Nordyne M1MB 077, M1MB 070, M1MC 077, M1MB 090, M1MC 090 Installation Instructions Manual
...
INSTALLATION INSTRUCTIONS
Downfl ow, Direct Vent (Sealed Combustion)
Forced Air Gas & Oil Furnaces
Series M1B, M1M & M5S
For installation in:
• Manufactured Homes
• Recreational Vehicles, Park Models,
& Manufactured Buildings
• Modular Homes / Buildings
WARNING:
FIRE OR EXPLOSION HAZARD
• Failure to follow safety warnings exactly
could result in serious injury or property
damage.
• Installation and service must be performed
by a qualifi ed installer, service agency or the
gas supplier.
• Do not store or use gasoline or other
fl ammable vapors and liquids in the vicinity
of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call
the fi re department.
AVERTISSEMENT
RISQUE D’INCENDIE OU D’ EXPLOSION
• Le non-respect des avertissements de
sécurité pourrait entraîner des blessures
graves, la mort ou des dommages matériels.
• L’installation et l’entretien doivent être
effectués par un installateur qualifi é, un
organisme de service ou le fournisseur de
gazstaller, service agency or the gas supplier.
• Ne pas entreposer ni utiliser de l’essence ni
d’autres vapeurs ou liquides infl ammables
dans le voisinage de cet appareil, ni de tout
autre appareil.
QUE FAIRE S’IL Y A UNE ODEUR DE GAZ
• Ne pas tenter d’allumer aucun appareil.
• Ne toucher à aucun interrupteur électrique;
n’utiliser aucun téléphone dans le bâtiment.
• Évacuer l’immeuble immédiatement.
• Appeler immédiatement le fournisseur de
gaz en employant le téléphone d’un voisin.
Respecter à la lettre les instructions du
fournisseur de gaz.
• Si personne ne répond, appeler le service des
incendies.
DO NOT DESTROY THIS MANUAL. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
TABLE OF CONTENTS
IMPORTANT SAFETY INFORMATION .......................3
REQUIREMENTS & CODES .......................................3
GENERAL INFORMATION ..........................................5
Manufacturer Warranty .............................................5
Minimum Clearances ............................................... 5
Applications .............................................................5
Unit Location ............................................................5
CIRCULATING AIR REQUIREMENTS ........................7
Return Air Connections ...........................................7
Supply Air Connections ............................................7
FURNACE INSTALLATION .........................................8
General Information ..................................................8
Locating & Cutting Duct Openings ..........................8
Standard Duct Connector Installation ....................... 8
Alternate Attachment Method ................................. 9
Round Duct Connector Installation ......................... 10
Installing the Furnace ............................................. 10
ROOF JACK INSTALLATION .................................... 11
Roof Jack Selection ................................................ 11
Application Notes ....................................................11
Locating & Cutting Roof Openings ......................... 12
Installing the Roof Jack ........................................... 13
Installation of Transit-Mode Vent System ................ 13
ELECTRICAL INFORMATION ................................... 14
Line Voltage Wiring ................................................. 14
Connecting Power Supply Wires .......................... 14
Low Voltage Wiring ................................................. 15
Connecting Thermostat Wires .............................. 15
Verifying Anticipator Setting ................................. 15
Grounding ...............................................................15
FUEL SUPPLY & PIPING .......................................... 16
Leak Check ............................................................ 17
Oil Tank & Piping Istallation .................................... 17
One-Line System ..................................................18
Two-Line System .................................................. 18
Fuel Line Hook Up ................................................. 18
Fuel Line Bleeding ................................................. 18
Priming Honeywell R7184 ................................... 19
Priming Beckett 7505 .......................................... 19
Fuel Oil Type .......................................................... 19
Conversion to Propane Gas .................................. 19
Atmospheric & Direct Ignition .............................. 19
High Altitude Conversion ....................................... 19
Flue Gas Sampling ................................................ 20
STARTUP & ADJUSTMENTS ...................................21
Operating Instructions - Direct Ignition (M1M) ....... 22
How to Shut Off Gas - Direct Ignition ................... 22
Operating Instructions - Oil Gun (M5S) .................. 22
Operating Instructions - Gas Gun (M1B) ................ 22
How to Shut Off Gas - Gas Gun ........................... 23
Verifying & Adjusting Temperature Rise ................. 23
Burner Adjustments ................................................ 23
Gas Pressure ....................................................... 23
Combustion Air ....................................................... 23
Gas Gun ............................................................... 24
Oil Gun .................................................................24
Electrode Setting - Oil Gun ..................................... 24
Switching Honeywell (R7184) Ignition from
Interrupted to Intermittent ....................................... 24
OPERATING SEQUENCE .........................................24
Direct Ignition Furnaces (M1M Models).................. 24
Oil Gun Furnaces (M5S Models) ............................ 24
Gas Gun Furnaces (M1B Models) .......................... 24
FURNACE CONTROLS & FUNCTIONS ................... 25
Furnace On / Off Switch ......................................... 25
Limit Control ........................................................... 25
Gas Valve................................................................25
Oil Burner Primary Control ..................................... 25
Summer Cooling - B,C,D Series ............................. 25
TROUBLESHOOTING ...............................................26
Direct Ignition & Gas Gun (M1M & M1B Models) ... 26
Oil Gun Models (M5S Models) ...............................27
OPTIONAL ACCESSORIES ...................................... 28
Optional Add-On Air Conditioning .........................29
MAINTENANCE ......................................................... 29
Homeowner Information ........................................ 29
Installer Information Information ............................ 29
Additional Oil Furnace Maintenance ................... 29
FIGURE & TABLES .................................................... 30
Table 10 - M1 / M5 Furnace Specifi cations ..........30
Table 11 - Orifi ce Sizes - High Altitude. ................ 31
Table 12 - A/C Blower Speed Selection ................ 31
Gas Information ...................................................... 32
Table 13 - Gas Flow Rates ................................... 32
Table 14 - Gas Pipe Capacities ............................ 32
Electrical Information .............................................. 33
Fig. 38 - Gas Only (M1M Models) ........................ 33
Fig. 39 - Gas & Oil (M1B & M5S) ......................... 34
INSTALLATION CHECKLIST .................................... 36
2
IMPORTANT SAFETY INFORMATION
Safety markings are used frequently throughout this
manual to designate a degree or level of seriousness and
should not be ignored. WARNING indicates a potentially
hazardous situation that if not avoided, could result in
personal injury or death. CAUTION indicates a potentially
hazardous situation that if not avoided, may result in minor
or moderate injury or property damage.
WARNING:
Do not use this appliance if any part has been
submerged under water. Immediately call a
qualifi ed service technician to inspect the
appliance and to replace any part of the control
system and any gas control that has been
submerged underwater.
WARNING:
The safety information listed below must be
followed during the installation, service, and
operation of this furnace. Failure to follow safety
recommendations could result in possible
damage to the equipment, serious personal
injury or death.
WARNING:
FIRE AND EXPLOSION HAZARD
Can result in serious injury or death.
Do not store or use gasoline or other fl ammable
vapors and liquids in the vicinity of this or any
other appliance. Storage of or use of gasoline
or other fl ammable vapors or liquids in the
vicinity of this or any appliance can result in
serious injury or death.
AVERTISSEMENT:
RISQUE D’INCENDIE ET D’EXPLOSION
Risque de blessures graves ou de mort.
Ne pas entreposer ni utiliser de l’essence ni
d’autres vapeurs ou liquides infl ammables
dans le voisinage de cet appareil, ni de tout
autre appareil. Le fait d’entreposer ou d’utiliser
de l’essence ou d’autres liquides ou vapeurs
infl ammables à proximité de cet appareil ou de
tout autre appareil peut causer des blessures
graves ou la mort.
REQUIREMENTS & CODES
• This furnace must be installed in accordance with
these instructions, all applicable local building codes
and the current revision of the National Fuel Gas Code
(NFPA54/ANSI Z223.1) or the Natural Gas and Propane
Installation Code, CAN/CGA B149.1.
• CE générateur d’air chaud doit être installé conformément aux instructions du fabricant et aux codes locaux.
En l’absence de code local, respecter la norme ANSI
Z223.,1, institulé National Fuel Gas Code ou les codes
d’installation CAN/GCA-B149.
• Use only with type of gas approved for this furnace.
Refer to the furnace rating plate.
• Install this furnace in accordance to the minimum
clearances to combustible materials listed in Table 1
(page 6).
• Provide adequate combustion and ventilation air to the
furnace space as specifi ed on page 23. Do not block
or obstruct air openings on the furnace, air openings
to the area where the furnace is installed, or the space
around the furnace.
• Combustion products must be discharged outdoors.
Connect this furnace to an approved vent system, as
specifi ed on pages 11 - 14.
• Never test for gas leaks with an open fl ame. Use a
commercially available soap solution to check all
connections (page 17).
• This furnace is designed to operate with a maximum
external pressure rise of 0.5 inches of water column.
Consult Table 12 (page 31) and the rating plate for the
proper circulating air fl ow and temperature rise.
NOTE: It is important that the duct system be designed
to handle the desired fl ow rate and external pressure
rise. An improperly designed duct system can result in
nuisance shutdowns, and comfort or noise issues.
• When supply ducts carry air circulated by the furnace
to areas outside the space containing the furnace, the
return air shall also be handled by duct(s) sealed to
the furnace casing and terminating outside the space
containing the furnace. See pages 8 - 10.
• This furnace may not be used for temporary heating of
buildings or structures under construction.
• The Commonwealth of Massachusetts requires
compliance with regulation 248 CMR 4.00 and 5.00 for
installation of through – the – wall vented gas appliances
as follows:
3
1. For direct-vent appliances, mechanical-vent heating
appliances or domestic hot water equipment, where
the bottom of the vent terminal and the air intake is
installed below four feet above grade the following
requirements must be satisfi ed:
a.) A carbon monoxide (CO) detector and alarm
shall be placed on each fl oor level where there are
bedrooms. The detector shall comply with NFPA 720
(2005 Edition) and be mounted in the living area
outside the bedroom(s).
b.) A (CO) detector shall be located in the room that
houses the appliance or equipment and shall:
• Be powered by the same electrical circuit as the
appliance or equipment. Only one service switch
shall power the appliance and the (CO) detector;
• Have battery back-up power;
• Meet ANSI/UL 2034 Standards and comply with
NFPA 720 (2005 Edition); and Approved and listed
by a Nationally Recognized Testing Laboratory as
recognized under 527 CMR.
c.) A Product-approved vent terminal must be used,
and if applicable, a product-approved air intake must
be used. Installation shall be in strict compliance
with the manufacturer’s instructions. A copy of the
installation instructions shall remain with the appliance
or equipment at the completion of the installation.
d.) A metal or plastic identifi cation plate shall be
mounted at the exterior of the building, 4 feet directly
above the location of vent terminal. The plate shall
be of suffi cient size, easily read from a distance of
eight feet away, and read “Gas Vent Directly Below”.
2. For direct-vent appliances, mechanical vent heating
appliances or domestic hot water equipment where
the bottom of the vent terminal and the air intake is
installed above four feet above grade the following
requirements must be satisfi ed:
a.) A (CO) detector and alarm shall be placed on each
fl oor level where there are bedrooms. The detector
shall comply with NFPA 720 (2005 Edition) and be
mounted in the living area outside the bedroom(s).
b.) The (CO) detector shall:
• Be located in the room that houses the appliance
or equipment;
• Be hard-wired, battery powered or both.
• Shall comply with NFPA 720 (2005 Edition).
c.) A product-approved vent terminal must be used,
and if applicable, a product-approved air intake must
be used. Installation shall be in strict compliance
with the manufacturer’s instructions. A copy of the
installation instructions shall remain with the appliance
or equipment at the completion of the installation.
Additional information listed below is for reference purposes only and
does not necessarily have jurisdiction over local or state codes. Always
consult with local authorities before installing any gas appliance.
Combustion & Ventilation Air
• US: National Fuel Gas Code (NFGC), Air for Combustion and
Ventilation
• CANADA: Natural Gas and Propane Installation Codes
(NSCNGPIC), Venting Systems and Air Supply for Appliances
Duct Systems
• US and CANADA: Air Conditioning Contractors Association
(ACCA) Manual D, Sheet Metal and Air Conditioning Contractors
National Association (SMACNA), or American Society of Heating,
Refrigeration, and Air Conditioning Engineers (ASHRAE)
Fundamentals Handbook
Electrical Connections
• US: National Electrical Code (NEC) ANSI/NFPA 70
• CANADA: Canadian Electrical Code CSA C22.1
Gas Piping & Gas Pipe Pressure Testing
• US: NFGC and National Plumbing Codes
• CANADA: NSCNGPIC
General Installation
• US: Current edition of the NFGC and the NFPA 90B. For copies,
contact the National Fire Protection Association Inc., Batterymarch
Park, Quincy, MA 02269; or American Gas Association, 400 N.
Capitol, N.W., Washington DC 20001 or www.NFPA.org
• CANADA: NSCNGPIC. For a copy, contact Standard Sales, CSA
International, 178 Rexdale Boulevard, Etobicoke (Toronto), Ontario,
M9W 1R3 Canada
Safety
• US: (NFGC) NFPA 54–1999/ANSI Z223.1 and the Installation
Standards, Warm Air Heating and Air Conditioning Systems ANSI/
NFPA 90B.
• Federal Manufactured Home Constructions & Safety Standard
(H.U.D. Title 24, Part 3280.707[a][2])
• The Standard for Manufactured Home Installations (Manufactured
Home Sites, Communities, and Set-Ups) ANSI A225.1 and/or CAN/
CSA-2240 MH Series).
• American National Standard (ANSI-119.2/NFPA-501C) for all
recreational vehicle installations.
• CANADA: CAN/CGA-B149.1 and .2–M00 National Standard of
Canada. (NSCNGPIC)
4
GENERAL INFORMATION
CAUTION:
• Do Not alter or modify this furnace or any of
its components.
• Never attempt to repair damaged or inoperable
components. This may cause unsafe operation,
explosion, fi re and/or asphyxiation.
• If furnace malfunctions or does not operate
properly, contact a qualifi ed service agency or
gas utility for assistance.
Manufacturer Warranty - Owner’s
Responsibilities
A warranty certifi cate with full details is included with these
instructions. Carefully review these responsibilities with
your manufactured housing dealer, service company or
gas supplier. 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 fi eld converted
when using L.P. gas.
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. Some
specifi c examples of service calls which cannot be included
in warranty payments are:
• Converting the furnace to use another type of gas.
• Repairing duct work in the home found to be faulty.
• Correcting wiring problems in the electrical circuit
supplying the furnace.
• Resetting circuit breakers, blown fuses or other switches.
• Correcting problems due to improper gas supply
pressure to the furnace.
• Providing instructional training on how to light and
operate the furnace.
• Furnace problems caused by installation of an air
conditioner, heat pump or other air comfort devices.
• Adding a Roof Jack extension because of unusual wind
and/or snow conditions.
• Revising installation of the furnace fl ue assembly (Roof
Jack).
• Adjusting or calibrating of thermostat.
• Any construction debris which falls into fl ue system.
Minimum Clearances
This heating appliance must be installed with clearances
not less than the minimums listed in Table 1. This furnace
must be installed with ample clearance for easy access to
the air fi lter, blower assembly, burner assembly, controls,
and vent connections. See Figures 1 - 3 (page 6).
• The dimensions of the room or alcove must be able to
accommodate the overall size of the furnace and the
installation clearances listed in Table 1 and in Figure 4
(page 6).
• Alcove installations: minimum 18” clearance at front
of furnace shall be provided for future servicing. A
removable access panel should be installed between
top of the furnace door frame and the ceiling.
• Closet installations must use a louvered door having
a minimum free area of 235 in2 when located 6” from
furnace or 390 in2 for 5 ton ready M1/M5 furnaces. For
special clearance between 1” - 6”, requirements are a
louvered door with a minimum of 250 in2 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 Circulating Air Requirements
(page 7).
• The furnace must be kept free and clear of insulating
material. Examine the furnace area when the furnace is
installed or when insulation is added. Insulating material
may be combustible.
Applications
M1 Series gas and M5 Series oil furnaces are listed direct
vent (sealed combustion), downfl ow 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/M5
series furnaces using air conditioning or conventional
units. This Installation Instruction manual includes
special requirements for incorporation of air conditioning
equipment to the M1/M5 series of furnaces. See Table
12 (page 31).
Multi-speed blower assemblies shown in Table 2 (page 6),
have been certifi ed for fi eld installation in M1/M5 Series
furnaces.
Unit Location
• The furnace shall be appropriately located to the supply
and return air distribution system (page 7). Sides and
back of the furnace may be enclosed by wall framing.
See Minimum Clearances and Figures 1- 3 (page 6).
• The fur nace 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 fl ooring when
using NORDYNE Duct Connectors. See pages 8 - 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
fl oor and protected from physical damage by vehicles.
5
6" (152 mm)
Top Clearance
0" Side
Clearance
to Furnace
Cabinet
Figure 1. Alcove Installation
Removable access
panel should be
installed above
furnace door frame
to access roof jack
18"
(457 mm)
Nearest
Wall or
Partition
ALL MODELS CLOSET ALCOVE
Front 6” 18”
Back 0” 0”
Sides 0” 0”
Roof Jack 0” 0”
To p 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 1. Minimum Clearances
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
6"
(152 mm)
CLOSET DOOR
Figure 2. Closet Installation
Provide min. 250
sq. in. (1613 cm )
open free area in
front or side wall
1"
(25 mm)
2
or
In closet
door
located
at top,
center
or bottom
2
or
in closet
door
a fully
louvered
door may
be used
“A”- 56"
“A” Model
w/o Coil
Cabinet
“B”- 76"
“B” Model
w/Coil
Cabinet
23 3/4"
19 3/4"
Figure 4. Overall Dimensions
Part
No.
903773 10 x 8 1/4 2, 2½ & 3
903413 11 x 8 1/2 2, 2½, 3 & 4
903890 11 x 8 3/4 2, 2½, 3, 4 & 5
Blower / Motor Assembly
Blower Wheel Motor (Hp)
A/C Capacity
(Tons)
Table 2. Blower Assemblies
CLOSET DOOR
Figure 3. Special 1” Clearance
6
CIRCULATING AIR REQUIREMENTS
A Single trunk duct
B
Dual trunk duct
w/crossover connector
C
Transition duct
w/branches
WARNING:
Do not allow combustion products to enter the
circulating air supply. Failure to prevent the
circulation of combustion products into the
living space can create potentially hazardous
conditions including carbon monoxide poison-
ing that could result in personal injury or death.
All return ductwork must be secured to
the furnace with sheet metal screws. For
installations in confi ned spaces, all return
ductwork must be adequately sealed. The joint
between the furnace and the return air plenum
must be air tight.
The surface that the furnace is mounted on must
provide sound physical support of the furnace
with no gaps, cracks or sagging between the
furnace and the fl oor or platform.
Return air and circulating air ductwork must
not be connected to any other heat producing
device such as a fi replace insert, stove, etc. This
may result in fi re, explosion, carbon monoxide
poisoning, personal injury, or property damage.
Return Air Connections
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:
• The return air opening into the closet shall not be less
than specifi ed in the appliance’s listing.
• The cross-sectional area of the return duct system
leading into the closet, when located in the fl oor or
ceiling shall not be less than 235 in2 (or 390 in2 for 5
ton ready M1/M5 Furnaces).
• Noncombustible pans having 1” upturned fl anges are
located beneath openings in a fl oor duct system.
• Wiring materials located in the return duct system shall
conform to Articles 300-22 of the National Electrical
Code (ANSI C1/NFPA-70).
• Gas piping is not run in or through the return duct system.
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.
• Test the negative pressure in the closet with the aircirculating 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.
• Air conditioning systems may require more duct register
and open louver area to obtain necessary airfl ow. Use
NORDYNE’s certiduct program to determine proper
duct sizes for air conditioning.
Supply Air Connections
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 fl oor plan of the
home. The supply air must be delivered to the heated
space by duct(s) secured to the furnace casing,
running full size and without interruption. Three typical
distribution systems are shown in Figure 5
HAZARD OF ASPHYXIATION: Do not cover or
restrict return air opening.
• Means shall be provided that prevent inadvertent closure
of fl at objects placed over the return air opening located
in the fl oor of the closet (versus the vertical front or side
wall).
• The total free area of openings in the fl oor or ceiling
registers serving the return air duct system must be at
least 235 in2. At least one register should be located
where it is not likely to be covered by carpeting, boxes
and other objects.
• Materials located in the return duct system must have a
fl ame spread classifi cation of 200 or less. This includes
a closet door if the furnace is in a closet.
CAUTION:
Figure 5. Typical Supply Duct System
7
FURNACE INSTALLATION
NOTE: These Installation procedures are suggested for
typical furnace installations. Since each installation is
different, the sequence of instructions may differ from
the actual installation. Only qualifi ed HVAC technicians
should install this furnace.
The installer must be familiar with and comply with all
codes and regulations applicable to the installation of
these heating appliances and related equipment. In
the absence of local codes, the installation must be in
accordance with the current provisions of one or more of
the following standards.
• Federal Manufactured Home Constructions & Safety
Standard (H.U.D. Title 24, Part 3280.707[a][2])
• American National Standard (ANSI-119.2/NFPA-501C)
for all recreational vehicle installations.
• American National Standard (ANSI-Z223.1/NFPA-54)
and/or CAN/CSA B149 for all gas-fi red furnace models.
• American National Standard (ANSI-Z95.1/NFPA-31)
and/or CSA B139 for all oil-fi red furnace models.
• American National Standard (ANSI-C1/NFPA-70) and/or
CSA 22.1 Canadian Electric Code Part 1 for all electrical
fi eld wiring.
• Units have been researched under standards UL 307A
& B, UL727-1999, ANSI Z21.47b/CSA 2.3b-2008, and
CSA B140.10.
General Information
• The furnace must be leveled at installation and attached
to a properly installed duct system. Do not use the back
of the furnace for return air. See page 7 for circulating
requirements.
• The furnace must be installed so that all electrical
components are protected from water.
• The dimensions of the room or alcove must be able to
accommodate the overall size of the furnace and the
installation clearances listed in Table 1 and Figure 3
(page 6)
• The furnace must be installed upstream from a
refrigeration system.
• The M1 Series gas and M5 Series oil furnace is
certifi ed for use on wood fl ooring or supports, but must
be installed on top of a duct connector. This factory
supplied accessory must be installed in the fl oor cavity
and attached to the supply air duct before the furnace
is installed.
Locating & Cutting Duct Openings
Floor cut-outs and fuel line holes must be carefully located
to avoid misalignment of the furnace, and vent piping. To
locate standard ducts see Figure 6 (page 9). For round
ducts, see Figure 7.
1. Measure 10” from the rear wall or alcove and mark the
centerline of the cut-out on the fl oor.
2. Using the centerline as a starting point, draw the rest
of the duct cut-out to the dimensions shown in Figures
6 or 7.
3. Cut out the fl oor opening 1/16” larger than the actual
cutout drawn. This will allow some clearance when
installing the duct connector.
4. Measure from the top of the fl oor down to the top of
the supply air duct to obtain the depth of the fl oor
cavity. NOTE: The depth of the fl oor cavity shown as
“X” in Figure 9 (page 9) will determine the correct duct
connector.
5. Determine which duct connector to use from Table 3
(page 9).
6. Measure and drill gas hole and cut out for cooling coil
(if applicable). See Figures 6 or 7.
Standard Duct Connector Installation
The standard duct connector is designed for use on ducts
12” in width. However ducts narrower than 12” may not
allow suffi cient clearances for this type of installation. For
an alternate installation method, see page 9.
1. Center the duct connector in the fl oor opening with
bottom tabs resting on top of the supply air duct.
2. Mark the cut-out area on the supply air duct by tracing
around the connector tabs (Figure 8, page 9) of the
duct connector.
3. Remove the duct connector and cut out the marked
area of the supply air duct 1/4” larger the actual cutout
drawn.
4. Install the duct connector back in the fl oor opening with
the bottom tabs extending into the supply air duct.
5. Install the mounting plate (Figure 8) under the back
side of the duct connector. Align the screw holes in
both components.
6. Secure the duct connector and the mounting plate to
the wood fl oor with appropriate size screws.
7. Bend the connector tabs on the bottom of the duct
connector upwards and as tight as possible against
the supply air duct.
8. Bend both tabs up 90° on the mounting plate. See
Figure 10 (page 10)
9. Seal all connections with industrial grade sealing tape
or liquid sealant.
NOTE: Requirements for sealing ductwork vary
from region to region. Consult with local codes for
requirements specifi c to your area.
8
20"
14 1/2"
C
L
REAR WALL OF CLOSET OR ALCOVE
2 3/4"
2 1/4"
10"
FLOOR CUT-OUT
24"
21 3/4"
23 1/4"
C
L
1 3/4"
3/4"
FOR STANDARD
DUCT CONNECTORS
14 1/2"
FURNACE OUTLINE
C
C
L
L
CUT-OUT FOR
OPTIONAL
COOLING COIL
ALT FUEL-LINE
ENTRY 1 1/4" Dia.
1 7/8"
2 7/8"
1 3/4"
C
L
FURNACE
OUTER
DOOR
C
L
FUEL
LINE
3/4"
Figure 6. Cut-Out Dimensions for
Standard Duct Connectors
20"
C
L
10"
REAR WALL OF CLOSET OR ALCOVE
“X”
FLOOR OPENING
SUPPLY AIR DUCT
FLOOR
CAVITY
Figure 9. Floor Cavity
C
L
2"
If Floor Cavity
“X” is:
Standard Duct Round Duct
7/8” / (22) 901987A 904008
2” / (51) 901988A 904009
4-1/4” / (108) 901989A 904010
6-1/4” / (159) 901990A 904011
8-1/4” / (210) 901991A 904012
10-1/4” / (260) 901992A 904013
12-1/4” / (311) 901993A 904014
NOTE: Dimensions shown as Inches / (Millimeter)
Duct Connector
Type & Part Number
Table 3. Duct Connector Sizes
FLOOR
CUT-OUT FOR
24"
C
L
23 1/4"
21 3/4"
1 3/4"
3/4"
1 7/8"
ROUND DUCT
(14 1/4” DIAMETER)
FURNACE OUTLINE
CUT-OUT FOR
C
C
L
L
COOLING COIL
ENTRY 1 1/4" Dia.
2 7/8"
OPTIONAL
ALT FUEL-LINE
C
L
C
L
FURNACE
OUTER
DOOR
Figure 7. Cut-Out Dimensions for
Round Duct Connectors
Hole for
Gas Line
Duct
Connector
Wood Floor
Connector
Tabs
Supply
Air Duct
Mounting Plate
10"
1 3/4"
3/4"
FUEL
LINE
Bend tabs
C
L
2"
up 90°
Alternate Attachment Method
The standard duct connector is designed for use on ducts
12” in width. However if there is insuffi cient clearance to
bend the duct connector tabs, this alternate attachment
method may be used.
1. Score and cut the top of the supply air duct as indicated
in Option 1 or Option 2 (Figure 11, page 10). With Option
1 choice, cut out the metal from the shaded area.
2. Fold the two fl aps (Options 1 or 2) up to form the opening
for the duct connector.
3. Install the duct connector with the bottom tabs extending
into the supply air duct.
4. Bend the tabs on the bottom of the duct connector
upwards and as tight as possible against the supply
air duct (Figure 12, page 10).
5. Form the fl aps (Options 1 or 2) up against the duct
connector as tight as possible.
6. Secure the duct connector fl aps to the supply air duct
with staples (3 minimum) or if a 2x block/joist is not
provided, use sheet metal screws (2 minimum).
NOTE: The duct connector tabs may be attached to
the air duct with sheet metal screws or other suitable
fasteners as long as the duct connector and the air duct
are securely attached.
7. Seal all connections with industrial grade sealing tape
or liquid sealant.
Figure 8. Standard Duct Connector Installed
NOTE: Requirements for sealing ductwork vary
from region to region. Consult with local codes for
requirements specifi c to your area.
9
DUCT CONNECTOR
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
BEND TABS TIGHTLY
AGAINST SUPPLY AIR DUCT
Figure 10. Duct Connector Tabs
OPTION 1 OPTION 2
Remove
this
Cut Here
Cut Here
Cut Here
Fold Flap Here
Cut Here
Remove
this
Flap
Flap
Cut Here
Cut Here
Supply
Air Duct
Fold Flap Here
Fold Flap Here
Cut Here
Cut Here
Cut Here
SUPPLY
AIR DUCT
Fold Flap Here
Round Duct Connector Installation
1. Apply a bead of caulking, mastic, or other approved
sealant around bottom side of connector.
2. Install and center the duct connector in the fl oor opening.
3. Install the mounting plate under the back side of the
duct connector. See Figure 13. NOTE: Align the screw
holes in both components.
4. Secure the duct connector and the mounting plate to
the wood fl oor with appropriate size screws.
5. Connect the round supply duct to the underside of the
duct connector and secure them with fi eld supplied
sheet metal screws.
6. Seal all connections with industrial grade sealing tape
or liquid sealant.
NOTE: Requirements for sealing ductwork vary
from region to region. Consult with local codes for
requirements specifi c to your area.
Installing the Furnace
Sides and back of the furnace may be enclosed by wall
framing such as in a closet or alcove. The dimensions of the
room or alcove must be able to accommodate the overall
size of the furnace and the installation clearances outlined
on page 5 and Figures 1 - 4 (page 6). The furnace shall
be appropriately connected to the supply and return air
distribution system as shown in Figures 14 & 15 (page 11).
Figure 11. Narrow Air Duct Openings
Duct connector tabs
Narrow
Duct
Duct
Flap
Sheet metal
screws
Staples or sheet metal screws
Duct
Connector
Narrow
Duct
Figure 12. Narrow Ducts
SCREWS
DUCT
CONNECTOR
14” SUPPLY CONNECTION
Figure 13. Round Duct Connector Installed
Narrow
Duct
MOUNTING
PLATE
FUEL LINE
HOLES
1. Remove furnace outer door(s) and bottom fuel line
knockout.
2. Place furnace onto duct connector and center with fl oor
opening.
3. Slide onto mounting plate. (Bottom rear slots on furnace
should engage with mounting plate tabs.)
4. Secure front with one (1) fastener at each corner
(Figures 14 or 15).
NOTE: Additional fasteners may be used at rear, sides
or through door frame, as desired, to secure furnace to
closet or alcove framing.
Figure 14. “A” & “B” Cabinet Furnaces
10
SLIDE FURNACE
BACK AGAINST
MTG. PLATE
MTG. PLATE TABS
SECURE FURNACE
WITH 2 FASTENERS
AT FRONT CORNER HOLES
FUEL LINE HOLES
SUPPLY
AIR DUCT
Figure 15. “A” Cabinet Furnace on Coil Cabinet
ROOF JACK INSTALLATION
Required ceiling and roof cut-out openings must be
carefully located to avoid misalignment of the furnace
and Roof Jack. NOTE: Install only Roof Jack Assemblies
listed in Table 4 on this heating appliance.
Roof Jack Selection
1. Determine depth of ceiling cavity from center of roof
opening to center of ceiling opening (Dimension [A] in
Figure 16).
2. Determine ceiling height and subtract height of furnace
(Dimension [B] in Figure 16).
3. Add dimensions [A] + [B] (and [X] from Table 5 & Figure
16, page 12 if slant deck fl ashing is used). The total
length of [A] + [B] + [X] must be within the minimum
and maximum range of the Roof Jack listed in Table 4.
ROOF JACK
SLANT DECK
PITCHED
ROOF
CEILING
CAVITY
CEILING
“A”
“B”
Furnace
FLASHING
"X" (SEE TABLE 5)
Roof
Opening
Flue Pipe
Combustion Air Pipe
56" or 76"
Figure 16. Ceiling Cavity Depth
MODEL NUMBER
(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”
SSAW
F = FLAT FLASHING
S = SLANT FLASHING
AW= ALL WEATHER
TYPE:
BLANK = NON-TRANSIT
T= TRANSIT MODE
APPROX. LENGTH
BELOW FLASHING
47 - 2
T
27
MIN. ADJ.
LENGTH
MAX. ADJ.
LENGTH
FLUE STEEL TYPE
A= ALUMINIZED
S=STAINLESS
FLASHING
PITCH/12" RISE
0=FLAT
2=2.5/12
4=4/12
Application Notes
• FAW, FAWT, SAW and SAWT Series Roof Jacks with a
5” diameter inner vent pipe may be used with all models
of M1 Series gas and M5 Series oil furnaces.
F = Flat Flashing: fl exes from 0/12 to 1/12 roof slope.
See Figure 17 (page 12).
S = Slant Flashing: 2.5/12 Slope fl exes from 1/12 to
4/12 roof slope, 4/12 fl exes from 3/12 to 5/12.
See Figure 18.
• Stainless steel roof jacks are available.
• M1/M5 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.
• This furnace must never be connected to a chimney
fl ue servicing a fi replace or other appliance designed
to burn solid fuel.
NOTE: 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). Extensions are optional
accessories and may be purchased through your
NORDYNE distributor.
See Table 5
Table 4. Roof Jack Assemblies
Figure 17. Example of Flat Jack with Flashing
11
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