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13

102016

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 information.

When calling DESA International, have ready

• model number of your heater
• the replacement part number

REPLACEMENT

PARTS

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 Interna-
tional for information. Parts
Centrals are listed in the
Authorized Service Center
booklet supplied with heater.

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

A 008

FLAME-OUT
CONTROL/PHOTOCELL
TESTER - HA1170

For all models. Special tool
used to test the flame-out
control and photocell.

AIR GAUGE
KIT - HA1180

For all models. Special
tool to check pump pres-
sure.

HEAVY DUTY
WHEELS AND
HANDLE KIT - HA1202

For heavy duty applications.
Makes your heater even
more portable and convenient.

STANDARD WHEELS AND
HANDLE KIT - HA1206

Makes heater even more
portable and convenient.
Easy to assemble.

THERMOSTAT
KIT - HA1210

For all models. Keeps
your building at the
temperature you select
day and night. Helps
economize on fuel.

Summary of Contents for ARL B50G

Page 1: ...ER S MANUAL IMPORTANT Read and understand this manual before assembling starting or servic ing heater Improper use of heater can cause serious injury Keep this manual for future reference Heater Models B50G and REM50B ARL LOGO G 004 ...

Page 2: ...y 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...

Page 3: ...r 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 natu...

Page 4: ...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 electronic ignitor sends voltage to the spark plug The spark plug ignites the fuel and air mixture The Flame Out Control System This system ...

Page 5: ...e or explosion Never use gasoline naphtha paint thinners alcohol or other highly flammable fuels 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 three square foot opening of fresh outside a...

Page 6: ...rd 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 Heater will start when extension cord is plugged into outlet If not push in flame out control reset button see Figure 3 Fi...

Page 7: ...s IMPORTANT Do not store kerosene over summer months for use during next heating season Using old fuel could damage heater WARNING PREVENTATIVE MAINTENANCE SCHEDULE Never service heater while it is plugged in operating or hot Severe burns and electrical shock can occur Item How Often How To Fuel tank Flush every 150 200 hours See Storing Transporting or Shipping above of operation or as needed Air...

Page 8: ... but motor runs for a short period of time Wrong pump pressure Carbon deposits on spark plug and or improper gap Dirty fuel filter Dirt in nozzle Water in fuel tank Electronic ignitor not grounded Bad electronic ignitor Motor does not start when heater is plugged in fan rotates slowly or does not turn Flame out control not reset Solid state relay not allowed to reset Binding pump rotor See Pump Pr...

Page 9: ...uard and upper shell IMPORTANT Do not oil filters Upper Shell 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 sol...

Page 10: ... 16 open end wrench 8 Remove burner strap from spark plug 9 Clean and regap spark plug electrodes to 055 gap 10 Replace burner strap onto spark plug Rotate burner strap to position spark plug electrodes see Figure 12 page 11 11 Tighten spark plug with spark plug mounting nut 12 Release hex body of spark plug from vise Fuel Filter 1 Remove side cover screws using 5 16 nut driver 2 Remove side cover...

Page 11: ...move 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 ...

Page 12: ...tor 16 Perform steps 10 through 12 above 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 Air Pump Pressure PSI 3 4 Shipping Weight Approximate Pounds 35 Heater Weight Without Fuel Approximate Pounds 30 SPECIFICATIONS WIRIN...

Page 13: ...lacement part number REPLACEMENT PARTS 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 Interna tional for information Parts Centrals are listed in the Authorized Service Center booklet supplied with heater DESA International P O Box 90004 Bowling Green KY 42102 ...

Page 14: ...OTOR PUMP 30 EAI EBI 12 1 12 2 12 3 12 4 12 5 12 6 12 7 12 8 12 9 12 10 12 11 12 13 12 18 12 17 12 16 12 15 12 14 12 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 9 1 9 2 9 3 9 4 9 5 17 19 21 22 23 24 25 26 27 30 31 32 33 36 37 38 39 28 29 34 35 40 16 18 20 ...

Page 15: ... 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 18 Power Cord 1 15 M11143 1 Strain Relief Bushing 1 16 NTC 4C Hex Lock Nut 1 4 20 2 See OPTIONAL ACCESSORIES Not available as an assembly 17 M11084 26 Screw 10 16 x 3 8 2 18 M50631 Rubber Bumper 2 19 M50899 03AA Side Cover 1 20 101205 01 Motor Bracket 1 21 M30865 02 Bushing 2 22 M11...

Page 16: ...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 tampe...

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