Desa CGD3924NR Gas Heater User Manual
Contents
1. 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 12 page 16 Apply pipe joint sealant lightly to male threads This will prevent excess sealant from going into pipe Excess sealant in pipe could result in clogged heater valves A CAUTION Use pipe joint sealant that is resistant to liquid petroleum LP gas Install sediment trap in supply line as shown in Figure 12 page 16 Locate sedi ment trap where it is within reach for cleaning Locate sediment trap where trapped matter is not likely to freeze A sediment trap traps moisture and contami nants This keeps them from going into heater controls If sediment trap is not installed or is installed wrong heater may not run properly 103343 INSTALLING Continued A CAUTION 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 With 1 8 NPT Tap From Gas Meter Approved Flexible 5 W C to Gas Hose if allowed 10 5 W C Gas by local codes Pressure Control Sediment Figure 12 Gas Connection Trap Purchase the optional A G A design certified manual shutoff valve from your dealer See Accessories page 29 Minimum inlet pressure for purpose of input adjust2. Note Homeowners generally prefer to operate their heater with the chimney damper closed This will put all the heat into the room However there may be times you will desire the full flames of the Hi heat setting but will find the heat output excessive You can open the chimney damper if you have one fully or partially to release some of the heat WARNING Damper handle will be hot if heater has been running 1 STOP Read the safety information above 2 Make sure manual shutoff valve is fully open 3 Set remote selector switch in the OFF position A WARNING Burners will come on automatically within one minute when the remote selector switch is in the ON position after the pilot is lit Continued 103343 OPERATING HEATER Continued 4 Press in and turn control knob clockwise to the OFF position Flame Control Knob Adjustment Ignitor Button Selector Switch in OFF Position Figure 19 Control Knob and Ignitor Button Location 5 Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Follow B in the safety information above If you don t smell gas go to the next step 6 Press in and turn control knob counterclockwise y to the PILOT position Press in control knob for five 5 seconds see above Note You may be running this heater for the first time after hooking up to gas supply If so the control knob may
3. Length x Width x Height cu ft volume of space Example Space size 20 ft length x 16 ft width x 8 ft ceiling height 2560 cu ft volume of space If additional ventilation to adjoining room is supplied with grills or openings add the volume of these rooms to the total volume of the space 2 Divide the space volume by 50 cubic feet to determine the maximum Btu Hr the space can support volume of space 50 cu ft Maximum Btu Hr the space can support Example 2560 cu ft volume of space 50 cu ft 51 2 or 51 200 maximum Btu Hr the space can support 3 Add the Btu Hr of all fuel burning appliances in the space Vent free heater Btu Hr Gas water heater Btu Hr Gas furnace Btu Hr Vented gas 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 39 000 Btu Hr Total 79 000 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 the space can support with the actual amount of Btu Hr used Btu Hr maximum the space can support Btu Hr actual amount of Btu Hr used Example 51 200 Btu Hr maximum the space can support 79 000 Btu Hr actual amount of Btu Hr used The space in the above example is a confined space because the actual Btu Hr used is more than the maxim
4. NPT tap Fits 1 2 NPT pipe BLACK FIREPLACE HOOD GA6050 Helps deflect heat away from mantel or wall above fireplace BRASS FIREPLACE HOOD GA6052 Helps deflect heat away from mantel or wall above fireplace DAMPER CLAMP GA6080 Permanently opens chimney flue damper for vented operation LAVA ROCK GA6060 Order when additional rock is desired 3 Ib bag 103343 PARTS ILLUSTRATED BREAKDOWN CGD3924NR 103343 p A RTS LIST This list contains replaceable parts used in your heater When ordering parts follow the instructions listed under Replacement Parts on page 28 of this manual FA PART NUMBER DESCRIPTION ow 103008 01 103009 01 103010 01 103011 01 103779 01 098249 01 103342 01 098264 02 102843 01 099056 16 102966 01 102772 01 099387 12 103781 01 103345 01 M11084 38 102775 06CK 098271 07 102445 01 103823 01 104099 01 098304 01 103784 02 103784 01 M12461 26 100609 01 099918 02 ONoOoaBKRWD PARTS AVAILABLE NOT SHOWN 100563 01 103877 01 100565 01 100639 01 101137 02 101416 33 GA6060 Back Log 1 Middle Log 2 Front Log 8 Crossover Log 4 ODS Pilot NG ODS Nut Burner Outlet Tube Male Connector Burner Clip Burner Orifice Injector Upper Bracket Burner Pilot Tube Valve to regulator Gas Control Valve Lower Bracket Screw 8 x 38 Painted Base Assembly Ignitor Cable Piezo lgnitor Remote Set Inc
5. for proper combustion and ventilation Exhaust fans fireplaces clothes dryers and fuel burning appliances draw air from the house to operate You must provide adequate fresh air for these appliances This will insure proper venting of vented fuel burning appliances PROVIDING ADEQUATE VENTILATION The following is exerpts from National Fuel Gas Code NFPA 54 ANSI Z223 1 Section 5 3 Air for Combustion and Ventilation All spaces in homes fall into one of the three following ventilation classifications 1 Unusually Tight Contruction 2 Unconfined Space 3 Confined Space The information on pages 5 through 7 will help you classify your space and provide adequate ventilation Unusually Tight Construction The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation However in buildings of unusually tight construction you must provide additional fresh air Unusually tight construction is defined as construction where a walls and ceilings exposed to the outside atmosphere have a continu ous water vapor retarder with a rating of one perm or less with open ings gasketed or sealed and b weather stripping has been added on openable windows and doors and c caulking or sealants are applied to areas such as joints around window and door frames between sole plates and floors between wall ceiling joints between wall panels at penetrations for plumbing electrical and gas lines and at other
6. from too much moisture See Air for Combustion and Ventilation pages 5 through 7 CHECK GAS TYPE Use only natural gas If your gas supply is not natural gas do not install heater Call dealer where you bought heater for proper type heater 103343 INSTALLING Continued INSTALLATION AND CLEARANCES Vent Free Operation Only AWARNING 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 24 16 42 LOG SIZING REQUIREMENTS Log Minimum Firebox Size Size Height Depth Front Width 24 17 14 26 Carefully follow the instructions below This will ensure safe installation into a masonry or U L listed manufactured fireplace 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 Left and Right Sides Figure 4 Minimum Clearance to Wall and Ceiling Continued E 103343 INSTALLING Continued Minimum Non Combustible Material Clearances If Not Using Mantel Note If using a mantel go to page 11 If not using a mantel follow the informa tion on this page You must have non com
7. minimum clearances are not met you must have a hood Follow minimum clearances shown in Figure 7 when using hood Contnioad 103343 INSTALLING Continued Mantel Shelf Underside of Mantel Shelf All minimum distances are in inches Log Set 8 12 15 18 20 lt 18 24 30 Min Models T E Top of Fireplace paus Opening Distances to Underside of Mantel Minimum Non Combustible Material GA6050 GA6052 Figure 7 Minimum Mantel Clearances When Using Hood If your installation does not meet the above minimum clearances you must e operate the logs only with the flue damper open OR e raise the mantel to an acceptable height OR e remove the mantel Floor Clearances A If installing appliance on the floor level you must maintain the minimum distance of 14 to combustibles see Figure 8 Combustible 14 Material Min __ Snae Material Figure 8 Minimum Fireplace Clearances If Installed at Floor Level 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 Hearth Combustible Material Figure 9 Minimum Fireplace Clearances Above Combustible Flooring Min 103343 INSTALLING Continued INSTALLING HEATER BASE ASSEMBLY A WARNING You must secure this heater to fireplace floor If not heater will move w
8. need to be pressed in for 30 seconds or more This will allow air to bleed from the gas system 7 With control knob pressed in press and release ignitor button This will light pilot The pilot is attached to the front burner If needed keep pressing ignitor button until pilot lights Note If pilot does 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 on page 21 8 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob If control knob does not pop out when released contact a qualified service person or gas supplier for repairs Note If pilot goes out repeat steps 4 through 8 Pilot Burner ee ae Ignitor Electrode Figure 20 Pilot 9 Slightly push in and turn control knob counterclockwise A to the ON position 10 Wait one minute and switch remote selector switch to the ON position to light burners 11 Set flame adjustment knob to any level between HI and LO A CAUTION Do not try to adjust heating levels by using the manual shutoff valve A WARNING Make sure the remote selector switch is in the OFF position when you are away from home for long periods of time Heater will come on automatically with remote selector switch in the ON position 103343 OPERATING HEATER Continued GE TO
9. of this product and or DESA International who will provide original factory replacement parts Failure to use original factory replacement parts voids this warranty The heater MUST be installed by a qualified installer in accordance with all local codes and instructions furnished with the unit This warranty does not apply to parts that are not in original condition because of normal wear and tear or parts that fail or become damaged as aresult of misuse accidents lack of proper maintenance or defects caused by improper installation Travel diagnostic cost labor transportation and any and all such other costs related to repairing a defective heater will be the responsibility of the owner TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE 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 YEARS ON ALL COMPO NENTS FROM THE DATE OF FIRST PURCHASE AND DESA INTERNATIONAL S LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND DESA INTERNATIONAL SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT INCIDENTAL OR CONSE QUENTIAL DAMAGES Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or consequential damages so the above limitation on
10. openings If your home meets all of the three criteria above you must provide addi tional fresh air See Ventilation Air From Outdoors page 7 If your home does not meet all of the three criteria above proceed to page 6 Confined Space and Unconfined Space The National Fuel Gas Code ANSIZ2 123 1 1992 Section 5 3 defines a confined space as a space whose volume is less than 50 cubic feet per 1 000 Btu per hour 4 8 m per kw of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1 000 Btu per hour 4 8 m per kw of the aggregate input rating of all appliances installed in that space Rooms communicating directly with the space in which the appliances are installed through openings not furnished with doors are consid ered a part of the unconfined space Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them Continued 103343 AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space 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 doorless passageways or ventilation grills between the rooms 1 Determine the volume of the space length x width x height
11. switch do not use any phone in your 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 paint remover cigarette smoke cements and glues new carpet or textiles etc create fumes These fumes may mix with combustion air and create odors These odors will disappear over time OBSERVED POSSIBLE PROBLEM CAUSE REMEDY Heater produces a 1 Metal expanding while 1 This is common with clicking ticking noise just after burner is lit or shut off heating or contracting while cooling most heaters If noise is excessive contact qualified service person Heater produces 1 Heater burning vapors 1 Open window and unwanted odors from paint hair spray ventilate room Stop using glues cleaners chemi odor causing products cals new carpet etc while heater is running See IMPORTANT statement above 2 Gas leak See Warning 2 Locate and correct all statement at top of leaks see Checking Gas page Connections page 16 Heater shuts off in use 1 Not enough fresh air is 1 Open window and or door ODS operates available for ventilation 2 Low line pressure 2 Contact local natural gas company 3 ODS pilot is partially 3 Clean ODS pilot see clogged Cleaning and Mainte nance page 23 Gas odor
12. women people with heart or lung disease or anemia those under the influence of alcohol and those at high altitudes Natural Gas Natural gas is odorless An odor making agentis added to the gas The odor helps you detect a gas leak However the odor added to the gas can fade Gas may be present 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 103343 SAFETY INFORMATION Continued WARNING Any change to this heater or its controls can be dangerous 10 1 ay 12 13 Never place any objects on the heater 15 16 17 18 19 20 21 22 This heater needs fresh outside air ventilation to run properly This heater has an oxygen depletion A WARNINGS Continued 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 If you smell gas e shut off gas supply e do not try to light any appliance e do not touch any electrical switch do not use any phone in your building e immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions e if you cannot reach your gas supplier call the fire department This heater shall not be installed in a bedroom or bathroom Never install the
13. 1096 Franklin KY 42134 502 586 1922 1 800 654 8534 Four Flags Power Products 1115 Stateline Road Niles MI 49120 616 684 2697 Parts Only Master Service Center 1184 Wilson NW Walker MI 49504 616 791 4760 1 800 446 1446 Washer Equipment Co 1715 Main Street Kansas City MO 64108 KS MO AR 816 842 3911 East Coast Energy Products 833 Broadway W Long Branch NJ 07764 908 870 8809 1 800 755 8809 Tarantin Tank Co P O Box 6129 Freehold NJ 07728 908 780 9340 1 800 922 0724 Albany Ladder 1586 90 Central Avenue Albany NY 12205 NY MA VT 518 869 5335 1 800 354 7368 Dayton Hardware P O Box 275 North Dayton Station Dayton OH 45404 All States 513 258 3721 OH 1 800 762 3426 Halco Enterprises 208 Carter Drive Unit 21 West Chester PA 19382 215 696 2670 1 800 368 0803 LA Porte s Parts amp Service 2444 N 5th Street Hartsville SC 29550 803 332 0191 Parts Department Cans Unlimited Inc P O Box 645 Taylor SC 29687 All States 803 879 3009 1 800 845 5301 103343 ACCESSORIES Purchase these fireplace accessories from your local dealer If they can not supply these accessories either contact your nearest Parts Central see page 28 or call DESA International s Sales Department at 1 800 972 7879 for referral informa tion You can also write to the address listed on the back page of this manual MANUAL SHUTOFF VALVE GA5010 Manual shutoff valve with 1 8
14. 223 1 Section 5 3 Air for Combustion and Ventilation for required size of ventilation grills or ducts A 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 SSSsss SSSsa SSS 12 Ventilation Grills Ventilation Grills Into Adjoining Or Into Adjoining Room Bae Remove Option 2 pion Door into Option 3 i BJ Figure 2 Ventilation Air from Inside Building Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts You must provide two perma nent openings one within 12 of the ceiling and one within 12 of the floor Connect these items directly to the outdoors or spaces open to the outdoors These spaces include attics and crawl spaces IMPORTANT Do not provide openings for inlet or outlet air into attic if attic has a thermostat controlled power vent Heated air entering the attic will activate the power vent AEN Ventilated Outlet Air Attic Ouilet Air To Attic ES To Crawl A Space Inlet A Air Ventilated Inlet Air Crawl Space Figure 3 Ventilation Air from Outdoors 103343 INSTALLING NOTICE A qualified service person must install heater Follow all local codes NOTICE State or local codes may only allow operation of th
15. Conyorc Glow YELLOW FLAME DESIGN UNVENTED VENT FREE NATURAL GAS LOG HEATER 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 24 Remote Thermostatically Controlled Model CGD3924NR WARNING If the information in this WARNING Improper installation adjust manual is not followed exactly a fire or Ment alteration service or maintenance explosion may result causing property Can cause injury or property damage damage personal injury or loss of life Refer to this manual for correct installa tion and operational procedures For ao DO Nor SIONE Or Use gasoline or other assistance or additional information flammable vapors and liquids in the consult a qualified installer service vicinity of this or any other appliance agency or the gas supplier WHAT TO DO IF YOU SMELL GAS e Do not try to light any appliance WARNING This gas log set is for instal e Do not touch any electrical switch lation in a masonry solid fuel burning do not use any phone in your build fireplace or a U L listed manufactured ing solid fuel burning fireplace Immediately call your ga
16. Heat is generated by realistic dancing yellow flames This heater is designed for vent free operation with flue damper closed State and local codes in some areas prohibit the use of vent free heaters You 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 light heater 103343 AIR FOR COMBUSTION AND VENTILATION A WARNING 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 this and other fuel burning appliances in your home Today s homes are built more energy efficient than ever New materials increased insulation and new construction methods help reduce heat loss in homes Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in During heating months home owners want their homes as airtight as possible While it is good to make your home energy efficient your home needs to breathe Fresh air must enter your home All fuel burning appliances need fresh air
17. NTRAL Note Use only original replacement parts This will protect your warranty cover age for parts replaced under warranty Parts Under Warranty Contact authorized dealers of this product If they can t supply original replace ment part s call DESA International s Technical Service Department at 1 800 DESA LOG 1 800 337 2564 When calling DESA International have ready e your name e your address e model number of your heater e how heater was malfunctioning e type of gas used propane or natural gas e purchase date Usually we will ask you to return the defective part to the factory Parts Not Under Warranty Contact authorized dealers of this product If they can t supply original replace ment part s either contact your nearest Parts Central see Below or call DESA International s Parts Department at 1 800 972 7879 for referral information When calling DESA International have ready e model number of your heater e the replacement part number These Parts Centrals are privately owned businesses They have agreed to support our customer s needs by providing original replacement parts and accessories When calling a Parts Central ask for the Parts Department 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 P O Box
18. TURN OFF GAS TO APPLIANCE D Shutting Off Heater 1 Turn control knob clockwise Z N to the OFF position 2 Set remote selector switch in the OFF position to keep from draining battery Shutting Off Burners Only pilot stays lit You may shut off the burners and keep the pilot lit by doing one of the following e Turn control knob clockwise N to the PILOT position Use remote control manual OFF button e Set remote selector switch in the OFF position GE THERMOSTAT CONTROL OPERATION S The thermostat control setting on the remote control unit can be set to any comfort level between HI and LO The Burners will turn on and off automatically to maintain the comfort level you select The ideal comfort setting will vary by household depending upon the amount of space to be heated the output of the central heating system etc TE MANUAL LIGHTING PROCEDURE D 1 Follow steps 1 through 6 under Lighting Instructions pages 19 and 20 2 Depress control knob and light pilot with match 3 Keep control knob pressed in for 30 seconds after lighting pilot After 30 seconds release control knob Now follow step 9 page 20 WE HAND HELD REMOTE OPERATION p NOTICE You must light the pilot before using the hand held remote control unit See Lighting Instructions on page 19 Flame Adjustment Knob Control Knob in On Position ON ge Pon ERO A Remote Selector Switch in Remote Position Figure 21 Setting the Remote Selec
19. U SMELL GAS e Do not try to light any appliance e Do not touch any electric switch do not use any phone in your building e 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 C Use only your hand to push in or turn the gas control knob Never use tools If the knob will not push in or turn by hand don t try to repair it call a 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 GEE LIGHTING INSTRUCTIONS aaa A WARNING e If fireplace has glass doors never operate this heater with glass doors closed If you operate heater with doors closed heat buildup inside fireplace will cause glass to burst Also if fireplace opening has vents at the bottom you must open the vents before operating heater You must operate this heater with a fireplace screen in place Make sure fireplace screen is closed before running heater NOTICE During initial operation of new heater burning logs will give off a paper burning smell Orange flame will also be present Open damper or window to vent smell This will only last a few hours
20. ame to go out This problem could be caused by one or both of the following A Low gas pressure B Dirty or partially clogged ODS pilot Thermocouple connec tion loose at control valve Thermocouple damaged Control valve damaged 1 Press in control knob fully 2 After ODS pilot lights keep control knob pressed in 30 seconds 3 Fully open manual shut off valve 4 A Contact local natural gas company B Clean ODS pilot see Cleaning and Maintenance page 23 or replace ODS pilot assembly 5 Hand tighten until snug then tighten 1 4 turn more 6 Replace thermocouple 7 Replace control valve 103343 TROUBLE SHOOTING Continued OBSERVED POSSIBLE PROBLEM CAUSE REMEDY Burner does light 1 Burner orifice clogged 1 Clean burner see after ODS pilot is lit Cleaning and Mainte nance page 23 or replace burner orifice 2 Inlet gas pressure is 2 Contact local natural gas too low company 3 Burner orifice diameter 3 Replace burner orifice is too small 4 Thermopile leads 4 Reconnect leads see disconnected or Wiring Diagram page improperly connected 27 5 Burners will not come 5 Replace battery in on in remote position transmitter and receiver Delayed ignition 1 Manifold pressure is 1 Contact local natural gas burner too low company 2 Burner orifice clogged 2 Clean burner see Cleaning and Mainte nance page 23 or replace burner orifice Burner back
21. ater off see To Turn Off Gas to Appliance page 21 e see Troubleshooting pages 23 through 26 103343 CLEANING A WARNING AND Turn off heater and let cool before cleaning MAINTENANCE A CAUTION You must keep control areas burner 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 ODS PILOT AND BURNER e Use a vacuum cleaner or small soft bristled brush to clean LOGS e If you remove logs for cleaning refer to Installing Logs page 18 to properly replace logs e Replace log s if broken or chipped dime sized or larger TROUBLE A WARNING SHOOTING Turn off heater and let cool before servicing Only a qualified service person should service and repair heater Note All troubleshoot ing items are listed in order of operation A CAUTION Never use a wire needle or similar object to clean ODS pilot This can damage ODS pilot unit OBSERVED POSSIBLE PROBLEM CAUSE REMEDY When ignitor button 1 Ignitor electrode not con 1 Reconnect ignitor cable is pressed there is nected to ignitor cable no spark at ODS 2 Ignitor cable pinched or 2 Free ignitor cable if pilot wet pinched by any metal or tubing Keep ignitor cable dry 3 Piezo ignitor nut
22. bustible 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 up for all models If non combus tible material is less than 12 you must install the fireplace hood accessory 24 and 30 models 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 Non Combustible Requirements for Material Distance A Safe Installation 12 or more Non combustible material okay Between 8 and 12 Install fireplace hood accessory GA6050 or GA6052 see Accessories page 29 Less than 8 Non combustible material must be extended to at least 8 See Between 8 and 12 above If you cannot extend material you must operate heater with flue damper open Heat Resistant Material Figure 5 Heat Resistant Material Slate Marble Tile etc Above Fireplace 103343 INSTALLING Minimum Non Combustible Material Clearances 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 materia
23. ce floor using two masonry screws in hardware package see Figure 11 page 14 8 Connect to gas supply See Connecting To Gas Supply page 15 103343 INSTALLING Continued Flexible Gas Hose if allowed by local codes Figure 10 Attaching Flexible Gas Hose to Heater Mounting Flanges Figure 11 Attaching Base Assembly to Fireplace Floor 103343 INSTALLING Continued CONNECTING TO GAS SUPPLY 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 e piping check local codes e sediment trap e sealant resistant to propane LP gas e tee joint e manual shutoff valve e pipe wrench e test gauge connection AnA G A design certified manual shutoff valve with 1 8 NPT tap is an acceptable alternative to test gauge connection Purchase the optional A G A design certified manual shutoff valve from your dealer See Accessories page 29 A WARNING Never connect heater to private non utility gas wells This gas is commonly known as well head gas A CAUTION Use only new black iron or steel pipe Internally tinned copper tubing may be used in certain areas Check your local codes Use pipe of 1 2 diameter or greater to allow proper gas volume to heater If pipe is too small undue loss of pressure will occur
24. elector switch is in the OFF position when you are away from home for long periods of time This heater must not be connected to any external electrical source Operating heater above elevations of 4 500 feet may cause pilot outage 103343 PRODUCT IDENTIFICATION Remote Control LOCAL CODES UNPACKING PRODUCT FEATURES Crossover Log CS Re Front Log NG Back Log Burner INS ie I E SS oo 2 T i By Middle Lo Piezo Remote gt Q g Ignitor Selector oN 5 i Ys Switch XE oy Flame Adjustment Base Grate Knob Control Knob Figure 1 Vent Free Gas Log Heater Install and use heater with care Follow all local codes In the absence of local codes use the latest edition of The National Fuel Gas Code ANSI Z223 also known as NFPA 54 Available from American National Standards Institute Inc 1430 Broadway New York NY 10018 National Fire Protection Association Inc Batterymarch Park Quincy MA 02269 1 Remove logs and heater base assembly from carton Note Do not pick up heater base assembly by burners This could damage heater Always handle base assembly by grate 2 Remove all protective packaging applied to logs and heater for shipment 3 Check all items for any shipping damage If damaged promptly inform dealer where you bought heater Operation This heater is clean burning It requires no outside venting There is no heat loss out a vent or up a chimney
25. erating Heater ssscisse sssssctctevssscsaatg ere eare o ens EE enne E i a at 19 Inspecting B merS iaee e n ER EEEE E S 22 Cleaning and Maintenance 00 0 cece eeeesecseeeseceeceseceeceseeeeeeeeeeeeeseeeeeeas 23 Troubleshooting scisceii Se aa E E E N A EESE 23 Technical Services ai e a E E EE E E RSR 21 Specifica ONS esient seier ai e RE EE E E E A REEE 27 Service Hints les cesses csees Ai castes Aosta bh a E E KRA a aa 27 Wiring Dia Brain ve csee editii i a A E EE A E EE t 27 Replacement P rts cossens etres Gis en iise Sera rE E Ea cies 28 Parts Central oroen a a a AG SS is S 28 ACCESSONIES les n E E AE a a Bh 29 Tllustrated Parts Lists ernn rars pe i eee e eiA 30 Warranty Information s sseeesesseeeseeeeseeeesesresesssserrtsreersresrrsrsrrrssererereerereet Back Cover A WARNINGS IMPORTANT Read this owner s manual carefully and completely before trying to assemble operate or service this heater Improper use of this heater can cause serious injury or death from burns fire explosion electrical shock and carbon monoxide poisoning A DANGER Carbon monoxide poisoning may lead to death Carbon Monoxide Poisoning Early signs of carbon monoxide poisoning resemble the flu with headaches dizziness or nausea If you have these signs the heater may not be working properly Get fresh air at once Have heater serviced Some people are more affected by carbon monoxide than others These include pregnant
26. even when 1 Gas leak See Warning 1 Locate and correct all control knob is in OFF statement at top of leaks see Checking Gas position page Connections page 16 2 Control valve defective 2 Replace control valve Gas odor during 1 Foreign matter between 1 Take apart gas tubing and combustion control valve and burner remove foreign matter 2 Gas leak See Warning 2 Locate and correct all statement at top of page leaks see Checking Gas Connections page 16 103343 SPECIFICATIONS TECHNICAL SERVICE SERVICE HINTS WIRING DIAGRAM You may have further questions about installation operation or troubleshooting If so contact DESA International s Technical Service Department at 1 800 DESA LOG 1 800 337 2564 CGD3924NR Btu Variable 20 000 39 000 Type Gas Natural Gas Only Ignition Piezo Manifold Pressure 3 5 W C Inlet Gas Pressure in of water Maximum 10 5 Shipping Weight 30 Ibs When gas pressure is too low e pilot will not stay lit e burners will have delayed ignition e heater will not produce specified heat When gas quality is bad e pilot will not stay lit e burners will produce flames and soot e heater will backfire when lit You may feel your gas pressure is too low or gas quality is bad If so contact your local natural gas supplier On White Off Receiver Remote TPTH TH Thermopile Gas Control TPTH TP 103343 REPLACEMENT PARTS PARTS CE
27. firing 1 Burner orifice is 1 Clean burner see during combustion clogged or damaged Cleaning and Mainte nance page 23 or replace burner orifice 2 Damaged burner 2 Replace damaged burner 3 Gas regulator defective 3 Replace gas control 1 Not enough air 1 Check burner for dirt and debris If found Slight smoke or clean burner see odor during initial Cleaning and Mainte operation nance page 23 2 Gas regulator defective 2 Replace gas control 3 Residues from manu 3 Problem will stop after a facturing processes few hours of operation and logs curing Moisture condensa 1 Not enough combus 1 Refer to Air for Com tion noticed on tion ventilation air bustion and Ventilation windows requirements page 5 Heater produces a 1 Turning control knob 1 Turn control knob to LO whistling noise to HI position when position and let warm up when burner is lit burner is cold for a minute 2 Air in gas line 2 Operate burner until air is removed from line Have gas line checked by local natural gas company 3 Air passageways on 3 Observe minimum heater blocked installation clearances see pages 9 12 4 Dirty or partially 4 Clean burner see clogged burner orifice Cleaning and Maintenance page 23 or replace burner orifice Continued AS TROUBLE SHOOTING Continued A WARNING If you smell gas building e Shut off gas supply e Do not try to light any appliance e Do not touch any electrical
28. heater e in a recreational vehicle e where curtains furniture clothing or other flammable objects are less than 36 inches from the front top or sides of the heater e in high traffic areas e in windy or drafty areas 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 Creosote will ignite if highly heated Inspect chimney flue for damage If damaged operate heater with flue damper closed If fireplace has glass doors never operate this heater with glass doors closed If you operate heater with doors closed heat buildup inside fireplace will cause glass to burst Also if fireplace opening has vents at the bottom you must open the vents before operating heater You must operate this heater with a fireplace screen in place Make sure fireplace screen is closed before running heater This log heater is designed to be smokeless If logs ever appear to smoke turn off heater and call a qualified service person Note During initial operation slight smoking may occur due to log curing and heater burning manufacturing residues Do not allow fans to blow directly into the fireplace Avoid any drafts that alter burner flame patterns Ceiling fans may create drafts that alter burner flame patterns Altered burner patterns can cause sooting Do not use a blower insert heat exchanger insert or other accessory not approved for use with thi
29. hen you adjust controls Moving heater may cause a gas leak A WARNING If installing in a sunken fireplace special care is needed You must raise the fireplace floor to allow access to heater control panel This will insure adequate air flow and guard against soot ing Raise fireplace floor with non combustible material Make sure material is secure A CAUTION Do not pick up heater base assembly by the burner This could damage heater Only handle base assembly by grates IMPORTANT Make sure the heater burners are level If heater is not level heater will not work properly Installation Items Needed e hardware package provided with heater e approved flexible gas hose not provided if allowed by local codes e sealant resistant to propane LP gas not provided e electric drill with 3 16 masonry drill bit 1 Apply pipe joint sealant lightly to male threads of the fitting to be threaded into gas regulator Connect approved flexible gas hose to gas regulator of heater see Figure 10 page 14 2 Locate masonary screws in hardware package 3 Position heater base assembly in fireplace 4 Mark screw locations through holes in mounting flanges see Figure 11 page 14 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 masonry drill bit 7 Attach base assembly to firepla
30. implied warranties or exclusion or limitation on damages may not apply to you This warranty gives you specific legal rights and you may also have other rights that vary from state to state For information about this warranty write DESA INTERNATIONAL 2701 Industrial Drive P O Box 90004 Not a UPC 103343 01 Bowling Green KY 42102 9004 Rev A 6 97
31. is appliance in a vented configuration Check your state or local codes A WARNING Make sure the remote selector switch is in the OFF position before installing heater A 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 Creosote will ignite if highly heated Inspect chimney flue for damage If damaged operate heater with flue damper closed A WARNING Seal any fresh air vents or ash clean out doors located on floor or wall of fireplace If not drafting may cause pilot outage or sooting Usea heat resistant sealant Do not seal chimney flue damper A WARNING Never install the heater in a bedroom or bathroom e in a recreational vehicle where curtains furniture clothing or other flammable objects are less than 36 inches from the front top or sides of the heater e in high traffic areas e in windy or drafty areas A 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 walls IMPORTANT Vent free heaters add moisture to the air Although this is benefi cial installing heater in rooms without enough ventilation air may cause mildew to form
32. is loose 3 Tighten nut holding piezo ignitor to base panel of log set Nut is located behind base panel Replace ignitor cable Replace piezo ignitor Replace piezo ignitor Replace piezo ignitor Continued Broken ignitor cable Bad piezo ignitor Ignitor electrode broken Ignitor electrode posi tioned wrong NYDN NYDN A 103343 TROUBLE SHOOTING Continued OBSERVED POSSIBLE PROBLEM CAUSE REMEDY When ignitor button 1 Gas supply turned off or 1 Turn on gas supply or is pressed there is spark at ODS pilot but no ignition manual shutoff valve closed Control knob not in PILOT position Control knob not pressed in while in PILOT position Air in gas lines when installed ODS pilot is clogged Gas regulator setting is not correct open manual shutoff valve 2 Turn control knob to PILOT position 3 Press in control knob while in PILOT position 4 Continue holding down control knob Repeat igniting operation until air is removed 5 Clean ODS pilot see Cleaning and Mainte nance page 23 or replace ODS pilot assembly 6 Replace gas control ODS pilot lights but flame goes out when control knob is released Control knob not fully pressed in Control knob not pressed in long enough Manual shutoff valve not fully open Pilot flame not touching thermocouple which allows thermocouple to cool causing pilot fl
33. l Transmitter Heat Shield Screw Flame Adjustment Knob Off Pilot On Knob Screw Hex Slt Wsr 10 32 x 38 Pilot Tube Regulator to pilot Pilot Regulator Warning Plate Lighting Instructions Plate Warning Plate Fastener Caution Decal Hardware Kit Information Video Lava Rock 3 Poa pasa anon anyon nn nnn nn app on in in 103343 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 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 To make a claim under this warranty the Bill of Sale or cancelled check must be presented 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 Authorized Service Center Warranty part s MUST be obtained through authorized dealers
34. l must extend at least 8 inches up for all models If non combustible material is less than 12 you must install the fireplace hood acces sory 24 and 30 models only Even if non combustible material is more than 12 you may need the hood accessory to deflect heat away from your mantel shelf See chart below and Figures 6 and 7 for minimum clearances IMPORTANT If you cannot meet these minimum clearances you must operate heater with chimney flue damper open Non Combustible Requirements for Material Distance A Safe Installation 12 or more Non combustible material okay Between 8 and 12 Install fireplace hood accessory GA6050 or GA6052 see Accessories page 29 Less than 8 Non combustible material must be extended to at least 8 See Between 8 and 12 above If you cannot extend material you must operate heater with flue damper open Mantel Clearances If you meet minimum clearance between mantel shelf and top of fireplace open ing a hood is not required see Figure 6 Mantel Shelf Underside of Mantel Shelf All minimum distances are in inches Minimum Non gt Combustible L Material og Set 12 20 2412 2712 30 24 30 Models 8 14 16 54 18 2 20 lt 18 Model TF ff Top of Fireplace QF Fe Opening Minimum Non Distances to Combustible Underside of Material Height Mantel Figure 6 Minimum Mantel Clearances Without Using Hood If above
35. ment CHECKING GAS CONNECTIONS A WARNING Test all gas piping and connections for leaks after installing or servicing Correct all leaks at once A 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 Pressure Testing gas Supply Piping system Test Pressures In Excess Of 1 2 PSIG 1 Disconnect heater and its individual manual shutoff valve from gas supply piping system Pressures in excess of 1 2 psig will damage heater regulator 2 Cap off open end of gas pipe where manual shutoff valve was connected Continued 103343 INSTALLING Continued 3 Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter 4 Check all joints of gas supply piping system Apply mixture of liquid soap and water to gas joints Bubbles forming show a leak 5 Correct all leaks at once 6 Re connect heater and manual shutoff valve to gas supply Check re connected fittings for leaks Test Pressures Equal To or Less Than 1 2 PSIG 1 Close manual shutoff valve see Figure 13 2 Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter 3 Check all joints from gas meter to manual shutoff valve see Figure 14 Apply mixture of liquid soap and water to gas joints Bubbles formi
36. ng selected A red light will come on beside the operation mode being used when the status button is pressed 4 To turn the burners off when operating in the MANUAL mode press the OFF button If operating in the auto mode press the manual button then press the OFF button The pilot will remain lit IMPORTANT To turn the pilot off manually turn the control knob on the heater to the OFF position or set remote selector switch to OFF position Shows Temperature Setting ideradses Room Temperature gt TEMP Decreases Room Allows Burners to be Turned Temperature On and Off with the Hand Held Remote Unit 50800000 lt al Turns Burners On and Off Shows Current Operation Mode The log heater will automatically cycle between pilot and the heat setting that has been selected auto Figure 22 Thermostat Hand Held Remote Control Unit Selections Check pilot flame pattern and burner flame patterns often PILOT FLAME PATTERN Figure 23 shows a correct pilot flame pattern Figure 24 shows an incorrect pilot flame pattern The incorrect pilot flame is not touching the thermocouple This will cause the thermocouple to cool When the thermocouple cools the heater will shut down Pilot Burner Thermocouple Pilot Burner Thermocouple Figure 23 Correct Pilot Flame Pattern FIGUE 2A COUPEE PIOERIAME Pattern If pilot flame pattern is incorrect as shown in Figure 24 e turn he
37. ng show a leak 4 Correct all leaks at once Pressure Testing Heater Gas Connections 1 Open manual shutoff valve see Figure 13 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 14 Apply mixture of liquid soap and water to gas joints Bubbles forming show a leak Correct all leaks at once 6 Light heater see Operating Heater pages 19 through 22 Check all other internal joints for leaks 7 Turn off heater see To Turn Off Gas to Appliance page 21 A Manua Shutoff Valve Closed Figure 13 Manual Shutoff Valve i as Thermostat Gas Valve or uto Control Valve Location Valve Gas Meter J Figure 14 Checking Gas Joints 103343 INSTALLING Continued INSTALLING LOGS A 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 It is very important to install these logs exactly as instructed Do not modify logs Only use logs supplied with heater 1 Locate pegs on the bottom of back log 1 Slide these pegs into the holes in the grate base behind the burner see Figure 15 2 Place the base
38. of the middle log 2 in the U shaped slots of the grate base in front of the back log The cutout on the right of the middle log should fit over the burner see Figure 16 Make sure the front of the middle log is resting on the tabs of the grate base and the cutout area is centered over the burner U bend 3 Locate the recesses on the back of the front log 3 Fit these recesses between the posts of the grate base see Figure 17 4 Locate the notches in the bottom of the crossover log 4 Place the crossover log on top of the middle log and front log Make sure the notches of the cross over log lines up with rectangular knobs on top of the middle and front logs see Figure 18 Back Log 1 Middle Log 2 Figure 15 Installing Back Log 1 Front Log 3 Notches Rectangular Knobs Figure 17 Installing Front Log 3 Figure 18 Installing Crossover Log 4 103343 OPERATING For Your SAFETY READ BEFORE LIGHTING B HEATER A 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 B BEFORE LIGHTING smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YO
39. s heater sensor ODS pilot light safety system The ODS shuts down the heater if not enough fresh air is available See Air for Combustion and Ventilation pages 5 through 7 If heater keeps shutting off see Troubleshooting pages 23 through 26 Do not run heater e where flammable liquids or vapors are used or stored e under dusty conditions Do not use this heater to cook food or burn paper or other objects Heater base assembly becomes very hot when running heater Keep children and adults away from hot surface to avoid burns or clothing ignition Heater will remain hot for a time after shutdown Allow surface to cool before touching Carefully supervise young children when they are in the room with heater When using the hand held remote accessory keep remote selector switch in the OFF position to prevent children from turning on burners with hand held remote control unit Do not use heater if any part has been exposed to or under water Immediately call a qualified service technician to inspect the room heater and to replace any part of the control system and any gas control which has been under water Do not operate heater if any log is broken Do not operate heater if a log is chipped dime sized or larger Turn heater off and let cool before servicing installing or repairing Make sure the remote selector switch is in the OFF position Only a qualified service person should install service or repair heater Make sure the remote s
40. s supplier from a neighbor s phone Follow the WARNING This is an unvented gas i ariel dear fired heater It uses air oxygen from l the fire ement SUP the room in which it is installed Provi piers cal Ihe fire department sions for adequate combustion and ven Installation and service must be per tilation air must be provided Refer to formed by a qualified installer service Air for Combustion and Ventilation sec agency or the gas supplier tion in this manual Save this manual for future reference CONTENTS SAFETY INFORMATION SECTION PAGE Safety INLOLMatOM soe osc dcves soesseeesepasdeveeiae deck setae ouch steaned eo EEE EENE Ses 2 Prod ct Id ntifica OT h eee aeee aeara onkeen ioti tapepa kE PSs E EEE 4 Local Codes a e r E E E E ATE EEE EEES 4 Dia ote T eA Si n EE EE E EEEE Megs ales soncds calpbsthosiesstectenes 4 Product Features onni n ee EEE Eo ieee EEEE 4 Air for Combustion and Ventilation 00 cece ceseeeeceeeeeeceeeeeeeeeeees 5 Installing secs staan anlage hed cereal 8 Check Gas Dy per aisi tient coh ni ae haa 8 Installation and Clearances Vent Free Operation Only 9 Installing Heater Base Assembly 000 eee ceecesecseceseeseeeseeeeeeeees 13 Connecting to Gas Supply cece eecceeeeecseeseeceessecnecssecnecsseeseensees 15 Checking Gas Connections 0 0 cee eeceeeeeseseecseceecseceeaecsseeseenseesees 16 Installing Logs heses eseese ee a ise ies 18 Op
41. tor Switch Control Knob and Flame Adjustment Knob for Remote Operation 1 After lighting let pilot flame burn for about one minute Turn control knob to ON position Adjust flame adjustment knob anywhere between HI and LO Slide the remote selector switch to the REMOTE position The burners will come on You can now turn the burners on and off with the hand held remote control unit IMPORTANT Do not leave the remote selector switch in the REMOTE position when the pilot is not lit This will drain the battery 2 Select the MANUAL or AUTO button on the hand held remote control unit In MANUAL mode turn burners on or off by pressing the ON or OFF buttons on the hand held remote control unit In AUTO mode the room temperature is controlled by the thermostat in the hand held remote control unit To increase the room temperature press the top arrow of the TEMP button To lower room the temperature press the bottom arrow to the TEMP button At higher settings the heater will run more IMPORTANT The hand held remote control unit must be near the heater Do not keep the hand held remote control unit too close the heater The thermostat on the hand held remote control unit will heat up too quickly and turn the vinea BAN 21 off Continued 103343 OPERATING HEATER Continued INSPECTING BURNERS 3 Use the STATUS button on the hand held remote control unit to see the operation mode being used and the temperature setti
42. um Btu Hr the space can support You must provide additional fresh air Your options are as follows A Rework worksheet adding the space of an adjoining room If the extra space provides an unconfined space remove door to adjoining room or add ventilation grills between rooms See Ventilation Air From Inside Building page 7 B Vent room directly to the outdoors See Ventilation Air From Outdoors page 7 C Install a lower Btu Hr heater if lower Btu Hr size makes room unconfined If the actual Btu Hr used is less than the maximum Btu Hr the space can support the space is an unconfined space You will need no additional fresh air ventilation 103343 AIR FOR COMBUSTION AND VENTILATION Continued A WARNING 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 2223 1 1992 Section 5 3 VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space When ventilating to an adjoining unconfined space you must provide two permanent openings one within 12 of the ceiling and one within 12 of the floor on the wall connecting the two spaces see options 1 and 2 Figure 2 You can also remove door into adjoining room see option 3 Figure 2 Follow the National Fuel Gas Code NFPA 54 ANSI Z
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