Desa BLP375A User's Manual
Contents
1. lt Q Air For Combustion Figure 2 Cross Section Operational View Nozzle Solenoid Valve qmm ir For Heating Hose Regulator Assembly 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 Liquefied Petroleum Gas ANSI NFPA 58 and the Propane Installation Code CAN CGA B149 2 Your local library or fire de partment will have these booklets The amount of propane gas ready for use from propane tanks varies Two factors de cide this amount 1 The amount of propane gas in tank s 2 The temperature of tank s The chart below shows the number of 100 pound tanks needed to run this heater Do not operate this product with any tank smaller than 100 pounds Temperature F At Tank 40 32 20 0 10 20 Number 3 Use larger tank below of tanks 40 F Less gas is vaporized at lower temperatures You may need a larger tank in colder weather Your local propane gas dealer will help you select the proper supply system The mini mum surrounding air temperature rating for each heater is 20 F VENTILATION Ay 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 outsi2. 8 100416 SPECIFICATIONS Output Rating Btu Hr Fuel Fuel Consumption Gallons Hour Pounds Hour Supply Pressure To Regulator Minimum for purposes of input adjustment Maximum Regulator Outlet Pressure Hot Air Output CFM Motor Electric Input Amperage Ignition Weight Pounds Heater Shipping Size L x W x H Inches 225 000 to 375 000 Propane Vapor Only 2 5 Minimum 4 0 Maximum 10 4 Minimum 17 4 Maximum 25 psig Tank Pressure 7 20 psig 1500 1725 RPM 1 5 HP 120 V 60 Hz 4 2 Direct Spark 42 49 34x 13x 19 5 ACCESSORIES Purchase accessories and parts from your nearest dealer or service center If your dealer or service center can not supply an accessory or part either contact your near est Parts Central listed in the separate Au thorized Service Center booklet or call DESA International s Parts Department at 1 800 972 7879 for referral information You can also write to the address listed on the back page of this manual Hose LPA1020 A 10 foot hose for locating heater further away from propane tank s Regulator LPA2020 Hose and Regulator Assembly LPA3030 Fuel Gas Connector LPA4020 A POL adapter with excess flow check valve Thermostat HA1210 100416 TECHNICAL SERVICE You may have further questions about this heater If so contact DESA International s Technical Service Depart ment at 1 800 323 5190 You can also visit DESA International s Technical Service
3. PROPANE CONSTRUCTION HEATERS OWNER S MANUAL Heater Size 375 000 Btu Hr A Series Models BLP375A RLP375A 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 A GENERAL HAZARD WARNING FAILURE TO COMPLY WITH THE PRECAUTIONS AND INSTRUC TIONS PROVIDED WITH THIS HEATER CAN RESULT IN DEATH SERIOUS BODILY INJURY AND PROPERTY LOSS OR DAMAGE FROM HAZARDS OF FIRE EXPLOSION BURN ASPHYXIATION CARBON MONOXIDE POISONING AND OR ELECTRICAL SHOCK ONLY PERSONS WHO CAN UNDERSTAND AND FOLLOW THE IN STRUCTIONS SHOULD USE OR SERVICE THIS HEATER IF YOU NEED ASSISTANCE OR HEATER INFORMATION SUCH AS AN INSTRUCTIONS MANUAL LABELS ETC CONTACT THE MANU FACTURER 375 000 BTU HR A SERIES PROPANE CONSTRUCTION HEATER SAFETY INFORMATION A WARNINGS A WARNING FIRE BURN IN HALATION AND EXPLOSION HAZARD KEEP SOLID COMBUS TIBLES SUCH AS BUILDING MA TERIALS PAPER OR CARD BOARD A SAFE DISTANCE AWAY FROM THE HEATER AS RECOMMENDED BY THE IN STRUCTIONS NEVER USE THE HEATER IN SPACES WHICH DO OR MAY CONTAIN VOLATILE OR AIRBORNE COMBUSTIBLES OR PRODUCTS SUCH AS GASO LINE SOLVENTS PAINT THIN NER DUST PARTICLES OR UN KNOWN CHEMICALS AX WARNING Not for home or recreational vehicle use The heater is designed and approved f
4. down Figure 3 Regulator With Adjustment Knob Pointing Down 100416 OWNER S MANUAL 4 Open propane supply valve on propane tank s slowly Note If not opened slowly excess flow check valve on pro pane tank will stop gas flow If this hap pens you may hear a click inside the regulator assembly To reset the excess flow check valve close propane sup ply valve and open again slowly 5 Adjust regulator between 7 and 20 psig see Figure 5 Note Higher regulator setting will allow heater to produce more heat A WARNING Do notadjust regu latorbelow7 psig orabove 20 psig Heater may not run properly 6 Check all connections for leaks 7 Close propane supply valve Hose Y Inlet Connector Figure 4 Hose and Inlet Connector de Im f IT l il T sa il I TII jl i UW l W Regulator Figure 5 Adjustable Regulator Set At 7 psig OPERATION AX WARNING Review and un derstand the warnings in the Safety Information section page 2 They are needed to safely op erate 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 sur face 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 s
5. H
6. de air ventilation be fore running heater Provide at least three square feet of fresh outside air for each 100 000 Btu Hr of rat ing This heater requires a fresh air opening of at least 11 25 square feet Provide extra fresh air if more heaters are being used 100416 INSTALLATION AX WARNING Review and un derstand the warnings in the Safety Information section page 2 They are needed to safely op erate this heater Follow all local codes when using this heater Ay WARNING Test all gas pip ing and connections for leaks after installing 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 1 Provide propane supply system see Propane Supply page 4 2 Connect POL fitting on hose regulator assembly to propane tank s Turn POL fitting counterclockwise into threads on tank Tighten firmly using a wrench IMPORTANT Tighten regulator with black adjustment knob pointing down Pointing adjustment knob down pro tects regulator from weather damage 3 Connect hose to inlet connector Tighten firmly using a wrench IMPORTANT Extra hose or piping may be used if needed Install extra hose or piping between hose regulator assembly and propane tank You must use the regulator supplied with the heater Supply Valve Propane Tank Regulator Adjustment Knob pointing
7. e design specific parts Do not substitute or use generic parts Improper replacement parts could cause serious or fatal injuries Do not adjust regulator below 7 psig or above 20 psig 100416 OWNER S MANUAL PRODUCT UNPACKING IDENTIFICATION 1 Remove all packing items applied to Hot Air Outlet heater for shipment Keep plastic cover Front caps attached to inlet connector and hose regulator assembly for storage Remove all items from carton 3 Check all items for shipping damage If heater is damaged promptly inform dealer where you bought heater Handle Hose Regulator Assembly Figure 1 375 000 Btu Hr Models 100416 3 375 000 BTU HR A SERIES PROPANE CONSTRUCTION HEATER THEORY OF OPERATION The Fuel System The hose regulator assembly attaches to the propane gas sup ply The propane gas moves through the solenoid 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 Combustion Chamber Clean Heated Air Out Front The Ignition System The direct spark ignitor DSI sends voltage to the ignitor The ignitor ignites the fuel and air mixture The Safety Control System This sys tem causes the heater to shut down if the flame goes out The motor will continue to run but no heat is produced Ignitor Cool Air In Back
8. ell Pull motor and fan from shell Turn motor and fan around Carefully place back in shell Note Fan will go into shell first Line up mounting holes in shell with holes on motor mount Replace four bolts through shell and motor mount Insert bolts from outside of heater Tighten nuts firmly Route motor wires through hole in bot tom of shell see Figure 7 Connect motor wires as follows see Figure 6 white wire to terminal board Note Attach to empty connector on white wire side of terminal board black wire to terminal board Note Attach to empty connector on black wire side of terminal board blue wire to thermal switch wire orange wire to solenoid valve green wire to grounding screw on shell Replace side cover Replace fan guard Fan S Hub Motor Shaft Setscrew Figure 10 Fan Cross Section 375 000 BTU HR A SERIES PROPANE CONSTRUCTION HEATER WIRING DIAGRAMS Solenoid Green Valve Motor gt lt Ignitor Orange x Power Green m Blue Orange White White 6 White Black DSI Black _ Black Control Black A mig On Off Blue CD Blue gt Blue D Blue Terminal Switch Connector Thermal Connector Board Green Switch Figure 11 Wiring Diagram Black Ignitor White Line Ground Neutral Figure 12 Electrical Ladder Diagram
9. fied Petroleum Gas ANSI NFPA 56 and the Propane Instal lation Code CAN CGA B149 2 This in structs on the safe storage and handling of propane gases e Use only the electrical voltage and fre quency specified on model plate The electrical connections and grounding of the heater shall follow the National Electric Code ANSI NFPA 70 or the Canadian Electric Code Part 1 Hlectrical 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 e Approved by the New York City Fire Department under certificate of Ap proval 4953 To be used only at con struction site with applicable New York City codes regulations rules direc tives permits etc e This product has been approved for use in the Commonwealth of Massachusetts e For indoor use only Provide adequate ventilation e Keep heater away from strong drafts wind water spray rain or dripping water e 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 produces carbon monoxide which is listed by the State of California as a reproductive toxin under Proposition 65 e Do not use heater outdoors or in occu pied dwellings Donot use heater in living or sleeping quarters Kee
10. 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 Inspect hose regulator assembly before each use If hose is highly worn or cut replace Have heater inspected yearly by a quali fied service agency Keep inside of heater free from com bustible and foreign objects 100416 SERVICE PROCEDURE AX WARNING Never service heater while it is plugged in con nected to propane supply oper ating or hot Severe burns and electrical shock can occur CLEANING FAN Clean fan every 500 hours of operation or as needed 1 4 Thermal Switch Wire Mounting Bolts Remove screws on side cover using 5 16 nut driver Remove side cover Detach the five motor wires from parts under heater shell Be sure to detach only wires coming from motor The five motor wires are white wire to terminal board black wire to terminal board blue wire to thermal switch wire orange wire to solenoid valve green wire to grounding screw on shell Remove fan guard from rear of heater Grounding Screw Mount Motor Wires Figure 7 Location of Fan and Motor 100416 10 11 OWNER S MANUAL Reach into rear of heater shell Care fully pull motor wires through hole in bottom of shell Note Pull wires through hole one at a time Remove nuts and mounting bolts hold
11. ing motor mount to shell Use 3 8 nut driver and 7 16 wrench Carefully pull motor and fan out of shell IMPORTANT Be careful not to damage fan Do not set motor and fan down with the weight resting on fan This could damage fan pitch Tum motor and fan around Place motor and fan into shell backwards Note Mo tor will go into shell first see Figure 8 Line up rear mounting holes in shell with first hole on each side of motor mount see Figure 8 Note When holes are lined up fan should be out side of shell Holding mounting bolt carefully reach through fan blades into rear of heater Be careful not to damage fan pitch In sert bolt through motor mount and shell With free hand attach nut finger tight Repeat process for other mounting hole Use 1 8 hex wrench to loosen setscrew which holds fan to motor shaft see Fig ure 9 Rear Mounting Hole Figure 8 Fan and Motor Turned Around Setscrew Motor shaft Figure 9 Fan Motor Shaft and Setscrew Location N 13 14 15 16 17 18 19 20 21 22 23 Slip fan off motor shaft Clean fan using soft cloth moistened with kerosene or solvent Dry fan thoroughly Replace fan on motor shaft Make sure setscrew is touching back of flat sur face on motor shaft see Figure 10 Place setscrew on flat of shaft Tighten setscrew firmly 40 50 inch pounds Remove two nuts and bolts securing motor mount to sh
12. ion cord must be at least six feet long Extension cord must be UL listed Extension Cord Size Requirement Up to 50 feet long use 18 AWG rated cord 51 to 100 feet long use 16 AWG rated cord 101 to 200 feet long use 14 AWG rated cord 4 Plug extension cord into a 120 volt 60 hertz three hole grounded outlet 5 Open propane supply valve on propane tank s slowly Note If not opened slowly excess flow check valve on pro pane tank will stop gas flow If this hap pens you may hear a click inside the regulator assembly To reset the excess flow check valve close propane sup ply valve and open again slowly 6 Make sure regulator is set between 7 and 20 psig Note Higher regulator setting will allow heater to produce more heat AR WARNING Do notadjust regu lator below7 psig orabove 20 psig Heater may not run properly 7 Turn on off switch to the ON position Note If heater does not start turn on off switch to the OFF position Wait ten seconds for safety control to reset then try again Continued 375 000 BTU HR A SERIES PROPANE CONSTRUCTION HEATER OPERATION Continued 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 on off switch to the OFF position 4 Unplug heater TO RESTART HEATER If safety control stops gas flow to heater motor will continue to run To restar
13. l Tradename Decal RLP375A Tradename Decal BLP375A Baffle Hose Regulator Fuel Gas Connector Thermostat AE AE A E E E E ao oo ap aa ana WARRANTY AND REPAIR SERVICE KEEP THIS WARRANTY LIMITED WARRANTY DESA International warrants this product and any parts thereof to be free from defects in materials and workmanship for one 1 year from the date of first purchase when operated and maintained in accordance with instructions This warranty is extended only to the 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 associated 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 Expressed Or Implied Including Warranties Of Merchantability And Fitness For A Particular Purpose DESA International assumes no responsibility for indirect incidental or consequen
14. na tional have ready model number of your heater the replacement part number 375 000 BTU HR A SERIES PROPANE CONSTRUCTION HEATER ILLUSTRATED PARTS BREAKDOWN BLP375A RLP375A 100416 OWNER S MANUAL PA RTS LI ST This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 9 of this manual BLP375A RLP375A 100416 PART NUMBER 100409 01 100409 06 097847 01 097849 01 097805 01 097918 01 097917 01 097806 02 097811 01 097802 01 M50104 02 097964 01AA M11143 1 099896 05 097809 01 097828 01 098201 01 100145 01 099679 01 M51605 02 097965 01AA 101732 03 097829 02 098226 01 098827 01 099125 01 097966 09AA 097848 01 100146 01 LPA3030 100407 01 097815 05 097941 09 097895 05 097916 01 LPA1020 LPA2020 LPA4020 HA1210 DESCRIPTION Outer Shell Assembly BLP375A Outer Shell Assembly RLP375A Combustion Chamber Assembly Burner Assembly Ignitor Cleat Handle Ignitor Cable Fan Motor Shorty Bushing Fan Guard Strain Relief Bushing Cord Assembly Male Fitting Solenoid Bracket Solenoid Valve Fuel Tube Nozzle D S I Control Side Cover Thermal Switch Kit Motor Mount On Off Switch Compression Fitting Terminal Board Base Rear Plate Assembly Elbow Fitting PARTS AVAILABLE NOT SHOWN Regulator amp Hose Assembly Electrical Decal General Information Deca
15. or use as a construction heater under ANSI Z83 7 The purpose of construction heaters is to provide temporary heating of buildings un der construction alteration or repair Prop erly used the heater provides safe economi cal 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 fire 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 monox ide than others Early signs of carbon mon oxide poisoning resemble the flu with head aches dizziness and or nausea If you have these signs the heater may not be working properly Get fresh air at once Have heater serviced Propane Gas Propane gas is odorless An odor making agent is added to propane gas Theodorhelps you detecta propane gas leak However the odor added to propane gas can fade Propane gas may be present even though no odor exists Makecertain youread andunderstandall W arn ings Keep this manual for reference It is your guidetosafeand proper operation of this heater Install and use heater with care Follow all local ordinances and codes In the ab sence of local ordinances and codes re fer to the Standard for Storage and Handling of Lique
16. p appliance area clear and free from combustible materials gasoline paint thinner and other flammable vapors and liquids Dust is combustible Do not use heater in areas with high dust content Check heater for damage before each use Do not use a damaged heater Use only propane gas set up for vapor withdrawal Keep propane tank s below 100 F Do not use heater in a basement or be low ground level Propane gas is heavier than air If a leak occurs pro pane gas will sink to the lowest pos sible level Use only the hose and factory regula tor provided with the heater Check hose before each use of heater If highly worn or cut replace with hose specified by manufacturer before using heater Do not alter heater Keep heater in its original state Do not use heater if altered Keep heater at least six feet from pro pane tank s Do not point heater at pro pane tank s within 20 feet Minimum heater clearances from com bustibles Outlet 8 Ft Sides 2 Ft Top 6 Ft Rear 2 Ft Locate heater on stable and level sur face if heater is hot or running Keep children and animals away from heater Turn off propane supply and unplug heater when not in use Never block air inlet rear or air outlet front of heater Never move handle or service a hot operating or plugged in heater Never attach duct work to front or rear of heater Use only original replacement parts This heater must us
17. t heater 1 Turn on off switch to the OFF position 2 Wait ten seconds then turn on off switch to the ON position If heater does not restart Check manual valves if any and sup ply valves on propane tank Make sure they are open Check fuel level in propane tank s If fuel level is too low contact local pro pane gas company If heater still does not restart contact your local service center STORAGE MAINTENANCE A CAUTION Disconnect heater from propane supply tank s 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 Place plastic cover caps over brass fit tings on inlet connector and hose regu lator assembly Store in dry clean and safe place Do not store hose regulator assembly in side heater combustion chamber When taking heater out of storage al ways check inside of heater Insects and small animals may place foreign objects in heater Keep inside of heater free from combustible and foreign objects AX WARNING Never service heater while it is plugged in con nected to propane supply oper ating or hot Severe burns and electrical shock can occur Keep heater clean Clean heater annu ally or as needed to remove dust and debris If heater is dirty or dusty clean heater with a damp cloth Inspect
18. tial 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 Warranty gives you specific legal rights and you may also have other rights which vary from state to state We reserve the right to amend these specifications at any time without notice The only warranty applicable is our standard written warranty We make no other warranty expressed or implied 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 workmanship If so DESA International will repair or replace the heater without charge REPAIR SERVICE Return your heater to your nearest authorized service center Repairs not covered by the warranty will be billed at standard prices Each Service Center is independently owned and operated We reserve the right to amend these specifications at any time without notice Model Serial No Date of Purchase DESA INTERNATIONAL 2701 Industrial Drive P O Box 90004 Bowling Green KY 42102 9004 www desatech com 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 100416 01 100416 01 Rev
19. web site at www desatech com SERVICE PUBLICATIONS You can receive an Illustrated Parts List free of charge Send your request and a self addressed stamped envelope to DESA In ternational address on back page Be sure to include the heater model number You can purchase a service manual for 5 Make check payable to DESA International OWNER S MANUAL REPLACEMENT PARTS A WARNING 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 fa tal injuries This will also protect your warranty coverage for parts replaced under warranty PARTS UNDER WARRANTY Contact authorized dealers of this prod uct If they cannot supply original re placement part s either contact your near est Parts Central or call DESA International s Technical Service Depart ment at 1 800 323 5190 When calling DESA International have ready your name your address model and serial numbers of your heater how heater was malfunctioning purchase date In most cases we will ask you to return the defective part to the factory PARTS NOT UNDER WARRANTY Contact authorized dealers of this product If they cannot supply original replacement part s either contact your nearest Parts Central or call DESA International s Parts Department at 1 800 972 7879 for referral information When calling DESA Inter
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