Downflow, Direct Vent (Sealed Combustion)
Forced Air Gas & Oil Furnaces
Installation Instructions
For installation in:
• Manufactured Homes
• Recreational Vehicles, Park Models, &
Manufactured Buildings
Series M1B, M1G, M1M & M5S
• Modular Homes/Buildings
ATTENTION INSTALLERS:
It is your responsibility to know this product
better than your customer. This includes
being able to install the product according
tostrictsafetyguidelinesandinstructingthe
customeronhowtooperateandmaintainthe
equipment for the life of the product. Safety
should always be the deciding factor when
installing this product and using common
sense plays an important role as well. Pay
attentiontoallsafetywarningsandanyother
special notes highlighted in the manual.
Improperinstallationofthefurnaceorfailure
to follow safety warnings could result in
serious injury, death, or property damage.
These instructions are primarily intended
to assist qualified individuals experienced
in the proper installation of this appliance.
Some local codes require licensed
installation/service personnel for this type
of equipment. Please read all instructions
carefully before starting the installation.
Return these instructions to the customer’s
package for future reference.
!
WARNING:
WHAT TO DO IFYOU SMELL GAS
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 qualified
installer, service agency or the
gas supplier.
• Do not store or use gasoline
or other flammable vapors and
liquids in the vicinity of this or
any other appliance.
• Do not try to light any appliance.
• Donottouchanyelectricalswitch;
do not use any phone in your
building.
• Leave the building immediately.
• Immediatelycallyourgassupplier
from a neighbors phone. Follow
the gas suppliers instructions.
• If you cannot reach your gas
supplier, call the fire department
DO NOT DESTROY. PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
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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 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.
WARNING:
Notice to Installer
The safety information listed
belowmustbefollowedduringthe
installation,service,andoperation
of this furnace. Failure to follow
safety recommendations could
result in possible damage to the
equipment,seriouspersonalinjury
Installer is advised to carefully follow all
instructionsandwarningsinthismanualtoinsure
maximum performance, safety, and operating
efficiency of these appliances. Improper
installation may create hazardous conditions,
and will void the appliance warranty.
WARNING:
or death
.
• Use only with type of gas approved for this
furnace. Refer to the furnace rating plate.
• Install this furnace in accordance to the
minimumclearancestocombustiblematerials
listed in Table 1 (page 5).
PROPOSITION 65 WARNING:
Thisproductcontainschemicals
known to the state of California
tocausecancer,birthdefectsor
other reproductive harm.
• Provideadequatecombustionairtothefurnace
space as specified on page 23.
• Combustion products must be discharged
outdoors.Connectthisfurnacetoanapproved
vent system, as specified on pages 13 - 14.
• Never test for gas leaks with an open flame.
Use a commercially available soap solution to
check all connections (page 18).
• This furnace is designed to operate with a
maximum external pressure rise of 0.5 inches
of water column. Consult Table 8 (page 38),
and the rating plate for the proper circulating
air flow and temperature rise.
REQUIREMENTS AND CODES
Thisfurnacemustbeinstalledinaccordancewith
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.
NOTE: It is important that the duct system be
designed to handle the desired flow rate and
externalpressurerise.Animproperlydesigned
ductsystemcanresultinnuisanceshutdowns,
and comfort or noise issues.
The Commonwealth of Massachusetts requires
compliance with regulation 248 CMR 4.00 and
5.00forinstallationofthrough–the–wallvented
gas appliances as follows:
• This furnace may not be used for temporary
heating of buildings or structures under
construction.
• When supply ducts carry air circulated by the
furnace to areas outside the space containing
thefurnace,thereturnairshallalsobehandled
by duct(s) sealed to the furnace casing and
terminating outside the space containing the
furnace. See page 14.
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 satisfied:
3
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a.) A carbon monoxide (CO) detector and
alarm shall be placed on each floor
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:
copy of the installation instructions shall
remain with the appliance or equipment
at the completion of the installation.
The 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.
• 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.
Combustion and Ventilation Air
• US: National Fuel Gas Code (NFGC), Air for
Combustion and Ventilation
• CANADA: Natural Gas and Propane Instal-
lation Codes (NSCNGPIC), Venting Systems
and Air Supply for Appliances
Duct Systems
• USandCANADA:AirConditioningContractors
Association (ACCA) Manual D, Sheet Metal
and Air Conditioning Contractors National
Association (SMACNA), or American Society
ofHeating,Refrigeration,andAirConditioning
Engineers (ASHRAE) Fundamentals Hand-
book
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
Electrical Connections
remain with the appliance or equipment • US: National Electrical Code (NEC) ANSI/
at the completion of the installation. NFPA 70
d.) Ametalorplasticidentificationplateshall • CANADA: Canadian Electrical Code CSA
bemountedattheexteriorofthebuilding,
4 feet directly above the location of vent
terminal. The plate shall be of sufficient
size, easily read from a distance of eight
feet away, and read “Gas Vent Directly
Below”.
C22.1
Gas Piping and Gas Pipe Pressure Testing
• US: NFGC and National Plumbing Codes
• CANADA: NSCNGPIC
General Installation
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 satisfied:
• US: Current edition of the NFGC and the
NFPA 90B. For copies, contact the National
FireProtectionAssociationInc.,Batterymarch
Park, Quincy, MA 02269; or American Gas
Association,400N.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
a.) A (CO) detector and alarm shall be
placed on each floor level where there
arebedrooms.Thedetectorshallcomply
with NFPA 720 (2005 Edition) and be
mounted in the living area outside the
bedroom(s).
Safety
b.) The (CO) detector shall:
• US:(NFGC)NFPA54–1999/ANSIZ223.1and
the Installation Standards, Warm Air Heating
andAirConditioningSystemsANSI/NFPA90B.
• Be located in the room that houses
the appliance or equipment;
• Behard-wired,batterypoweredorboth.
• Shall comply with NFPA 720 (2005
Edition).
• 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,andSet-Ups)ANSIA225.1and/
or CAN/CSA-2240 MH Series).
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
4
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• 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)
• Adding a Roof Jack extension because of
unusual wind and/or snow conditions.
• Revising installation of the furnace flue
assembly (Roof Jack).
• Adjusting or calibrating of thermostat.
• Any construction debris which falls into flue
system.
GENERAL INFORMATION
Manufacturer Warranty - Owner’s
Responsibilities
Minimum Clearances
It is the sole responsibility of the homeowner to This heating appliance must be installed with
make certain the gas furnace has been correctly
clearances not less than the minimums listed
set up and converted to the proper fuel (L.P.gas in Table 1. This furnace must be installed with
or Natural gas) and adjusted to operate properly. ample clearance for easy access to the air filter,
AllgasfurnacesaremanufacturedforNaturalgas
blowerassembly,burnerassembly,controls,and
andmustbe field converted whenusingL.P.gas. 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
CAUTION:
furnace and the installation clearances listed
in Table 1 and in Figure 4 (page 6).
• Alcove installations: minimum 18” clearance
• DoNotalterormodifythisfurnace
or any of its components.
• Never attempt to repair damaged
at front of furnace shall be provided for future
servicing. A removable access panel should
or inoperable components. This
may cause unsafe operation, ex-
plosion,fire and/or asphyxiation.
• If furnace malfunctions or does
not operate properly, contact a
qualified service agency or gas
utility for assistance.
be installed between top of the furnace door
frame and the ceiling.
• Closet installations must use a louvered door
havingaminimumfreeareaof235sq.in.when
located 6” from furnace or 390 sq. in. for 5 ton
ready M1/M5 furnaces. For special clearance
between1”and6”,requirementsarealouvered
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
Circulating Air Requirements (page 7).
A warranty certificate with full details is included
with these instructions. However, NORDYNE
will not be responsible for any costs found
necessary to correct problems due to improper
setup,improperinstallation,furnaceadjustments,
improper operating procedure on the part of the
user, etc. Carefully review these responsibilities
with your manufactured housing dealer, service
companyorgassupplier.Somespecificexamples
of service calls which cannot be included in
warranty payments are:
ALL MODELS
Front
CLOSET ALCOVE
6”
0”
0”
0”
18”
0”
0”
Back
Sides
Roof Jack
0”
Top
6”
0”
6”
0”
Top and Sides of Duct
• 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.
• Resettingcircuitbreakers,blownfusesorother
switches.
Bottom of Duct
B Cabinet
0”
0”
0”
0”
A Cabinet
(w/ coil box)
A Cabinet
(w/o coil box)
1/4”
1/4”
• Correcting problems due to improper gas
supply pressure to the furnace.
• Providing instructional training on how to light
and operate the furnace.
Table 1. Minimum Clearances
• Furnaceproblemscausedbyinstallationofan
air conditioner, heat pump or other air comfort
devices.
5
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Applications
M1 Series gas and M5 Series 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.
6" (152 mm)
Top Clearance
Removable access
panel should be
0" Side
installed above
Clearance
to Furnace
Cabinet
furnace door frame
to access roof jack
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
incorporationofairconditioningequipmenttothe
M1/M5seriesoffurnaces.SeeTabel12(page32).
Nearest
Wall or
Partition
Figure 1. Alcove Installation
Multi-speed blower assemblies shown in Table
2, have been certified for field installation in M1/
M5 Series furnaces.
Provide min. 235
sq. in. (1516 cm2)
open free area in
front or side wall
6" (152 mm)
Top Clearance
or
Unit Location
In closet
door
• The furnace shall be appropriately located to
the supply and return air distribution system
(See Page 7). Sides and back of the furnace
maybeenclosedbywallframing.SeeMinimum
Clearances (page 2) and Figures 1- 3.
• The furnace installation is only intended for
freeairreturnthroughthefurnacedoorlouvers.
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
flooring when using NORDYNE Duct
Connectors. See pages 9 & 10.
• When installed in a residential garage, the
furnacemustbepositionedsotheburnersand
the source of the ignition are located no less
than 18 inches above the floor and protected
from physical damage by vehicles.
located
at top,
center
or bottom
0" Side
Clearance
to Furnace
Cabinet
CLOSET DOOR
Figure 2. Closet Installation
Provide min. 250
sq. in. (1613 cm 2)
6" (152 mm)
Top Clearance
open free area in
front or side wall
or
in closet
door
a fully
louvered
door may
be used
0" Side
Clearance
to Furnace
Cabinet
CLOSET DOOR
“A”- 56"
“A” Model
w/o Coil
Cabinet
Figure 3. Special 1” Clearance
“B”- 76"
“B” Model
w/Coil
Cabinet
Blower / Motor
Assembly
Part
No.
A/C Capacity
(Tons)
Blower Motor
Wheel
(Hp)
903773
903413
903890
10 x 8
11 x 8
11 x 8
1/4
1/2
3/4
2, 2½ & 3
2, 2½, 3 & 4
2, 2½, 3, 4 & 5
23 3/4"
19 3/4"
Figure 4. Overall Dimensions
Table 2. Blower Assemblies
6
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CIRCULATING AIR REQUIREMENTS
CAUTION:
WARNING:
HAZARD OF ASPHYXIATION: Do not
cover or restrict return air opening.
Donotallowcombustionproducts
to enter the circulating air supply.
Failure to prevent the circulation
of combustion products into the
livingspacecancreatepotentially
hazardous conditions including
carbon monoxide poisoning that
could result in personal injury or
death.
• Means shall be provided that prevent
inadvertent closure of flat objects placed over
thereturnairopeninglocatedinthefloorofthe
closet (versus the vertical front or side wall).
• 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.
All return ductwork must be secured
tothefurnacewithsheetmetalscrews.
For installations in confined spaces,
allreturnductworkmustbeadequately
sealed.The joint between the furnace
and the return air plenum must be
air tight.
• 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.
• Noncombustible pans having 1” upturned
flanges are located beneath openings in a
floor 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.
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 floor or platform.
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.
Returnairandcirculatingairductwork
must not be connected to any other
heat producing device such as a
fireplace insert, stove, etc. This
may result in fire, explosion, carbon
monoxide poisoning, personal injury,
or property damage.
• Test the negative pressure in the closet with
the air-circulating fan operating at high speed
andtheclosetclosed.Thenegativepressureis
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 ob-
tain necessary airflow. Use NORDYNE’s
certiduct program to determine proper duct
size for A/C.
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
belessthanspecifiedintheappliance’slisting.
• 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/M5 Furnaces).
Supply Air Connections
Forproperairdistribution,thesupplyductsystem
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.
7
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Location, size, and number of registers should • The M1 Series gas and M5 Series oil furnace
be selected on the basis of best air distribution
and floor 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.
iscertifiedforuseonwoodflooringorsupports,
butmustbeinstalledontopofaductconnector.
This factory supplied accessory must be
installed in the floor cavity and attached to the
supply air duct before the furnace is installed.
Three typical distribution systems are shown
in Figure 5. The location, size, and number of
registers should be selected on the basis of
best air distribution and floor plan of the home.
Requirements and Codes
Installer must be familiar with and comply with
all codes and regulations applicable to the
installation of these heating appliances and
relatedequipment.Intheabsenceoflocalcodes,
the installation must be in accordance with the
currentprovisionsofoneormoreofthefollowing
standards.
A Single trunk duct
• Federal Manufactured Home Constructions
& Safety Standard (H.U.D. Title 24, Part
3280.707[a][2])
Dual trunk duct
B
w/crossover connector
• American National Standard (ANSI-119.2/
NFPA-501C) for all recreational vehicle
installations.
Transition duct
w/branches
C
• American National Standard (ANSI-Z223.1/
NFPA-54) and/or CAN/CSA B149 for all gas-
fired furnace models.
• American National Standard (ANSI-Z95.1/
NFPA-31) and/or CSA B139 for all oil-fired
furnace models.
• AmericanNationalStandard(ANSI-C1/NFPA-
70) and/or CSA 22.1 Canadian Electric Code
Part 1 for all electrical field wiring.
• Units have been researched under standards
UL 307A & B, UL727-1999, ANSI Z21.47b/
CSA 2.3b-2008, and CSA B140.10.
Figure 5.Typical Supply Duct System
FURNACE INSTALLATION
NOTE: These Installation procedures are
suggested for typical furnace installations.
Since all installations are different from each
other, the sequence of instructions may differ
from the actual installation.Only qualified HVAC
technicians should install this furnace.
General Information
Locating and Cutting Duct Openings
Floorcut-outsandfuellineholesmustbecarefully
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 floor.
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 floor 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 floor down to the
top of the supply air duct to obtain the depth of
the floor cavity. NOTE: The depth of the floor
cavity shown as “X” in Figure 9 (page 9) will
determine the correct duct connector.
• Thefurnacemustbeleveledatinstallationand
attachedtoaproperlyinstalledductsystem.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 plenum attached to the A/C coil box and
ductwork within 3 ft. of the furnace must be
installed so that surfaces are at least 1/4”from
combustible construction.
• Thecabinetplugmustalwaysbeusedtoclose
theholeinthesideofthefurnacewhenrotating
the inducer.
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 (page 9).
•
M1/M5 models must be installed with the Nordyne
A/C coil box which are listed according to the
cabinet size of the furnace: “B” cabinet - 920169,
“C”cabinet-920171,and“D”cabinet-920172.
8
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20"
14 1/2"
2 3/4"
FLOOR OPENING
C
L
“X”
REAR WALL OF CLOSET OR ALCOVE
SUPPLY AIR DUCT
2 1/4"
FLOOR
CAVITY
Figure 9. Floor Cavity
FLOOR CUT-OUT
FOR STANDARD
C
L
DUCT CONNECTORS
Duct Connector
Type & Part Number
If Floor Cavity
“X” is:
Standard Duct Round Duct
CUT-OUT FOR
1 3/4"
C
L
C
OPTIONAL
COOLING COIL
C
L
L
7/8” / (22)
2” / (51)
901987A
901988A
901989A
901990A
901991A
901992A
901993A
904008
904009
904010
904011
904012
904013
904014
3/4"
C
C
L
L
4-1/4” / (108)
6-1/4” / (159)
8-1/4” / (210)
10-1/4” / (260)
12-1/4” / (311)
1 3/4"
3/4"
1 7/8"
2 7/8"
ALT FUEL-LINE
ENTRY 1 1/4" Dia.
FUEL
LINE
2"
FURNACE
OUTER
DOOR
Figure 6. Cut-Out Dimensions for
Standard Duct Connectors
Note: Dimensions shown as Inches / (Millimeter)
Table 3. Duct Connector Sizes
20"
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 sufficient clearances
for this type of installation. For an alternate
installation method, see page 10.
C
L
10"
REAR WALL OF CLOSET OR ALCOVE
FLOOR
1.Center the duct connector in the floor opening
with bottom tabs resting on top of the supply
air duct.
CUT-OUT FOR
ROUND DUCT
(14 1/4” DIAMETER)
C
L
2.Mark the cut-out area on the supply air duct by
tracing around the connector tabs (Figure 8) of the
duct connector.
1 3/4"
C
CUT-OUT FOR
OPTIONAL
L
C
C
L
L
3/4"
COOLING COIL
C
L
C
L
3.Remove the duct connector and cut out the
marked area of the supply air duct 1/4” larger
the actual cutout drawn.
1 3/4"
3/4"
ALT FUEL-LINE
ENTRY 1 1/4" Dia.
FUEL
LINE
2"
FURNACE
OUTER
DOOR
1 7/8"
2 7/8"
4.Install the duct connector back in the floor
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.
Figure 7. Cut-Out Dimensions for
Round Duct Connectors
6.Secure the duct connector and the mounting
plate to the wood floor with appropriate size
screws.
Bend tabs
up 90°
Hole for
Gas Line
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 on the mounting plate up 90°.
See Figure 10, (page 10)
Mounting Plate
Duct
Connector
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 specific to your area.
Figure 8. Standard Duct Connector In-
stalled
9
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Staples or sheet metal screws
Duct connector tabs
DUCT CONNECTOR
Narrow
Duct
Narrow
Duct
SUPPLY
AIR DUCT
Duct
Flap
Duct
Connector
BEND TABS TIGHTLY
AGAINST SUPPLY AIR DUCT
Sheet metal
screws
Narrow
Duct
Figure 10. Duct Connector Tabs
Figure 12. Narrow Ducts
Alternate Attachment Method
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
floor opening.
3.Install the mounting plate under the back side
oftheductconnector.SeeFigure13(page11).
NOTE: Align the screw holes in both
components.
4.Secure the duct connector and the mounting
plate to the wood floor with appropriate size
screws.
The standard duct connector is designed for
use on ducts 12” in width. However if there is
insufficientclearancetobendtheductconnector
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).
With Option 1 choice, cut out the metal from
the shaded area.
2.Fold the two flaps (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.
5.Connecttheroundsupplyducttotheunderside
of the duct connector and secure them with
field supplied sheet metal screws.
6.Seal all connections with industrial grade
sealing tape or liquid sealant.
4.Bend the tabs on the bottom of the duct
connector upwards and as tight as possible
against the supply air duct (Figure 12).
5.Form the flaps (Options 1 or 2) up against the
duct connector as tight as possible.
6.Securetheductconnectorflapstothesupplyair
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.
NOTE: Requirements for sealing ductwork
vary from region to region. Consult with local
codes for requirements specific 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
2 and Figures 1 - 4 (page 6). The furnace shall
be appropriately connected to the supply and
returnairdistributionsystemasshowninFigures
14 & 15 (page 11).
7.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 specific to your area.
1.Removefurnaceouterdoor(s)andbottomfuel
line knockout.
2.Place furnace onto duct connector and center
with floor opening.
OPTION 1
OPTION 2
Remove
this
Flap
Supply
Air Duct
Cut Here
Cut Here
3.Slide onto mounting plate. (Bottom rear slots
onfurnaceshouldengagewithmountingplate
tabs.)
4.Secure front with one (1) fastener at each
corner (Figures 14 or 15).
Cut Here
Cut Here
Remove
this
NOTE:Additionalfastenersmaybeusedatrear,
sidesorthroughdoorframe,asdesired,tosecure
furnace to closet or alcove framing.
Flap
Figure 11. Narrow Air Duct Openings
10
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ROOF JACK INSTALLATION
SCREWS
MOUNTING
PLATE
Required ceiling and roof cut-out openings (see
Figure 11) 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.
DUCT
CONNECTOR
FUEL
LINE
HOLES
Roof Jack Selection
1.Determine depth of ceiling cavity from center
of roof opening to center of ceiling opening.
(See Dimension “A” in Figure 16.)
14” SUPPLY
CONNECTION
2.Determine ceiling height and subtract height
of furnace. (See Dimension “B” in Figure 16.)
3.Add dimensions A + B (and X from Table 5
and Figure 18 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 4.
Figure 13. Round Duct Connector Installed
SLIDE FURNACE
ALL THE WAY BACK
ONTO MTG. PLATE
MTG. PLATE TABS
SECURE FURNACE
WITH 2 FASTENERS AT FRONT
CORNER HOLES
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:flexes from 0/12 to 1/12 roof
slope. See Figure 17 (page 12).
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. See Figure 18.
Figure 14. “A” & “B” Cabinet Furnaces
SLIDE FURNACE
BACK AGAINST
MTG. PLATE
MTG. PLATE TABS
• 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.
SUPPLY
AIR DUCT
SECURE FURNACE
WITH 2 FASTENERS
AT FRONT CORNER HOLES
NOTE:Iftheroofjackcrowniscoveredorblocked
with snow, the furnace will not operate properly.
Figure 15. “A” Cabinet Furnace on Coil
Cabinet
ROOF JACK
APPROX. LENGTH
MODEL NUMBER
BELOW FLASHING
SLANT DECK
FLASHING
(F,S)AW(T)1523-(0,2,4)(A,S)
(F,S)AW(T)2135-(0,2,4)(A,S)
(F,S)AW(T)2747-(0,2,4)(A,S)
(F,S)AW(T)3563-(0,2,4)(A,S)
(F,S)AW(T)5195-(0,2,4)(A,S)
15” - 23”
21” - 35”
27” - 47”
35” - 63”
PITCHED
ROOF
"X" (SEE TABLE 5)
CEILING
CAVITY
“A”
Roof
Opening
Flue Pipe
CEILING
51” - 95”
“B”
Combustion Air Pipe
S
AW
T
47 - 2
S
27
FLUE STEEL TYPE
A= ALUMINIZED
S=STAINLESS
F = FLAT FLASHING
S = SLANT FLASHING
MIN. ADJ.
LENGTH
FLASHING
PITCH/12" RISE
0=FLAT
2=2.5/12
4=4/12
AW= ALL WEATHER
Furnace
56" or 76"
TYPE:
BLANK = NON-TRANSIT
T= TRANSIT MODE
MAX. ADJ.
LENGTH
Figure 16. Ceiling Cavity Depth
Table 4. Roof Jack Assemblies
11
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1. LocatecenterofRoofJackopening, measure
13 1/2” from the rear wall of closet or alcove
along the center line of furnace and floor
opening. See Figure 19.
2. Cut ceiling and roof holes as follows:
• Ceiling = 8 3/4” (222 mm) diameter
• Roof = 9 3/8” (238 mm) diameter
IMPORTANT:
R e f e r t o t h e i n s t a l l a t i o n
i n s t r u c t i o n s p rov i d e d w i t h
o p t i o n a l a i r c o n d i t i o n i n g
p a c k a g e s w h e n i n s t a l l i n g
furnaces with optional cooling
coil cabinet or with optional
C* series indoor coils.
Figure 17. Example of Flat Jack
with Flashing
20"
C
L
10"
Figure 18. Example of 2½/12 Slant Jack
with Flashing
REAR WALL OF CLOSET OR ALCOVE
If the home is located in regions where snow
accumulationexceeds7”(HUDsnowloadzones)
useanexternalroofjackextension(p/n901937).
Extensionsareoptionalaccessoriesandmaybe
purchased through your NORDYNE distributor.
24"
CEILING
CUT-OUT FOR
FLUE AND
C
L
ROOF JACK
Locating and Cutting Roof & Ceiling Openings
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
preventdebrisfromfallingintothefurnacebefore
the final roof jack connection is made
FURNACE
OUTER
DOOR
Figure 19. Cut-Out Dimensions for
Flue & Roof Jack
SLANT DECK
FLASHING NUMBER
“X” FACTOR
IS:
ROOF JACK SERIES IF ROOF PITCH IS:
2” in 12”
2-1/2” in 12”
903893 (2.5/12)
903893 (2.5/12)
903894 (3/12)
903894 (3/12)
903895 (4/12)
903895 (2.5/12)
903895 (2.5/12)
903894 (3/12)
903894 (3/12)
903895 (4/12)
2-1/8”
2-1/2”
2-7/8”
3-1/4”
3-5/8”
2-1/8”
2-1/2”
2-7/8”
3-1/4”
3-5/8”
3” in 12”
3-1/2” in 12”
4” in 12”
“F Series
4-1/2” in 12”
5” in 12”
“S” Series (2.5 / 12
Pitch only)
5-1/2” in 12”
6” in 12”
6-1/2” in 12”
Optional Deck Flashings for Flat and 2.5/12 Pitch Roof Jacks. 4/12 Pitch Roof Jacks not applicable.
Table 5. Slant Deck Flashings
12
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Installing The Roof Jack
Secure roof jack with
appropriate fasteners
after connecting to
furnace
1.Applycaulkingcompoundonundersideofroof
flashing to form a continuous strip at least 3/8”
wide around the underside of the perimeter of
the flashing. See Figures 20 or 21.
2.Connect Roof Jack Assembly to the furnace.
InserttelescopingRoofJackAssemblythrough
the opening cut on the roof.
Caulk under roof
flashing to prevent
water leakage
Roof
3.Connect flue pipe to flue collar of furnace.See
Figure 22.
Ceiling
Optional 2-piece ceiling
ring #902521
4.Connect combustion air pipe to furnace collar
with sheet metal screw (See Figure 22).
Figure 20. Flat Roof
NOTE: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.
Upper Roof Jack Section
Secure lower roof
jack section with
no. 10 S.M. screws
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.
Optional Slant
Deck Flashing
Secure flashing
with appropriate
fasteners
Caulk under roof
flashing to prevent
water leakage
5.Attach Roof Flashing. If necessary, shift roof
flashing slightly in the roof opening so that
assembly is in alignment with furnace.
Ceiling
NOTE: If flashing is mounted on 12 degree
angle, it may be necessary to adjust the angle
tomatchtheroofpitch;(1/12-4/12maximum).
Figure 21. Pitched Roof
6.Press down firmly on roof flashing (over
caulking)tomakethesealwithroofwatertight.
7.Secure flashing with appropriate fasteners.
NOTE:Foraddedprotectionagainstleaks,coat
theflashingplateandfastenerswithapproved
roofing compound.
Installation of Transit-Mode Venting System
Manufactured Home Factory
1.Furnace must be installed in accordance to
furnace installation manual.
2.Select appropriate Roof Jack from Table 4
(page 11).
Figure 22. Combustion Air Pipe Connection
3.Roof Jack (less upper Roof Jack crown), with
weathercaptobeinstalledasdescribedunder
Install Roof Jack.
NOTE: Upper Roof Jack crown to be stored in
a prominent location inside manufactured home
until on-site installation.
13
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4.The four warning tags supplied must be
installed as follows:
ELECTRICAL INFORMATION
• To weather cap
• Tofuellineconnectionpoint(Gas)orfurnace
burner (Oil)
WARNING:
To avoid electric shock, personal
injury,ordeath,turnofftheelectric
power at the disconnect or the
main service panel before making
any electrical connections.
• To furnace flame observation door (Gas or
Oil)
• To furnace wall thermostat
5.Transit-mode weather cap to be removed and
upper Roof Jack crown installed (See Figure
24). Do Not Discard screws.
6.Place upper Roof Jack (crown) on to the flue
pipe assembly. NOTE: Make sure inside flue
pipe attaches over inner flue pipe and outer
Roof Jack pipe fits over outer pipe.
7.Secureinplaceusingthree(3),#10,1/2”sheet
metal screws removed in step 5. Do not use
the same holes which secured the rain cap in
place.
• Electrical connections must be in compliance
with all applicable local codes with the current
revision of the National Electric Code (ANSI/
NFPA 70).
• For Canadian installations the electrical
connections and grounding shall comply with
the current Canadian Electrical Code (CSA
C22.1 and/or local codes).
8.Remove and discard venting system warning
tags.
Line Voltage Wiring
It is recommended that 115VAC line voltage be
supplied to the furnace from a dedicated branch
circuit containing the correct fuse or circuit
breaker for the furnace.SeeTable 10 (page 31).
WARNING:
Failure to properly secure the flue
pipe to the furnace may result in
fire, explosion or asphyxiation
when operating the furnace.
IMPORTANT NOTE:An electrical disconnect
mustbeinstalledreadilyaccessiblefromand
located within sight of the furnace. Refer to
the wiring diagram inside the control box
cover or Figures 40 - 45 (pages 34 - 39) for the
wiringofyourparticularunit.Anyotherwiring
methods must be acceptable to authority
having jurisdiction.
UPPER ROOF
JACK (CROWN)
CAUTION:
SCREWS
WEATHER CAP
Label all wires prior to disconnection
whenservicingcontrols.Wiringerrors
can cause improper and dangerous
operation. Verify proper operation
after servicing.
FLASHING
COMPLETED
ASSEMBLY
OUTER PIPE
TO FURNACE
INNER FLUE
PIPE
FLUE ASSEMBLY
IMPORTANT NOTE: Proper line voltage
polarity must be maintained in order for the
control system to operate correctly. Verify
the incoming neutral line is connected to
the white wire and the incoming“hot”line is
connected to the black wire.The furnace will
not operate unless the polarity and ground
areproperlyconnectedasshowninFigure25.
Figure 23. Roof Jack Crown
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.
14
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Connecting Power Supply Wires
Verifying Anticipator Setting
1.Remove the furnace control panel cover.
Afterthefurnaceisinstalled,checkthethermostat
2.Route wires (115 VAC) through the strain anticipator against the nominal setting of 0.4.
relief on the left side of the furnace control box
(see Figure 24).
3.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.
4.Connect the ground wire to the grounding
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 on the milliamp meter. If the heat
anticipator is set too high, the furnace may
delay turning on. If set too low, the furnace
may cycle frequently and not provide comfort
screw.
5.Reinstall the control panel cover and secure
with the original mounting screws.
to the homeowner.
Low Voltage Wiring
The thermostat must be installed according
Recommended T’STAT Wire
Length (Unit to T’STAT)
to the instructions supplied by the thermostat
manufacturer.Lowvoltageconnections(24VAC)
fromthethermostatarewiredtotheterminalstrip
on the integrated control in the furnace.
Thermostat
Wire Gauge
2-Wire
5-Wire
(Heating) (Heating/Cooling)
24
22
20
18
55
90
140
225
25
45
70
NOTE: The thermostat must not be installed on
an outside wall or any other location where its
operation may be adversely affected by radiant
heatfromfireplaces,sunlight,orlightingfixtures,
and convective heat from warm air registers or
electrical appliances. The nominal anticipator
setting is 0.4. (Refer to the thermostat literature
for additional information.)
110
Table 6.Thermostat Wire Gauge
M1/M5 A/C
Ready Furnace
Thermostat
Five-conductorthermostatwireisrecommended
for 24 volt low-voltage circuit (2-wire is required
for furnace only; 5-wire for heating and optional
cooling systems).Refer to table 6 for thermostat
wire information.
Red
Red
Rc
RH
White
White
W
Green
Yellow
Green
Grey
Connecting Thermostat Wires
1.Insert24voltwiresthroughtheplasticgrommet
just above the control panel.
G
Y
2.Connect the thermostat wires to the furnace
low voltage pigtails (see Figure 25).
3.Connect low-voltage circuit to the wall
thermostat.
Figure 25.Thermostat Wiring For
A/C Ready Models
4.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.
Grounding
WARNING:
To minimize personal injury,
the furnace cabinet must have
an uninterrupted or unbroken
electrical ground. The controls
used in this furnace require an
earth ground to operate properly.
Acceptable methods include
electricalwireorconduitapproved
forgroundservice.Donotusegas
piping as an electrical ground!
On-Off
Thermostat Wires
Switch
Furnace
Control Box
Blower
Plug
To combustion
Blower or Flame
Power
Roll-out Switch
Entry
To Gas Valve
or Burner
On-Auto Switch
(Heating Models Only)
Figure 24. Control Panel (All Models)
15
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FUEL SUPPLY AND PIPING
Fuel line installations other than typical
installations shown in Figures 26 and 27
(page 17) 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).
WARNING:
All piping must conform with local
building codes, or in the absence
oflocalcodes,withthemostrecent
edition of the National Fuel Gas
Code ANSI Z223.1 or (CAN/CGA
B149.1 or .2). Failure to follow all
safety warnings could result in
serious injury, death or property
damage.
• 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).
ThegassupplytoyourhomewilleitherbeNatural
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. Instructions for gas conversion are
listed on page 18. Factory installed orifice sizes
are listed in Table 10 (page 31).
This furnace may be installed with left or right
side gas entry.When connecting the gas supply,
provide clearance between the gas supply line
and the entry hole in the furnace casing to avoid
unwanted noise and/or damage to the furnace.
Typical gas service hookup for this furnace is
shown in Figure 26. Table 14 (page 37) lists
gas flow capacities for standard pipe sizes as a
function of length in typical applications based
on nominal pressure drop in the line.
Fornaturalgasoperation,thefurnaceisdesigned
for 7” W.C. inlet pressure. Pressure is reduced
to 3 1/2” W.C. by the pressure regulator in the
gas valve. The maximum inlet pressure for the
valve is 13” W.C.
IMPORTANT NOTES:
• Some local regulations require the
installation of a manual main shut-off
valve and ground joint union external to
the furnace (Figure 36).The shut-off valve
should be readily accessible for service
and/or emergency use. Consult the local
utility or gas supplier for additional
requirements regarding placement of the
manual main gas shut-off.
• Gas piping must never run in or through
air ducts, chimneys, gas vents, or elevator
shafts.
• Compoundsusedonthreadedjointsofgas
piping must be resistant to the actions of
-liquefied petroleum gases.
On-Off-Fan
Switch
Control
Panel
• The main gas valve and main power
disconnecttothefurnacemustbeproperly
labeled by the installer in case emergency
shutdown is required.
• Flexible gas connectors are not recom-
mended for this furnace but may be used
if allowed by local jurisdiction. Only new
flexible connectors may be used. DO NOT
reuse old flexible gas connectors.
Floor
Floor Cavity
Alt. Fuel
Line Entry
To Gas
Supply
• Adriplegshouldbeinstalledinthevertical
pipe run to the unit (Figure 36).
• All piping shall be black iron pipe, or
equivalently sized steel tubing. Internally
tinned copper tubing may be used for gas
supply systems.
Figure 26.Typical Gas Piping
16
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For L.P. gas, pressure to the gas valve must be One Line System
more than 11” W.C. but not more than 13” W.C. The one line system is highly recommended
Pressure is reduced to 10”W.C. by the pressure where vertical lift, from bottom of tank to pump,
regulator in the gas valve.
is less than eight feet (Figure 27). A single line
hookup has the advantage of lower cost and
quieter operation.
CAUTION:
Two Line System
Furnace conversion must be per-
formed by a qualified technician.
Improper conversion can cause
unsafe operation, explosion, fire
and/or asphyxiation.
If a two pipe system is used or if oil is taken from
the bottom of the tank, a filter is recommended.
A two line system should only be used if 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.
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.
3.Route the return line up through the furnace
base to the return port of the pump.Route the
other end of the line to the tank, using 3/8”
O.D. copper tubing or 1/4” pipe with the ends
capped.
4.Insert the return line through the second
opening in the duplex bushing. If the bottom
of the tank is lower than the pump intake, the
tube should be inserted three or four inches
from the tank bottom. If the bottom of the tank
is higher than the pump intake, the return line
shouldextendnotmorethan8”insidethetank.
• Useatankcapacitysuitablefortheapplication
with a weatherproof, capped fill opening and
a shielded vent to let in air as fuel is used.
• The inside of the tank must be clean before
filling. All water, rust, sediment, and debris
must be flushed out.
• A fuel or tank gauge (Figure 27) is recom-
mended for easy checking of the fuel level.
Check the gauge reading with a dipstick.
• Locate the storage tank conveniently near
the home. If the fuel tank is installed above
ground, the tank may rest 3 to 4 inches off
the ground. Fuel tanks may also be buried if
properlycoatedtoresistcorrosion.Thevertical
dimension from the bottom of the fuel tank to
the fuel pump must not exceed 10 feet.
Fuel line Hook-Up
1.Use a 3/8” O.D. copper tubing for the fuel line.
NOTE: 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. See Figure 27.
3.Insertoneendofthetubingthroughtheduplex
bushing until it is three to five inches from the
bottom drain. Tighten the bushing.
4.Route the line where it will not incur any
damage.Make bends gradual and avoid kinks
which might restrict oil flow.
• Keep the tank filled, especially in the summer
to reduce the accumulation of condensation.
Cordset
Bypass Solenoid Valve
Pressure Adjustment
Screw
Nozzle Port
3/16 Flare Fitting
Beckett
Inlet Port
1/4 NPTF
INLET
USE ONLY WITH
VALVE ON DELAY
3/8" Oil Supply Line
A2EA-6520
GPH 100-150 PSI 3450 RPM
NO. LIGHTER FUEL
GPH 150-200 PSI 3450 RPM
NO. FUEL
Oil
Furnace
4
2
&
Flue Gas
Sampling
Hole
3
2
INLET
BY-PASS
Vent with cap
Gauge
Made by Suntec
Exclusively for Beckett
2" Duplex
Bushing
Bleed & Gauge Port
Top of Tank
2" Fill
Inlet Port
1/4 NPTF
Return Port - Install 1/6” Bypass Pipe
Plug for 2-pipe System Only.
(Use 5/32” Allen Wrench)
On-Off-Fan
Switch
Shut-off
Valve
Guide
Pipe
8 ft.
Control
Panel
If fuel pump fails to lift oil, check for air
leaks and tighten all fuel fittings. Re-
prime fuel pump by injecting fuel oil into
optional (top) return port. Replace return
port plug and repeat priming procedure.
Drain
Oil-Gun
Burner
End of Oil Supply Line
3" to 5" Above Bottom Drain
Optional
Fuel
Filter
Alternate
Fuel Line
Entry
Floor
NOTE: Additional venting may be
Floor Cavity
required if tank is filled rapidly.
Figure 27.Typical Oil Piping for Above Ground (Single-Line) Supply
17
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5.Open the furnace door and connect the oil line
to the intake port on the pump. Tighten other
port plugs on the pump. NOTE: Verify the oil
line is airtight! Air leaks can cause the pump
to lose prime and will create other problems
such as nozzle failure, odors, rumbling noise,
and false safety shutdown.
6.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.
to a dedicated pump prime mode, during
whichthemotor,igniterandvalvearepowered
for 4 minutes. The yellow LED will be on.
NOTE: If prime is not established during the
four minute pump prime mode, repeat step 3
until the oil pump is fully primed.
4.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.)
Leak Check
Fuel Oil Type
To eliminate problems caused by air in the oil Do not use fuel oil heavier than Grade No. 2.
line, all connections in the oil supply line and Grade No. 1 may be used where the oil supply
all plugs, nuts, and fittings on the pump must is subject to low temperatures.
be airtight. NOTE: This includes the nut that
DO NOT USE GASOLINE, CRANKCASE OIL,
OR ANY OIL CONTAINING GASOLINE.
covers the pressure adjustment. It is important
that the hook-up be done carefully and with a
good flaring tool.
WARNING:
Prepare the burner for priming by attaching a
clear plastic hose over the bleed port fitting and
fullyopeningthepumpbleedport.Useasuitable
container to collect purged oil.
Failure to keep supply of oil clean
by various procedures described
above may cause failure of certain
componentssuchasthefuelpump
gears, check valve, shaft seal, or
burner nozzle which may result in
a burner fire.
To ensure continuous operation, use a wire to
jumpterminalsT-T (orF-F)ontheprimarycontrol
while burner is running.
After the piping to the furnace is complete, all
connections must be tested for leakage. This
includes pipe connections at the main gas valve,
Conversion to Propane (LP) Gas
emergency shutoff valve and each joint or union.
Thisgasfiredheatingappliancewasshippedfrom
Thesoapandwatersolutioncanbeappliedusing
the factory for use with natural gas.However, the
a small paintbrush. If any bubbling is observed,
appliance can be converted for use with LP gas.
theconnectionisnotsealedadequatelyandmust
Use the following procedure for gas conversion
be retightened. Repeat the tightening and soap
of the burner. See Table
check process until bubbling ceases.
Atmospheric and Direct Ignition Furnaces
Priming furnaces equipped with Honeywell
1.Follow the instructions “How to Shut Off Gas”
R7184 primary control:
on pages 21 or 22.
1.While the ignition is on, press for 1/2 second
2.Disconnectthegaspipeunionandtheelectrical
(or less), and release the reset button. The
wires connected to the gas valve.
lockout time will be extended to 4 minutes.
3.Remove the pilot tube and thermocouple from
2.Ifprimeisnotestablishedwithinthe4minutes,
the gas valve (M1G).
the control will lock out.Press the reset button
4.Remove the gas valve assembly:
to reset the control.
a. Remove screw(s) from gas valve bracket.
3.Repeat steps 1 & 2 (if needed) until the oil
Gas valve and spud may be removed.
pump is fully primed.
Orifice is located at the end of the spud
(M1G or M1M) or remove three (3) bolts
Priming furnaces equipped with the Beckett
from U-shaped manifold plate and orifice
7505 primary control:
assembly (M1B).
1.After the burner starts, press and hold the
5.Replace the main orifice with the L.P. gas
reset button until the yellow LED turns on (15
orifice supplied in the envelope located by the
seconds). This indicates that the button has
gas valve. Verify the orifice size matches the
been held long enough.
nameplate or Table 10 (page 31). NOTE: It is
2.Release the reset button.The yellow LED will
not necessary to convert the pilot orifice.
turn off and the burner will start up again.
3.At burner start up, click the reset button while
theigniterisstillon.Thistransitionsthecontrol
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6.For Honeywell gas valves with the regulator
converter (Figure 28, page 19):
OR
A
P
a. Unscrew the pressure regulator cap and
check for the letters NAT or LP.
b. Invert the cap and tighten until snug.
7.For Robertshaw gas valves with the regulator
converter (Figure 29):
PRESSURE
REGULATOR
CAP
OTHER SIDE
OF CAP
A
a. Remove the black cover and unscrew the
converter located on top of the gas valve.
b. Invert the converter: for LP the red ring will
belocatedatthebottomandtheLPstamping
on the converter will appear right side up.
c. Screw converter back into the regulator,
hand tight plus 1/8 turn. Replace the black
cover on the converter top to protect the
threads.
M11678
Figure 28. Honeywell Gas Valve
8.Reassemble the burner assembly into the
furnace.
9.Reconnect the gas piping and electrical wires
to the gas valve.
LP Gas
Configuration
10. Open the manual shut-off valve and follow
the Lighting and Operating instructions on
page 22.
Red
High Altitude Conversion
High altitude conversion with this furnace
depends on the installation altitude and the
heating value of the gas. The installation of this
furnace at altitudes above 2,000 feet must meet
the requirements of the National Fuel Gas Code
orlocaljurisdiction.InCanada,therequirements
for high altitude are different and governed by
CGA B149.1. Please consult your local code
authority.
Black Cover
Natural Gas
Configuration
Figure 29. Robertshaw Gas Valve
Flue Gas Sampling
It may be necessary to take flue gas sampling
from oil and gas furnaces (M5S 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.
WARNING:
The reduction of input rating nec-
essaryforhighaltitudeinstallation
may only be accomplished with
factory supplied orifices. Do not
attempt to drill out orifices in the
field. Improperly drilled orifices
may cause fire, explosion, carbon
monoxide poisoning, personal
injury or death.
1.Turn off all electric power to the appliance.
2.Remove the black plastic cap located above
the blower. Do not discard cap.
3.Drill a hole through the top of the blower
compartment. NOTE: Hole diameter should
be same size as sampling tube.
4.Insert sampling tube through the drilled hole
and into the heat exchanger.
This furnace is shipped from the factory with
orificesandgasregulatorsettingsfornaturalgas
operation at sea level altitudes.At 2000 feet, the
NFGC requires that this appliance be derated
4% for each 1000 feet of altitude. For example,
the input needs to be reduced 8% at 2,000 feet,
12% at 3,000 feet and etc. This deration is in
reference to the input rate and gas heating value
at sea level. See Table 12 (page 32).
5.After a complete check and adjustment
of furnace performance, seal the drilled
hole with a screw larger than the hole.
NOTE: Seal the screw threads with silicon
sealant - rated at least 500° F.
6.Plug the outside hole with the plastic cap
removed in step 3.
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STARTUP AND ADJUSTMENTS
LightingInstructions-StandingPilotModels.
1.Set the thermostat to the lowest setting.
2.Turn off all electric power to the appliance.
3.Remove the furnace door.
PLEASE READ ALL SAFETY INFORMATION
BEFORE LIGHTING THE FURNACE
4.Push in and move the gas control lever to the
OFF positon (Figure 30). DO NOT FORCE!
5.Wait10minutestoclearoutanygas.Ifyousmell
gas, STOP! and read the Safety Information.
If you don’t smell gas, proceed to step 6.
6.Find pilot - follow metal pilot tube from gas
control valve. Open hinged fire observation
door. The pilot is found at the end of the pilot
tube just left of the pilot shield (Figure 31).
7.Lightlydepressthegascontrolleverandmove
it to the ON position. Release and move the
lever to the PILOT position.
8.Move the control lever to SET and hold.
Immediately light the pilot with a match.
Continuetoholdthecontrolleverforaboutone
(1) minute after the pilot is lit. NOTE: The pilot
flame is adjustable by turning the adjustment
screw located on the gas valve with a small
screwdriver. See Figure 29.
WARNING:
FIRE OR EXPLOSION HAZARD
WHAT TO DO IFYOU 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
fromaneighborsphone.Followthe
gas suppliers instructions.
• If you cannot reach your gas
supplier, call the fire department.
9.Release the lever and it will spring back to the
PILOT position.NOTE: Pilot should remain lit.
Ifitgoesout, repeatsteps4through8above.If
the lever does not spring back when released,
immediatelycallyourservicetechnicianorgas
supplier.If the pilot will not stay lit after several
tries, move the gas control lever to OFF and
call your service technician or gas supplier.
10.Move the gas control lever to ON.
WARNING:
Before placing the furnace in
service, it must be checked to
ensure it is equipped for the type
ofgasbeingused.Theburnerflame
must be observed and adjusted
if necessary. Failure to observe
this caution may result in unsafe
operation,explosionand/orfire,or
asphyxiation. See the Gas Supply
and Combustion Air sections.
11.Turn on all electric power to the furnace.
• The first lighting of the furnace after any
home setup must be performed by a
qualified service technician.
• If this appliance has a pilot that must be lit by
hand, follow these instructions exactly.
• BEFORE LIGHTING: Smell all around the
furnace for gas and next to the floor. Some
gas is heavier than air and may settle on the
floor.
• Use only your hand to push in the gas control
lever.Neverusetools.Iftheleverwillnotpushin
byhand,don’ttrytorepairit.Forceorattempted
repair may result in a fire or explosion. Call a
qualified service technician.
Set Position
Pilot Position
Gas Control Lever
Figure 30. Standing Pilot Valve
PILOT
BRACKET
• Do not use this furnace if any part has been
under water. Immediately call a service
techniciantoinspectthefurnaceandtoreplace
any part of the gas valve or control system
which has been under water.
Figure 31. Lighting The Furnace
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12.SetthethermostatmodetoHEAToradesired 1.Set the thermostat to the lowest setting.
temperature setting and then ON.
2.Turn off all electric power to the appliance.
3.Remove the furnace door and turn off the gas
valve:
WARNING:
• Honeywell:push in and turn the gas control
knob clockwise to OFF (Figure 32)
Close the hinged fire door. If door
is left open or spring is broken it
mayallowproductsofcombustion
intothelivingspacebythefurnace
blower, resulting in possible
asphyxiation.
• Robertshaw: push the gas control lever to
the OFF position (Figure 33).Do not force!
4.Wait ten (10) minutes to clear out any gas. If
you smell gas, STOP! and follow the Safety
Information on page 19. If you do not smell
gas, proceed to next step 5.
5.Set the thermostat MODE the ON position.
6.Turn the gas valve ON:
13.Replace the furnace door.
• Honeywell: push in and turn gas control
knob counter-clockwise to ON (Figure 32).
• Robertshaw: push the gas control lever to
the ON position (Figure 33). Do not force!
7.Replace the furnace door.
NOTE:Intheeventofanyflashbackorexplosion,
immediately shut off the furnace and call your
service technician.
8.Turn on all electric power to the appliance.
9.ChangethethermostatmodetoHEATandthe
temperatureselectortoadesiredtemperature
level.The igniter should light in approximately
75 seconds. If the appliance will not operate,
see“HowToShutOffGas-DirectIgnition”and
call your service technician or gas supplier.
WARNING:
Should overheating occur, or the gas
supply fails to shut off, shut off the
manualgasvalvetothefurnacebefore
shutting off the electrical supply.
NOTE:Intheeventofanyflashbackorexplosion,
immediately shut off the furnace and call your
service technician.
AVERTISSEMENT:
En case de température excessive,
ou sail est impossible de cooper
l’alimentation en gaz, fermer le
robinet manuel d’alimentation en gaz
du générateur d’sir chaud avant de
cooper l’alimentation électrique.
How to Shut Off Gas - Standing Pilot
1.Set the thermostat to the lowest setting.
2.Turn off all electric power to the appliance at
the breaker or fuse box.
GAS CONTROL KNOB
Figure 32. Direct Ignition
Gas Valve - Honeywell
3.Remove the furnace door.
4.Push in the gas control lever and move to the
left to the OFF position. DO NOT FORCE!
5.Replace the furnace door.
Operating Instructions for Direct Ignition
Models M1M
Directignitionfurnacesdonothaveapilot.Ignition
is accomplished by a silicon carbide hot surface
ignitor. A control module takes care of all timing
functions.After lighting, the control module uses
the ignitor as a flame sensor, shutting off gas
should the flame go out. There are no external
relays or timing devices.Do not try to light this
furnace by hand. The control module is not
field serviceable.
Gas Control Lever
Figure 33. Direct Ignition
Gas Valve - Robertshaw
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How to Shut Off Gas - Direct Ignition
1.Set the thermostat to the lowest setting.
2.Turn off all electric power to the appliance
before servicing unit.
3.Set the furnace On-Off Switch to OFF.
• Honeywell(Figure32):Turngascontrolknob
clockwise to OFF, Robertshaw (Figure 33):
Push the gas control lever to OFF.
• For oil, shut off all valves.
7.Turn electric power to the appliance ON.
8.SetthethermostattoHEATand/orthedesired
temperature setting.The furnace should light
in approximately 45 seconds. If the appliance
willnotoperate, followtheinstructions“Howto
Shut Off Gas - Direct Ignition Furnace” (page
21) and call your service technician or gas
supplier.
In the event of any flashback or explosion,
immediately shut off the furnace and call your
service technician.
4.Replace the furnace door.
Operating Instructions for Oil Gun Furnaces
IfyourfurnacemodelnumberbeginswithM5S*,
the furnace is equipped with an ignition device
which automatically lights the burner.Do not try
to light this furnace manually.
How to Shut Off Gas - Oil & Gas Gun
1.Set the thermostat to the lowest setting.
2.Turn off all electric power to the appliance at
the breaker or fuse box.
3.Set the thermostat MODE switch to OFF.
4.Turn the gas valve OFF:
1.Open all valves in the oil line.
2.Verify the fire door is closed.
3.Set the furnace On-Off switch to ON.
4.Set the thermostat to the desired setting.
• Honeywell:push in and turn the gas control
knob clockwise to the OFF position (Figure
32).
• Robertshaw - push the gas control lever to
the OFF position (Figure 33).
NOTE: M5 oil gun furnaces may be converted to
gasguninthefieldbyusingtheproperconversion
kit listed in the RPL.
5.Replace the furnace door.
Operating Instructions for Gas Gun Models
If your furnace model number begins with M1B,
the furnace does not have a pilot. Ignition is
accomplished by a silicon carbide hot surface
ignitor.A control module takes care of all lighting
and timing functions. There are no external
relays or timing devices. Do not try to light this
furnace by hand. The control module is not
field serviceable.
NOTE:M1Bgasgunfurnacesmaybeconverted
to oil gun in the field by using the proper
conversion kit listed in the RPL
Burner Adjustments
Burnersettingsaremadeatthefactory.However,
these settings may change during shipping,
handling, and installation. The following items
should be checked and readjusted if necessary.
1.Before operation, smell for gas all around the
furnace, especially near the floor because
some gases are heavier than air and will settle
onthefloor.Ifyoudetectgas, STOPandfollow
all the safety instructions.
2.Set the thermostat to the lowest setting.
3.Turn off all electric power to the appliance.
4.Turn off the gas valve:
Gas Pressure
The gas pressure can be checked with a
manometer at the pressure tap located on the
side of the gas valve. The gas valve pressure
regulator can be adjusted by removing the
regulator selector stack and turning the slotted
insert located directly under the selector stack.
The regulator selector stack must be secured
in place before each pressure reading is taken.
Natural gas manifold pressure should be 3.5”
W.C. and L.P. gas manifold pressure should be
10” W.C. Replace the gas pressure tap plug on
the gas valve.
• Honeywell: push in the gas control knob
and turn clockwise to OFF (Figure 32).
• Robertshaw: push the gas control lever to
OFF(Figure33).Thelevercannotbeplaced
in the off position unless it is pushed in
slightly. DO NOT FORCE!
5.Wait ten minutes to clear out any gas. If
you smell gas, STOP! and follow the safety
information. If gas is not detected, proceed to
the next step.
6.Set the furnace On-Off switch to the ON
position.
Pilot Flame (Standing Pilot Only)
The pilot flame can be adjusted by turning the
pilot adjustment screw, located on top of the
gas valve (See Figure 30, page 20). The pilot
flame height should be between 3/4”and 1.”The
flame tip should be visible just above the pilot
bracket when viewed through the observation
door. The same pilot orifice is used with both
natural and LP gas.
• Honeywell:turnknobongascontrolcounter
clockwise to ON.
• Robertshaw: push the gas control lever to
ON.
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Combustion Air
The Smoke should be N0. 0 on the Bacharach
In order for the flame to burn efficiently, it must Scale, and 0 to 0.02 negative draft over fire.
receive adequate combustion air. The amount
Electrode Setting (Oil Gun Only)
Poor ignition of the oil spray may result if the
electrodes are not adjusted as shown in Figure
34.Do not permit any electrodes to be grounded
to any surface.
of combustion air required varies according to
altitude, actual B.T.U. content of the fuel, gas
pressure, conversion to another gas and other
factors. The burner flame should be observed
and any necessary adjustments made before
the furnace is placed into service. See Table 7
for Factory Air settings.
Switching Ignition Control between
Interrupted and Intermittent Duty (Oil Gun
Only)
Honeywell and Beckett oil primary controls can
beswitchedbetweeninterruptedandintermittent
ignition control. To switch from interrupted duty
(Factoryset)tointermittentduty,removetheblue
wire from the quick-connect terminal.Attach the
burnermotorandigniterwiretotheburnermotor
(orange) control terminal by splicing or adding
tab adapters. Seal and isolate any bare wires.
CAUTION:
•Combustion air adjustment must
be made only by a qualified tech-
nician. Improper air adjustment
may cause unsafe operation, ex-
plosion and/or fire asphyxiation.
•If the input to the furnace is too
great because of excessive gas
pressure, wrong size nozzle or
orifice, high altitude, etc., the
burner flame will be sooty and
can produce carbon monoxide,
which could result in unsafe
operation, explosion and/or fire
or asphyxiation.
5/32” GAP
ELECTRODE
5/16” ABOVE CL
NOZZLE
0-1/16”
1 1/8”
Model
66,000
86,000
Nat. Gas
3.5
LP Gas
Oil
3.5
5
3.5
6
5.3
Table 7. Factory Combustion Air Settings
Gas Gun
Combustion air box adjustment is made to the
main burner by loosening the two lock nuts on
the plastic air shutter, located on the left side of
theburnerblowerhousing.Airshutteradjustment
line is located on the same side of the blower
housing. Turn the plastic shutter to a smaller
number(counterclockwise)forlessairtoalarger
number (clockwise) for more air. Gently tighten
thelocknutsaftercompletingtheadjustment.For
bestresults,useinstrumenttomeasurebetween
8 - 9% CO2, after the combustion air has been
adjusted.Note:Donotover-tightenthelocknuts.
This may damage the plastic air shutter.
Figure 34. Oil Gun electrode Position
Oil Gun Only
ItisrecommendedthattheCO2 andSmokelevels
be measured for maximum performance. CO2
readings should be 10 - 11% for 66,000 BTUH
furnacesand12-13%for86,000BTUHfurnaces.
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OPERATING SEQUENCE
Standing Pilot
1 On a call for heat, the thermostat contacts
close,supplying24VACtothegasvalve.When
energized, the valve steps open at a reduced
flow and opens fully within 14 seconds.
Oil Gun Furnace with Honeywell R7184 /
Beckett 7505 Control - M5S Models
1.When a call for heat is initiated, there is a 2
to 6 second delay while the control performs
a safe start check.
2.The ignition and motor are turned on and a
flame should establish within a 15-second
lockouttime.NOTE:Burnerwillprepurgefor15
seconds if equipped with Honeywell R7184B
or Beckett 7505B Control.
3.If flame is not sensed within the 15-second
lockout time, the control shuts down on safety
lockoutandmustbemanuallyresetbypushing
the reset button on the control. If control locks
over three times in a row, the control enters
restricted lockout.To reset Honeywell R7184:
Hold down the reset button for 45 seconds
untiltheLEDflashesonce.Beckett7505:Hold
down reset button for 15 seconds until the red
LED turns off and the yellow LED turns on.
2.When the call for heat is satisfied, the
thermostatcontactsopen,shuttingoffgasflow.
Standing Pilot w/Induced Draft Blowers
1.On a call for heat, the thermostat contacts
close, supplying 24 VAC to the relay.
2.The relay contacts close and the induced draft
motor energizes.
3.When the inducer starts, the air pressure
switchclosesat-0.20W.C.differentialpressure
and energizes the gas valve.The valve steps
open at a reduced flow and opens fully after
approximately 14 seconds.
4.When the call for heat is satisfied, the
thermostat contacts open, the gas valve shuts
offgasflow,andtheinduceddraftblowerstops.
WARNING:
M1M Models with Direct Ignition
If furnace still doesn’t light, turn
thefurnaceoffasdescribedabove
and call your technician. In the
event of flashback or explosion,
immediately shut off furnace and
call your service technician.
1.On a call for heat, the thermostat contacts
close, supplying 24 VAC between terminals
C and W of the control module.
2.Whentheinducerstarts,theairpressureswitch
closes at -0.20 W.C. differential pressure and
energizes the gas valve.
3.Aftera45secondpurge,theignitorisenergized
for a 30 second warm-up period. After warm
up, the gas valve opens. NOTE: The time for
ignitionisapproximately6seconds,afterwhich
the gas valve either remains open if flame is
sensed, or closes if flame is not sensed.
5.If flame is not sensed, the sequence repeats
four more times before a lockout occurs. To
reset, wait 30 seconds and then interrupt the
24VAC power by turning the room thermostat
below room temperature, then returning it to
the original set point.
4.Afterflameisestablished, theignitionremains
on for 10 seconds to ensure flame stability. It
then turns off.
5.The circulating air blower will energize after
the temperature fan switch closes.
6.The furnace runs until the call for heat is
satisfied.
7.Thecirculatingairblowerwillde-energizewhen
the temperature fan switch opens.
Gas Gun Models
6.If flame does not establish on the 5th attempt
(initialfire+4re-tries),thecontrolde-energizes
the gas valve, the red LED flashes 4 times,
and the furnace locks out heat operation for
1 hour. See Table 9 (page 29).
7.If a flame is present, the control energizes the
main blower on heat speed 30 seconds after
the gas valve opens.
8.When call for heat is satisfied the thermostat
contactsopen, thegasvalveshutsoffgasflow
and the combustion blower remains on for a
30 second post-purge period.
9.The main blower is de-energized after a 120
second blower off delay.
1.On a call for heat, the furnace control begins
anignitionsequencewhichlastsapproximately
45 seconds.
2.After this sequence, the control module tests
to see if flame is sensed. If it has, the furnace
continues to heat until the thermostat is
satisfied.
3.If the burner has not lit, the ignition sequence
is repeated a maximum of two more times. If
flame is not sensed after three attempts, the
controlentersLockoutandnofurtherattempts
to light the burner will occur.If Lockout occurs,
contact a qualified service technician for
assistance.
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4.When call for heat is satisfied, the thermostat
Roll Out Switch (M1G - 056 & 070)
contacts open and the gas valve shuts off gas Thefurnaceisprotectedbyamanualresetsafety
fl o w .
switch located on the bottom left hand side of
the combustion pipe.
WARNING:
Should overheating occur, or the gas
supply fails to shut off, shut off the
manualgasvalvetothefurnacebefore
shutting off the electrical supply.
Oil Burner Primary Control
The primary control for oil gun furnaces starts
the burner, monitors a safe operating cycle, and
shuts the burner off at the end of a heating cycle.
The control uses a light sensing transducer to
determine if fuel ignition has been successfully
attained. If ignition is not attained by the end of
thesafetyignitiontimingperiod,thecontrolshuts
theburneroffandenters“lock-out.”SeeFigure35.
AVERTISSEMENT:
Summer Cooling - (B, C, & D Series)
Your furnace is A/C ready, equipped with A/C
relay and transformer. The unit is equipped to
use a 4-wire thermostat. When using a 5-wire
thermostat, RC and RH should be jumped (see
instructions included with thermostat).
En case de température excessive,
ou sail est impossible de cooper
l’alimentation en gaz, fermer le
robinet manuel d’alimentation en gaz
du générateur d’sir chaud avant de
cooper l’alimentation électrique.
FURNACE CONTROLS & FUNCTIONS
Furnace On-Off Switch
This switch turns electrical power to the furnace
on and off. The switch must be set in the ON
position for the furnace to operate. For M1G
models, in warm weather there is a possibility
of the blower turning on periodically or operating
continuously due to a heat buildup within the
furnace by a combination of warm weather and
heat from the pilot. This is normal operation as
long as there is power to the furnace and the
furnace On-Off switch is in the ON position. If
blower operation is not desired, the furnace On-
Off switch may be set in the OFF position to cut
theelectricalpowertothefurnace.SeeFigure35.
Upper
Limit
Switch
Lower
Limit
Switch
Furnace
On-Off
Switch
Fan
Control
Oil
Burner
Control
Limit Control
Oil
Thisfurnaceisprotectedbytwohightemperature
safety limit switches. The auxiliary (upper) limit
switch and the high temperature (lower) limit
switch are automatic reset types. If either limit
trips, the burner will shut off. If either limit switch
tripsoffagainsoonafterresetting,setthefurnace
furnace On-Off switch to the OFF position and
call your authorized serviceman.See Figure 35.
Pump
Figure 35. Furnace Controls - Oil Furnace
Gas Valve
The gas valves for the gas furnaces are a 100%
shut-off type and will fail safe, if for some reason
the gas is turned off. The valve is a “step-open”
type for M1G models and “slow-open” for M1M
and M1B models which means it opens to a
low-fireposition,andafterafewseconds,“steps-
open” to high-fire.
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TROUBLESHOOTING
Standing Pilot Models
Main Burner Does Not Ignite
1.Check the electrical supply to the furnace.
2.Verify the furnace furnace On-Off switch is in
the ON position.
3.Check for proper thermostat operation.
4.Check for broken or open thermostat wires.
5.Verify the insulation located on the inside of
the front panel is glued securely around the
fan switch and the limit switch.
6.Shut off the electrical supply to the furnace
and remove the electrical box cover.
7.Check for a defective transformer or blown
fuse.
8.Check electrical circuit for proper grounding,
polarity, and make sure the electrical
connections are tight.
9.Checkthelimitswitches.Didtheyfailtoclose?
10. Replace the electrical box cover and restore
electrical power to the furnace. Turn the
furnace On-Off switch to ON and raise the
thermostatsettingaboveroomtemperature.
11. Check for 24 VAC at the gas valve. Replace
the valve if the pilot is established and it
does not open when powered with 24 volts.
High Gas Bills
a.Verify the proper orifices are being used.
b. Check the return air system. Is it clear and
free of blockage?
c. Check the furnace filter. Is it clean or need
replacing?
d.Verify the home is insulated, windows and
doors fit tightly, and there are no leaks in the
heating duct system.
e.Check the room thermostat. Is the setting
higherthannecessary?Lowhumidityrequires
higher temperatures for the same level of
comfort.Check for proper humidity level in the
home.
Direct Ignition Furnaces Including Gas Gun
M1B Series (see Table 9, page 29)
Burner Motor won’t Run - T-stat Calls for Heat
1.Check the electrical supply to the furnace.
2.Verify the furnace furnace On-Off switch is in
the ON position.
3.Defective thermostat circuit - white and red
thermostat low voltage leads (M1/M5M,
M1/M5B models). If the burner motor or
combustion fan runs, check:
• Thermostat connections
• Thermostat
Powered (24 VAC) Gas Valve - No Main Flame
1.Verify the manual shut-off valve is OFF.
2.Check the pilot flame. It must be established.
3.Check the gas valve control lever. It must be
in the ON position.
4.Check incoming gas pressure.
5.Replace the gas valve if the main burner does
not come on under the above conditions.
4.No voltage to control module - determine if 24
volts (or 120 volts) is available to the control
module. If voltage is not available check for:
• Blown fuse, defective transformer, circuit
breaker, no electrical supply.
• Limit switch open.
• Loose connections.
Combustion Blower Runs - No Flame
1.Defective centrifugal switch (M1B Model).
• Check the operation of centrifugal switch
by removing end bell of the burner motor.
• Clean contacts of motor.
• Ifthecontactsareclosed,replacethemotor.
2.Defective pressure switch (M1M & M1G - 077,
090 Models) - check air tube and electrical
connections.
3.Burner in purge mode - allow 75 seconds for
flame establishing period.
4.Check for proper electrical connections at
purge timer, control box, or gas valve.
5.Checkforgassupply-gaslinevalveon,control
lever on.
Pilot Will Not Light or Goes Out
1.Check the incoming gas pressure.
2.Check for the proper pilot orifice. See
specifications on the furnace nameplate.
3.Check for proper pilot flame adjustment. See
Burner Adjustment section (page 22).
4.Verifythethermocouplemillivoltage.If reading
is not between 18 - 30 mv., the gas valve
electromagnet may be defective. Replace the
gas valve if necessary.
5.Verify the pilot shield is in place.
6.Check for gas leaks (page 18).
7.Check the flue assembly for air leaks.
8.See lighting procedures (pages 20 - 22).
Main Flame Is Not Burning Properly
1.Check the manifold gas pressure.
2.Check for the correct main burner orifice. See
furnace nameplate for specifications.
3.Check the flue for any blockages or loose
connections.
Control Module is Powered - Ignitor won’t Heat
Up
1.DisconnectignitorleadsatAMPreceptacleand
check for 120 volts at the plug during ignition
sequence.
2.Replace ignition control if 120 volts is not
availableatAMPplugduringignitionsequence.
4.Check the combustion air passages for
blockage.
26
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120 VAC Is Available At AMP Plug - Ignitor
Does Not Heat Up
1.Disconnect power to the furnace.
2.Disconnect AMP plug to the ignitor, and check
Circulation Air Blower Will Not Operate Even
Though The Burner Does Operate
• Check thermostat G connection.
• Check wiring to motor.
ignitor resistance with an ohm meter. Set on • Check for a defective motor.
RX1 scale.
Oil Gun - Honeywell R7184 or Beckett 7505
Controls Only - M5S Series.
• Normal reading should be 40 - 75 ohms.
• If above or below this rating at room tem-
perature change ignitor.
Burner does not start with a call for heat.
• Check the electrical supply to furnace.
• Verify the furnace door switch is in the ON
position.
• Check for line voltage (115 VAC) at the oil
primary control.
3.Check for continuity from ignitor receptacle to
burner.
Main Flame Ignites - Burner Locks Out
• Ignition control is not properly grounded.
• Defective ignition control.
• Check indicator LED with burner off, no call
for heat (no flame). See Table 9 (page 29).
- If green LED indicator is on, the cad cell is
seeingstraylightorthecadcellofcontroller
is defective.
• Improper polarity of 120 volt power supply.
• Ignitor has hairline crack.
• Impropergaspressureorburnerairadjustment
is not allowing flame to contact ignitor tip for
flame rectification.
- IfgreenLEDindicatorisoff, goimmediately
to step 5.
• Misaligned ignitor does not allow flame to
contact ignitor tip for flame rectification.
- If LED indicator is flashing (red or green on
Beckett 7505 control), refer to the next step
1 below - Reset primary control.
• Jumper T to T terminals on primary control.
- If burner starts, check thermostat or limit
wiring connections.
Burner Short Cycling - Thermostat Calls for
Heat, Limit Switches Closed
• Check for polarity.
• Check ground.
• Check flue.
• Check combustion air.
• Check gas pressure.
• Check orifice.
• Check the position of ignitor, a normal reading
should be 40-75 ohms.
- Ifburnerdoesnotstart,turnoffpower.Check
all wiring connections.
- If burner does not start, replace primary
control.
Burner starts and then locks out on safety
with Honeywell R7184 LED indicator flashing
½ second on, ½ second off. For Beckett 7505
control, the red LED will flash.
24 Volts Supplied To Gas Valve During Ignition
- No Main Gas Flow
• Gas valve may be defective. Replace if
necessary.
• Gas piping may be plugged. Check for
adequate gas supply to gas valve at union.
1. Reset primary control: To reset the control
from(soft)lockout,thebuttonneedsonlytobe
pressed and released.If the R7184 control is
in restricted mode, press and hold the button
for 45 seconds - until the LED flashes once.If
the 7505 control is in restricted mode, press
and hold the button in for 15 seconds until the
red turns off and the yellow LED turns on.
Burner Operates - Insufficient Heat
• Check thermostat for proper setting and
location. Thermostat should not be located
whereitwillbeaffectedbyanotherheatsource.
• Check for clean filter and proper air flow.
• Check burner for proper gas firing rate.
• Be sure unit is not undersized for its thermal
load.
NOTE: Restricted Lockout: If the control locks
out three times in a row without a complete heat
cycle between attempts, the lockout becomes a
restricted (hard) lockout.
• Check thermostat anticipator. The nominal
setting is 0.4.
Burner Flame Without Motor Running
• Gas valve stuck open, check gas valve for
proper operation (replace if necessary) and
inspect heat exchanger.
• Check for 115 volts to the combustion blower
motor; replace if necessary.
2.If the LED indicator stops flashing and the
ignition remains off, the primary control could
be defective. If line voltage is present at the
igniter terminals, and there is no ignition,
the igniter is likely defective and needs to be
replaced.
• If no power to combustion blower then check
wiringandcontrolmodule;replaceifnecessary.
3.If the stops flashing, burner turns on, but the
control locks out again, check the cad cell. If
27
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the cad cell is operational, replace the primary
control.
OPTIONAL ACCESSORIES
Necessary when the Furnace is Used with
Some Central Air Conditioners
4.If the LED continues to flash at the interval
listed above, verify that the control is not in
restricted mode. If in restricted mode, reset it.
If not in restricted mode, replace the control.
5.If the (LED indicator for R7184 control; green
LED for 7505 control) stays off while the flame
is on, check the cad cell sighting for view of
the flame.
6.If the burner locks out, check the cad cell
resistance. (See Table 8)
7.If the burner stays running, the system is
operational.
If an air conditioner is installed that does not use
thefurnaceblowerforairdistributionandoperates
independently of the furnace, the thermostat
system must have an interlock to prevent the
furnace and air conditioner from operating at
the same time. This interlock system usually
contains either a “Heat-Cool” switch which must
be turned to one of the positions to activate heat
or cool operation, or a positive “OFF” switch on
the cooling thermostat.
The furnace must also be equipped with an
automatic damper to prevent cold air from
being discharged up around the heat exchanger
(NORDYNEp/n901996forfurnaceswithoutcoil
cavity, orp/n901083withcoilcavity).SeeFigure
36or37.Coldairmaycausecondensationinside
the heat exchanger which can rust and lead to
early failure.
8.If the (LED indicator for R7184 control; green
LED for 7505 control) is off, check the cad cell
assembly after disconnecting the line voltage.
Burner will not start and the LED indicator is
flashing at 2 seconds on, 2 seconds off for
R7184 (or the green LED is flashing for 7505).
• Hold the reset button down for 1 - 2 seconds.
If LED indicator continues to flash, wait for
60 - 70 seconds. If it still continues to flash,
replace the primary control.
• Honeywell R7184 control:To check cad cell
resistance,pressandreleasethebuttonduring
the run mode, with the igniter off.The LED will
flash to indicate the cad cell resistance. For
proper burner operation, it is important that
the cad cell resistance is under 1600 Ohms.
For cad cell resistance, see Table 8.
• Beckett 7505 control: To check cad cell
resistance, unplug the cad cell leads (yellow
wires)fromthecontrol.Measuretheresistance
with a meter in the conventional way (when a
flameispresent).Forproperburneroperation,
it is important that the cad cell resistance is
under 1,600 Ohms.
Figure 36. Coil Cavity Damper
LED Flashes (Ohms)
Cad Cell Resistance
1
2
3
4
0-400
400-800
800-1600
>1600
Table 8. Cad Cell Resistance when
sensing flame
Figure 37. Damper without Coil Cavity
28
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Control Module Status Indicators - M1M Series
Status
Red LED Indicator
Steady ON
Control OK
Steady OFF
Rapid flash
No power
False flame or internal control fault
Limit switch is open
One flash
Two flashes
Three flashes
Four flashes
Five flashes
Pressure switch is open
Pressure switch is stuck closed
Lockout due to failed ignition
L1 neutral reversed or L1 voltage not present on L1
Flame Status - A Yellow LED labeled “Flame” is provided to indicate flame status. When flame
is sensed, the flame LED is lit. If flame sense is weak, yellow LED will flash.
Control Module Status Indicator - M1B
Red LED Indicator
Status
The control is in lock-out because the inducer centrifugal switch is or
was stuck closed.
One flash
The control is in lockout because the signal was not received by the
control that the inducer centrifugal switch had closed within the time.
Two flashes
The control is in lockout because a failed ignition attempt, a gas valve
error, or a false flame sensed during the warm up period. If false flame
has been sensed, the control will return to normal operation, and repeat
ignition sequence when the false flame is not present.
Three flashes
Four flashes
The control is in lockout due to a failure within the control board
Control Module Status Indicator - M5S Series
The LED indicator(s) on the oil primary control provides lockout, recycle and cad cell indications.
Honeywell R7184 Control
Green LED Indicator
Status
Cad cell is sensing flame (could be flame or stray light)
Cad cell is not sensing flame
Lockout/Restricted Lockout
On
Off
Flashing - 1/2 sec. on, 1/2 sec. off
Flashing - 2 sec. on, 2 sec. off
Recycle
Beckett 7505 Control
LED Indicator Color
On Continuously
Flashing
Red
Restricted (hard) lockout
Soft lockout
Recycle
Cad cell is sensing flame -
(could be flame or stray light)
Green
Yellow
Pump prime mode or reset
button currently held for 15+ sec.
N/A
Table 9. Control Module Status Indicators
29
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OPTIONAL ADD-ON AIR CONDITIONING
Whether split system or single package, an
energy-saving NORDYNE Air Conditioner is
available that has been designed specifically
for manufactured housing applications and can
best handle your home comfort needs.Ask your
dealer or contractor about NORDYNE add-on
central air conditioning systems.
WARNING:
Use of furnace or air conditioning
components that are not included
inthecertificationofthisappliance
may create a hazard, invalidate
the certification, and in many
states, make installations illegal.
Listed NORDYNE air conditioning
components are specified on the
furnace label.
Single package unit includes cooling coils,
compressor,andverticaldischargefan.Thistype
of unit connects with the existing home air duct
system(anoptionalclose-offdamperisrequired
with the furnace).
Split system unit with vertical discharge for quiet
operation connects with NORDYNE cooling coil
furnace (optional coil cavity required with “A”
model furnaces).
Additional Oil Furnace Maintenance
In addition to the preceding, the following should
be performed by a qualified service contractor
at least once each season for oil-fired furnaces:
• Replace the oil nozzle with the type nozzle
specified for your furnace.
MAINTENANCE
Homeowner Information
• On some closet installations, the return air
• Clean, adjust and replace if necessary the
spark electrodes.
opening to the furnace may be on the floor, • Reset the nozzle/drawer assembly to factory
in the door, in the side wall of the closet, or specifications.
any combination of these.The upper grille on • Cleantheinsideofthefurnaceheatexchanger
the front of the furnace admits return air to the
blower. Return air must be provided back to
the circulating blower in order to provide air
distribution. See Figure 38.
and replace the combustion liner if necessary.
• Clean or replace the oil filter element at the
oil tank.
• Adjust the burner for top efficiency and check
to make sure all fittings are leak-tight.
• Filters-Atleasttwiceeachseason(moreoften
in dusty areas) remove and clean the air filters
with a vacuum or with warm water and soap.
Reinstall when dry. Also clean dust and lint
around furnace and in the furnace vestibule.
• During extremely cold weather, ice may form
on the furnace roof jack (Figure 39). Small
amounts of ice forming on the roof jack
will present no problems to proper furnace
operation. Excessive ice formation could
restrict the combustion air supply to the
burner, causing inefficient burner operation.
If excessive ice has formed on the air inlet or
exhaust portions of the roof jack, it must be
carefully removed.
Figure 38. Periodic Cleaning
Installer Information
All furnaces need periodic service at the
beginning of each heating season. Call your
serviceman to:
Check for
Ice Here
• Remove the air circulator and clean all dust
and lint from the unit with a stiff bristle brush.
• Inspect the combustion chamber blower
compartment, flue collar and Roof Jack.
• Check the gas valve (if applicable) and fuel
line connections for leaks.
Figure 39. Roof Jack
• Make any adjustments necessary for good
operation.
30
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FIGURES & TABLES
Table 10. M1/M5 Furnace Specifications - Factory Settings
31
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ALTITUDE - FEET
FURNACE
MODEL
ORIFICE SIZE AND
OUTPUT CAPACITY
SEA
LEVEL
29
2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000
Orifice Size - Nat. Gas
Orifice Size - LP
Output - MBTUH
29
46
30
47
30
47
30
47
30
48
31
48
31
49
31
49
32
50
M1M/M1G
- 056
45
45.4 41.8 40.1 38.5 37.0 35.5 34.1 32.7 31.4 30.2
Orifice Size - Nat. Gas
Orifice Size - LP
Output - MBTUH
24
42
25
42
26
43
27
43
27
43
28
44
28
44
29
45
29
46
30
47
M1M/M1G
- 070
56.7 52.3 50.2 48.2 46.2 44.4 42.6 40.9 39.3 37.7
Orifice Size - Nat. Gas
M1M - 077 Orifice Size - LP
Output - MBTUH
21
40
23
41
23
42
24
42
25
42
26
43
27
43
28
44
28
44
29
45
61.7 56.9 54.6 52.4 50.3 48.3 46.4 44.5 42.7 41.0
Orifice Size - Nat. Gas
M1G - 077 Orifice Size - LP
Output - MBTUH
21
40
23
41
23
42
24
42
25
42
26
43
27
43
28
44
28
44
29
45
59.9 55.2 53.0 50.9 48.9 46.9 45.0 43.2 41.5 39.8
Orifice Size - Nat. Gas
M1M - 090 Orifice Size - LP
Output - MBTUH
17
36
18
37
19
38
19
38
20
39
21
40
22
41
23
41
24
42
26
43
71.7 66.1 63.5 60.9 58.5 56.1 53.9 51.7 49.7 47.7
Orifice Size - Nat. Gas
M1G - 090 Orifice Size - LP
Output - MBTUH
17
36
18
37
19
38
19
38
20
39
21
40
22
41
23
41
24
42
26
43
69.7 64.2 61.7 59.2 56.8 54.6 52.4 50.3 48.3 46.3
Orifice Size - Nat. Gas
M1B - 066 Orifice Size - LP
Output - MBTUH
26
43
27
44
28
44
28
44
28
45
29
45
29
46
30
47
30
47
30
48
52.6 48.5 46.6 44.7 42.9 41.2 39.6 38.0 36.5 35.0
Orifice Size - Nat. Gas
M1B - 086 Orifice Size - LP
Output - MBTUH
18
37
19
38
19
39
20
39
21
40
22
41
23
42
24
42
26
43
27
43
68.2 62.9 60.3 57.9 55.6 53.4 51.2 49.2 47.2 45.3
NOTES: For Canadian high altitude (2,000 - 4,500’), reduce gas manifold pressure to 3.0” W.C. for
natural gas and 9” W.C. for LP gas. (Includes 4% Input Reduction for Each 1,000 Feet). These specs
do not apply to oil furnace installations. Reference Sources: ANSI Z233.1 & NFPA 54, National Fuel
Gas Code.
Table 11. Equivalent Orifice Sizes for High Altitude Installations
M1/M5*B Models and for use with Blower Kit No. 903773 1/4 Hp 3 Speed
Cooling Speed/ Evap Coil
Heating Speed
Setting
Furance Input
2 Ton
2-1/2 Ton
3 Ton
086, 090
066, 070, 077
56
H
M
L
L
L
L
M
M
M
H
H
H
M1/M5*C Models and for use with Blower Kit No. 903413 1/2 Hp 4 Speed
Cooling Speed/ Evap Coil
Heating
Furance Input
Speed
Setting
2 Ton
2-1/2 Ton & 3 Ton
3-1/2 Ton
4 Ton
077, 086, 090
056, 066, 070
ML
L
L
L
ML
ML
MH
MH
H
H
M1/M5*D Models & for use with Blower Kit No. 903890 3/4 Hp 4 Speed
Cooling Speed/ Evap Coil
Heating
Furance Input
Speed
Setting
2 Ton
2-1/2 Ton & 3 Ton 3-1/2 Ton & 4 Ton
5 Ton
077, 086, 090
056, 066, 070
ML
L
L
L
ML
ML
MH
MH
H
H
Table 12. A/C Blower Speed Selection Chart
32
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GAS INFORMATION
GAS FLOW RATES
CUBIC FEET PER
GAS FLOW RATES
CUBIC FEET PER
TIME FOR
ONE REVOLUTION
(SECONDS)
TIME FOR
ONE REVOLUTION
(SECONDS)
REVOLUTION
OF GAS METER
REVOLUTION
OF GAS METER
1
5
10
1
5
10
10
12
360
300
1,800
1,500
3,600
3,000
66
68
55
53
273
265
545
529
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
257
225
200
180
164
150
138
129
120
113
106
100
95
90
86
82
78
75
72
69
67
12,86
1,125
1,000
900
818
750
692
643
600
563
529
500
474
450
429
409
391
375
360
346
333
321
310
300
290
281
2,571
2,250
2,000
1,800
1,636
1,500
1,385
1,286
1,200
1,125
1,059
1,000
947
900
857
818
783
750
720
692
667
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
102
104
106
108
110
112
114
116
118
120
51
50
49
47
46
45
44
43
42
41
40
39
38
38
37
36
35
35
34
33
33
32
32
31
31
30
257
250
243
237
231
225
220
214
209
205
200
196
191
188
184
180
176
173
170
167
164
161
158
155
153
150
514
500
486
474
462
450
439
429
419
409
400
391
383
375
367
360
353
346
340
333
327
321
316
310
305
300
64
62
60
58
643
621
600
581
56
563
Table 13. Gas Flow Rates (Cubic Feet per Hour)
CAPACITY OF BLACK IRON GAS PIPE (CU. FT. PER HOUR)
FOR NATURAL GAS (SPECIFIC GRAVITY - 0.60)
LENGTH OF PIPE RUN (FT)
NOMINAL BLACK IRON
PIPE DIAMETER (IN.)
10
130
20
90
30
75
40
65
50
55
60
50
70
45
80
40
½
¾
280
190
350
730
150
285
590
890
130
245
500
760
115
215
440
670
105
195
400
610
95
90
1
520
180
370
170
350
1 ¼
1 ½
1,050
1,600 1,100
Input To Furnace (Btu/hr)
Heating Value of Gas (Btu/Cu. Ft.)
Cubic Feet Per Hour Required =
NOTE: The cubic feet per hour listed in the table above must be greater than the cubic feet
per hour of gas flow required by the furnace. To determine the cubic feet per hour of gas flow
required by the furnace, divide the input rate of the furnace by the heating value (from gas
supplier) of the gas.
Table 14. Capacity of Black Iron Gas Pipe (cu. ft. per hour)
for Natural Gas w/ Specific Gravity = 0.60
33
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WIRING DIAGRAMS
B L U E
3 A F U S E
W H I T E
R E D
R E D
G R A Y
B L A C K
B L A C K
B L A C K
B L A C K
Figure 40. Gas Atmospheric Furnace, M1GH 056, 070 Models
34
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B L A C K
B L A C K
B L A C K
W H I T E
3 A F U S E
R E D
R E D
G R A Y
B L A C K
B L A C K
B L A C K
B L A C K
Figure 41. Standing Pilot with Induced Draft Furnace, M1GH 077, 090 Models
35
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W H I T E
O R A N G E ( M E D . L O )
B L U E ( M E D . H I )
B L A C K ( H I G H )
R E D ( L O W )
G R E E N
W H I T E
3 A F U S E
R E D
G R A Y
W H I T E
R E D ( L O W )
B L U E ( M E D . H I )
B L A C K ( H I G H )
O R A N G E
B L A C K
B L A C K
Figure 42. Gas Atmospheric Furnace, A/C Ready, M1GB 056, 070 Models
36
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Figure 43. Standing Pilot with Induced Draft Furnace,
A/C Ready M1G (B, C, D) 077, 090 Models
37
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Figure 44. Gas Direct Ignition Furnace, Heating & A/C Ready - All M1M Models
38
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B U S H I N G
B L A C K
B L A C K
G R E E N
W H I T E
G R E E N
R E D
3 A F U S E
R E D
G R A Y
R E D
G R A Y
W H I T E
O R A N G E ( M E D L O )
B L U E ( M E D . H I )
B L A C K ( H I G H )
R E D ( L O )
( S E E N O T E 3 )
R E D
B L A C K
W H I T E
R E D ( L O )
B L U E ( M E D H I )
B L A C K ( H I )
B L A C K
Figure 45. Gas and Oil Furnaces, A/C Ready - M1B & M5S (066, 086) Models
39
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INSTALLATION / PERFORMANCE CHECK LIST
ELECTRICAL SYSTEM:
INSTALLER NAME:
Electrical connections tight?
Line voltage polarity correct?
YES
YES
NO
NO
CITY _______________ STATE ____________
INSTALLATION ADDRESS:
Supply Voltage: ______________________ VOLTS
Has the thermostat been
calibrated?
YES
YES
YES
NO
NO
NO
CITY _______________ STATE ____________
UNIT MODEL #
Is the thermostat level?
Is the heat anticipator setting
correct?
UNIT SERIAL #
GAS SYSTEM:
Minimum clearances per
Table 1 (page 5)?
YES
YES
YES
NO
NO
NO
Natural
Gas
Gas Type: (circle one)
Propane
NO
Hastheowner’sinformation
been reviewed with the
home-owner?
Gas pipe connections leak
tested?
YES
Has the literature package
been left near the furnace?
Gas Line Pressure: _______________ (in - W.C.)
Is there adequate fresh
air supply for combustion
and ventilation?
YES
NO
Installation Altitude: _____________________ (FT.)
Deration Percentage:_____________________ (%)
Furnace Input: ________________________ (Btuh)
Supply Air Temperature: __________________ (°F)
Return Air Temperature: __________________ (°F)
Temperature Rise: ______________________ (°F)
VENTING SYSTEM:
Vent free from restrictions?
Filter(s) secured in place?
Filter(s) clean?
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Flue connections tight?
Is there proper draft?
709123A (Replaces 7091230)
Specifications & illustrations
subject to change without
¢709123¥¤
709123A
notice or incurring obligations.
Printed in U.S.A. (04/10)
O’Fallon MO
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