1 For installation in:1. Manufactured Homes2. Recreational Vehicles, Park Models,Manufactured Buildings3. Modular Homes/Buildings! WARNING:If the information in this manual is notfollowed exactly, a fire or explosionmay result causing property damage,personal injury or loss of life. Do not store or use gasoline or otherflammable vapors and liquids in thevicinity of this or any other appli-ance. WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance. Do not touch any electrical switch;do not use any phone in your build-ing. Immediately call your gas supplierfrom a neighbor s phone. Follow thegas supplier s instructions. If you cannot reach your gas sup-plier, call the fire department.
2 Installation and service must be per-formed by a qualified installer, ser-vice agency or the gas supplier.! WARNING:Should overheating occur, or the gassupply fail to shut off, shut off themanual gas valve to the appliancebefore shutting off the electrical sup-ply.! WARNING:Improper installation, adjustment, al-teration, service or maintenance cancause injury or property damage. Re-fer to this manual . For assistance oradditional information consult a quali-fied installer, service agency or thegas manual /Installation InstructionsSeries M1B, M1G, M1M and M1 SDownflow, Direct Vent (Sealed Combustion) Forced Air Gas and Oil FurnacesLEAVE THESE INSTRUCTIONS WITH THE OF CONTENTS1.
3 SPECIFICATIONS .. 32. OWNERS INFORMATION .. 33. MANUFACTURER WARRANTY, OWNER 34. INSTALLATION 55. UNIT 66. MINIMUM 67. RETURN AIR 68. AIR DISTRIBUTION SYSTEMS .. 89. ROOF JACK 810. DUCT CONNECTOR 911. INSTALLATION .. 1112. INSTALLATION OF TRANSIT-MODE VENTING SYSTEM .. 1413. ELECTRICAL WIRING .. 1514. FUEL 1615. FLUE GAS SAMPLING .. 1916. LIGHTING AND furnace SHUT DOWN .. 2017. SERVICE GUIDE .. 2518. 3019. OPTIONAL 3120. WIRING 34-3921. EQUIVALENT ORIFICE SIZES AT HIGH ALTITUDES .. 40 Table 1. Model IdentificationDoor ColorW - WhiteG - GrayCabinet DimensionsA - 56" x 19-3/4" x 23-3/4 B - w/Coil Cavity, 76" x 19-3/4" x 23-3/4"Electrical CodeA - 1PH, 60 Hz, 120 VACH eating CapacityInput, BTUH (000 )ApplicationM-Manufactured HomeFurnace SeriesFuel, Type of CombustionG-Gas, Direct Vent, Pilot Burner Natural or Forced DraftM-Gas, Direct Vent, HSI, Forced DraftB-Gas, Direct Vent, Gun BurnerS-Oil, Direct Vent, Gun BurnerComfort ModelH - HeatingA - Heating, A/C ReadyB - A/C Ready, 3 TonC - A/C Ready, 4 TonD - A/C Ready, 5 TonM 1 M B - 056 A - B W3!
4 WARNING:Do not use this appliance if any parthas been submerged under call a qualified servicetechnician to inspect the applianceand to replace any part of the controlsystem and any gas control that hasbeen submerged TO INSTALLERI nstaller is advised to follow carefully all instruc-tions and warnings in this manual to insuremaximum performance, safety, and operatingefficiency of these appliances. Improper instal-lation may create hazardous conditions, andwill void the appliance SPECIFICATIONSG eneral DescriptionM1 Series gas and oil furnaces are listed directvent (sealed combustion), downflow heatingappliances for manufactured (mobile) homes,recreational vehicles, and for use in residential/modular/commercial construction.
5 The furnacemust be located so that venting can be conditioning may be added to structures withM1 series furnaces using Platinum series airconditioning or conventional units. This Instal-lation Instruction manual includes special re-quirements for incorporation of air conditioningequipment to the M1 series of blower assemblies as shown inTable 3 have been certified for field installationin M1 Series furnaces. An air conditioner can beeasily field installed with M1GH Series furnacesif used in conjunction with certified 2-wire relaybox, p/n 903092A or 4/5 wire relay box OWNER INFORMATIONABOUT YOUR CENTRALFURNACE SYSTEMNORDYNE has been involved in the design ofproducts for the manufactured home industrysince the first manufactured home or trailer originated the sealed combustionsystem, which separates the furnace combus-tion system from the living area of the home.
6 Now a standard for the manufactured engineers developed the first cen-tral heating system and the first central airconditioner for manufactured is dedicated to bringing to its cus-tomers the finest heating and cooling comfortpossible. NORDYNE constantly seeks to fur-ther refine its products to continuously provideexceptional the instructions in this booklet carefullyand this appliance will provide many years ofsuperior you wish to cool your home automatically witha central air conditioning system investigate theexcellent NORDYNE cooling systems avail-able from your heating and cooling systems are designed to work best withyour NORDYNE furnace and have been care-fully engineered to deliver optimum performancewhen mated with NORDYNE manufacturedhome also offers water heaters.
7 Fire-places and ventilating systems specifically de-signed for manufactured housing with your manufactured home retailer,your heating and cooling contractor or yourdistributor for information. Write directly to thefactory (PO Box 46911, St. Louis, MO 63146)if you are not able to locate a source forNORDYNE manufactured housing products inyour MANUFACTURER WARRANTY,OWNER S RESPONSIBILITIESIt is the sole responsibility of the homeowner tomake certain the gas furnace has been cor-rectly set up and converted to the proper fuel( gas or Natural gas) and adjusted to oper-ate properly. All gas furnaces are manufac-tured for Natural gas and must be field con-verted when using warranty certificate with full details is includedwith these instructions.
8 However, NORDYNE will not be responsible for any costs found4necessary to correct problems due to impropersetup, improper installation, furnace adjust-ments, improper operating procedure on thepart of the user, specific examples of service calls whichcannot be included in warranty payments are:1. Converting the furnace to use another typeof Repairing duct work in the home found to Correcting wiring problems in the electricalcircuit supplying the Resetting circuit breakers, blown fuses orother Correcting problems due to improper gassupply pressure to the Providing instructional training on how tolight and operate the furnace problems caused by installation ofan air conditioner, heat pump or other aircomfort Adding a Roof Jack extension because ofunusual wind and/or snow Revising installation of the furnace flue as-sembly (Roof Jack).
9 10. Adjusting or calibrating of Any construction debris which falls into ReadyModel NoMBtu/h WCBurnerDirectBlowerHpTonsM1GH *M1GB *M1GB *M1GB *M1GB M1MB M1BC Gph Model1/52 M1SC Gph Nozzle1/24M1SB Gph Angle1/43M1SC Gph A1/24 Electrical Supply - 120 volts, 60HZ, 1 or Breaker - 15 ampsTemperature Rise - 45 to 75 FHigh Altitude - See Table 11. For CanadianHigh Altitude (2,000 to 4,500 ), reduce thegas manifold pressure to fornatural gas and to 8 for LP Circuit - 24 volts, 60HZ, 30 vacNormal Anticipator Setting - Pressure - Natural Gas: Gas: 10 *Blower capacity only - needs relay box for ACTable 2.
10 M1 furnace Specifications5 Carefully review these responsibilities with yourmanufactured housing dealer, service com-pany or gas supplier so there will be no misun-derstanding at a later time.! CAUTION: Never attempt to alter or modify thisfurnace or any of its components. Never attempt to repair damaged orinoperable components. Such actioncould cause unsafe operation, explo-sion, fire and/or asphyxiation. If a malfunction has occurred, or ifyou feel that the furnace is not oper-ating as it should, contact a qualifiedservice agency or gas utility for INSTALLATION STANDARDSI nstaller shall be familiar with and comply with allcodes and regulations applicable to the instal-lation of these heating appliances and relatedequipment.