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104385

UNVENTED NATURAL GAS LOG HEATER

CGS2718N, CGS3124N, CLD3018N,
CLD3924NT, and CCL3930NT(A)

TROUBLESHOOTING

Continued

 WARNING: 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 supplier’s instructions.

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

POSSIBLE CAUSE

1. Metal expanding while heating or con-

tracting while cooling

1. Heater burning vapors from paint, hair

spray, glues, cleaners, chemicals, new
carpet, etc. (See 

IMPORTANT

 state-

ment above)

2. Gas leak. 

See Warning 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 Warning statement at

top of page

2. Control valve defective

1. Foreign matter between control valve

and burner

2. Gas leak. 

See Warning statement at

top of page

1. Thermostat sensing bulb needs to be re-

positioned

OBSERVED PROBLEM

Heater produces a clicking/ticking noise
just 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 OFF
position

Gas odor during combustion

Log set cycles to pilot, but room tempera-
ture drops to a lower than ideal level before
log set comes back on

REMEDY

1. This is common with most heaters. If

noise is excessive, contact qualified ser-
vice person

1. Open window and ventilate room. Stop

using odor causing products while heater
is running

2. Locate and correct all leaks (see Check-

ing Gas Connections, page 12)

1. Open window and/or door for ventilation
2. Contact local natural gas company
3. Clean ODS/pilot (see Cleaning and

Maintenance, page 19)

1. Locate and correct all leaks (see Check-

ing Gas Connections, page 12)

2. Replace control valve

1. Take apart gas tubing and remove for-

eign matter

2. Locate and correct all leaks (see Check-

ing Gas Connections, page 12)

1. Reposition thermostat sensing bulb (see

Optional Positioning of Thermostat
Sensing Bulb
, page 23

IMPORTANT:

 Operating heater where impurities in air exist may create odors. Cleaning

supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles,
etc., create fumes. These fumes may mix with combustion air and create odors. These odors
will disappear over time.

www.desatech.com

Summary of Contents for Comfort Glow CCL3930NT

Page 1: ...ontrolled Models ROYAL ENGLISH OAK BILTMORE SPLIT OAK AND WINCHESTER OAK UNVENTED VENT FREE NATURAL GAS LOG HEATER This appliance may be installed in an aftermarket manufactured mobile home where not...

Page 2: ...rs never op erate this heater with glass doors closed If you operate heater with doors closed heat buildup inside fireplace will cause glass to burst Also if fireplace open ing has vents at the bottom...

Page 3: ...andard for unvented heaters State and local codes in some areas prohibit the use of vent free heaters Non thermostat models may also be operated as a vented decorative ANS Z21 60 product by opening fl...

Page 4: ...r for combustion and ventilation However in buildings of unusually tight construction you must provide additional fresh air Unusually tight construction is de fined as construction where a walls and c...

Page 5: ..._____ Btu Hr Do not include direct vent gas appliances Direct vent draws combustion air from the outdoors and vents to the outdoors 4 Compare the maximum Btu Hr the space can support with the actual a...

Page 6: ...c has a thermostat controlledpowervent Heatedair enteringtheatticwillactivatethepowervent Figure 2 Ventilation Air from Inside Building Outlet Air Ventilated Attic Outlet Air Inlet Air Inlet Air Venti...

Page 7: ...for proper type heater IMPORTANT Vent freeheatersaddmois ture to the air Although this is beneficial installing heater in rooms without enough ventilation air may cause mildew to form from too much m...

Page 8: ...combustible material okay Less than 8 Noncombustible material must be extended to at least 8 See Between 8 and 12 above If you cannot extend material you must operate heater with flue damper open Figu...

Page 9: ...8 and 24 Models 20 2 1 2 6 8 10 12 Distances to Underside of Mantel Hood GA6050 GA6052 Top of Fireplace Opening Underside of Mantel Shelf Mantel Shelf Figure 9 Minimum Fireplace Clearances Above Combu...

Page 10: ...sonsnumber1or2aboveapplytoyou you must permanently open chimney flue damper You must install the damper clamp accessory to order see Accessories page 25 This will insure vented operation see Figure 10...

Page 11: ...A design certified manual shutoff valve from your dealer See Accessories page 25 CAUTION Use only new black iron or steel pipe Inter nally tinned copper tubing may be used in certain areas Check your...

Page 12: ...of liquid soap and water to gas joints Bubbles form ing show a leak 5 Correct all leaks at once 6 Reconnect heater and manual shutoff valve to gas supply Check reconnected fittings for leaks TestPress...

Page 13: ...the notches in the bottom of the crossover log 3 Place the crossover log on top of the back log and front log Make sure the notches of the crossover log line up with rectangular knobs on top of the ba...

Page 14: ...on andperiodicallythereafter check to ensure that no flame comes in contact with any log With the heater set to High check to see if flames contact any log If so re position logs according to the logi...

Page 15: ...Make sure the front of the middle log is resting on the tabs of the grate base 3 Locatepegsonthebottomofbacklog 3 Slide these pegs into the holes in the grate base behind the burner see Figure 25 Figu...

Page 16: ...or window to vent smell Thiswillonlylastafewhours Note Home owners generally prefer to operate their heater with the chimney damper closed This will put all the heat into the room However there may be...

Page 17: ...call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas sup plier call the fire department C Use only your hand to push in or turn the gas c...

Page 18: ...ot stay lit con tact a qualified service person or gas supplier for repairs Until repairs are made light pilot with match To light pilot with match see Manual Light ing Procedure 7 Keep control knob p...

Page 19: ...JECTOR HOLDER AND PILOT AIR INLET HOLE The primary air inlet holes allow the proper amount of air to mix with the gas This provides a clean burning flame Keep these holesclearofdust dirt andlint Clean...

Page 20: ...uple damaged 7 Control valve damaged REMEDY 1 Reconnect ignitor cable 2 Free ignitor cable if pinched by any metal or tubing Keep ignitor cable dry 3 Tighten nut holding piezo ignitor to base panel of...

Page 21: ...ombustion and Venti lation requirements page 4 1 Turn control knob to LO position and let warm up for a minute 2 Operate burner until air is removed from line Have gas line checked by local natural ga...

Page 22: ...shut off Heater produces unwanted odors Heater shuts off in use ODS operates Gas odor even when control knob is in OFF position Gas odor during combustion Log set cycles to pilot but room tempera tur...

Page 23: ...actory built metal fireplace see Figure 42 for location If your fireplace has glass doors position sensing bulb directly behind door gap on right bot tom side see Figure 43 4 The mounting clip must be...

Page 24: ...rt s call DESA International s Techni cal Service Department at 1 800 DESA LOG 1 800 337 2564 WhencallingDESAInternational haveready your name your address model and serial numbers of your heater how...

Page 25: ...00 397 7553 203 248 7553 Parts Department Portable Heater Parts 342 N County Rd 400 East Valparaiso IN 46383 All States 219 462 7441 1 800 362 6951 FBD 1349 Adams Street Bowling Green KY 42103 502 846...

Page 26: ...ATER CGS2718N CGS3124N CLD3018N CLD3924NT and CCL3930NT A ILLUSTRATED PARTS BREAKDOWN 4 2 1 3 12 21 10 11 21 7 21 5 6 8 9 15 14 16 19 22 18 13 19 17 20 2 20 1 20 18 23 Variable Manually Controlled Win...

Page 27: ...354 01 098354 01 Control Knob 1 16 102445 01 102445 01 Piezo Ignitor 1 17 098249 01 098249 01 Nut M5 2 18 099387 08 099387 08 Pilot Tube 1 19 098271 07 098271 07 Ignitor Cable 1 20 103042 01 103042 01...

Page 28: ...LOG HEATER CGS2718N CGS3124N CLD3018N CLD3924NT and CCL3930NT A 23 20 10 11 12 20 7 20 20 5 6 9 8 15 14 16 18 21 17 13 18 22 19 17 2 1 3 4 ILLUSTRATED PARTS BREAKDOWN Variable Manually Controlled Roy...

Page 29: ...102779 03 Outlet Burner Tube 1 10 099056 26 Burner Orifice Injector 1 11 102843 01 Burner Clip 1 12 102980 01 Burner 1 13 102568 07 Control Valve 1 14 098508 01 Valve Retainer Nut 1 15 098354 01 Contr...

Page 30: ...LOG HEATER CGS2718N CGS3124N CLD3018N CLD3924NT and CCL3930NT A ILLUSTRATED PARTS BREAKDOWN Thermostatically Controlled Royal English Oak Model CLD3924NT 12 2 1 3 4 18 16 17 20 10 9 5 11 23 7 6 19 8...

Page 31: ...urner Tube 1 9 099056 16 Burner Orifice Injector 1 10 102843 01 Burner Clip 1 11 102772 01 Burner 1 12 101329 20 Thermostat Gas Valve Assembly 1 13 102979 01 Thermostat Bracket 1 14 098544 01 Thermobu...

Page 32: ...R CGS2718N CGS3124N CLD3018N CLD3924NT and CCL3930NT A ILLUSTRATED PARTS BREAKDOWN Thermostatically Controlled Biltmore Split Oak Model 26 23 23 23 23 10 8 9 13 14 15 4 5 1 2 11 12 19 21 21 24 6 7 3 2...

Page 33: ...81 01 Inlet Tube 1 12 102983 01 102983 01 Outlet Burner Tube 1 13 099056 16 099056 16 Burner Orifice Injector 1 14 102843 01 102843 01 Burner Clip 1 15 102772 01 102772 01 Burner 1 16 101329 20 101329...

Page 34: ...lated to repairing a defective heater will be the responsibility of the owner TOTHEFULLEXTENTALLOWEDBYTHELAWOFTHEJURISDICTIONTHATGOVERNSTHESALEOFTHEPRODUCT THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL O...

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