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4. Wait five (5) minutes to clear out any gas. Then smell for gas, including

near the floor. If you smell gas, STOP! Follow “B” in the safety information
at the top of page 17. If you don’t smell gas, go to the next step.

5. Press in control knob.

Note:

 

You may be running this heater for the first time after hooking up

to gas supply. If so, you may need to press in control knob for 30 seconds.
This will allow air to bleed from the gas system.

6. Keep control knob pressed in and turn it counterclockwise 

C-clockwise

 to the

PILOT/IGN position. This will light pilot.

Note:

 You will hear a loud “click” when the control knob reaches the

PILOT/IGN position.

If pilot does not light

• turn control knob clockwise 

Clockwise

 to the OFF position

• repeat steps 5 and 6

If pilot does not stay lit after several tries

• refer to Troubleshooting, pages 22 through 25
• contact a qualified service person or gas supplier for repairs

Until repairs are made, light pilot with match. To light pilot with match, see
Manual Lighting Procedure
, page 20.

7. Keep control knob pressed in for 10 seconds after lighting pilot. After 10

seconds, release control knob.
• If control knob does not pop up when released, contact a qualified

service person or gas supplier for repairs.

Note:

 If pilot goes out, repeat steps 3 through 7.

Ignitor Electrode

Figure 16 - Pilot

Pilot Burner

Thermocouple

OPERATING

HEATER

Continued

Summary of Contents for Comfort Glow CGN18RA

Page 1: ...ot 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 supp...

Page 2: ...injury or death from burns fire explosion electrical shock and carbon monoxide poisoning WARNING ICON G 001 DANGER Carbon monoxide poisoning may lead to death Carbon Monoxide Poisoning Early signs of...

Page 3: ...operly This heater has an oxygen depletion sensor ODS pilot light safety system The ODS shuts down the heater if not enough fresh air is available See Air for Combustion and Ventilation pages 5 throug...

Page 4: ...march Park Quincy MA 02269 Figure 1 Vent Free Natural Gas Heater Model CGN30D Shown PRODUCT FEATURES Safety Device This heater has a pilot with an Oxygen Depletion Sensor Shutoff System ODS The ODS pi...

Page 5: ...ur home All fuel burning appliances need fresh air for proper combustion and ventilation Exhaust fans fireplaces clothes dryers and fuel burning appliances draw air from the house to operate You must...

Page 6: ...heater ___________________ BTU Hr Gas fireplace logs ___________________ BTU Hr Other gas appliances ___________________ BTU Hr Total ___________________ BTU Hr Example Gas water heater 40 000 BTU Hr...

Page 7: ...ILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space When ventilat ing to an adjoining unconfined space you must provide two permanent openings...

Page 8: ...to the outdoors These spaces include attics and crawl spaces Follow the National Fuel Gas Code NFPA 54 ANSI Z223 1 Section 5 3 Air for Combustion and Ventilation for required size of ventilation grill...

Page 9: ...Purchase the optional A G A design certified manual shutoff valve from your dealer See Accessories page 27 LOCATING HEATER This heater is designed to be mounted on a wall WARNING ICON G 001 WARNING M...

Page 10: ...NING ICON G 001 CAUTION If you install the heater in a home garage heater pilot and burner must be at least 18 inches above floor locate heater where moving vehicle will not hit it For convenience and...

Page 11: ...nt Panel Of Heater 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 16 inches apart from their centers At...

Page 12: ...oles drilled in wall 3 Insert mounting screws through bracket and into wall studs 4 Tighten screws until mounting bracket is firmly fastened to wall studs Attaching to wall anchor method For attaching...

Page 13: ...Mounting Screws 1 Locate two bottom mounting holes These holes are near bottom on back panel of heater see Figure 11 2 Mark screw locations on wall 3 Remove heater from mounting bracket 4 If installi...

Page 14: ...st be upstream from heater see Figure 12 page 15 Apply pipe joint sealant lightly to male threads This will prevent excess sealant from going into pipe Excess sealant in pipe could result in clogged h...

Page 15: ...ess Of 1 2 PSIG 1 Disconnect heater and its individual manual shutoff valve from gas supply piping system Pressures in excess of 1 2 psig will damage heater regulator 2 Cap off open end of gas pipe wh...

Page 16: ...RE TESTING HEATER GAS CONNECTIONS 1 Open manual shutoff valve see Figure 13 2 Open main gas valve located on or near gas meter 3 Make sure control knob of heater is in the OFF position 4 Check all joi...

Page 17: ...turn the gas control knob Never use tools If the knob will not push in or turn by hand don t try to repair it call a qualified service technician or gas supplier Force or attempted repair may result i...

Page 18: ...oud click when the control knob reaches the PILOT IGN position If pilot does not light turn control knob clockwise Clockwise to the OFF position repeat steps 5 and 6 If pilot does not stay lit after s...

Page 19: ...ion WARNING ICON G 001 CAUTION Do not try to adjust heating levels by using the manual shut off valve LOW OFF PILOT IGN MED OFF PILOT IGN HIGH OFF PILOT IGN OFF OFF HIGH MED LOW Control Knob CGN18RA C...

Page 20: ...e control knob TO TURN OFF GAS TO APPLIANCE OPERATING HEATER Continued INSPECTING BURNER Check pilot flame pattern and burner flame pattern often PILOT FLAME PATTERN Figure 18 shows a correct pilot fl...

Page 21: ...shows an incorrect burner flame pattern Figure 20 Correct Burner Flame Pattern Figure 21 Incorrect Burner Flame Pattern Bad Burner Pattern 5 Plaque GRH OV 019A If burner flame pattern is incorrect as...

Page 22: ...s of heater before each use Have heater inspected yearly by a qualified service person Heater may need more frequent cleaning due to excessive lint from carpeting bedding material etc WARNING ICON G 0...

Page 23: ...hermo couple to cool causing pilot flame to go out This problem could be caused by one or both of the following A Low gas pressure B Dirty or partially clogged ODS pilot 6 Thermocouple dam aged 7 Cont...

Page 24: ...nance page 22 or re place burner orifice s 2 Contact local natural gas company 3 Replace burner 4 Replace gas regulator 1 Replace burner 2 Contact local natural gas company 3 Turn control knob until i...

Page 25: ...Warn ing statement at top of page 1 Not enough fresh air is available 2 Low line pressure 3 ODS pilot is partially clogged 1 Gas leak See Warn ing statement at top of page 2 Control valve defective 1...

Page 26: ...0 When calling DESA International have ready your name your address model number of your heater how heater was malfunctioning type of gas used propane LP or natural gas purchase date Usually we will a...

Page 27: ...the address listed on the back page of this manual Send a check for 5 00 payable to DESA International Baltimore Electric 1348 Dixwell Avenue Hamden CT 06514 1 800 397 7553 203 248 7553 Parts Departme...

Page 28: ...EXPLODED VIEW ILLUSTRATED PARTS BREAKDOWN Model CGN18RA 13 17 13 16 ODS PILOT BURNER ASSEMBLY 1 2 3 11 6 4 8 5 6 7 12 13 9 10 14 A B C 13 1 13 2 13 3 13 10 13 4 13 5 13 6 13 7 13 8 13 9 13 14 13 13 1...

Page 29: ...ob 1 13 See Detail Burner Assembly 1 13 1 099218 01 Burner 1 13 2 098508 01 Valve Retainer Nut 1 13 3 099056 03 Injector 3 13 4 099048 01 Tubing Valve to plaque A 1 13 5 099049 01 Tubing Valve to plaq...

Page 30: ...D VIEW ILLUSTRATED PARTS BREAKDOWN Model CGN30D 13 17 13 16 ODS PILOT BURNER ASSEMBLY E D C 13 1 13 2 13 3 13 9 13 4 13 5 13 7 13 6 13 18 13 8 13 10 13 14 13 13 13 12 13 15 13 11 B A 1 2 3 11 6 13 4 8...

Page 31: ...99218 02 Burner 1 13 2 098508 01 Valve Retainer Nut 1 13 3 099056 02 Injector 5 13 4 099052 01 Tubing Valve to Plaque B D 1 13 5 099053 01 Tubing Valve to Plaque C 1 13 6 099057 01 Pressure Tap Fittin...

Page 32: ...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...

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