Miller E7EM Installation Instruction

E7 Series Electric Furnace - R410A and A2L Compatible
INSTALLATION INSTRUCTIONS
Downflow & Upflow Models
E7EM MULTI-POISE
E7EU UPFLOW
WARNING
ELECTRICAL SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury, death or property
damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Before servicing, disconnect all electrical
power to Appliance both poles.
• When servicing controls, label all wires prior
to disconnecting. Reconnect wires correctly.
• Verify proper operation after servicing.
DO NOT DESTROY. PLEASE READ CAREFULLY &
KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
E7ED DOWNFLOW
ATTENTION INSTALLERS:
It is your responsibility to know this product better than your
customer. This includes being able to install the product
according to strict safety guidelines and instructing the
customer on how to operate and maintain the 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 attention to all
safety warnings and any other special notes highlighted
in the manual. Improper installation of the Appliance or
failure 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.
TABLE OF CONTENTS
IMPORTANT SAFETY INFORMATION..................... 3
REQUIREMENTS & CODES..................................... 3
Minimum Installation Clearances......................................... 3
Minimum Unobstructed Airflow........................................... 3
Clearances to Combustible Materials.................................. 4
A2L INDOOR COIL.................................................... 4
C85 Loose Coils.................................................................... 4
Coils from other manufacturers........................................... 4
E7ED Downflow Unit............................................................. 4
Tube Guards....................................................................... 4
Top Opening....................................................................... 5
Cabinet Sealing.................................................................. 5
CIRCULATING AIR REQUIREMENTS...................... 5
Return Air Connections........................................................ 5
Upflow Alcove installations............................................... 5
Closet installations............................................................. 5
Downflow alcove installations........................................... 5
Supply Air Connections........................................................ 5
Filtering Methods - Downflow Appliances.......................... 5
Non-Ducted Return Air...................................................... 5
Without A/C or H/P uncased coil.................................. 5
With A/C or H/P uncased coil........................................ 5
With optional coil housing............................................. 5
Ducted Return Air............................................................... 5
Filtering Methods - Upflow Appliances............................... 5
Non-Ducted Return Air...................................................... 5
Without optional upflow stand.......................................... 5
With optional upflow stand............................................ 6
Ducted Return Air............................................................... 6
Optional Equipment.............................................................. 6
Optional Automatic Furnace Damper............................... 6
Duct Connectors for Downflow Systems......................... 6
APPLIANCE INSTALLATION................................... 6
General Information.............................................................. 6
Before You Install this Appliance......................................... 6
Locating the Unit................................................................... 6
Locating & Cutting Floor Openings..................................... 6
Standard Duct Connector Installation................................. 7
Narrow Duct Connectors...................................................... 8
Round Duct Connector Installation..................................... 8
Closet and Alcove Installations............................................ 9
Downflow Appliances........................................................... 9
Upflow Appliances................................................................ 9
Over-the-Floor Return Air System (Non-Ducted)............. 9
Through-the-Floor Return Air System (Ducted)............... 10
ELECTRICAL WIRING.............................................. 11
Line Voltage Wiring............................................................... 11
Connecting Supply Service Wires....................................... 11
Grounding.............................................................................. 12
Thermostat / Low Voltage Connections.............................. 12
Humidifier............................................................................... 12
Dehumidification Options..................................................... 12
Electronic Air Cleaner (EAC)................................................. 12
Changing Blower Speed....................................................... 12
Installing Control Circuit Wiring........................................... 12
START-UP & ADJUSTMENTS.................................. 13
Pre-Start Check List.............................................................. 13
Start-up Procedures............................................................. 13
FIGURES & TABLES................................................. 13
Figure 18. E7 Appliance Components.............................. 13
Figure 19. E7EM Physical Dimensions............................. 14
Figure 20. E7EU & E7ED Physical Dimensions................ 14
Figure 21. E7 Supply Wire Bracket................................... 15
Figure 22. E7 Appliance Upflow Stand Dimensions........ 15
Airflow Data........................................................................... 16
Table 4. E7 Airflow Data..................................................... 16
Table 5. Maximum Allowable Heat Settings..................... 17
Electrical Data & Diagrams................................................... 18
Figure 23. E7 Thermostat Connection.............................. 18
Table 6. Unit Specifications............................................... 18
Table 7. E7 Electrical Specifications................................. 19
Figure 24. E7 Motor Control Board................................... 20
Figure 25. E7EB-010K Models.......................................... 21
Figure 26. E7EB-012K Models.......................................... 22
Figure 27. E7EB-015K Models.......................................... 23
Figure 28. E7EB-017K Models.......................................... 24
Figure 29. E7EB-020K & E7EB-023K Models.................. 25
Table 8. Control Board Operation..................................... 26
Table 9. Electrical Specifications of Legacy
240V E7 Appliances for Reference.................... 27
INSTALLATION CHECKLIST.................................... 28
MODEL IDENTIFICATION
E
7
E
M - B 010
Electrical Code
H - 240-1-60
K - 208/230-1-60
Generation
7 - Seventh Series
2
1
Revision
Product Type
E - Electric Furnace
Blower
E - Constant Torque
16 Speed ECM
K
Blower
M - Upflow/Downflow
D - Downflow
U - Upflow
Nominal Capacity
010 - 10 kw
012 - 12 kw
015 - 15 kw
017 - 17 kw
020 - 20 kw
023 - 23 kw
R410A and A2L(454B) Indoor coil compatible
IMPORTANT SAFETY INFORMATION
INSTALLER: Please read all instructions before servicing
this equipment. Pay attention to all safety warnings and
any other special notes highlighted in the manual. 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.
This appliance is not intended for use by persons
(including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction
concerning use of the appliance by a person responsible
for their safety. Children should be supervised to ensure
that they do not play with the appliance.
REQUIREMENTS & CODES
WARNING:
This unit must be installed in accordance
with instructions outlined in this manual
during the installation, service, and operation
of this unit. Unqualified individuals should
not attempt to interpret these instructions or
install this equipment. Failure to follow safety
recommendations could result in possible
damage to the equipment, serious personal
injury or death.
• The installer must comply with all local codes and
regulations which govern the installation of this type
of equipment. Local codes and regulations take
precedence over any recommendations contained in
these instructions. Consult local building codes and the
National Electrical Code (NEC) for special installation
requirements.
• All electrical wiring must be completed in accordance
with local, state and national codes and regulations
and with the National Electric Code (ANSI/NFPA 70) or
in Canada the Canadian Electric Code (CSA Z240.6.1,
& Z240.9.1).
• Design and construction of the home duct system,
must be in accordance with: HUD Manufactured Home
Construction & Safety Standard (Title 24, Part 3280)
and American National Standards (ANSI) A119.11, C1NFPA 7.
• Plenums and air ducts must be installed in accordance
with the Standard for the Installation of Air Conditioning
and Ventilating Systems (NFPA No. 90A) or the
Standard for the Installation of Warm Air Heating and
Air Conditioning Systems (NFPA No. 90B).
• Follow all precautions in the literature, on tags, and
on labels provided with the equipment. Read and
thoroughly understand the instructions provided with
the equipment prior to performing the installation and
operational checkout of the equipment.
This unit E7 is a PARTIAL UNIT AIR CONDITIONER,
complying with PARTIAL UNIT requirements of this
International Standard, and must only be connected to
other units that have been confirmed as complying
to corresponding PARTIAL UNIT requirements of this
International Standard, UL 60335-2-40/CSA C22.2 No.
60335-2-40, or UL 1995/CSA C22.2 No 236.
Minimum Installation Clearances
• Access for positioning and servicing the unit must be
considered when locating unit. The need to provide
clearance for access to panels or doors may require
clearance distances over and above the requirements.
For alcove installations allow 24 (61 cm) inches
minimum clearance from the front of the unit for
future servicing. Closet installations require 6
inches (152 mm)minimum.
• This appliance must be installed in accordance with
clearances listed in Table 1. The Appliance must be
installed with ample clearance for easy access to the
air filter, blower assembly, burner assembly, controls,
and vent connections.
ALL MODELS
Front **
Back
Sides*
Top
Top & Sides of Duct
Bottom of Duct
CLOSET
6" (152 mm)
0"
0"
0"
0"
0"
ALCOVE
24" (609 mm)
0"
0"
0"
0"
0"
* For upflow application using upflow stand, 3” (76 mm) minimum
per side.
** Service Clearance
Table 1. Minimum Clearance Requirements
• Locate and install this unit in position as specified
on page 6. This unit is designed only for Indoor
installations and should be located with consideration
of minimizing the length of the supply and return ducts.
See Table 4 (page 16), Table 5 (page 17), or the rating
plate for circulating airflow data.
Minimum Unobstructed Airflow
• Sufficient clearance for unobstructed airflow must be
maintained in order to achieve rated performance.
Air return to the Appliance must have the minimum
required total free area:
— 200 in2 (1290 cm2 ) for furnace only. May also include
return air grille and frame assembly P/N 902989 or
wall mount grille P/N 902999).
— 235 in2 (1516 cm2 ) with 4 ton or smaller A.C. or H.P.
installed.
— 250 in2. (1613 cm2 ) with 4 ton or smaller A.C. or
H.P. installed & 1” special clearance.
— 275 in2 (1775 cm2 ) with up to 5 ton A.C. or H.P.
installed.
• If using louvered doors, the total free area must be
calculated. Louvered doors installed at the factory are
about 70% free area. If using a third party louvered
door manufacturer, check their technical specifications
to determine the free area.
3
• For closet installations with less than 6” front clearance,
but not less than 1” (25 mm), a louvered door must
be used having a minimum 250 sq in2 (1,613 cm2)
free area opening directly in line with openings in the
Appliance door.
Clearances to Combustible Materials
• This Appliance is Design Certified in the U.S. and
Canada by ETL for the minimum clearances to
combustible materials. NOTE: The Appliance is listed
for installation on combustible or non-combustible
flooring. To obtain specific clearance information, refer
to the Appliance rating plate, located inside of the
Appliance cabinet.
• 0” from all surfaces of Appliance cabinet, ducts,
optional coil housing and plenum connector. No
separate subbase required for installations on
combustible flooring.
2. Remove the front panel.
3. Install the right guard as shown in Figure 2 and secure
with 2 of the supplied fasteners.
4. Install the left guard as shown in Figure 3 and secure
with 2 of the supplied fasteners.
5. Reinstall and secure the front panel.
6. Reconnect the power.
A2L Indoor Coil
C85 Loose Coils
C85 Loose Coils have been evaluated for the safe use
of A2L refrigerants, to meet requirements by Nortek and
the standards in UL 60335-2-40. Due to the nature of the
flammability of A2L refrigerants, modifications have been
made to mitigate refrigerant leaks from a C85 coil in an E7
furnace. Nortek has added an A2L sensor on all C85 coils
located in the front plate. See Figure 1. See the C85 wiring
diagrams and installation instructions for the installation
of an C85 coil in an E7 furnace.
#10 screw
#10 screw
#10 screw
Figure 2. Right Guard Fastened with Screws
A2L Sensor
Figure 1. A2L Sensor Location
#10 screw
#10 screw
Coils from other Manufacturers
If coils are used by other manufacturers, follow the coil
manufacturer guidelines for installation and wiring.
E7ED Downflow Unit
Tube Guards
To further aid in the detection of refrigerant, guards will
need to be installed, shipped loosely with the E7ED
downflow unit.
Installation of the guards.
1. Disconnect all power to the unit.
4
Figure 3. Left Guard Fastened with Screws
Top Opening
Additionally, a cover plate is factory installed to close the
top opening. For downflow units with front application,
the top of the unit must not be left open and must have
a ducted connection made when used.
You may notice the change in the louvered front panel.
Some of the louvers were shifted and some removed.
Cabinet Sealing.
The furnace must be sealed from all penetrations. Ensure
all holes, tubing and braze joint entrances are adequately
sealed with the provided gaskets or with non-hardening
duct-seal putty.
CIRCULATING AIR REQUIREMENTS
WARNING:
All return ducts must be secured to the Appliance
with sheet metal screws. All return ducts must be
adequately sealed. When return air is provided
through the bottom of the unit, the joint between
the Appliance and the return air plenum must
be air tight.
Return air and circulating air ducts 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.
Return Air Connections
Air return to the Appliance must have a minimum free area
opening that meets the minimum installation clearances
found on page 6. A return air grille for closet or alcove
installations is available. Acceptable installations with
return air entering through an opening in the floor, ceiling
of a closet, or alcove installation, must meet all of the
following requirements:
• The return air opening, regardless of its location, must
not be smaller than size specified on unit data label. If
located in the floor, the opening must be provided with
a means of preventing its inadvertent closure by flat
object(s) placed over the opening.
• A return air grille must be used on the Appliance when
installed in a closet or alcove:
Upflow Alcove installations
– E7EM Models: Use a coil box with a solid door and
an upflow stand (Figure 4 (page 6)). Part numbers can
be found in the Technical Specifications Literature.
– E7EU Models: Use upflow stand.
Closet installations
– All E7 Models: The top opening needs to be
connected to a return duct or be covered.
A louvered door must be added in the closet door
or above it for adequate air flow.
Downflow alcove installations
– E7EM Models: If a coil is installed, it must be with
a coil box. A grille may be attached to the top of
the Appliance and all paneling and trim flushed to it.
This installation provides an access door for future
installation of air conditioning or heat pump coils
on top of the Appliance.
– E7ED models are for ducted and non-ducted return.
– E7EU Models can be used for ducted return.
• Materials located in return air duct system must have a
flame-spread classification of 200 or less.
• Noncombustible pans having 1” (25 mm) upturned
flanges must be located beneath openings in a floorreturn duct system.
Supply Air Connections
• Supply duct system must be designed for proper air
distribution. Static pressure measured externally to
Appliance shall not exceed static pressure rating listed
on Appliance nameplate.
• Duct system must be designed so that no supply
registers are located in duct system directly below the
Appliance.
Filtering Methods - Downflow Appliances
Non-Ducted Return Air
For unducted return air systems, either the optional grille
and frame assembly or the optional wall mount grille is
recommended.
• E7ED Models: Make sure there is an 18” (457 mm) x 20”
(508 mm) filter in the top filter rack and an 18” (457 mm)
x 20” (508 mm) filter in the front filter rack.
Without A/C or H/P uncased coil
• Use the filter supplied with the Appliance. Make sure
the filter is installed mat side down between the filter
retainer and Appliance top.
With A/C or H/P uncased coil
• Use the optional coil filters; the filter supplied with the
Appliance is not used; REMOVE AND DISCARD THIS
FILTER.
With optional coil housing
• See coil cabinet instructions for specific filtering
methods.
Ducted Return Air
For ducted return air systems with air conditioners or
heat pumps, either providing an access panel in the duct
or using the optional coil cabinet is recommended. The
duct system must be properly sized to account for any
additional external static pressure produced from the
chosen filtering method.
NOTE: Install a filter with a minimum unrestricted medium
area that meets the application requirements of the
Appliance in the duct above the coil that is accessible for
monthly cleaning or replacement by homeowner.
Filtering Methods - Upflow Appliances
Non-Ducted Return Air
Appliances may be installed with unducted or ducted return
air. For unducted systems it is recommended to use an
upflow stand for optimal performance.
Without optional upflow stand
• Install a filter with a minimum unrestricted medium area
5
of 324 in2 (2087cm2) below the coil cabinet/Appliance
assembly that is accessible for monthly cleaning or
replacement by the homeowner.
installation procedures are suggested for typical Appliance
installations. Only qualified HVAC technicians should
install this Appliance.
With optional upflow stand
• Stand (Figure 4) will use filters provided with the unit.
Remove any filters in the Appliance and follow proper
installation. See instructions supplied with the upflow
stand for additional details.
General Information
This Appliance is designed only for indoor
installations. Units are approved for single/multistory
residential or mobile / modular / manufactured structures
in upflow and downflow (freestanding / closet / alcove)
configurations. This appliance is intended for use at a
maximum altitude of 3048m (10,000ft).
Ducted Return Air
For ducted systems with air conditioners or heat pumps,
the following optional equipment is recommended: coil
cabinet and upflow duct connector.
• Install a filter with a minimum unrestricted medium
area that meets the application requirements of the
Appliance below the coil cabinet/Appliance assembly
that is accessible for monthly cleaning or replacement
by the homeowner.
24 3/4” (628 mm)
20”
(508 mm)
20” (508 mm)
Upflow Stand
Figure 4. Optional Upflow Stand
Optional Equipment
NOTE: Refer to the instructions supplied with any additional
accessories for further installation details. Ventilaire
attachment locations are indicated in Figure 20 (page 14),
Figure 21 (page 14) & Figure 23 (page 15).
Optional Automatic Furnace Damper
Appliance may be equipped with the optional automatic
damper when a packaged air conditioner is installed and
connected to the warm air duct system. This damper (not
required) prevents cooled air from discharging through
the Appliance cabinet, causing excessive cooling of the
immediate area. Refer to the instructions supplied with
the damper for details.
Duct Connectors for Downflow Systems
Duct connectors are recommended for heated air
distribution in under-the-floor duct systems. With this
system, Appliances may be installed on combustible
flooring without a separate sub-base. The Appliance rear
mounting plate (Figure 8 (page 8)) supplied with the duct
connectors is recommended for use with this type of
installation.
APPLIANCE INSTALLATION
NOTE: Since all installations are different, the sequence of
these steps may differ from the actual installation. These
6
Approved installation, operation, and maintenance of
this appliance must be in accordance with the listed
specifications contained in these instructions and other
documents supplied with the Appliance and/or optional air
conditioning equipment. Unless it is noted differently in this
manual, only use factory authorized kits and accessories
when modifying this appliance. Refer to local authorities
having jurisdiction for further information.
Before You Install this Appliance
√ This equipment is securely packaged at the time of
shipment and upon arrival should be carefully inspected
for damage prior to installing the equipment at the job
site. Claims for damage (apparent or concealed) should
be filed immediately with the carrier.
√ Check the electrical supply and verify the power
supply is adequate for unit operation. The system
must be wired and provided with circuit protection in
accordance with local building codes. If there is any
question concerning the power supply, contact the
local power company.
√ Verify the air delivery of the Appliance is adequate to
handle the static pressure drop of the coil, filter, and
duct work.
Locating the Unit
• Survey the job site to determine the best location for
installing the unit. Consideration should be given to
availability of electric power, service access, and noise.
• The dimensions of the room or alcove must be
able to accommodate the overall size of the unit
and the installation clearances in Table 1 (Page 3).
Physical dimensions for this Appliance are shown in
Figure 20 (page 14). If an upflow stand will be used, see
Figure 23 (page 15) for component dimensions.
• The unit must be leveled at installation and attached to
a properly installed duct system.
• The surface that the Appliance is mounted on must
provide sound physical support of the unit.
Locating & Cutting Floor Openings
Floor cut-outs must be carefully located to avoid
misalignment of the Appliance and air duct. Standard
and round cutouts for upflow Appliances are shown in
Figure 5 (page 7). The cutouts for downflow Appliances
are shown in Figure 6 (page 7).
1. Measure and mark the centerline of the cutout. Provide
minimum clearances at rear and right side walls of closet
or alcove for installation of Appliance and wiring.
2. Using the centerline as a starting point, draw the
rest of the duct cut-out to the dimensions shown in
Figure 5 or Figure 6.
NOTE: Additional provisions may be necessary for optional
air conditioning or heat pump if refrigerant lines are
installed elsewhere than at the front of the Appliance.
The refrigerant and entrance supply opening dimensions
may be adjusted ± 1/2” (13 mm).
3. Cut out the floor opening 1/16” (1.6 mm) 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 7 (page 8) will determine the correct duct
connector.
5. Determine which duct connector to use from Table 2
(page 8)
Standard Duct Connector Installation
The standard duct connector is designed for use on ducts
12” (305 mm) in width. NOTE: Ducts narrower than 12”
(305 mm) may not allow sufficient clearances for this type
of installation. See Narrow Duct Connector section.
1. Center the duct connector in the floor opening with
bottom tabs resting on top of the supply air duct.
2. Mark the cut-out area on the supply air duct by tracing
around the connector tabs of the duct connector. See
Figure 8 (page 8).
3. Remove the duct connector and cut out the marked area
of the supply air duct 1/4” (6 mm) larger than the actual
cutout drawn.
4. Install the duct connector back in the floor opening with
the bottom tabs extending into the supply air duct.
5. Install the optional mounting plate (Figure 8) under the
back side of the duct connector. Align the screw holes
in both components.
6. Secure the duct connector and the mounting plate (if
using mounting plate on install) to the wood floor with
appropriate size screws.
7. Bend the connector tabs on the bottom of the duct
connector upwards and as tight as possible against the
supply air duct. See Figure 9 (page 8).
8. Seal all connections with industrial grade sealing tape or
liquid sealant. See HUD Code 3280.715 for acceptable
standards for sealing products.
REAR WALL OF CLOSET OR ALCOVE
REAR WALL OF CLOSET OR ALCOVE
3”
(7.6 cm)
10" (25.4 cm)
FURNACE
DOOR
20" (50.8 cm)
OPTIONAL
REFRIGERANT LINE
4 1/4” (10.8 cm) X
3 3/4” (9.5 cm)
5”
(1.3 cm)
10" (25.4 cm)
3 3/8”
(8.6 cm)
FURNACE
DOOR
20" (50.8 cm)
REAR WALL OF CLOSET OR ALCOVE
1 3/4"
(4.4 cm)
MIN.
CL
20" (50.8 cm)
FURNACE
DOOR
ROUND DUCT CONNECTOR
Figure 5. Cut-Out Dimensions for Upflow
Appliances
14 1/4” (36.8 cm)
DIAMETER FOR
DOWNFLOW FURNACES
WITH ROUND DUCT
CONNECTORS
CL
3/4" (1.9 cm)
3”
(7.6 cm)
10" (25.4 cm)
FLOOR CUT-OUT
16 5/8" (6.0 cm)
FURNACE OUTLINE
23 3/4" (6.0 cm)
FLOOR CUT-OUT
14 1/4” (36.8 cm)
DIAMETER FOR
UPFLOW FURNACES
WITH ROUND DUCT
CONNECTORS
17" (6.0 cm)
2 3/8"
(6.0 cm)
MIN.
FURNACE OUTLINE
18 5/8" (47.3 cm)
3/4" (1.9 cm)
STANDARD DUCT CONNECTOR
REAR WALL OF CLOSET OR ALCOVE
23 3/4" (60.3 cm)
OPTIONAL SUPPLY
WIRE ENTRANCE
3” (6.0 cm) X
6 1/4” (6.0 cm)
3/4" (1.9 cm)
STANDARD DUCT CONNECTOR
OPTIONAL
REFRIGERANT LINE
3 1/8” (7.9 cm) X
5 3/4” (14.6 cm)
FURNACE OUTLINE
17" (6.0 cm)
FLOOR CUT-OUT
14 1/2” (36.8 cm) X
14 1/2” (36.8 cm)
FOR DOWNFLOW
FURNACES WITH
STD. DUCT
CONNECTORS
CL
CL
OPTIONAL
REFRIGERANT LINE
3 1/8” (7.9 cm) X
5 3/4” (14.6 cm)
23 3/4" (6.0 cm)
FURNACE OUTLINE
18 5/8" (47.3 cm)
23 3/4" (60.3 cm)
FLOOR CUT-OUT
17 1/2” (44.4 cm) X
14” (35.5 cm)
FOR UPFLOW
FURNACES WITH
STD. DUCT
CONNECTORS
16 5/8" (6.0 cm)
2 3/8" (6.0 cm) MIN.
1 3/4" (4.4 cm) MIN.
OPTIONAL
REFRIGERANT LINE
4 1/4” (10.8 cm) X
3 3/4” (9.5 cm)
5”
(1.3 cm)
10" (25.4 cm)
OPTIONAL SUPPLY
WIRE ENTRANCE
3” (6.0 cm) X
6 1/4” (6.0 cm)
3/4" (1.9 cm)
3 3/8”
(8.6 cm)
20" (50.8 cm)
FURNACE
DOOR
ROUND DUCT CONNECTOR
Figure 6. Cut-Out Dimensions for Downflow
Appliances
7
FLOOR OPENING
“X”
OD
WO
OR
FLO
TOR
EC
NN
CO TABS
SUPPLY AIR DUCT
FLOOR
CAVITY
MOUNTING
PLATE
Figure 7. Floor Cavity
IF FLOOR CAVITY
“X” IS:
7/8” / (22 mm)
2” / (51 mm)
4-1/4” / (108 mm)
6-1/4” / (159 mm)
8-1/4” / (210 mm)
10-1/4” / (260 mm)
12-1/4” / (311 mm)
DUCT
CONNECTOR
LY
PP
SU DUCT
AIR
DUCT CONNECTOR
TYPE & PART NUMBER
STANDARD DUCT
SCREW DOWN
901987A
901988A
901989A
901990A
901991A
901992A
901993A
904008
904009
904010
904011
904012
904013
904014
Figure 8. Standard Duct Connector Installed
DUCT CONNECTOR
NOTE: Dimensions shown as Inches / (Millimeter)
SUPPLY
AIR DUCT
Table 2. Duct Connector Sizes
2. Install and center the duct connector in the floor opening.
3. Install the mounting plate under the back side of the
duct connector. See Figure 12 (page 9). 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.
5. Connect the round supply duct to the underside 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.
OPTION 1
REMOVE
THIS
FLAP
CUT HERE
OPTION 2
CUT HERE
CUT HERE
FOLD FLAP HERE
FOLD FLAP HERE
FOLD FLAP HERE
CUT HERE
REMOVE
THIS
FLAP
CUT HERE
TH
ER
E
SUPPLY
AIR DUCT
CU
E
CU
TH
ER
E
ER
TH
CU
FOLD FLAP HERE
E
ER
8
Figure 9. Duct Connector Tabs
TH
Round Duct Connector Installation
The 14” (355 mm) round duct connector is designed to
connect directly to a 14” (355 mm) flexible duct. NOTE:
Flexible ducts must meet all applicable codes and
standards.
1. Apply a bead of caulking, mastic, or other approved
sealant around bottom side of connector.
BEND TABS TIGHTLY
AGAINST SUPPLY AIR DUCT
CU
Narrow Duct Connectors
This attachment method should be used if there is
insufficient clearance to bend the tabs on a standard 12”
(305 mm) duct connector.
1. Score and cut the top of the supply air duct as indicated
in Option 1 or Option 2 (Figure 10). 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.
4. Bend the tabs on the bottom of the duct connector
upwards and as tight as possible against the supply
air duct. See Figure 11 (page 9).
5. Form the flaps (Options 1 or 2) up against the duct
connector as tight as possible.
6. Secure the duct connector flaps to the supply air
duct with staples (3 minimum) or if a 2x block/joist is
not provided, use sheet metal screws (2 minimum).
NOTE: The duct connector tabs may be attached to
the air duct with sheet metal screws or other suitable
fasteners as long as the duct connector and the air duct
are securely attached.
7. Seal all connections with industrial grade sealing tape
or liquid sealant.
Figure 10. Narrow Air Duct Openings
STAPLES OR SHEET
METAL SCREWS
DUCT CONNECTOR TABS
NARROW
DUCT
NARROW
DUCT
DUCT
FLAP
DUCT
CONNECTOR
SHEET METAL
SCREWS
NARROW
DUCT
Figure 11. Narrow Ducts
Closet and Alcove Installations
A2L refrigerant systems are required to have coil box
installed with the appliance. R410A refrigerant systems
are recommended to have a coil box installed with the
appliance. In all configurations, return air must meet
requirements found in Minimum Unobstructed Airflow
section. See Figure 13 (page 10).
1. Cut return air opening in desired position in door or
wall. Best practice is above the Appliance. Refer to the
Minimum Unobstructed Airflow section (page 3) for return
air opening requirements.
2. Insert four fasteners, securing grille to door or wall.
Downflow Appliances
For typical unducted return air downflow applications,
an air-conditioner or heat-pump coil can be installed by
mounting the coil directly on top of the Appliance without
adding sheet metal cavities or cutting and trimming wood
panels. Unducted return air systems may be used for closet
or alcove installations.
The steps below describe installation procedures for
an under-the-floor supply duct system with a ducted
or unducted return air system. Duct connectors are
recommended for this application. See Table 2 (page 8).
NOTE: Remove refrigerant line knockouts in Appliance
only when installing indoor coil of an air conditioner or
heat pump system. Refer to instructions supplied with
accessory equipment.
1. Route supply circuit(s) and 24V wiring to closet
or alcove. See Figure 19 (page 14) or Figure 20
(page 14) for locations. Select appropriate terminal on
unit’s transformer for either 208V or 230V.
2. Remove Appliance front door and slide back until bottom
slots in rear of unit engage with both tabs of optional
rear mounting plate. If mounting plate is not used, an
equivalent method of securing the rear of the unit may
be used as long as it prevents displacement during
transport if used in a manufactured home.
ROUND DUCT
CONNECTOR
SCREWS MOUNTING
PLATE
14” (36 cm) SUPPLY
CONNECTION
Figure 12. Round Duct Connector Installed
NOTE: The Appliance does not need to be positioned
against the rear mounting plate. The tabs will engage into
the slots and allow approximately 1/2” (13 mm) of Appliance
adjustment front to back and side to side.
3. Secure front of unit with one or more fasteners at
mounting hole(s) provided or at tie-down tab. See
Figure 13 (page 10) or Figure 17 (page 11).
4. See Electrical Wiring section (page 11) to complete
Appliance installation.
Upflow Appliances
The following steps describe installation instructions for
an overhead supply duct system with a return air system
that can be either over the floor (unducted) or through the
floor (ducted).
NOTE: Remove refrigerant line knockouts in Appliance
only when installing indoor coil from an air conditioner or
heat pump system.
Refer to instructions supplied with accessory equipment.
Over-the-Floor Return Air System (Non-Ducted)
1. If floor underneath Appliance is made of combustible
material, locate a pan fabricated of non-combustible
material with 1” (25 mm) upturned flanges under Appliance
return air opening. See Figure 19 (page 14).
9
2. Use optional upflow stand (refer to the technical
specifications literature for part number) with filters or
construct a suitably braced mounting platform in closet.
See Figure 15 (page 10).
Provide min. 235 sq. in. (1516 cm2)
open free area in front or side wall
or in top of closet door
0" (0 mm) Side
Clearance
to Furnace
Cabinet
(1526"
mm)
CLOSET DOOR
Standard Closet Installation
Provide min. 250 sq. in. (1613 cm2)
open free area in front or side wall
or in top of closet door
0" (0 mm) Side
Clearance
to Furnace
Cabinet
1
(25 "
mm)
CLOSET DOOR
3. Route 230V supply circuit(s) and 24V wiring to closet. See
Figure 19 (page 14) or Figure 20 (page 14) for appropriate
locations.
4. Position optional coil cabinet onto upflow stand or
mounting platform and secure with three or more
fasteners.
5. Position Appliance in upflow mode onto coil cabinet
and secure with two or more fasteners.
6. Use optional upflow duct connector or field supplied
connector to attach Appliance to overhead supply duct.
See Figure 15.
7. Install return air grille in closet preferably at same
level as upflow stand or below mounting platform. See
Figure 14.
Through-the-Floor Return Air System (Ducted)
1.Prepare Floor Opening(s):
a. Mark floor openings as shown in Figure 5 (page 7).
Provide minimum clearances at rear and left side
walls of closet for installation of Appliance and wiring.
b. Cut floor opening on outside edge of marked line
so that opening is slightly larger 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 Appliance.
2. If return air duct is made of combustible material, locate
a pan fabricated of non-combustible material with 1”
(25 mm) upturned flanges under Appliance return air
opening.
3. Route 230V supply circuit(s) and 24V wiring to closet. See
Figure 19 (page 14) or Figure 20 (page 14) for appropriate
locations.
Upflow Duct
Connector
Special 1" Clearance
Figure 13. Closet Installation
Furnace
Coil Cabinet
Air Filter
Braced
Mounting
Platform
WALL
Upflow Stand
Front
Grille
FLOOR
Non-combustible
Pan or
Enclosure
Figure 14. Over-the-Floor Return Air System
10
Figure 15. Over-the-Floor Return Air System with
Upflow Stand
4. Position optional coil cabinet over floor cutout and secure
with three or more fasteners.
5. Position Appliance onto coil cabinet and secure with
two or more fasteners.
6. Use optional upflow duct connector or field supplied
connector to attach Appliance to overhead supply duct.
See Figure 19 (page 14) or Figure 20 (page 14).
ELECTRICAL WIRING
WARNING:
ELECTRICAL SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury, death or property
damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Before servicing, disconnect all electrical
power to Appliance both poles.
• When servicing controls, label all wires prior
to disconnecting. Reconnect wires correctly.
• Verify proper operation after servicing.
It is recommended that the line voltage (230 VAC) to the
Appliance be supplied from a dedicated branch circuit
containing the correct fuse or circuit breaker for the
Appliance. For minimum circuit ampacity and maximum
over-current protection, see Table 7 and Table 9. See unit
wiring diagrams (Figure 25 (page 21), Figure 26 (page 22),
Figure 27 (page 23), Figure 28 (page 24) & Figure 29 (page 25))
for wiring details. Electrical components are shown in Figure
18 (page 13). Supply circuit requirements are listed below:
• -010 model is factory-wired for single-branch supply
circuit only.
• -012 models are factory-wired for single-branch supply
circuit (single-circuit kit factory installed). Dual-branch
circuit can be used by removing factory-installed
single-circuit kit. See Figure 16 (page 11).
• -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.
Connecting Supply Service Wires
Power entrance for all models may be through the right
side or through the bottom of the unit.
1. Remove right-hand control panel (when viewing in
downflow position).
2. Locate power supply knockouts in side of unit and in
bottom of unit. Remove appropriate plug(s) or knockout
opening applicable to selected wire size(s).
3. For Supply Service Wire installations through the top or
bottom of the appliance. Add bracket for metal thickness
increase for supply wire connections. See Figure 21.
CAUTION:
In order to avoid a hazard due to inadvertent
resetting of the THERMAL CUT-OUT, this
appliance must not be supplied through an
external switching device, such as a timer, or
connected to a circuit that is regularly switched
on and off by the utility.
• Electrical connections must be in compliance with all
applicable local codes and 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).
4. Install listed cable connector(s) in opening(s). If metalsheathed conduit is used for incoming power line(s),
provide an approved metal clamp on conduit and secure
it in entrance knockout.
CIRCUIT BREAKER
BRACKET
ON
60A
ON
60A
CIRCUIT BREAKER
WIRE ASSEMBLIES
(FACTORY INSTALLED)
OFF
OPTIONAL
SINGLE CIRCUIT
ADAPTOR KIT
SUPPLY SERVICE WIRE
CONNECTION WITH SINGLE
CIRCUIT ADAPTOR KIT
Figure 16. Optional Single Circuit Adaptor Kit
CIRCUIT BREAKER
BRACKET
OFF
ON
OFF
60A
ON
CIRCUIT BREAKER
WIRE ASSEMBLIES
(FACTORY INSTALLED)
60A
IMPORTANT NOTES
• Proper line voltage polarity must be maintained for
the control system to operate correctly.
• Circuit breakers installed in this unit provide
short-circuit protection of the internal wiring
and serve as a disconnect. The circuit breakers
DO NOT provide over-current protection of the
supply wiring and may be sized larger than the
branch circuit protection. Overcurrent protection
of the supply wiring is provided by the breaker
in the distribution panel and must be sized as
shown in Table 7 (page 19) and Table 9 (page 27).
To avoid personal injury or property damage,
make certain that the motor leads cannot
come into contact with non-insulated metal
components of the unit.
OFF
Line Voltage Wiring
WARNING:
SUPPLY SERVICE WIRE
CONNECTION WITHOUT SINGLE
CIRCUIT ADAPTOR KIT
Figure 17. Installation of Supply Service Wires
11
Thermostat / Low Voltage Connections
• The Appliance is designed to be controlled by a 24
VAC thermostat. The thermostat’s wiring must comply
with the current provisions of the NEC (ANSI/NFPA 70)
and with applicable local codes having jurisdiction.
• The thermostat should be mounted about 5 feet (1.5 m)
above the floor on an inside wall. DO NOT install the
thermostat on an outside wall or any other location
where its operation may be adversely affected by
radiant heat from fireplaces, sunlight, or lighting
fixtures, and convective heat from warm air registers
or electrical appliances. Refer to the thermostat
manufacturer’s instruction sheet for detailed mounting
information. See Figure 22 (page 15) for typical
thermostat connections.
Humidifier
The unit has an output to power a humidifier when the
blower is running during a call for heat. This output is rated
to 1.0 amp at 208V.
Dehumidification Options
The motor control board has a DHUM or D connection
(violet wire) that allows the system to increase the amount
of humidity that is removed from the circulating air. See
Figure 24 (page 20) This is accomplished by reducing the
CFM and allowing the cooling coil to become colder. This
will only occur when there is a call for cooling. There are
many ways that this can be electrically wired.
1. If the room thermostat incorporates a humidity sensor
and DHUM output, connect the DHUM on the thermostat
12
I
t
L
-
Standby is a Rotating Segment
Cooling Mode (Y input active)
Heating Mode (W input active)
Circulate Fan Mode (G input active)
Dehum Cooling Mode (DEHUM input active along with Y)
(one) A Motor Fault has Occurred (BMF active for more than
30 seconds)
(lower case t) Over Temperatures (The value of the TS input
has exceeded 80C all outputs are stopped.)
L
To minimize personal injury, the Appliance
cabinet must have an uninterrupted or unbroken
electrical ground. The controls used in this
Appliance require an earth ground to operate
properly. Acceptable methods include electrical
wire or conduit approved for ground service. Do
not use gas piping as an electrical ground!
C
H
F
d
CURRENT MODE
t
WARNING:
DISPLAY
CODE
I
Grounding
to the D terminal on the motor control board. See
Figure 24.
2. If using a separate humidistat, connect the DHUM & R
terminals on the humidistat to the D & R terminals on
the motor control board of the air handler. In this option,
the DHUM output of the humidistat must be set so it is
only closed when there is a call for dehumidification.
3. If a humidistat is not available, it is an acceptable option
to connect the R & D terminals on the motor control board
together with a field supplied wire. This option causes
the blower to run at a reduced CFM for 10 minutes after
a call for cooling. NOTE: If outdoor unit is a heat pump,
connect the O terminal to the D terminal.
d
F
H
C
5. Insert supply service wire(s) through cable connector(s)
and connect wires to circuit breakers (Figure 16 &
Figure 17). NOTE: To install single-circuit kit, perform
step 5. If single-circuit kit installation is not needed, go
to step 6. A spacer has been provided that must be
installed as a reinforcement where the whip/conduit
enters the unit. Break this spacer in half and use the
appropriate size.
6. To install optional 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 (31 in.-lbs. (35 N-m)
recommended).
7. Connect service ground wire(s) to grounding lug(s)
provided. See Figure 18 (page 13). One ground is required
for each supply circuit used.
Lockout (Ten (10) or more Motor Faults or Over Temperature
events have occurred. All outputs are set to off for one hour.
NOTE: Display code may be inverted depending on final installation
orientation.
Table 3. FSHE Motor Control Board Display Codes
Electronic Air Cleaner (EAC)
The unit has an output to power an electronic air cleaner
when the blower is running. This output is rated to 1.0 amp
at 208V. See Figure 23 (page 18).
Changing Blower Speed
NOTE TO INSTALLER
When the unit is installed, the heating and cooling
speeds must be set for that particular installation.
The installer is responsible for setting these speeds.
Blower speed is determined by the DIP switch settings
located on the unit control board. Pins 1-4 set the speed
for heating. Pins 5-8 set the speed for cooling/heat pump.
Refer to Table 6 (page 18) for allowable heating speeds.
See Table 4 (page 16) and Table 5 (page 17) for blower
performance data.
Installing Control Circuit Wiring
NOTE: Installation of at least a four-wire thermostat
circuit is required. However best practice is to use fivewire for future addition of a heat/cool thermostat. Any
unused thermostat leads must be properly capped. See
Figure 22 (page 15) for various thermostat connections.
1. Install the 24V control-circuit cable through plastic
bushing at either side of Appliance.
2. Route control circuit wiring to wall thermostat and outdoor
section, if installed.
START-UP & ADJUSTMENTS
Pre-Start Check List
√ Verify the polarity of the connections are correct,
the line voltage power leads are securely connected
and the Appliance is properly grounded. Refer to the
appropriate wiring diagram.
√ Verify the thermostat wires are securely connected
to the correct leads on the terminal strip of the circuit
board.
√ Check blower motor connectors for proper connection.
Start-up Procedures
1. Reinstall control box cover(s).
2. Switch circuit breaker(s) to the ON position.
3. Replace outer Appliance door.
4. Check all duct connections and tape for air leakage.
FIGURES & TABLES
Blower
Wheel
Motor
Assembly
Blower
Assembly
Filter
Filter
Retainer
Door
Panel
Circuit
Breaker
Transformer
Jumper for
Circuit
Breaker
DC Relay
Main Air
Limit
Ground Lug
Control
Board
Bracket
Backup
Limit
Right
Control
Door
Left
Control
Door
Control
Board
Figure 18. E7 Appliance Components
(Multi-Poise Shown)
13
13 1/2” (34.26 cm)
VentilAire Bracket
Attachment Location
TOP
VIEW
17” (43.15 cm)
Refrigerant Line
Knockout
(1 1/2” (3.81 cm) X 5” (12.69 cm))
T-Stat
(Ø 5/8” (1.59 cm))
20” (50.76 cm)
LEFT
SIDE
24 1/2” (62.18 cm)
FRONT
VIEW
T-Stat
(Ø 5/8” (1.59 cm))
Ø 2” (5.08 cm)
2 1/4”
(5.71 cm)
A.C. & H.P. Knockout
(4 1/4” (10.79 cm) X
3 3/4” (9.52 cm))
Electric Ø 1 1/8”
(2.86 cm)
29” (73.60 cm)
Ø 7/8”
(2.22 cm)
Ø 1 1/8” (2.86 cm)
2 5/16”
1 3/8”
(5.87 cm) (3.49 cm)
Optional Electric
Ø 5/8” (1.59 cm)
Tie-Down Tab
RIGHT
SIDE
Optional Electric
Ø 1” (2.54 cm)
11 3/4” (34.26 cm)
12 5/16”
(31.25 cm)
BOTTOM
VIEW
Figure 19. E7EM Physical Dimensions
13 1/2" (34.26 cm)
VentilAire Bracket
Attachment Location
(E7ED)
TOP
VIEW
17" (43.15 cm)
20" (50.76 cm)
24 5/8" (62.50 cm)
RIGHT
SIDE
LEFT
SIDE
T-STAT
5/8" (1.59 cm)
2" (5.08 cm)
FRONT
VIEW
T-STAT
5/8" (1.59 cm)
2 1/4" (5.71 cm)
LEFT SIDE
60 5/8"
(153.87 cm)
7/8"
(2.22 cm)
1 1/8"
(2.86 cm)
TIE-DOWN TAB
OPTIONAL
ELECTRIC
7/8" (2.22 cm)
A.C & H.P. KNOCKOUT
(4 1/4" (10.79 cm) X
3 3/4" (9.52 cm))
2 5/16"
(5.87 cm)
OPTIONAL
ELECTRIC
1" (2.54 cm)
11 3/4"
(29.82 cm)
12 5/16" (31.25 cm)
BOTTOM
VIEW
Figure 20. E7EU & E7ED Physical Dimensions
14
ELECTRIC
1 1/8"
(2.86 cm)
RIGHT SIDE
1 7/16" (3.65 cm)
Self Tapping
Screws
Electric Heater Kit
Supply Wire
Bracket
Electrical
Knockouts
Left Control
Door
Right Control
Door
Blower
Assembly
Filter
Filter Retainer
Figure 21. E7 Supply Wire Bracket
13 1/2”
(34.26 cm)
24 3/4”
(62.82 cm)
VentilAire Bracket
Attachment Location
17” (43.15 cm)
6”
(15.23 cm)
4 3/8”
(11.10 cm)
16 1/2”
(41.88 cm)
LEFT
SIDE
2”
(5.08 cm)
TOP
VIEW
14 7/8”
(37.75 cm)
16 1/2”
(41.88 cm)
VentilAire Bracket
Attachment Location
19 7/8” (50.44 cm)
FRONT
VIEW
20”
(50.76 cm)
RIGHT
SIDE
17 3/8”
(44.10 cm)
3 3/4”
(9.52 cm)
NOTE: VentilAire accessory is only
attached to either left or right side
of the stand, not both.
BOTTOM
VIEW
Figure 22. E7 Appliance Upflow Stand Dimensions
15
Airflow Data
AIRFLOW (CFM)
MODEL
NUMBER
E7E*-B0**K
MOTOR SWITCH
SETTINGS
(0=OFF, 1=ON)
1/5
2/6
3/7
4/8
0.1
CFM
0.2
CFM
0.3
CFM
0.4
CFM
EXTERNAL STATIC PRESSURE (IN. W.C.)
0.5
CFM
0.6
CFM
0
0
0
0
685
640
606
560
513
460
1
0
0
0
770
727
692
648
599
552
0
1
0
0
854
815
779
737
685
645
1
1
0
0
939
902
865
825
771
737
0
0
1
0
1,012
974
938
899
850
813
1
0
1
0
1,084
1,047
1,011
973
930
888
0
1
1
0
1,157
1,119
1,084
1,047
1,009
964
1
1
1
0
1,197
1,166
1,130
1,093
1,056
1,017
0
0
0
1
1,245
1,215
1,178
1,143
1,105
1,066
1
0
0
1
1,293
1,263
1,225
1,192
1,154
1,114
0
1
0
1
1,344
1,312
1,278
1,242
1,206
1,169
1
1
0
1
1,394
1,361
1,330
1,291
1,257
1,223
0
0
1
1
1,434
1,401
1,369
1,332
1,299
1,267
1
0
1
1
1,473
1,441
1,408
1,373
1,340
1,311
0
1
1
1
1,514
1,483
1,451
1,417
1,386
1,355
1
1
1
1
1,555
1,525
1,494
1,460
1,431
1,398
AIRFLOW (m3/h)
MODEL
NUMBER
E7E*-B0**K
MOTOR SWITCH
SETTINGS
(0=OFF, 1=ON)
1/5
2/6
3/7
4/8
25
m3/h
50
m3/h
75
m3/h
100
m3/h
125
m3/h
150
m3/h
0
0
0
0
1164
1087
1030
951
872
782
1
0
0
0
1308
1235
1176
1101
1018
938
0
1
0
0
1451
1385
1324
1252
1164
1096
EXTERNAL STATIC PRESSURE (PA)
1
1
0
0
1595
1533
1470
1402
1310
1252
0
0
1
0
1719
1655
1594
1527
1444
1381
1
0
1
0
1842
1779
1718
1653
1580
1509
0
1
1
0
1966
1901
1842
1779
1714
1638
1
1
1
0
2034
1981
1920
1857
1794
1728
0
0
0
1
2115
2064
2001
1942
1877
1811
1
0
0
1
2197
2146
2081
2025
1961
1893
0
1
0
1
2283
2229
2171
2110
2049
1986
1
1
0
1
2368
2312
2260
2193
2136
2078
0
0
1
1
2436
2380
2326
2263
2207
2153
1
0
1
1
2503
2448
2392
2333
2277
2227
0
1
1
1
2572
2520
2465
2407
2355
2302
1
1
1
1
2642
2591
2538
2481
2431
2375
NOTES:
1. Motor switch settings for heating speeds use HEAT switches 1, 2, 3, and 4. For cooling speeds use COOL switches 5, 6, 7, and 8.
2. Data is shown with filter
Table 4. E7 Airflow Data
16
E7E*-B0**K
10
12
15
17
20
23
MAXIMUM HEATING AIRFLOW SETTING
E7EM
E7ED
DOWNFLOW
UPFLOW
DOWNFLOW
MH
RES
MH
RES
MH
RES
0101
0001
0011
0101
0101
0101
0001
0101
0101
0011
0001
0011
0001
E7EU
UPFLOW
MH
RES
0101
0101
0011
NOTES:
1. MH and Res represent Manufactured Housing and Residential (modular home) applications, respectively
2. To comply with government mandated efficiency standards, speed settings with higher CFM values than listed in this table are not allowed
in Electric resistance heat only mode
Table 5. Maximum Allowable Heat Settings
The maximum heat rise at 0.4” w.c. (100 Pa) external static
pressure (ESP) for simultaneous Heat Pump and Electric
Resistance operation is 75ºF (41.7ºC). To determine the
blower minimum speed* for this mode operation, use the
calculation below; an example of E7E*-023* and a 4 ton
heat pump is also provided in both metric and imperial
calculations.
* During a simultaneous Y and W call, the control board will output the highest of the two speeds, so the “blower
minimum speed” can be either dipswitches 1-4 (HEAT) or 5-8 (COOL). If calculated airflow does not coordinate to an
exact blower speed, select the next highest airflow setting.
17
Electrical Data & Diagrams
4-WIRE THERMOSTAT
5-WIRE THERMOSTAT
GREEN
VIOLET
TO
A/C
GREEN
RED
GREY
WHITE
YELLOW
VIOLET
G
WIRE
NUTS
TO
A/C
RED
WIRE
NUTS
R
Y
W
G
GREY
R
YELLOW
C
WHITE
Y
W
TO FURNACE CONTROL WIRING
TO FURNACE CONTROL WIRING
HEAT PUMP THERMOSTAT
G
R
W2
C
E
Y
O
TO
H/P
YELLOW
GREY
WHITE
RED
GREEN
WIRE
NUTS
VIOLET
TO FURNACE CONTROL WIRING
NOTE: For optional dehumidifcation violet wire connection, refer to the Dehumidication Options section.
Figure 23. E7 Thermostat Connection
APPLIANCE MODELS E7-
SUPPLY
VOLTAGE
010K
012K
015K
017K
020K
023K
Number of Heating elements
2
2
3
3
4
4
Rated Heating Output, Btuh
31,000
36,000
47,000
51,000
63,000
68,000
9.2
10.7
13.8
14.9
18.4
19.8
9.6
11.1
14.2
15.3
18.8
20.2
26,000
30,000
38,000
42,000
51,000
55,000
7.5
8.7
11.3
12.2
15
16.2
7.9
9.1
11.7
12.6
15.4
16.6
Heating Element total kW
Watts (Total kw, Heating
Elements & Blower)
230V~ 60Hz
1 Phase
Rated Heating Output, Btuh
Heating Element total kW
Watts (Total kw, Heating
Elements & Blower)
208V~ 60Hz
1 Phase
Test ESP, in. w.c. Max
0.4
Optional Cooling Available with factory installed
blower
Optional Heat Pump Available with factory
installed blower
Air Filter (Standard)
Appliance Dimensions
2.0 - 4.0 ton
2.0 - 4.0 ton
18” (45.7 cm) x 20” (50.8 cm) x 1” (2.54 cm) (nominal)
Multi-Poise
Width-20” (508mm), Height-29” (737mm), Depth-24 1/2” (623mm)
Upflow/
Downflow
Width-20” (508mm), Height-60 5/8” (1546mm), Depth-24 1/2” (623mm)
NOTE: Heating output rated at listed voltage.
Table 6. Unit Specifications
18
230V~
MODEL
NUMBER
E7E*-
SUPPLY
CIRCUIT
B010K
B012K
B015K
B017K
B020K
B023K
208V~
TOTAL
AMPERES
MAXIMUM
OVERCURRENT
RATING
MINIMUM
CIRCUIT
AMPACITY
CIRCUIT
BREAKER
SIZE
TOTAL
AMPERES
MAXIMUM
OVERCURRENT
RATING
MINIMUM
CIRCUIT
AMPACITY
CIRCUIT
BREAKER
SIZE
Single
43.7
48.5
54.7
60
39.9
44.7
49.9
50
Single
50.1
54.9
62.6
70
45.7
50.4
57.1
60
Dual "A"
27.0
31.7
33.7
35
24.7
29.5
30.9
35
Dual "B"
23.2
23.2
28.9
30
20.9
20.9
26.2
30
Single
63.7
68.4
79.6
80
58.0
62.7
72.5
80
Dual "A"
43.7
48.5
54.7
60
39.9
44.7
49.9
50
Dual "B"
20.0
20.0
25.0
25
18.1
18.1
22.6
25
Single
68.5
73.2
85.6
90
62.3
67.1
77.9
80
Dual "A"
43.1
43.1
53.9
60
39.0
39.0
48.8
50
Dual "B"
25.4
30.1
31.7
35
23.3
28.1
29.1
30
Single
83.7
88.4
104.6
110
76.0
80.8
95.0
100
Dual "A"
43.7
48.5
54.7
60
39.9
44.7
49.9
50
Dual "B"
39.9
39.9
49.9
50
36.1
36.1
45.1
50
Single
90.1
94.8
112.6
125
81.8
86.6
102.3
110
Dual "A"
43.7
48.5
54.7
60
39.9
44.7
49.9
50
Dual "B"
46.3
46.3
57.9
60
41.9
41.9
52.4
60
NOTE: Wire size must be in accordance to the applicable revision of the NEC and all other applicable codes.
Table 7. E7 Electrical Specifications
19
L2
L2
L1
L1
POWER
ECM BLOWER
3A Fuse
EHEAT
Display Codes
Y
D W
G
C
R
Figure 24. E7 Motor Control Board
20
HUM
EAC
ON
COOL
1 2 3 4 5 6 7 8
HEAT
8
DIP Switches
t
C
H
F
-
L
I
H
Figure 25. E7E*-*010K Models
21
L
I
-
L
I
t
F
H
C
Figure 26. E7E*-*012K Models
22
t
d
C
F
Figure 27. E7E*-*015K Models
23
L
-
L
Figure 28. E7E*-*017K Models
24
C
-
d
C
F
d
Figure 29. E7E*-*020K & E7E*-*023K Models
25
CONTROL SIGNAL
& MODE
OPERATION
TOTAL
KW
BOARD ACTION
Stage 1 Heat on immediately
10
HEAT Blower on after 3 second delay
Stage 2 heat on after 10 second delay
Stage 1 Heat on immediately
12
HEAT Blower on after 3 second delay
Stage 2 heat on after 10 second delay
Stage 1 Heat on immediately
15
HEAT Blower on after 3 second delay
Stage 2 heat on after 10 second delay
Stage 3 heat on after 20 second delay
Stage 1 Heat on immediately
W
HEAT
ON
17
HEAT Blower on after 3 second delay
Stage 2 heat on after 10 second delay
Stage 3 heat on after 20 second delay
Stage 1 Heat on immediately
HEAT Blower on after 3 second delay
20
Stage 2 heat on after 10 second delay
Stage 3 heat on after 20 second delay
Stage 4 heat on after 30 second delay
Stage 1 Heat on immediately
HEAT Blower on after 3 second delay
23
Stage 2 heat on after 10 second delay
Stage 3 heat on after 20 second delay
Stage 4 heat on after 30 second delay
OFF
-
Heat stages off immediately
Blower turns off after 15 second delay
Stage 1 Heat on immediately
10
Blower on after 3 second delay (HEAT or COOL speed, whichever is greater)
Stage 2 heat on after 10 second delay
Stage 1 Heat on immediately
12
Blower on after 3 second delay (HEAT or COOL speed, whichever is greater)
Stage 2 heat on after 10 second delay
Stage 1 Heat on immediately
15
Blower on after 3 second delay (HEAT or COOL speed, whichever is greater)
Stage 2 heat on after 10 second delay
Stage 3 heat on after 20 second delay
Stage 1 Heat on immediately
W&Y
AUX HEAT
ON
17
Blower on after 3 second delay (HEAT or COOL speed, whichever is greater)
Stage 2 heat on after 10 second delay
Stage 3 heat on after 20 second delay
Stage 1 Heat on immediately
Blower on after 3 second delay (HEAT or COOL speed, whichever is greater)
20
Stage 2 heat on after 10 second delay
Stage 3 heat on after 20 second delay
Stage 4 heat on after 30 second delay
Stage 1 Heat on immediately
Blower on after 3 second delay (HEAT or COOL speed, whichever is greater)
23
Stage 2 heat on after 10 second delay
Stage 3 heat on after 20 second delay
Stage 4 heat on after 30 second delay
Table 8. Control Board Operation
26
CONTROL SIGNAL
& MODE
OPERATION
TOTAL
KW
W&Y
AUX HEAT
(Continued)
OFF
-
G
FAN
Y
HEAT PUMP AND COOL
Y&D
COOL WITH DEHUM
BOARD ACTION
Heat stages off immediately
Blower turns off after 15 second delay
ON
-
Blower on immediately (35% of COOL)
OFF
-
Blower off immediately
ON
-
COOL blower on immediately
OFF
-
COOL blower off after 40 second delay
ON
-
OFF
-
70% COOL blower on immediately
100% COOL blower after 10 minutes
COOL blower off after 40 second delay
Table 8. Control Board Operation - Continued
240V~
MODEL
NUMBER
E7E*-
010H*
012H*
015H*
017H*
020H*
023H*
SUPPLY
CIRCUIT
TOTAL
AMPERES
MAXIMUM
OVERCURRENT
RATING
MINIMUM
CIRCUIT
AMPACITY
CIRCUIT
BREAKER
SIZE
Single
Single
Dual "A"
Dual "B"
Single
Dual "A"
Dual "B"
Single
Dual "A"
Dual "B"
Single
Dual "A"
Dual "B"
Single
Dual "A"
Dual "B"
45
52
28
24
66
45
21
71
45
26
87
45
42
94
45
48
50
56
32
24
71
50
21
76
45
31
91
50
42
98
50
48
57
65
35
30
83
57
26
89
56
33
109
57
52
117
57
60
60
70
35
35
90
60
30
90
60
35
110
60
60
125
60
60
NOTE: Wire size must be in accordance to the applicable revision of the
NEC and all other applicable codes.
Table 9. Electrical Specifications of Legacy 240V E7 Appliances for Reference
27
INSTALLATION CHECKLIST
ELECTRICAL SYSTEM
INSTALLER NAME:
CITY:
STATE:
Electrical connections tight?
YES
NO
Line voltage polarity correct?
YES
NO
Supply Voltage:...................................................................... VOLTS
INSTALLATION ADDRESS:
CITY:
STATE:
UNIT MODEL #
UNIT SERIAL #
Has the thermostat been calibrated?
YES
NO
Is the thermostat level?
YES
NO
Is the Appliance grounded properly?
YES
NO
Is the heat anticipator setting
correct?
YES
NO
COMBUSTION AIR & VENTING SYSTEM
Minimum clearances as shown
in Table 1 (Page 3)?
YES
NO
Is there adequate fresh air supply
for ventilation?
YES
NO
Has the owner’s information been
reviewed with the home-owner?
YES
NO
Filter(s) secured in place?
YES
NO
Filter(s) clean?
YES
NO
Has the literature package been
left near the Appliance?
YES
NO
Complies with H.U.D. Manufactured Home Construction & Safety Standards.
Specifications & illustrations subject to change without notice or incurring obligations (04/24).
O’Fallon, MO, © Nortek Global HVAC LLC 2024. All Rights Reserved.
10485070
(Replaces 1045341B)
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