECTION PAGE
IMPORTANT: Read this Owner’s Manual carefully and completely
before trying to assemble, operate, or service this heater. Improper
use of this heater can cause serious injury or death from burns, fire,
explosion, electrical shock, and 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, persons with heart or lung disease or anemia,
those under the influence of alcohol, and those at high altitudes.
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.
WARNINGS
SAFETY
INFORMATION
DANGER
Carbon monoxide poisoning may lead to death!

3
102553
SAFETY
INFORMATION
Continued
WARNINGS (Continued)
• Use only kerosene or No. 1 fuel oil to avoid risk of fire or explosion. Never use
gasoline, naphtha, paint thinners, alcohol, or other highly flammable fuels.
• Fueling
a) Personnel involved with fueling shall be qualified and thoroughly familiar with
the manufacturer’s instructions and applicable federal, state, and local regula-
tions regarding the safe fueling of heating units.
b) Only the type of fuel specified on the heater’s data plate shall be used.
c) All flame, including the pilot light, if any, shall be extinguished and the heater
allowed to cool, prior to fueling.
d) During fueling, all fuel lines and fuel-line connections shall be inspected for leaks.
Any leaks shall be repaired prior to returning the heater to service.
e) At no time shall more than one day’s supply of heater fuel be stored inside a
building in the vicinity of the heater. Bulk fuel storage shall be outside the struc-
ture.
f) All fuel storage shall be located a minimum of 25 feet from heaters, torches,
welding equipment, and similar sources of ignition (exception: the fuel reservoir
integral with the heater unit).
g) Whenever possible, fuel storage shall be confined to areas where floor penetra-
tions do not permit fuel to drip onto or be ignited by a fire at lower elevation.
h) Fuel storage shall be in accordance with the federal, state, or local authority hav-
ing jurisdiction.
• Never use heater where gasoline, paint thinner, or other highly flammable vapors are
present.
• Follow all local ordinances and codes when using heater.
• Heaters used in the vicinity of tarpaulins, canvas, or similar enclosure materials
shall be located a safe distance from such materials. The recommended mini-
mum safe distance is 10 feet. It is further recommended that these enclosure
materials be of a fire retardant nature. These enclosure materials shall be se-
curely fastened to prevent them from igniting or from upsetting the heater due to
wind action.
• Use only in well-vented areas. Before using heater, provide at least a three-square-
foot opening of fresh, outside air for each 100,000 Btu/Hr of rating. This heater
producescarbonmonoxide,whichislistedbytheStateofCaliforniaasareproductive
toxin under Proposition 65.
• Use only in places free of flammable vapors or high dust content.
• Use only the electrical voltage and frequency specified on model plate.
• Use only a three-prong, grounded extension cord.
• Minimum heater clearances from combustibles:
Outlet: 8 Ft. Sides: 4 Ft. Top: 4 Ft. Rear: 4 Ft.
• Locate heater on a stable and level surface if heater is hot or running or a fire may
occur.
• When moving or storing heater, keep heater in a level position or fuel spillage may
occur.
• Keep children and animals away from heater.
• Unplug heater when not in use.
• When used with thermostat, heater may start anytime.
• Never use heater in living or sleeping areas.
• Never block air inlet (rear) or air outlet (front) of heater.
• Never move, handle, refuel, or service a hot, operating, or plugged-in heater.
• Never attach duct work to front or rear of heater.

4
102553
PRODUCT
IDENTIFICATION
Figure 2 - Cross Section Operational View
Fuel
Filter Air Line
To Burner
Air
Output
Filter
Air Pump
Air Intake
Filter
Cool
Air
In
Fan
Combustion Chamber
Ignitor Motor
Clean
Heated
Air Out
Ignition Control
Assembly
Figure 1 - 50,000 Btu/Hr Model
Handle
Fuel Cap
Lower Shell
Power Cord
Fuel Tank
Hot Air Outlet
Air Filter
End Cover
Fan Guard
Upper Shell
Air For Fuel
System Air For Combustion
And Heating Fuel
Side Cover
Ignition Control Assembly
(assembly on inside of
side cover)
Nozzle
THEORY OF
OPERATION The Fuel System: The air pump forces air through the air line. The air is then
pushed through the nozzle. This air causes fuel to lift from the tank. A fine mist of
fuel is sprayed into the combustion chamber.
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 ignition control assembly provides power to the
ignitor. This ignites the fuel/air mixture in the combustion chamber.
The Flame-Out Control System: This system causes the heater to shut down
if the flame goes out.
1. Remove all packing items applied to heater for shipment.
2. Remove all items from carton.
3. Check items for shipping damage. If heater is damaged, promptly inform dealer
where you bought heater.
UNPACKING
Fuel
Tank

5
102553
WARNING
FUELS
Use only kerosene or No. 1 fuel oil to avoid risk of fire or
explosion. Never use gasoline, naphtha, paint thinners,
alcohol, or other highly flammable fuels.
Do not use heavy fuels such as No. 2 fuel oil or No. 2 Diesel. Using heavy fuels
will result in:
• clogged fuel filter and nozzle
• the need of non-toxic anti-icer in fuel during very cold weather
IMPORTANT: Use a KEROSENE ONLY storage container. Be sure storage
container is clean. Foreign matter such as rust, dirt, or water will cause the ignition
control assembly to shut down the heater. Foreign matter may also require you to
clean fuel system often.
WARNING
VENTILATION
Follow the minimum fresh, outside air ventilation
requirements. If proper fresh, outside air ventilation is not
provided, carbon monoxide poisoning can occur. Provide
proper fresh, outside air ventilation before running heater.
Provide at least a two-square-foot opening of fresh, outside air for each 50,000
Btu/Hr rating. Provide extra fresh air if more heaters are being used.
Example: A 50,000 Btu/Hr heater requires one of the following:
• a 16 foot two-car garage door raised two inches
• a 9 foot single-car garage door raised three inches
• two, thirty-inch windows raised five inches
Review and understand the warnings in the Safety Informa-
tion Section, pages 2 and 3. They are needed to safely
operate this heater. Follow all local codes when using this
heater.
WARNING
To Start Heater
1. Follow all ventilation and safety information.
2. Fill fuel tank with kerosene or No. 1 fuel oil.
3. Attach fuel cap.
4. Plug power cord of heater into three-prong, grounded extension cord. Exten-
sion cord must be at least six feet long.
Extension Cord Wire Size Requirements
6 to 10 feet long, use 18 AWG rated cord
11 to 100 feet long, use 16 AWG rated cord
101 to 200 feet long, use 14 AWG rated cord
5. Plug extension cord into standard 120 volt/60 hertz, three-hole, grounded
outlet. Note: Ignitor will preheat for five seconds then heater will start.
OPERATION
To Stop Heater
1. Unplug extension cord from outlet.
To Restart Heater
1. Wait ten seconds after stopping heater.
2. Repeat steps under To Start Heater (see above).

6
102553
Item How Often How To
Fuel tank Flush every 150-200 hours See Storing, Transporting, or
of operation or as needed. Shipping, above.
Air output and Replace every 500 hours of See Air Output, Air Intake,
lint filters operation or once a year. and Lint Filters, page 8.
Air intake Wash and dry with soap and See Air Output, Air Intake,
filter water every 500 hours of op- and Lint Filters, page 8.
eration or replace as needed.
Fuel filter Clean twice a heating season See Fuel Filter, page 9.
or replace as needed.
Ignitor No maintenance required.
Fan blades Clean each season or as needed. See Fan, page 8.
Motor Not required/permanently lubricated
PREVENTATIVE
MAINTENANCE
SCHEDULE Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
WARNING
STORING,
TRANSPORTING ,
OR SHIPPING
Note: If shipping, transport companies require fuel tanks to be empty.
1. Drain fuel tank. Drain fuel through fuel cap opening. Be sure all fuel is re-
moved.
2. If any debris is noted in old fuel, add 1 or 2 quarts of clean kerosene to tank,
stir, and drain again. This will prevent excess debris from clogging filters
during future use.
3. Replace fuel cap. Properly dispose of old and dirty fuel. Check with local
automotive service stations that recycle oil.
4. If storing, store heater in dry place. Make sure storage place is free of dust and
corrosive fumes.
IMPORTANT: Do not store kerosene over summer months for use during next
heating season. Using old fuel could damage heater.

7
102553
TROUBLE-
SHOOTING WARNING
Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
FAULT CONDITION POSSIBLE CAUSE REMEDY
Check circuit breaker in
electrical panel.
Check all electrical connec-
tions. See Wiring Diagram,
page 11.
If fan does not turn freely, see
Pump Rotor, page 10.
Replace ignition control
assembly.
Replace motor.
No power to heater
Bad electrical connection
between motor and ignition
control assembly or ignition
assembly and power cord
Binding pump rotor
Defective ignition control
assembly
Defective motor
Motor does not start
five seconds after
heater is plugged in.
Motor starts and runs
but heater does not
ignite.
No fuel in tank
Pump pressure incorrect
Dirty fuel filter
Obstruction in nozzle
Water in fuel tank
Bad electrical connection
between ignitor and ignition
control assembly
Defective ignitor
Defective ignition control
assembly
Fill tank with kerosene.
See Pump Pressure Adjust-
ment, pages 9.
See Fuel Filter, page 9.
See Nozzle, page 10.
Drain and flush fuel tank with
clean kerosene. See Storing,
Transporting, or Shipping,
page 6.
Check electrical connections.
See Wiring Diagram, page 11.
Replace ignitor.
Replace ignition control
assembly.
WARNING: High voltage!
Pump pressure incorrect
Dirty air intake, air output,
and/or lint filter
Dirty fuel filter
Obstruction in nozzle
Photocell assembly not
properly installed (not
seeing the flame)
Dirty photocell lens
Bad electrical connection
between photocell and
ignition control assembly
Defective photocell
Defective ignition control
assembly
See Pump Pressure Adjust-
ment, page 9.
See Air Output, Air Intake,
and Lint Filters, page 8.
See Fuel Filter, page 9.
See Nozzle, page 10.
Make sure photocell boot is
properly seated in bracket.
Clean photocell lens.
Check electrical connections.
See Wiring Diagram, page 11.
Replace photocell.
Replace ignition control
assembly.
Heater ignites but
ignition control assembly
shuts heater off after a
short period of time.

8
102553
SERVICE
PROCEDURES WARNING
Upper Shell Removal
1. Remove screws along each side of
heater using 5/16" nut-driver. These
screws attach upper and lower
shells together.
2. Lift upper shell off.
3. Remove fan guard.
Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
!
Fan
Motor
Fan
IMPORTANT: Remove fan from
motor shaft before removing motor
from heater. The weight of the motor
resting on the fan could damage the
fan pitch.
1. Remove upper shell (see above).
2. Use 1/8" allen wrench to loosen
set-screw which holds fan to motor
shaft.
3. Slip fan off motor shaft.
4. Clean fan using soft cloth mois-
tened with kerosene or solvent.
5. Dry fan thoroughly.
6. Replace fan on motor shaft. Place
fan hub flush with end of motor
shaft (see Figure 4).
7. Place setscrew on flat of shaft.
Tighten setscrew firmly (40-50
inch-pounds).
8. Replace fan guard and upper shell.
Air Output, Air Intake, and
Lint Filters
1. Remove upper shell (see above).
2. Remove filter end cover screws
using 5/16" nut-driver.
3. Remove filter end cover.
4. Replace air output and lint filters.
5. Wash or replace air intake filter
(see Preventative Maintenance
Schedule, page 6).
6. Replace filter end cover.
7. Replace fan guard and upper shell.
IMPORTANT: Do not oil filters.
Figure 3 - Upper Shell Removal
Figure 5 - Air Output, Air Intake, and Lint Filters
Flush
Setscrew
Motor
Shaft
Figure 4 - Fan Cross Section
Air Intake Filter
Filter End Cover
Fan Guard
Air Output
Filter
Lint Filter
Upper
Shell
Fan
Guard

9
102553
Pump Pressure
Adjustment
1. Remove pressure gauge plug from
filter end cover.
2. Install accessory pressure gauge
(part number HA1180).
3. Start heater (see Operation, page 5).
Allow motor to reach full speed.
4. Using a flat blade screwdriver, set
the pressure to 3.6 PSI. Turn relief
valve to right to increase the
pressure. Turn relief valve to left to
decrease the pressure.
5. Remove pressure gauge. Replace
pressure gauge plug in filter end
cover.
Figure 6 - Pressure Gauge Plug Removal
Relief
Valve
Pressure
Gauge
Plug
Figure 7 - Adjusting Pump Pressure
Pressure
Gauge
Fuel Filter
1. Remove 4 side cover screws using
5/16" nut-driver.
2. Remove side cover.
3. Pull upper fuel line off fuel filter
neck.
4. Carefully pry bushing and fuel
filter out of fuel tank.
5. Wash fuel filter with clean fuel and
replace in tank.
6. Attach upper fuel line to fuel filter
neck.
7. Replace side cover.
Fuel Filter
Side Cover
Upper Fuel Line
Figure 8 - Fuel Filter Removal

10
102553
Nozzle
1. Remove upper shell (see page 8).
2. Remove fan (see page 8).
3. Remove fuel and air line hoses from
nozzle assembly.
4. Turn nozzle assembly 1/4 turn to left
and pull toward motor to remove.
5. Place plastic hex-body into vise and
lightly tighten.
6. Carefully remove nozzle from the
nozzle adapter using 5/8" socket
wrench.
7. Blow compressed air through face of
nozzle. This will free any dirt in
nozzle area.
8. Inspect nozzle seal for damage.
9. Replace nozzle into nozzle adapter
until nozzle seats. Tighten 1/3 turn
more using 5/8" socket wrench (40-
45 inch-pounds).
10.Attach nozzle assembly to burner
strap.
11.Attach fuel and airline hoses to
nozzle assembly.
12.Replace fan (see page 8).
13.Replace fan guard and upper shell.
Continued
Pump Rotor
(Procedure if rotor is binding)
1. Remove upper shell (see page 8).
2. Remove filter end cover screws
using 5/16" nut-driver.
3. Remove filter end cover and air
filters.
4. Remove pump plate screws using
5/16" nut-driver.
5. Remove pump plate.
6. Remove rotor, insert, and blades.
7. Check for debris in pump. If debris
is found, blow out with compressed
air.
8. Install insert and rotor.
9. Check gap on rotor. Adjust to
.003"/.004" if needed (see Figure 13).
Note: Rotate rotor one full turn to
insure the gap is .003"/.004" at tightest
position. Adjust if needed.
Fuel Line Hose
Nozzle
Assembly
Burner
Strap
Combustion
Chamber
Air Line Hose
Nozzle
Assembly
Nozzle
Face
Nozzle
Nozzle
Adapter
Air Line
Fitting
Fuel Line
Fitting
Figure 12 - Rotor Location
50 ROTOR PFA/P 056
Insert Rotor
Air Output
Filter
Blade Pump
Plate Air Intake
Filter
Filter End
Cover
Fan Guard
Figure 11 - Nozzle and Nozzle Adapter
Figure 9 - Removing Air and Fuel Line
Hoses Figure 10 - Removing Nozzle Assembly
Nozzle
Seal

11
102553
(Pump Rotor, continued)
10.Install blades, pump plate, air filters,
and filter end cover.
11.Replace fan guard and upper shell.
12.Adjust pump pressure (see page 9).
Note: If rotor is still binding, proceed as
follows.
13.Performsteps1through6(seepage10).
14.Place fine grade sandpaper (600 grit)
on flat surface. Sand rotor lightly in
“figure 8”motion four times (see Fig-
ure 14).
15.Reinstall insert and rotor.
16.Perform steps 10 through 12 above.
Sandpaper
Figure 14 - Sanding Rotor
.003"/.004" Gap
Measured With
Feeler Gauge
Blade Rotor
Gap Adjusting Screw
Gap Adjusting Screw
Figure 13 - Gap Adjusting Screw Locations
SPECIFICATIONS Output Rating (Btu/Hr.) 50,000
Fuel Use Only Kerosene or No. 1 Fuel Oil
Fuel Tank Capacity (U.S. Gal.) 4.0
Fuel Consumption (Gal. Per Hr.) .40
Electric Requirements 120 V/60 Hz
Amperage (Normal Run) 2.0
Motor RPM 1725
Hot Air Output (CFM) 175
Pump Pressure (psi) 3.6
Shipping Weight (Approximate Pounds 35
Heater Weight without Fuel
(Approximate Pounds) 30
Figure 16 - Wiring Diagram
WIRING
DIAGRAM
Blue
Photocell
Power Plug
120V/60Hz
Ignitor
Ignitor
Blue
White
Red
Gray
Gray
Green
Motor
White
Black
AC Common (L2)
Photocell
Photocell Common
Motor Common
Motor
AC Hot (L1)
Ignitor Common
Ignition Control
Green

12
102553
You may have further questions about operation or troubleshooting. If so, contact
DESA International’s Technical Service Dept. at 1-800-323-5190.
TECHNICAL
SERVICE
Note: Use only original replacement parts. This will protect your warranty cover-
age for parts replaced under warranty.
Parts Under Warranty
Contact authorized dealers of this product. If they can’t supply original replacement
part(s), call DESA International’s Technical Service Dept. 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
Usually, 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), call DESA International’s Parts Dept. 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

13
102553
ACCESSORIES
Purchase accessories and parts
from your nearest dealer or
service center. If they can not
supply these accessories or parts,
either contact your nearest Parts
Central or DESA International
for referral information. Parts
Centrals are listed in the Autho-
rized Service Center booklet
supplied with heater.
DESA International
P.O. Box 90004
Bowling Green, KY
42102-9004
1-800-972-7879
Parts Department
AIR GAUGE KIT - HA1180
Special tool to check pump
pressure.
THERMOSTAT
KIT - HA1210
Keeps your building at
the temperature you
select day and night.
Helps economize on
fuel.
Makes heater even more
portable and convenient.
Easy to assemble.
STANDARD WHEELS AND
HANDLE KIT - HA1206
HEAVY DUTY
WHEELS AND
HANDLE KIT - HA1202
For heavy duty applica-
tions. Makes your heater
even more portable and
convenient.
A 008
IGNITION CONTROL ASSEMBLY/
PHOTOCELL TESTER - HA1170
Special tool used to test the ignition
control assembly and photocell.

14
102553
ILLUSTRATED
PARTS
BREAKDOWN
Motor and Pump Assembly 12-11
12-18
12-17
12-16
12-15
12-14
12-1312-12
12-10
12-1
12-2
12-3 12-4 12-5 12-6
12-7
12-8
12-9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
9-1
9-2
9-3
9-4
9-5
17
18
19
20
21
22
23
24
25
26
27
28
29
30
34
35
36
32 33
31

15
102553
PARTS LIST
Models B50H
and REM50C
This list contains replaceable parts used in your heater. When ordering parts,
besuretoprovidethecorrectmodelandserialnumbers(fromthemodelplate),
then the part number and description of the desired part.
** Not available as an assembly.
*** See OPTIONAL ACCESSORIES
KEY PART
NO. NUMBER DESCRIPTION QTY.
1 M51104-01 Handle 1
2 098511-54 Upper Shell (B50H) 1
098511-67 Upper Shell (REM50C) 1
3 M11084-29 Screw, #10-16 x 3/4" 2
4 100647-01 Screw, #10-16 x 1/2" 6
5 098512-39 Combustion Chamber 1
6 M10908-2 Screw, #6-32 x 3/8" 2
7 M16660 Photocell Bracket 1
8 M16656-23 Photocell Assembly 1
9 *** Burner Head Assembly 1
9-1 HA3021 Nozzle 1
9-2 102548-01 Ignitor Kit 1
9-3 079980-01 Nozzle Adapter 1
9-4 102336-01 Bracket 1
9-5 M11084-42 Screw, #6-20 x 3/4" 1
10 M11084-26 Screw, #10-16 x 3/8" 2
11 M30884 Fan 1
12 *** Motor and Pump Assembly 1
12-1 102001-01 Motor 1
12-2 100422-02 Pump Body 1
12-3 M22009** Insert 1
12-4 M22456-2** Rotor 1
12-5 M29608 Pump End Cover 1
12-6 M29632** Lint Filter 1
12-7 M29633** Intake Filter 1
12-8 M29609 Filter End Cover 1
12-9 M12461-31 Screw, #10-32 x 1" 3
12-10 M27694** Adjusting Screw 1
12-11 M10993-1** Pressure Relief Spring 1
12-12 M22997** Plug 1
12-13 M8940** Steel Ball, 1/4" diameter 1
12-14 M29612-01** Output Filter 1
12-15 M12461-32 Screw, #10-32 x 1 1/8" 6
12-16 M50016 Elbow, 90°1
12-17 M8643-2** Blade 4
12-18 FHPF3-6C Screw, #10-32 x 3/4" 2
13 M51105-01 Fan Guard 1
14 098219-31 Power Cord 1
15 M11143-1 Strain Relief Bushing 1
16 NTC-4C Hex Lock Nut, 1/4-20 2
17 M11084-26 Screw, #10-16 x 3/8" 4
KEY PART
NO. NUMBER DESCRIPTION QTY.
18 M50631 Rubber Bumper 2
19 097461-03AA Side Cover 1
20 101205-01 Motor Bracket 1
21 M30865-02 Bushing 2
22 M11271-8 Clip Nut 6
23 M50104-02 Bushing 1
24 M11084-26 Screw, #10-16 x 3/8" 6
25 M10908-12 Screw, #8-32 x 3/8" 1
26 098511-12 Lower Shell (B50H) 1
098511-81 Lower Shell (REM50C) 1
27 M29652-04 Rubber Airline 1
28 079973-01 Fuel Line 1
29 M50876-02 Fuel Filter (With Bushing) 1
30 M10990-3 Rubber Bushing 1
31 101695-01 Button Plug 1
32 102349-01 PCB Support 1
33 102350-01 Ignition Control Assembly 1
34 097702-01 Fuel Cap (Includes Gasket) 1
35 098513-27 Fuel Tank (B50H) 1
098513-20 Fuel Tank (REM50C) 1
36 M51108-01 Heat-Shell Shield 1
PARTS AVAILABLE - NOT SHOWN
097646-01 Tradename Decal (B50H)
097764-02 Tradename Decal (REM50C)
101685-09 General Information Decal (B50H)
101685-10 GeneralInformationDecal(REM50C)
M51017-01 Cushion Grommet (B50H)
OPTIONAL ACCESSORIES
HA1210 Hang-up Thermostat
HA1202 Heavy Duty Wheels and Handle Kit
HA1206 Standard Wheels and Handle Kit
HA1180 Air Gauge Kit
HA2210 Fuel Tank Filter Screen
HA3005 Rotor Kit (M22456-2, M22009,
M8643-2)
HA3014 Filter Kit (M29632, M29633,
M29612-01)
HA3020 Pump Kit (M27694, M10993-1,
M22997, M8940)
HA1170 Ignition Control Assembly/Photocell
Tester

WARRANTY AND REPAIR SERVICE
WARRANTY SERVICE
Should your heater require service, return it to your
nearest authorized service center. Proof of purchase must
be presented with the heater. The heater will be inspected.
A defect may be caused by faulty materials or workman-
ship. If so, DESA International will repair or replace the
heater without charge.
REPAIR SERVICE
Return the heater to your nearest authorized service
center. Repairs not covered by the warranty will be billed
at standard prices.
Illustrated parts lists can be obtained free of charge. Send
a self addressed stamped envelope to the address listed
below. List the heater model number and the date located
in the lower right corner of this page. A service manual
may be purchased from the address listed below. Send a
check for $5.00 payable to DESA International.
Whenwritingforinformationregardingyourheater,besure
toinclude the model numberandserialnumber as shownon
the model plate.
Each Service Center is independently owned and operated.
We reserve the right to amend these specifications at any
time without notice.
DESA
INTERNATIONAL
Corporate Headquarters
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
For information, write: DESA International, P.O. Box 90004
Bowling Green, Kentucky 42102-9004 ATTN: Customer Service Department
When writing, always include model number and serial number.
LIMITED WARRANTY
DESA International warrants this product and any
parts thereof, to be free from defects in materials and
workmanship for six (6) months from the date of first
purchasewhenoperatedandmaintainedinaccordance
withinstructions.Thiswarrantyisextendedonlytothe
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
condition. Transportation and incidental costs associ-
ated with warranty repairs are not reimbursable under
this warranty.
Warranty service is available only through authorized
dealers and service centers.
This warranty does not cover defects resulting from
misuse, abuse, negligence, accidents, lack of proper
maintenance, normal wear, alteration, modification,
tampering, contaminated fuels, repair using improper
parts, or repair by anyone other than an authorized
dealer or service center. Routine maintenance is the
responsibility of the owner.
THIS EXPRESS WARRANTY IS GIVEN IN LIEU
OF ANY OTHER WARRANTY EITHER EX-
PRESSED OR IMPLIED, INCLUDING WARRAN-
TIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE.
DESA International assumes no responsibility for in-
direct, incidental or consequential damages. Some
states do not allow the exclusion or limitation of
incidental or consequential damages or limitations or
exclusions may not apply to you. This Limited War-
ranty gives you specific legal rights and you may also
have other rights which vary from state to state.
Model No.
Serial No.
Date of Purchase
(To be filled in by purchaser)
KEEP THIS WARRANTY
102553-01
Rev. B
11/95