United States Stove 1303 Furnace User Manual
Contents
1. Power Failure Instructions Operation after loss of power 1 Remove filter if provided 2 Do not expect to keep home at normal temperatures Do not load fuel above bottom of feed door Central Installation COLD AIR NA Fig 11 Add On Installation COLD AIR DUCT FURNACE EXISTING GAS OIL ELECTRIC FURNACE FIG 11 B 16 Operating Instructions FUEL MODEL 1303 Hardwood 18 to 26 should be split and air dried seasoned for 6 months LIGHTING 1 Setthe thermostat on HIGH for maximum draft 2 Open the feed door and place paper and kindling on the grate for starting the fire 3 Light fire and close feed door 4 Add wood after fire is burning briskly Be careful not to smother the kindling fire 5 Set thermostat for desired temperature MEDIUM setting is normally satisfactory Set higher or lower for your comfort ADDING FUEL When starting a fire use small amounts of fuel This will allow for more complete combustion and less buildup of tars or soot in the chimney 1 Setthermostat to HIGH before opening feed door 2 Wood Fire Model 1303 Add wood to a convenient level CAUTION DO NOT OPERATE WITH THE FEED AND TION OPERATION WITH ANY OF THESE DOORS OPEN WILL OVERHEAT AND DAM AGE THE FURNACE CAUTION NEVER USE GASOLINE GASOLINE TYPE LANTERN FUEL KEROSENE CHARCOAL LIGHTER FLUID OR FLAMMABLE LIQUIDS TO START OR FRESHEN UP A FIRE IN THE FURNACE WARNING2. The chimney should be inspected at least twice monthly during the heating season to deter mine if a creosote or sootbuild up has occurred If creosote or soot has accumulated it should be removed to reduce the risk of a chimney fire Chimney fires burn very hot If the chimney catches fire immediately call the fire depart ment then reduce the fire by closing the inlet air control Pour a large quantity of coarse salt baking soda or cool ashes on top of the fire in the firebox CAUTION A chimney fire may cause ignition of wall studs or rafters which you thought were a safe distance from the chimney If you have a chimney fire have your chimney inspected by a qualified per son before using again Trouble Shooting Tips for Warm Air Furnace LIST OF PROBLEMS POSSIBLE CAUSE SOLUTIONS 1 Smoking when feed door is open 2 Furnace does not heat 3 Blower does not run 4 No air from registers fan running 5 Air from registers is not hot a Insufficient Draft b Clogged chimnev or chimnev connector c Down draft in chimnev a Wood not seasoned and dry b Blower control set too low c Insufficient flue draft a Improperly wired b Bad blower control c Bad relay d Bad blower motor a Registers are closed b Duct work improperly installed c Improper wiring between cen tral furnace and Model 1303 a Blower control is set too low b Bad blower control 6 Blower runs to
3. HOTBLAST MODEL 1303 Owners Manual SOLID FUEL WARM AIR FURNACE ASSEMBLY INSTALLATION OPERATION REPAIR PARTS CAUTION IMPROPER INSTALLATION READ ALL INSTRUCTIONS CAREFULLY MAY VOID YOUR WARRANTY BEFORE STARTING THE INSTALLATION SAVE THIS MANUAL FOR OR OPERATING THE FURNACE FUTURE REFERENCE FOR PARALLEL INSTALLATION WITH EXISTING AIR GAS OR OIL FIRED FURNACE OR FOR INSTALLATION AS A CENTRAL FURNACE DO NOT USE THIS FURNACE IN A MOBILE HOME OR TRAILER UNITED STATES STOVE COMPANY Vesey 227 Industrial Park Rd P O Box 151 South Pittsburg TN 37380 E z 423 837 2100 85759 12 96 CONGRATULATIONSI You ve purchased one of America s Finest Wood Burning Heaters By heating with wood and coal you re helping CONSERVE AMERICA S ENERGY Wood is our Renewable Energy Resource Please do your part to preserve our wood supply Plant at least one tree each year Future generations will thank you NOTE YOUR UNIT MUST BE INSTALLED BY A QUALIFIED FURNACE INSTALLER IMPROPER INSTALLATION COULD VOID YOUR WARRANTY NOTE See Page 5 First Paragraph Tools And Materials Needed TOOLS MATERIALS Pencil 6 Pipe 6 Elbow Collar and Thimble 6 Foot Folding Rule or Tape as required 24 gauge min Tin Snips 1 2 Sheet Metal Screws Drill Hand or Electric 6 Inside diameter Listed Residential Type Drill bit 1 8 dia or Building Heating Appliance Chimney For Sheet Metal Screws
4. NEVER STORE FLAMMABLE LIQUIDS ES PECIALLY GASOLINE IN THE VICINITY OF THE FURNACE ADJUSTING BLOWER LIMIT CONTROL SET TINGS The temperature in the plenum of the warm air furnace at which the blower turns on or turns off is controlled by the setting of the pointers in the blower limit control See Fig 12 These point ers may be adjusted to achieve the desired warm air output from the furnace See Fig 12 Below 1 Moving both pointers towardthe right counter clockwise this increases the temperature set ting at which the blower will turn on and off 2 Moving both pointers toward the left clock wise this decreases the temperature setting at which the blower will turn on and off 3 Moving the pointers away from each other will increase the time that the blower will run on each warm air cycle BLOWER FAN OFF POINTER BLOWER FAN ON POINTER BLOWER LIMIT POINTER amp STOP Service Hints Do not expect a furnace to draw is the chimney that creates the draft Smoke spillage into the house or excessive buildup of water or creosote in the chimney are warnings that the chimney is not functioning properly Correct the problem before using furnace Possible causes are 1 The connector pipe may be pushed into the chimney too far stopping the draft Fig 6 Do not connect two furnaces or a stove and furnace into the same chimney flue The chimney used for a furnace must not be used to
5. or existing masonry chimney See Page 8 Screw Driver Blade Type Electrical Wiring Gloves 6 Draft Regulator Sabre Saw 1 2 Conduit Conduit Connectors 5 16 Nut Driver or Furnace Cement 5 16 Socket w Ratchet Manufacturer Recommends Safety Glasses Rutland Black Code 78 or Equivalent Plenum and Duct work as required CAUTION LABELS Vour Furnace has the following labels Read and obev all labels DANGER RISK OF FIRE OR EXPLOSION DO NOT burn garbage gasoline drain oil or other flammable liquids WARNING FIRE HAZARD DO NOT operate with fire draft exceeding 06 inches w c DO NOT operate with fuel loading or ash removal doors open DO NOT store fuel or other combustible material within the marked installation clearances DO NOT store fuels paints thinners flammable liquids or other highly volatile substances in the furnace room CAUTION HOT SURFACES Keep children awav Do not touch during operation SAFETV NOTICE If this heater is not properly installed a house fire may result For your safety follow the installation directions Contact local building or fire officials about restrictions and installation inspection requirements in your area Rules for safe installation and operation Read these rules and the instructions carefully Failure to follow them will cause a hazard that could result in death serious bodilv injurv and or propertv damage 1 2 15 Check your local codes
6. INSTALLATION A COLD AIR RETURN TO EXISTING DUCT WORK EXISTING FURNACE MODEL 1303 FURNACE INSTALLATION B PLENUM COLLECTOR BOX TO EXISTING DUCT WORK COLD AIR WARM AIR RETURN EXISTING FURNACE MODEL 1303 FURNACE INSTALLATION G PLENUM ELBOW TO EXISTING DUCT WORK COLD AIR RETURN WARM AIR PLENUM TOP OPTIONAL EXISTING FURNACE MODEL 1303 FURNACE 21 INSTALLATION D 2 MINIMUM CLEARANCE eee OPTIONAL PLENUM FAN CONTROL LOCATION ANTI BACKDRAFT FURNACE PLENUM FLAPPER EXISTING FURNACE SOLID FUEL FURNACE 2 MINIMUM CLEARANCE 1 COLD AIR RETURN BAFFLE FURNACE PLENUM EXISTING FURNACE SOLID FUEL FURNACE INSTALLATION F 2 MINIMUM CLEARANCE COLD AIR RETURN FURNACE PLENUM EXISTING FURNACE SOLID FUEL FURNACE 2 MINIMUM CLEARANCE CENTRAL N FURNACE SOIN INSTALLATION RETURN TO FILTER BOX SOLID FUEL FURNACE OWNERS MANUAL HOW TO ORDER REPAIR PARTS OR OPTIONS THIS MANUAL WILL HELP YOU TO OBTAIN EFFICIENT DEPENDABLE SERVICE FROM THE FURNACE AND ENABLE YOU TO ORDER REPAIR PARTS CORRECTLY KEEP IN A SAFE PLACE FOR FUTURE REFERENCE WHEN WRITING ALWAYS GIVE THE FULL MODEL NUMBER WHICH IS ON THE NAMEPLATE ATTACHED TO THE FRONT OF THE FURNACE WHEN ORDERING REPAIR PARTS OR OPTIONS ALWAYS GIVE THE FOLLOWING INFORMATION AS SHOWN IN THIS LIST 1 The
7. PART NUMBER 2 The PART DESCRIPTION 3 The MODEL NUMBER 1303 4 The SERIAL NUMBER BEFORE INSTALLING YOUR HEATER FILL IN THE SERIAL NUMBER IN THE SPACE PROVIDED ABOVE FOR YOUR RECORDS UNITED STATES STOVE COMPANY 227 Industrial Park Rd P O Box 151 South Pittsburg TN 37380 423 837 2100
8. The installation must comply with their rulings Do not install this furnace in a mobile home or trailer Always connect this furnace to a chimney and vent to the outside Never vent to another room or inside a building Do not connect this furnace to an aluminum Type B gas vent This is not safe and is pro hibited by the National Fire Protection Association Code This furnace requires a masonry or listed factory built chimney for residential type or building heating appliance chimney Use a 6 diameter chimney or larger that is high enough to give a good draft See Page 8 Be sure to use a masonry chimney that it is safely constructed and in good repair Have the chimney inspected by the Fire Department or an inspector Inspect chimney connector and chimney before and frequently during the heating season for any deposit of creosote or soot which must be removed See Chimney Maintenance page 18 Provide air for combustion into the room where the furnace is located If the intake is not in the same room air must have free access to the room CAST IRON PARTS MUST BE SEASONED TO AVOID CRACKING BUILD ONLY SMALL FIRES ON FIRST USE To prevent injury do not allow anyone to use this furnace who is unfamiliar with the correct operation of the furnace For further information on using your furnace safely obtain a copy of the National Fire Protection Association NFPA publication Chimneys Fireplaces and Solid Fuel Burning Appliances NF
9. marked on the furnace The chimney connector must be con nected to a chimney suitable for use with resi dential type or building heating appliances which burn solid fuel The Model 1303 Furnace is designed to operate in a parallel air flow arrangement with an existing central furnace or as a central fur nace The furnace is designed to operate in either of the following installations PARALLEL INSTALLATION The design is suchthatwhen the blower comeson the blower will only come on when the temperature in the plenum has reached the setting on the blower control This is to insure that there is sufficient warm air inthe system to make it efficient for the unit to operate When the central svstem ther mostat calls for heat the central svstem will operate by the burner igniting and the blower coming on It is possible that both systems will operate simultaneously It is recommended that for the most efficient use of your Supple mental Furnace that it be fired as much as possible in order to reduce the demand on your existing central heating system The Warm air supply outletofthe Supple mentary Furnace shall not be connected to the cold air return inlet of the central furnace be cause the possibility exists of components of the central furnace overheating and causing the centralfurnace to operate otherthan is intended CENTRAL FURNACE INSTALLATION As a central furnace the unit functions independently of any other system The blo
10. LING TO TOP OF CONNECTOR 6 ELBOW o SOLID DAMPER 6 BAROMETRIC DRAFT REGULATOR OPTIONAL 6 CHIMNEY CONNECTOR NON COMBUSTIBLE WALL Chimney Connection Fig 4 MASONRY CHIMNEY Before using an existing masonry chimney clean the chimney and inspect the flue liner to be sure itis safe to use Make repairs before attaching the furnace See page 4 item 5 Look at Fig 4 The connector pipe and fittings you will need to connect directly to a masonry chimney are shown The chimney connection should be as short as possible If the connector pipe must go through a combustible wall before entering the masonry chimney consult a qualified mason or chimney dealer The installation must conform to local fire codes and N F P A 211 DO NOT CONNECT THIS FURNACE TO A CHIMNEY FLUE SERVING ANOTHER APPLI ANCE The chimney used for a furnace must not be used to ventilate the cellar or basement If there is a cleanout opening at the base of the chimney close it tightly REFER TO CHIMNEY MANUFACTURER S INSTRUCTIONS AND PARTS 6 SOLID DAMPER 6 e DRAFT REGULATOR S 7 OPTIONAL 6 CHIMNEY CONNECTOR IL Su 6 ELBOW LISTED FACTORY BUILT CHIMNEY Carefully follow chimney manufacturer s instructions Use only a Listed Residential Type Building Heating Appliance Chimney If your chimney starts at the ceiling Fig 5 you will need enough 6 pipe to reach the ceiling The top of the chimney
11. PA 211 The address of the NFPA is Batterymarch Park Quincy MA 02269 Keep the ash pit section free of excess ashes Do not allow ashes to stack higher than the sides of the ash pan DISPOSAL OF ASHES Place ashes in a metal container with a tight fitting lid Keep the closed container on a noncombustible floor or on the ground well away from all combus tible materials Keep the ashes in the closed container until all cinders have thoroughly cooled The ashes may be buried in the ground or picked up by a refuse collector CAUTION The special paints used on your furnace may give off some smoke while they are curing during the first few fires Build small fires at first The metal used in construc tion of the furnace and duct work has a light coating of oil This could give off smoke and or odors from registers when furnace is used for the first time This should disappear after a short period of time Once this burn off has occurred it should not reoccur CARING FOR PAINTED PARTS This furnace has a painted outside jacket which is durable but it will not stand rough handling or abuse When installing your furnace use care in handling Clean with soap and warm water when furnace is not hot DO NOT use any acids or scouring soap as these wear and dull the finish DISCOLORATION WILL OCCUR IF THE FURNACE IS OVERFIRED FOLLOW OPERATING INSTRUCTIONS CAREFULLY Keep the feed and ash doors closed at all times except while ten
12. ding the furnace Your furnace is designed to be installed in a parallel air flow arrangement with a gas or oil fired forced air flow type central furnace or it may be installed as a central furnace 4 How The Furnace Functions Vour Model 1303 Furnace is designed to be a supplemental or central heating source for vour home This solid fuel furnace mav be installed in conjunction with a properly operat ing central furnace that is listed or certified in accordance with nationally recognized safety standards and equipped with the required con trols and other safety features and which has been installed in accordance with appropriate standards of the National Fire Protection Asso ciation with installation clearances specified in the furnace nameplate marking The installa tion mustbe accomplished by a qualified agency one who is engaged in and is responsible for or is thoroughly familiar with the installation and operation of the gas oil and solid fuel burning heating appliances who is experienced in such work familiar with all precautions required and has complied with all the requirements of the authority having jurisdiction The installation shall be in strict accordance with the manufacturer s installation instructions furnished with the solid fuel furnace The chimney connector of the furnace is to be installed to provide clearances to combus tible material not less than specified in the individual classifications and
13. iance with National Fire Protection Association installation stan dards No 89M 90B 211 70 National Electrical Code and Uniform Mechanical Code 913 6 4 in the states where applicable Their code offers connecting smoke pipe connectors into chimney with other fuel burning appliances 3 Rooms large in comparison with size of the appliance a Wood or Coal Burning Furnace needs air for combustion and circulation to house b Provision must be made to make up this air and not starve gas or oil furnace of combustion air c Have Authority Having Jurisdiction deter mine that air is of adequate makeup Reference N F P A Nos 30 amp 54 Code for Installation of Gas amp Oil Equipment 4 Have Authority Having Jurisdiction is to inspect all chimneys and installations for adequate venting and for compliance with standard and local codes and regulations regarding installation of wood burn ing appliances 5 Installation for Supplemental Heat Application to Existing Central System See Fig 2 for typical installation a Place Wood or Coal Burning Furnace so that the chimney connector will be as short as practi cable and avoiding unnecessary sharp turns in the smoke pipe connector and the installation of de vices that would create excessive resistance to the flow of flue gases b Locate the Wood or Coal Burning Furnace as close as practical to the existing central hot air heating system maintaining clearances as stated
14. l cable and should be completed by a qualified installer complying with NFPA Standard No 70 and local codes 9 Optional Plenum Fan Control Switch Part No 11PCS is available for installation on the plenum of central hot air heating furnace The purpose of this switch is to activate the circulating fan of the central hot air heating furnace when the temperature in the plenum exceeds 120 degrees F and shut off the fan when the temperature in the plenum is reduced to 100 degrees F This avoids overheating the plenum The electrical supply for operation of this fan control switch is to be obtained from the same electrical supply as the central hot air heating sys tem See Fig 14 Follow the instructions of the wiring diagram Fig 5 Do not make connections across Limit Control in the furnace Make electrical wire connections in accordance with NFPA Standard No 70 and local codes in the power supply junction box See Fig 15 The wiring to complete the connections should be 18 AWG minimum copper and 90 degrees centigrade in a cable Repair Parts List Model 1303 Cabinet Left Side Cabinet Back Panel Flue Collar Gasket Flue Collar Flue Collar Ring Flue Collar Mounting Bolts 1 4 20x3 4 Flue Collar Mounting Bolts 1 4 20x1 Flue Collar Mounting Nuts 1 4 20 kep nut Cabinet Top Panel Cabinet Right Side Front Upper Panel Right Upper Panel Front Bottom Panel Front Left Panel Firebox Weldment Feed Door Assembiv 40186 A
15. must be at least 3 feet above the roof and be at least 2 feet higher than any point of the roof within 10 feet Fig 5 Rules for Connector Pipe Installation 1 The crimped end of the chimnev connector fits inside the furnace flue collar Install additional chim nev connectors and elbow with the CRIMPED END TOWARD THE FURNACE This will allow any condensation in the flue to run back into the furnace Use 6 dia steel pipe and elbows for connection to chimney Never use less than 24 gauge and al though blued steel is satisfactory high temp painted black is much more desirable 2 Slope anv horizontal pipe upward toward the chimney at least 1 4 inch for each foot of horizontal run 3 You must have at least 18 inches of clearance between any horizontal piping and the ceiling See Fig 3 4 The chimney connector must not extend into the chimney flue See Fig 6 5 Seal each chimney connector pipe joint with fur nace cement Also seal the pipe at the chimney 6 Use 3 sheet metal screws at each chimney pipe joint to make the piping rigid 7 The chimney connector may include a section for abarometric draft regulator between the furnace and the chimney fig 4 5 amp 7 The barometric draft regulator must be installed in the same room same pressure zone as the furnace 8 Install the barometric draft regulator strictly in accordance with the instructions that are provided with the barometric draft regulator 9 A solid dam
16. o long a Blower control cut off set too low 7 Blower does not run long enough 8 Smoke and or odor from registers when furnace is used for first time 9 Creosote buildup 10 Flame spillage when feed door is open a Blower control cur off set too high b Bad blower motor Oil from furnace and duct work a Burning green wood not seasoned or dry b Thermostat setting too low for type fuel a Insufficient draft b Smothering fire when adding fresh fuel a Set thermostat higher b Clean chimney c Add raincap to chimney a Allow wood to season in a dry well ventilated area for 6 mo b Set blower control to higher temperatures c Set flue draft See page 9 a Wire unit properly b Replace blower control c Replace relay d Replace blower a Open registers b Correct ductwork installations c Wire unit properly a Adjust blower control to higher setting b Replace blower control a Set blower control cut off to higher setting a Set blower control cut off to lower setting b Replace blower The metal used in construction of the furnace and duct work has a light coating of oil This should disappear after a short period of time Once this burn off has oc curred it should not reoccur a Burn oniv seasoned wood b Set thermostat higher to at tain higher flue temperatures a Set thermostat higher b Add fuel so as not to smother fire APPENDIX
17. ol for access to screw holes 4 Remove blower from carton and inspect for damage Remove cover from 4 junction box on rear of furnace See Fig 8 5 Attach clip nuts to blower opening on rear of furnace as shown Install blower and gasket using 1 4 20x3 4 bolts provided 6 Complete all wiring in 4 junction box by reference to wiring diagram Fig 9 Page 11 After wiring is completed remember to replace junction box cover Fig 8 Honeywell FAN LIMIT CONTROL 4 ELECTRICAL JUNCTION BOX Ha BLOWER ASSEMBLV NOTE DO NOT USE CLIP NUT OR BOLT GASKET ON UPPER CENTER HOLE 10 Model 1303 Wiring Diagram LOAD FAN BREAK OFF LIMIT FAN OFF LIMIT LINE JUMPERFOR LINE INDICATOR INDICATOR LOW VOLTAGE SS 7 FAN ON INDICATOR Honevwell LIMIT SWITCH WIRE COLOR CODE G GREEN GROUND B BLACK POWER SUPPLY W WHITE POWER SUPPLY R1 WHITE FAN CONTROL R2 BLACK FAN CONTROL M1 BLACK FAN CONTROL M2 WHITE BLOWER MOTOR ELECTRICAL JUNCTION BOX IMPORTANT POWER SUPPLY WIRING MUST NOT BE LESS THAN 90 CENTIGRADE 11 Installation Please see all methods of Installation in Appendix at the rear of this booklet This is a furnace not a free standing stove You mustdirect heated air from 8 outlets away from the furnace or it will not function properly 1 This installation must be done by a qualified heating equipment installer 2 The installation is to be done in compl
18. on the label on the fuel door c Clearance from combustible materials must comply with those stated on the label on the fire door Unit to combustible Front 48 Back 30 Sides 12 Plenum to Ceiling 6 Pipe to combustible Sides 21 Back 18 The installation must be made only on a noncom bustible floor d Install the smoke pipe connector to the chim ney with 26 gauge pipe and elbows to be pur chased separately maintaining the proper clear ances for the specific model Seal the spoke pipe in the chimney with furnace cement The chimney connector shall be securely supported and joints fastened with sheet metal screws or rivets e Install 8 diameter heat pipe to plenum of the central hot air furnace Use 26 gauge pipe and connectors to be purchased separately See Fig 14 If central air conditioning is installed in the plenum install heat pipe above the air conditioning unit Secure heat pipe connection with supports and sheet metal screws f Connect electrical supply in the electrical junc tion box that is mounted on the back of the Model 1303 Furnace See Wiring Diagram Fig 12 or Fig 13 Remove the cover from electrical junction box and connect power supply wires to wires desig nated using wire nuts The power cord supplied may be used for installation if permitted by local codes and regulations If the power cord supplied cannot be used the power supply wiring must be 90 degrees centigrade in a meta
19. per must be used in the chimnev connecting pipes between the flue collar and the chimnev When used in conjunction with a baromet ric draft regulator the solid damper must be placed between the barometric and the chimnev See Fig 4 5 7 Adjusting the Barometric Draft Regula tor 1 Drill a hole in the chimney connector within 18 or the flue collar below the barometric draft regulator just large enough for the tube of the manometer 2 Build a fire after all chimney connections have been made 3 Use amanometer to measure the draft in the flue U S Stove Model DG 26 4 Adjust the Barometric Draft Regulator to obtain a draft of 0 05 0 06 W C under stable fire conditions 9 Al RIGHT NON COMBUSTIBLE INSTALLATION PER NFPA 211 6 SOLID DAMPER 6 rus d DRAFT REGULATOR TAT OPTIONAL MEASURE FLUE DRAFT HERE Fig 7 Assembiv of Furnace Vour furnace requires the following items to be assembled or installed bv the service person BLOWER AND BLOWER CONTROLS ELECTRICAL CONNECTIONS 1 Remove all parts from inside the furnace and inspect for damage Including the firebrick as some damage could have occurred during shipment 2 Place base assembiv in area where furnace will be installed and place furnace on base as shown in Figure 8 Be certain furnace fits inside tabs as shown 3 Install Honevwell Fan Limit Control on rear of cabinet as shown in Fig 8 NOTE Remove cover of Fan Limit contr
20. sh Door Assembiv 40289 Brick Retainer 2ea Rear Liner Firebrick Grate Ash Pan Air Intake Box Air Intake Door Air Intake Box Cover Weldment Thermostat Linkage Thermostat Thermostat Knob Cabinet Bottom Access Plate Door Handle Feed Door Door Handle Ash Door 3 8 Rope Gasket 3 8 Rope Gasket Base Assembly Air Box Cover Gasket Outlet Baffle Weldment Baffle Bracket Front Firebox Liner Grate Liner Support Smoke Curtain Smoke Curtain Bracket Screw 1 4 20x3 4 MS SL FL 1 4 20 Kep Nut Door Hinge Pin Blower Motor Assembly Blower Mounting Bolts 1 4 20x3 4 Blower Clip Nut 1 4 20 J Blower Gasket Cord Strain Relief Bushing Blower Limit Control Junction Box Cover Power Supply Cord Limit Control Flex Conduit Assembly Blower Flex Conduit Assembly Owners Manual Red Spray Silicone Sealant Not Shown N N A a DEN oa aaa co co Po po 1 n Q j ox ox ox on ox MODEL 1303 See Repair Parts List on Page 13 SE V CI ul 18 MIN 2 MIN AIR SPACE REQUIRED BY CODE CENTRAL FURNACE
21. ventilate the cellar or basement If there is a cleanout opening at the base of the chimney it must be closed tightly 4 If the chimney is operating too cool water will condense in the chimney and run back into the furnace Creosote formation will be rapid and may block the chimney Operate the furnace at a high enough fire to keep the chimney warm preventing this condensa tion If the fire burns well but sometimes smokes or burns slowly it may be caused by the chimney top being lower than another part of the house or a nearby tree The wind blowing over a house or a tree falls on top of the chimney like water over a dam beat ing downthe smoke Thetopofthe chimney should be at least 3 feet above the roof and be atleast 2 feet higher than any point of the roof within 10 feet Fig 5 See page 19 for list of trouble shooting tips Chimney Maintenance Creosote and Soot Formation and Need for Removal When wood is burned slowly it produces tar and other organic vapors which combine with expelled moisture to form creosote The creo sote vapors condense in the relatively cool chimney flue of a slow burning fire As a result creosote residue accumulates on the flue lin ing When ignited this creosote makes an extremely hot fire When coal is burned the products of combus tion combine with moisture to form a soot resi due which accumulates on the flue lining When ignited this soot makes an extremely hot fire
22. wer will come on when the plenum temperature reaches the set ting on the blower control 1303 DIMENSIONS Shown in Fig 1 are the dimensions of the furnace Locating the Furnace 1 The furnace should be located in the same room as the central svstem and as close as possible but not closer than 9 There should be no wall between the furnace and the warm air outlet duct that is connected directiv to the warm air outlet plenum of the central furnace See Fig 2 2 Theunitwill require installation with the following clearances Unit to sidewall 12 Unit to 30 Chimnev connector pipe to sidewall HR 20 Chimney connector pipe to backwall RR 18 Hot air ducts to combustibles 6 NOTE Install only on a noncombustible floor REFER TO FIG 2 amp 3 3 Place the furnace on a noncombustible floor 4 Check figures 2 and 3 Be sure you have the clearances shown from the fur nace and the connector pipe to combus tible surfaces If you have a solid brick or stone wall behind your heater you can place the furnace as close as you wish to the wall If the wall is only faced with brick or stone treat it as a combustible wall CENTRAL FURNACE 48 Fig 2 6 SOLID DAMPER 6 BAROMETRIC DRAFT REGULATOR OPTIONAL NON COMBUSTIBLE FLOOR 18 MIN CLEARANCE FROM FROM CEI
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