Page 2 - VENT-FREE NATURAL GAS HEATER; Carbon Monoxide Poisoning:; WARNINGS; DANGER: Carbon monoxide
2 104779 VENT-FREE NATURAL GAS HEATER 15,000 TO 28,000 BTU/HR 1. Use only natural gas. Do not convertheater to use different fuel type. 2. 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. • immediatel...
Page 3 - OWNER’S MANUAL; LOCAL CODES; Figure 1 - Vent-Free Gas Log Natural Gas Space Heater; UNPACKING; Remove heater from carton.; Safety Pilot; American National Standards Institute, Inc.
3 104779 OWNER’S MANUAL ASDFKIGLFJI alskdidkoemkgo dkirlnfgpd'fASDFKIGLFJI alskdidkoemkgo dkirlnfgpd'f ASDFKIGLFJI alskdidkoemkgo dkirlnfgpd'fASDFKIGLFJI alskdidkoemkgo dkirlnfgpd'f ASDFKIGLFJI alskdidkoemkgo dkirlnfgpd'fASDFKIGLFJI alskdidkoemkgo dkirlnfgpd'f ASDFKIGLFJI alskdidkoemkgo dkirlnfgpd'f...
Page 4 - W A R N I N G : A l w a y s h a v e; Figure 4 - Assembling Heater; ASSEMBLY; ASSEMBLING HEATER; • Phillips screwdriver; Removing Front Panel Of Heater; Figure 2 - Removing Front Panel of Heater; Installing Log; For easier installation, lay heater on
4 104779 VENT-FREE NATURAL GAS HEATER 15,000 TO 28,000 BTU/HR W A R N I N G : A l w a y s h a v e burner shield and screen in placebefore operating heater. This pre-vents excessive temperatures onheater surfaces. Failure to position the parts inaccordance with these diagramsor failure to use only pa...
Page 5 - Figure 7 - Attaching Brass Trim to Heater; Unusually Tight Construction
5 104779 OWNER’S MANUAL ASSEMBLY Continued Assembling and AttachingBrass Trim 1. Remove packaging from remainingthree pieces of brass trim. 2. Locate four brass screws, two adjust-ing plates with set screws, and twoshims in the hardware packet. 3. Align shim under adjusting plate asshown in Figure 6...
Page 6 - Determining if You Have a Confined or Unconfined Space
6 104779 VENT-FREE NATURAL GAS HEATER 15,000 TO 28,000 BTU/HR WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one ofthe methods descr...
Page 7 - Figure 8 - Ventilation Air from Inside Building; VENTILATION AIR; Ventilation Air From Outdoors; Do not provide openings for; Figure 9 - Ventilation Air from Outdoors
7 104779 OWNER’S MANUAL Or Remove Door into Adjoining Room, Option 3 Ventilation Grills Into Adjoining Room, Option 2 12" 12" Ventilation Grills into Adjoining Room, Option 1 AIR FORCOMBUSTION ANDVENTILATION Continued Figure 8 - Ventilation Air from Inside Building VENTILATION AIR Ventilatio...
Page 8 - CAUTION: If you install the; For convenience and efficiency, install heater; INSTALLATION; CHECK GAS TYPE; Only use optional mantel; WARNING: Never install the
8 104779 VENT-FREE NATURAL GAS HEATER 15,000 TO 28,000 BTU/HR CAUTION: If you install the heater in a home garage• heater pilot and burner must be at least 18 inches abovefloor. • locate heater where moving ve- hicle will not hit it. For convenience and efficiency, install heater • where there is ea...
Page 9 - INSTALLATION OPTIONS; Mounting Bracket; Figure 13 - Mounting Bracket Clearances; Attaching to wall stud; Marking Screw Locations; WARNING: Maintain minimum; Only mark last hole on each end
9 104779 OWNER’S MANUAL INSTALLATION Continued THERMOSTAT SENSINGBULB The thermostat sensing bulb has been placedinside the heater for protection during shipping. Locating Thermostat SensingBulb 1. Remove front panel of heater (see Fig-ure 2, page 4). 2. Locate thermostat sensing bulb justunder burn...
Page 10 - Attaching to wall stud method; Figure 14 - Folding Anchor; Do not replace front panel at this
10 104779 VENT-FREE NATURAL GAS HEATER 15,000 TO 28,000 BTU/HR Installing Bottom MountingScrews 1. Locate two bottom mounting holes.These holes are near bottom on backpanel of heater (see Figure 17). 2. Mark screw locations on wall. 3. Remove heater from mounting bracket. 4. If installing bottom mou...
Page 11 - Securing Hearth Base to Floor; Stand heater up on base.; WITH; Assembling Mantel; Only use the optional man-
11 104779 OWNER’S MANUAL Securing Hearth Base to Floor 1. Position hearth base in desired location.Mark holes for drilling (see Figure 18).Remove hearth base. 2. For carpeted floor, make a small cutwith a sharp knife at marked loca-tions before drilling. If securing to awood floor, drill a 3/4" ...
Page 12 - Figure 20 - Gas Connection; Check gas line pressure be-; WARNING: Never connect; Hold pressure regulator
12 104779 VENT-FREE NATURAL GAS HEATER 15,000 TO 28,000 BTU/HR Tee Joint ReducerBushing to1/8" NPT 1/8" NPTPlug Tap TestGaugeConnection * Tee Joint Pipe Nipple Cap SedimentTrap PressureRegulator 3/8" NPTPipe Nipple GroundUnionJoint HeaterCabinet 3" Minimum Note: Burner bracketnot sho...
Page 13 - Test Pressures In Excess Of 1/2 PSIG; WARNING: Never use an open; Correct all leaks at once.; Figure 21 - Manual Shutoff Valve; Figure 22 - Checking Gas Joints; FOR YOUR SAFETY
13 104779 OWNER’S MANUAL Pressure Testing Gas SupplyPiping System Test Pressures In Excess Of 1/2 PSIG 1. Disconnect heater and its individualmanual shutoff valve from gas supplypiping system. Pressures in excess of1/2 psig will damage heater regulator. 2. Cap off open end of gas pipe wheremanual sh...
Page 14 - Shutting Off Heater; CAUTION: Do not try to adjust
14 104779 VENT-FREE NATURAL GAS HEATER 15,000 TO 28,000 BTU/HR TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1. Turn control knob clockwise Clockwise to the OFF position. 2. Turn off all electric power to the ap-pliance if service is to be performed. Shutting Off Burner Only (pilotstays lit) Turn...
Page 15 - PILOT FLAME PATTERN; Figure 25 - Correct Pilot Flame Pattern; Figure 26 - Incorrect Pilot Flame Pattern; BURNER FLAME PATTERN; When using the heater the first time,; Figure 27 - Correct Burner Flame Pattern; WARNING: If yellow tipping; CABINET; Air Passageways; CAUTION: You must keep
15 104779 OWNER’S MANUAL INCORRECT FLAME PATTERN AT HIGH POSITION CORRECT FLAME PATTERN AT HIGH POSITION Good Pilot-Nat. Port GRH/OV 007D INSPECTINGBURNER Check pilot flame pattern and burner flamepattern often. PILOT FLAME PATTERN Figure 25 shows a correct pilot flame pat-tern. Figure 26 shows an i...
Page 16 - TROUBLESHOOTING; OBSERVED PROBLEM
16 104779 VENT-FREE NATURAL GAS HEATER 15,000 TO 28,000 BTU/HR Note: All troubleshooting items are listed in order of operation. TROUBLESHOOTING OBSERVED PROBLEM When ignitor button is pressed, there is nospark at ODS/pilot When ignitor button is pressed, there isspark at ODS/pilot but no ignition O...
Page 17 - nance, page 15) or replace burner orifice; POSSIBLE CAUSE
17 104779 OWNER’S MANUAL OBSERVED PROBLEM Burner does not light after ODS/pilot is lit Delayed ignition of burner Burner backfiring during combustion Yellow flame during burner combustion Slight smoke or odor during initial operation Heater produces a whistling noise whenburner is lit White powder r...
Page 18 - IMPORTANT
18 104779 VENT-FREE NATURAL GAS HEATER 15,000 TO 28,000 BTU/HR TROUBLESHOOTING Continued OBSERVED PROBLEM Heater produces a clicking/ticking noisejust after burner is lit or shut off Heater produces unwanted odors Heater shuts off in use (ODS operates) Gas odor even when control knob is in OFFpositi...
Page 19 - SPECIFICATIONS; Parts Under Warranty; SERVICE HINTS
19 104779 OWNER’S MANUAL TECHNICALSERVICE You may have further questions about in-stallation, operation, or troubleshooting. If so, contact DESA International’s Techni-cal Service Department at 1-800-323-5190. BTU (Variable) 15,000/28,000 Type Gas Natural Only Ignition Piezo Pressure Regulator Setti...
Page 20 - PARTS CENTRALS
20 104779 VENT-FREE NATURAL GAS HEATER 15,000 TO 28,000 BTU/HR These Parts Centrals are privately-owned businesses. They have agreed to support ourcustomer’s needs by providing original replacement parts and accessories. PARTS CENTRALS Master Parts Distributors 1184 Wilson Ave. NWGrand Rapids, MI 49...
Page 21 - ACCESSORIES; FAN KIT; Finished - GMC22F Series; CORNER MANTEL
21 104779 OWNER’S MANUAL ACCESSORIES Purchase these heater accessories from yourlocal dealer. If they can not supply theseaccessories, either contact your nearest PartsCentral (see page 20) or call DESAInternational’s Sales Department at 1-800-458-2472 for information. You can alsowrite to the addre...
Page 23 - PARTS LIST; KEY
23 104779 OWNER’S MANUAL PARTS LIST RFN28TD This list contains replaceable parts used in your heater. When ordering parts, follow theinstructions listed under Replacement Parts on page 19 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 098304-01 Screw, #10 x 3/8" 6 2 100566-01CK Front Pan...
Page 24 - LIMITED WARRANTY; WARRANTY INFORMATION; KEEP THIS WARRANTY; NOT A UPC
104779-01REV. A5/98 Model Serial No. Date Purchased Always specify model and serial numbers when communicating with the factory. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard writtenwarranty. We make no other warranty, exp...