Nordyne M1M, M1G, M1B, M1S User Manual 2

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Downflow, Direct Vent (Sealed Combustion) Forced Air Gas and Oil Furnaces

Owners Manual/Installation Instructions

Series M1B, M1G, M1M and M1S

For installation in:

1. Manufactured Homes

2. Recreational Vehicles, Park Models, Manufactured Buildings

3. Modular Homes/Buildings

WARNING:

If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

– Do not store or use gasoline or other

flammable 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.

• 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 fire department.

– Installation and service must be per-

formed by a qualified installer, service agency or the gas supplier.

WARNING:

Should overheating occur, or the gas supply fail to shut off, shut off the manual gas valve to the appliance before shutting off the electrical supply.

Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the gas supplier.

LEAVE THESE INSTRUCTIONS WITH THE HOMEOWNER.

TABLE OF CONTENTS

1. SPECIFICATIONS ...................................................................................3

2. OWNERS INFORMATION ....................................................................... 3

3. MANUFACTURER WARRANTY, OWNER RESPONSIBILITY .................3

4. INSTALLATION STANDARDS ................................................................. 5

5. UNIT LOCATION .....................................................................................6

6. MINIMUM CLEARANCES ........................................................................ 6

7. RETURN AIR PROVISIONS .................................................................... 6

8. AIR DISTRIBUTION SYSTEMS .............................................................. 8

9. ROOF JACK SELECTION ....................................................................... 8

10. DUCT CONNECTOR SELECTION ........................................................... 9

11. INSTALLATION ..................................................................................... 11

12. INSTALLATION OF TRANSIT-MODE VENTING SYSTEM ................... 14

13. ELECTRICAL WIRING ........................................................................... 15

14. FUEL PIPING ........................................................................................ 16

15. FLUE GAS SAMPLING.......................................................................... 19

16. LIGHTING AND FURNACE SHUT DOWN .............................................. 20

17. SERVICE GUIDE ................................................................................... 25

18. MAINTENANCE ..................................................................................... 30

19. OPTIONAL ACCESSORIES .................................................................. 31

20. WIRING DIAGRAMS ......................................................................... 34-39

21. EQUIVALENT ORIFICE SIZES AT HIGH ALTITUDES .......................... 40

M 1 M B - 056 A - B W

Application

M-Manufactured Home

Furnace Series

Fuel, Type of Combustion

G-Gas, Direct Vent, Pilot Burner Natural or Forced Draft M-Gas, Direct Vent, HSI, Forced Draft B-Gas, Direct Vent, Gun Burner S-Oil, Direct Vent, Gun Burner

Comfort Model

H - Heating A - Heating, A/C Ready B - A/C Ready, 3 Ton C - A/C Ready, 4 Ton D - A/C Ready, 5 Ton

Door Color

W - White G - Gray

Cabinet Dimensions

A - 56" x 19-3/4" x 23-3/4” B - w/Coil Cavity, 76" x 19-3/4" x 23-3/4"

Electrical Code

A - 1PH, 60 Hz, 120 VAC

Heating Capacity

Input, BTUH (000’)

Table 1. Model Identification

WARNING:

Do not use this appliance if any part has been submerged under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control that has been submerged underwater.

NOTICE TO INSTALLER

Installer is advised to follow carefully all instructions and warnings in this manual to insure maximum performance, safety, and operating efficiency of these appliances. Improper installation may create hazardous conditions, and will void the appliance warranty.

1.SPECIFICATIONS

General Description

M1 Series gas and oil furnaces are listed direct vent (sealed combustion), downflow heating appliances for manufactured (mobile) homes, recreational vehicles, and for use in residential/ modular/commercial construction. The furnace must be located so that venting can be properly achieved.

Air conditioning may be added to structures with M1 series furnaces using Platinum series air conditioning or conventional units. This Installation Instruction manual includes special requirements for incorporation of air conditioning equipment to the M1 series of furnaces.

Multi-speed blower assemblies as shown in Table 3 have been certified for field installation in M1 Series furnaces. An air conditioner can be easily field installed with M1GH Series furnaces if used in conjunction with certified 2-wire relay box, p/n 903092A or 4/5 wire relay box 902898A.

2. OWNER INFORMATION ABOUT YOUR CENTRAL FURNACE SYSTEM

NORDYNE has been involved in the design of products for the manufactured home industry since the first manufactured home or trailer was built.

NORDYNE originated the sealed combustion system, which separates the furnace combustion system from the living area of the home, now a standard for the manufactured home industry.

NORDYNE engineers developed the first central heating system and the first central air conditioner for manufactured homes.

NORDYNE is dedicated to bringing to its customers the finest heating and cooling comfort possible. NORDYNE constantly seeks to further refine its products to continuously provide exceptional comfort.

Follow the instructions in this booklet carefully and this appliance will provide many years of superior performance.

If you wish to cool your home automatically with a central air conditioning system investigate the excellent NORDYNE cooling systems available from your heating and cooling contractor. These systems are designed to work best with your NORDYNE furnace and have been carefully engineered to deliver optimum performance when mated with NORDYNE manufactured home furnaces.

NORDYNE also offers water heaters, fireplaces and ventilating systems specifically designed for manufactured housing applications. Check with your manufactured home retailer, your heating and cooling contractor or your distributor for information. Write directly to the factory (PO Box 46911, St. Louis, MO 63146) if you are not able to locate a source for NORDYNE manufactured housing products in your area.

3. MANUFACTURER WARRANTY, OWNER’S RESPONSIBILITIES

It is the sole responsibility of the homeowner to make certain the gas furnace has been correctly set up and converted to the proper fuel (L.P. gas or Natural gas) and adjusted to operate properly. All gas furnaces are manufactured for Natural gas and must be field converted when using L.P. gas.

A warranty certificate with full details is included with these instructions. However, NORDYNE will not be responsible for any costs found

necessary to correct problems due to improper setup, improper installation, furnace adjustments, improper operating procedure on the part of the user, etc.

5. Correcting problems due to improper gas

supply pressure to the furnace.

6. Providing instructional training on how to

light and operate the furnace.

7. Furnace problems caused by installation of

Some specific examples of service calls which cannot be included in warranty payments are:

an air conditioner, heat pump or other air comfort devices.

8. Adding a Roof Jack extension because of

1. Converting the furnace to use another type of gas.

2. Repairing duct work in the home found to be faulty.

3. Correcting wiring problems in the electrical circuit supplying the furnace.

unusual wind and/or snow conditions.

9. Revising installation of the furnace flue assembly (Roof Jack).

10. Adjusting or calibrating of thermostat.

11. Any construction debris which falls into flue system.

4. Resetting circuit breakers, blown fuses or other switches.

Furnace Input Output Orifice No E.S.P. Pilot Ignitor Comb. Motor A/C Ready

Model No MBtu/h MBtu/h Nat. LP In WC Burner Direct Blower Hp Tons

M1GH 056 56 45 29 45 0.3 x 1/8 2* M1GB 056 56 45 29 45 0 .3 x 1/4 3 M1GC 056 56 45 29 45 0.3 x 1/2 4 M1GD 056 56 45 29 45 0.3 x 3/4 5 M1GH 070 70 57 24 42 0.3 x 1/5 2½* M1GB 070 70 57 24 42 0 .3 x 1/4 3 M1GC 070 70 57 24 42 0 .3 x 1/2 4 M1GD 070 70 57 24 42 0 .3 x 3/4 5 M1GH 077 77 62 21 40 0 .3 x x 1/4 3* M1GB 077 77 62 21 40 0.3 x x 1/4 3 M1GC 077 77 62 21 40 0 .3 x x 1/2 4 M1GD 077 77 62 21 40 0 .3 x x 3/4 5 M1GH 090 90 72 17 36 0 .3 x x 1/4 3* M1GB 090 90 72 17 36 0.3 x x 1/4 3 M1GC 090 90 72 17 36 0 .3 x x 1/2 4 M1GD 090 90 72 17 36 0 .3 x x 3/4 5 M1MA 056 56 46 29 45 0.3 x x 1/8 2 M1MB 056 56 46 29 45 0.3 x x 1/4 3 M1MC 056 56 46 29 45 0.3 x x 1/2 4 M1MD 056 56 46 29 45 0.3 x x 3/4 5 M1MA 070 70 57 24 42 0.3 x x 1/5 2½ M1MB 070 70 57 24 42 0.3 x x 1/4 3 M1MC 070 70 57 24 42 0.3 x x 1/2 4 M1MD 070 70 57 24 42 0.3 x x 3/4 5 M1MB 077 77 62 21 40 0.3 x x 1/4 3 M1MC 077 77 62 21 40 0.3 x x 1/2 4 M1MD 077 77 62 21 40 0.3 x x 3/4 5 M1MB 090 90 72 17 36 0.3 x x 1/4 3 M1MC 090 90 72 17 36 0.3 x x 1/2 4 M1MD 090 90 72 17 36 0.3 x x 3/4 5

M1BA 066 66 53 26 43 0.3 x x 1/5 2½ M1BB 066 66 53 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

M1SA 066 66 54 M1SB 066 66 54

M1SC 066 66 54

M1SB 086 86 71

M1SC 086 86 71

.50 Gph

.50 Gph .50 Gph .65 Gph .65 Gph

0.3 x 1/5 2½

0.3 x 1/4 3

0.3 x 1/2 4

0.3 x 1/4 3

0.3 x 1/2 4

Burner Model AF-10 Nozzle

Spray Angle

80° A

Electrical Supply - 120 volts, 60HZ, 1 Ph. Fuse or Breaker - 15 amps Temperature Rise - 45° to 75°F High Altitude - See Table 11. For Canadian High Altitude (2,000’ to 4,500’), reduce the gas manifold pressure to 3.0” W.C. for natural gas and to 8” W.C. for LP gas.

Table 2. M1 Furnace Specifications

Thermostat Circuit - 24 volts, 60HZ, 30 vac Normal Anticipator Setting - 0.4 Manifold Pressure - Natural Gas: 3.5” w.c. LP Gas: 10” w.c. *Blower capacity only - needs relay box for AC

Part No.

Blower / Motor Assembly

Blower Wheel Motor-Hp Ton

903773 10 x 8 1/4 2, 2½ & 3 903413 11 x 8 1/2 2, 2½, 3 & 4 903414 11 x 8 3/4 2, 2½, 3, 4 & 5

Table 3. Field Installation Blower Assemblies

Carefully review these responsibilities with your manufactured housing dealer, service company or gas supplier so there will be no misunderstanding at a later time.

6" (152 mm)

Top Clearance

A/C Capacity

CAUTION:

• Never attempt to alter or modify this furnace or any of its components.

• Never attempt to repair damaged or inoperable components. Such action could cause unsafe operation, explosion, fire and/or asphyxiation.

• If a malfunction has occurred, or if you feel that the furnace is not operating as it should, contact a qualified service agency or gas utility for assistance.

4. INSTALLATION STANDARDS

Installer shall be familiar with and comply with all codes and regulations applicable to the installation of these heating appliances and related equipment. In lieu of local codes, the installation shall be in accordance with the current provisions of one or more of the following standards.

0" Side Clearance to Furnace Cabinet

Figure 2. Alcove Installation

6" (152 mm)

Top Clearance

0" Side Clearance to Furnace Cabinet

Removable access panel should be installed above furnace door frame to access roof jack

18"

(457 mm)

Provide min. 235 sq. in. (1516 cm ) open free area in front or side wall

(152 mm)

Nearest Wall or Partition

or In closet

door located at top, center or bottom

CLOSET DOOR

“A”- 56"

“A” Modelw/o Coil Cabinet

“B” Modelw/Coil Cabinet

19 3/4"

Figure 1. Overall Dimensions

“B”- 76"

23 3/4"

Figure 3. Closet Installation

6" (152 mm)

Top Clearance

0" Side Clearance to Furnace Cabinet

(25 mm)

Figure 4. Special 1” Clearance

Provide min. 250 sq. in. (1613 cm ) open free area in front or side wall

or in closet door

a fully louvered door may be used

CLOSET DOOR

A Single trunk duct

Dual trunk duct w/crossover connector

Transition duct w/branches

a. Federal Manufactured Home Constructions

& Safety Standard (H.U.D. Title 24, Part

3280.707[a][2])

b. American National Standard (ANSI-119.2/

NFPA-501C) for all recreational vehicle installations.

c. American National Standard (ANSI-Z223.1/

NFPA-54) and/or CAN/CGA B149 for all gasfired furnace models.

d. American National Standard (ANSI-Z95.1/

NFPA-31) and/or CSA B139 for all oil-fired furnace models.

e. American National Standard (ANSI-C1/

NFPA-70) and/or CSA 22.1 Canadian Electric Code Part 1 for all electrical field wiring.

f. Units have been investigated under stan-

dards UL 307A & B, UL727-1999, ANSI

21.47a - CAN/2.3a - 1995, and CSA B140.10.

5. UNIT LOCATION

The furnace shall be appropriately located to the supply and return air distribution system. (See “AIR DISTRIBUTION”, Page 8) Sides and back of the furnace may be enclosed by wall framing. (See “Minimum Clearances,” Table 4, and Figures 2 through 5.)

The furnace installation is only intended for free air return through the furnace door louvers. DO NOT connect a ducted return air system directly to the furnace. Improper installation may create a hazard and damage equipment, as well as void all warranties.

6. MINIMUM CLEARANCES

This heating appliance must be installed with clearances not less than the minimums shown in Table 4. This heating appliance must be installed with ample clearance for easy access to the air filter, blower assembly, burner assembly, controls, and vent connections.

a. Alcove installations (see Figure 2): minimum

18" clearance at front of furnace shall be provided for future servicing. A removable access panel should be installed between top of the furnace door frame and the ceiling.

b. Closet installations must use a louvered door

having a minimum free area of 235 sq. in. when located 6" from furnace (See Figure 3) or 390 sq. in. for 5 ton ready M1 furnaces. For special clearance between 1" and 6", requirements are a louvered door with a minimum of 250 sq. in. free area, with the openings in the closet door in line with the louvered openings in the furnace door . A fully louvered closet door may be used (See Figure 4 and section 7.i. to evaluate compliance with this requirement).

7.RETURN AIR PROVISIONS

U.S.A. home manufacturers shall comply with all of the following conditions to have acceptable return air systems for closet installed forced air heating appliances:

Furnace may be installed on combustible flooring when using NORDYNE Duct Connectors (see Section 10).

When installed in a residential garage, the furnace must be positioned so the burners and the source of the ignition are located no less than 18 inches above the floor and protected from physical damage by vehicles.

ALL MODELS CLOSET ALCOVE

Front 6" 18" Back 0" 0" Sides 0" 0" Roof Jack 0" 0" Top 6" 6" Top and Sides of Duct 0" 0" Bottom of Duct

B Cabinet 0" 0" A Cabinet (w/ coil box) 0" 0" A Cabinet (w/o coil box) 1/4" 1/4"

Table 4. Minimum Clearances

CAUTION:

HAZARD OF ASPHYXIATION: Negative pressure inside the closet, with closet door closed and the furnace blower operating on high speed, shall be no more negative than minus 0.05 inch water column.

Figure 5. Non-Platinum

Supply Duct System

a. Regardless of the location, the return air

opening into the closet shall not be less than specified in the appliance’s listing.

b. Means shall be provided to prevent inadvert-

ent closure by a flat object placed over the return air opening when it is located in the floor of the closet (versus the vertical front or side wall).

c. The cross-sectional area of the return duct

system leading into the closet, when located in the floor or ceiling shall not be less than 235 square inches (or 390 square inches for 5 ton ready M1 Furnaces).

d. The total free area of openings in the floor or

ceiling registers serving the return air duct system must be at least 235 sq. in. At least one register should be located where it is not likely to be covered by carpeting, boxes and other objects.

e. Materials located in the return duct system

must have a flame spread classification of 200 or less. This includes a closet door if the furnace is in a closet.

f. Noncombustible pans having 1" upturned

flanges are located beneath openings in a floor duct system.

g. Wiring materials located in the return duct

system shall conform to Articles 300-22 of the National Electrical Code (ANSI C1/NFPA-

70).

ROOF JACK

SLANT DECK

PITCHED ROOF

CEILING CAVITY

"A"

CEILING

"B"

Furnace

FLASHING

"X" (SEE TABLE 1)

ROOF OPENING

Flue Pipe

Combustion

Air Pipe

56" or 76"

Approx. Length

Model Number Below Flashing

(F,S)AW(T)1523-(0,2,4)(A,S) 15" - 23"

(F,S)AW(T)2135-(0,2,4)(A,S) 21" - 35"

(F,S)AW(T)2747-(0,2,4)(A,S) 27" - 47"

(F,S)AW(T)3563-(0,2,4)(A,S) 35" - 63"

(F,S)AW(T)5195-(0,2,4)(A,S) 51" - 95"

F=S=FLAT FLASHING

SLANT FLASHING

AW= ALL WEATHER

SSAW

TYPE: BLANK=NON-TRANSIT T= TRANSIT MODE

MIN. ADJ. LENGTH

47 - 2

MAX. ADJ. LENGTH

All Weather Roof Jack Assemblies

MODEL APPROX . ADJ.

NUMBER LENGTHS*

FO1323 -5 13" - 23" FO2343 -5 23" - 43" SO1835 -5 18" - 35" SO2447 -5 24" - 47" SO3263 -5 32" -63"

SO4895 -5 48" - 95" SOT2442 -5 24" - 42" SOT2745 -5 27" - 45" SOT4581 -5 45" - 81" FOT2846 -5 28" - 46"

BELOW FLASHING

S O T 27 45 -5

S= SLAT FLASHING F= FLAT FLASHING

O= TYPE; STANDARD H= HIGH WIND A= ARCTIC ROOF JACK

T= TRANSIT

MODE TYPE

MAX. ADJ.LENGTH

MIN. ADJ. LENGTH

FLUE STEEL TYPE A= ALUMINIZED S=STAINLESS

FLASHING PITCH/12" RISE 0=FLAT 2=2.5/12 4=4/12

5 = 5" FLUE DIA.

Figure 6. Roof Jack Assemblies

ROOF JACK

SLANT DECK

PITCHED ROOF

FLASHING

"X" (SEE TABLE 6)

CEILING CAVITY

CEILING

ROOF OPENING

CEILING OPENING

Figure 7. Example of Flat Jack

with Flashing

OOF JACK WITH

/12 SLANT

LASHING

5/12 ROOF SLOPE

/12

SLANT DECK

Table 5. Roof Jack Assemblies

Figure 8. Example of 2½/12 Slant Jack

with Flashing

h. Gas piping is not run in or through the return

(

duct system.

i. Test the negative pressure in the closet with

the air-circulating fan operating at high speed and the closet closed. The negative pressure is to be no more negative than minus 0.05 inch water column.

j. Air conditioning systems may require more

duct register and open louver area to obtain necessary airflow. Use NORDYNE’s certiduct program to determine proper duct size for A/C.

8.AIR DISTRIBUTION SYSTEMS

For proper air distribution, the supply duct system must be designed so that the static pressure measured external to the furnace does not exceed the listed static pressure rating shown on the furnace rating plate.

b. F=Flat Flashing; flexes from 0/12 to 1/12 roof

slope.

c. S=Slant Flashing. 2.5/12 Slope flexes from 1/

12 to 4/12 roof slope, 4/12 flexes from 3/12

to 5/12. d. Stainless steel roof jacks are available. e. If the roof jack crown is covered or blocked

with snow, the furnace will not operate prop-

erly. If the home is located in regions where

snow accumulation exceeds 7” (HUD

snowload zones) use an external roof jack

extension p/n 901937. f. M1 furnaces may be used with roof jacks as

tall as 170” (except M1M 056 & M1B 066

models, which are limited to 120”). An internal

roof jack extension (p/n 901935 - 10”, p/n

903107 - 18”) can be used to increase roof

jack height. All connections inside the home

must be made below the ceiling.

Location, size, and number of registers should be selected on the basis of best air distribution and floor plan of the home.

CAUTION:

HAZARD OF ASPHYXIATION: Do not cover or restrict return air opening.

9.ROOF JACK SELECTION

Note: Install only Roof Jack Assemblies listed in Table 5 on this heating appliance.

a. Determine depth of ceiling cavity from center

of roof opening to center of ceiling opening. (See Dimension “A” in Figure 6.)

b. Determine ceiling height and subtract height

of furnace. (See Dimension “B” in Figure 6.)

c. Add dimensions A + B (and X from Table 6 and

Figure 7 if slant deck flashing is used). The total length of (A + B + X) must be within the minimum and maximum range of one of the Roof Jacks listed in Table 5.

APPLICATION NOTES:

a. FAW, FAWT, SAW and SAWT Series Roof

Jacks with a 5" diameter inner vent pipe may be used with all models of M1 Series gas and oil furnaces.

These extensions are available as optional accessories and may be purchased through your NORDYNE distributor.

IF ROOF PITCH IS: FLASHING NO. "X" FACTOR IS:

2" in 12" 903893 (2.5/ 12) 2-1/8"

2-1/2" in 12" 903893 (2.5/12) 2-1/2"

3" in 12" 903894 (3/12) 2-7/8"

3-1/2" in 12" 903894 (3/12) 3-1/4"

4" in 12" 903895 (4/12) 3-5/8"

"S" Series Roof Jack (2. 5/12 Pi tch only)

4-1/2" in 12" 903895 (2.5/12) 2-1/8"

5" in 12" 903895 (2.5/ 12) 2-1/2"

5-1/2" in 12" 903894 (3/12) 2-7/8"

6" in 12" 903894 (3/12) 3-1/4"

6-1/2" in 12" 903895 (4/12) 3-5/8"

Optional Deck Flashings for Flat and 2.5/12 Pitch

(4/12 Pitch Roof Jacks not applicable.)

USE SLANT DECK

"F Series Roof Jack

Roof Jacks.

Table 6. Slant Deck Flashings

Use Duct Connector

If "X"

Floor Cavity) is:

English Metric (mm)

7/8" 22 901987 904008

2" 51 901988 904009 4-1/4" 108 901989 904010 6-1/4" 159 901990 904011 8-1/4" 210 901991 904012

10-1/4" 260 901992 904013 12-1/4" 311 901993 904014

Model Part Number:

Finger Tab Screw Down

Table 7. Floor Cavity Sizes

10. DUCT CONNECTOR SELECTION

PLATINUM SERIES

a. For Platinum ready construction use

the 14” round duct connector, p/n:

903896.

NON-PLATINUM SERIES

a. Determine depth of floor cavity from

surface of floor to top of supply air duct (See Figure 9).

FLOOR CAVITY (depth equal to "X" in Figure 11 and Table 7)

SUPPLY AIR DUCT

b. Select appropriate model from Table 7

which matches X-dimension of the floor cavity. To maximize air delivery, remove reducer “C” (see Figure 11) to obtain the largest open area that will fit the duct/floor construction. Screw down duct connector opening to duct without reducer is 13” x 13”. With reducer it is 13” x 10-1/8”.

*FELT-SEAL

REDUCER

Figure 9.

19”

13 1/4"

10 1/4"

Figure 10.

Top View

Finger Tab

19"

Duct

Connector

*OPENING TO DUCT

WITH PLATE (C) REMOVED OPENING BECOMES 13-1/4” x 13-1/4”

SPACERS

*INDICATES FINGER TAB DUCT CONNECTOR ONLY

Figure 11.

SEE

TABLE 7

LT. FUEL INE HOLES

SIDE WALL

FUEL LINE HOLE

CEILING AND ROOF OPENINGS

REAR W

FLOOR OPENING

ALL

10"

13-1/2"

23 -1/4"

24"

21-3/4"

23-1/4"

1-1/4" D.

ALT FUEL-LINE

14-1/2"

ENTRY

Figure 12. Closet or Alcove

20"

14-1/2"

REAR WALL OF CLOSET OR ALCOVE

FLOOR CUT-OUT

FOR DUCT CONN.

CEILING

CUT-OUT FOR

FLUE AND

ROOF JACK

(See Fig 12)

FLOOR CUT-OUT

FOR OPTIONAL COOLING COIL

FOR NON-PLATINUM

SERIES UNITS

12-7/8"

14-3/4"

15-1/2"

2-1/4"

10"

2-3/4"

13-1/2"

FURNACE OUTLINE

FUEL-LINE

3/4"

1-3/4"

FURNACE

OUTER DOOR

Figure 13. Cut-Out Locations

11. INSTALLATION

REAR WALL

MOUNTING PLATE

FLOOR OPENING

FUEL LINE HOLES

SUPPLY AIR DUCT

CUT DUCT OPENING 1/16TH. LARGER THAN DUCT CONNECTOR

REAR WALL

SUPPLY AIR DUCT

FUEL LINE HOLES

OUNTING

PLATE

FLOOR OPENING

UNDER DUCT OPENING

Required floor, ceiling, and roof cut-out openings must be carefully located to avoid misalignment of the furnace and Roof Jack (see Figures 12 & 13). Installation procedures are suggested for typical furnace installations and need not be followed in the exact listed sequence.

CUT OUT FLOOR OPENING & FUEL LINE HOLE a. Determine center of closet or alcove (Figure

13).

b. Locate center of the floor opening, measured

10" from the rear wall, and mark cut-out measuring approximately 14-1/2" by 14-1/2" (± 1”) for model duct connector used (refer to Figures 10 & 11).

c. Locate center of fuel line hole, measured 23-

1/4" from the rear wall and 6-5/8" to the left of center of the floor cut-out (See Figure 12) or

5-1/4" to the left of center of the floor cut-out, or for entry through right-side of furnace measured 9" to the right of center of the floor cut-out.

d. Cut out floor opening and one fuel line hole.

IMPORTANT:

Refer to the installation instructions provided with optional air conditioning packages when installing furnaces with optional cooling coil cabinet or with optional C***-series indoor coils.

CUT OUT CEILING AND ROOF OPENINGS a. Locate center of Roof Jack opening, mea-

sured 13 1/2" from the rear wall of closet or alcove along the center line of furnace and floor opening. (See Figure 13)

Non-Platinum Series

Figure 14. Mounting Plate

MOUNTING PLATE

DUCT CONNECTOR

Platinum Series

Figure 15. Duct Connector

SCREWS

FUEL

LINE

HOLES

14” SUPPLY CONNECTION

b. Cut ceiling and roof holes as follows:

Ceiling Hole = 8-3/4" (222 mm) diameter Roof Hole = 9-3/8" (238 mm) diameter

c. DO NOT ALLOW DEBRIS TO FALL INTO

THE FURNACE. THIS COULD CAUSE UNSAFE OPERATION AND VOIDS THE FURNACE WARRANTY. Use the top cap that comes with the furnace packaging (or alternate protector) to prevent debris from falling into the furnace before the final roof jack connection is made.

CUT DUCT OPENING (FINGER TABBED ONLY) a. Place duct connector through the floor open-

ing with bottom tabs resting on top of the supply air duct.

b. Center duct connector and push back against

rear edge of floor opening.

c. Mark cut-out location (tab area) and remove

duct connector.

d. Cut out duct opening 1/4" larger than area

marked.

INSTALLING FINGER TABBED DUCT CONNECTORS a. Place duct connector through the floor open-

ing with bottom tabs extending through the

duct opening. (See Figure 15) b. Secure duct connector to floor. c. Bend bottom tabs under and up tightly against

the supply air duct (See Figure 16).

NOTE: The duct connector is designed for use on ducts 12" in width. When using the connector on 12" wide ducts, there may be insufficient clearance to bend the tabs on two sides of the duct connector. In such cases the tabs may be attached to the sides of the duct by using sheet metal screws or other suitable fasteners. (See Figure 17).

If sealant, mastic, or tape is used to provide a better seal, it should be approved by applicable national or local codes.

ALTERNATE ATTACHMENT METHODS

INSTALL FURNACE MOUNTING PLATE a. Place mounting plate (supplied within duct

connector) at rear of the floor opening (See Figure 15).

INSTALLING PLATINUM SERIES 14” ROUND DUCT CONNECTOR a. Place duct connector through the floor open-

ing. (See Figure 15).

b. Secure duct connector to floor.

INSTALLING SCREW DOWN DUCT CONNECTOR a. Apply a bead of caulking, mastic, or other

approved sealant around bottom side of 1/2” flange and restrictor plate, when applicable.

b. Locate the duct connector over duct and

carefully lower screw down duct connector into place.

c. Once duct connector is located on duct,

temporarily hold in place while fastening duct connector to the floor using flat head screws or nails. Be sure flanges of duct connector stay in contact with the duct.

d. Screw plenum to duct making sure a seal is

made between the duct and the duct connector. Additional screws may be added if required.

e. Cut away duct along edge of flange allowing

the center to drop into the duct. Remove section of duct with caution, as edges will be sharp.

This procedure may also be used to install a furnace duct connector to narrow metal ductwork where insufficient clearance prevents

TABS

DUCT

1. INSERT DUCT CONNECTOR INTO DUCT CUT-OUT.

TABS

DUCT

2. BEND BOTTOM TABS OVER AND ONTO THE UNDERNEATH DUCT SERVICE.

Figure 16. Installation of Duct Connector

Duct Connector

Narrow Duct

Duct

Figure 17.

bending of the duct connector tabs at the side(s) of the duct. (See Figure 18).

1. Score and cut the top of the metal duct as indicated in Step 1 or Step 2. With Step 1 choice, also cut out the metal from the shaded area “A”.

2. Fold the duct flap “B” up, (See Step 3).

3. At the front-to-back of duct run (Area “A”), bend the duct tabs and secure them directly to the duct.

4. At Area “B”, bend the duct tabs up and back over, around the duct connector, (See Step 3).

5. Fold/form the duct flap against the side of the duct connector and attach as shown, (See Step 4). Use three (3) staples (minimum) on each duct flap OR, if a 2X block/joist is not provided, use two (2) sheet metal screws (minimum) on each duct flap. An alternate attachment method is acceptable, as long as the duct connector is securely attached.

6. Tape the duct flap edges with an approved tape for a leak-free joint.

INSTALL FURNACE a. Remove furnace outer door(s) and bottom

fuel line knockout.

b. Place furnace onto duct connector and cen-

ter with floor opening.

c. Slide onto mounting plate. (Bottom rear slots

on furnace should engage with mounting plate tabs.)

d. Secure front with one (1) fastener at each

corner (See Figure 19 or 20).

NOTE: Additional fasteners may be used at rear, sides or through door frame, as desired, to secure furnace to closet or alcove framing.

INSTALL ROOF JACK

Apply caulking compound on underside of roof flashing to form a continuous strip at least 3/8" wide (see Figure 21) around the underside of the perimeter of the flashing. Connect Roof Jack Assembly to the furnace. Insert telescoping Roof Jack Assembly through the opening cut on the roof. Connect flue pipe to flue collar of furnace. Connect combustion air pipe to furnace collar with sheet metal screw (See Figure 22). It is recommended that the connection of the combustion air pipe to the furnace be made before the flashing is secured to the roof to maintain alignment of roof jack and furnace connections.

NOTE: For replacement furnaces, be sure the inner flue pipe connects over the furnace vent collar. DO NOT use a smaller diameter inner

flue pipe which could slide inside the furnace vent collar and restrict the flow of furnace flue products.

Attach Roof Flashing: If necessary, shift roof flashing slightly in the roof opening so that assembly is in good alignment with furnace. Press down firmly over caulking on roof flashing to make the seal with roof water tight. Secure flashing with appropriate fasteners. As an

STEP 1.

Fold Back Flap "B"

Cut- Out

Area "A"

Bend Duct Connector Tabs Up

and Over- (along length of duct)

STEP 3.

"A" "A"

Duct

"B"

Fold Back Flap "B"

Duct Flap "B"

Cut- Out Area"A"

Top of Duct

Figure 18.

STEP 2.

Fold Back Flap"B"

Cut

Lines Duct

Staple Folded Duct

Flap (typ) to side of Duct

Connector

STEP 4.

"B"

Fold Back Flap"B"

Duct

MTG. PLATE TABS

;

SECURE FURNACE

WITH 2 FASTENERS AT FRONT

CORNER HOLES

SLIDE FURNACE

ALL THE WAY BACK

ONTO MTG. PLATE

added protection against leaks, coat the flashing plate and fasteners with approved roofing compound.

If flashing mounted on 12 degree angle is used it may be necessary to adjust the angle to match the roof pitch; (1/12 - 4/12 maximum).

Knockout O

ver H

PLY A

oles

Figure 19. “A”, “B”, & Platinum

Cabinet Furnaces

SLIDE FURNACE

ALL THE WAY BACK

ONTO MTG. PLATE

FUEL LINE HOLES

MTG. PLATE TABS

SECURE FURNACE

WITH 2 FASTENERS

AT FRONT CORNER HOLES

SUPPLY AIR DUCT

Figure 20. “A” Cabinet Furnace on 911969

Coil Cabinet (Non-Platinum Series)

Secure Roof Jack with appropriate fasteners after connecting to furnace

Roof

Caulk under roof flashing to prevent water leakage

;;;;;;;;;;;;;;;;;;;;;;;;;;;

Optional #901943 Ceiling Trim Ring or #902521 2-piece Ceiling Ring

;;;;;;;;;;;;;;;;;;;;;;;;;;;

Ceiling

12. INSTALLATION OF TRANSITMODE VENTING SYSTEM

MANUFACTURED HOME FACTORY a. Furnace to be installed per furnace installa-

tion manual.

b. Roof Jack to be selected from Table 5 of

these instructions.

c. Roof Jack (less upper Roof Jack crown),

with weather cap to be installed as described under Install Roof Jack.

d. Upper Roof Jack crown to be stored in a

prominent location inside manufactured home until on-site installation.

e. The four warning tags supplied must be

installed as follows:

• To weather cap

• To fuel line connection point (Gas) or furnace burner (Oil)

• To furnace flame observation door (Gas or Oil)

• To furnace wall thermostat

MANUFACTURED HOME SITE a. Transit-mode weather cap to be removed

and upper Roof Jack crown installed (See Figure 24).

b. Place upper Roof Jack (crown) on to the flue

pipe assembly. Be sure inside flue pipe attaches over inner flue pipe. Be sure outer Roof Jack pipe fits over outer pipe. Secure in place using three (3), #10, 1/2" sheet metal screws removed in step #a. Do not use the same holes which secured the rain cap in place.

Figure 21. Flat Roof

Secure lower roof jack section with no. 10 S.M. screws

Roof

Caulk under roof flashing to prevent water leakage

Upper Roof Jack Section

Optional Slant-Deck Flashing

Secure flashing with appropriate fasteners

Ceiling

Figure 23. Pitched RoofFigure 22.

c. Venting system warning tags to be removed

and discarded.

WARNING:

Failure to properly secure the flue pipe to the furnace may result in fire, explosion or asphyxiation when operating the furnace.

13. ELECTRICAL WIRING

Refer to the wiring diagram in these instructions or affixed to the inside of the control box cover for the wiring of your particular unit.

ELECTRICAL BRANCH SUPPLY CIRCUITS. Route all electrical wiring to the left side of the furnace. For installation of “A” Cabinet furnaces, allow sufficient slack in the wiring if an optional cooling coil cabinet is added at a later time.

mended.

Use of copper conductors is recom-

WARNING:

Any attempt to operate furnace before replacing transit-mode weather cap with upper roof jack section may result in hazard of fire, explosion or asphyxiation.

Power supply circuit to the furnace must be installed and grounded in accordance with the National Electrical code (ANSI-C1/NFPA-70), or Canadian Electric Code Part 1 (CSA 22-1) and all local codes having jurisdiction.

CONNECT POWER SUPPLY WIRES a. Remove the furnace control panel cover. b. Insert 115 volt wires through the strain relief

on the left side of the furnace control box (see Figure 25).

c. Connect the “hot” wire to the BLACK pigtail

lead, and the “neutral” wire to the WHITE pigtail lead. Secure all connections with suitable wire nuts.

d. Connect the “ground” wire to the grounding

screw.

e. Reinstall the control panel cover and secure

with the original mounting screws.

CONNECT THERMOSTAT WIRES a. Insert 24 volt wires through the plastic grom-

met just above the control panel.

b. Connect the thermostat wires to the furnace

low voltage pigtails (see Figure 25).

c. Connect low-voltage circuit to the wall ther-

mostat.

d. A hole may be made in the furnace cabinet to

ease thermostat wiring. Make sure that the wiring is protected from the sharp edge of the added hole.

NOTE: The thermostat should be installed 4 to 5 feet above the floor on an inside wall which is relatively free from direct sources of heat or

FLUE ASSEMBLY

UPPER ROOF

JACK (CROWN)

WEATHER CAP

FLASHING

OUTER PIPE

INNER FLUE PIPE

SCREWS

COMPLETED ASSEMBLY

TO FURNACE

Figure 24.

cold drafts. The nominal anticipator setting is

0.4. (Refer to the thermostat literature for additional information.)

If the heat anticipator is set too low, the furnace may cycle frequently and not provide comfort to the homeowner.

Five-conductor thermostat wire is recommended for 24 volt low-voltage circuit (2-wire is required for furnace only; 5-wire for heating and optional cooling systems).

For Platinum-ready Construction:

a. Use a heat/cool thermostat. b. Run thermostat wire from the Thermostat to

the Furnace (see Figure 39).

c. Using thermostat wire with at least two wires

(four wire is recommended), run thermostat wire from the Furnace to the intended location of the Platinum-series unit. Leave at least six feet of extra thermostat wire at the intended location for future hook-up. Coil remaining six feet of wire and attach to the home’s undercarriage.

Once the furnace is installed check the thermostat anticipator against the nominal setting of

0.4:

1. Connect the milliamp meter in series with one of the gas valve’s low voltage terminals.

2. Energize the gas valve.

3. Read the value of the milliamps.

4. Adjust the heat anticipator of the thermostat to the value read on the milliamp meter.

If the heat anticipator is set too high, the furnace may delay in coming on.

14. FUEL PIPING

Sizing and installation of fuel lines must be in accordance with federal, state and local regulations. All piping shall be black iron pipe, or equivalently sized steel tubing. Internally tinned copper tubing may be used for gas supply systems.

Fuel line installations other than typical installations shown in Figures 26 and 27 must comply with the fuel piping provisions stated in the Federal Manufactured Home Standard (H.U.D. TITLE 24, PART 280) and the National Fuel Gas Code (ANSI-Z223.1/NFPA-54).

a. Optional fuel inlet lines are available for all gas

furnace models to permit the addition of a 1/ 2" F.P.T. shut-off valve above the floor.

NOTE: Shut-off valve must be designed and listed for use with liquid petroleum (L.P. gas).

The gas supply to your home will either be Natural Gas or L.P. (bottle gas). Your furnace is factory equipped to operate on Natural Gas. If your gas supply is L.P. (bottle gas), you must contact a qualified serviceman or gas supplier to convert the furnace. The necessary instructions for the gas conversion are found on the lighting instruction label attached to the furnace in Section 16, Service Guide.

On-Off Switch

Blower Plug

Power Entry

On-Auto Switch (Heating Models Only)

Thermostat Wires

Furnace Control Box

To Combustion Blower or Flame Roll-Out Switch

To Gas Valve or Burner

Figure 25. Control Panel (All Models)

For natural gas operation, the furnace is de-

)

signed for 7" W.C. inlet 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 13” W.C.

For L.P. gas, pressure to the gas valve must be more than 11" W.C. but not more than 13" W.C. Pressure is reduced to 10" W.C. by the pressure regulator in the gas valve.

CAUTION:

The furnace must be converted by a qualified technician. Improper conversion can cause unsafe operation, explosion, fire and/or asphyxiation.

T’STAT

Wire Gauge

24 55 25 22 90 45 20 140 70 18 225 110

Recommended T’STAT Wire

th (Unit to T’STAT

Len

2-Wire 5-Wire

(Heating) (Heating/Cooling)

Table 8. Thermostat Wire Gauge

Use a tank capacity suitable for the application with a weatherproof, capped fill opening and a shielded vent to let in air as fuel is used. The tank must be clean inside before filling. All water, rust, sediment and other foreign matter must be flushed out.

Oil Tank and Piping Installation

The following procedures are recommended as good practice. However, requirements of local codes and ordinances, H.U.D. Manufactured Home and Safety Standards or National Fire Protection Association must be satisfied, where they apply, for an approved installation.

On-Off-Fan Switch

Control Panel

A fuel or tank gauge is recommended for easy checking of the fuel level. Check the gauge reading with a dipstick.

Locate the storage tank conveniently near the home. For above ground fuel tank installations, the tank may rest three to four inches off the

Floor

Floor Cavity

To Gas Supply

Alt. Fuel Line Entry

Figure 26. Typical Gas Piping

Air-Bleed

Switch

Valve

Return Port &

Internal By-Pass

Optional

Inlet

If fuel pump fails to lift oil, check for air

leaks and tighten all fuel fittings. Re-

Oil-Gun

Burner

port plug and repeat priming procedure.

prime fuel pump by injecting fuel oil into

optional (top) return port. Replace return

Floor

Inlet

Port

Optional

Return

Pressure

Gauge Port

Nozzle

Port

Flue Gas

Sampling

Hole

On-Off-Fan

Floor Cavity

Oil

Furnace

Top of Tank

2" Fill

2" Duplex

Bushing

3/8" Oil Supply Line

Vent with

Cap

Gauge

Control

Panel

8 ft.

Shut-off

Valve

Guide pipe

Alternate

Fuel Line

Entry

Optional

Fuel

Filter

Drain

End of Oil Supply Line

3" to 5" Above

Bottom Drain

Note: Additional venting

may be required if tank

is filled rapidly.

Figure 27. Typical Oil Piping for Above Ground (Single-Line) Supply

ground. Fuel tanks may also be buried if properly coated to resist corrosion. For below ground fuel tank installations, the vertical dimension from the bottom of the fuel tank to the fuel pump must not exceed ten feet. Keep the tank filled, especially in the summer to reduce the accumulation of condensation.

Fuel Line Hook-Up: One Line System

The one line system is highly recommended where vertical lift, from bottom of tank to pump, is not more than eight feet. A single line hookup has the advantage of costing less and giving quieter operation.

Fuel Line Hook-Up: Two Line System

Use a two line system only if the vertical lift exceeds 8 feet.

1. Install the oil feed line as outlined in steps 16 below.

2. Install the oil pump bypass plug in the bottom return port.

3. Run the return line up through the furnace base to the return port of the pump. Run the other end of the line to the tank, using 3/8” O.D. copper tubing or 1/4” pipe with the ends capped, and routing the line so it stays clean.

4. Insert the return line through the second opening in the duplex bushing. If the bottom of the tank is lower than the pump intake, the tube should be inserted three or four inches from the tank bottom. If the bottom of the tank is higher than the pump intake, the return line should extend not more than 8” inside the tank.

If a two pipe system is used or if oil is taken from the bottom of the tank, a filter is recommended.

Hook-Up Procedure (See Figure 27)

1. Use a 3/8” O.D. copper tubing for the fuel line. Cap the end with tape to keep out dirt while the line is being routed.

2. Install duplex bushing for two 3/8” lines in the top fitting of the tank.

3. Insert one end of the tubing through the duplex bushing until it is three to five inches from the bottom drain. Tighten the bushing.

4. Run the line where it will not be subject to damage. Also, make bends gradually and avoid kinks which might restrict oil flow.

5. Open the furnace door. Connect the oil line to the intake port on the pump. Tighten other port plugs on the pump.

6. Be sure oil line is airtight! Air leaks can cause the pump to lose prime and will create other

problems such as nozzle failure, odors, rumbling noise, and false safety shutdown.

7. Insert the short length of the copper tube level with the bottom of the duplex bushing. Form the tube into an inverted “U” to serve as a vent.

How to Eliminate Air Leaks

To eliminate problems caused by air in the oil line, all connections in the oil supply line and all plugs, nuts, and fittings on the pump must be airtight. This includes the nut that covers the pressure adjustment. It is important that the hook-up be done carefully and with a good flaring tool.

To assure continuous operation, use a wire to jump terminals T-T (or F-F) on the primary control while burner is running. If furnace is equipped with the Honeywell R7184 primary control, priming oil pump procedure is as follows:

1. While the ignition is on, press, for 1/2 second or less, and release the reset button. The lockout time will be extended to 4 minutes.

2. If prime is not established within the 4 minutes, the control will lock out. Press the reset button to reset the control.

3. Repeat steps “1” and “2”, if needed, until the pump is fully primed.

When oil flow is clear and free of air bubbles, close air-bleed valve and tighten. (Time to bleed air out will vary depending on length of oil line, number of bends, etc.)

Fuel Oil Type

Do not use fuel oil heavier than Grade No. 2. Grade No. 1 may be used where the oil supply is subject to low temperatures.

DO NOT USE GASOLINE, CRANKCASE OIL, OR ANY OIL CONTAINING GASOLINE.

WARNING:

Failure to keep supply of oil clean by various procedures described above may cause failure of certain components such as the fuel pump gears, check valve, shaft seal, or burner nozzle which may result in a burner fire.

15. FLUE GAS SAMPLING

It may be necessary to take flue gas sampling from oil and gas gun furnaces (M1S and M1B Series Models) in order to check the performance after furnace 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. STOP! Read the SAFETY INFORMATION.

2. Turn off all electric power to the appliance.

3. Remove the black plastic cap located above the blower and save.

4. Through the top of the blower compartment hole, drill a hole for your sampling tube into the heat exchanger.

5. Insert sampling tube through the drilled hole.

6. After a complete check and adjustment of furnace performance, fill the drilled hole with a screw that is larger than the hole.

7. Put silicon sealant (rated at least 500° F) around the screw.

8. Plug the outside hole with the plastic cap you removed in step 3.

WARNING:

If you do not follow these instructions exactly, a fire or explosion may result causing personal injury, loss of life, or property damage.

16. LIGHTING AND SHUTDOWN

GENERAL-ALL MODELS

Read the safety information on the front page of these installation instructions before lighting furnace. DO NOT ATTEMPT TO LIGHT

FURNACE IF YOU SMELL GAS.

SAFETY INFORMATION

FOR YOUR SAFETY READ BEFORE LIGHTING.

a. The first lighting of the furnace after any

home setup must be performed by a qualified service technician.

b. If this appliance has a pilot that must be lit by

hand, follow these instructions exactly.

c. BEFORE LIGHTING smell all around the

furnace for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

d. WHAT TO DO IF YOU SMELL GAS: Do not

try to light any appliance. Do not touch any electric switch and do not use any phone in your building. 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 fire department.

e. Use only your hand to push in the gas control

lever. Never use tools. If the lever will not push in by hand, don’t try to repair it. Call a qualified service technician. Force or attempted repair may result in a fire or explosion.

f. Do not use this furnace if any part has been

under water. Immediately call a qualified service technician to inspect the furnace and to replace any part of the gas valve or control system which has been under water.

LIGHTING INSTRUCTIONS FOR STANDING PILOT MODELS.

a. Stop! Read the safety information. b. Set the thermostat to the lowest setting. c. Turn off all electric power to the appliance. d. Push in the gas control lever slightly and

move left to “OFF.” DO NOT FORCE.

e. Wait ten (10) minutes to clear out any gas.

If you then smell gas, STOP! Follow step “d” in the SAFETY INFORMATION. If you don’t smell gas, go to the next step.

f. Find pilot - follow metal tube (pilot tube) from

gas control valve. Open hinged fire observation door. The pilot is found at the end of the pilot tube just left of the pilot shield.

g. Slightly depress the gas control lever and

move it right to the “ON” position and release; then move it to the “PILOT” position.

h. Move the control lever to “SET” and hold.

Immediately light the pilot with a match. Continue to hold the control lever for about one (1) minute after the pilot is lit. Release the lever and it will spring back to the “PILOT” position. Pilot should remain lit. If it goes out, repeat steps “d” through “h” above. If the lever does not spring back when released, stop and immediately call your service technician or gas supplier. If the pilot will not stay lit after several tries, move the gas control lever to “OFF” and call your service techni-

cian or gas supplier. i. Move the gas control lever left to “ON”. j. Turn on all electric power to the furnace. Set

the thermostat to “Heat” and/or the desired

temperature setting. Set the On-Off-Fan

switch to “ON”. k. Replace the furnace door.

WARNING:

Close hinged fire door. If fire door is open or spring is broken it may allow products of combustion into the living space by the furnace blower resulting in possible asphyxiation.

SEQUENCE OF OPERATION FOR STANDING PILOT

a On a call for heat, the thermostat contacts

close, supplying 24 VAC to the gas valve. b. When the gas valve is energized it steps

open at a reduced flow and opens fully after

approximately 14 seconds. c. When the call for heat is satisfied the thermo-

stat contacts open, the gas valve shuts off

gas flow.

In the event of any flashback or explosion, immediately shut off the furnace and call your service technician.

TO TURN OFF GAS TO APPLIANCE:

a. Set the thermostat to the lowest setting. b. Turn off all electric power to the appliance at

breaker or fuse box, before servicing. c. Remove the furnace door. d. Push in the gas control lever slightly and

move to the left to “OFF.” DO NOT FORCE. e. Replace the furnace door.

SEQUENCE OF OPERATION FOR STANDING PILOT W/INDUCED DRAFT BLOWERS MODELS

a. On a call for heat, the thermostat contacts

close, supplying 24 VAC to the relay.

b. The relay contacts close and energize the

induced draft motor.

c. When the inducer starts, the air pressure

switch closes at -0.20”WC differential pressure and energizes the gas valve.

d. When the gas valve is energized it steps

open at a reduced flow and opens fully after approximately 14 seconds.

Pilot Bracket

Gas Control Lever

Pilot Adjustment

Figure 28. Standing Pilot Valve

Figure 29. Lighting Furnace

e. When the call for heat is satisfied the thermo-

stat contacts open, the gas valve shuts off gas flow, and the induced draft blower stops.

GENERAL-DIRECT IGNITION MODELS

Read safety information on front page of these installation instructions before operating furnace. DO NOT ATTEMPT TO OPERATE

FURNACE IF YOU SMELL GAS.

Operating instructions for M1M — MODELS WITH DIRECT IGNITION:

a. STOP! Read the SAFETY INFORMATION. b. Set the thermostat to the lowest setting. c. Turn off all electric power to the appliance. d. This appliance is equipped with an ignition

device which automatically lights the burner. Do not try to light the burner by hand.

e. Honeywell - push in the gas control knob and

turn clockwise to “OFF.” Robertshaw - push the gas control lever to “OFF.” NOTE: The lever cannot be placed in the “OFF” position unless it is pushed in slightly. DO NOT FORCE (See Figures 30 & 31).

f. Wait ten (10) minutes to clear out any gas. If

you smell gas, STOP! and follow step “d” in the SAFETY INFORMATION section. If you

do not smell gas, go to the next step. g. Set the On-Off switch to the “ON” position. h. Honeywell - turn knob on gas control counter

clockwise to “ON.” Robertshaw - push the

gas control lever to “ON.” i. Turn on all electric power to the appliance. j. Replace the furnace door. k. Set the thermostat to “HEAT” and the desired

temperature setting. The furnace should light

after approximately 75 seconds. If the appli-

ance will not operate, follow the instructions

“To Turn Off Gas To Appliance” and call your

service technician or gas supplier.

In the event of any flashback or explosion, immediately shut off the furnace and call your service technician.

TO TURN OFF GAS APPLIANCE: a. Set the thermostat to the lowest setting. b. Turn off all electric power to the appliance

before servicing unit. c. Set the ON-OFF switch to “OFF.” d. Honeywell - push in the gas control knob and

turn clockwise to “OFF.” Robertshaw - push

the gas control lever to “OFF.” e. Replace the furnace door.

GAS CONTROL KNOB

Figure 30. Direct Ignition

Gas Valve - Honeywell

Gas Control

Figure 31. Direct Ignition

Gas Valve - Robertshaw

SEQUENCE OF OPERATION FOR M1M MODELS WITH DIRECT IGNITION

Direct ignition model furnaces do not have a pilot. Ignition is accomplished automatically by a silicon carbide hot surface ignitor. A control module takes care of all timing functions. After lighting, the control module uses the ignitor as a flame sensor, shutting off gas should the flame go out. There are no external relays or timing devices.

Do not try to light this furnace manually. The control module is not field serviceable.

a. On a call for heat, the thermostat contacts

close, supplying 24 VAC between terminals

“C” and “W” of the control module, which

starts combustion motor. b. When the inducer starts, the air pressure

switch closes at -0.20”WC differential pres-

sure and energizes the control. c. After a 45 second purge period, the ignitor is

energized for a 30 second warm-up period,

after which the gas valve opens. d. The trial period for ignition is approximately 6

seconds, after which the gas valve either

remains open if flame is sensed, or closes if flame is not sensed.

e. If flame is not sensed, the entire sequence is

repeated four more times before “lockout” occurs. To reset, wait 30 seconds and then interrupt the 24 VAC power by turning the room thermostat below room temperature, then returning it to the original set point.

f. If flame is not established on the fifth trial for

ignition (initial try + 4 re-tries), the control deenergizes the gas valve, flashes “4” on the Status LED, and lockouts out heat operation for 1 hour.

g. If a flame is present, the control energizes the

main blower on heat speed 30 seconds after the gas valve opens.

h. When call for heat is satisfied the thermostat

contacts open, the gas valve shuts off gas flow and the combustion blower remains on for a 30 second post-purge period.

i. The main blower is de-energized after a 120

second blower off delay.

WARNING:

FOR YOUR SAFETY; 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.

• 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 fire department. Should overheating occur or the gas supply fail to shut off, disconnect the power at the main circuit breaker and then see “To Turn Off Gas To Appliance.”

OPERATING INSTRUCTIONS FOR OIL AND GAS GUN FURNACE:

Do not try to light this furnace manually

a. Open all valves in the oil line. b. Be sure the fire door is closed. c. Set the On-Off switch to “ON”. d. Set the thermostat to the desired setting.

SEQUENCE OF OPERATION FOR OIL GUN MODELS

Oil Furnace - Honeywell R7184 Control

1. When a call for heat is initiated, there is a 26 second delay while the control performs a safe start check.

2. The ignition and motor are turned on and a flame should be established within the 15second lockout time. NOTE: Burner will prepurge for 15 seconds if equipped with R7184B Control.

3. If flame is not sensed within the 15-second lockout time, the control shuts down on safety lockout and must be manually reset. If control locks over three times in a row, the control enters restricted lockout. To reset, hold down the reset button for 30 seconds until the LED flashes twice.

4. Once flame is established, the ignition remains on 10 seconds to ensure flame stability. It then turns off.

5. The circulating air blower will energize after the temperature fan switch closes.

6. The furnace runs until the call for heat is satisfied.

7. The circulating air blower will de-energize when the temperature fan switch opens.

WARNING:

If furnace still does not light, turn the furnace off (described above) and call your technician. In the event of any flashback or explosion, immediately shut off furnace and call your service technician.

Oil Gun Model

M1 oil gun furnaces may be converted to gas gun in the field by using the proper conversion kit listed in the RPL.

If your furnace model number begins with M1S*, the furnace is equipped with an ignition device which automatically lights the burner.

Gas Gun Models

M1 gas gun furnaces may be converted to oil gun in the field by using the proper conversion kit listed in the RPL.

If your furnace model number begins with M1B*, the furnace does not have a pilot. Ignition is

accomplished automatically by a silicon carbide hot surface ignitor. A control module takes care of all lighting and timing functions. There are no external relays or timing devices.

Do not try to light this furnace manually. The control module is not field serviceable.

1. Before operation, smell all around the furnace for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. If you smell gas, STOP! and follow the safety instructions below. If you don’t smell gas, go to the next step.

2. Set the thermostat to the lowest setting.

3. Turn off all electric power to the appliance.

4. This appliance is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand.

5. Honeywell - push in the gas control knob and turn clockwise to “OFF.” Robertshaw

- push the gas control lever to “OFF.” NOTE: The lever cannot be placed in the “OFF” position unless it is pushed in slightly. DO NOT FORCE (See Figures 30 & 31).

6. Wait ten minutes to clear out any gas. If you then smell gas, STOP! and follow the safety information on the preceding page. If you don’t smell gas, go to the next step.

7. Set the On-Off switch to the “ON” position.

8. Honeywell - turn knob on gas control counter clockwise to “ON.” Robertshaw - push the gas control lever to “ON.”

9. Turn on the electric power to the appliance.

10. Set the thermostat to “Heat” and/or the desired temperature setting. The furnace should light in approximately 45 seconds. If the appliance will not operate, follow the instructions “To Turn Off Gas To Appliance” and call your service technician or gas supplier.

In the event of any flashback or explosion, immediately shut off the furnace and call your service technician.

SEQUENCE OF OPERATION FOR GAS GUN MODELS

a. On a call for heat, the furnace control begins

an ignition sequence which lasts approximately 45 seconds.

b. After this sequence, the control module tests

to see if flame is sensed. If it has, the furnace continues to heat until the thermostat is satisfied.

c. If the burner has not lit, the ignition sequence

is repeated a maximum of two more times. If flame is not sensed after three attempts, the control enters “Lockout” and no further attempts to light the burner will occur. If “Lockout” occurs, contact a qualified service technician for assistance.

DANGER:

Before placing the furnace in service it must be checked to make sure it is equipped for the type of gas being used. The burner flame must also be observed and adjusted if necessary. Failure to observe this caution may result in unsafe operation, explosion and/or fire, or asphyxiation. See the following sections “Gas Supply” and “Combustion Air.”

d. When call for heat is satisfied, the thermostat

contacts open and the gas valve shuts off gas flow.

TO TURN OFF GAS/OIL APPLIANCE: a. Set the thermostat to the lowest setting. b. Turn off all electric power to the appliance

before servicing unit. c. Set the On-Off Switch to “OFF.” d. Honeywell - turn gas control knob clockwise

to “OFF” Robertshaw - Push the gas control

lever to “OFF.” e. For oil, shut off all valves. f. Replace the furnace door.

THE FURNACE CONTROLS AND FUNCTIONS

1. On-Off Switch - This switch turns electrical

power to the furnace on and off. The switch

must be set in the “On” position for the

furnace to operate. For M1G* models, in

warm weather there is a possibility of the

blower coming on periodically or operating

continuously due to a heat buildup within the

furnace by a combination of warm weather

and heat from the pilot. This is normal

operation as long as there is power to the

furnace and the On-Off switch is at the “ON”

position. If blower operation is not desired,

the On-Off switch may be set in the “OFF”

position to cut the electrical power to the

furnace.

2. Limit Control - This furnace is protected by two high temperature safety limit switches. The auxiliary (upper) limit switch and the high temperature (lower) limit switch are automatic reset types. If either limit trips, the burner will shut off. If either limit switch trips off again soon after resetting, set the furnace On-Off switch to the “OFF” position and call your authorized serviceman.

3. Gas Valve - The gas valves for the gas furnaces are a 100% shut-off type and will fail safe if for some reason the gas is turned off. The valve is a “step-open” type for M1G*models and “slow-open” for M1M*- and M1B*models which means it opens to a “low-fire” position, and after a few seconds, “stepsopen” to “high-fire.”

4. Roll Out Switch - (M1G* - 056 & 070) The furnace is protected by a manual reset safety switch located on the bottom left hand side of the combustion pipe.

5. Oil Burner Primary Control - The primary control for oil gun furnaces starts the burner, monitors a safe operating cycle, and shuts the burner off at the end of a heating cycle. The control uses a light sensing transducer to determine if fuel ignition has been successfully attained. If ignition is not attained by the end of the safety ignition timing period, the control shuts the burner off and enters “lockout.”

6. a. Summer Cooling - (H Series): Your furnace is equipped to operate the circulating fan only. Turn the Fan On-Auto switch to the “ON” position during warm weather. The blower will now operate to circulate air in your home through the duct system.

b. Summer Cooling - (A, B, C, & D Series): Your furnace is A/C ready, equipped with A/ C relay and transformer. The unit is equipped to use a 4-wire thermostat. When using a 5wire thermostat, RC and RH should be jumped (see instructions included with thermostat).

tion. Therefore the following items should be checked and readjusted if necessary.

Atmospheric Gas with Standing Pilot and Direct Ignition Furnaces, Including Gas Gun. a. Gas Pressure

The gas pressure can be checked with a manometer at the pressure tap located on the side of the gas valve. The gas valve pressure regulator can be adjusted by removing the regulator selector stack and turning the slotted insert located directly under the selector stack. The regulator selector stack must be secured in place before each pressure reading is taken. Natural gas manifold pressure should be 3.5" W.C. and L.P. gas manifold pressure should be 10" W.C. Replace the gas pressure tap plug on the gas valve.

b. Pilot Flame (Standing Pilot Only)

The pilot flame can be adjusted by turning the pilot adjustment screw, located on top of the gas valve (See Figure 29). The pilot flame height should be between 3/4” and 1.” The flame tip should be visible just above the pilot bracket when viewed through the observation door. The same pilot orifice is used with both natural and L.P. gas.

COMBUSTION AIR

In order for the flame to burn efficiently, it must receive adequate combustion air. The amount of combustion air required will vary depending on altitude, actual B.T.U. content of the fuel being used, gas pressure, conversion to another gas and other factors. The burner flame should be observed and any necessary adjustments made before the furnace is placed into service. See Table 9 for Factory Air settings.

Gas Gun

Combustion air box adjustment is made to the main burner by loosening the two lock nuts on the plastic air shutter, located on the left side of the burner blower housing. Air shutter adjustment line is located on the same side of the blower housing. Turn the plastic shutter to a smaller number (counter clockwise) for less air to a larger number (clockwise) for more air.

17. SERVICE GUIDE

BURNER ADJUSTMENTS

Burner settings and adjustments are made at the factory. However, these settings may change during shipping, handling, and installa-

Model Nat. Gas LP Gas Oil 66,000 3.5 3.5 3 86,000 5.3 6

Table 9. Factory Combustion Air

Settings

Gently tighten the lock nuts after completing the adjustment. For best results, use instrument to measure between 8-9% CO2, after the combustion air has been adjusted. Note: Do not over-tighten the lock nuts, otherwise the plastic air shutter may be damaged.

Oil Gun Only

It is recommended that the CO2 and Smoke levels should be measured for maximum performance. CO2 readings should be 10-11% for 66,000 BTUH furnaces and 12-13% for 86,000 BTUH furnaces. The Smoke should be N0. 0 on the Bacharach Scale, and 0 to 0.02 negative draft over fire.

Electrode Setting (Oil Gun Only)

Poor ignition of the oil spray may result if the electrodes are not adjusted as shown in Figure

32. Do not permit any electrodes to be grounded to any surface.

Switching the Honeywell R7184 Ignition Control between Interrupted and Intermittent Duty (Oil Gun Only)

The Honeywell oil primary control can be switched between interrupted and intermittent ignition control. To switch from interrupted duty (Factory set) to intermittent duty, remove the igniter wire from the blue control wire. Attach the burner motor and igniter wire to the orange control wire. Cap and reseal the orange control wire. Cap and isolate the blue control wire.

5/32” GAP

ELECTRODE

CAUTION:

• Combustion air adjustment must be made only by a qualified technician. Improper air adjustment may cause unsafe operation, explosion and/or fire asphyxiation.

• If the input to the furnace is too great because of excessive gas pressure, wrong size nozzle or orifice, high altitude, etc., the burner flame will be sooty and can produce carbon monoxide, which could result in unsafe operation, explosion and/or fire or asphyxiation.

GAS CONVERSION

This gas fired heating appliance was shipped from the factory for use with natural gas. However, the appliance can be converted for use with LP gas. Use the following procedure for gas conversion of the burner.

ATMOSPHERIC AND DIRECT IGNITION FURNACES a. Follow the instructions to “Turn Off Gas to the

Appliance.”

b. Disconnect the gas pipe union and the elec-

trical wires connected to the gas valve.

c. Remove the pilot tube and thermocouple

from the gas valve (M1G*).

Honeywell

1 3/8”

5/16” ABOVE CL

0-1/16”

NOZZLE

Figure 32. Oil Gun electrode Position

Valve

PRESSURE REGULATOR CAP

Figure 33. Convertible Pressure

Regulator Cap

OTHER SIDE OF CAP

M11678

Robertshaw Valve

Figure 34. Convertible Pressure

Regulator

d. To remove the gas valve assembly, remove

screw(s) from gas valve bracket. Gas valve and spud may be removed. Orifice is located at the end of the spud (M1G*,M1M*),or remove three (3) bolts from U-shaped manifold plate and orifice assembly (M1B*).

e. Replace the main orifice with the L.P. gas

orifice supplied in the envelope located by the gas valve. Check to insure the orifice size

matches the nameplate. f. It is not necessary to convert the pilot orifice. g. For Honeywell gas valves with the regulator

converter (Figure 33), check for the letters

NAT or LP on the pressure regulator cap.

Unscrew the cap, invert it, replace, and

tighten until snug. h. For the Robertshaw gas valve with the regu-

lator converter (Figure 34), remove the black

cover and unscrew the converter located on

top of the gas valve. Invert the converter.

(For “LP” the red ring will be located at the

bottom and the “LP” stamping on the con-

verter will appear right side up.) Then screw

converter back into the regulator, hand tight

plus 1/8 turn, and replace the black cover

onto the converter top to protect the threads. i. Reassemble the burner assembly into the

furnace. j. Reconnect the gas piping and electrical wires

to the gas valve. k. Open the manual shut-off valve and follow

the FURNACE START-UP procedure as

outlined previously in this manual to put the

furnace into operation.

NOTE: The pilot flame is adjustable by turning the adjustment screw located on the gas valve with a small screwdriver. (See Figure 29)

TROUBLESHOOTING - STANDING PILOT MODELS

Main Burner Does Not Come On

a. Check the electrical supply to the furnace. b. Be sure the furnace On-Off switch is in the

“ON” position. c. Check for proper thermostat operation. d. Check for broken or open thermostat wires.

e. Check to make sure the insulation located on

the inside of the front panel is glued securely

around the fan switch and the limit switch. f. Shut off the electrical supply to the furnace

and remove the electrical box cover. g. Check for a defective transformer or blown

fuse. h. Check electrical circuit for proper grounding,

polarity, and make sure the electrical con-

nections are tight. i. Check to see if limit switches may have failed

to close. j. Replace the electrical box cover and restore

electrical power to the furnace. Turn the On-

Off switch to “ON” and raise the thermostat

setting above room temperature. k. Check for 24 volts at the gas valve. l. Replace the gas valve if the pilot is estab-

lished and it does not open when powered

with 24 volts.

Gas Valve Powered (24 volts)– No Main Flame

a. The manual shut-off valve must be on. b. The pilot flame must be established. c. The gas valve control lever must be in the

“ON” position. d. Check gas pressure coming to the gas

valve. e. Replace the gas valve if the main burner does

not come on under the above conditions.

Pilot Will Not Light or Goes Out

a. Check the incoming gas pressure. b. Check for the proper pilot orifice. See the

nameplate SPECIFICATION. c. Check for proper pilot flame adjustment. See

“BURNER ADJUSTMENTS.” d. Check the thermocouple millivoltage.

• Millivoltage should read between 18 and 30

mv.

• If the closed millivolt reading is not between

18 and 30 mv., the gas valve electromagnet

Control Module Status Indicators - M1M Series

Control Status

The Red LED labeled “STATUS” is provided to indicate system faults.

Steady ON: Control OK Steady OFF: No power Rapid flash: False flame or internal control fault One flash: Limit switch is open Two flashes: Pressure switch is open Three flashes: Pressure switch is stuck closed Four flashes: Lockout due to failed ignition Five flashes: 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, yellow LED will flash.

Control Module Status Indicator - M1B

a. One flash-the control is in lock-out because the inducer centrifu

gal switch is or was stuck closed.

b. Two flashes-the control is in lockout because the signal was not

received by the control that the inducer centrifugal switch had closed within the time.

c. Three flashes-the control is in lockout because a failed ignition

attempt, a gas valve error, or a false flame sensed during the warm up period. If false flame has been sensed, the control will return to normal operation, and repeat ignition sequence when the false flame is not present.

d. Four flashes-the control is in lockout due to a failure within the control

board.

Control Module Status Indicator - M1S* Series

The indicator light on the oil primary control provides lockout, recycle, and cad cell indications as follows:

1. Flashing 1/2 second on, 1/2 second off - system is locked out or in restricted mode.

2. Flashing 2 seconds on, 2 seconds off - control is in recycle mode.

3. Indicator light is on - cad cell is sensing flame.

4. Indicator light is off - cad cell is not sensing flame.

may be defective. Replace the gas valve if

necessary. e. Be sure the pilot shield is in place. f. Check for gas leaks in the pilot line or the pilot

assembly. g. Check the flue assembly to make sure all

connections are tight. h. See the FURNACE START-UP procedure

for lighting details.

Main Flame Is Not Burning Properly

a. Check the manifold gas pressure. b. Check for the correct main burner orifice.

- See the nameplate SPECIFICATION.

c. Check the flue for any blockages or loose

connections.

d. Check the combustion air passages for block-

age.

High Gas Bills

a. Be sure the proper orifices are being used. b. Be sure the return air system is clear and free

of blockage. c. Be sure the furnace filter is clean. d. Be sure the home is insulated, that windows

and doors fit tightly, and that there are no

leaks in the heating duct system. e. Check the room thermostat to be sure the

setting is not higher than necessary. Low

humidity requires higher temperatures for the same level of comfort. Check for proper humidity level in the home.

TROUBLESHOOTING DIRECT IGNITION FURNACES INCLUDING GAS GUN

Burner Motor Does Not Run— Thermostat Calls For Heat

a. Check the electrical supply to the furnace. b. Be sure the furnace On-Off switch is in the

“ON” position.

c. Defective thermostat circuit - white and red

thermostat low voltage leads (M1M*, M1B* models). If the burner motor or combustion fan runs, check:

• Thermostat connections

• Thermostat

d. No voltage to control module - determine if 24

volts (or 120 volts) is available to the control module. If voltage is not available check for:

• Blown fuse, defective transformer, circuit breaker, no electrical supply.

• Limit switch open.

• Loose connections.

Combustion Blower Does Run - No Flame

a. Defective centrifugal switch (M1B* Model).

• Check the operation of centrifugal switch by removing end bell of the burner motor.

• Clean contacts of motor.

• If the contacts are closed, replace the motor.

b. Defective pressure switch (M1M* and M1G*

077, 090 Models) - check air tube and electrical connections.

c. Burner in purge mode - allow 75 seconds for

flame establishing period.

d. Check for proper electrical connections at

purge timer, control box, or gas valve.

e. Check for gas supply - gas line valve on,

control lever on.

Control Module Is Powered— Ignitor Does Not Heat Up

a. Disconnect ignitor leads at AMP receptacle

and check for 120 volts at the plug during ignition sequence.

b. Replace ignition control if 120 volts is not

available at AMP plug during ignition sequence.

120 Volts Is Available At AMP Plug— Ignitor Does Not Heat Up

a. Disconnect power to the furnace. b. Disconnect AMP plug to the ignitor, and

check ignitor resistance with an ohm meter.

Set on RX1 scale.

• Normal reading should be 40 - 75 ohms.

• If above or below this rating at room temperature change ignitor.

c. Check for continuity from ignitor receptacle

to burner.

Main Flame Ignites— Burner Locks Out

a. Ignition control is not properly grounded. b. Defective ignition control. c. Improper polarity of 120 volt power supply. d. Ignitor has hairline crack. e. Improper gas pressure or burner air adjust-

ment is not allowing flame to contact ignitor tip for flame rectification.

f. Misaligned ignitor does not allow flame to

contact ignitor tip for flame rectification.

Burner Short Cycling —Thermostat Calls for Heat, Limit Switches Closed

a. Check for polarity. b. Check ground. c. Check flue. d. Check combustion air. e. Check gas pressure. f. Check orifice. g. Check the position of ignitor, a normal read-

ing should be 40-75 ohms.

24 Volts Supplied To Gas Valve During Ignition — No Main Gas Flow

a. Gas valve may be defective. Replace if

necessary.

b. Gas piping may be plugged. Check for

adequate gas supply to gas valve at union.

Burner Operates— Insufficient Heat

a. Check thermostat for proper setting and

location. Thermostat should not be located where it will be affected by another heat

source. b. Check for clean filter and proper air flow. c. Check burner for proper gas firing rate. d. Be sure unit is not undersized for its thermal

load. e. Check thermostat anticipator. The nominal

anticipator setting is 0.4.

Burner Flame Without Motor Running

a. Gas valve stuck open, check gas valve for

proper operation (replace if necessary) and

inspect heat exchanger. b. Check for 115 volts to the combustion blower

motor; replace if necessary.

c. If no power to combustion blower then check

wiring and control module; replace if necessary.

Led Flashes Cad Cell Resistance in Ohms

1 0 - 400

Circulation Air Blower Will Not Operate Even Though The Burner Does Operate

a. Check thermostat “G” wiring. b. Check wiring to motor. c. Check for a defective motor.

TROUBLESHOOTING - OIL GUN

Honeywell R7184 oil gun control only. Burner does not start with a call for heat.

1. Check the electrical supply to the furnace.

2. Be sure the furnace door switch is in the on position.

3 Check for line voltage at the oil primary

control. The voltage should be 115 VAC.

4. Check indicator light with burner off, no call for heat (no flame). a. If indicator light is on, the cad cell is seeing

stray light or the cad cell or controller is

defective. b. If indicator light is off, go to step 5. c. If flashing, refer below (a. Reset primary

control).

5. Jumper T to T terminals on primary control. a. If burner starts, check thermostat or limit

wiring connections.

b. If burner does not start, turn off power.

Check all wiring connections.

c. If burner does not start, replace R7184

control.

Burner starts, then locks out on safety with indicator light flashing at ½ second on,

second off.

a. Reset primary control.

To reset the control from lockout, the button needs only to be pressed and released. If it is in restricted mode, the button should be held in for 30 seconds (until the light flashes twice, or until the light stops flashing on earlier models).

Note: Restricted Mode: If the control locks out three times in a row without a complete heat cycle between attempts, the lockout becomes restricted mode.

1. If indicator light stops flashing and ignition remains off, primary control could be defective. If line voltage is present at the ignitor terminals, but there is no ignition, the ignitor is probably defective and needs to be replaced.

2. If indicator light stops flashing, burner

2 400 - 800

3 800 - 1,600

4 >1600

Table 10. Cad Cell Resistance when

sensing flame

turns on, but control locks out again, check cad cell if cad cell is Okay, replace primary control.

3. If indicator light continues to flash at 1/2 second on, 1/2 second off, verify that control is not in restricted mode. If restricted mode, reset it. If not in restricted mode, replace R7184.

4. If indicator light stays off while the flame is on, check cad cell sighting for view of flame.

5. If burner locks out, check cad cell resistance. (See Table 10)

6. If burner keeps running, system is Okay.

7. If indicator light is off, check cad cell assembly after disconnecting line voltage power.

b. Burner will not start, and indicator light is

flashing at 2 second on, 2 second off. Hold the reset button down for 1-2 second. If indicator light continues to flash, wait for 60

- 70 seconds. If it still continues to flash, replace the primary control.

c. To check cad cell resistance.

Press and release the button during the run mode. The light will flash to indicate the cad cell resistance. For proper burner operation, it is important that the cad cell resistance reaover 1600 Ohms. For cad cell resistance, see Table 10.

Figure 35. Periodic Cleaning

Check for Ice Here

Figure 36. Roof Jack

WARNING:

Do not obstruct any return air openings, including the grille on the furnace. To do so may cause the furnace to activate the high limit and shut down, or it may cause asphyxiation.

18. MAINTENANCE

By Homeowner

1. Return Air - On some closet installations the return air opening to the furnace may be on the floor, on the door, on the side wall of the closet, or some combination of these. The upper grille on the front of the furnace admits return air to the blower. Return air must be provided back to the circulating blower in order to provide air distribution.

2. Filters - At least twice each season (more often in dusty areas) remove and clean the air filters with a vacuum or with warm water and soap. Reinstall when dry. Also clean dust and lint around furnace and in the furnace vestibule. (Figure 35.)

3. Seasonal Service Information - During extremely cold weather, ice may form on the furnace roof jack. Small amounts of ice forming on the roof jack will present no problems to proper 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 portions of the roof jack, it must be carefully removed (Figure

36).

By Serviceman

All furnaces need periodic service at the beginning of each heating season. Call your serviceman to:

a. Remove the air circulator and clean all dust

and lint from the unit with a stiff bristle brush.

b. Inspect the combustion chamber blower

compartment, flue collar and Roof Jack.

c. Check the gas valve (if applicable) and fuel

line connections for leaks.

d. Make any adjustments necessary for good

operation.

WARNING:

Use of furnace or air conditioning components that are not included in the certification of this appliance may create a hazard, invalidate the certification, and in many states, make installations illegal. Listed NORDYNE air conditioning components are specified on the furnace label.

ADDITIONAL OIL FURNACE MAINTENANCE

In addition to the preceding, the following should be performed by a qualified service contractor at least once each season for oil-fired furnaces: a. Replace the oil nozzle with the type nozzle

specified for your furnace.

b. Clean, adjust and replace if necessary the

spark electrodes.

c. Reset the nozzle/drawer assembly to fac-

tory specifications.

d. Clean the inside of the furnace heat ex-

changer and replace the combustion liner if necessary.

e. Clean or replace the oil filter element at the oil

tank.

f. Adjust the burner for top efficiency and check

to make sure all fittings are leak-tight.

19. OPTIONAL ACCESSORIES

Necessary when the Furnace is Used with Some Central Air Conditioners

If an air conditioner is installed that does not use the furnace blower for air distribution and that operates independently of the furnace, the thermostat system must have an interlock to prevent the furnace and air conditioner from operating at the same time. This interlock system usually contains either a “Heat-Cool” switch which must be turned to the “Heat” or “Cool” position to activate either heating or cooling operation, or a positive “OFF” switch on the cooling thermostat.

Figure 37. Coil Cavity Damper (Non-Platinum Series Only)

Figure 38. Damper without Coil Cavity (Non-Platinum Series Only)

Thermostat

Route Thermostat wire to intended Platinum Series AC/HP location. Coil and secure extra six feet of wire to home's undercarriage.

Red

White

Green

Yellow

M1* A/C Ready Furnace

Red

White

Green

Grey

Platinum Ready Wiring

Figure 39. Thermostat Wiring A/C Ready Models

Thermostat

Red

White

Green

Yellow

Red

White

Green

Grey

Standard Wiring

M1* A/C Ready Furnace

Blower Speed Selection Chart for M1*B Models and for use with Blower Kit No. 903773 1/4 Hp 3 Speed

Heating Cooling Speed/ Evap Coil

Furnace Input Speed

2 Ton 3 Ton

Setting

2-1/2

Ton

086, 090 H L M H

066, 070, 077 M L M H

056 L L M H

Blower Speed Selection Chart for M1*C Models and for use with Blower Kit No. 903413 1/2 Hp 4 Speed

Heating Cooling Speed/ Evap Coil

Speed 2-1/2 Ton

2 Ton 4 Ton

Furnace Input Setting & 3 Ton

077, 086, 090 ML L ML MH H

056, 066, 070 L L ML MH H

Blower Speed Selection Chart for M1*D Models and for use with Blower Kit No. 903414 and 903890 3/4 Hp 4 Speed

Heating Cooling Speed/ Evap Coil

Furnace Input Speed 2-1/2 Ton 3-1/2 Ton

2 Ton 5 Ton

Setting & 3 Ton & 4 Ton

3-1/2

Ton

077, 086, 090 ML L ML MH H

056, 066, 070 L L ML MH H

Table 11. A/C Blower Selection

The furnace must also be equipped with an automatic damper (See Figures 37 or 38, NORDYNE p/n 901996 for furnaces without coil cavity, or p/n 901083 with coil cavity) to prevent cold air from being discharged up around the heat exchanger. Cold air may cause condensation inside the heat exchanger which can lead to rust and early failure.

OPTIONAL ADD-ON AIR CONDITIONING

Ask your dealer or contractor about NORDYNE add-on central air conditioning systems. There is a split-system or package air conditioner designed for your total comfort needs. Whether split system or single package, an energysaving NORDYNE unit is available that has been designed specifically for manufactured housing applications and can best handle your home comfort needs.

Listed and ARI Certified, all models are protected by the NORDYNE Air Conditioner Limited Warranty.

Platinum series units are self contained package units with compressor and cooling coils. They are designed as a drop in system when used with the AC ready M1.

Single package unit includes cooling coils, compressor, and vertical discharge fan. This type of unit connects with the existing home air duct system (an optional close-off damper is required with the furnace).

Split system unit with vertical discharge for quiet operation connects with NORDYNE cooling coil furnace (optional coil cavity required with “A” model furnaces).

BLUE

VENT SWITCH

MANUAL RESET

703887B

AUX. LIMIT

BLUE

WHITE

Gas Atmospheric Furnaces, M1GH 056, 070

ONLY

MOTOR

BLOWER

HEATING

color coding. (See furnace data label for

electrical information.)

NOTES

1. Incoming power must be polarized. Observe

2. If any of the original wires (as supplied with

COMMON

BLACK

654321

FOR OPTIONAL

ACCESSORY KITS

BLACK

CONNECTOR

HOUSING CAP

ON/OFF

SWITCH

the appliance) must be replaced, use 105˚C

Thermoplastic type wire or its equivalent.

RED GRAY

WHITE

BLACK

FAN SWITCH

HI-LIMIT

3A FUSE

BLACK

GRAY

BLACK

24 V

115 V

RED

L1 N

TRANSFORMER

SUPPLIED

BY INSTALLER

WHITE

ORANGE

BLACK

ORANGE

WHITE

BLUE

FURNACE ELECTRICAL BOX

GRAY

SCREW

GROUND

LEGENDS

115V: FIELD 115V:

24V: FIELD 24V:

GAS VALVE

FAN ON/AUTO SWITCH

Figure 40. Gas Atmospheric Furnace, M1GH 056, 070 Models

20. WIRING DIAGRAMS

NEUTRAL

FAN

COMBUSTION

BLACK BLACK

SWITCH

PRESSURE

703888C

AUX. LIMIT

BLUE

Standing Pilot With Induced Draft Furnaces,

M1GH 077, 090 Models.

MOTOR

BLOWER

HEATING

color coding. (See furnace data label for

electrical information.)

NOTES

1. Incoming power must be polarized. Observe

BLACK

654321

BLACK

ONLY

CONNECTOR

ON/OFF

SWITCH

the appliance) must be replaced, use 105˚C

Thermoplastic type wire or its equivalent.

2. If any of the original wires (as supplied with

BLUE

WHITE

RED GRAY

WHITE

BLUE

BLACK

HOUSING CAP

BLACK

364

152

FAN

SWITCH

HI-LIMIT

GRAY

BLACK

3A FUSE

GRAY

BLACK

WHITE

24 V

115 V

RED

L1 N

TRANSFORMER

BLACK

SUPPLIED BY

INSTALLER

WHITE

ORANGE

WHITE

ORANGE

BLACK

GRAY

GROUND

LEGENDS

115V: FIELD 115V:

24V: FIELD 24V:

BLUE

FURNACE ELECTRICAL BOX

BUSHING

GAS VALVE

FAN ON/AUTO

SCREW

Figure 41. Standing Pilot with Induced Draft Furnace, M1GH 077, 090 Models

SWITCH

NEUTRAL

MOTOR

4 SPEED

BLOWER

HEATING/COOLING

654321

WHITE

ORANGE (MED. LO) BLUE (MED. HI) BLACK (HIGH) RED (LOW)

VENT SWITCH

MANUAL RESET

710150 08/00

MOTOR

3 SPEED

BLOWER

AUX. LIMIT

BLUE

HEATING/

COOLING

BLUE

WHITE

654321

RED (LOW) BLUE (MED. HI) BLACK (HIGH)

CONNECTOR

HOUSING CAP

ON/OFF

SWITCH

WHITE

RED

BLACK

BLUE

RED

(SEE NOTE)

HI-LIMIT

RED GRAY

TIE WIRE

FAN

3A FUSE

GRAY

SWITCH

BLACK

GRAY

GREEN

WHITE

24 V

115 V

L1 N

TRANSFORMER

ORANGE

BLUE

BLACK

GREEN

152

364

A/C

BLOWER

RELAY

BLACK

ORANGE

WHITE

BLUE

FURNACE ELECTRICAL BOX

*M1G(C,D) Heating - replace orange wire with red wire (low speed)

GRAY

M1GB 070 Heating - replace orange wire with blue

NOTE: To run at same speed in both heating and cooling mode,

remove wire from either terminal 4 or 6 on the relay, then attach

jumper to terminals 4 and 6.

A/C & Heating Speeds: Refer to Table 10, A/C Blower Selection in the manual

GAS VALVE

information.)

coding. (See furnace data label for electrical

appliance) must be replaced, use 105˚C

NOTES

1. Incoming power must be polarized. Observe color

Thermoplastic type wire or its equivalent.

2. If any of the original wires (as supplied with the

SUPPLIED

BY INSTALLER

NEUTRAL

GROUND SCREW

LEGENDS

115V: FIELD 115V:

24V: FIELD 24V:

Figure 42. Gas Atmospheric Furnace, A/C Ready, M1G (B, C, D) 056, 070 Models

MOTOR

4 SPEED

BLOWER

HEATING/COOLING

WHITE

654321

ORANGE (MED. LO) BLUE (MED. HI) BLACK (HIGH) RED (LOW)

HOUSING

COMBUSTION FAN

CONNECTOR

PRESSURE

SWITCH

710151 08/00

AUX. LIMIT

BLUE

WHITE GREEN RED

GRAY

MOTOR

3 SPEED

BLOWER

HEATING/

COOLING

Observe color coding. (See furnace

data label for electrical information.)

NOTES

1. Incoming power must be polarized.

WHITE

654321

RED (LOW) BLUE (MED. HI) BLACK (HIGH)

CONNECTOR

HOUSING CAP

with the appliance) must be replaced,

use 105˚C Thermoplastic type wire or

its equivalent.

2. If any of the original wires (as supplied

WHITE

RED

TIE WIRE

ON/OFF

SWITCH

BLUE

BLACK

BLUE

RED

COMBUSTION

BLUE

364

FAN

HI-LIMIT

GRAY

BLOWER

RELAY

152

BLACK

SWITCH

BLACK

3A FUSE

GRAY

TRANSFORMER

BLACK

GREEN

24 V

BLACK

GRAY

WHITE

115 V

L1 N

GREEN

ORANGE

RED*

SUPPLIED

BY INSTALLER

152

A/C

BLOWER

BLACK

ORANGE

WHITE

RELAY

NEUTRAL

BLACK

GRAY

GROUND

A/C & Heating Speeds: Refer to

Table 10, A/C Blower Selection

in the manual

BLUE

FURNACE ELECTRICAL BOX

Jumper Wire - M1GB 090 Units Only

Otherwise Hi-Speed Connected

to Blower Relay (Black)

- M1GB 077 Heating: Orange wire

GAS

SCREW

LEGENDS

115V: FIELD 115V:

24V: FIELD 24V:

replaced by Blue

- M1GB 090 Heating: Orange wire

replaced by Black

VALVE

Figure 43. Standing Pilot with Induced Draft Furnace, A/C Ready M1G (B, C, D) 077, 090 Models

MOTOR

SUPPLIED

BY INSTALLER

Blower Wire Connections

Furnace

Wire #1

Wire #2 Wire #3 Wire #4

Model

Red

Black Blue Orange

M1MA 056/

Tie Tie Tie

Control

070/077/090

Wrapped Wrapped Wrapped

M1MB

Tie Control Tie Control

056

Wrapped Board "C" Wrapped Board "H"

M1MB

Tie Tie Co ntrol Co ntrol

070/077

Wrapped Wrapped Board "H" Board "C"

M1MB

Tie Co ntrol Tie Tie

Wrapped Board "H" Wrapped Wrapped

M1M(C,D)

Control Tie Tie Control

056/070

Board "H" Wrapped Wrapped Board "C"

M1M(C,D)

Tie Tie Tie Con tro l

077/090

Wrapped Wrapped Wrapped Board "H"

4 SPEED

BLOWER

MOTOR

3 SPEED

BLOWER

AUX. LIMIT

MOTOR

SINGLE

BLOWER

BLUE

SPEED

654321

WHITE

ORANGE (MED. LO) BLUE (MED. HI) BLACK (HIGH)

RED (LO)

654321

WHITE

RED (LO)

BLUE (MED. HI)

BLACK (HIGH)

654321

CONNECTOR

HOUSING CAP

See Table

TIE

WIRE

WHITE

GREEN

RED

GRAY

See Table

BLUE

BLACK

Board "H"

HI-LIMIT

BLUE

GREEN

COMBUSTION FAN

BLACK

TRANS-

24V

COM

24 V

FORMER

SCREW

GROUND

C W G R

123

456 789

115 V

L1 N

CONTROL

BLACK

LIGHTS

PRESSURE

ORANGE

See Table

XFRM

SWITCH

RED

WHITE

BLACK

WHITE

Blower Wire Table

CONTROL LIGHT STATUS

RED YELLOW

Steady ON Control OK Steady ON Good Flame Signal

Steady OFF No power Blinking Weak Flame Signal

Rapid Flash False flame or internal control fault Steady OFF No Flame Signal

1 Flash Limit switch is open

2 Flashes Pressure switch is open with inducer on

3 Flashes Pressure switch is closed with inducer off

4 Flashes Lockout due to failed ignition

FURNACE ELECTRICAL BOX

Jumper must be removed if

converting to a multispeed blower.

Jumper is required for M1MA

models and M1MB 090

A/C & Heating Speeds: Refer to

Table 10, A/C Blower Selection

in the manual

GAS VALVE

BLACK

710152 07/01

5 Flashes 115 vac & neutral reversed or no ground

Figure 44. Gas Direct Ignition Furnace, Heating & A/C Ready - All M1M Models

ON/OFF

SWITCH

BLACK

coding. (See furnace data label for electrical

information.)

appliance) must be replaced, use 105˚C Thermoplastic

NOTES

1. Incoming power must be polarized. Observe color

type wire or its equivalent.

2. If any of the original wires (as supplied with the

YELLOW YELLOW

GROUND SCREW

NEUTRAL

IGNITOR

LEGENDS

115V: FIELD 115V:

24V: FIELD 24V:

BUSHING

NL1

BUSHING

ITEM #10

(TYP. 5)

BLACK

BUSHING

RED

BUSHING

FROM "W"

WIRE - BLUE

FROM "C"

TERMINAL

WIRE - GRAY

BLACK

WHITE

VIOLET

WHITE

VIOLET

VALVE

SOLENOID

BLUE

ORANGE

WHITE

IGNITION MODULE

BLUE

BURNER MOTOR

BLACK

7104670 04/04

BLACK

GAS GUN BURNER

BLACK

BUSHING

AUX. LIMIT

MOTOR

IGNITER

BLUE

BLACK

INDL1HSI

CRG

654321

WHITE

ORANGE (MED LO) BLUE (MED. HI) BLACK (HIGH)

RED (LO)

654321

WHITE

RED (LO) BLUE (MEDHI)

BLACK (HI)

TERMINAL HOUSING

SPEED

SINGLE

BLOWER

MOTOR

4 SPEED

BLOWER

MOTOR

3 SPEED

BLOWER

BLACK

BUSHING

RED

WHITE

HSIGL2W

MODULE

CONTROL

TIE WIRE

ON/OFF

SWITCH

RED

PSI

WHITE

RED

FSI

BLUE

RED

GRAY

GREEN

PSO

FSG

BLUE

WHITE GREEN RED GRAY

CONNECTOR

HOUSING CAP

BLACK

GREEN

ORANGE

(SEE NOTE 3) RED

BLACK

GROUND SCREW

BURNER ELECTRICAL BOX

BLUE

FAN

SWITCH

HI-LIMIT

3A FUSE

GRAY

BLACK

A/C

BLOWER

RELAY 152

364

LINE CORD

(ITEM #12)

GAS VALVE

GREEN

24 V

115 V

RED

L1 N

TRANSFORMER

BLACK

SUPPLIED

BY INSTALLER

OIL GUN BURNER

WHITE

R7184B

PRIMARY

FROM 'R' WIRE (RED)

FROM 'W' WIRE (BLUE)

RED GRAY

BLACK

WHITE

ORANGE

WHITE

BLACK

CONTROL

GROUND

BUSHING

CRW

FURNACE

ELECTRICAL BOX

RECEPTACLE

SCREW

PRIMARY CONTROL

LEGENDS

115V: FIELD 115V:

24V: FIELD 24V:

LINE CORD

CAD CELL

Figure 45. Gas and Oil Furnaces, A/C Ready - M1 (B, S) 066, 086 Models

NEUTRAL

NOTES

1. Incoming power must be polarized. Observe color coding

(See furnace data label for electrical information.)

2. If any of the original wires (as supplied with the appliance) must

be replaced, use 105˚C Thermoplastic type wire or its equivalent.

3. On models M1(B,S)A and M1(B,S)086 jumper wire is installed.

On all other models, cooling speed is connected to black wire.

4. A/C & Heating Speeds: Refer to Table 10, A/C Blower Selection

in manual.

5 If any of the original wire supplied with the appliance is replaced, use

105˚C wire or equivalent.

6. Use copper conductors only.

21. EQUIVALENT ORIFICE SIZES AT HIGH ALTITUDES

(Includes 4% Input Reduction for Each 1,000 Feet)

FURNACE ORIFI CE SIZE AND ALTITUDE - FE ET

MODEL OUTPUT CAP ACITY SEA LEVEL 2000 3000 4000 5000 6000 7000 8000 9000 10000

M1M/G 056 ORIFICE SIZE - LP 45 46 47 47 47 48 48 49 49 50

M1M/G 070 ORIFICE SIZE - LP 42 42 43 43 43 44 44 45 46 47

M1M 077 ORIFICE SIZE - LP 40 41 42 42 42 43 43 44 44 45

M1G 077 ORIFI CE SIZE - LP 40 41 42 42 42 43 43 44 44 45

M1M 090 ORIFICE SIZE - LP 36 37 38 38 39 40 41 41 42 43

M1G 090 ORIFI CE SIZE - LP 36 37 38 38 39 40 41 41 42 43

M1B 066 ORIFICE SIZE - LP 43 44 44 44 45 45 46 47 47 48

M1B 086 ORIFICE SIZE - LP 37 38 39 39 40 41 42 42 43 43

ORIFICE SIZE - NAT. GAS 29 293030303031313132

OUTPUT- MBTUH 45.4 41.8 40. 1 38.5 37.0 35.5 34. 1 32.7 31.4 30.2 ORIFICE SIZE - NAT. GAS 24 2526272728282929 30

OUTPUT- MBTUH 56.7 52.3 50. 2 48.2 46.2 44.4 42. 6 40.9 39.3 37.7 ORIFICE SIZE - NAT. GAS 21 2323242526272828 29

OUTPUT- MBTUH 61.7 56.9 54. 6 52.4 50.3 48.3 46. 4 44.5 42.7 41.0 ORIFICE SIZE - NAT. GAS 21 2323242526272828 29

OUTPUT- MBTUH 59.9 55.2 53. 0 50.9 48.9 46.9 45. 0 43.2 41.5 39.8 ORIFICE SIZE - NAT. GAS 17 1819192021222324 26

OUTPUT- MBTUH 71.7 66.1 63. 5 60.9 58.5 56.1 53. 9 51.7 49.7 47.7 ORIFICE SIZE - NAT. GAS 17 1819192021222324 26

OUTPUT- MBTUH 69.7 64.2 61. 7 59.2 56.8 54.6 52. 4 50.3 48.3 46.3 ORIFICE SIZE - NAT. GAS 26 2728282829293030 30

OUTPUT- MBTUH 52.6 48.5 46. 6 44.7 42.9 41.2 39. 6 38.0 36.5 35.0 ORIFICE SIZE - NAT. GAS 18 1919202122232426 27

OUTPUT- MBTUH 68.2 62.9 60. 3 57.9 55.6 53.4 51. 2 49.2 47.2 45.3

Table 12. High Altitude

Reference Sources: ANSI Z233.1 & NFPA 54, National Fuel Gas Code. For Canadian high altitude (2,000 - 4,500'), reduce gas manifold pressure to 3.0” W.C. for natural gas and 9” W.C. for LP gas.

NOTE: Do not attempt to change the size of an orifice by drilling it out. To do so will

void the manufacturer’s warranty

INSTALLER: Please leave these installation instructions with the homeowner.

¢708672;¤

O’Fallon, MO

7086720

7086720 (Replaces 708074E)

Specifications and illustrations subject to change

without notice and without incurring obligations.

Printed in U.S.A. (12/06)

Nordyne M1M, M1G, M1B, M1S User Manual 2

Specifications and Main Features

Frequently Asked Questions

User Manual