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Downfl ow, Direct Vent (Sealed Combustion)
Forced Air Gas & Oil Furnaces
Installation Instructions
For installation in:
Series M1B, M1G, M1M & M5S
• Manufactured Homes
• Recreational Vehicles, Park Models, &
Manufactured Buildings
• Modular Homes/Buildings
ATTENTION INSTALLERS:
It is your responsibility to know this product
better than your customer. This includes
being able to install the product according
to strict safety guidelines and instructing the
customer on how to operate and mainta
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SAFETY INFORMATION .............................. 3 Operating Instructions - Oil Gun ..............22 Operating Instructions - Gas Gun ............22 REQUIREMENTS & CODES ........................ 3 How to Shut Off Gas - Gas Gun ...........22 Burner Adjustments .................................22 GENERAL INFORMATION ........................... 5 Gas Pressure .......................................22 Warranty Information ................................5 Pilot Flame .........................
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SAFETY INFORMATION Safety markings are used frequently throughout WARNING: this manual to designate a degree or level of seriousness and should not be ignored. Do not use this appliance if any WARNING indicates a potentially hazardous part has been submerged under situation that if not avoided, could result in water. Immediately call a qualifi ed personal injury or death. CAUTION indicates a potentially hazardous situation that if not service technician to inspect the avoided, may res
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a.) A carbon monoxide (CO) detector and copy of the installation instructions shall alarm shall be placed on each fl oor remain with the appliance or equipment level where there are bedrooms. The at the completion of the installation. detector shall comply with NFPA 720 The information listed below is for reference (2005 Edition) and be mounted in the purposes only and does not necessarily have living area outside the bedroom(s). jurisdiction over local or state codes. Always b.) A (CO) de
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• American National Standard (ANSI-119.2/ • Adding a Roof Jack extension because of NFPA-501C) for all recreational vehicle unusual wind and/or snow conditions. installations. • Revising installation of the furnace flue • CANADA: CAN/CGA-B149.1 and .2–M00 assembly (Roof Jack). National Standard of Canada. (NSCNGPIC) • Adjusting or calibrating of thermostat. • Any construction debris which falls into fl ue GENERAL INFORMATION system. Manufacturer Warranty - Owner’s Responsibilities Minimum Cle
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18" (457 mm) 6" (152 mm) 1" (25 mm) 19 3/4" 23 3/4" Applications M1 Series gas and M5 Series oil furnaces are 6" (152 mm) listed direct vent (sealed combustion), downfl ow Top Clearance heating appliances for manufactured (mobile) homes, recreational vehicles, and for use in residential/modular/commercial construction. Removable access The furnace must be located so that venting can panel should be 0" Side installed above Clearance be properly achieved. furnace door frame to Furnace to a
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CIRCULATING AIR REQUIREMENTS CAUTION: WARNING: HAZARD OF ASPHYXIATION: Do not Do not allow combustion products cover or restrict return air opening. to enter the circulating air supply. • Means shall be provided that prevent Failure to prevent the circulation inadvertent closure of fl at objects placed over of combustion products into the the return air opening located in the fl oor of the closet (versus the vertical front or side wall). living space can create potentially • The total f
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Location, size, and number of registers should • The M1 Series gas and M5 Series oil furnace be selected on the basis of best air distribution is certifi ed for use on wood fl ooring or supports, and fl oor plan of the home. The supply air must but must be installed on top of a duct connector. be delivered to the heated space by duct(s) This factory supplied accessory must be secured to the furnace casing, running full installed in the fl oor cavity and attached to the size and without interrup
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20" 14 1/2" 2 3/4" FLOOR OPENING C L “X” REAR WALL OF CLOSET OR ALCOVE SUPPLY AIR DUCT 2 1/4" FLOOR CAVITY Figure 9. Floor Cavity FLOOR CUT-OUT C FOR STANDARD L DUCT CONNECTORS Duct Connector If Floor Cavity Type & Part Number “X” is: Standard Duct Round Duct CUT-OUT FOR 1 3/4" C L C C OPTIONAL L L 7/8” / (22) 901987A 904008 COOLING COIL 3/4" C 2” / (51) 901988A 904009 C L L 4-1/4” / (108) 901989A 904010 1 3/4" ALT FUEL-LINE FUEL 2" ENTRY 1 1/4" Dia. 6-1/4” / (159) 901990A 904011 LINE 3/4" FURN
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Cut Here Cut Here Duct connector tabs Staples or sheet metal screws DUCT CONNECTOR Narrow Narrow Duct SUPPLY Duct AIR DUCT Duct Flap Duct BEND TABS TIGHTLY Connector AGAINST SUPPLY AIR DUCT Sheet metal Narrow screws Duct Figure 10. Duct Connector Tabs Figure 12. Narrow Ducts Alternate Attachment Method Round Duct Connector Installation The standard duct connector is designed for 1. Apply a bead of caulking, mastic, or other use on ducts 12” in width. However if there is approved seala
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SUPPLY AIR DUCT FUEL LINE HOLES Knockout Over Holes ROOF JACK INSTALLATION SCREWS MOUNTING PLATE Required ceiling and roof cut-out openings (see DUCT CONNECTOR Figure 11) must be carefully located to avoid misalignment of the furnace and Roof Jack. Note: Install only Roof Jack Assemblies listed in Table 4 on this heating appliance. FUEL Roof Jack Selection LINE HOLES 1. Determine depth of ceiling cavity from center of roof opening to center of ceiling opening. 14” SUPPLY (See Dimension “A
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1. Locate center of Roof Jack opening, measure 13 1/2” from the rear wall of closet or alcove along the center line of furnace and fl oor opening. See Figure 19. 2. Cut ceiling and roof holes as follows: • Ceiling = 8 3/4” (222 mm) diameter • Roof = 9 3/8” (238 mm) diameter IMPORTANT: Refer to the installation Figure 17. Example of Flat Jack with Flashing instructions provided with optional air conditioning packages when installing furnaces with optional cooling coil cabinet or with opti
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Installing The Roof Jack Secure roof jack with 1. Apply caulking compound on underside of roof appropriate fasteners fl ashing to form a continuous strip at least 3/8” after connecting to furnace wide around the underside of the perimeter of the fl ashing. See Figures 20 or 21. 2. Connect Roof Jack Assembly to the furnace. Insert telescoping Roof Jack Assembly through Caulk under roof Roof the opening cut on the roof. flashing to prevent water leakage 3. Connect fl ue pipe to fl ue collar of fur
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4. The four warning tags supplied must be ELECTRICAL INFORMATION installed as follows: • To weather cap WARNING: • To fuel line connection point (Gas) or furnace burner (Oil) To avoid electric shock, personal • To furnace fl ame observation door (Gas or injury, or death, turn off the electric Oil) • To furnace wall thermostat power at the disconnect or the 5. Transit-mode weather cap to be removed and main service panel before making upper Roof Jack crown installed (See Figure any elect
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Connecting Power Supply Wires Verifying Anticipator Setting 1. Remove the furnace control panel cover. After the furnace is installed, check the thermostat 2. Route wires (115 VAC) through the strain anticipator against the nominal setting of 0.4. relief on the left side of the furnace control box 1. Connect the milliamp meter in series with one (see Figure 24). of the gas valve’s low voltage terminals. 3. Connect the hot wire to the black pigtail lead, 2. Energize the gas valve. and the neu
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Floor Cavity FUEL SUPPLY AND PIPING Fuel line installations other than typical installations shown in Figures 26 and 27 (page 17) must comply with the fuel piping WARNING: provisions stated in the Federal Manufactured Home Standard (H.U.D. TITLE 24, PART 280) All piping must conform with local and the National Fuel Gas Code (ANSI-Z223.1/ building codes, or in the absence NFPA-54). of local codes, with the most recent • Optional fuel inlet lines are available for all edition of the Nati
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For L.P. gas, pressure to the gas valve must be One Line System more than 11” W.C. but not more than 13” W.C. The one line system is highly recommended Pressure is reduced to 10” W.C. by the pressure where vertical lift, from bottom of tank to pump, regulator in the gas valve. is less than eight feet (Figure 27). A single line hookup has the advantage of lower cost and quieter operation. CAUTION: Two Line System Furnace conversion must be per- If a two pipe system is used or if oil is taken
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5. Open the furnace door and connect the oil line to a dedicated pump prime mode, during to the intake port on the pump. Tighten other which the motor, igniter and valve are powered port plugs on the pump. NOTE: Verify the oil for 4 minutes. The yellow LED will be on. line is airtight! Air leaks can cause the pump NOTE: If prime is not established during the to lose prime and will create other problems four minute pump prime mode, repeat step 3 such as nozzle failure, odors, rumbling noise,
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T T P A A L N N 6. For Honeywell gas valves with the regulator OR converter (Figure 28, page 19): a. Unscrew the pressure regulator cap and check for the letters NAT or LP. PRESSURE OTHER SIDE REGULATOR b. Invert the cap and tighten until snug. OF CAP CAP 7. For Robertshaw gas valves with the regulator converter (Figure 29): a. Remove the black cover and unscrew the converter located on top of the gas valve. b. Invert the converter: for LP the red ring will be located at the bottom and t
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STARTUP AND ADJUSTMENTS Lighting Instructions - Standing Pilot Models. 1. Set the thermostat to the lowest setting. PLEASE READ ALL SAFETY INFORMATION 2. Turn off all electric power to the appliance. BEFORE LIGHTING THE FURNACE 3. Remove the furnace door. 4. Push in and move the gas control lever to the OFF positon (Figure 30). DO NOT FORCE! WARNING: 5. Wait 10 minutes to clear out any gas. If you smell gas, STOP! and read the Safety Information. FIRE OR EXPLOSION HAZARD If you don’t smell
