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Series M1B, M1M & M5S

Downfl ow, Direct Vent (Sealed Combustion)
Forced Air Gas & Oil Furnaces

For installation in:

• Manufactured Homes

• Recreational Vehicles, Park Models, 

& Manufactured Buildings

• Modular Homes / Buildings

DO NOT DESTROY THIS MANUAL. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

FIRE OR EXPLOSION HAZARD

• Failure to follow safety warnings exactly 

could result in serious injury or property 
damage.

•  Installation and service must be performed 

by a qualifi ed installer, service agency or the 
gas supplier.

• Do not store or use gasoline or other 

fl ammable vapors and liquids in the vicinity 
of this or any other appliance.

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 building.

•  Leave the building immediately.
• Immediately call your gas supplier from a 

neighbor’s phone. Follow the gas supplier’s 
instructions.

• If you cannot reach your gas supplier, call 

the fi re department.

WARNING:

RISQUE D’INCENDIE OU D’ EXPLOSION

• Le non-respect des avertissements de 

sécurité pourrait entraîner des blessures 
graves, la mort ou des dommages matériels.

• L’installation et l’entretien doivent être 

effectués par un installateur qualifi é,  un 
organisme de service ou le fournisseur de 
gazstaller, service agency or the gas supplier.

• Ne pas entreposer ni utiliser de l’essence ni 

d’autres vapeurs ou liquides infl ammables 
dans le voisinage de cet appareil, ni de tout 
autre appareil.

QUE FAIRE S’IL Y A UNE ODEUR DE GAZ

•  Ne pas tenter d’allumer aucun appareil.
• Ne toucher à aucun interrupteur électrique; 

n’utiliser aucun téléphone dans le bâtiment.

•  Évacuer l’immeuble immédiatement.
• Appeler immédiatement le fournisseur de 

gaz en employant le téléphone d’un voisin. 
Respecter à la lettre les instructions du 
fournisseur de gaz.

•  Si personne ne répond, appeler le service des 

incendies.

AVERTISSEMENT

INSTALLATION INSTRUCTIONS

Summary of Contents for M1B 066

Page 1: ...hbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department WARNING RISQUE D INCENDIE OU D EXPLOSION Le non respect des avertissements de s curit...

Page 2: ...pling 20 STARTUP ADJUSTMENTS 21 Operating Instructions Direct Ignition M1M 22 How to Shut Off Gas Direct Ignition 22 Operating Instructions Oil Gun M5S 22 Operating Instructions Gas Gun M1B 22 How to...

Page 3: ...the current revision of the National Fuel Gas Code NFPA54 ANSIZ223 1 ortheNaturalGasandPropane Installation Code CAN CGA B149 1 CE g n rateur d air chaud doit tre install conform ment aux instructions...

Page 4: ...equipment Behard wired batterypoweredorboth ShallcomplywithNFPA720 2005Edition c A product approved vent terminal must be used and if applicable a product approved air intake must be used Installation...

Page 5: ...he overall size of the furnace and the installation clearances listed in Table 1 and in Figure 4 page 6 Alcove installations minimum 18 clearance at front of furnace shall be provided for future servi...

Page 6: ...e 0 Side Clearance to Furnace Cabinet Provide min 235 sq in 1516 cm open free area in front or side wall 2 or In closet door located at top center or bottom CLOSET DOOR 6 152 mm Top Clearance Provide...

Page 7: ...n the floor or ceiling registers serving the return air duct system must be at least 235 in2 At least one register should be located where it is not likely to be covered by carpeting boxes and other o...

Page 8: ...ellineholesmustbecarefullylocated to avoid misalignment of the furnace and vent piping To locate standard ducts see Figure 6 page 9 For round ducts see Figure 7 1 Measure 10 from the rear wall or alco...

Page 9: ...es X FLOOR OPENING FLOOR CAVITY SUPPLY AIR DUCT Figure 9 Floor Cavity Alternate Attachment Method The standard duct connector is designed for use on ducts 12 in width However if there is insufficient...

Page 10: ...urn air distributionsystemasshowninFigures14 15 page11 1 Remove furnace outer door s and bottom fuel line knockout 2 Placefurnaceontoductconnectorandcenterwithfloor opening 3 Slideontomountingplate Bo...

Page 11: ...in the minimum and maximum range of the Roof Jack listed in Table 4 Application Notes FAW FAWT SAW and SAWT Series Roof Jacks with a 5 diameter inner vent pipe may be used with all models of M1 Series...

Page 12: ...ve along the center line of furnace and floor opening See Figure 19 2 Cut ceiling and roof holes Ceiling 8 3 4 222 mm diameter Roof 9 3 8 238 mm diameter Installing The Roof Jack 1 Apply caulking comp...

Page 13: ...inent location inside manufactured home until on site installation 4 The four warning tags supplied must be installed as follows To weather cap To fuel line connection point Gas or furnace burner Oil...

Page 14: ...operly connected as shown in Figure 25 Route all electrical wiring to the left side of the furnace See Figure 24 For installation of A Cabinet furnaces allow sufficient slack in the wiring if an optio...

Page 15: ...above the control panel 2 Connectthethermostatwirestothefurnacelowvoltage pigtails see Figure 25 3 Connect low voltage circuit to the wall thermostat 4 A hole may be made in the furnace cabinet to eas...

Page 16: ...or property damage This furnace may be installed with left right or bottom gas entry When connecting the gas supply provide clearance between the gas supply line and the entry hole in the furnace casi...

Page 17: ...t pressure Pressure is reduced to 3 1 2 W C by the pressure regulator in the gas valve The maximum inlet pressure for the valve is 7 W C and the minimum inlet pressure is 4 5 W C For L P gas pressure...

Page 18: ...o Line system should only be used if vertical lift exceeds 8 feet 1 Install the oil feed line as outlined in steps 1 6 below 2 Install the oil pump bypass plug in the bottom return port 3 Route the re...

Page 19: ...P gas Use the following procedure for gas conversion of the burner Atmospheric Direct Ignition Furnaces 1 Follow the instructions How to Shut Off Gas page 22 2 Disconnect the gas pipe union and the el...

Page 20: ...nace installation A flue gas sample may be taken from the heat exchanger which is located behind the hole of the top front of blower compartment 1 Turn off all electric power to the appliance 2 Remove...

Page 21: ...sonne ne r pond appeler le service des incendies AVERTISSEMENT STARTUP ADJUSTMENTS PLEASE READ ALL SAFETY INFORMATION BEFORE LIGHTING THE FURNACE WARNING Before placing the furnace in service it must...

Page 22: ...est setting 2 Turn off all electric power to the appliance before servicing unit 3 Set the furnace On Off Switch to OFF Honeywell Figure 30 Turn gas control knob clockwise to OFF Robertshaw Figure 31...

Page 23: ...mbustion Air CAUTION Combustionairadjustmentmustbemadeonly by a qualified technician Improper air adjust ment may cause unsafe operation explosion and or fire asphyxiation If the input to the furnace...

Page 24: ...the gas valve 3 Aftera45secondpurge theignitorisenergizedfora30 second warm up period After warm up the gas valve opens NOTE The time for ignition is approximately 6 seconds after which the gas valve...

Page 25: ...ch must be set in the ON position for the furnace to operate If blower operation is not desired the furnace On Off switch may be set in the OFF position to cut the electrical power to the furnace See...

Page 26: ...RX1 scale Normal reading should be 40 75 ohms If above or below this rating at room temperature change ignitor 3 Check for continuity from ignitor receptacle to burner Control Module is Powered Ignito...

Page 27: ...attheigniterterminals andthere is no ignition the igniter is likely defective and needs to be replaced 3 If the stops flashing burner turns on but the control locks out again check the cad cell If the...

Page 28: ...L1 neutral reversed or L1 voltage not present on L1 Flame Status A Yellow LED labeled Flame is provided to indicate flame status When flame is sensed the flame LED is lit If flame sense is weak yello...

Page 29: ...roper furnace operation Excessive ice formation could restrict the combustion air supply to the burner causing inefficient burner operation If excessive ice has formed on the air inlet or exhaust port...

Page 30: ...26 43 0 3 x x 1 4 3 M1BC 066 66 53 26 43 0 3 x x 1 2 4 M1BB 086 86 68 18 37 0 3 x x 1 4 3 M1BC 086 86 68 18 37 0 3 x x 1 2 4 M5SB 066 66 56 0 3 50 Gph x Burner Model AF 10 1 4 3 M5SC 066 66 56 0 3 50...

Page 31: ...45 4 41 8 40 1 38 5 37 0 35 5 34 1 32 7 31 4 30 2 M1M 070 Orifice Size Nat Gas 24 25 26 27 27 28 28 29 29 30 Orifice Size LP 42 42 43 43 43 44 44 45 46 47 Output MBTUH 56 7 52 3 50 2 48 2 46 2 44 4 42...

Page 32: ...84 43 214 429 86 42 209 419 88 41 205 409 90 40 200 400 92 39 196 391 94 38 191 383 96 38 188 375 98 37 184 367 100 36 180 360 102 35 176 353 104 35 173 346 106 34 170 340 108 33 167 333 110 33 164 3...

Page 33: ...is required for M1MA models and M1MB 090 A C Heating Speeds Refer to Table 12 A C Blower Selection in the manual BLACK WHITE WHITE BLACK BLACK GREEN RED GRAY WHITE RED LO BLACK HIGH BLUE MED HI ORANGE...

Page 34: ...RD TERMINAL BUSHING BUSHING BUSHING BUSHING W C IGNITER FROM C WIRE GRAY BLACK BLACK FROM W WIRE BLUE GAS GUN BURNER GV PSO FSG C IND L 1 HSI HSIG L 2 W PSI FSI CONTROL MODULE IGNITER L2 MOTOR L2 L2 L...

Page 35: ...35...

Page 36: ...ATE UNIT MODEL UNIT SERIAL Minimum clearances per Table 1 page 6 YES NO Has the owner s information been reviewed with the home owner YES NO Has the literature package been left near the furnace YES N...

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