Winchester WG SERIES User manual

Winchester by Mortex Products Inc. / Fort Worth, TX 76106 WG Series InstallationInstructions
1
SEALED COMBUSTION
DOWNFLOW GAS FURNACE
MODELS: W G SERIES, SIZES: 60, 70, 77, 90
FOR INSTALLATION IN: MANUFACTURED (MOBILE)
HOMES, RECREATIONAL VEHICLES, PARK MODELS,
MODULAR HOMES AND BUILDINGS.
GENERAL INFORMATION
These down ow sealed combustion furnaces install in
Manufactured Homes, Recreational Vehicles or Modular
Construction. The furnaces conform toPart 3280 (a)(2)
of HUD Manufactured Homes Constructionand Safety
Standards.They must be installedonly with listed RJ-Roof
Jack, Sealed Combustion venting system.
NOTE:These instructions are intended toassist qualied
individuals experienced in theinstallation of heating
equipment.
Some stateand local codes require installation
personnel to be licensed.Readall instructions before
starting the installation.
SAVE THIS MANUAL
NOTICE– Furnaceset-upand any adjustment needed is
responsibility of the installer/retailer/ contractor andis
not covered by the furnace manufacturers warranty.
CHECKLIST: FURNACE START-UP
1. Has furnace roof jack crown been correctly installed.
2. Has the furnace gas valve andburner orice
been cleaned.
3. Is the gas line outlet pressure set for the fuel used.
4. If the home uses acrossover air connector duct, is it
installedper homebuilders installation instructions.
5. Has furnace beenoperated through complete
heating cycle.
CONTENTS PAGE
General Information ................................................................ 1
Specications ............................................................................ 2
Safety Conditions ..................................................................... 3
Installation Standards ............................................................. 3
High Altitude Installation ...................................................... 3
Installation Clearances ........................................................... 3
Return Air ..................................................................................4-5
Alcove &Closet Installation ................................................ 5
Air Distribution Systems ......................................................... 6
Duct Connector/Base ............................................................. 6
Install Furnace ............................................................................ 7
Roof Jack Selection .................................................................. 7
Cut Opening & Install Roof Jack ........................................ 8
Installing In Snow Regions .................................................... 8
Roof Jack On High-Pitch roof ................................................ 8
Connect Power Supply Wires .............................................. 9
Wall Thermostat ........................................................................ 9
Connect Thermostat Wires .................................................... 9
Gas Piping ............................................................................. 9-10
Wiring Diagrams ................................................................
11
.14-16
Final Procedure .........................................................................
Furnace & Air Conditioner Installation ..............................
12
High Altitute Deration Chart ................................................
12
Blower Performance Chart......................................................13
INSTALLATION INSTRUCTIONS
CAUTION: READ ALL SAFETY GUIDES
BEFORE INSTALLING THIS GUIDE
GAS-FIRED
LISTED
U
L
®
RISK OF FIRE OR ELECTRICAL SHOCK
Only qualified service personnel shall be used to
install and provide maintenanceof this furnace.

Winchester Gas Furnace Installation Instructions
Winchester by MortexProducts Inc. / Fort Worth, TX 76106 WG InstallationInstructions
2
Model No. WGSH-6000 WGSH-7000 WGSH-7700 WGSH-9000 WGSH-7042 WGFD-7742 WGFD-9042 WGSH-6060 WGSH-7060 WGFD-7760 WGFD-9060
Input, BTUH 60,000 70,000 77,000 90,000 60,000 70,000 77,000 90,000 60,000 70,000 77,000 90,000
Output, BTUH 48,000 56,000 61,600 72,000 48,000 56,000 61,600 72,000 48,000 56,000 61,600 72,000
AFUE, % 80 80 80 80 80 80 80 80 80 80 80 80
With A-Coil Cabinet YES YES YES YES YES YES YES YES YES YES YES YES
Ignition Type Auto-Elect Auto-Elect Auto-Elect Auto-elect Auto-Elect Auto-Elect Auto-Elect Auto-elect Auto-Elect Auto-Elect Auto-Elect Auto-elect
Air Temperature Rise, Range - F 40-70 40-70 40-70 45-75 40-70 40-70 40-70 45-75 40-70 40-70 40-70 45-75
Designed Max Outlet Air Temp-F 170 170 170 175 170 170 170 175 170 170 170 175
Natural Gas Orifice Size 27 22 19 17 27 22 19 17 27 22 19 17
Propane (LP) Gas Orifice Size 44 42 41 37 44 42 41 37 44 42 41 37
Blower-Heat or Heat/Cool
Max. External SP (Duct), In. W.C.
Fuel
High Alitiude
Furnace Flue Pipe
Gas Connection
Electric Service
Fuse or Circuit Breaker
Thermostat Circuit
Filters
10 X 8, 1/3 HP, 3 SPD
10 X 8, 3/4 HP, 4 SPD
10 X 8, 1/4 HP, 2 SPD
0.3
Natural Gas (Factory Equipped) - LP Orifice Furnished
24 VAC, 60 Hz, 40VA
2 - 16" X 20" X 1"
For elevations above 2,000 feet, reduce input 4% for each 1,000 ft. elevation above sea level
Must Use RJS Roof Jack for Sloped Roof or RJF Roof Jack for Flat Roof
1/2" FPT
115 VAC, 60 Hz, 1 PH
15 Amp
80 AFUE - AUTOMATIC HOT SURFACE IGNITION
PRODUCT CODE
ACCESSORIES
PART NO. DESCRIPTION NOTES
90-RJF1729-AL Body, Roof Jack, Gas-FLAT Height 94 1/2 X 106 1/2
90-RJF2551-AL Body, Roof Jack, Gas-FLAT Height 102 1/2 X 128 1/2
90-RJS1729-AL Body, Roof Jack, Gas-SLOPE 3/12 Height 94 1/2 X 106 1/2
90-RJS2551-AL Body, Roof Jack, Gas-SLOPE 3/12 Height 102 1/2 X 128 1/2
90-RJS3868-AL Body, Roof Jack, Gas-SLOPE 3/12 Height 115 1/2 X 145 1/2
90-RJS6399-AL Body, Roof Jack, Gas-SLOPE 3/12 Height 140 1/2 X 176 1/2
90-RJCRWN-AL Crown, Roof Jack, Gas Use w/ Gas Roof Jack Body
90-TRN-RNG Ceiling Trim Ring, Roof Jack Trim out to inside RJ - Pipe
RJTRC Kit, Transit - Roof Jack -- Cap & Label For transport-Remove on site
90-OUTXT16-AL
Roof Jack Outdoor Extension - Gas 16" Extend pipes / crown - 16 in.
90-INXST10-AL Roof Jack Indoor Extension - Gas 10" Extend pipes / crown - 10 in.
90-RJS56 5-6/ 12 Slope, Roof Saddle Adapter Add to RJS 3/12 Roof Jack
90-DCU0-01 86AA0013 Duct Conn + 87FB0005 Flr Base Floor to Duck 1 in. - 4 in.
90-DCU0-02 86AA0014 Duct Conn + 87FB0005 Flr Base Floor to Duck 6 in. - 8 in. STD
90-DCU0-03 86AA0015 Duct Conn + 87FB0005 Flr Base Floor to Duck 8 in. - 12 in.
90-CABEXT4 White, Top, Cabinet Extender Plate Fill alcove 76" top opening
W G F D -60 42
Winchester Gas
F = Furnace H = Heating Only Up To Number of
S = Short D - Downflow Tons of Cooling
Heating
Input
WGSH-6042

Winchester by Mortex Products Inc. / Fort Worth, TX 76106 WG InstallationInstructions
WG Series Gas Furnace Installation Instructions
3
• ELECTRIC POWER - turn o all electrical power to
furnace before performing any maintenance or service
on unit. Failure to take this precaution may result in
personal injury due to electrical shock.
• SERVICE - a qualified service technician should
service this unit. Fuel burning appliances can generate
toxic flue products. Modification of the appliance can
cause carbon monoxide in deadly amounts. To prevent
a safety hazard, maintain this appliance in a safe
operating manner and do not modify.
• DO NOT modify vent or operate the unit with a
blocked vent or inlet air pipe.
• DO NOT re-drill a burner orifice. If the orifice size
must be changed, use only a new orifice.
• DO NOT use matches, lighters, candles, or other
sources of open flame to check for gas leaks.
• PROPER maintenance for this unit requires certain
mechanical skills and tools. If you are at all uncertain,
contact your Heating Service Co. for maintenance and
service.
• CONSULT with a service technician for any
problems or questions you may have pertaining to this
appliance.
• ALWAYS inspect the appliance before starting a
new heating season, paying special attention to vent
pipes and fuel lines.
NOTE:The words “Shall” or “Must” indicate a requirement,
which is essential for satisfactory and safe furnace
performance.
The words “Should” or “May” indicate a
recommendation which may be helpful or enhance
performance.
INSTALLATION STANDARDS
CODE COMPLIANCE
Theinstaller shall become familiar with and follow all
local codes and regulations which govern the installation
of this furnace. Where applicable, local codes may take
precedence.
• Federal Manufactured Home Construction and Safety
Standards – HUD Title 24, Part 3280.
• National Fuel Gas Code – ANSI-Z223.1/NFPA-54
• Unitelectricalwiringand grounding shall comply with
National Electrical Code – ANSI/NFPA-70
• “Manufactured Housing” – NFPA-501 and Fire Safety
Criteriafor Mobile Home Installations – NFPA 501A
• “Recreational Vehicles” – ANSI – 119/NFPA – 501C
HIGH ALTITUDE INSTALLATION
For elevations above 2,000 feet derate furnace input
4% for each 1,000 feet of elevation abovesealevel.
Furnace derationis accomplishedby reducing the
burner orice size. See DERATING CHART for orice
size and CONVERSION INSTRUCTIONS, Page 11.
INSTALLATION CLEARANCES
These furnaces are design certied for the following
minimum clearances from combustible materials in
alcove or closeinstallations.
Top....................................................................................6 in.
Sides.................................................................................0 in.
Back...................................................................................0 in.
Alcove-front of furnace............................................18 in.
Closet-front of furnace...............................................6in.
Duct..................................................................................0 in.
Vent/Roof Jack..............................................................0 in.
* If thereturn air opening is below the top of the
furnace, clearance to the side or rear shall be 6”.
** See Return Air for clearances less than 6”.
Locate furnace to ensureadequate room for service
access to all vent connections, controls and the heat
exchanger. A front clearance of 18” minimum (24”
recommended) shall be provided by a closet door or
spacing away from a facing wall or partition.
For installation on combustibleooring (except
carpeting) using manufacturers supplied oor baseP/N
87FB0005 and duct Connector Series P/N86AA001,
includedin 90-DCU0-01/03kits.

Winchester Gas Furnace Installation Instructions
Winchester by MortexProducts Inc. / Fort Worth, TX 76106 WG InstallationInstructions
4
RETURN AIR
ALCOVE INSTRUCTION
Thefurnace may be installed free standing or in an
alcove with a free owof air back to thefurnace. A
minimum of 18” shall be provided at the front for return
air and service access.
CLOSET INSTALLATION – 6 in.
Note: If return air is througha side wall,there must be a
minimum of 6-in. clearance from side wall to furnace in
addition to 6-in. minimum clearance from inside of closet
door to front of furnace.
If a louvered door complying with the minimum air
requirements is used, thefront clearancemy be reduced
to 1”.
CLOSET INSTALLATIONS
Additional Requirements:
Concerningunder oor or ceiling return air systems, the
following item (1 – 10) must be adhered to:
1. The return-air opening into the closet,regardless of
location, is to be sized not less than specied on the
appliance rating plate.
2.If the return-air opening is locatedinthe oor of the
closet (versus the vertical front or side wall), the
opening is to be providedwithmeans to prevent its
inadvertent closure by a at object placedover the
opening.
3. The cross-sectional areaof thereturn system (when
located in theoor or ceiling of the manufactured
home) leading into thecloset is to benot less than
that of the opening speciedonthe appliances
rating plate.
4. The total free area of openings inthe oor or ceiling
registers serving thereturn-air duct system is tobe
not less than 150% of the size opening specied on
the appliance rating plate. At least one such register
is to be locatedwhere the likelihood of its being
covered by carpeting, boxes, and other objects is
minimized.
5. Materials located in the return duct system have a
ame spread classicationof 200 or less.
6. Non-combustible pans having one-inch upturned
anges arelocated beneath openings inthe oor
return duct system.
7. Wiring materials located in the return duct system
conform to Article 300-22 (B&C) of the National
ElectricCode, ANSI / NFPA-70.
8. Gas piping is not runin or through the return duct
system.
9. The negative pressure inthe closet, as determined by
test with the air-circulating fan operating at high
heating speed and the closet door closed, is to be
not morenegative thanminus 0.05-inch water
column.
10.For oor return systems, the manufactured home
manufacturer or installer shall afx aprominent
warning where it is easily read when the closet door
is open.
HAZARD OF ASPHYXIATION
DO NOT COVER OR RESTRICT
FLOOR OPENING

Winchester by Mortex Products Inc. / Fort Worth, TX 76106 WG InstallationInstructions
Winchester Gas Furnace Installation Instructions
5

Winchester Gas Furnace Installation Instructions
Winchester by MortexProducts Inc. / Fort Worth, TX 76106 WG InstallationInstructions
6
FIG. E - Duct Connector
90-DCU0-01 - 1” - 4”
90-DCU0-01 - 6” - 8”
90-DCU0-01 - 8” - 12”
FIG. E - Duct Connector
14 X 14

Winchester by Mortex Products Inc. / Fort Worth, TX 76106 WG InstallationInstructions
Winchester Gas Furnace Installation Instructions
INSTALL FURNACE
Prior to installing furnace, fuel andA/C lineopening
may be cut in. See Fig. D
1. Remove upper and lower furnace doors.
2. Slide furnace onto oor base andpush back until
cabinet is against rear ange of oor base.
3. Secure furnace to oor withfastners
such as screws at right and left front inside
corners of cabinet.
4. Attach pipe strap at top of furnace toalcove or
closet framing,or fasten through furnace front
edge cabinet sides to wood framing.
RJ - SERIES ROOF JACK
G18D’s are sealed combustion furnaces tested and
listed for use ONLY with RJ — Series Roof Jack Venting
System. Furnace exhaust gases vent outdoors through
theinner pipe of the RJ — Series “pipe-within-a-pipe”
vent system.The space between the outer and inner
pipes is used to bring in outside combustion air for the
burner.
7
Do notinstall furnacewith any other type of
venting system. A HAZARDOUS CONDITION MAY
RESULT.
FURNACE
W/COIL CASE
SIDE
VIEW
FURNACE
W/COIL CASE
SIDE
VIEW
56“
AA
COMBUSTION AIR
COMBUSTION AIR
COMBUSTION AIR
COMBUSTION AIR
EXHAUST GASES
EXHAUST GASES
WARM AIR DUCTDUCT CONNECTOR
WARM AIR DUCT DUCT CONNECTOR
FLOOR FLOOR
FLOOR PLATE FLOOR PLATE
THIS JOINT MAY BE
ABOVE CEILING
17 1/2”
19 1/2”
3/12 PITCH ROOF FLAT-BOW RAFTER ROOF
FURNACE SERIES FURNACE SERIES
WGSH, 56" H WGFD, 77 1/2" H
PART NO. TELESCOPING FOR: FLAT OR "A" "A"
ROOF JACK BODY RANGE SLOPED ROOF ADJUSTABLE HEIGHT ADJUSTABLE HEIGHT
90-RJF1729-AL 17" - 29" FLAT 73" - 85" 94 1/2" - 106 1/2"
90-RJF2551-AL 25" - 51" FLAT 81" - 107" 102 1/2" - 128 1/2"
90-RJS1729-AL 17" - 29" 3/12 73" - 85" 94 1/2" - 106 1/2"
90-RJS2551-AL 25" - 51" 3/12 81" - 107" 102 1/2" - 128 1/2"
90-RJS3868-AL 38" - 68" 3/12 94" - 124" 115 1/2" - 145 1/2"
90-RJS6399-AL 63" - 99" 3/12 119" - 155" 140 1/2 - 176 1/2"
PART NO. MUST USE
ROOF JACK CROWN WITH:
90-RJCRWN-AL ROOF JACK BODY
THE SEALED COMBUSTION VENT SYSTEM CONSISTS OF:
ROOF JACK BODY AND ROOF JACK CROWN
or
77 1/2”
56“
or
77 1/2”

Winchester Gas Furnace Installation Instructions
Winchester by MortexProducts Inc. / Fort Worth, TX 76106 WG InstallationInstructions
CUTTING ROOF JACK OPENING
A properinstallation of the roof jack requires that
openings in roof and ceiling be on thesame vertical
centerline as the furnace ue collar. SeeFIG. 1
Mark the center point on the ceiling and scribe a4”
radius (8” diameter) around this mark. If furnace is in
place during this step, cover thefurnace and ue
opening toprevent debris from entering ue.
INSTALLING ROOF JACK
Theroof jack body should besecured to the furnace
before the roof ashing is secured to theroof.
1. Insert roof jack body into opening inthe roof.
2. From above, center the roof jack body aligning with
the furnace collar.
3. From inside the home, pull down4” Due
pipe seating the pipe fully and rmly over the
furnace ue collar.
4. Next pull down the 7” D combustion air pipe
seating it over the mating furnace collar. Rotatethe
combustion air pipe lining up to the screw hole on
the 7” collar.
5. Check and makesure the combustion air pipe is
fully seated . Then drive a # 10 sheet metal screw,
attaching pipe rmly to furnace collar.
6. Install optional ceiling trim ring, 90-TRM-RNG.
7. On the roof, seal under theroof jack ashing with
roong tar.
8. Drive nails or screws through theashing ontothe
roof surface about 1– 11/2” apart. Apply Tar again
to ensure a leak tight joint.
9. Install roof jack crown and fasten to roof jack body
with three (3) screws (provided) using pre-punched
holes.
INSTALLATION IN SNOW REGIONS
When thecombustion air inlet to the roof jack is blocked
with snow, the furnace will not operate properly due to
thedepleted combustion air supply.
Therefore, if thefurnace will be located in regions where
snow accumulationon the roof exceeds 7” or in H.U.D.
Snow Load Zones, a roofjackextension – Part No.
90-OUTXT16-ALis recommended.
ROOF JACK ON HI-PITCH ROOF
To install the RJS (3/12) Series Roof Jack on roofs which
have a slopebetween4.5/12– 6/12, install a Part No.
90-RJS56Roof Saddle, FIG. J. The combined assembly
of the RJS Roof Jack and Roof Saddlewill conform to the
higher roof pitch. If roof pitch is greater than 6/12, eld
fabricate a suitable adapter, or consult withfactory.
8

Winchester by Mortex Products Inc. / Fort Worth, TX 76106 WG InstallationInstructions
Winchester Gas Furnace Installation Instructions
CONNECT POWER SUPPLY
1. Remove the furnace control panel cover.
2. Insert 115 V wiring through astrain relief bushing on
the left side of thefurnace.
3. Connect the HOT wire to the black pigtail lead;
connect the NEUTRAL wire totheWHITE pigtail
lead. Secure the connections withsuitable wire nuts
and wrap with electrical tape.Refer to Wiring
Diagram on Pg.12for connections.
4. Connect the GROUND wire to a grounding screw in
the control box.
5. Reinstall and securethe control box cover with
screws.
To avoid electric shock, personel injury, or
death, turn othe power at the disconnect
or the main service panel before making
any electrical connections.
NOTE: The use of 18-gaugewire is highly
recommended to carry thethermostat load. Use of
smaller conductors risks operational problems caused by
loose or broken conductors or wire that is toosmall to
carry the load. Any such problems arethe responsibility
of the installer.
With conductors smaller than 18-gauge, observe the
following guidelines.
Maximum Thermostat wire
length (furnace to thermostat) Thermostat wire gauge
0–45 feet 22
0–70 feet 20
9
WALL THERMOSTAT
Thelocation of the wall thermostat is important,as it
must sensethe desiredtemperature of theentire
conditioned space. Choosea location 4–5 feet above
theoor, preferably on an inside wall in anarea with
good aircirculation. Stay away from lamps and air
registers and do not install behinda door. Choose a
locationwherethe temerature will be reasonbly
representative of other living areas the thermostat is
controlling.
CONNECT THERMOSTAT WIRES
When installing a furnace with acooling coil
compartment, use of a ve-connector thermostat cableis
recommended. This will allow easy installationof an air
conditioning system at a later date.
1. Insert 24V wires through the small plastic bushing on
the left side of thefurnace.
2. Connect low voltage wires to the color coded low
voltage pigtails at the of thecontrol panel.
3. Connect low voltage wires to the wall thermostat.
GAS PIPING
Supply piping must be sized inaccordance with
recommendations found in National Fuel Gas Code
ANSI Z223.1/NFPA-54. In addition materials used in
manufactured homes must comply with requirements
contained in HUD Title 24, Section 3280.705 as well as
A119.2 for recreational vehicles.
SeeChart in this manual for minimum sizes for NAT and
LP pipe and tubing serving the furnace only.
NOTE: The gas inlet onthe gas control valve is 1/2-
14NPT. The gas line may be installed through trhe
bottom casing or on left or right side of furnace.
Take care whenconnecting the gas line to the
furnace gas valve. Use suitable wrenches to
support the gas valve when tighting ttings to
prevent mis-alignment of the attched burner orice.
Do not damage the gas valve as improper heating,
explosion, reor asphyxiation may result.
Do not use matches, lighters, candles or other open
ame to check for leaks. Use soap or water solution
or a leak detector.
Do not test thefuel system at more than 14” W.C.
pressureonce furnace has been connected to the
gas line. Over pressure may void the warranty and
damage the valve which could cause anexplosion,
reor asphyxiation.

Winchester Gas Furnace Installation Instructions
Winchester by MortexProducts Inc. / Fort Worth, TX 76106 WG InstallationInstructions
MODEL TYPE LENGTH PIPE TUBING
MGD OF SIZE SIZE
GAS (FT.) (IN.) (IN. OD)
to 20 1/2 5/8
Natural to 60 1/2 -
60 to 70 - 3/4
to 40 1/2 -
Propane to 70 - 5/8
to 80 1/2 -
to 20 - 5/8
to 50 1/2 -
Natural to 60 - 3/4
70 to 80 3/4 -
to 30 1/2 -
Propane to 60 - 5/8
to 80 1/2 -
to 20 - 5/8
to 50 1/2 -
Natural to 60 - 3/4
77 to 80 3/4 -
to 30 1/2 -
Propane to 60 - 5/8
to 80 1/2 -
to 40 1/2 3/4
Natural to 50 - 3/4
90 to 30 1/2 -
Propane to 40 - 5/8
to 60 1/2 3/4
GAS PIPE AND TUBING–MIN SIZES
GAS PRESSURE
TYPE G AS INLETGA S PRESSURE
PRESSURE TO BURNER
Natural 7” W.C. 3-1/2” W.C.
Propane 11” W.C. 10” W.C.
When converting gas control valvefrom or to
Propane gas, it will be necessary to change the
main burner orice to prevent anunderred or
overredcondition . The pressure regulator on the
gas control valvemust also be converted.See label
on lower furnacecompartment for full instructions.
If the gas input to the furnace is too high due to
excessive pressure, wrong size burner orice, no
orice, high altitude, etc., the burner ame will be
sooty especially with Propane gas. This type of
furnace operation can produce carbon monoxide,
which could result in unsafe operation, explosion,
and/or re andasphyxiation.
Operation — Once system gas piping has been checked
for leaks, operation the furnace using the lighting
instructions on the front furance panel, and:
1. Observe burner throughviewport andmake sure it
ignites.Thecolor of the ame whenoperating on
natural gas will burn blue with yellowtips. On
Propane,a signicantly yellow ame can be
expected. If ame is not the proper color call a
qualiedservicetechnician for service.
2. Let furnace operate until blower cycles on. This takes
about 2 to 2 1/2 minutes.
3. Turn thermostat down.
4. Observe burner to makesure it has shut o.
5. Let furnace cool and blower cycle o.
10
Should overheang occur, or the gas supply fail
to shut off, shut offthe manual gas valve to the
furnace and allow the indoor blower to run with
the gas turned offunl the furnace cools down
and the blower shuts offbefore shung off
electrical supply.

Winchester by MortexProducts Inc. / Fort Worth, TX 76106WG InstallationInstructions
11
NATURAL GAS
ELEVATION 60,000 BTU FURNACE 70,000 BTU FURNACE 77,000 BTU FURNACE 90,000 BTU FURNACE
PART NO ORIF DIA DRILL SIZE PART NO ORIF DIA DRILL SIZE PART NO ORIF DIA DRILL SIZE PART NO ORIF DIA DRILL SIZE
SEA LEVEL 75AG-144 0.144 27 75AG-157 0.157 22 75AG-166 0.166 19 75AG-173 0.173 17
2000 75AG-1405 0.1405 28 75AG-154 0.154 23 75AG-161 0.161 20 75AG-1695 0.1695 18
3000 75AG-1405 0.1405 28 75AG-152 0.152 24 75AG-161 0.161 20 75AG-166 0.166 19
4000 75AG-136 0.136 29 75AG-1495 0.1495 25 75AG-159 0.159 21 75AG-166 0.166 19
5000 75AG-136 0.136 29 75AG-147 0.147 26 75AG-157 0.157 22 75AG-161 0.161 20
6000 75AG-136 0.136 29 75AG-144 0.144 27 75AG-154 0.154 23 75AG-159 0.159 21
7000 75AG-1285 0.1285 30 75AG-144 0.144 27 75AG-1495 0.1495 25 75AG-157 0.157 22
8000 75AG-1285 0.1285 30 75AG-1405 0.1405 28 75AG-147 0.147 26 75AG-154 0.154 23
9000 75AG-1285 0.1285 30 75AG-136 0.136 29 75AG-144 0.144 27 75AG-152 0.152 24
10000 75AG-120 0.120 31 75AG-136 0.136 29 75AG-1405 0.1405 28 75AG-147 0.147 26
PROPANE (LP) GAS
ELEVATION 60,000 BTU FURNACE 70,000 BTU FURNACE 77,000 BTU FURNACE 90,000 BTU FURNACE
PART NO ORIF DIA DRILL SIZE PART NO ORIF DIA DRILL SIZE PART NO ORIF DIA DRILL SIZE PART NO ORIF DIA DRILL SIZE
SEA LEVEL 75AG-086 0.086 44 75AG-0935 0.0935 42 75AG-096 0.096 41 75AG-104 0.104 37
2000 75AG-082 0.082 45 75AG-0935 0.0935 42 75AG-0935 0.0935 42 75AG-1015 0.1015 38
3000 75AG-082 0.082 45 75AG-089 0.089 43 75AG-0935 0.0935 42 75AG-0995 0.0995 39
4000 75AG-082 0.082 45 75AG-089 0.089 43 75AG-0935 0.0935 42 75AG-0995 0.0995 39
5000 75AG-081 0.081 46 75AG-089 0.089 43 75AG-089 0.089 43 75AG-098 0.098 40
6000 75AG-0785 0.0785 47 75AG-086 0.086 44 75AG-089 0.089 43 75AG-096 0.096 41
7000 75AG-0785 0.0785 47 75AG-086 0.086 44 75AG-086 0.086 44 75AG-0935 0.0935 42
8000 75AG-076 0.076 48 75AG-082 0.082 45 75AG-086 0.086 44 75AG-0935 0.0935 42
HIGH ALTITUDE DERATE CHART - MAIN BURNER ORIFICE SIZE
Reference: NFPA No. 54, ANSI Z 223.1National Fuel Gas Code
Tableshows 4% Input Reduction per 1,000 feet elevation
For canadian High Alitude (2,000-4,500 feet),reduce gas pressure to burner manifold (manifold Ps.) to 3.0” W.C. for Natural Gas and 9.0 W.C. for LP (Propane) Gas
Winchester Gas FurnaceInstallation Instructions
KIT PART NUMBER ALTITUDE FURNACE INPUT
G18HA0601 0 - 5000 FT 60,000
G18HA0602 6,000 - 10,000 FT 60,000
G18HA0701 0 - 5000 FT 70,000
G18HA0702 6,000 - 10,000 FT 70,000
G18HA0771 0 - 5000 FT 77,000
G18HA0772 6,000 - 10,000 FT 77,000
G18HA0901 0 - 5000 FT 90,000
G18HA0902 6,000 - 10,000 FT 90,000
HIGH ALTITUDE ORIFICE CONVERSION KITS

Winchester by Mortex Products Inc. / Fort Worth, TX 76106WG InstallationInstructions
Winchester Gas FurnaceInstallation Instructions
IF FURNACE FAILS TO OPERATE
PROPERLY:
1. Check setting on wall thermostat andthe position of
the HEAT-COOL switch if air conditioning is installed.
2. Check to make surethat electrical power is on at the
furnace and the furnce breaker has not tripped.
3. Make sure that thelters areclean and return grills
are not obstructed. The supply registers shouldbe
open.
12
4. Be sure that thefurnace ue and inlet piping has not
been obstructed and are open. If the cause for failure
is not obvious, do not attempt to service the furnace
yourself. Call a qualied service agency or the gas
supplier.

Winchester Gas Furnace Installation Instructions
Winchester by MortexProducts Inc. / Fort Worth, TX 76106 WG InstallationInstructions
13
WG BLOWER PERFORMANCE CHART
ESP INCHES WCDUCT
SPD TAP 0.1 0.2 0.3 0.4 0.5
H2/10 OR (00) BLOWER- 10 X 8 WHEEL 1/4 HP2 SPD MOTOR
CFM-NO-COIL
LO 940 885 835 780 725
HI 1225 1165 1110 1030 970
CFM-WITH-COIL
LO 865 825 775 730 670
HI 1105 1050 1010 930 870
A3/12 OR (42) BLOWER- 10 X 8 WHEEL 1/3 HP 3 SPD MOTOR
(Accessory PN 87-1008-312A1)
CFM-NO-COIL
LO 980 950 910 875 825
MED 1220 1170 1120 1065 1015
HI 1460 1400 1340 1270 1195
CFM-WITH-COIL
LO 945 905 865 815 775
MED 1130 1085 1030 970 905
HI 1300 1240 1180 1105 1085
A4/16 OR (60) BLOWER- 10 X 8 WHEEL 3/4 HP 4 SPD MOTOR
(Accessory PN 87-1008-316A1)
CFM-NO-COIL
LO 995 960 915 875 825
MED 1205 1165 1130 1090 1045
MED-HI 1470 1425 1385 1345 1310
HI 1810 1765 1720 1680 1635
CFM-WITH-COIL
LO 950 905 885 835 790
MED 1145 1115 1080 1035 1000
MED-HI 1375 1345 1315 1280 1245
HI 1700 1660 1620 1575 1540

Winchester by Mortex Products Inc. / Fort Worth, TX 76106WG InstallationInstructions
14
WIRING DIAGRAM,WG Series
Winchester Gas Furnace Installation Instructions
HEAT ONLY MODELS
UTEC & TI BOARD WIRING DIAGRAM
FLASH CODES
1 FLASH - IGNITION FAILURE
2 FLASHES - STEADY ON 3 FLASHES - 4 FLASHES - 5 FLASHES -
NORMAL OPERATION COMBUSTION AIR SWITCH FAILED TO CLOSE COMBUSTION AIR SWITCH STUCK CLOSED LIMIT SWITCH OPEN GAS VALVE ENERGIZED WITH NO CALL FOR HEATY 6 FLASHES -
REVERSED POLARITY
BLOWER MOTOR
BLU - MED
ORG - MED - LOW

Winchester by Mortex Products Inc. / Fort Worth, TX 76106WG InstallationInstructions
15
Winchester Gas Furnace Installation Instructions
UTEC & TI BOARD WIRING DIAGRAM
FLASH CODES
1 FLASH - IGNITION FAILURE
2 FLASHES - STEADY ON 3 FLASHES - 4 FLASHES - 5 FLASHES -
NORMAL OPERATION COMBUSTION AIR SWITCH FAILED TO CLOSE COMBUSTION AIR SWITCH STUCK CLOSED LIMIT SWITCH OPEN GAS VALVE ENERGIZED WITH NO CALL FOR HEATY 6 FLASHES -
REVERSED POLARITY
BLOWER MOTOR
BLU - MED
ORG - MED - LOW
A/C READY MODELS
61GF0054

Winchester by Mortex Products Inc. / Fort Worth, TX 76106WG InstallationInstructions
16
Winchester Gas Furnace Installation Instructions
COROLA BOARD WIRING DIAGRAM
FLASH CODES
1 FLASH - IGNITION FAILURE
2 FLASHES - STEADY ON 3 FLASHES - 4 FLASHES - 5 FLASHES -
NORMAL OPERATION COMBUSTION AIR SWITCH FAILED TO CLOSE COMBUSTION AIR SWITCH STUCK CLOSED LIMIT SWITCH OPEN GAS VALVE ENERGIZED WITH NO CALL FOR HEATY 6 FLASHES -
REVERSED POLARITY
BLOWER MOTOR
BLU - MED
ORG - MED - LOW