Desa Tech CGS2718PA, CGS2718NA, CGS3124PA, CGS3124NA, SGS3124PA, SGS3124NA,CLD3018PTA, CLD3018NTA, CLD3924NTB, CLD3924PTB Installation
Desa owner's operation and installation manual royal english oak and winchester oak unvented (vent-free) gas log heater cgs2718pa, cgs2718na, cgs3124pa, cgs3124na sgs3124pa, sgs3124na 18" and 24".
Summary of Contents
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Page 1
ROYAL ENGLISH OAK AND WINCHESTER OAK UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL Patent Pending 18" AND 24" VARIABLE MANUALLY-CONTROLLED MODELS CGS2718PA, CGS2718NA, CGS3124PA, CGS3124NA SGS3124PA, SGS3124NA 18" AND 24" THERMOSTATICALLY-CONTROLLED MODELS CLD3018PTA, CLD3018NTA CLD3924PTB, CLD3924NTB Variable Manually-Controlled Models Also Design-Certified as WARNING: If the information in this manual is not fol- lowed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
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Page 2: Table Of Contents
WARNING: Improper installation, adjustment, altera- tion, service or maintenance can cause injury or prop- erty damage. Refer to this manual for correct installation and operational procedures. For assistance or addi- tional information consult a qualified installer, service agency or the gas supplier. WARNING: This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built fire- place or in a listed ventless firebox enclosure.
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Page 3: Safety Information
SAFETY INFORMATION WARNING: This product con- tains and/or generates chemicals known to the State of California to cause cancer or birth defects or other reproductive harm. IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, op- erate or service this fireplace. Improper use of this fireplace can cause serious injury or death from burns, fire, explo-...
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Page 4
SAFETY INFORMATION Continued 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. 2. Do not place propane/LP supply tank(s) in- side any structure. Locate propane/LP supply tank(s) outdoors (propane/LP units only).
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Page 5: Unpacking, Product Features
LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of local codes, use the lat- est edition of The National Fuel Gas Code ANSI Z223/NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National Fire Protection Association, Inc.
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Page 6
Example: 2,560 cu. ft. (volume of space) x 20 = 51,200 (maximum Btu/Hr the space can support) Add the Btu/Hr of all fuel burning appliances in the space. Vent-free fireplace Gas water heater* Gas furnace Vented gas heater Gas fireplace logs Other gas appliances* + __________ Btu/Hr Total * Do not include direct-vent gas appliances.
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Page 7
AIR FOR COMBUSTION AND VENTILATION Continued Example: Gas water heater Vent-free fireplace + __________ Btu/Hr Total = __________ Btu/Hr 4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used. _________Btu/Hr (maximum the space can support)
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Page 8: Installation
INSTALLATION NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your pri- mary heat source. If you have a central heating system, you may run system’s circulating blower while using heater.
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Page 9
INSTALLATION Continued MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE MATERIALS Log Size Side Wall 18", 24" 16" LOG SIZING REQUIREMENTS Minimum Firebox Size Size Height Depth Width 18" 17" 14" 24" 17" 14" *Measured at 14" Depth Carefully follow the instructions below. This will ensure safe installation into a masonry, UL127- listed manufactured fireplace or certified vent-free firebox.
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Page 10
INSTALLATION Continued 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 Operation, page 12. If Using Mantel You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick.
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Page 11
NOTICE: If your installation does not meet the minimum clear- ances shown, you must do one of the following: • operate the logs only with the flue damper open • raise the mantel to an accept- able height • remove the mantel Minimum Non- Combustible Material...
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Page 12
INSTALLATION Continued INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION 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 noncombustible material. If your heater is a manually-controlled model, you may use this heater as a vented product.
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Page 13
INSTALLATION Continued IMPORTANT: Make sure the heater burners are level. If heater is not level, heater will not work properly. For thermostat models, avoid damage to thermostat bulb. Avoid nicks or sharp bends in thermostat bulb wire. Keep thermostat bulb in mounting bracket until ready to mount base to floor.
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Page 14
INSTALLATION Continued Installation Items Needed Before installing heater, make sure you have the items listed below. • external regulator (supplied by installer) • piping (check local codes) • sealant (resistant to propane/LP gas) • equipment shutoff valve * • test gauge connection * •...
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Page 15
INSTALLATION Continued CHECKING GAS CONNECTIONS WARNING: Test all gas piping and connections , internal and external to unit, for leaks after installing or servicing. Correct all leaks at once. WARNING: Never use an open flame to check for a leak. Apply a commercial leak de- tection solution to all joints.
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Page 16
INSTALLATION Continued Pressure Testing Heater Gas Connections 1. Open equipment shutoff valve (see Figure 15, page 15). 2. Open main gas valve located on or near gas meter for natural gas or open propane/LP supply tank valve. 3. Make sure control knob of heater is in the OFF position.
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Page 17
Crossover Log (#3) Pegs Figure 20 - Installing Crossover Logs 113101-01C www.desatech.com...
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Page 18: Operating Heater
INSTALLATION Continued 4. Place crossover log (#5) onto the pin (left) on middle log (#1) and onto the pin on front left log (#3) (see Figure 24). 5. Place crossover log #6 onto the pin (right) on middle log (#1) and onto the pin on back log (#2) (see Figure 24).
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Page 19
OPERATING HEATER Continued LIGHTING INSTRUCTIONS WARNING: • If fireplace has glass doors, never operate this heater with glass doors closed. If you op- erate heater with doors closed, heat buildup inside fireplace will cause glass to burst. Make sure there are no obstructions across openings of fireplace.
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Page 20
Ignitor Electrode Figure 27 - Pilot VARIABLE CONTROL OPERATION The variable control valve can be set to any heat setting and flame height desired, by simply turning the control knob until that setting is attained. Even the lowest setting provides re- alistic, dancing yellow flames.
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Page 21
OPERATING HEATER Continued LIGHTING INSTRUCTIONS WARNING • If fireplace has glass doors, never operate this heater with glass doors closed. If you op- erate heater with doors closed, heat buildup inside fireplace will cause glass to burst. Make sure there are no obstructions across openings of fireplace.
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Page 22: Inspecting Burners
OPERATING HEATER Continued TO TURN OFF GAS TO APPLIANCE Shutting Off Heater Turn control knob clockwise position. Shutting Off Burners Only (pilot stays lit) Turn control knob clockwise PILOT position. THERMOSTAT CONTROL OPERATION The thermostat control knob can be set to any comfort level between HI and LO.
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Page 23: Cleaning And Maintenance
CLEANING AND MAINTENANCE WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burner and circu- lating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a quali- fied service person.
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Page 24: Technical Service, Service Hints, Replacement Parts
If so, contact DESA Heating Productsʼ Technical Service Department at 1-866-672-6040. When calling please have your model and serial numbers of your heater ready. You can also visit DESA Heating Productsʼ techni- cal service web site at www.desatech.com SERVICE HINTS When Gas Pressure Is Too Low •...
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Page 25: Troubleshooting
WARNING: Turn off and unplug heater and let cool before servicing. Only a qualified service person should service and repair heater. CAUTION: Never use a wire, needle or similar object to clean ODS/pilot. This can damage ODS/pilot unit. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM When ignitor button is pressed, there is no spark at ODS/pilot...
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Page 26
OBSERVED PROBLEM ODS/pilot lights but flame goes out when control knob is re- leased Burner does light after ODS/pi- lot is lit Delayed ignition of burner Burner backfiring during com- bustion TROUBLESHOOTING Continued POSSIBLE CAUSE 1. Control knob not fully pressed 2.
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Page 27
OBSERVED PROBLEM Slight smoke or odor during initial operation Moisture/condensation noticed on windows Heater produces a whistling noise when burner is lit White powder residue forming within burner box or on adjacent walls or furniture Heater produces a clicking/tick- ing noise just after burner is lit or shut off 113101-01C TROUBLESHOOTING...
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Page 28
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. Fol- low the gas supplier’s instructions.
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Page 29: Optional Positioning Of Thermostat Sensing Bulb
OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB FOR MASONRY AND FACTORY- BUILT METAL FIREPLACE If your log set cycles to pilot, but the room tem- perature drops to a lower than ideal comfort level before the log set comes back on, you may want to reposition the thermostat sensing bulb.
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Page 30
OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB Continued 4. The mounting clip must be a minimum of 3" from bottom of fireplace to prevent crimping of capillary. Once you have decided on a location, clean the area thoroughly. Remove the paper backing from the adhesive on back of mounting clip.
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Page 31: Accessories, Parts Central
Purchase these fireplace accessories from your local dealer. If they can not supply these acces- sories, either contact your nearest Parts Central or call DESA Heating Productsʼ Sales Department at 1-866-672-6040 for information. You can also write to the address listed on the back page of this manual.
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Page 32
ILLUSTRATED PARTS BREAKDOWN VARIABLE MANUALLY-CONTROLLED WINCHESTER OAK MODELS CGS2718NA, CGS2718PA CGS3124NA, CGS3124PA SGS3124NA, SGS3124PA www.desatech.com 113101-01C...
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Page 33
VARIABLE MANUALLY-CONTROLLED WINCHESTER OAK MODELS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 24 of this manual. CGS2718N CGS2718P 113571-02 113571-02 113571-01 113571-01 113571-03 113571-03 113571-04 113571-04 102844-01 102844-01 098276-01 098276-01 098867-14 098867-10...
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Page 34
ILLUSTRATED PARTS BREAKDOWN THERMOSTATICALLY-CONTROLLED ROYAL ENGLISH OAK MODELS CLD3924NTB, CLD3924PTB CLD3018NTA, CLD3018PTA www.desatech.com 113101-01C...
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THERMOSTATICALLY-CONTROLLED ROYAL ENGLISH OAK MODELS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 24 of this manual. CLD3924NTB CLD3924PTB CLD3018NTA CLD3018PTA DESCRIPTION 117230-05 117230-05 117230-04 117230-04 117230-06 117230-06 117230-07 117230-07...
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Page 36
This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to restore this heater to proper operating condition and an allowance for labor when provided by a DESA Heating Products Authorized Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product and/or DESA Heating Products who will provide original factory replacement parts.
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