Nordyne E2 Series Original instructions

IMPORTANT: Read this owner information
to become familiar with the capabilities and
use of your heating appliance. Keep this
literaturewhereyouwillhaveeasyaccessto
it in the future. If a problem occurs, check
the instructions and follow recommenda-
tions given. If these suggestions don’t
eliminate your problem, call the appropriate
NORDYNE distributor. A distributor service
list is included with this appliance.
!WARNING:
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinityofthisoranyotherappliance.
Improperinstallation,adjustment,
alteration,serviceormaintenancecan
cause injury, property damage, or
death. Refer to this manual. For
assistance or additional information
consult a qualified dealer or service
agency. To avoid personal injury or
property damage, ask a service
technician to inspect the furnace and
to replace any part of the control
system which has been under water.
SECTION 1. OWNER
INFORMATION
OPERATING INSTRUCTIONS
Before Operating System
Before operating your heating/cooling system
(see Figure 1), make sure that:
• Control panel covers are closed.
• Blower and/or relay control plugs are
plugged in.
• Fan switch is set to “AUTO” (E2EH units
only).
• Circuit breakers are in “ON” position.
!CAUTION:
No user serviceable parts inside
control panel. DO NOT OPEN.
• All power supply switches for furnace and
outside unit (if installed) are turned on.
• Furnace door is closed and properly latched.
Refer to the owner’s manual supplied with the
optional heat pump or air conditioner for further
information.
Owners Manual/Installation Instructions
E2 Series
(Air Conditioner/Heat Pump Air Handler)
Downflow, Upflow Electric Furnaces

2
Indoor Coil
(optional)
Coil Air Filters
(used with indoor coil)
Blower Selector
Switch (EH only)
Furnace Air Filter
(NOT used with
coil air filters)
Control Panel
Cover (left)
Data Label
Circuit Breakers
Control Panel Cover (right)
A/C or H/P
Relay Box
(optional)
Blower
E 2 EB - 010 H - A
Product Type
E - Electric Furnace
Generation
2 - Second Series
Product Identifier
EH - Heat Only
EB - A/C Blower Equipped
Options
A - A/C Ready
Electrical Code
H - 240-1-60
Primary Capacity
010 - 10 kw 012 - 12 kw
015 - 15 kw 017 - 17 kw
020 - 20 kw 023 - 23 kw
Figure 1. Furnace Parts Identification
Model Identification
10 20 30
50 60 70 80 90
SYSTEM
HEAT OFF COOL VENTILATE ON AUTO
Temperature Selector
Temperature
Scales
System Switch
(optional sub-base)
Fan Switch
(optional sub-base)

3
!CAUTION:
For optional A/C or H/P systems,
always wait at least five minutes after
thesystemshutsoffbeforerestarting
the system. Observe this procedure
when operating the system per the
following instructions.
To Operate System in Cooling
Mode
NOTE: The “FAN ON/FAN AUTO” (fan switch)
and “HEAT/OFF/COOL” (system switch) are
locatedeitheronyourthermostat(ifit’ssupplied
with a sub-base) or on the relay box added to
your furnace.
1. Make sure blower selector switch is on
“Auto.”
2. Set fan switch to “AUTO.”
3. Set system switch to “COOL.”
4. Set thermostat temperature selector to
desired comfort level.
To Operate System in Heating
Mode
1. Make sure blower selector switch is on
“Auto.”
2. Set fan switch to “AUTO.”
3. Set system switch to “HEAT.”
4. Setthermostattemperatureselectorswitch
to desired comfort level.
NOTE: Allow at least one hour for the room
temperature to stabilize before you make a
second adjustment to the thermostat setting.
Once the desired comfort level is established,
make only small adjustments to the thermostat
setting to meet changing temperature condi-
tions.
To Operate Blower Continuously
1. Setblowerselectorswitch to “ON”forsum-
mer air circulation only (see Figure 1, Item
1), OR...
2. Ifthermostatisequippedwithoptionalheat-
ing/cooling sub-base or relay box (see
Figure 1), set fan switch to “ON.”
To Balance Air Distribution
1. On a typical day, set thermostat selector to
desired comfort level and operate system
forseveralhourswith allairregistersopen.
2. With system on, check temperature in all
rooms.
3. Partially close registers in rooms that are
too warm (in heating mode) or too cool (in
cooling mode) and in rooms that are infre-
quently occupied.
4. Re-check room temperature and adjust
registers as needed.
To Shut Off System
1. Make sure blower selector switch is on
“Auto”.
2. Setthermostattemperatureselectortolow-
est temperature setting, OR...
3. Forthermostatswithoptionalsub-base(see
Figure 1, Item 2) or for systems with relay
box, set system switch to “OFF.”
!WARNING:
To prevent hazard of electrical shock
and injury from moving parts, be
certain the thermostat is off and the
furnace circuit breaker(s) are in the
“OFF”positionbeforeservicing.Close
andproperlylatchtheouterdoorafter
doing the following recommended
maintenance.
MAINTENANCE INSTRUCTIONS
Regularly
NOTE: If a coil is installed, furnace filter is not
used.
1. Replace furnace air filter (see Figure 1),
OR...
2. Remove coil filters, wash, and allow to dry.
Re-install coil filters to original positions.
3. Vacuum or wipe clean interior of furnace
cabinet.
4. Cleanalllintanddust fromaroundfurnace.
Every Six Months
1. Vacuum or wipe away any dust or lint on
blower motor.
Before Each Heating Season
NOTE: If a coil is installed, furnace filter is not
used.
1. Replace furnace air filter (see Figure 1),
OR...
2. Remove coil filters, wash, and allow to dry.
Re-install coil filters to original positions.

4
3. Have a qualified serviceman inspect all
furnace components and field wiring and
clean and service heating system as
needed. If this furnace was installed with
aluminum power supply wiring, have ser-
vicemanperiodicallycheckallconnections
to prevent possible equipment failure and/
or fire hazard. Do not attempt any service
function yourself which requires opening
furnace control panel covers.
BEFORE YOU CALL A SERVICEMAN
1. Make sure thermostat temperature selec-
tor is set above room temperature for heat-
ing or below room temperature for cooling.
Ifthermostatisequippedwithheating/cool-
ing sub-base, make sure system switch
(see Figure 1, Item 2) is set to “HEAT” for
furnace operation or set to “COOL” for
optional air-conditioning operation.
2. Check main household service panel to
see if appropriate circuit disconnect(s) for
appliance power supply is on.
3. Refer to instructions under Before Operat-
ing System for pre-operation checks.
4. Refer to instructions under Before Each
Heating Season for maintenance proce-
dures and recommended service checks.
5. Refer to owner’s manual provided with
optional air conditioner or heat pump (if
installed) for service and maintenance.
NOTE: All servicing of this heating appliance
otherthanthenormalmaintenancedescribedin
this section must be done by authorized trained
service personnel. Do not open the control
panels (see Figure 1, Item 1) at any time.
Please specify the complete model and serial
numbers shown on the furnace data label (see
Figure 1, Item 1) for all warranty service and
when ordering replacement parts or optional
equipment. Refer to the replacement parts list
provided with the furnace for part numbers.
OPTIONAL AIR CONDITIONER
AND HEAT PUMP
Your E2 Series electric furnace is approved for
use with an optional central air conditioner or a
heat pump. To adapt this heating appliance to
a “total comfort system,” contact your nearest
NORDYNE distributor.
Optional air conditioners and heat pumps are
listed by Underwriters’ Laboratories (UL) or
Environmental Testing Laboratories (ETL) and
certified by ARI and the Canadian Standards
Association(CSA),orWarnockHerseyorETLC.
These cooling systems include energy-saving
components to provide maximum cooling per-
formance at electrical energy usage levels es-
tablished by federal standards. Refer to the
operation instruction label on your furnace for
theoptionalairconditioningequipmentapproved
for your heating appliance.
SECTION 2.
INSTALLER INFORMATION
GENERAL
These instructions and specifications are pri-
marily intended to assist qualified individuals
experienced in the proper installation of home
heating and air conditioning appliances. Some
local codes require licensed personnel for the
installation and service of this type of equip-
ment. Approved installation, operation, and
maintenance of this central heating system
appliancemustbe in accordance with the listed
specifications contained in these instructions
and other documents supplied with the furnace
and/oroptionalairconditioningequipment. Refer
tolocalauthoritieshavingjurisdictionforfurther
information.
Before beginning installation, read these in-
structions thoroughly. Follow all warnings and
cautions in the instructions and on the unit.
Improper installation, service adjustment, or
maintenance can cause explosion, fire, electri-
calshockorotherconditionswhichmayresultin
personal injury or property damage. Unless
otherwise noted in these instructions, use only
factory-authorized kits and accessories when
modifying this product.
Overview of E2 Furnace
E2E(-) Series electric furnaces are available in
two models. E2EH models are equipped with
the standard two-speed blower. E2EH models
canbeeasilyconvertedforusewithNORDYNE
split-system air conditioners and heat pumps.
E2EBmodelsareair-conditioningready;thatis,
they are equipped with a multi-speed (four-
speed)blower,blowerrelay,andcabinetinsula-
tion kit. See Table 3 for cooling and heat pump
availability with factory installed blower.

5
For typical non-ducted return air downflow
applications, an air-conditioner or heat-pump
coilcanbeinstalledbymountingthecoildirectly
ontopofthefurnacewithoutaddingsheetmetal
cavities or cutting and trimming wood panels.
Areturnairgrilleforclosetoralcoveinstallations
is available. For downflow alcove installations,
thegrille (withframeprovided)maybeattached
tothetopofthefurnaceandallpanelingandtrim
flushed to it. This installation provides an ac-
cess door for future installation of NORDYNE
air conditioning or heat pump coils on top of the
furnace.
Power entrance for all models may be through
the right side or through the bottom of the unit
(when viewing the unit in a downflow position).
UNIT CHECKOUT
Before installing this furnace:
1. Inspect unit for possible shipping damage.
If shipping damage is found, file claim with
transportation company.
2. Record furnace model number and serial
number (see furnace data label) for future
reference.
3. Carefullyreadall instructionssuppliedwith
optional equipment to be installed with
furnace.
CODES, SPECIFICATIONS, AND
REQUIREMENTS
Furnace Codes
Installationandwiring ofthisfurnace,as wellas
the design and construction of the home duct
system,mustbeinaccordancewithoneormore
of the following codes:
• HUD MANUFACTURED HOME CON-
STRUCTION AND SAFETY STANDARD
(Title 24, Part 3280)
• American National Standards (ANSI)
A119.11, C1-NFPA 7 (National Electrical
Code)
• CANADIANSTANDARDS(C.S.A.)Z240.6.1,
and Z240.9.1.
Table 1. Miscellaneous Listings & Installation Requirements
Listing agency(s) May vary by model, check the unit data label for applicable agency listing mark.
Approved Installation
Configurations
Approved for: single/multistory residential or
mobile/modular/manufactured structures. Upflow,
downflow, (freestanding/closet/alcove)
Accessibility for Servicing Minimum of 18" (46 cm) required in front of unit.
Minimum Clearance to
Combustibles 0" from all surfaces of furnace cabinet, ducts, optional coilhousing and plenum connector.
No separate subbase required for installations on
combustible flooring.
Minimum return air 200 in.
2
(1290 cm
2
) heating only*
opening required (total free
area) 235 in
2
(1516 cm
2
) A/C or H/P up to 4-ton installed.*
390 in.
2
(2516 cm
2
) A/C or H/P up to 5 ton installed.
*or return air grille and frame assembly
p/n 902989 or wall mount grille p/n 902999.
Return air grille Use return air
g
rille and frame assembly P/N 902989-
or equivalent for alcove installation.
(closet or alcove installation) Use wall mount return air grilled P/N 902999- or equivalent for closet installation.
155 in.
2
(1000 cm
2
) must be added for
5-ton A/C or H/P system.

6
All local codes having jurisdiction shall also
apply.
Air Duct Codes and Specifications
Air ducts must be installed in accordance with
National Fire Protection Association standards
NFPA 90A and NFPA 90B, these instructions,
and all applicable local codes.
• Materials: Air ducts must be aluminum, tin
plate, galvanized sheet steel, or other ap-
provedmaterialsfor outletorreturn airducts.
• Construction: Snap-Lock or Pittsburgh-Lock
seams are preferred. All other types of
seams must be made tight to prevent leak-
age.
• Sizing:Supplyductsystemmustbedesigned
for proper air distribution. Static pressure
measured externally to furnace shall not ex-
ceed static pressure rating listed on furnace
nameplate.
• Location of Openings: Duct system must be
designed so that no supply registers are
locatedinductsystemdirectlybelowfurnace.
Return Air Codes and
Requirements
Non-ducted return air systems may be used for
closet or alcove installations.
NOTE: Applicable installation codes may limit
the furnace to installation in a single-story resi-
dence only. Furnace installations other than
closet or alcove installations require ducted
return air systems.
Air return to the furnace must have a minimum
free area opening (see Table 1).
Acceptablefloor orceilingreturnairsystemsfor
closet installations with return air entering
through an opening in the closet floor or ceiling
must meet all of the following requirements:
• Return air opening into closet, regardless of
its location, must not be smaller than size
specified on unit data label.
• If located in floor of closet, return air opening
must be provided with means of preventing
its inadvertent closure by a flat object placed
over opening.
• Materials located in return air duct system
must have a flame-spread classification of
200 or less.
• Noncombustible pans having 1" upturned
flangesmustbe locatedbeneathopenings in
a floor-return duct system.
• Wiring materials located in return duct sys-
tem must conform to NEC Article 300-22(c).
• Gas piping must not run in or through return
air duct system.
• If return air opening is located below top of
furnace, a minimum clearance must be pro-
vided between opening and furnace (see
“Accessibility for servicing” in Table 1).
Closed-Off Space Requirements
Livingspacenotservedby, andclosedofffrom,
the return air ducts to the furnace by doors,
sliding partitions, and other means must be
provided with permanent, uncloseable open-
ings in the doors or partitions to allow air to
return to the furnace from all parts of the home.
Return air grilles, with a minimum open area of
one square inch for every five square feet of
livingspaceclosedofffromthefurnace,mustbe
provided in the door or room partition.
OPTIONAL EQUIPMENT
Contact your nearest NORDYNE distributor for
a complete list of electric furnace accessories.
Return Air Grille
A return air grille and frame assembly (see
Figure 2) is available for use in non-ducted
return air installations. In downflow alcove in-
stallations, the grille and frame assembly may
be mounted directly to the top of the furnace. In
closet installations, a wall mount grille is avail-
able for attachment to a door or wall.
Optional Automatic Furnace
Damper #901083 -
Furnace may (not required) be equipped with
the optional automatic damper when a pack-
aged air conditioner is installed and connected
to the warm air duct system. This damper pre-
vents cooled air from discharging through the
furnace cabinet, causing excessive cooling of
the immediate area. Refer to instructions sup-
plied with the damper for details.
Multi-Speed Blower Conversion
Package (4 or 5 ton):
Upgrade blower packages are available for
adding air conditioning or heat pump systems.
See furnace “Options and Compatibility” label
for systems available.

7
Table 2. Optional Air Conditioning and
Heat Pump Equipment
Figure 3. Optional Rear Mounting Plate
(P/N 389080)
3"
(76 mm)
20-1/8"
(511 mm)
11/16"
(17 mm)
Notes:
1) For A/C and H/P use.
2) Includes coil filters.
3) For upflow or downflow installations.
4) For upflow A/C or H/P installations (includes
one filter; use filter from furnace to
complete filtering system in this accessory).
5) Standard in EB models.
6Upflow Stand
Filters (one obtained
from furnace)
23 3/4" (603 mm)
20" (508 mm)
14"
(357 mm)
20" (508 mm)
Cabinet
Insulation
5Coil Cabinet
23 3/4" (603 mm)
29"
(737 mm)
NOTE: See Table 2 for descriptions
and notes
Figure 2. Optional Accessories
1
2
3
4
7
8
27"
(686 mm)
29"
(737 mm)
20"
(508 mm)
23 3/4"
(603 mm)
Item
Number
(See Fig. 1) Description
1 4-Speed Blower
4 Ton - See Notes: 1 & 5
5 Ton - See Note: 1
2 A.C./H.P. Relay Control
See Note: 1
3 Cabinet Insulation Kit
See Notes: 1 & 5
4 "A"-Coil Conversion Kit
See Note: 2
5 Coil Cabinet
See Note: 3
6UpflowStand
See Note: 4
7 A/C and H/P Indoor Coils
8 Return Air Grille and
Frame Assembly

8
Table 3. Unit Specifications
1. Heating output rated at listed voltage. For outputs at voltages other than
240V, multiply Btuh rating by the following factors: x 0.92 (230V), x 0.84
(220V), x 0.75 (208V)
2. Height is 56" with return air grille installed, 58" with coil cabinet and 72" with
coil cabinet and upflow stand.
3. The factory installed blower for the EH models can be replaced with a multi-
speedblower allowingtheunits toaccept upto4 or5 tonsofair conditioning
or heat pump.
4. The factory installed blower for the EB models can be replaced with a multi-
speed blower allowing the units to accept up to 5 tons of air conditioning or
heat pump.
Electric Furnace Models E2EH
010H 012H 015H 017H 020H 023H
Rated Heating Output, Btuh
(see note1) 35,000 41,000 53,000 57,000 70,000 75,000
Watts (Total kw, Heating Elements
and Blower) 10.4 12.0 15.4 16.6 20.4 22.0
Supply Voltage
Heating Elements, No.(Total kw) 2 (10.0) 2 (11.6) 3 (15.0) 3 (16.2) 4 (20.0) 4 (21.6)
Blower: Wheel Size 10.5" Dia., 8" Wide
Motor Speeds, H.P. Rating, Amps 2 Speed, 1/5 Hp, 2.0 Amps
Test ESP, in. w.c. Max
Optional Cooling Available with factory
installed blower 2.0 - 3.0 ton (see note 3)
Optional Heat Pump Available with
factory installed blower
2.0 - 3.0 ton (see note 3) n/a (see note 3)
Air Filter (Standard)
Furnace Dimensions Width - 20" (508 mm) Height
E2EB
010H 012H 015H 017H 020H 023H 023H 5 Ton
35,000 41,000 53,000 57,000 70,000 75,000 75,000
10.4 12.0 15.4 16.6 20.4 22.0 22.0
2 (10.0) 2 (11.6) 3 (15.0) 3 (16.2) 4 (20.0) 4 (21.6) 4 (21.6)
10.5" Dia., 8" Wide 11" Dia., 8" W
4 Speed, 1/3 Hp, 2.9 Amps 4 Spd, 3/4 Hp, 3.8 Amps
2.0 - 4.0 ton (see note 4) 2.0 - 5.0 Ton
2.0 - 4.0 ton (see note 4) 2.0 - 5.0 Ton
- 29" (737 mm) ( see note 2) Depth - 24-1/2" (623 mm)
240 Volts/60Hz/1-Phase
0.3
16" x 20" x 1" (nominal)

9
Blower Installation:
1. Turn off all electrical supply circuits to the
furnace at the main service panel.
2. Remove furnace front door and switch fur-
nace circuit breaker(s) to “OFF”.
3. Disconnect the motor plug from the control
panel receptacle.
4. Remove one screw from left side of blower
and three screws from right side of blower;
slide blower forward and remove.
5. Installnewblowerensuringthesideflanges
engageundersidemountingtabs(threeon
oneside,oneontheother)andthelongtab
in the rear.
6. Replace screws previously removed from
blower.
7. Switch circuit breaker(s) to “ON”, reinstall
furnace front door, and turn on electrical
supply circuits to the furnace.
Optional Plenum Connectors for
Downflow Systems
Plenumconnectorsarerecommendedforheated
air distribution in under-the-floor duct systems.
With this system, furnaces may be installed on
combustible flooring without a separate sub-
base. Also, the furnace rear mounting plate
(seeFigure3)suppliedwiththeplenumconnec-
tors is recommended for use with this type of
installation.
SELECTING PLENUM CONNECTOR
1. Determine depth of floor cavity from sur-
face of floor to top of supply air duct (see
Figure 4).
2. Select appropriate model from Table 4
whichmatchesX-dimensionof floor cavity.
To maximize air delivery, remove reducer
(C in Figure 4) to obtain largest open area
that will fit duct/floor construction.
NOTE: Plenum connectors may be
installed in any one of four positions.
TYPICAL INSTALLATION OF
DOWNFLOW SYSTEMS
The following steps describe installation in-
structions for an under-the-floor supply duct
system with a return air system that can be
either non-ducted or ducted. Plenum connec-
tors(Table4)arerecommendedforthisapplica-
tion.
NOTE: Before installing this furnace, consider
all clearances for the installation and future
servicing of the furnace. Refer to Table 1.
Return Air and Filtering Systems
Furnaces may be installed with non-ducted or
ducted return air. For non-ducted return air
systems, either the optional grille and frame
assembly or the optional wall mount grille is
recommended. For ducted return air systems
with air conditioners or heat pumps, either pro-
viding an access panel in the duct or using the
AB
19”
(483 mm)
19"
(483 mm)
TOP VIEW
X
Reducer
Felt Seal
Corner
Spacers
C
OPENING TO DUCT
A= 13-1/4" (337 mm)
B= 10-3/4" (274 mm)
WITH PLATE (C) REMOVED
OPENING BECOMES
13-1/4” x 13-1/4”
Figure 4. Plenum Connector Selection
x
SUPPLY AIR DUCT
FLOOR CAVITY
If “X” Use Plenum
floor cavity is: Connector Model
English Metric (mm) Order No.
7/8" 22 901987
2" 51 901988
4 1/4" 108 901989
6 1/4" 159 901990
8 1/4" 210 901991
10 1/4" 260 901992
12 1/4" 311 901993
Table 4. Floor Cavity Sizes

10
Frame
Top of
Furnace
Fasteners (4)
Grille Furnace Filter
(not used with
A/C or H/P
)
optionalcoilcabinetisrecommended.Theduct
systemmustbeproperlysizedsoastoaccount
for any additional external static pressure pro-
duced from the chosen filtering method.
NOTE: Refer to the instructions supplied with
any additional accessories for further installa-
tion details.
Filtering Methods - Non-Ducted Return Air
1. Without A/C or H/P uncased coil:
- use the filter supplied with the furnace;
ensure that the filter is installed mat side
down between the filter retainer and fur-
nace top (see Figure 5).
2. With A/C or H/P uncased coil:
- use the optional coil filters; the filter sup-
plied with the furnace is not used; RE-
MOVE AND DISCARD THIS FILTER.
3. With optional coil housing:
- see coil cabinet instructions for specific
filtering methods.
Filtering Methods - Ducted Return Air
1. Without optional coil housing:
- install a filter with a minimum unrestricted
medium area of 324 square inches in the
duct above the coil that is accessible for
monthlycleaningorreplacement by home-
owner.
2. With optional coil housing:
-install a filter with a minimum unrestricted
medium area of 324 square inches in the
duct above the coil that is accessible for
monthlycleaningorreplacement by home-
owner.
Figure 5. Grille Support Frame and Grille
Assembly
2-3/8" MIN
(60 mm)
"
6-1/4
23-3/4"
(603 mm)
20"
3/4"
"10
14-1/2"
(368 mm)
3" (76 mm)
"4-1/4 "5 "3-3/8
REAR WALL OF ENCLOSURE
Furnace Outer
Door
OptionaL
Supply Wire
Entrance
For
Optional
A/C Or H/P
Center Line
17"
(432 mm)
14-1/2"
(368 mm)
16-5/8"
(422 mm)
(254 mm)
(86 mm)
(127 mm)
(108 mm)
(159 mm)
(19 mm)
(508 mm)
3-3/4"
(95 mm)
Furnace
Outline
Figure 6. Downflow Floor Cutout Locations (nominal dimensions)

11
Rear Wall
Cut-out Area
Optional Supply
Entrance
Mounting
Plate
Floor
Opening
Refrigerant
Line
Opening
Supply Air Duct
Cut Duct Opening
1/16th. Larger Than
Plenum Connector
PreparingFloorOpening(s)
1. Mark floor opening(s) as shown in Figure
6.Provideminimumclearancesatrearand
rightsidewallsofclosetoralcoveforinstal-
lation of furnace and wiring.
2. Cutflooropeningonoutsideedgeofmarked
line so that opening is slightly larger than
area marked.
3. Additionalprovisionsmaybenecessaryfor
optional air conditioning or heat pump if
refrigerant lines are installed elsewhere
than at the front of the furnace.
4. The refrigerant and entrance supply open-
ing dimensions may be adjusted ± 1/2”.
Rear Wall
Secure Plenum Connector &
Mtg Plate With 2 Flat Head Screws
or Nails At Dimpled Locations
Refrigerant
Line
Opening
Supply Air Duct
Mounting
Plate
Plenum Bend Connector Tabs
Under Duct Opening
Figure 7. Rear Mounting Plate
InstallingPlenumConnector
NOTE: The plenum connector is designed for
useonductsdownto12"wide.Ontypicalducts,
the plenum connector may be installed using
Method A. On narrow ducts, there may be
insufficient clearance to bend the tabs on two
sides of the plenum connector. In such cases,
use Method B or C.
Method A
1. Placeplenumconnectorthroughflooropening
with bottom tabs resting on top of supply air
duct. Mark cutout area around inside of tabs.
2. Removeplenumconnectorand cutoutduct
opening slightly larger than area marked.
Figure 8. Plenum Connector

12
Duct
Duct Connector
Narrow Duct
3. If using optional rear mounting plate (sup-
plied with plenum connector), install it to
back edge of floor opening (see Figure 7).
Reinstall plenum connector in floor open-
ing. A shim may be used, if necessary, to
ensure the furnace is level.
4. Secure plenum connector to floor with two
flat-head fasteners at dimpled locations
(see Figure 8).
5. Secure connector to duct by bending bot-
tom tabs under and up against duct sur-
faces (see Figure 9).
Figure 9. Plenum Connector Installation A Figure 10. Alternate Plenum
Connector Installation B
Method B
1. Attach tabs to sides of duct (one on each
side) using sheet metal fasteners or other
method, ensuring that the plenum is se-
cureandsealedtotheduct(seeFigure10).
2. Tape duct flap edges with an approved
tape for a leak-free joint.
Method C
1. Score andcuttopofmetal duct asindicatedin
Figure11,Step1orStep2. IfusingStep1,also
cut out metal from the shaded area “A”.
2. Fold the duct flap “B” up (see Figure 11,
Step 3).
3. At the front-to-back of duct run (see Figure
Staple Folded Duct
Flap (typ) to side of
Plenum Connector
Duct
STEP 4.
Cut- Out
Area "A"
STEP 1.
"B"
"B" Cut- Out
Area"A"
Fold Back Flap "B"
Fold Back Flap "B"
Top of Duct
"A" "A" "B"
"B"
Fold Back Flap"B"
Cut
Lines Duct
Fold Back Flap"B"
STEP 2.
STEP 3.
Bend Plenum Connector Tabs Up
and Over- (along length of duct)
Duct
Flap "B"
Duct
Figure 11. Alternate Plenum Connector Installation C
TABS
DUCT
1. INSERT PLENUM CONNECTOR
INTO DUCT CUT-OUT
TABS
DUCT
2. BEND BOTTOM TABS OVER
AND ONTO THE UNDER-
NEATH DUCT SURFACE

13
20"
(508 mm)
24 3/4"
(629 mm)
A/C or H/P
Coil
Wall
Panel
Coil Air
Filters
Return
Air
Grille
Floor
56"
(1423 mm)
29"
( 737 mm)
27"
(686 mm)
11, area “A”), bend the plenum tabs and
secure them directly to the duct.
4. At area “B”, bend the plenum tabs up and
back over, around the plenum connector
(see Figure 11, step 3).
5. Fold/form the duct flap against the side of
theplenumconnectorandattachasshown
(see Figure 11, Step 4). Use at least three
staples on each duct flap OR... if a 2X
block/joist is not provided, use at least two
sheet metal fasteners on each duct flap.
6. Tape the duct flap edges with an approved
tape for a leak-free joint.
Alcove Installation
1. Cut alcove rough openings to minimum
dimensions shown in Figure 12.
2. Attach frame assembly with four fasteners
(provided or equivalent) into pre-punched
holes on top of furnace (see Figure 5).
3. At manufacturers discretion, if additional
securement is required attach each side of
frame assembly to alcove opening using
holes provided.
4. Attachreturnairgrilletoframeassemblyby
hooking grille over flange on top of frame
and into channel on bottom.
Closet Installation
NOTE: For closet installations, the return air
grille mounting frame is not used since the fur-
naceislocatedinsidethecloset(seeFigure13).
1. Cutreturnair openingindesiredposition in
door or wall, preferably above top of fur-
nace.RefertoTable1forreturnairopening
requirements.
2. Insertfourfasteners, securinggrilletodoor
or wall.
Furnace Installation
1. Install 240V supply circuit(s) and 24V wir-
ing to closet or alcove (see Figure 14 for
appropriate locations).
2. Remove refrigerant line knockouts in fur-
nace only when installing indoor coil of an
air conditioner or heat pump system, or for
hook-upofaVentilAireaccessorywhenthe
furnaceisusedintheupflowposition. Refer
to instructions supplied with accessory
equipment.
3. Remove unit front door and slide back until
bottomslotsinrearofunitengagewithboth
tabs of optional rear mounting plate, OR...
Ifmountingplateisnotused,anequivalent
method of securing the rear of the unit may
be used as long as it prevents displace-
mentduringtransportif used inamanufac-
tured home.
NOTE: Thefurnacedoesnotneedtobehardup
against the rear mounting plate. The tabs will
engage into the slots and allow approximately
1/2” of furnace front to back and right to left.
Figure 12. Typical Alcove Installation Figure 13. Typical Closet Installation
Wall-Mount
Return Air Grille
Holes (4)
Closet
Door

14
Power
Supply
Wire
Entrances
Blower Selector
Switch (EH Only)
Refrigerant
Line
Knockouts
Low Voltage
Wire Entrances
Figure 14. Downflow and Upflow Installations
4. Secure front of unit with one or more fas-
teners at mounting hole(s) provided or at
tie-down tab (see Figure 14).
5. See Electrical System Installation to com-
plete furnace installation.
TYPICAL INSTALLATION OF
UPFLOW SYSTEMS
The following steps describe installation in-
structions for an overhead supply duct system
with a return air system that can be either over
the floor (non-ducted) or through the floor
(ducted).
NOTES:
• Before installing this furnace, consider all
clearances for the installation and future ser-
vicing of the furnace. Refer to Table 1.
• The 2 Wire Relay Control is NOT recom-
mended for upflow applications, instead, the
AC/HP Relay Control (4-7 wire) should be
used when converting some models to ac-
cept an air conditioner. See Relay Control
installation instructions for further details.
Return Air and Filtering Systems
Furnaces may be installed with non-ducted or
ducted return air. For non-ducted systems with
air conditioners or heat pumps, the following
optional equipment is recommended: upflow
stand, coil cabinet, upflow duct connector, and
wall mount grille. For ducted systems with air
conditioners or heat pumps, the following op-
tional equipment is recommended: coil cabinet
and upflow duct connector.
NOTE: Refer to the instructions supplied with
any additional accessories for further installa-
tion details.
Filtering Methods - Non-Ducted Return Air
1. Withoutoptionalupflowstand:(seeFigure16)
-install a filter with a minimum unrestricted
medium area of 324 square inches below
the coil cabinet/furnace assembly that is
accessiblefor monthlycleaningorreplace-
ment by the homeowner
2. Withoptionalupflow stand:(seeFigure 15)
-stand must use two filters; one is supplied
with the stand and the other MUST be
removedfromthefurnaceandplacedinthe
stand - see upflow stand instructions for
additional details.
Filtering Methods - Ducted Return Air
1. Install a filter with a minimum unrestricted
medium area of 324 square inches below
the coil cabinet/furnace assembly that is
accessiblefor monthlycleaningorreplace-
ment by the homeowner
Applications and Furnace
Installation
NOTE: Remove refrigerant line knockouts in
furnaceonlywhen installing indoor coil of an air
conditioning or heat pump system.
Refer to instructions supplied with accessory
equipment.
Tie Down Tab
DOWNFLOW INSTALLATION UPFLOW INSTALLATION
Low Voltage Wire Entrances
Refrigerant
Line Knockouts
Blower Selector
Switch (EH Only) Tie-Down Tab
(See Inset)
Power
Supply
Wire
Entrances

15
Over-the-Floor Return Air System
(Non-Ducted)
1. If floor underneath furnace is made of com-
bustible material, locate a pan fabricated of
non-combustible material with 1" upturned
flanges under furnace return air opening
(see Figure 16). Ensure that return air
passage has no openings through support-
ing structure that would permit flame or hot
gases to travel from space below up into
space above supporting structure.
2. Use optional upflow stand with filters or
construct a suitably braced mounting plat-
form in closet (see Figure 15 or 16).
3. Install 240V supply circuit(s) and 24V wir-
ing to closet (see Figure 14 for appropriate
locations).
4. Position optional coil cabinet onto upflow
standormountingplatformandsecurewith
three or more fasteners.
5. Position furnace in upflow mode onto coil
cabinetandsecurewithtwoormorefasteners.
6. Use optional upflow duct connector or field
supplied connector to attach furnace to
overhead supply duct. (see Figure 15)
7. Installreturnairgrille inclosetpreferablyat
samelevelasupflowstandor belowmount-
ing platform (see Figure 16).
NOTE: Be certain to provide an adequate free
return air area as described under Return Air
CodesandRequirementsandClosed-OffSpace
Requirements.
Through-the-FloorReturnAirSystem(Ducted)
1. Prepare Floor Opening(s):
a.Markflooropening(s)asshowninFigure
17. Provide minimum clearances at rear
andleftsidewallsofclosetforinstallationof
furnace and wiring.
b. Cut floor opening on outside edge of
markedlinesothatopeningisslightlylarger
than area marked.
c. Additional provisions may be necessary
for optional air conditioning if refrigerant
lines are installed other than at the front of
the furnace.
2. If return air duct is made of combustible
material, locate a pan fabricated of non-
combustible material with 1" upturned
flanges under furnace return air opening.
Ensure that return air passage has no
openings through supporting structure that
would permit flame or hot gases to travel
from space below up into space above
supporting structure.
Coil Cabinet
Air Filter
Braced
Mounting
Platform
Front
Grille
Non-combustible
Pan or
Enclosure
WALL
FLOOR
Figure 16. Over-the-Floor Return Air
System
Figure 15. Over-the-Floor Return Air
System with Upflow Stand
Upflow Duct
Connector
Furnace
Filters
Upflow Stand
3. Install 240V supply circuit(s) and 24V wir-
ing to closet (see Figure 14 for appropriate
locations).
4. Position optional coil cabinet over floor
cutout and secure with three or more fas-
teners.
5. Position furnace onto coil cabinet and se-
cure with two or more fasteners.
6. Use optional upflow duct connector or field
supplied connector to attach furnace to
overhead supply duct (see Figure 15).

16
ELECTRICALSYSTEM
INSTALLATION
!WARNING:
To avoid the risk of electrical shock,
personal injury or death, disconnect
all electrical power to the unit before
performing any maintenance or
service. The unit may have more than
one electrical power supply.
Codes, Specifications, and
Requirements
Thewiring, installation,andelectricalhookupof
this furnace must comply with the National
ElectricalCode(ortheCanadianElectricalCode)
and all regulations of local authorities having
jurisdiction. See Table 6 for minimum circuit
ampacity,maximumover-currentprotection,and
recommended wire size. See the unit wiring
diagram for other wiring details.
Supply-circuit requirements are as follows:
• -010modelisfactory-wiredfor single-branch
supply circuit only.
• -012 models are factory-wired for single-
branch supply circuit (single-circuit kit in-
stalled). Dual-branch circuit can be used by
removing factory-installed single-circuit kit
(see Figures 18 and 19).
1 3/4" MIN
(45 mm)
23 3/4"
(604 mm)
3/4"
(20 mm)
20"
(508 mm)
17 1/2"
(445 mm) 14"
(356 mm)
5 3/4"
(147 mm)
3 1/8"
(80 mm)
3"
(73 mm)
Furnace
Outer Door
For Optional
A/C Or H/P
REAR WALL OF ENCLOSURE
CENTER LINE
Furnace
Outline
18 5/8"
(474 mm)
Figure 17. Upflow Floor Cutout Locations (nominal dimensions)
• -015, -017, -020 and -023 models are
factory-wired for dual-branch supply circuit.
Single-branch circuit can be used by
installing optional single-circuit kit .
!IMPORTANT:
Note:Circuitbreakersinstalledwithin
this unit are for short-circuit
protection of the internal wiring and
to serve as a disconnect. Circuit
breakers installed within this unit DO
NOT provide over-current protection
ofthesupplywiringandthereforemay
besizedlargerthanthebranchcircuit
protection.
Connecting Supply Service Wires
1. Remove right-hand control panel (when
viewing in downflow position).
2. Locate power supply hole plugs in side of
unit and in bottom of unit. Remove
appropriate plug(s) or knockout opening
applicable to recommended wire size(s).
3. Install listed cable connector(s) in
opening(s). If metal-sheathed conduit is
usedforincomingpowerline(s),providean
approved metal clamp on conduit and
secure it in entrance knockout.

17
Optional
Single Circuit
Adaptor Kit
Circuit Breaker
Bracket
60A
60A
ONON
OFF OFF
Circuit
Breaker
Wire
Assemblies
(Factory
Installed) Supply Service
Wire Connection
With Single Circuit
Adaptor Kit
4. Insert supply service wire(s) through cable
connector(s) and connect wires to circuit
breakers (Figures 18 and 19).
NOTE: To install single-circuit kit, perform
step 5. If single-circuit kit installation is not
necessary, go to step 6.
5. To install single-circuit kit:
a. Loosen lugs at supply side of circuit
breakers.
b. Remove cover from single-circuit kit (if
supplied).
c. Insert metal buss bars of kit into lugs of
circuit breaker.
d. Tighten lugs securely (45 in.-lbs.
recommended).
6. Connect service ground wire(s) to ground-
inglug(s)provided. Onegroundisrequired
for each supply circuit used.
Figure 18. Installation of Optional Single Circuit Adaptor Kit
Figure 19. Installation of Supply Service Wires
!WARNING:
To avoid personal injury or property
damage, make certain that the motor
leads cannot come into contact with
non-insulatedmetalcomponentsofthe
unit.
Selecting Blower Speed
See Table 5 for the lowest speed approved for
the heating output of the unit. Since the blower
leads connect to the control box, blower speed
selection is accomplished through use of the
proper color-coded blower lead located inside
thecontrolbox. Thespeed(s)set by thefactory
may be different from that shown on the wiring
diagrams. See the unit control box for blower
speed(s) set at factory.
60A
60A
ONON
OFF OFF
Circuit
Breaker
Wire
Assemblies
(Factory
Installed) Supply Service
Wire Connection
Without Single
Circuit Adaptor Kit
Circuit Breaker
Bracket

18
!
IMPORTANT:
Ifarelayboxisinstalled,blowerspeeds
for heating and cooling are set inside
the relay box (see instructions
included with relay box). The blower
speed inside the furnace control box
must be set to low or medium-low.
Neverchangetoaheatingspeedlower
than that shown in Table 5.
Changing Blower Speed
E2EH: The selected heating blower lead is
attached to the wire lead attached to terminal 2
of the blower selector switch.
a. Remove blower lead from the wire lead off
of terminal 2.
b. Choose desired speed.
c. Attach new blower lead to wire lead off
terminal 2 of blower selector switch.
E2EB: The selected heating blower lead is
attached to terminal 6 on blower relay. The
selected cooling blower lead is attached to
terminal 4 on blower relay.
a. Remove heating blower lead from terminal
6 on blower relay.
b. Choose desired speed and install new
blower lead onto terminal 6 of blower relay
for new heating speed.
c. Remove cooling blower lead from terminal
4 on blower relay.
d. Install new blower lead onto terminal 4 of
blower relay for new cooling speed.
See Table 7 for blower performance data.
Table 5. Furnace Blower Speed Data
Installing Control Circuit Wiring
NOTE: Installation of a five-wire thermostat
circuit is recommended to provide for future
addition of a heat/cool thermostat.
1. Installthe24Vcontrol-circuit cable through
plastic bushing at either side of furnace.
a. For models without a relay box, connect
wirestofurnaceatblowerplugpigtails(see
wiring diagrams). Secure all connections
with wire nuts.
b. For units with a relay box installed, make
wiringconnectionsatrelayboxlow-voltage
terminal board. (See relay box installation
instructions.)
2. Route control circuit wiring to wall
thermostatandoutdoorsection,ifinstalled.
(See relay box installation instructions if
applicable.)
3. Set anticipator per Table 8 or per the
marking on the unit.
4. SeethebackcoverofthismanualforE2EB
thermostat connections.
SYSTEM CHECKOUT
Checking Installation
1. Refer to appropriate wiring diagram and
recheckallwiringconnections. Ensurethat
all connections are tight.
2. Check blower motor and relay box
connectors for proper connection.
3. Reinstall control box cover(s).
4. Switch circuit breaker(s) to “ON” position.
5. Set furnace blower selector switch (see
Figure 14) to “AUTO” (EH Units only).
6. Replace outer furnace door.
7. Check all duct connections and tape for air
leakage.
Plug/Receptacle Position Pin1 Pin2 Pin3 Pin4
2 Speed Blower Low High - -
4 Speed Blower Low Med-Lo Med-Hi High
Control Box Blower Lead Red Yellow Blue Black
Minimum approved speed for
010 and 012 models. Minimum approved speed fo
r
015, 017, 020 and 023 models.

19
Standard 2-Speed Blower,
with filter, @ 0.3" ESP
Pin No. Speed CFM
#1 Low 840
#2 High 1160
4-Ton Blower with Coil and
Coil Filters, @ 0.3" ESP
Pin No. Speed CFM
#1 Low 880
#2 Med.-Low 1170
#3 Med.-High 1310
#4 High 1460
5-Ton Blower, with Coil and
Coil Filters, @ 0.3" ESP
Pin No. Speed CFM
#1 Low 990
#2 Med.-Low 1320
#3 Med.-High 1620
#4 High 1790
Sizes*
Model Max Over- Min. 75°C Copper Low-Voltage
E2EH/
E2EB-
Supply
Circuit
Total
Amperes Current Rating Circuit Ampacity Wire Size Ground Size Thermostat Wire Size
010 Single 45.5 60 57 6 10
012 Single
52.1 70 65 6 8
Dual "A"
28.0
40 35 8 10
"B"
24.2 30 30 10 10
015 Single
66.3 90 83 4 8
Dual "A"
45.5 60 57 6 10
"B"
20.8 30 26 10 10
017 Single
71.3 90 89 3 8
Dual "A"
48.8 60 61 6 10
"B"
22.5 30 28 10 10
020 Single
87.1 125 109 2 6
Dual "A"
45.5 60 57 6 10
"B"
41.7 60 52 6 10
023 Single
93.8 125 117 1 6
Dual "A"
45.5 60 57 6 10
"B"
48.3
60 60 6 10
2-Wire
system max
wire lengths :
24 Ga. = 55’
22 Ga. = 90’
20 Ga. = 140’
18 Ga. = 225’
4 or more-Wire
system max
wire lengths :
24 Ga. = 25’
22 Ga. = 45’
20 Ga. = 70’
18 Ga. = 110’
Table 6. Electrical Specifications
Table 7. Blower Performance
Table 8. Anticipator Settings
* All wire sizes for copper conductors only, based on NEC Table 310-16. Equivalent wiring may be used per NEC.
Furnace Thermostat
Model Anticipator Setting
010, 012 0.20
015, 017,
020, 023 0.40
ALL MODELS CLOSET ALCOVE
Front ‡ 6" 18"
Back 0" 0"
Sides 0"† 0"†
Top 0" 0"
Top and Sides of Duct 0" 0"
Bottom of Duct 0" 0"
‡ Service Clearance
† For upflow application using upflow stand,
1" minimum per side.
Table 9. Clearances

20
240V
Transformer
Seq
1
24V
Red Pig-Tail
White Pig-Tail
2
4
Seq 1
C
L
IFM
CB-A CB-A
IFS
LS
Top - 10.0
6
H
1
2
3
4
5
Red
Blue
Black
E
Seq 1
IFS
Yellow
Grey
Org.
3
(See Note 7)
Grey Pig-Tail
Fuse
Figure 20. E2EH 010 Wiring Diagrams
L
C
ORANGE
BLACK
WHITE GREY
RED
RED
TRANSFORMER
240V
24V
1
2
3
ELEMENTS
TOP ELEMENT, 10.0 KW
BLACK RED
BLOWER
SWITCH H
BLACK
GREY
RED
BLACK
GREY
RED
ORANGE
GRAY
BLACK
BLUE
YELLOW
RED
WHITE
YELLOW
RED
BLACK
M2 M1
M4 M3
BLACK
BLACK
SEQUENCER LIMIT
RED
42
31
123
456
123
456
1
1
2
2
3
3
4
4
5
5
6
6
60A
ON
OFF
Circuit A
Line
Voltage
GRD Ground
Supply
CIRCUIT
BREAKER
BLOWER
SPEED
SELECTOR
LEADS
(See
Note 7)
BROWN
VIOLET FUSE
Legend:
IFM – Fan Motor
CB – Circuit Breaker
E – Heater Element
IFS – Fan Switch
Seq – Sequencer
IFR – Fan Relay
LS – Limit Switch
– Fan Plug
– Control Plug
NOTES:
1) See unit data label for recommended supply wire sizes.
2) Thermostat anticipator setting: 0.20 Amps.
3) Tochangeblowerspeedsonunitswithoutarelayboxrefer
to installation instructions.
4) Refer to furnace and/or relay box installation for thermo-
stat connections.
!
WARNING:
Switch circuit breakers to
the OFF position beore
servicing the furnace.
5) If any wire in this unit is to be replaced it must be
replaced with 105°C thermoplastic copper wire of
the same gauge.
6) Not suitable for use on systems exceeding 120V to
ground.
7) Thiswireisusedwithsomeaccessories.Seeacces-
sory Installation Instructions for further details.