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1. 2777777777 weather close damper 2 Ly which exposes warning Gf plate Furnace will then D i patent axi f amount of heat until V amper room temperature bond reaches setting on wall thermostat FIGURE 22 LIMIT SWITCH TEMPERATURE SETTINGS SO NPI30A ue SO NPISOA SOINPIGSA 180 SOINP TSA Page 13 MAINTENANCE INSTRUCTIONS CAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation For proper operation Floor Furnace must be kept clean At regular intervals turn control valve to off let cool remove register and clean dust and foreign material from jacket with vacuum cleaner Have the Floor Fumace checked by a qualified service technician for venting system pilot and burner operation prior to its use each year Follow a regular service and maintenance schedule for safe and efficient operation Keep flammable materials away from floor furnace area Be sure not to obstruct combustion and ventilation air TO CLEAN BURNER Remove bottom pan from outer casing WARNING Do not use any kind of solvent or cleaning fuid to clean your floor furnace It may leave a residue or invisible coating that will burn smell when you turn your floor furnace on Use only a damp cloth Repair service must be performed by a qualified service technician The floor furnace must be inspected before initial use
2. gaskets and 7 sheet metal screws Begin by pressing the rope like gasket material into the groove provided around the two male vent outlets on the floor furnace See Figure 6 GASKET MATERIAL Slip the two female couplings in the draft hood over the male outlets extending through the outer casing making sure the gaskets remain in place Press the draft hood tight against the casing and use the 7 sheet metal screws to secure it tightly 7 screws must be used to prevent leakage of vent gases Never install or operate a floor furnace without a draft hood To do so could result in serious injury property damage or death FIGURE 6 CONNECTING THE VENT Refer to the specifications on Page 2 for the correct vent pipe size Familiarize yourself with local codes or contact authorities to determine the approved material and method of installing the vent NOTE An existing vent that has worked for years may mot be adequate for todays design because of higher efficiency requirements that result in lower stack temperatures Improper or unsafe venting presents a hazard that may result in property damage bodily injury or loss of life Listed below are some guidelines to observe when installing the vent system Never reduce the vent pipe to a size smaller than the outlet on the draft hood i 2 Never run pipe more than 15 feet horizontall 3 The total horizontal run ofa vent plus the horizontal vent connector shall be not
3. THIS WILL PREVENT BURNS ALWAYS LEAVE THE GRILL IN PLACE EXCEPT WHEN CLEANING OR SERVICING THE FLOOR FURNACE NEVER OPERATE THE FLOOR FURNACE WITHOUT THE SIGHT GLASS ASSEMBLY IN PLACE OR WITH THE GLASS BROKEN OR MISSING HELPFUL INSTALLATION INFORMATIO Do not attempt to heat through more than ane doorway in any direction to adjoining rooms ays over estimate the amount of heat required rather than under estimate it Always use the next size floor furnace above your actual heating requirements Seal all cracks around windows doors and attic access doors or significant heat loss will occur INSTALLATION REQUIREMENT Listed below are steps that are part of a floor furnace installation You must see that each step is followed closely so that the floor furnace will provide maximum efficiency with safe operation YOUMUST Locate the floor furnace in the best available space for safe and efficient operation Provide fresh air for combustion and venting Cut and frame the floor opening so that the floor furnace fits properly Attach the draft hood and connect the vent pipe in compliance with applicable codes Connect an adequate gas supply to the floor furnace Select the best location for the thermostat Check and adjust the floor furnace for safe and efficient operation Ifyou have any doubts about the correct way to install floor furnace contact local authorities or agency or your gas supplier If local o
4. An annual cleaning of floor furnace and safety performance check should be made by a qualified service technician More frequent cleaning may be required when exposed to the excessive lint conditions due to carpeting and bedding material etc t is imperative that the control compartment burners and circulating air passageways of the floor furnace be kept clean Any safety screen or guard removed for servicing the floor furnace must replaced prior to operating heater Remove 2 screws from burner support bracket Remove 2 screws from pilot bracket allowing burner to the enfie venling syatent as a romline part of slide off of manifold and out of floor furnace perfoettance check annal basis 4 Examine the burner If any distortion is noticed replace burner 5 Clean burner ports by inserting a toothpick in ports to WARNING remove any debris that might have accumulated This is a gas fired floor furnace Keep the 6 Inspect burner for spider webs or dust buildup during the ii TE necs en area clear of gasoline and other flammable off season necessary wash out with garden hose of ga 7 Reinstall and adjust burner vapor and liquids All combustible material must be kept clear of this area to avoid fire or explosion SERVICE RECORD SERVICE RECORD SERVICE RECORD SERVICE RECORD Page 1d TROUBLE SHOOTING CHART MAIN BURNER FOR USE BY A QUALIFIED SERVICE TECHNICIAN SYMPTOM
5. DURATION OF THE MANUFACTURER S EXPRESS WRITTEN WARRANTY UNDER NO CIRCUMSTANCES SHALL THE MANUFACTURER BE LIABLE FOR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES OR EXPENSES ARISING DIRECTLY INDIRECTLY FROM ANY COMPONENT OR FROM THE USE THEREOF THE REMEDIES SET FORTH HEREIN SHALL BE THE EXCLUSIVE REMEDIES AVAILABLE TO THE USER AND ARE IN LIEU OF ALL OTHER REMEDIES SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATIONS OR EXCLUSIONS MAY user and the manufacturer will not be liable for any NOT APPLY TO YOU expenses incurred by the user in remedying any THIS WARRANTY GIVES YOU defect in the product SPECIFIC LEGAL RIGHTS AND YOU MAY Service under this waranty is the ALSO HAVE OTHER RIGHTS WHICH VARY responsibility of the installer In the event FROM STATE TO STATE under this warranty is needed the user of the product TABLE A Warranty Period Product Heat Exchanger Tubes Burners Cozy Gas Fired Floor Furnace 10 Years 10 Years Cozy Gas Fired Wall Fumace 10 Years 10 Years Cozy Gas Fired Vented Console Heater 10 Years 10 Years Cozy Gas Fited Direct Vent Heater 10 Years 10 Years Cozy Gas Fired Counterflow Furnace 10 Years 10 Yeats Cozy Gas Fired Counterflow Direct Vent Furnace 10 Yeurs 10 Years Cozy Gas Fired Mobile
6. Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department 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 Force attempted repair may result in fire or explosion 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 gas control which has been under water INSTRUCTIONS Pilot Burner Pilot is located on the side of and toward control end of burner Locate the red piezo igniter button beside the control rod Press down on the control rod with the furnace key Immediately begin a series of pushing and releasing the red piezo igniter while observing the pilot through the sight glass opening continue to spark until pilot is lit or use the lighter rod with match Continue to hold the control rod down for about one 1 minute after the pilot is lit Iit goes repeat steps 4 through 10 If control rod does not pop up when released STOP and immediately call your service technician or gas supplier Ifthe pilot will not stay lit after several tries turn the control rod to OFF and call your service technician or gas supplier Replace the sight glass assembly and turn the control rod counterclock
7. Na xo s 1030 majs 1060 mals 1170 7433 5 1220 Piezo lior 700 Swiss 1 soie s 700 Sie 700 nior Wire a mes s 630 Toss 630 Tess s 630 743505 630 as 74350 9 10 74350 s 90 5 74350 s Bottom Burner Cover Na 2399s i010 24039 i010 5 psj 24608 5 ma ATTTN Contractors and Service Technicians we only sell parts through our wholesalers but the rices listed above are for your convenience For Prices and specifications subject Prompt pars service ontact the without modice All which you purchased your Cozy heater NOTE prices are factory Parts amp schematic drawings on current models are MARCH 2013 shown at www cozyheaters com VAANAAAANNSNNNNNSNNNNNNNNNNES ITN AAAAAAAAAAAAAAAAAAAAAAAAAAAA LIMITED The Louisville Tin amp Stove Co warrants to the accompanying product for the period specified herein provided said product is installed operated maintained serviced and used the original us according t0 the instructions amd specifications accompanying the product AS OUTLINED IN OUR INSTRUCTIONS ANY WARRANTY CONSIDERATIONS ARE CONTINGENT ON INSTALLATION BY QUALIFIED INSTALLER CONTRACTOR SELF INSTALLATION IS PROHIBITED AND WILL INVALIDATE YOUR WARRANTY IT within a period of one year from the date of installation of the product any part supplied by the manufacturer proves to be def
8. greater than 75 percent of the vertical height of the vent 4 Slope horizontal pipe upwards at least inch per lineal foot 5 Donotusemore than one elbow An elbow restricts the flow of vent gases by approximately 10 6 Useanoncombustible thimble when connecting vent pipe to a masonry chimney 7 Donotinsert vent pipe farther than inch into the interior of the chimney 8 Single wall pipe must not be used 9 Never connect the vent pipe to any chimney or vent system serving a solid fuel burning appliance 1 0 If another appliance is being vented through the vent system with the floor furnace the vent pipe must be increased to compensate for the additional load 11 Never install any kind of damper in the vent system 12 Do not use transite or any other type of ceramic pipe for venting Class double wall pipe is acceptable to most codes and if installed in accordance with the pipe manufacturers instructions provides the safest and most efficient vent system Class B pipe has an integral lock for securing sections together These locks must be properly fitted together Fasten pipe to draft hood using at least three self tapping sheet metal screws at equal intervals around the circumference of the pipe Support horizontal pipe at three foot intervals with metal strapping attached to joists The floor furnace you have selected was carefully designed to operate both safely and efficiently when vented with the proper
9. of ventilation due to the use of louvers grills or screens add approximately 50 to the square inches calculated Screen all openings with mesh not less than 14 inch to prevent animals or insects from entering the crawl space All type B vents shall extend in a generally vertical direction with offsets not exceeding 45 degrees except that a vent system having not more than one 60 degree offset may be allowed Any angle greater than 45 degrees from the vertical is considered horizontal The total horizontal run of a vent plus the horizontal vent connector shall be not greater than 75 percent of the vertical height of the vent Any offsets used should be as far above the drafthood as possible to allow a venting action to begin before any restriction is encountered Page CUTTING THE FLOOR OPENING Consult the specification chart on Page 2 for the correct floor opening size for the floor furnace to be installed Lay out the opening size on the floor by using masking tape or cutting a piece of cardboard to the opening size The opening must be cut square If you have determined that there is nothing under the floor to interfere with the installation you are now ready to cut the opening Start by drilling Y inch holes inside the lines of each corner Use a keyhole saw or a properly grounded saber saw to cut along the lines making sure to keep the lines straight and the corners square If the opening dimensions are not correct i
10. supply pressure Check supply pressure as outlined shove Too muck ea Thermostat set high Tower sting ol temp dial See Lighting and Sung Down Instructions Combination control valve sticks open Replace combination control valve Burner won t mrn on Pilot flame too large or too small Readjust pilot flame using adjustment screw marked Pilot on combination contol valve See Page 10 Dirt in pilot orifice 2 Clean pilot orifice with air or solvent do not ream Defective automatic pilot section in Replace entire combination control valve combination control vale Defective Thermocouple Replace thermocouple Page 15 MODELSINCLUDI GAS FLOOR FURNACELISTPRICES 90 30 NAT 90NSOA NAT Prices and specifications subject to change 90NGSA NAT witout notice All prices 90N75A NAT are FO B factory Specify model number when ordering parts 3 BURNERASSEMBLY FOR BURNERASSEMBLY FOR 9 NADA 90NSUA 90NGSA 90NTSA ATTN Contractors and Service Technicians we only sell parts through our wholesalers but the prices listed are for your convenience For prompt parts service contact the wholesaler from which you purchased your Cozy heater NOTE Parts amp schematic drawings on current models are shown at ww cozyheaters com MARCH2013 Page 16 HOW TO PROPERLY ORDER PARTS In addition to part descriptio
11. Based on pressure drop of 05 inches water column Copper tubing must comply with limitations of NATIONAL FUEL GAS CODE reerence 26 3 metallic tubing Steel pipe should be of at east standard weight Schedule 40 Support the piping or tubing at regular intervals with metal pipe strapping See chart below Nominal Steel Spacing of Nominal of Spacing of Pipe Size Supports tubing Supports ur 6 BA B SH r3 6 Where local conditions include earthquake tornado unstable ground or flood hazards give special consideration to increased strength and flexibility of piping supports and connections Consult local authorities for recommendations All unused openings in the piping system must be securely closed gas tight Pages pm TE hdito Refera Figure 1 forthe basie tings you wil Inesa 1 or steel pipe and fitings or other pipe and tings that are approved by local codes Manual cut off valve 2 Use pipe joint compound that is resistant to the action of Liquefied Petroleum L P Gasor to any ther chemical consttaents of the pases to be conducted through the piping only male threads 3 Use two wrenches when making the connection 3 tothe valve to ep from bending fhe mounting or manifold pipe Do not overtighten as LU s dacasge tothe valve can occi C J 4 Providea 1 8 nominal pipe thread NPT
12. CIATION BATTERYMARCH PARK QUINCY MA 02269 DO NOT INSTALL THIS FLOOR FURNACE IN RECREATIONAL VEHICLE TRAILER OR MOBILEHOME DO NOT OPERATE THIS FLOOR FURNACE UNLESS IT IS CONNECTED TO A PROPERLY INSTALLED AND MAINTAINED VENT SYSTEM DO NOT EXHAUST FLUE GASES UNDER THE FLOOR FOR ANY REASON BESURETHIS FLOOR FURNACE IS EQUIPPED FOR THE GAS YOU INTEND TO USE LOCATE THE THERMOSTAT IN A ROOM OR SPACE THAT CANNOT BE SEPARATED BY DOOR OR OTHER MEANS FROM THE ROOM OR SPACE IN WHICH THE FLOOR FURNACE GRILL IS INSTALLED NEVER USE A MATCH CANDLE FLAME OR OTHER SOURCE OF IGNITION TO CHECK FOR GAS LEAKS USE ONLY SOAPY WATER OR LIQUID DETERGENT ADEQUATE AIR FOR COMBUSTION AND VENTING MUST BE PROVIDED IFITIS SUSPECTED THAT RISING WATER OR SEEPAGE MAY ENTER THE FLOOR FURNACE TURN OFF THE GAS IMMEDIATELY DO NOT USE THIS FLOOR FURNACE IF ANY PART HAS BEEN UNDER WATER IMMEDIATELY CALLA QUALIFIED SERVICE TECHNICIAN TO INSPECT THE FLOOR FURNACE AND TO REPLACEANY PART OF THE CONTROL SYSTEM ANDANY GAS CONTROL WHICH HAS BEEN UNDER WATER HAVE YOUR FLOOR FURNACE AND VENT SYSTEM INSPECTED BEFORE USING AND ATLEASTANNUALLY BY AQUALIFIED SERVICE TECHNICIAN THE GRILL BECOMES HOT WHEN THE FLOOR FURNACE IS IN OPERATION CHILDREN MUSTBE CLOSELY SUPERVISED WHEN INTHE PRESENCE OF ANY HEATING APPLIANCE CONTACT WITH BARE SKIN MAY RESULTIN SEVERE BURNS KEEPCHILDREN OFFTHEGRILL BEFORE CLEANING OR SERVICING THE FLOOR FURNACE TURN OFF THE GAS ANDALLOW ITTO COOL
13. Gas Fired Vented FLOOR FURNACE ui INSTALLATION AND REV 02 2010 OPERATING INSTRUCTIONS MARCH 2013 MODEL NUMBERS MILLIVOLTCONTROL SYSTEM NATURALGAS 90N30A 90 50 90N75A 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 E Donot try to lightany appliance Donot touch any electrical switch do not use any phone in yourbuildi Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions lf you cannot reach your gas supplier call the fire appliance MER Retain this manual for future reference department The coating selected to provide 5 longer life to the heat exchanger INSTALLATION AND SERVICE MUST BE PERFORMED may smoke slightly upon initial BY A QUALIFIED INSTALLER SERVICE AGENCY OR firing Please provide adequate THE GAS SUPPLIER ventilation if this occurs WARNING Operation of this furnace when not connected to a properly installed and maintained venting system can result in Carbon Monoxide C O poi th For your safety this furnace and the venting system should be inspected at le THIS UNIT IS FOR RESIDENTIAL USE ONLY AND IS NOT APPROVED FOR INSTALLATION IN MOBILE HOMES GREENHOUSES OR ENVIRONMENTS INVOLVING DUSTY WET CORROSIVE OR EXPLO
14. Home Direct Vent Furnace 10 Years 10 Years Cozy Gas Fired Hi Efficient Direct Vent Wall Furnace 10 Years 10 Years Cozy Gas Fired Direct Vent Baseboard Heater 10 Years 10 Years Cozy Fan Type Direct Vent Through The Wall Gas Heater 10 Years 10 Years Cozy Blue Flame Vent Free Heater NIA 10 Years Cozy Infra Red Vent Free Heater NIA NIA LOUISVILLE TIN amp STOVE COMPANY 7318 13 STREET LOUISVILLE 40210 INNNNNNNNNNNNNNNNNNNNNN NN EPATAATATATATATAATATATATAT d ATATATATATATAT VATATATATATATATATATATATATATAT
15. POSSIBLE CAUSES LL CORRECTIVEACTION Flame on large Defective operator section of pas valve Replace compete valve Bumer orifice too large Check with local gas company for proper orifice size and replace Jt installed above 2 000 f Refer to Burner Orifice Section Pg 12 Flame pop Fuck much primary air Adis ar shutter Sce Page 7 Noisy Pame Tos much primary air Adjust a shaer See Noisy pilor Reduce pilot gar with adjusting screw marked pilot on combination gas control valve See Page 12 Burr in orifice Gf it whistles or Remove burr or replace orifice Do not resonate enlarge orifices Excessive gas input See Flame Too Large above Yellow fame rome litle primary ai Adjust air See page 12 yellow tipping on LP Clogged main burner ports Clean main bummer ports Do not enlarge pors 1s permissible Clogged hoo Clean draft hood Linted up air shutter Check for dust or n at air mixer opening and around the shutter Flouing Tame locked venting Clean flne passage ways to remove Blockage Insufficient primary air Adjust air shuter to increase primary air supply m Chimney or vent Clean chimney or vent Teplice necessary Drafts around appliance Eliminate drafts Gas lesk See Page L Delayed ignition Pilot lame small Check pilot orifice close increase pilor gas Tow W necessary by adjusting at combination contral valve See Page 12 Burner ports clogged ne
16. RNACE SPECIFICATIONS Your floor furnace and drafthood are packed together in one master carton The carton contai furnace also contains the thermostat thermostat wire insulated staples furnace key and lighter rod is packed in its own carton within the master pack and contains screws and rope like gasket material for attaching and sealing the draft hood to the floor furnace Check the model numbers on the two cartons to be sure they match MODELNUMBER NAT GAS 90N30A 90NS0A 90NGSA 90N7SA Hourly BTU Input 30 000 50 000 Width and Length 7 Overall Height Overall Grille Size Size of Floor Opening Gas Pipe Size at Furnace Vent Pipe Size Floor to Center Line of Vent Page2 E e iAFETY RULES WARNING IMPROPER INSTALLATION ADJUSTMENT ALTERATION SERVICE OR MAINTENANCE CAN CAUSE PROPERTY DAMAGE PERSONAL INJURY OR LOSS OF LIFE INSTALLATION ANDSERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER SERVICE AGENCY OR THE GAS SUPPLIER KEEP BURNER AND CONTROL COMPARTMENT CLEAN SEE INSTALLATION AND OPERATING INSTRUCTIONS ACCOMPANYING APPLIANCE DUE TO HIGH SURFACE TEMPERATURES KEEP CHILDREN CLOTHING ANDFURNITURE AWAY FOLLOWALLAPPLICABLE CODES AND ORDINANCES IFTHEREARENONE FOLLOW THEINSTALLATION STANDARDS LATEST EDITION OF NFPASJ ANSLZ223 1 A COPY MAY BE OBTAINED FROM THE AMERICAN GAS ASSOCIATION 1515 WILSON BLVD ARLINGTON VA 22209 OR THE NATIONAL FIRE PROTECTION ASSO
17. SIVE CONDITIONS SUCH CONDITIONS WILL INVALIDATE THE WARRANTY AND MAY CREATE UNSAFE CONDITIONS Installation maintenance service trouble shooting and repairs must be performed by a qualified service agency Mz Mrs Homeowner DO NOT attempt any of these procedures yourself as this could expose you to prop erty damage personal injury or loss of life and will invalidate all warranties Introduction Checking the Gas Piping m Thermostat Installation 10 Lighting To Turn Off Gas Adjusting the Pilot Flame Orifice Charts Adjusting the Main Burner Optional Operation Installation Requirements Furnace Location s Fresh Air for Combustion amp Venting Cutting the Floor Opening Setting the Floor Furnace 5 Maintenance Installing the Draft Hood 6 Trouble Shooting Connecting the Vent Repair Parts Gas Supply and Piping Warranty INTRODUCTION THIS ISAGAS FIRED GRAVITY VENTED FLOOR FURNACE THAT WILL OPERATE SAFELY AND PROVIDE AN EFFICIENT SOURCE OF HEAT WHEN INSTALLED OPERATED AND MAINTAINED AS RECOMMENDED IN THESE INSTALLATION AND OPERATING INSTRUCTIONS READ THESE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING SERVICING OR USING THE APPLIANCE IF YOU DO NOT UNDERSTAND ANY PART OF THESE INSTRUCTIONS CONSULT LOCAL AUTHORITIES OTHER QUALIFIED INSTALLERS SERVICE TECHNICIANS THE GAS SUPPLIER OR THE MANUFACTURER FLOOR FU
18. Staples Wie EJ sioj 1 7838 S 18 as 180 Vase VSS21A1061 W74414 Bushing 26 amp V 7435 20L6D 74313 S 20160 74315 5 201 60 74315 5 20160 Disappearing Bushing maals 240 240 maals 240 Tad 240 ILP Conversion Kit 9200 s_2780 29205 2780 a s arso aoso 2730 T Bumer wPo Bracke TS TO NA NIA 2920 Burner 75 NA NA Na NAT Nal NA mols 2680 Burner wo Bra amp Air Adj 2 suos mos 2730 mols w Pile Generator Q313A 1014 M V 33 3i rooms s 90 3060 s 3960 7008 5 3960 Plo Bumer wlOrifice QSOA 1271 xr mof s 1200 aio i200 74410 1200 74410 1200 Pil Burner wlOrifie Q3SQA 1589 LP x mas s 1200 7445 120 74us s 1200 7215 5 1200 Mounting Screws Pilot 2 sp s 10 sus 1 soi 16 su 1 Pila Tubing w Fitiag x mss mss muss mss Burner Suppor Front ejs 530 mos 630 24036 630 2036 5 630 Burner Support Rear Na 2 50 s 24430 30 2ux S 360 247 420 Iani mels majs 820 716 5 820 74412 2940 Burner Orifice Naural Gas suos 420 744 s 74407 a20 71008 5 420 Burner LP Gas 39_ Taio S420 7160 5 320 74607 4 20 TaWm S 420 Warning Flag ar 24068 s 1200 24068 s 1200 24068 12 00 2068 5 1200 Control GUT I a femos 140 74307 5 1120 74308 s nao 74300 5 1140 Wiring Hames
19. and vent system are adequate and that the vent system is installed to code or pipe manufacturers specifications See Figure 10 g 0 FIGURE 10 JAS SUPPLY AND PIPIN The gas piping system must meet the requirements of local codes or the specifications of the servicing gas supplier It must have adequate capacity to supply the floor furnace and any other appliance within the home with enough gas to maintain the full rated capacities without excessive pressure drop when all appliances are operating at full rate GAS TUBINGANDPIPE SIZES CAPACITY ASPIPESIZES CAPACITY NATURALGAS LP GAS Tong or Topper Tubing engin or INSIDE PIPE DIAMETER Pipe Tubing Outside Diameter Inside Diameter Pipe Feet gur qx Feet ur que fin qa o 278 000 520 000 10 32 005 325 80 275 000 367 000 bo 190 000 350 000 cssc 20 62 000 216 000 189 000 393 000 cssc ho 73 000 152 000 285 000 azo 30 50 000 181 000 152 000 315 000 axo in xao 130 000 24s 000 30 51 000 145 000 129 000 267 000 cuc bo 56 000 115 000 215 000 see 50 37 000 131 000 114 000 237 000 i 50 000 105 000 195 000 121 000 103 000 217 000 Bil on value of LOO Bu per cuie foot specifie graviy Undated Tiguri im Gas IT inches waler column Inr of 0 6 03 PSIG and a pressure drop of 0 3 inch water column pressure
20. ar pilot Clean burner ports Do not enlarge ports Low gus press Check gas supply pressure Pilot decreases in size when main burners Supply piping is inadequately sized Consult local come on 5 utility or competent installer Air shutter open too far Close air shutter to proper setting as outlined in these instructions slight yellow tipping is allowable on gas Drafts around appliance Eliminate drafts Bad venting See Venting Faire vo Main gas off Open manual gas valvex Defective gus valve Replace gas valve Condensation of water Improper venting Sce Venting Burner won t turn off Detective or sucking automatic valve Clean or replace valve Excessive gas pressure The supply gas To correct this situation contact the utility pros not exceed 1 2 supplying the pas pas apur Tias input not checked Recheck gas Clogged orifice Check orifice for clogging IF clogged clean out the hole carefully with a smooth wood toothpick Do not in any way enlarge or distort it Nor enough hear Appliance undersized This is especially wue when a dwelling or room ix enlarged Have the heat Joss calculated and compare 10 the appliance output 70 of input Your gas company installer can supply you with this information If appliance is undersized replace with correct size unit Thermostat set ioo low Seting of thermostat See Lighting and Shutting Down Instructions Incorrect
21. be completed by a qualified installer or service technician See the following orifice chart for the proper orifice for a specific elevation NATURAL GAS SPECIFICELEVATIONS VEINS Uto 1000 1000 8000 7 2 000 4 000 6 000 000 10 000 2 000 4 000 6000 8000 10 0007 NSA 38 2 B WFNA 176 3 51 ONSA 0 31 2 03 47 49 459 50 NGA 26 29 45 B DRDER KIT 49800 44 1 HIGH ALTITUDE KIT ORDER KIT 49800 24 1 HIGH ALTITUDE KIT INGA 36 37 B di WPBA 31 3 3 5 5 RDER KIT 49850 2287 2 HIGH ALTITUDE KIT ORDER 49850 2287 2 HIGH ALTITUDE KIT Al JUSTING THE BURN R After the floor furnace has been burning 15 minutes remove the bottom pan from the outer casing exposing the complete burner assembly Loosen the screw at the bottom side of the sliding air shutter Slide the air shutter closed until yellow tips start to appear at the top of the flame See Figure 19 75 000 BTU floor furnace has two burners both of which may need adjustment Now open the shutter slightly beyond the point that the yellow disappears and the flame burns blue See Figure 20 Airborne dust particles may cause flashes or streaks of yellow flame as they are drawn into the flame but will have no effect on the efficiency of the floor furnace If you are satisfied that the burner is properly adjusted tighten the set screw to lock the shutter in position Replace the botto
22. ective due to Workmanship or material it will replace such part provided parts have not been subjected to misuse alteration neglect or accidents The term of the warranty for the heat exchanger and bumers is covered im Table A below Any claim not made within ten 10 days afier the expiration of the warranty period shall be deemed waived by the user The manufacturer shall have no liability or be required to perform any obligation under this warranty unless when requested the user retums at the user s expense the component or product claimed defective to the manufacturer for inspection to enable the manufacturer to determine if the claimed defect is covered by this warranty No charges for freight expenses incurred in the repair replacement of any product or component claimed 10 defective will be paid by the manufacturer to the labor or other removal or WARRANTY shall request such service directly from the install I the user is unable to locate the installer the us should write directly to the manufacturer and the name of an alternative service source will he supplied The product safety registration card packed inside the appliance must be completed and returned to the factory THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY OTHER WARRANTIES EXPRESS IMPLIED WHETHER WRITTEN OR ORAL ANY IMPLIED WARRANTY OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE IS EXPRESSLY LIMITED TO THE
23. etween the top of the draft hood and floor FURNACE G Minimum joists There must also be at least 6 inches clearance between the fra bottom of the floor furnace and the ground See Figure 3 Went Pipe Hood In order to find the location beneath the floor it may be necessary to Ground drill 1 16 inch hole through the floor approximately in the center of Level 6 Minimum the selected floor furnace location to use as a reference point when S measuring under the floor IGURE3 FRESH AIR FOR COMBUSTION AND VENTING Adequate air for combustion and venting must be provided Any reduction in the necessary amount of fresh air can result in an oxygen starved flame that emits Carbon Monoxide C O an odorless colorless gas that can cause serious injury or death ventilated crawl space will usually provide enough fresh air However you must check to see that there is 1 square inch of free area of ventilation opening for each 1 000 BTUs input of your floor furnace EXAMPLE 50 000 BTU floor furnace 1 000 50 square inches If another gas burning appliance such as a water heater is installed within the same crawl space or basement add the B T U s of the other appliance to those of the floor furnace before calculating the total ventilation needed EXAMPLE 50 000 B T U floor furnace plus 40 000 water heater equals 90 000 B T U 1 000 90 square inches To compensate for the loss of square inches
24. ilure to do so may result in the pan ing to seal off air for combustion and venting If this occurs carbon monoxide C O a colorless odorless gas that can cause serious injury or death may be formed SETTING THE FLOOR FURNACE Lay aside the grill and package containing the thermostat wires ete grasp two opposite sides of the outer casing and lower the floor furnace gently through the opening Support the furnace evenly by the flange at the top of the outer casing Trim back carpet padding and other types of floor covering so that the entire flange rests directly on the floor If not evenly supported on all four sides stresses may be created that cause excessive expansion and contraction noises as the floor furnace heats and cools Anchor the floor furnace in place by driving two galvanized roofing nails through each side of the outer casing into the double headers approximately 1 inch below the flange Place the grill into position making sure it lays flat against the outer casing flange Leave the grill in place until time to light the furnace to keep occupants from falling into the furnace Pages INSTALLING THE DRAFT The draft hood must be installed in the same atmospheric pressure zone as the combustion air inlet The draft hood is packed in its own carton within the master pack Make sure the draft hood received is the correct one for the floor furnace being installed Included in the carton are two rope like
25. injury or death THERMOSTAT INSTALLATION Follow the instructions included with the thermostat Locate the thermostat approximately five feet above the floor Always mount the thermostat on an inside wall where it won t be affected by heat or cold sources such as direct sunlight televisions fireplaces hidden hot or cold water pipe drafts etc The thermostat must never be installed in an adjoining room where a door be closed between the thermostat and floor furnace This floor furnace is equipped with a self generating control system Never connect to a 24 volt transformer or to the household electric system Do not use more thermostat wire than is included with the floor furnace WIRE AS INDICATED See Figure 13 Step 1 Connect black limit switch wire to black thermostat wire using wire nut Nut not furnished Step2 Connect white thermostat wire to terminal on gas valve marked TH Step 3 Connect white limit switch wire to terminal on gas valve marked TH Step4 Connect the thermostat wires to the thermostat following the instructions provided by the thermostat manufacturer LIMITSWITCH WIRES Limit Switches Thermo TERMINALBLOCK ONGAS VALVE FIGURE 13 FOR YOUR SAFETY READ BEFORE LIGHTING WARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal jury or loss
26. k at once Since some soaps may cause corrosion or stress cracking rinse the gas piping exterior with water after testing to remove the soap WARNING Never use a match candle open flame or other method which could provide a source of ignition to test for leaks To do so may result in property damage bo jury or death CAUTION Label all wires priorto disconnection when servicing controls Wiring errors can cause improper and dangerous operation Verify proper operation after servicing Page9 CHECKING THE GAS PIPING CONTINUED Limit Switch Wires When you have determined that there are no leaks in the gas piping system you may purge the system of air Disconnect the pilot supply tubing from the right side of the valve See Figure Turn the knob on the gas valve to the pilot position Press the P knob down and hold until you smell gas at the pilot supply iens opening Release the knob and turn it to the off position Reconnect the pilot supply tubing and check for leaks with soap and water or liquid detergent WARNING When purging gas piping the area around the floor furnace must be well ventilated to allow any gas to dissipate Liquid Petroleum Pressure Ta LP Gas is heavier than air and may puddle in low places under the floor Check thoroughly to determine that no gas is present before lighting the floor furnace Failure to do so could result in property damage bodily
27. m L P Gas 3 5 Inches Water Column 10 0 Inches Water Column OPTIONAL OPERATION Your floor furnace has been designed to meet all safety requirements of the American National Standards Institute and government regulations by offering two modes of operation Figure 21 and turn counterclockwise w until the warning flag is concealed and the damper is open Your floor furnace will now cycle on and off maintaining a moderate grill temperature and an even room temperature Your floor furnace will function best on this setting during mild weather OPTIONT Inmild weather taining a moderate grilltemperature and an even room temperature FIGURE2T FLOOR FURNACE HOT WHEN FURNACE IS IN OPERATION CONTACT OFBARE SKIN WITH GRILL MAY RESULT IN SEVERE BURNS KEEP CHILDREN OFF PROVIDE FENCE OR REGISTER GUARD FOR THEIR PROTECTION OPTION 2 Turn the furnace key clockwise until the warning reading WARNING GRILL IS HOT Keep off cause burns is visible and the damper is closed The limit control will now cease to function and the floor furnace will now putout the maximum amount of heat until the room temperature reaches the thermostat setting Use this option only in extremely cold weather If furnace continues to cycle on limits assure that damper door is 100 closed by adjusting damper door pin if necessary OPTION Inextremely cold
28. m at least 3 feet above the point where it exits the roof and at least two feet higher than any part of the roof system within 10 feet Terminate with a listed or approved cap See Figure 9 MORETHAN ee 0 1 LE RIDGE 2 Minimum CHIMNEYOR T METALPIPE 2 Minimum 3 MINIMUM CHIMNEY OR METAL PIPE 3 MINIMUM FIGURE FIGURE Page7 CONNECTING THE VENT Continued If more than one gas appliance is vented through common vent system the vent should be increased in size to accommodate the increased load Consult your local code or the tables in the latest edition of NFPAS4 ANSIZ223 1 for the Typical Installation Using correct size If no local codes apply use the Class B Vent Pip following alternate method for sizing a vent connected to more than one appliance The effective area of the vent must be not less than the area of the largest vent connection plus 50 percent of the areas of additional draft hood outlets Adequate clearances around floor furnace Draft Diverter 6 from combustibles Adequate clearances around vent pipe Horizontal vent pipe sloping upward 1 4 per foot Pipe supported with metal straps Adequate height of vent system Listed vent cap The homeowner appreciates neatness in workmanship and the neat installation usually functions better than the sloppy one Double check your work to verify thatall clearances around the floor furnace
29. m pan Check air shutter setting at least twice each season to assure that changing conditions are not causing yellow tipping Manifold Tube Sliding Air Shutter Cm qe pe Lp FIGURE IS FIGURE I9 FIGURE20 Page 12 ADJUSTING THE BURNER Continued If difficulty in adjusting the burner is experienced it may be the result of incorrect gas supply pressure or manifold pressure Pressure can only be checked and adjusted by a trained service technician using instruments designed for that purpose WARNING Do not attempt to change pressure settings without proper training and instruments To do so may cause your floor furnace to malfunction resulting in property damage bodily injury or death The following information is provided for use by a trained service technician with measuring instruments Minimum Inlet Pressure Natural Gas Minimum Inlet Pressure Liquefied Petroleum L P Gas Maximum Inlet Pressure for Natural Gas Maximum Inlet Pressure Liquefied Petroleum LP Gas 4 5 Inches Water Column 11 0 Inches Water Column 7 0 Inches Water Column 14 0 Inches Water Column IE the inlet pressure is found to exceed 14 0 inches water column check the performance of the control valve thoroughly as damage may have occurred If manifold pressure cannot be adjusted replace the control valve Manifold Pressure Natural Gas Manifold Pressure Liquefied Petroleu
30. n and part number please number and type of gas used This information can be found on the rating plate that is attached to heater ive model number serial Page 17 MODEL NUMBER NAT 90N30A 90N50A 90N65A 90N75A REP PART UST rakr PART UST TARr PART DESCRIPTION No PRICE NO PRICE NO PRICE NO PRICE Exchanger with Gasket T EEN EEE 2489 5 Gasket Heat Exchanger NA s aso sso 745225 720 74835 5 880 Liner Complete Assembly 3 30570 23980 18270 24580 19760 24580 5 24900 Grile Flor 3 s 17460 24175 s 221 90 24475 5 28280 24675 5 331 50 Casing Complete Assembly 3 319620 mns 22460 3 S 25 40 BAAD 5 770 Glas Assembly gasket not included 10 s 930 23150 s 930 231505 930 23180 9 30 valve Rod 2ams s asoj 24035 5 asof 24035 5 246005 460 13 1 asso zous 18 zous 160 Key Furnace s Le 10 7205 5 1 mss 18 instruction Plt Lighting 16 s se pss s ose s 56 91255 500 Valve Rod Indicator Pte 5230 2445 2 24085 230 24MS S 230 Assembly E S 5 2US s 3930 2 477 S 10290 24676 T0860 Drafthood Gasket wiSerews 9 s moms 5 22077 5 5 24077 5 59 Thermostat ar 2460 74392 24 00 74592 260 745905 2460 Wire Thermostat 207 EJ 170 10 Tas S 170 170
31. of life This appliance has a pilot which must be lighted by hand When lighting the pilot follow these instruc tions exactly 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 IFYOUSMELLGAS Do not try to light any appliance Do not touch any electric switch do not use any phone in your building LIGHTING STOP Read the information on the safety label Set thermostat to lowest setting Remove the floor grille Place the furnace key on the control rod push down slightly and turn clockwiseZ M to ALL OFF NOTE Control rod cannot be OFF unless the control rod is pushed down slightly 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 information on the safety label If you don t smell gas go to the next step Remove the sight glass assembly from the opening on top of the heat exchanger Locate the pilot burner looking down through the sight glass opening Turn the control rod counterclockwise until the pointer is on PILOT Set the thermostat to it s lowest setting Allow floor grille to cool then remove Place furnace key on control rod push slightly and tum clockwise 7 N to ALL OFF Do not force Replace floor grille Immediately call your gas supplier from a neighbor s phone
32. plugged dos Gas Bikes i Ge ae ay Pres Th upply upstream of the gas supply connection to the P Line floor furnace 5 Provide a sediment trap at least 6inches long to ius trap dirt amd maistre Provide space to pert cleaning or emptying leg amp Usenground joint unton 3 Install an approved mal FIGURE ADDITIONALL P GAS REQUIREMENTS 8 Haye all connections made at the storage tank by a licensed L P Gas installer 9 Have L P Installer check all lines piping and connections from the storage tank to the floor furnace when the floor furnace is connected to the storage tank 10 The regulator on the storage tank should be set at 11 inches water column CHECKING THE GAS PIP AIL joints must be tested for leaks by applying pressure to the piping system If the test pressure is equal to or less than V PSIG the floor furnace must be isolated from the gas supply piping system by closing the manual gas shut off valve on the floor furnace Ifthe test pressure exceeds 4 PSIG the floor furnace and its manual gas shut off valve must be disconnected from the gas piping system before testing Failure to do so may result in damage to the pressure regulator in the gas valve resulting in overfiring Overfiring can result in combustion chamber failure propert damage bodily injury or death Use a mixture of soap and water or liquid detergent to check each joint Leaks will be indicated by bubbles forming Correct even the smallest lea
33. r state codes require that your floor furnace installation be inspected by local authorities do so after the floor Furnace stalled and before it is put into service Page3 FLOOR FURNACE LOCATION Choose a central location such as a hallway but where occupant traffic is minimal and where there is at least 18 inches of room from two adjoining sides of the grill to the nearest wall so that occupants may pass without stepping on the grill See Figure Number 1 8 Minimum Vent Pipe Bedroom oa iium _ LL 5h Bedroom Living Room FIGURE 1 FIGURE2 Give consideration to available air for combustion location in relation to chimney or vent system thermostat location clearance under floor clearance to combustibles and heat circulation Any open foundation is unacceptable as wind can cause pilot outage and reduced efficiency Keep furniture drapes doors and other combustible materials at least 12 inches from the edge of the grill Never locate the floor furnace closer than 8 inches to a wall and never in a corner See Figure 2 Two adjoining sides of the floor furnace must have a minimum clearance of 18 See Figure 1 FOE HUGE After selecting a location in the home go beneath the floor and check the position of the floor furnace in relation to joists supporting vio varese Thrace acum FLOOR Te of 6 inches clearance b
34. size vent listed for each furnace on Page 2 of these instructions We do not recommend doing so but if you must vent into masonry chimney use the following instructions Continued next page Page yu her SAFE FIGURE7A RECOMMENDED FIGURE 7C If the floor furnace is vented into a masonry chimney the chimney must be inspected to determine that itis clear and free of obstructions and that it is safe for the intended use The inside of the chimney must be at least 6 inches in diameter or 6 inches by 6 inches if rectangular Insert the vent pipe into the chimney through masonry or noncombustible corrosion resistant thimble of the correct diameter Do not push the pipe farther than 14 inch into the inside of the chimney See Figure 7A Pushing the pipe farther into the inside of the chimney may cause partial or complete blockage as illustrated in Figure 7B Even following these instructions you may still have a venting problem because of the larger area to be heated inside the chimney This could cause pilot outage odors coming from the furnace or noise due to excessive heat not being vented out of the combustion chamber If you experience any of these problems we recommend running the proper size B type vent pipe down the chimney and connecting to the horizontal run of vent pipe with a 90 degree elbow inside the chimney See Fig 7C Extend the vent syste
35. t may be difficult to fit the floor furnace into the opening Forcing the floor furnace through the opening may create stresses that cause the floor furnace to be excessively noisy Most installation will require cutting a floor joist Cut the floor joist so that double headers of the same size lumber can be used to frame around the floor furnace Double headers are necessary to maintain the strength of the floor See Figure 4 If the clearance between the bottom of the floor furnace and the ground is not adequate dig a pit that will provide clearances of at Teast 6 inches under the floor furnace 18 inches on the end where the gas valve is located and 12 inches on the other three sides Slope the sides of the pit to prevent dirt from caving into the pit See Figure 5 FLOOR FURNACE Hye Minimum Mili her FIGURES If there is any possibility that water may accumulate in the pit drain must be provided If a drain cannot be provided fabricate waterproof pan of at least 16 ounce per square foot sheet copper or a suitable substitute Size the pan to provide 6 inches clearance to the bottom of the floor furnace 18 inches on the side where the gas valve is located and 6 inches on the other three sides The sides ofthe pan must extend at least 4inches above the ground Anchor the pan to prevent it from floating up against the bottom of the floor furnace when water is present Fa
36. wise to BURNER position Remove furnace key and replace the floor grille Set thermostat to desired temperature VENTSYSTEM After the floor furnace has been burning for five minutes hold match or candle under the draft hood at the air intake area If the vent system is working properly the flame will be pulled into the air inlet of the draft hood If the vent system is not working properly turn the floor furnace off immediately and refer to the installation instructions or local code for proper installation procedure TING THE PILOT FLAME PILOTFLAME ADJUSTMENT Pilot flame should envelop 3 8 to 1 2 inch of the tip of the generator Refer to Figure 17 forthe correct size pilot flame If adjustment is necessary referto Figure 12 for the location of the pilot adjustment screw Using standard screwdriver remove the pilot adjustment screw cover Insert small screwdriver into the pilot adjustment screw and turn clockwise to decrease the flame or counterclockwise W toincrease the flame Ifthe flame is too low the safety pilot may cause all of the gas to be cut off NOTE The gas supply to the pilot is unregulated When line pressure exceeds 7 Natural Gas or 11 L P Gas a pilot adjustment must be made BURNER ORIFICE OO This appliance is orificed at the factory for elevations up to 2 000 feet If installed above 2 000 feet the BTU input must be reduced 4 per 1 000 feet Orifice change must

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