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UNVENTED (VENT-FREE)
NATURAL GAS LOG HEATER
VARIABLE MANUALLY-CONTROLLED MODELS ALSO DESIGN-CERTIFIED
OWNER'S OPERATION AND INSTALLATION MANUAL
CGG2618N,
CGG3324N(T), and
CGG3630N
Thermostat and
Variably-Controlled
Models
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 building.
• 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: This is an unvented gas-fired heater. It uses air (oxygen) from the room in
which it is installed. Provisions for adequate combustion and ventilation air must be
provided. Refer to Air for Combustion and Ventilation section, page 4, in this manual.
This appliance may be installed in an aftermarket* manufactured (mobile) home, where not prohibited
by state or local codes.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
103424
AS VENTED DECORATIVE APPLIANCES
Save this manual for future reference.
1
OWNER'S MANUAL
WARNING: Improper installation, ad-
justment, alteration, service, or main-
tenance can cause injury or property
damage. Refer to this manual for cor-
rect installation and operational proce-
dures. For assistance or additional in-
formation consult a qualified installer,
service agency, or the gas supplier.
WARNING: This appliance is for in-
stallation only in a solid-fuel burning
masonry or UL127 factory-built fire-
place, or in an approved ventless fire-
box. It is design-certified for these
installations in accordance with ANS
Z21.11.2.
Exception: Do not install this appli-
ance in a factory-built fireplace that
includes instructions stating it has
not been tested or should not be used
with unvented gas logs.
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Related Manuals for Comfort Glow CGG2618N
Summary of Contents for Comfort Glow CGG2618N
- Page 1 OWNER’S MANUAL UNVENTED (VENT-FREE) NATURAL GAS LOG HEATER VARIABLE MANUALLY-CONTROLLED MODELS ALSO DESIGN-CERTIFIED AS VENTED DECORATIVE APPLIANCES OWNER’S OPERATION AND INSTALLATION MANUAL CGG2618N, CGG3324N(T), and CGG3630N Thermostat and Variably-Controlled Models WARNING: Improper installation, ad- WARNING: If the information in this...
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Page 2: Safety Information
UNVENTED NATURAL GAS LOG HEATER SAFETY If you smell gas 10. Do not allow fans to blow directly into • shut off gas supply the fireplace. Avoid any drafts that al- INFORMATION • do not try to light any appliance ter burner flame patterns. -
Page 3: Product Identification
OWNER’S MANUAL PRODUCT PRODUCT IDENTIFICATION FEATURES OPERATION Bottom Mid This heater is clean burning. It requires no Log (#2) Top Log (#4) outside venting. There is no heat loss out a vent or up a chimney. Heat is generated by realistic, dancing yellow flames. -
Page 4: Air For Combustion And Ventilation
UNVENTED NATURAL GAS LOG HEATER AIR FOR Unusually Tight Construction Confined and Unconfined Space COMBUSTION AND The air that leaks around doors and win- The National Fuel Gas Code (ANS Z223.1, dows may provide enough fresh air for 1992 Section 5.3) defines a confined space VENTILATION combustion and ventilation. -
Page 5: Determining Fresh-Air Flow For Heater Location
OWNER’S MANUAL AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this worksheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms. -
Page 6: Ventilation Air
UNVENTED NATURAL GAS LOG HEATER AIR FOR COMBUSTION AND 12" VENTILATION Continued Ventilation Ventilation Grills Grills VENTILATION AIR Into Adjoining Room, Into Adjoining Option 2 Room, Ventilation Air From Inside Remove Option 1 Door into Building Adjoining This fresh air would come from an adjoining Room, unconfined space. -
Page 7: Check Gas Type
OWNER’S MANUAL INSTALLATION INSTALLATION AND WARNING: Never install the CLEARANCES (Vent-Free heater Operation Only) • in a bedroom or bathroom un- NOTICE: This heater is intended less installed as a vented ap- for use as supplemental heat. Use WARNING: Maintain the mini- pliance (see Installing Damper this heater along with your pri- mum clearances. - Page 8 UNVENTED NATURAL GAS LOG HEATER If Using Mantel INSTALLATION Continued You must have noncombustible material(s) above the fireplace opening. Noncombus- tible materials (such as slate, marble, tile, NOTICE: Manual control heaters etc.) must be at least 1/2 inch thick. With may be used as a vented product.
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Page 9: Mantel Clearances
OWNER’S MANUAL INSTALLATION Mantel Shelf Continued 10" Underside of 8" Mantel Shelf 6" MANTEL CLEARANCES 1 /2 " In addition to meeting noncombustible ma- terial clearances, you must also meet re- All minimum quired clearances between fireplace open- distances are in inches ing and mantel shelf. -
Page 10: Installing Damper Clamp Accessory For Vented Operation
UNVENTED NATURAL GAS LOG HEATER INSTALLATION Continued Damper Damper Clamp INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION Damper Note: When used as a vented heater, appli- Clamp ance must be installed only in a solid-fuel burning fireplace with a working flue and constructed of noncombustible material. -
Page 11: Connecting To Gas Supply
OWNER’S MANUAL INSTALLATION CONNECTING TO GAS CAUTION: Use pipe joint seal- SUPPLY Continued ant that is resistant to liquid pe- troleum (LP) gas. WARNING: A qualified ser- 4. Remove heater base from fireplace. vice person must connect heater We recommend that you install a sediment 5. -
Page 12: Checking Gas Connections
UNVENTED NATURAL GAS LOG HEATER INSTALLATION Pressure Testing Heater Gas Correct all leaks at once. Connections Light heater (see Operating Heater, Continued pages 14 and 15 [Thermostat-Con- Open manual shutoff valve (see Fig- trolled Models] or pages 15 and 16 CHECKING GAS ure 14). -
Page 13: Installing Logs
OWNER’S MANUAL INSTALLATION Rear Log (#1) Continued INSTALLING LOGS WARNING: Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this heater may result in property damage or personal injury. Front Log (#3) CAUTION: Do not remove the Figure 18 - Installing Front Log metal data plates attached to the... -
Page 14: Operating Heater
UNVENTED NATURAL GAS LOG HEATER OPERATING LIGHTING Wait five (5) minutes to clear out any gas. Then smell for gas, including INSTRUCTIONS HEATER near the floor. If you smell gas, STOP! Follow “B” in the safety in- WARNING: Thermostat-Controlled formation. If you don’t smell gas, go •... - Page 15 OWNER’S MANUAL OPERATING Variable Manually-Controlled LIGHTING Models INSTRUCTIONS HEATER FOR YOUR Continued WARNING: SAFETY READ • If fireplace has glass doors, TO TURN OFF GAS BEFORE LIGHTING never operate this heater with TO APPLIANCE glass doors closed. If you oper- ate heater with doors closed, WARNING: If you do not fol- Shutting Off Heater...
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Page 16: Inspecting Burners
UNVENTED NATURAL GAS LOG HEATER OPERATING VARIABLE CONTROL INSPECTING OPERATION HEATER BURNERS The variable control valve can be set to Continued Check pilot flame pattern and burner flame any heat setting and flame height desired Wait five (5) minutes to clear out any patterns often. -
Page 17: Cleaning And Maintenance
OWNER’S MANUAL INSPECTING CLEANING AND Check the injector holder located at the end of the burner tube again. Remove any BURNERS MAINTENANCE large particles of dust, dirt, lint, or pet hairs with a soft cloth or vacuum cleaner nozzle. Continued Blow air into the primary air holes on WARNING: Turn off heater FRONT BURNER FLAME... -
Page 18: Troubleshooting
UNVENTED NATURAL GAS LOG HEATER TROUBLESHOOTING WARNING: Turn off and un- CAUTION: Never use a wire, plug heater and let cool before needle, or similar object to clean Note: For additional help, visit DESA servicing. Only a qualified ser- ODS/pilot. This can damage ODS/ International’s Technical Service web vice person should service and pilot unit. - Page 19 OWNER’S MANUAL TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY One or both burners do not light after ODS/ 1. Burner orifice(s) clogged 1. Clean burner(s) (see Cleaning and pilot is lit Maintenance, page 17) or replace burner orifice(s) 2. Inlet gas pressure is too low 2.
- Page 20 UNVENTED NATURAL GAS LOG HEATER 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. •...
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Page 21: Optional Positioning Of Thermostat Sensing Bulb
OWNER’S MANUAL OPTIONAL Thermostat Sensing Bulb 4. The mounting clip must be a minimum of 3" from bottom of fireplace to pre- POSITIONING OF vent crimping of capillary. Once you have decided on a location, clean the THERMOSTAT area thoroughly. Remove the paper SENSING BULB backing from the adhesive on back of mounting clip. -
Page 22: Specifications
UNVENTED NATURAL GAS LOG HEATER SPECIFICATIONS Model CGG3324NT CGG2618N CGG3324N CGG3630N Btu (Variable) 20,000/33,000 16,000/26,000 20,000/33,000 21,500/36,000 Type Gas Natural Gas Only Natural Gas Only Natural Gas Only Natural Gas Only Ignition Piezo Piezo Piezo Piezo Pressure 3.4" W.C. 3.4" W.C. -
Page 23: Replacement Parts
OWNER’S MANUAL REPLACEMENT PARTS NOT UNDER When calling DESA International, have ready WARRANTY PARTS • your name Contact authorized dealers of this product. Note: Use only original replacement parts. • your address If they can’t supply original replacement This will protect your warranty coverage for •... -
Page 24: Illustrated Parts Breakdown
UNVENTED NATURAL GAS LOG HEATER ILLUSTRATED PARTS BREAKDOWN Variable Manually-Controlled Models CGG2618N CGG3324N CGG3630N 27-1 27-2 103424... -
Page 25: Parts List
OWNER’S MANUAL PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 23 of this manual. Variable Manually-Controlled Models CGG2618N CGG3324N CGG3630N PART NUMBER FOR CGG2618N CGG3324N... - Page 26 UNVENTED NATURAL GAS LOG HEATER ILLUSTRATED PARTS BREAKDOWN Thermostat-Controlled Model CGG3324NT 7-1 7-2 10-2 10-1 103424...
- Page 27 OWNER’S MANUAL PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 23 of this manual. Thermostat-Controlled Model CGG3324NT PART NUMBER DESCRIPTION QTY. 103682-04 Rear Log (#1) 103682-02 Bottom Middle Log (#2) 103682-01...
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Page 28: Warranty Information
We make no other warranty, expressed or implied. LIMITED WARRANTY COMFORT GLOW VENT-FREE NATURAL GAS LOG HEATERS DESA International warrants this product to be free from defects in materials and components for two (2) years from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions.
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