Main
WARNING:
Owners Manual/Installation Instructions
LEAVE THESE INSTRUCTIONS WITH THE HOMEOWNER.
Series M1B, M1G, M1M and M1S
Downflow, Direct Vent (Sealed Combustion) Forced Air Gas and Oil Furnaces
M 1 M B - 056 A - B W
NOTICE TO INSTALLER
1.SPECIFICATIONS
2.OWNER INFORMATION ABOUT YOUR CENTRAL FURNACE SYSTEM
3. MANUFACTURER WARRANTY, OWNERS RESPONSIBILITIES
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Figure 2. Alcove Installation
Figure 3. Closet Installation
Figure 4. Special 1 Clearance
19 3/4"
4.INSTALLATION STANDARDS
Table 3. Field Installation Blower Assemblies
Figure 1. Overall Dimensions
A- 56"
B- 76"
5.UNIT LOCATION
6.MINIMUM CLEARANCES
7.RETURN AIR PROVISIONS
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8.AIR DISTRIBUTION SYSTEMS
!
HAZARD OF ASPHYXIATION: Do not cover or restrict return air opening.
9.ROOF JACK SELECTION
10. DUCT CONNECTOR SELECTION
13 1/4" 10 1/4"
x
SUPPLY AIR DUCT
FLOOR CAVITY (depth equal to "X" in Figure 11 and Table 7)
PLATINUM SERIES
NON-PLATINUM SERIES
Figure 12. Closet or Alcove
2-1/4"
Figure 13. Cut-Out Locations
CEILING CUT-OUT FOR FLUE AND ROOF JACK (See Fig 12)
24" 23-1/4"
! IMPORTANT:
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12. INSTALLATION OF TRANSIT- MODE VENTING SYSTEM
13. ELECTRICAL WIRING
Use of copper conductors is recom- mended.
14. FUEL PIPING
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Figure 27. Typical Oil Piping for Above Ground (Single-Line) Supply
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15. FLUE GAS SAMPLING
16. LIGHTING AND SHUTDOWN
Pilot Bracket
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Do not try to light this furnace manually. The control module is not field serviceable.
! DANGER:
17. SERVICE GUIDE
Model Nat. Gas LP Gas Oil 66,000 3.5 3.5 3 86,000 5.3 6 5
A
L
T
Honeywell Valve
Main Burner Does Not Come On
Gas Valve Powered (24 volts) No Main Flame
Pilot Will Not Light or Goes Out
Robertshaw Valve
Main Flame Is Not Burning Properly
Control Module Status Indicators - M1M Series
Control Status
Flame Status
Control Module Status Indicator - M1S* Series
High Gas Bills
Burner Motor Does Not Run Thermostat Calls For Heat
120 Volts Is Available At AMP Plug Ignitor Does Not Heat Up
Main Flame Ignites Burner Locks Out
Burner Short Cycling - Thermostat Calls for Heat, Limit Switches Closed
24 Volts Supplied To Gas Valve During Ignition No Main Gas Flow
Circulation Air Blower Will Not Operate Even Though The Burner Does Operate
Honeywell R7184 oil gun control only. Burner does not start with a call for heat.
second on,
Burner starts, then locks out on safety with indicator light flashing at
second off.
18. MAINTENANCE
19. OPTIONAL ACCESSORIES
Check for Ice Here
Figure 39. Thermostat Wiring A/C Ready Models
Figure 37. Coil Cavity Damper (Non-Platinum Series Only)
Figure 38. Damper without Coil Cavity (Non-Platinum Series Only)
Table 11. A/C Blower Selection
2 Ton 3 Ton
2-1/2 Ton
20. WIRING DIAGRAMS
703887B
WHITE
Gas Atmospheric Furnaces, M1GH 056, 070
3A FUSE
BLUE
RED
703888C
Standing Pilot With Induced Draft Furnaces,
M1GH 077, 090 Models.
Figure 41. Standing Pilot with Induced Draft Furnace, M1GH 077, 090 Models
710150 08/00
Figure 42. Gas Atmospheric Furnace, A/C Ready, M1G (B, C, D) 056, 070 Models
*
Figure 43. Standing Pilot with Induced Draft Furnace, A/C Ready M1G (B, C, D) 077, 090 Models
710151 08/00
ORANGE (MED. LO)
BLUE (MED. HI)
GREEN
Figure 44. Gas Direct Ignition Furnace, Heating & A/C Ready - All M1M Models
G
Wrapped Wrapped Wrapped Board "H"
077/090
M1M(C,D)
Figure 45. Gas and Oil Furnaces, A/C Ready - M1 (B, S) 066, 086 Models
RED 3A FUSE GRAY
(SEE NOTE 3)
GREEN
F2
708672;
7086720
OFallon, MO
7086720 (Replaces 708074E)
INSTALLER: Please leave these installation instructions with the homeowner.