Nordyne M1M, M1G, M1B, M1S User Manual 2
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:
!
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
2
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
3
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
4
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
6"
(152 mm)
Nearest
Wall or
Partition
2
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
1"
2
or
in closet
door
a fully
louvered
door may
be used
CLOSET DOOR
5
A Single trunk duct
B
Dual trunk duct
w/crossover connector
C
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
6
!
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
T
TYPE:
BLANK=NON-TRANSIT
T= TRANSIT MODE
27
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
1
/12 SLANT
2
LASHING
5/12 ROOF SLOPE
1
/12
2
2
SLANT DECK
Table 5. Roof Jack Assemblies
Figure 8. Example of 2½/12 Slant Jack
with Flashing
7
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
8
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)
x
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.
C
Top View
of
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.
X
SEE
TABLE 7
9
LT. FUEL
INE HOLES
C
L
SIDE WALL
FUEL LINE
HOLE
CEILING AND ROOF
OPENINGS
C
L
REAR W
FLOOR
OPENING
ALL
10"
C
L
13-1/2"
23 -1/4"
C
L
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"
C
L
REAR WALL OF CLOSET OR ALCOVE
FLOOR CUT-OUT
C
L
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
C
L
12-7/8"
14-3/4"
15-1/2"
2-1/4"
C
L
10"
2-3/4"
13-1/2"
FURNACE OUTLINE
FUEL-LINE
3/4"
1-3/4"
FURNACE
OUTER DOOR
2"
10
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
M
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
11
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.
12
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