Desa 30LP Electric Heater User Manual
Contents
1. PROPANE CONSTRUCTION HEATER OWNER S MANUAL BLP30 RLP30 and REM3OLP 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 A GENERAL HAZARD WARNING FAILURE TO COMPLY WITH THE PRECAU TIONS AND INSTRUCTIONS 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 INSTRUCTIONS SHOULD USE OR SERVICE THIS HEATER IF YOU NEED ASSISTANCE OR HEATER INFORMATION SUCH AS AN INSTRUC TIONS MANUAL LABELS ETC CONTACT THE MANUFACTURER 30 000 BTU Hr 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 A WARNING NOT FOR HOME OR RECREATIONAL VEHICLE USE The heater is designed for use as aconstruction heater in accordance with ANSI Z83 7 CGA2 14 Other sta2. a horizontal position see Figure 6 This places the regulator vent in the proper position to protect it from the weather 3 Connect hose to valve inlet see Figure 7 Tighten firmly using a wrench IMPORTANT Use extra hose or pip ing if needed Install extra hose or pip ing between hose regulator assembly and propane tank You must use the regulator supplied with heater 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 You may hear a click from the excess flow check valve closing If this happens reset the excess flow check valve by closing pro pane 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 Regulator Propane Supply Valve Propane Tank Figure 7 Hose and Inlet Connector 104163 VENTILATION A WARNING Provide at least a one square foot opening of fresh outside air while running heater If proper fresh outside air venti lation is not provided carbon monoxide poisoning can occur Provide proper fresh outside air ventilation before running heater 104163 OWNER S MANUAL OPERATION AX WARNING Review and un derstand the warnings in the Safety Information section page 2 They are needed to safely op erate this
3. codes In the absence of local ordinances and codes refer to the Standard for Storage and Handling of Liq uefied Petroleum Gas ANSI NFPA 56 and the Propane Gas Installation Code CAN CGA B149 2 This instructs on the safe stor age and handling of propane gases Use only the electrical voltage and fre quency specified on model plate The elec trical connections and grounding of the heater shall follow the National Electric Code ANSI NFPA 70 or the Canadian Electrical 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 Approved by the New York City Fire De partment under Certificate of Approval 4953 To be used only at construction site with applicable New York City Codes Regu lations Rules Directives Permits etc This product has been approved for use in the Commonwealth of Massachusetts This heater produces carbon monoxide which is listed by the State of California as a reproductive toxin under Proposition 65 Use only a three prong grounded exten sion cord Useonly the hose and factory preset regu lator provided with the heater Useonly propane gas set up for vapor with drawal Provide adequate ventilation Before using heater provide at least a one square foot opening of fresh outsi
4. set screw firmly 40 50 inch pounds 11 Place motor and fan guard into rear of heater shell Make sure power cord is properly located see Figure 12 12 Insertthree screws through heater shell and into fan guard Tighten screws and Figure 12 Replacing Motor and Fan Guard into Heater rmly 8 104163 SERVICE PROCEDURES Continued FAN 1 Sa 5b Remove three screws that attach fan guard to heater shell Remove motor and fan guard from heater shell see Figure 13 Use hex wrench to loosen set screw that holds fan to motor shaft see Figure 14 Remove fan Be careful not to damage the fan blade pitch If replacing fan remove old fan and discard Go to step 7 below If cleaning fan use soft cloth moistened with kerosene or solvent Dry fan thoroughly Place fan onto motor shaft Make sure set screw contacts flat surface on mo tor shaft Tighten set screw firmly 40 50 inch pounds Place motor and fan guard into rear of heater shell Make sure power cord is properly located see Figure 15 Insert three screws through heater shell and into fan guard Tighten screws firmly 104163 OWNER S MANUAL Figure 13 Removing Motor and Fan Guard from Heater Setscrew Figure 14 Setscrew Location Figure 15 Replacing Motor and Fan Guard into Heater Continued 30 000 BTU Hr PROPANE CONSTRUCTION HEATER SERVICE PROCEDURES Continued IGNITOR 1 Remove motor an
5. TY 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 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 Warranty gives you specific legal rights and you may also have other rights which vary from state to state This warranty does not cover discoloration due to operation of heater 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 Complete the following
6. alve 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 con trol 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 Piezo Ignitor Button REY Automatic Control Valve Button Figure 8 Automatic Control Valve Button and Piezo Ignitor Button NOTICE lf heater is unplugged or power outage occurs while heater is running the thermal limit de vice will stop fuel flow A few sec onds occur before the thermal limit device activates During this short time flames may appear outside the heater This is normal The flames 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 five minutes after stopping heater 2 Repeat steps under To Start Heater 30 000 BTU Hr PROPANE CONSTRUCTION HEATER STORAGE A CAUTION Disconnect heater from propane supply tank s 1 Store propane tank s in safe manner See Chapter 5 of Standard for Storage and Handling of Liquefied Petroleum Gases ANSI NFPA 58 Follow all lo cal codes Always store propane tanks outdoors 2 Place plastic cover caps o
7. d fan guard from heater see Motor page 8 steps 1 and 2 2 Remove black ignitor wire from piezo ignitor Access ignitor wire through un derside of heater base see Figure 16 Push wire up through notch in filler panel Piezo lgnitor Underside of 3 Remove ignitor mounting screw from Heater rear head using nut driver or standard Ignitor Wire screwdriver see Figure 17 4 Remove ignitor from rear head Figure 16 Removing Ignitor Wire from Piezo Ignitor 5 Install new ignitor Attach ignitor to rear head with ignitor mounting screw 6 Run ignitor wire from new ignitor through notch in filler panel Attach ig nitor wire to piezo ignitor 7 Set gap between ignitor electrode and target plate to 17 see Figure 18 Mounting Screw 8 Test for spark Ignitor A WARNING Make sure heater is disconnected from propane supply Heater could ignite caus ing severe burns Push piezo ignitor button and watch for spark between ignitor electrode and target plate 9 Place motor and fan guard into rear of Ignitor Electrode heater shell see Motor page 8 steps 9 and 10 Figure 18 Clearance between Ignitor Electrode and Target Plate 10 104163 ACCESSORIES Purchase accessories and parts from your nearest dealer or service center If they can not supply an accessory or part either con tact your nearest Parts Central listed in the separate Authorized Service Center book let or co
8. de air e For indoor use only Do not use heater out doors Donotuse heater in occupied dwellings or in living or sleeping quarters 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 possible level Keep appliance area clear and free from combustible materials gasoline paint thin ner and other flammable vapors and liq uids Do not use heater in areas with high dust content Dust is combustible Minimum heater clearances from combus tibles Outlet 6 Ft Sides 2 Ft Top 6 Ft Rear 2 Ft Keep heater at least six feet from propane tank s Do not point heater at propane tank s within 20 feet Keep propane tank s below 100 F Check heater for damage before each use Do not use a damaged heater Check hose before each use of heater If highly worn or cut replace with hose speci fied by manufacturer before using heater Locate heater on stable and level surface if heater is hot or operating Not intended for use on finished floors Never block air inlet rear or air outlet front of heater Keep heater away from strong drafts wa ter spray rain or dripping water Do not leave heater unattended Keep children and animals away from heater 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 To prevent injury wear
9. er where you bought heater Clean Heated Air Out F Front LA v lt a a lt q mas Dan Cool Air In Back Ah Combustion Chamber lt i mm Hose Regulator Assembly Gx Air For Combustion Figure 2 Cross Section Operational View lt n Air For Heating 30 000 BTU Hr PROPANE CONSTRUCTION HEATER ASSEMBLY 1 Remove screw from top of fan guard Discard screw 2 Insert nut clip provided with handle with flat side facing up through slot in top of shell Align holes in nut clip with screw hole behind slot in top of shell see Figure 4 3 Place handle over hole and clip In sert two screws provided with handle through handle and tighten into shell Make sure rear screw goes through shell and into fan guard Tighten screws firmly Remove Screw Figure 3 Removing Screw from Top of Fan Guard Flat Side Facing Up Figure 4 Installing Nut Clip gt Screws i Handl Nut Cip dd ps Rear of Heater Figure 5 Attaching Handle 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 or CAN CGA B149 2 Your local library or fire department will have this booklet The amount of pr
10. gloves when han dling heater Never attach duct work to front or rear of heater Do not alter heater Keep heater in its origi nal state Do not use heater if altered Turn off propane supply and unplug heater when not in use 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 104163 PRODUCT IDENTIFICATION Hot Air Outlet Front Piezo ignitor y Button Automatic Control Valve Button Figure 1 30 000 BTU Hr Model FUNDAMENTALS OF OPERATION The Fuel System The hose regulator assembly attaches to the propane gas sup ply 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 Automatic Control System This system causes the heater to shut down if the flame goes out 104163 OWNER S MANUAL UNPACKING 1 Outer Shell Handle Motor Power Cord Hose Regulator Assembly Remove all packing items applied to heater for shipment Keep plastic cover caps attached to inlet connector and hose regulator assembly for storage Remove all items from carton Check all items for shipping damage If heater is damaged promptly inform deal
11. 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 sion cord must be at least six feet long Extension cord must be UL listed Extension Cord Wire Size Requirements Up to 50 ft long use 18 AWG rated cord 5 to 100 ft long use 16 AWG rated cord 101 to 200 ft 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 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 You may hear a click from the excess flow check valve closing If this happens reset the excess flow check valve by closing pro pane supply valve and open again slowly WARNING Be sure motor and fan are running before pushing in automatic control valve but ton Flames could flash outside heater if motor and fan are not running 6 Push in and hold automatic control valve button see Figure 8 Push piezo ignitor button see Figure 8 Keep pushing ignitor button until the burner lights When burner lights keep auto matic control v
12. information for future reference DESA INTERNATIONAL 2701 Industrial Drive P O Box 90004 Bowling Green KY 42102 9004 www desatech com 104163 01 NOT A UPC For information write DESA International P O Box 90004 104163 01 Bowling Green Kentucky 42102 9004 ATTN Customer Service Department Rev F When writing always include model number and serial number 03 00
13. nal parts if needed to clean inside of heater see Service Procedures page 8 6 Clean fan blades each season or as needed see Fan page 9 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 Manifold Pressure Hot Air Output CFM Approx Motor Electric Input Amperage Ignition Weight Pounds Heater Shipping Size Lx W x H Inches Heater Temperature Range for Heater Operation 30 000 Propane Vapor Only 33 1 4 20 psi Tank Pressure or 200 psi 10 PSI 10 1 PSI 175 3045 RPM 120 volt 60 hertz 6 Manual Piezo 9 9 5 18 5 x 7 7 x 12 8 20 F to 85 F When running heater in temperatures above 85 F high internal temperatures may cause thermal limit device to shut down heater 104163 TROUBLESHOOTING Note For additional help visit DESA International s Technical Service web site at www desatech com OWNER S MANUAL shock can occur AR WARNING Never service heater while itis plugged in connected to propane supply operating or hot Severe burns and electrical OBSERVED FAULT POSSIBLE CAUSE REMEDY Fan does not turn when heater is pluggedin 1 No electrical power to heater 1 Check voltage to electrical outlet If volt age is good check heater power cord for breaks 2 Fan hitting inside of heate
14. nce page 6 A WARNING Use only in areas free of high dust content www desatech com 7 30 000 BTU Hr PROPANE CONSTRUCTION HEATER SERVICE PROCEDURES You can also visit DESA International s Technical Service web site at www desatech com AX WARNING Never service heater while itis plugged in con nected to propane supply oper ating or hot Severe burns and electrical shock can occur ELECTRICAL SYSTEM The entire electrical system for this heateris contained within the motor Ifany partof the electrical system is damaged you must re place motor MOTOR 1 Remove three screws that attach fan guard to heater shell 2 Remove motor and fan guard from heater shell see Figure 9 3 Use hex wrench to loosen set screw which holds fan to motor shaft see Fig ure 10 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 11 Figure 11 Removing or Attaching Fan 5 Disconnect the green power cord wire Guard fromMotor from motor and remove black and white wire terminals 6 Discard old motor 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 mo tor Make sure set screw contacts flat surface on motor shaft Tighten
15. ndards govern the use of fuel gases and heating products for specific uses Your local authority can advise you about these The primary purpose of construc tion heaters is to provide temporary heating of buildings under construction alteration or re pair 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 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 monoxide than others 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 Check for proper ven tilation 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 Install and use heater with care Follow all local ordinances and
16. ntact DESA International for refer ral information DESA International P O Box 90004 Bowling Green KY 42102 9004 1 800 972 7879 Parts Department LPA1020 10 Rubber Hose with Brass Fitting U L listed LPA2170 Propane Gas Regulator ULL listed LPA3120 Hose Regulator Assem bly U L listed LPA4020 Fuel Gas Connector Connects regulator to all standard propane tanks U L and A G A listed 104163 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 product If they can t supply original replacement part s either contact your nearest Parts Central or call DESA International s Technical Service Department 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 Parts Not Under Warranty Contact authorized dealers of this product If they can t supply original replacement part s either contact your nearest Parts Central listed in Authorized Service Cen ter booklet or call DESA International s Parts Department at 1 800 972 7879 for referral informa
17. opane 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 This heater is designed to operate with a minimum 20 pound propane tank You may need two or more tanks or one larger tank in colder weather Use a 100 pound tank for longer operation or in very cold weather Less gas is vaporized at lower temperatures 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 29 C No Of Tanks 100 pound Average Temp F At Tank Location 40 32 20 10 0 10 20 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 NN RRR Re Ay WARNING Test all gas pip ing 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 1 Provide propane supply system see Propane Supply 2 Connect POL fitting on hose regulator assembly to propane tank s Turn POL fitting counterclockwise into threads on tank Tighten firmly using wrench IMPORTANT Position regulator so that hose leaving the regulator is in
18. r shell 2 Adjust motor fan guard to keep fan from hitting inside of heater shell Bend fan guard if necessary 3 Fan blades bent 3 Replace fan See Fan page 9 4 Defective motor 4 Replace motor See Motor page 8 Heater will not ignite User did not follow installation or op eration instructions properly No spark at ignitor To test for spark fol low step 8 under gnitor page 10 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 Repeat installation and operation in structions See Installation page 4 and Operation page 5 A Check ignitor wire Tighten or reat tach loose ignitor wire See Figure 14 page 10 for ignitor wire location B Set gap between ignitor electrode and target plate to 17 C Tighten nut holding piezo ignitor to base of heater D Replace ignitor electrode See Ignitor page 10 Heater shuts down while running 104163 UJ High surrounding air temperature caus ing thermal limit device to shut down heater Restricted air flow Damaged fan Excessive dustor debris in surrounding area This can happen when running heater in temperatures above 85 F Run heater in cooler temperatures Check heater inlet and outlet Remove any obstructions Replace fan See Fan page 9 Clean heater See Maintena
19. tion When calling DESA International have ready model number of your heater the replacement part number TECHNICAL SERVICE You may have further questions about this heater If so contact DESA International s Technical Service Department at 1 800 323 5190 You can also visit DESA International s Technical Service web site at www desatech com 30 000 BTU Hr PROPANE CONSTRUCTION HEATER ILLUSTRATED PARTS BREAKDOWN BLP30 RLP30 REM30LP 12 104163 PARTS LIST BLP30 RLP30 REM30LP 104163 OWNER S MANUAL This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 11 of this manual 104154 01 104152 01 104152 02 104152 03 M11143 1 M11084 27 099237 01 103894 01 104162 01 M11084 38 101478 02 104156 01 103863 01 097384 02 101480 12 104786 01 101732 05 103895 01 098219 17 104146 01 104144 01 102445 01 104153 01 M12461 14 097647 09 097941 26 099596 15 104161 01 104160 01 LPA3120 LPA1020 LPA2170 LPA4020 DESCRIPTION Combustion Chamber Unichassis BLP30 Unichassis RLP30 Unichassis REM30LP Bushing Strain Relief Screw Thermocouple Nut Target Bracket Kit Electrode lgnitor Hex Tap Screw 8 18 x 3 8 Fan Motor Assembly Fan Guard Captive Washer Nut Wire Assembly Handle Assembly Thermal Switch Kit Rear Head Kit Cord Power Supply Thermocouple Valve Orifice B
20. urner Tube Assembly Piezo Ignitor Kit Filler Panel Hex Screw 8 32 x 3 8 Tradename Decal BLP30 Tradename Decal RLP30 Tradename Decal REMSOLP General Information Decal Operation Decal Regulator amp Hose Assembly 10 Hose Regulator POL Connector hb ado dl dl dd da py dl dl dl dl dd da YO A A ld dd PARTS AVAILABLE NOT SHOWN ACCESSORIES 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 WARRAN
21. ver brass fittings on inlet connector and hose regulator assembly 3 Store in dry clean and safe place Do not store hose regulator assembly in side heater combustion chamber 4 When taking heater out of storage al ways check inside of heater Insects and small animals may place foreign ob jects in heater Remove motor and other internal parts if needed to remove for eign objects see Service Procedures page 8 MAINTENANCE A WARNINGS Never service heater while it is plugged in connected to pro pane supply operating or hot Severe burns and electrical shock can occur Keep heater clear and free from combustible materials gaso line and other flammable va pors and liquids Do not block the flow of com bustion or ventilation air 1 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 Use house hold cleaners on difficult 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 be fore each use If hose is highly worn or cut replace with hose specified by manufacturer 4 Have heater inspected yearly by a quali fied service agency 5 Keep inside of heater free from com bustible and foreign objects Remove motor and other inter
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