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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
justment, alteration, service, or main-
manual is not followed exactly, a fire or
tenance can cause injury or property
explosion may result causing property
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UNVENTED NATURAL GAS LOG HEATER 2. If you smell gas 10. Do not allow fans to blow directly into SAFETY • shut off gas supply the fireplace. Avoid any drafts that al- INFORMATION • do not try to light any appliance ter burner flame patterns. Ceiling fans • do not touch any electrical switch; do can create drafts that alter burner flame not use any phone in your building patterns. Altered burner patterns can WARNINGS • immediately call your gas supplier cause sooting. IMPORTANT: Read this owner’s
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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. This heater Rear Log (#1) is designed for vent-free operation with flue damper closed. It has been tested and ap- proved to ANS Z21.11.2 standard for unvented heaters. State and local codes in some areas prohibit the use of vent-free h
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UNVENTED NATURAL GAS LOG HEATER Unusually Tight Construction Confined and Unconfined Space AIR FOR The air that leaks around doors and win- The National Fuel Gas Code (ANS Z223.1, COMBUSTION AND dows may provide enough fresh air for 1992 Section 5.3) defines a confined space VENTILATION combustion and ventilation. However, in as a space whose volume is less than 50 3 buildings of unusually tight construction, cubic feet per 1,000 Btu per hour (4.8 m per you must provide additional fresh air. kw)
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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. 1. Determine the volume of the space (length x width x height). Length x Width x Height = cu. ft. (volume of spa
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UNVENTED NATURAL GAS LOG HEATER AIR FOR COMBUSTION AND 12" VENTILATION Continued Ventilation Ventilation Grills Grills VENTILATION AIR Into Adjoining Room, Into Adjoining Or Option 2 Room, Remove Ventilation Air From Inside Option 1 Door into Building Adjoining This fresh air would come from an adjoining Room, unconfined space. When ventilating to an Option adjoining unconfined space, you must pro- 3 vide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on
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OWNER’S MANUAL INSTALLATION AND INSTALLATION 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. If you can, pro- Clamp Accessory for Vented mary heating system. Do not in- vide greater clearances from Operation, page 10). stall this heater
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UNVENTED NATURAL GAS LOG HEATER If Using Mantel INSTALLATION You must have noncombustible material(s) Continued 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. sheet metal, you must have noncombustible If so, you must always run heater material behind it. Noncombustible mate- with chimney flue damper open. rial must extend at least 8 inches up (for all
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OWNER’S MANUAL Mantel Shelf INSTALLATION 10" Continued Underside of 8" Mantel Shelf 6" MANTEL CLEARANCES 1 2 /2" In addition to meeting noncombustible ma- terial clearances, you must also meet re- All minimum distances are quired clearances between fireplace open- in inches ing and mantel shelf. If you do not meet the Minimum Non- minimum clearances listed in Figure 6, you (A) Combustible Log Set Material will need a hood. 1 1 12" 20" 24 /2" 27 /2" 30" 24"/30" Models 3 1 8" 14" 16 /4" 18 /2"
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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. Damper Damper If your heater is a manually-controlled model, you may use this heater as a vented product. There are three reasons for operat- ing your heater in the vented mode. 1. The fir
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OWNER’S MANUAL CONNECTING TO GAS INSTALLATION 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. Drill holes at marked locations using to gas supply. Follow all local trap in supply line as shown in Figure 13. 3/16" drill bit. Drill at a 45° angle. codes. Locate sediment trap where it is within 6. Attach ba
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UNVENTED NATURAL GAS LOG HEATER 5. Correct all leaks at once. Pressure Testing Heater Gas INSTALLATION Connections 6. Light heater (see Operating Heater, Continued pages 14 and 15 [Thermostat-Con- 1. Open manual shutoff valve (see Fig- trolled Models] or pages 15 and 16 ure 14). CHECKING GAS [Variable Manually-Controlled Mod- 2. Open main gas valve located on or near CONNECTIONS els]). Check all other internal joints for gas meter. leaks. WARNING: Test all gas pip- 3. Make sure control knob of
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4 4 3 2 OWNER’S MANUAL Rear Log (#1) INSTALLATION 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 heater base assembly. The data plates contain important warranty Top Log (#4) information. Figure 16 - Installing Rear Log
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UNVENTED NATURAL GAS LOG HEATER 4. Wait five (5) minutes to clear out any LIGHTING OPERATING 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 • If fireplace has glass doors, to the next step. Models never operate this heater with 5. Turn control knob counterclockwise glass doors closed. If you oper- FOR YOUR SAFETY to the PILOT position. ate heater wi
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OWNER’S MANUAL Variable Manually-Controlled LIGHTING OPERATING 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 heat buildup inside fireplace will low these instructions exactly, a 1. Turn control knob clockwise cause glass to burst. Also if fire or explosion
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UNVENTED NATURAL GAS LOG HEATER VARIABLE CONTROL OPERATING 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 4. Wait five (5) minutes to clear out any patterns often. between high and low by simply turning gas. Then smell for gas, including the control knob until that setting is at- PILOT FLAME PATTERN near the floor. If you smell gas, tained. Even the lowest setting provides
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OWNER’S MANUAL 4. Check the injector holder located at the INSPECTING CLEANING AND 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 5. Blow air into the primary air holes on WARNING: Turn off heater FRONT BURNER FLAME the injector holder. and let cool before cleaning. 6. In case any large clumps of dust have PATTERN now been pushed into the burner repeat Figure 26 shows correct fr
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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. site at www.desatech.com. repair heater. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY
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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. Contact local propane/LP gas company 3. Mislocated crossover tube 3. Contact qualified service person 4. Burner orifice(s) diameter is too small 4. Replace burner orifice(s) Delayed ignition of one or both burn
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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. • 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. IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning supplies, paint, pai
