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UNVENTED (VENT-FREE)
NATURAL GAS LOG HEATER
Variably Control Models Also Designed Certified as Vented Decorative Appliance)
This appliance may be installed in an aftermarket* manufactured (mobile) home,
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
OWNER'S OPERATION AND INSTALLATION MANUAL
CG3324NT, CG3630NT, CG2618NV, CG3324NV, and CG3630NV
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 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.
where not prohibited by state or local codes.
Save this manual for future reference.
LO
PILOT
OFF
HI
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 con-
sult 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, a U.L. listed manufactured
solid fuel burning fireplace or an AGA
design certified vent-free firebox listed
for use with these gas log models.
WARNING: This is an unvented gas-
fired heater. It uses air (oxygen) from
the room in which it is installed. Provi-
sions for adequate combustion and ven-
tilation air must be provided. Refer to
"Air for Combustion and Ventilation"
section in this manual.
®
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Related Manuals for Comfort Glow CG3324NT
Summary of Contents for Comfort Glow CG3324NT
- Page 1 * Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer OWNER’S OPERATION AND INSTALLATION MANUAL ® PILOT CG3324NT, CG3630NT, CG2618NV, CG3324NV, and CG3630NV Thermostat and Variably-Controlled Models WARNING: Improper installation, adjust- WARNING: If the information in this...
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Page 2: Table Of Contents
CONTENTS SECTION PAGE Safety Information ................... 2 Product Identification ................4 Local Codes ..................... 4 Unpacking ....................4 Product Features ..................4 Air for Combustion and Ventilation ............5 Installing ....................8 Check Gas Type ................8 Installation and Clearances (Vent-Free Operation Only) ....9 Installing Damper Clamp Accessory for Vented Operation .... - Page 3 WARNINGS Continued SAFETY WARNING: Any change to this heater or its controls can be dangerous. INFORMATION 1. 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. Continued 2.
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Page 4: Product Identification
Front Log PRODUCT Rear Log IDENTIFICATION Front Burner Left Branch Rear Burner Piezo Ignitor Right Branch Base Assembly Control Knob Figure 1 - Vent-Free Gas Log Heater Install and use heater with care. Follow all local codes. In the absence of local LOCAL CODES codes, use the latest edition of The National Fuel Gas Code ANSI Z223, also known as NFPA 54*. -
Page 5: Air For Combustion And Ventilation
AIR FOR WARNING WARNING ICON G 001 COMBUSTION This heater shall not be installed in a confined space unless provisions are provided for adequate combustion and ventilation air. Read the following instructions to insure proper fresh air for VENTILATION this and other fuel-burning appliances in your home. Today’s homes are built more energy efficient than ever. - Page 6 DETERMINING AIR FLOW FOR HEATER LOCATION AIR FOR Determining if You Have a Confined or Unconfined Space COMBUSTION Use this work sheet 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 VENTILATION doorless passageways or ventilation grills between the rooms.
- Page 7 AIR FOR WARNING WARNING ICON G 001 COMBUSTION If the area in which the heater may be operated is smaller than that defined as an unconfined space, provide adequate combus- tion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1, 1992, Section 5.3.
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Page 8: Installing
INSTALLING NOTICE A qualified service person must install heater. Follow all local codes. NOTICE State or local codes may only allow operation of this appliance in a vented configuration. Check your state or local codes. WARNING Before installing in a solid fuel burning fireplace, the chimney flue and firebox must be cleaned of soot, creosote, ashes and loose paint by a qualified chimney cleaner. -
Page 9: Installation And Clearances (Vent-Free Operation Only)
INSTALLATION AND CLEARANCES (Vent-Free Operation Only) INSTALLING Continued WARNING Maintain the minimum clearances. If you can, provide greater clear- ances from floor, ceiling, and adjoining wall. MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE MATERIALS Log Size Side Wall Ceiling Floor 18", 24", 30" 16"... - Page 10 INSTALLING NOTICE Manual control heaters may be used as a vented Continued product. If so, you must always run heater with chimney flue damper open. If running heater with damper open, non-combustible material above fireplace opening is not needed. Go to Installing Damper Clamp Accessory for Vented Operation, page 13.
- Page 11 Minimum Non Combustible Material Clearances INSTALLING If Using Mantel Continued You must have non combustible material(s) above the fireplace opening. Non combustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have non combustible material behind it. Non combustible material must extend at least 8 inches up (for all models).
- Page 12 Mantel Shelf INSTALLING 12" Underside of 10" Mantel Shelf Continued 8" 6" " All minimum distances are in inches Minimum Non- Combustible Log Sets Material 8" 12" 15" 18" 20" 18", 24", Min. & 30" Models Top of Fireplace Opening Hood Distances to (GA6050, GA6052)
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Page 13: Installing Damper Clamp Accessory For Vented Operation
INSTALLING DAMPER CLAMP ACCESSORY FOR INSTALLING VENTED OPERATION Continued Note: When used as a vented heater, appliance must be installed only in a solid- fuel burning fireplace with a working flue and constructed of non combustible material. If your heater is a manually controlled model, you may use this heater as a vented product. -
Page 14: Installing Heater Base Assembly
INSTALLING HEATER BASE ASSEMBLY INSTALLING WARNING Continued WARNING ICON G 001 You must secure this heater to fireplace floor. If not, heater will move when you adjust controls. Moving heater may cause a gas leak. WARNING WARNING ICON G 001 If installing in a sunken fireplace, special care is needed. - Page 15 INSTALLING Heater Gas Continued Regulator Flexible Gas Hose (if allowed by local codes) Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator Masonry Screw Mounting Bracket Figure 12 - Attaching Mounting Brackets to Heater 101991...
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Page 16: Connecting To Gas Supply
CONNECTING TO GAS SUPPLY INSTALLING Continued NOTICE A qualified service person must connect heater to gas supply. Follow all local codes. Installation Items Needed Before installing heater, make sure you have the items listed below. • piping (check local codes) •... -
Page 17: Checking Gas Connections
INSTALLING CAUTION Continued Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings. A.G.A. Design-Certified Manual Shutoff Valve From With 1/8" NPT Tap* Approved Flexible Gas Meter Gas Hose (if allowed (5" W.C.** to by local codes) 10.5"... - Page 18 3. Pressurize supply piping system by either using compressed air or opening main gas INSTALLING valve located on or near gas meter. 4. Check all joints of gas supply piping system. Apply mixture of liquid soap and water to Continued gas joints.
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Page 19: Installing Logs
INSTALLING LOGS INSTALLING Continued 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. Each log is marked with a number. These numbers will help you identify the log when installing. -
Page 20: Operating Heater
OPERATING FOR YOUR SAFETY READ BEFORE LIGHTING HEATER WARNING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly. -
Page 21: To Turn Off Gas To Appliance
5. Turn control knob counterclockwise to the PILOT position. Press in OPERATING control knob for five (5) seconds (see Page 20). HEATER Note: You may be running this heater for the first time after hooking up to gas supply. If so, the control knob may need to be pressed in for 30 seconds or less. Continued This will allow air to bleed from the gas system. -
Page 22: Inspecting Burners
Check pilot flame pattern and burner flame patterns often. INSPECTING PILOT FLAME PATTERN BURNERS Figure 21 shows a correct pilot flame pattern. Figure 22 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. -
Page 23: Cleaning And Maintenance
CLEANING WARNING Turn off heater and let cool before cleaning. MAINTENANCE CAUTION You must keep control areas, burners, and circulating air passage- ways of heater clean. Inspect these areas 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. - Page 24 OBSERVED POSSIBLE TROUBLE- PROBLEM CAUSE REMEDY SHOOTING When ignitor button 1. Gas supply turned off or 1. Turn on gas supply or Continued is pressed, there is manual shutoff valve open manual shutoff spark at ODS/pilot closed valve but no ignition 2.
- Page 25 OBSERVED POSSIBLE TROUBLE- PROBLEM CAUSE REMEDY SHOOTING One or both burners 1. Burner orifice(s) 1. Clean burner(s) (see Continued do not light after clogged Cleaning and Mainte- ODS/pilot is lit nance, page 23) or replace burner orifice(s) 2. Inlet gas pressure is 2.
- Page 26 TROUBLE- WARNING SHOOTING If you smell gas • Shut off gas supply. Continued • 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.
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Page 27: Optional Positioning Of Thermostat Sensing Bulb
If your log set cycles to pilot, but the room temperature drops to a lower than OPTIONAL ideal comfort level before the log set comes back on, you may want to reposi- POSITIONING tion the thermostat sensing bulb. OF THERMOSTAT The thermostat sensing bulb is located on the gas valve assembly. - Page 28 Thermostat OPTIONAL Sensing Bulb POSITIONING OF THERMOSTAT Adhesive-backed Mounting Clip SENSING BULB For Masonry and Figure 28 - Locating Thermostat Sensing Bulb on Masonry Fireplace Factory-built Metal Fireplace If you have a factory-built metal fireplace, see Figure 29 for location. Continued Thermostat Sensing Bulb...
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Page 29: Technical Service
You may have further questions about installation, operation, or troubleshooting. TECHNICAL If so, contact DESA International’s Technical Service Department at SERVICE 1-800-DESA LOG (1-800-337-2564). CG3324NT CG3630NT SPECIFICATIONS B.T.U (Variable) 20,000/33,000 21,500/36,000 Type Gas Natural Gas Only Natural Gas Only Ignition... -
Page 30: Replacement Parts
Note: Use only original replacement parts. This will protect your warranty cover- REPLACEMENT age for parts replaced under warranty. PARTS Parts Under Warranty Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA International’s Technical Service Department at 1-800-323-5190. -
Page 31: Accessories
Purchase these heater accessories from your local dealer. If they can not supply ACCESSORIES these accessories, call DESA International’s Parts Department at 1-800-972-7879 for information. You can also write to the address listed on the back page of this manual. MANUAL SHUTOFF VALVE - GA5010 For all models. -
Page 32: Illustrated Parts Lists
ILLUSTRATED PARTS BREAK- DOWN Variably Controlled Models 29-1 29-2 101991... -
Page 33: Parts List
This list contains replaceable parts used in your heater. When ordering parts, follow PARTS LIST the instructions listed under Replacement Parts on page 30 of this manual. Variably Controlled Models PART NUMBER FOR CG2618NV CG3324NV CG3630NV DESCRIPTION QTY. 102230-01 102230-02 102230-03 Front Log (#1) 102231-01... - Page 34 ILLUSTRATED PARTS BREAK- DOWN Thermostat- Controlled Models 101991...
- Page 35 This list contains replaceable parts used in your heater. When ordering parts, follow PARTS LIST the instructions listed under Replacement Parts on page 30 of this manual. Thermostat- Controlled Models PART NUMBER FOR CG3324NT CG3630NT DESCRIPTION QTY. 102230-02 102230-03 Front Log (#1)
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Page 36: Warranty Information
WARRANTY INFORMATION KEEP THIS WARRANTY 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 written warranty.
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