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UNVENTED (VENT-FREE) INFRARED GAS HEATER

SAFETY INFORMATION AND INSTALLATION MANUAL

2 PLAQUE MODELS: 10550, 10551, 10552 AND 10553
3 PLAQUE MODELS: 10554, 10555, 10556 AND 10557
5 PLAQUE MODELS: 10558, 10559, 10560 AND 10561

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For more information, visit www.desatech.com

WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result causing
property damage, personal injury, or loss of life.

— Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any other
appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any

phone in your building.

• Immediately call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s in-
structions.

• If you cannot reach your gas supplier, call the fire

department.

— Installation and service must be performed by a quali-

fied installer, service agency, or the gas supplier.

Summary of Contents for 2 PLAQUE series

Page 1: ... may result causing property damage personal injury or loss of life Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier ...

Page 2: ...y be installed in an aftermarket permanently located manufactured mobile home where not prohibited by local codes This appliance is only for use with the type of gas indicated on the rating plate This appliance is not convertible for use with other gases Aftermarket Completion of sale not for purpose of resale from the manufacturer TABLE OF CONTENTS Safety Information 3 Local Codes 4 Product Ident...

Page 3: ... or its controls can be dangerous WARNING Do not use a blower insert heat exchanger insert or other accessory not ap proved for use with this heater Due to high temperatures the appliance should be located out of traffic and away from furni ture and draperies Do not place clothing or other flammable material on or near the appliance Never place any objects on the heater Surface of heater becomes v...

Page 4: ...acity 14 Before using furniture polish wax carpet cleaner or similar products turn heater off If heated the vapors from these products may create a white powder residue within burner box or on adjacent walls or furniture 15 Provideadequateclearancesaroundairopenings LOCAL CODES Install and use heater with care Follow all local codes In the absence of local codes use the latest edition of The Natio...

Page 5: ...rovide additional fresh air Unusually tight construction is defined as construction where a walls and ceilings exposed to the out side atmosphere have a continuous water vapor retarder with a rating of one perm 6 x 10 11 kg per pa sec m2 or less with openings gasketed or sealed and b weather stripping has been added on openable windows and doors and c caulking or sealants are applied to ar eas suc...

Page 6: ... support You must pro vide additional fresh air Your options are as follows A Rework worksheet adding the space of an adjoin ing room If the extra space provides an uncon fined space remove door to adjoining room or add ventilation grills between rooms See Ventilation Air From Inside Building B Vent room directly to the outdoors See Ventila tion Air From Outdoors page 7 AIR FOR COMBUSTION AND VENT...

Page 7: ... can use this heater as your primary heat source WARNING A qualified ser vice person must install heater Follow all local codes CHECK GAS TYPE Use only the correct type of gas natural or pro pane LP If your gas supply is not the correct gas type do not install heater Call dealer where you bought heater for proper type heater WARNING This appliance is equipped for natural or pro pane LP gas Field c...

Page 8: ...Vent free heaters add moisture to the air Although this is beneficial installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture See Air for Combustion and Ventilation page 5 If high hu midity is experienced a dehumidifier may be used to help lower the water vapor content in the air For convenience and efficiency install heater where there is easy acc...

Page 9: ...2 plaque heater these two holes are 9 inches apart at centers Attachmountingbrackettowallinoneoftwoways 1 Attaching to wall stud 2 Attaching to wall anchor Attaching to Wall Stud This method provides the strongest hold Insert mounting screws through mounting bracket and into wall studs Attaching toWall Anchor This method allows you to attach mounting bracket to hollow walls wall areas between stud...

Page 10: ... Continued Figure 9 Folding Anchor Figure 10 Popping Open Anchor Wings For Thin Walls Attaching Mounting Bracket To Wall Note Wall anchors mounting screws and spac ers are in hardware package The hardware pack age is provided with heater Attaching To Wall Stud Method For attaching mounting bracket to wall studs 1 Drill holes at marked locations using 9 64 drill bit 2 Place mounting bracket onto wa...

Page 11: ... the vent pointing down as shown in Figure 13 Pointing the vent down protects it from freezing rain or sleet Figure 13 External Regulator With Vent Pointing Down External Regulator Propane LP Supply Tank Vent Pointing Down CAUTION Use only new black iron or steel pipe Inter nally tinned copper tubing may be used in certain areas Check your local codes Use pipe of large enough diameter to allow pro...

Page 12: ... regula tor has been installed between propane LP supply and heater See guidelines under Connect ing to Gas Supply page 10 PRESSURE TESTING GAS SUPPLY PIPING SYSTEM Test Pressures In Excess Of 1 2 PSIG 3 5 kPa 1 Disconnect appliance with its appliance main gas valve control valve and equipment shutoff valve from gas supply piping system Pressures in excess of 1 2 psig will damage heater regulator ...

Page 13: ... which must be lighted by hand When lighting the pilot follow these instructions exactly B BEFORE LIGHTING smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Immediately cal...

Page 14: ... first time after hooking up to gas sup ply If so you may need to press in control knob for 30 seconds or more This will al low air to bleed from the gas system If control knob does not pop up when re leased contact a qualified service person or gas supplier for repairs 6 With control knob pressed in push down and release ignitor button This will light pilot The pilot is attached to the front of b...

Page 15: ...plosion D Do not use this appliance if any part has been under water Immediately call a quali fied service technician to inspect the appli ance and to replace any part of the control system and any gas control which has been under water LIGHTING INSTRUCTIONS 1 STOP Read the safety information col umn 1 2 Make sure equipment shutoff valve is fully open 3 Turn thermostat control knob clockwise Clock...

Page 16: ...tat control knob clockwise Clockwise to the PILOT IGN position THERMOSTAT OPERATION The thermostatic control used on these models differs from standard thermostats Standard thermostats simply turn on and off the burner The thermostat used on this heater senses the room temperature At times the room may ex ceed the set temperature If so the burner will shut off The burner will cycle back on when ro...

Page 17: ... 19 Note The pilot flame on natural gas units will have a slight curve but flame should be blue and have no yellow or orange color GRH OV 008 BAD PILOT LP GRH OV 007 GOOD PILOT LP Thermocouple Pilot Burner Pilot Burner Thermocouple Blue Flame Yellow Flame Figure 24 Correct Pilot Flame Pattern Figure 25 Incorrect Pilot Flame Pattern Figure 26 Correct Burner Flame Pattern Bad Burner Pattern Plaque G...

Page 18: ...se follow the directions on the can If you don t follow directions on the can you could damage the pilot assembly 1 Shut off the unit including the pilot Allow the unit to cool for at least thirty minutes 2 Inspect burner pilot for dust and dirt 3 Blow air through the ports slots and holes in the burner 4 Never insert objects into the pilot tube Clean the pilot assembly also A yellow tip on the pi...

Page 19: ...is clogged 6 Gas regulator setting is not correct 7 Thermostat control knob is not in pilot position thermostat models only REMEDY 1 Replace pilot assembly 2 Replace pilot assembly 3 Reconnect ignitor cable 4 Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry 5 Replace ignitor cable 6 Replace piezo 7 Tighten nut holding piezo igni tor Nut is located inside heater cabinet a...

Page 20: ...hten until snug then tighten 1 4 turn more 5 A Contact local natural or propane LP gas company B Clean ODS pilot see Cleaning and Maintenance page 18 or replace ODS pi lot assembly 6 Replace pilot assembly 7 Replace control valve 8 Wait one minute for safety in terlock system to reset Repeat ignition operation 1 Clean burner injector s see CleaningandMaintenance page 18 or replace burner injector ...

Page 21: ...pany 3 Clean ODS pilot see Cleaning and Maintenance page 18 1 Locate and correct all leaks see Checking Gas Connec tions page 12 2 Replace control valve 1 Take apart gas tubing and re move foreign matter 2 Locate and correct all leaks see Checking Gas Connec tions page 12 1 Refer to Fresh Air for Com bustion and Ventilation re quirements page 5 OBSERVED PROBLEM White powder residue forming within ...

Page 22: ... Dimensions listed are outer most points on the heater includes control knobs and grill For purposes of input adjustment 10555 10557 10559 10561 10551 10553 Btu Variable 6 000 11 000 16 000 6 000 16 000 26 000 5 500 10 000 Btu Thermostat 16 000 26 000 10 000 Type Gas Propane LP Propane LP Propane LP Ignition Piezo Piezo Piezo Pressure Regulator Setting 8 W C 8 W C 8 W C Inlet Gas Pressure in of wa...

Page 23: ...CEMENT PARTS Note Use only original replacement parts This will protect your warranty coverage for parts re placed under warranty PARTS UNDER WARRANTY Contact authorized dealers of this product If they can t supply original replacement part s call DESA Heating Products Technical Service De partment at 1 866 672 6040 When calling DESA Heating Products have ready your name your address model and ser...

Page 24: ...INET BODY MODELS 10550 10551 10552 10553 10554 10555 10556 AND 10557 7 4 2 8 5 6 9 10 1 3 11 For Burner Assembly Breakdown Models 10550 10551 10552 and 10553 see page 26 Models 10554 10555 10556 and 10557 see page 27 Models 10558 10559 10560 and 10561 see page 28 ...

Page 25: ...ARTS AVAILABLE NOT SHOWN 113684 01 113684 01 113684 01 113684 01 Hardware Bag 1 114351 01 114351 01 114351 01 114351 01 Lighting Instruction Tag Eng 1 114351 02 114351 02 114351 02 114351 02 Lighting Instruction Tag Sp 1 105345 01 105345 01 105345 01 105345 01 Cable Tie 1 114351 03 114351 03 114351 03 114351 03 Warning Tag 1 099553 01 099553 01 099553 01 099553 01 Pilot Shield 1 Not a field replac...

Page 26: ...7 099059 04 099059 07 099059 04 ODS Pilot Assembly 1 9 098514 01 098514 01 098514 01 098514 01 Thermocouple 1 10 099413 01 099413 01 Control Valve 1 098522 24 098522 24 Thermostat Valve 1 11 098200 04 098200 04 102394 02 102394 02 Valve Bracket 1 12 098508 01 098508 01 Valve Retainer Nut 1 13 113331 01 113331 01 Burner Tube 1 14 114041 01 114041 01 Manifold 1 ILLUSTRATED PARTS BREAKDOWN AND PARTS ...

Page 27: ...7 01 104667 01 Injector Holder B 1 10 099059 07 099059 04 099059 07 099059 04 ODS Pilot Assembly 1 11 098514 01 098514 01 098514 01 098514 01 Thermocouple 1 12 105527 01 105527 01 105527 01 105527 01 Pilot Bracket 1 13 103844 01 103844 01 098522 24 098522 24 Control Valve 1 14 098200 04 098200 04 102394 02 102394 02 Valve Bracket 1 15 098508 01 098508 01 Valve Retainer Nut 1 16 113643 01 113643 01...

Page 28: ...01 104667 01 Injector Holder B 1 10 113678 01 113678 01 113678 02 113678 02 Pilot Tube 1 11 099059 07 099059 04 099059 07 099059 04 ODS Pilot Assembly 1 12 098514 01 098514 01 098514 01 098514 01 Thermocouple 1 13 100747 01 100747 01 098522 24 098522 24 Control Valve 1 14 098200 04 098200 04 102394 02 102394 02 Valve Bracket 1 15 098508 01 098508 01 Valve Retainer Nut 1 16 113642 01 113642 01 Burn...

Page 29: ...vice portableheaterparts com FBD 1349 Adams Street Bowling Green KY 42103 3414 270 846 1199 1 800 654 8534 Fax 1 800 846 0090 franktalk aol com Master Parts Dist 1251 Mound Ave NW Grand Rapids MI 49504 2672 616 791 0505 1 800 446 1446 www nbmc com Washer Equipment Co 1715 Main Street Kansas City MO 64108 2195 KS MO AR 816 842 3911 www washerparts com East Coast Energy 707 Broadway W Long Branch NJ...

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Page 32: ...r MUST be installed by a qualified installer in accordance with all local codes and instructions furnished with the unit This warranty does not apply to parts that are not in original condition because of normal wear and tear or parts that fail or become damaged as a result of misuse accidents lack of proper maintenance or defects caused by improper installation Travel diagnostic cost labor transp...

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