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BG30N, BG30NT, BG30P, BG30PT, FG30N, FG30P, GG30N, GG30P, 

GMG30N, GMG30NT, GMG30P, GMG30PT, GN30, GN30T, GP30, 

GP30T, RG30N, RG30NT, RG30P, RG30PT

UNVENTED (VENT-FREE) BLUE FLAME GAS GARAGE HEATER

SAFETY INFORMATION AND INSTALLATION MANUAL

For more information, visit www.desatech.com

WARNING: If the information in this manual is not fol-
lowed 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 instructions.

•  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.

INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.

Summary of Contents for BG30N

Page 1: ...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 Immediatelycallyourgassupplierfromaneighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire ...

Page 2: ...ncer or birth defects or other reproductive harm IMPORTANT Read this owner s manualcarefullyandcompletely 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 DANGER Carbonmonoxide poisoning may lead to death CarbonMonoxidePoisoning Early signs of carbon monoxi...

Page 3: ... other gases 2 Do not place propane LP supply tank s in side any structure Locate propane LP supply tank s outdoors 3 This heater shall not be installed in a bedroom or bathroom 4 If you smell gas shut off gas supply 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 su...

Page 4: ... the unit Vent free gas products are prohibited for bed room and bathroom installation in the Com monwealth of Massachusetts Unpacking 1 Remove heater from carton 2 Remove all protective packaging applied to heater for shipment 3 Check heater for any shipping damage If heater is damaged promptly inform dealer where you bought heater SAFETY INFORMATION Continued Figure 1 Vent Free Gas Heater Ignito...

Page 5: ...air that leaks around doors and windows may provide enough fresh air for combustion and ventilation However in buildings of unusually tight construction you must provide additional fresh air Unusually tight construction is defined as con struction where a walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one perm 6x10 11 kg per pa sec m2 o...

Page 6: ... Di rect vent draws combustion air from the outdoors and vents to the outdoors Example Gas water heater ______________ Btu Hr Vent free heater _ ____________ Btu Hr Total _ ____________ Btu Hr 40 000 30 000 70 000 4 Compare the maximum Btu Hr the space can support with the actual amount of Btu Hr used ________________Btu Hr maximum the space can support ________________Btu Hr actual amount of Btu ...

Page 7: ...ralheatingsystem youmay run system s circulating blower whileusingheater Thiswillhelp circulatetheheatthroughoutthe house In the event of a power outage you 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 typ...

Page 8: ...ffic areas in windy or drafty areas Figure 4 Mounting Clearances As Viewed From Front of Heater INSTALLATION Continued CAUTION This heater cre ates warm air currents These currents move heat to wall sur faces next to heater Installing heater next to vinyl or cloth wall coverings or operating heater where impurities such as but not limited to tobacco smoke aromatic candles cleaning flu ids oilorker...

Page 9: ...bottom of front panel forward then out 3 Remove any remaining packaging materials Methods For Attaching Mounting Bracket To Wall Only use last hole on each end of mounting bracket to attach bracket to wall These two holes are 14 inches apart from their centers Attach mounting bracket to wall in one of two ways 1 Attaching to wall stud 2 Attaching to wall anchor Attaching to Wall Stud This method p...

Page 10: ...r attaching mounting bracket to hollow walls wall areas between studs or solid walls concrete or masonry 1 Drill holes at marked locations using 5 16 drill bit For solid walls concrete or masonry drill at least 1 deep 2 Fold wall anchor as shown in Figure 9 3 Insert wall anchor wings first into hole Tap anchor flush to wall 4 For thin walls 1 2 or less insert red key into wall anchor Push red key ...

Page 11: ... and checking for leaks see pages 11 through 13 INSTALLATION Continued CONNECTING TO GAS SUPPLY WARNING This appliance requires a 3 8 NPT National Pipe Thread inlet connection to the pressure regulator WARNING A qualified ser vicepersonmustconnectheater to gas supply Follow all local codes WARNING For natural gas neverconnectheatertoprivate non utility gas wells This gas is com monly known as well...

Page 12: ...will occur Typical Inlet Pipe Diameter 30 000 Btu Hr Models 1 2 or greater Installation must include equipment shutoff valve union and plugged 1 8 NPT tap Locate NPT tap within reach for test gauge hook up NPT tap must be upstream from heater see Figure 14 IMPORTANT Install an equipment shutoff valve in an accessible location The equipment shutoff valve is for turning on or shutting off the gas to...

Page 13: ...g system by either opening propane LP supply tank valve for propane LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air Figure 15 Equipment Shutoff Valve Open Closed Equipment Shutoff Valve 3 Check all joints from gas meter for natural gas see Figure 16 or propane LP supply tank for propane LP gas to equipment shutoff valve see Figure 17 Apply a no...

Page 14: ...ay result causing property damage per sonal injury or loss of life A This appliance has a pilot 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 a...

Page 15: ... The thermostat adjusts the amount of gas flow to the burner This increases or decreases the burner flame height At times the room may exceed the set temperature If so the burner will shut off The burner will cycle back on when room temperature drops below the set temperature The control knob can be set to any heat level between 1 and 5 Selecting the 5 setting will cause the burner to remain fully...

Page 16: ...pilot flame pattern and burner flame pat tern often PILOT FLAME PATTERN Figure 21 shows a correct pilot flame pattern Figure 22 shows an incorrect pilot flame pattern The incorrect pilot flame is not touching the thermocouple This will cause the thermocouple to cool When the thermocouple cools the heater will shut down If pilot flame pattern is incorrect as shown in Figure 22 turn heater off see T...

Page 17: ...ommend that you keep the burner tube and pilot assembly clean and free of dust and dirt To clean these parts we recommend using compressed air no greater than 30 PSI Your local computer store hardware store or home center may carry compressed air in a can If using compressed air in a can please follow the directions on the can If you don t follow directions on the can you could damage the pilot as...

Page 18: ...osition 4 Air in gas lines when in stalled 5 Depleted gas supply propane LP gas only 6 ODS pilot is clogged 7 Gas regulator setting is not correct OBSERVED PROBLEM When ignitor button is pressed there is no spark at ODS pilot When ignitor button is pressed there is spark at ODS pilot but no ignition REMEDY 1 Replace pilot assembly 2 Replace pilot assembly 3 Reconnect ignitor cable 4 Free ignitor c...

Page 19: ...ane LP gas company 1 Contact local natural or pro pane LP gas company 2 Clean burner see Cleaning and Maintenance page 17 or replace burner orifice 1 Clean burner see Cleaning and Maintenance page 17 or replace burner orifice 2 Replace burner 3 Replace gas regulator POSSIBLE CAUSE 1 Control knob not fully pressed in 2 Control knob not pressed in long enough 3 Safety interlock system has been trigg...

Page 20: ...s from furniture polish wax carpet cleaners etc may turn into white powder residue 1 Metal expanding while heating or contracting while cooling REMEDY 1 Check burner for dirt and debris If found clean burner see Cleaning and Mainte nance page 17 2 Replace gas regulator 3 Clean burner see Cleaning and Maintenance page 17 1 Problem will stop after a few hours of operation 1 Turn control knob to the ...

Page 21: ...is partially clogged 1 Gas leak See Warning statement above 2 Control valve defective 1 Foreign matter between con trol valve and burner 2 Gas leak See Warning statement above 1 Not enough combustion ven tilation air OBSERVED PROBLEM Heater produces unwanted odors Heater shuts off in use ODS operates Gasodorevenwhencontrolknob is in OFF position Gas odor during combustion Moisture condensation not...

Page 22: ...of your heater ready You can also visit DESAHeating Products techni cal service web site at www desatech com Service Publications Youcanpurchaseaservicemanualfromtheaddress listed on the back page of this manual Send a check for 5 00 payable to DESA Heating Products Replacement Parts Note Use only original replacement parts This will protect your warranty coverage for parts replaced under warranty...

Page 23: ... N County Rd 400 East Valparaiso IN 46383 9704 219 462 7441 1 888 619 7060 www portableheaterparts com sales portableheaterparts com techservice 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 Parts Centra...

Page 24: ...www desatech com 114683 01D 24 Illustrated Parts Breakdown Models BG30N BG30P FG30N FG30P GG30N GG30P GMG30N GMG30P GN30 GP30 RG30N RG30P 2 3 6 8 9 9 10 11 12 13 14 16 18 19 4 7 1 21 5 15 17 20 ...

Page 25: ...110803 01 ODS Pilot Assembly 1 110803 02 ODS Pilot Assembly 1 12 103447 06 Burner 1 13 099387 05 Pilot Tubing 1 14 103845 07 Injector 1 103845 08 Injector 1 15 099066 02 Mounting Bracket 1 16 099415 17 Gas Regulator 1 099415 18 Gas Regulator 1 17 NJF 8C Hex Nut 1 18 103570 04 Outlet Tubing 1 19 103572 03 Inlet Tubing 1 20 109303 03 Baffle 1 21 098354 02 Control Knob 1 PARTS AVAILABLE NOT SHOWN 110...

Page 26: ...www desatech com 114683 01D 26 ILLUSTRATED PARTS BREAKDOWN Models BG30NT BG30PT GMG30NT GMG30PT GN30T GP30T RG30NT RG30PT 2 3 8 9 10 10 11 12 13 14 16 18 19 4 7 1 15 17 6 5 ...

Page 27: ... 1 10 098249 01 Nut 2 11 110803 01 ODS Pilot Assembly 1 110803 02 ODS Pilot Assembly 1 12 103447 06 Burner 1 13 099387 03 Pilot Tubing 1 14 103845 07 Injector 1 103845 08 Injector 1 15 099066 02 Mounting Bracket 1 16 099415 17 Gas Regulator 1 099415 18 Gas Regulator 1 17 NJF 8C Hex Nut 1 18 103255 02 Outlet Tubing 1 19 103256 02 Inlet Tubing 1 PARTS AVAILABLE NOT SHOWN 110186 01 Thermocouple Kit 1...

Page 28: ...nd or DESAHeating Products who will provide original factory replacement parts Failure to use original factory replacement parts voids this warranty The heater 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 fa...

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