Nordyne M1B Original instructions

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 build-
ing.
• Immediately call your gas supplier
from a neighbor’s phone.Follow the
gas supplier’s instructions.
• If you cannot reach your gas sup-
plier, call the fire department.
– Installation and service must be
performed by a qualified installer,
service agency or the gas sup-
plier.
WARNING:
Should overheating occur, or the gas
supply fail to shut off,shut off the man-
ual gas valve to the appliance before
shutting off the electrical supply.
WARNING:
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.
Owners Manual/Installation Instructions
Series M1B, M1G, M1M and M1S
Downflow, Direct Vent (Sealed Combustion)
Forced Air Gas and Oil Furnaces
LEAVE THESE INSTRUCTIONS WITH THE HOMEOWNER.

2
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
Table 1. Model Identification
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’)
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
M 1 M B - 056 A - B W

3
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 instruc-
tions and warnings in this manual to insure
maximum performance, safety, and operating
efficiency of these appliances. Improper instal-
lation 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 con-
ditioning 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 inTable
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 cus-
tomers the finest heating and cooling comfort
possible. NORDYNE constantly seeks to further
refine its products to continuously provide ex-
ceptional 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, fire-
places 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 cor-
rectly 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 neces-
sary to correct problems due to improper setup,
improper installation, furnace adjustments,
improper operating procedure on the part of
the user, etc.

4
Some specific examples of service calls which
cannot be included in warranty payments are:
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.
4. Resetting circuit breakers, blown fuses or
other switches.
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
an air conditioner, heat pump or other air
comfort devices.
8. Adding a Roof Jack extension because of
unusual wind and/or snow conditions.
9. Revising installation of the furnace flue as-
sembly (Roof Jack).
10. Adjusting or calibrating of thermostat.
11. Any construction debris which falls into flue
system.
Carefully review these responsibilities with your
manufactured housing dealer, service company
or gas supplier so there will be no misunderstand-
ing at a later time.
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.
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
Table 2. M1 Furnace Specifications
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 .50 Gph 0.3 x Burner Model 1/5 2½
M1SB 066 66 54 .50 Gph 0.3 x AF-10 Nozzle 1/4 3
M1SC 066 66 54 .50 Gph 0.3 x AF-10 Nozzle 1/2 4
M1SB 086 86 71 .65 Gph 0.3 x Spray Angle 1/4 3
M1SC 086 86 71 .65 Gph 0.3 x 80° A 1/2 4

5
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,explo-
sion, fire and/or asphyxiation.
• If a malfunction has occurred, or if
you feel that the furnace is not operat-
ing as it should, contact a qualified
service agency or gas utility for as-
sistance.
4.INSTALLATION STANDARDS
Installer shall be familiar with and comply with all
codes and regulations applicable to the instal-
lation 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.
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 instal-
lations.
Table 3. Field Installation Blower Assemblies
Figure 1. Overall Dimensions
“A”- 56"
23 3/4"
“B”- 76"
19 3/4"
“A” Model-
w/o Coil Cabinet
“B” Model-
w/Coil Cabinet
Removable access
panel should be
installed above
furnace door frame
to access roof jack
Nearest
Wall or
Partition
18"
(457 mm)
6" (152 mm)
Top Clearance
0" Side
Clearance
to Furnace
Cabinet
6" (152 mm)
Top Clearance
0" Side
Clearance
to Furnace
Cabinet
Provide min. 235
sq. in. (1516 cm )
open free area in
front or side wall
2
or
In closet
door
located
at top,
center
or bottom
CLOSET DOOR
6" (152 mm)
Top Clearance
Provide min. 250
sq. in. (1613 cm )
open free area in
front or side wall
2
a fully
louvered
door may
be used
CLOSET DOOR
6"
(152 mm)
1"
(25 mm)
0" Side
Clearance
to Furnace
Cabinet
or
in closet
door
Figure 4. Special 1” Clearance
Figure 3. Closet Installation
Figure 2. Alcove Installation
Part No. Blower / Motor Assembly A/C Capacity
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

6
Table 4. Minimum Clearances
Figure 5. Non-Platinum
Supply Duct System
A Single trunk duct
BDual trunk duct
w/crossover connector
C
Transition duct
w/branches
c. American National Standard (ANSI-Z223.1/
NFPA-54) and/or CAN/CSA B149 for all gas-
fired 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 standards
UL 307A & B, UL727-1999, ANSI 21.47a
- CAN/2.3a - 1995, and CSA B140.10.
Ce générateur d’air chaud doit être installe
conformément aux instructions du fabricant et
aux codes locaux. En l’absence de code local,
respecter la norme ANSI Z223.1, institulé Na-
tional Fuel Gas Code ou les codes d’installation
CAN/CSA-B149.
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.
Furnace may be installed on combustible floor-
ing when using NORDYNE Duct Connectors
(see Section 10).
When installed in a residential garage, the fur-
nace 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.
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 in-
stalled 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”, require-
ments 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 require-
ment).
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:
CAUTION:
HAZARD OF ASPHYXIATION: Nega-
tive 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.
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”

7
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
MIN. ADJ.
LENGTH
MAX. ADJ.LENGTH
5 = 5” FLUE DIA.
Table 5. Roof Jack Assemblies
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 inadvertent
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).
SSAW T27 47 - 2
AW= ALL WEATHER
FLASHING
PITCH/12" RISE
0=FLAT
2=2.5/12
4=4/12
MIN. ADJ.
LENGTH
F=
S=
FLAT FLASHING
SLANT FLASHING TYPE:
BLANK=NON-TRANSIT
T= TRANSIT MODE
MAX. ADJ.
LENGTH
FLUE STEEL TYPE
A= ALUMINIZED
S=STAINLESS
All Weather Roof Jack Assemblies
Figure 6. Roof Jack Assemblies
ROOF JACK
SLANT DECK
FLASHING
PITCHED
ROOF
CEILING
CEILING
CAVITY
ROOF
OPENING
"X" (SEE TABLE 1)
Flue Pipe
Combustion
Air Pipe
56" or 76"
Furnace
"A"
"B"
Figure 7. Example of Flat Jack
with Flashing
Figure 8. Example of 2½/12 Slant Jack with
Flashing
MODEL NUMBER APPROX. ADJ. LENGTHS BELOW
FLASHING
FO 1323-5 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’
SOT2846-5 28’ - 46’
MODEL NUMBER APPROX. LENGTH
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”

8
e. If the roof jack crown is covered or blocked with
snow, the furnace will not operate properly. 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.
These extensions are available as optional ac-
cessories and may be purchased through your
NORDYNE distributor.
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).
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 ob-
tain 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.
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.
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.
Table 6. Slant Deck Flashings
Table 7. Floor Cavity Sizes
Optional Deck Flashings for Flat and 2.5/12 Pitch
Roof Jacks.
(4/12 Pitch Roof Jacks not applicable.)
IF ROOF PITCH IS: USE SLANT DECK
FLASHING NO. “X” FACTOR IS:
“F Series Roof Jack
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 Pitch 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”
If “X” (Floor Cavity) is: Use Duct Connector
Model Part Number:
English Metric (mm) Finger Tab Screw Down
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

9
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).
Figure 10.
Figure 9.
13 1/4"
10 1/4"
19”
19"
Top View
of
Finger Tab
Duct
Connector
x
SUPPLY AIR DUCT
FLOOR CAVITY
(depth equal to "X" in Figure 11 and Table 7)
Figure 11.
XSEE
TABLE 7
REDUCER
*FELT-SEAL
SPACERS
C
*OPENING TO DUCT
WITH PLATE (C) REMOVED
OPENING BECOMES
13-1/4” x 13-1/4”
*INDICATES FINGER TAB DUCT CONNECTOR ONLY
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”.
11. INSTALLATION
Required floor, ceiling, and roof cut-out openings
must be carefully located to avoid misalignment
of the furnace and Roof Jack (see Figures 12 &

10
Figure 12. Closet or Alcove
CEILING AND ROOF
OPENINGS
C
L
C
L
13-1/2"
10"
23 -1/4"
FLOOR
OPENING
C
L
C
L
ALT. FUEL
LINE HOLES
SIDE WALL
REAR WALL
FUEL LINE
HOLE
FLOOR CUT-OUT
FOR DUCT CONN.
CEILING
CUT-OUT FOR
FLUE AND
ROOF JACK
(See Fig 12)
C
L
C
L
C
L
C
L
24"
23-1/4"
21-3/4" 14-1/2"
2-1/4"
2-3/4"
20"
14-1/2"
13-1/2"
FURNACE OUTLINE
FLOOR CUT-OUT
FOR OPTIONAL
COOLING COIL
FOR NON-PLATINUM
SERIES UNITS
10"
12-7/8"
14-3/4"
15-1/2"
1-1/4" D.
ALT FUEL-LINE
ENTRY FURNACE
OUTER DOOR
REAR WALL OF CLOSET OR ALCOVE
FUEL-LINE
1-3/4"
2"
3/4"
Figure 13. Cut-Out Locations

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, measured
13 1/2” from the rear wall of closet or alcove
along the center line of furnace and floor
opening. (See Figure 13)
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 DEBRISTO FALL INTOTHE
FURNACE. THIS COULD CAUSE UNSAFE
OPERATION AND VOIDS THE FURNACE
WARRANTY. Use the top cap that comes
with the furnace packaging (or alternate pro-
tector) 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 opening
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.
Figure 15. Duct Connector
Figure 14. Mounting Plate
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
MOUNTING
PLATE
FLOOR
OPENING
UNDER DUCT OPENING
Non-Platinum Series Platinum Series
DUCT
CONNECTOR
MOUNTING
PLATE
SCREWS
FUEL
LINE
HOLES
14” SUPPLY
CONNECTION

12
Figure 16. Installation of Duct Connector
d. Cut out duct opening 1/4” larger than area
marked.
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 CON-
NECTOR
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 con-
nector. 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.
INSTALLING FINGER TABBED DUCT CON-
NECTORS
a. Place duct connector through the floor opening
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 connec-
tor 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
This procedure may also be used to install a
furnace duct connector to narrow metal ductwork
where insufficient clearance prevents 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.
Duct
Duct Connector
Narrow Duct
Figure 17.
TABS
TABS
DUCT
DUCT
1. INSERT DUCT CONNECTOR INTO
DUCT CUT-OUT.
2. BEND BOTTOM TABS OVER
AND ONTO THE UNDERNEATH
DUCT SERVICE.

13
Staple Folded Duct
Flap (typ) to side of Duct
Connector
Duct
STEP 4.
STEP 1.
"A" "A"
"B"
"B" Cut- Out
Area"A"
Cut- Out
Area "A"
Fold Back Flap "B"
Fold Back Flap "B"
Top of Duct
"A" "A"
STEP 2.
"B"
"B"
Fold Back Flap"B"
Cut
Lines Duct
Fold Back Flap"B"
STEP 3.
Bend Duct Connector Tabs Up
and Over- (along length of duct)
Duct
Flap "B"
Duct
Figure 18.
INSTALL FURNACE
a. Remove furnace outer door(s) and bottom
fuel line knockout.
b. Place furnace onto duct connector and center
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 as-
sembly 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 added protection
against leaks, coat the flashing plate and fasten-
ers 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).
12. INSTALLATION OF TRANSIT-
MODE VENTING SYSTEM
MANUFACTURED HOME FACTORY
a. Furnace to be installed per furnace installation
manual.
b. Roof Jack to be selected fromTable 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)

14
MTG. PLATE TABS SLIDE FURNACE
ALL THE WAY BACK
ONTO MTG. PLATE
SUPPLY AIR DUCT
Knockout Over Holes
SECURE FURNACE
WITH 2 FASTENERS AT FRONT
CORNER HOLES
SUPPLY AIR DUCT
FUEL
LINE
HOLES
MTG. PLATE TABS SLIDE FURNACE
ALL THE WAY BACK
ONTO MTG. PLATE
SECURE FURNACE
WITH 2 FASTENERS
AT FRONT CORNER HOLES
Figure 19. “A”, “B”, & Platinum
Cabinet Furnaces
Figure 20. “A” Cabinet Furnace on 911969
Coil Cabinet (Non-Platinum Series)
• 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.
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,explo-
sion 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.
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Secure Roof Jack with
appropriate fasteners
after connecting to
furnace
Ceiling
Caulk under roof
flashing to prevent
water leakage
Roof
Optional #901943
Ceiling Trim Ring
or #902521
2-piece Ceiling Ring
Figure 21. Flat Roof
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Ceiling
Caulk under roof
flashing to prevent
water leakage
Secure flashing
with appropriate
fasteners
Secure lower roof
jack section with
no. 10 S.M. screws
Roof
Upper Roof
Jack Section
Optional
Slant-Deck
Flashing
Figure 23. Pitched Roof
Figure 22.

15
CAUTION:
Label all wires prior to disconnection
when servicing controls.Wiring errors
can cause improper and dangerous
operation. Verify proper operation
after servicing.
ATTENTION:
Lors des opérations d’entretien des
commandes, étiqueter tour les files
avant des les déconnecter. Toute er-
reur de câblage peut être une source
de danger et de panne. S’assurer du
bon fonctionnement de l’appareil
âpres tout entretien.
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. Use
of copper conductors is recommended.
WARNING:
Any attempt to operate furnace be-
fore 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
cold drafts. The nominal anticipator setting is
0.4. (Refer to the thermostat literature for ad-
ditional information.)
SCREWS
COMPLETED
ASSEMBLY
TO FURNACE
UPPER ROOF
JACK (CROWN)
INNER FLUE
PIPE
FLUE ASSEMBLY
OUTER PIPE
FLASHING
WEATHER CAP
Figure 24.

16
14. FUEL PIPING
Sizing and installation of fuel lines must be in ac-
cordance 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 installa-
tions 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 instruc-
tions for the gas conversion are found on the
lighting instruction label attached to the furnace
in Section 16, Service Guide.
For natural gas operation, the furnace is designed
for 7” W.C. inlet pressure. Pressure is reduced
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 undercar-
riage.
Once the furnace is installed check the ther-
mostat 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.
If the heat anticipator is set too low, the furnace
may cycle frequently and not provide comfort to
the homeowner.
Figure 25. Control Panel (All Models)
To Combustion
Blower or
Flame Roll-Out
Switch
Thermostat Wires
Blower
Plug
On-Off
Switch
On-Auto
Switch
(Heating Mod-
els Only)
To Gas Valve
or Burner
Power
Entry
Furnace Con-
trol Box

17
Table 8. Thermostat Wire Gauge
To Gas
Supply
Floor
Control
Panel
On-Off-Fan
Switch
Alt. Fuel
Line Entry
Floor Cavity
Figure 26. Typical Gas Piping
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 con-
version can cause unsafe operation,
explosion, fire and/or asphyxiation.
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.
Use a tank capacity suitable for the applica-
tion 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.
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
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.
T’STAT
Wire Gauge
Recommended T’STAT Wire
Length (Unit to T’STAT
2-Wire
(Heating)
5-Wire
(Heating/Cooling)
24 55 25
22 90 45
20 140 70
18 225 110

18
Figure 27. Typical Oil Piping for Above Ground (Single-Line) Supply
If fuel pump fails to lift oil, check for air port plug and repeat priming procedure. leaks and tighten all fuel fittings. Re- prime fuel pump by injecting fuel oil into optional (top) return port. Replace return
R
Top of Tank
8 ft.
Shut-off Valve
Optional Fuel Filter
Alternate Fuel Line Entry
Optional Return
Pressure Gauge Port
Nozzle Port
Inlet Port
Air-Bleed Valve
Return Port & Internal By-Pass
Optional Inlet
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Control Panel
Oil Furnace
On-Off-Fan Switch
Floor Cavity
Oil-Gun Burner
Floor
Flue Gas Sampling Hole
Drain
End of Oil Supply Line 3" to 5" Above Bottom Drain
Guide pipe
Gauge
Vent with Cap 2" Duplex
Bushing
2" Fill
3/8" Oil Supply Line
Note: Additional venting may be required if tank is filled rapidly.

19
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 1-6
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 open-
ing 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 recom-
mended.
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, rum-
bling 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.
Prepare the burner for priming by attaching a
clear plastic hose over the bleed port fitting and
fully opening the pump bleed port.Use a suitable
container to collect purged oil.
To assure continuous operation, use a wire to
jump terminalsT-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.
If furnace is equipped with the Beckett 7505
primary control, priming the oil pump procedure
is as follows:
1. After the burner starts, press and hold the
reset button for 15 seconds until the yellow
light turns on. This indicates that the button
has been held long enough.
2. Release the reset button.The yellow light will
turn off and the burner will start up again.
3. At burner start up, click the reset button while
the igniter is still on. This will transition the
control to a dedicated Pump Prime mode,
during which the motor, igniter and valve are
powered for four minutes.The yellow light will
be on.
4. If the prime is not established during the four
minute pump prime mode, repeat step 3 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.

20
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 FUR-
NACE IF YOU SMELL GAS.
SAFETY INFORMATION
FOR YOUR SAFETY READ BEFORE LIGHT-
ING.
a. The first lighting of the furnace after any
home setup must be performed by a quali-
fied 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 sup-
plier 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 observa-
tion 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. Im-
mediately 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