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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 build-
ing.

• Immediately 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.

— Installation and service must be per-

formed by a qualified installer, service
agency, or the gas supplier.

WARNING: Improper installation, adjust-
ment, alteration, service, or maintenance
can cause injury or property damage.
Refer to this manual for correct installa-
tion and operational procedures. For
assistance or additional information
consult a qualified installer, service
agency, or the gas supplier.

WARNING: This gas log set is for instal-
lation in a masonry solid fuel burning
fireplace, U.L. listed manufactured solid
fuel burning fireplace, or an AGA de-
sign cerified vent-free firebox listed for
use with these gas log heaters.

WARNING: This is an unvented gas-fired
heater. It uses air (oxygen) from the room
in which it is installed. Provisions for ad-
equate combustion and ventilation air must
be provided. Refer to 

Air for Combustion

and Ventilation section in this manual.

18" and 24"

Variable

Manually-

Controlled

Models

CGS2718N
CGS3124N

®

 YELLOW FLAME DESIGN

UNVENTED (VENT-FREE)

NATURAL GAS LOG HEATER

(Also Designed Certified as Vented Decorative Appliance)

This appliance may be installed in an aftermarket* manufactured (mobile) home, where
not prohibited by state or 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

 

OWNER’S OPERATION AND INSTALLATION MANUAL

Summary of Contents for Comfort Glow CGS2718N

Page 1: ...e or additional information consult a qualified installer service agency or the gas supplier WARNING This gas log set is for instal lation in a masonry solid fuel burning fireplace U L listedmanufacturedsolid fuel burning fireplace or an AGA de sign cerified vent free firebox listed for use with these gas log heaters WARNING Thisisanunventedgas fired heater Itusesair oxygen fromtheroom in which it...

Page 2: ...s Natural gas is odorless An odor making agent is added to the gas The odor helpsyoudetectagasleak However theodoraddedtothegascanfade Gasmaybepresent even though no odor exists Make certain you read and understand all Warnings Keep this manual for reference It is your guide to safe and proper operation of this heater Safety Information continues on next page Safety Information 2 Product Identific...

Page 3: ...d call a qualified service person Note During initial operation slight smoking could occur due to log curing and heater burning manufacturing residues 9 Do not allow fans to blow directly into the fireplace Avoid any drafts that alter burner flame patterns Ceiling fans can create drafts that alter burner flame patterns Altered burner patterns can cause sooting 10 Do not use a blower insert heat ex...

Page 4: ... can operate heater as a vented product by opening flue damper Safety Pilot This heater has a pilot with an Oxygen Depletion Sensor Shutoff System ODS The ODS pilot is a required feature for vent free room heaters The ODS pilot shuts off the heater if there is not enough fresh air Piezo Ignition System This heater has a piezo ignitor This system requires no matches batteries or other sources to li...

Page 5: ...ed in that space Rooms communicating directly with the space in which the appliances are installed through openings not furnished with doors are considered a part of the unconfined space Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them PROVIDING ADEQUATE VENTILATION The following is exerpts from National Fuel Gas Code NFPA 54 ANSI Z223 1 S...

Page 6: ...s heater ___________________ Btu Hr Gas fireplace logs ___________________ Btu Hr Other gas appliances ___________________ Btu Hr Total ___________________ Btu Hr Example Gas water heater 40 000 Btu Hr Vent free heater 31 500 Btu Hr Total 71 500 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...

Page 7: ...on for required size of ventilation grills or ducts WARNING Rework worksheet adding the space of the adjoining unconfined space The combined spaces must have enough fresh air to supply all appliances in both spaces Figure 3 Ventilation Air from Outdoors Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts You must provide two perma nent openings one within 12 ...

Page 8: ...utdoorslocatedonfloororwall of fireplace If not drafting may cause pilot outage or sooting Use a heat resistant sealant Do not seal chimney flue damper CAUTION This heater creates warm air currents These currents move heat to wall surfaces next to heater Installing heater next to vinyl or cloth wall coverings or operating heater where impurities in the air such as tobacco smoke exist may discolor ...

Page 9: ...use with these heaters Minimum Wall and Ceiling Clearances see Figure 4 A Clearances from the side of the fireplace opening to any combustible wall should not be less than 16 inches B Clearances from the top of the fireplace opening to the ceiling should not be less than 42 inches Figure 4 Minimum Clearance to Wall and Ceiling Continued LOG SIZING REQUIREMENTS Log Minimum Firebox Size Size Height ...

Page 10: ...erial behind it Non combustible material must extend at least 8 up for all models If non combus tible material is less than 12 you must install the fireplace hood accessory 24 model only See chart below and Figure 5 for minimum clearances IMPORTANT If you cannot meet these minimum clearances you must operate heater with chimney flue damper open Go to Installing Damper Clamp Accessory for Vented Op...

Page 11: ...ation page 13 Figure 6 Minimum Mantel Clearances Without Using Hood Minimum Non Combustible Material Minimum Non Combustible Material Height Distances to Underside of Mantel Top of Fireplace Opening Underside of Mantel Shelf Mantel Shelf 12 A 20 241 2 271 2 30 All minimum distances are in inches Log Set 24 Model 8 14 163 4 181 2 20 18 Model 2 1 2 6 8 10 If above minimum clearances are not met you ...

Page 12: ...e on the floor level you must maintain the minimum distance of 14 to combustibles see Figure 8 B If combustible materials are less than 14 to the fireplace you must install appliance at least 5 above the combustible flooring see Figure 9 Figure 9 Minimum Fireplace Clearances Above Combustible Flooring If your installation does not meet the above minimum clearances you must operate the logs only wi...

Page 13: ...easonsnumber1or2aboveapplytoyou youmustpermanentlyopenchimneyflue damper Youmustinstallthedamperclampaccessory toorder seeAccessories page 29 This will insure vented operation see Figure 10 The damper clamp will keep damper open Installation instructions are included with clamp accessory See chart below for minimum permanent flue opening you must provide Attach damper clamp so the minimum permanen...

Page 14: ...tions through holes in mounting brackets see Figure 12 page 15 If installing in a brick bottom fireplace mark screw locations in mortar joint of bricks 5 Remove heater base from fireplace 6 Drill holes at marked locations using 3 16 drill bit 7 Attach base assembly to fireplace floor using two masonry screws in hardware package see Figure 12 page 15 8 Connect to gas supply See Connecting To Gas Su...

Page 15: ...tinued Masonry Screw Mounting Bracket Heater Gas Regulator Flexible Gas Hose if allowed by local codes Figure 11 Attaching Flexible Gas Hose to Heater Gas Regulator Fitting Figure 12 Attaching Base Assembly to Fireplace Floor ...

Page 16: ... volume to heater If pipe is too small undue loss of pressure will occur Installation must include a manual shutoff valve union and plugged 1 8 NPT tap Locate NPT tap within reach for test gauge hook up NPT tap must be up stream from heater see Figure 13 page 17 Apply pipe joint sealant lightly to male threads This will prevent excess sealant from going into pipe Excess sealant in pipe could resul...

Page 17: ...imum inlet pressure for purpose of input adjustment INSTALLING Continued WARNING Never use an open flame to check for a leak Apply a mixture of liquid soap and water to all joints Bubbles forming show a leak Correct all leaks at once WARNING Test all gas piping and connections for leaks after installing or servicing Correct all leaks at once CHECKING GAS CONNECTIONS Continued Pressure Testing gas ...

Page 18: ... see Figure 15 Apply mixture of liquid soap and water to gas joints Bubbles forming show a leak 4 Correct all leaks at once Pressure Testing Heater Gas Connections 1 Open manual shutoff valve see Figure 14 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 joints from manual shutoff valve to control valve see Figure 15 Apply mix...

Page 19: ...se pegs into the holes in the grate base behind the burner see Figure 16 2 Locate the notches on the back of the front log 2 Slide these notches over the tabs of the grate base see Figure 17 3 Locate 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 20: ...qualified service technician or gas supplier Force or attempted repair may result in a fire or explosion D Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water LIGHTING INSTRUCTIONS WARNING If fireplace has glass doors never ope...

Page 21: ...s not stay lit 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 22 7 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob Note If pilot goes out repeat steps 3 through 7 Thermocouple Figure 20 Pilot Ignitor Electrode Pilot Burner...

Page 22: ...t Burner Figure 21 Correct Pilot Flame Pattern Pilot Burner Thermocouple Figure 22 Incorrect Pilot Flame Pattern If pilot flame pattern is incorrect as shown in Figure 22 turn heater off see To Turn Off Gas to Appliance page 21 see Troubleshooting pages 23 through 26 MANUAL LIGHTING PROCEDURE 1 Follow steps 1 through 5 under Lighting Instructions pages 20 and 21 2 Depress control knob and light pi...

Page 23: ...mage ODS pilot unit POSSIBLE CAUSE 1 Ignitor electrode not con nected to ignitor cable 2 Ignitor cable pinched or wet 3 Piezo ignitor nut is loose 4 Broken ignitor cable 5 Bad piezo ignitor 6 Ignitor electrode broken 7 Ignitor electrode posi tioned wrong 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 ignito...

Page 24: ...e thermocouple 7 Replace control valve OBSERVED PROBLEM When ignitor button is pressed there is spark at ODS pilot but no ignition ODS pilot lights but flame goes out when control knob is released POSSIBLE CAUSE 1 Gas supply turned off or manual shutoff valve closed 2 Control knob not in PILOT position 3 Control knob not pressed in while in PILOT position 4 Air in gas lines when installed 5 ODS pi...

Page 25: ... will stop after a few hours of operation 1 Refer to Air for Com bustion and Ventilation requirements page 5 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 gas company 3 Observe minimum installation clearances see pages 9 12 4 Clean burner see Cleaning and Maintenance page 23 or replace burner o...

Page 26: ...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 REMEDY 1 This is common with most heaters If noise is excessive contact qualified service person 1 Open window and ventilate room Stop using odor causing products while heater is running 2 Loc...

Page 27: ...zo Piezo Manifold Pressure 3 5 W C 3 5 W C Inlet Gas Pressure in of water Maximum 10 5 10 5 Minimum 5 5 Shipping Weight 27 lbs 29 lbs For the purpose of input adjustment When gas pressure is too low pilot will not stay lit burners will have delayed ignition heater will not produce specified heat When gas quality is bad pilot will not stay lit burners will produce flames and soot heater will backfi...

Page 28: ...lacement parts and accessories Baltimore Electric 1348 Dixwell Avenue Hamden CT 06514 1 800 397 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 1199 1 800 654 8534 Fax 1 800 846 0090 Four Flags Power Products 1115 Stateline Road Niles MI 49120 616 684 26...

Page 29: ...age of this manual MANUAL SHUTOFF VALVE GA5010 For all models Manual shutoff valve with 1 8 NPT tap Fits 1 2 NPT pipe BLACK FIREPLACE HOOD GA6050 For all models Helps deflect heat away from mantel or wall above fireplace BRASS FIREPLACE HOOD GA6052 For all models Helps deflect heat away from mantel or wall above fireplace LAVA ROCK GA6060 For all models Order when additional rock is desired 3 lb b...

Page 30: ...30 102988 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 CGS2718N CGS3124N ...

Page 31: ...02963 01 102773 01 Burner 1 13 102568 07 102568 07 Control Valve 1 14 098508 01 098508 01 Valve Retainer Nut 1 15 098354 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 ODS Pilot 1 20 1 098594 01 098594 01 Ignitor Electrode 1 20 2 098593 01 098593 01 ...

Page 32: ...and all such other costs related to repairing a defective heater will be the responsibility of the owner TOTHEFULLEXTENTALLOWEDBYTHELAWOFTHEJURISDICTIONTHATGOVERNSTHESALEOFTHE PRODUCT THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO TWO 2 YE...

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