Yumpu B5BV Series User manual

Electric Furnace
B5BV Series
DO NOT DESTROY. PLEASE READ CAREFULLY & KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
IMPORTANT
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 furnace or failure to follow safety warnings could result
in serious injury, death, or property damage.
Please read all instructions carefully before starting the installation. 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. If a problem occurs, check the instructions and follow recommendations given.
If these suggestions don’t eliminate your problem, call your servicing contractor. Return this
manual to the customer’s package for future reference.
For HUD approved installations in manufactured homes and modular homes
INSTALLATION INSTRUCTIONS

2
IMPORTANT SAFETY INFORMATION .......................3
GENERAL INFORMATION..........................................3
Requirements & Codes .............................................3
About the Electric furnace .........................................3
Mounting Applications ...............................................3
Before You Install this Appliance ...............................4
Locating the Electric furnace.....................................4
Minimum Clearances.................................................4
CIRCULATING AIR SUPPLY.......................................5
Return Air Connections .............................................5
Supply Air Connections.............................................5
Unconditioned Spaces ..............................................6
Acoustical Duct Work ................................................6
Air Filters ...................................................................6
Ventilaire III or IV Air Quality Package.......................6
ELECTRIC FURNACE INSTALLATION ......................7
Upflow Installations ...................................................7
Downflow Installations...............................................7
Plenum Connector Installation ...............................7
Horizontal Installations ..............................................8
A/C or H/P Coil Installation........................................9
ELECTRICAL CONNECTIONS ...................................9
Pre-Electrical Checklist .............................................9
Line Voltage...............................................................9
Single Circuit Adaptor Kit .....................................10
Dual Supply Circuits.............................................10
Control Board ..........................................................10
Twinning ...............................................................10
Thermostat / Low Voltage Connections...................10
Grounding................................................................10
STARTUP & ADJUSTMENTS ...................................11
Before You Start the Unit .........................................11
Air Circulation Check...............................................11
Running the Blower Continuously ........................11
System Cooling....................................................11
System Heating....................................................11
Turning the Blower Off..........................................11
Blower Configurations .............................................11
Determining Nominal System Capacity ...............11
Proper Blower Speed for Multi Speed Units.........11
UNIT MAINTENANCE................................................12
TROUBLESHOOTING ...............................................12
FIGURES & TABLES .................................................13
Figure 9. B5BV Physical Dimensions...................13
Figure 10. Electric furnace Components..............14
Airflow Data.............................................................15
Table 3. B5BV Airflow Data ..................................15
Electrical Information...............................................15
Table 4. B5BV MCA & MOP Data ........................15
Figure 11. B5BV W.D. PSC Motor (8 or 10 kW) ...16
Figure 12. B5BV W.D. X13 Motor (8 or 10 kW) ....17
Figure 13. B5BV W.D. (15 kW) .............................18
Figure 14. B5BV W.D. X13 Motor (20 kW)............19
Figure 15. Typical Thermostat Connections .........20
INSTALLATION / PERFORMANCE CHECKLIST .....24
TABLE OF CONTENTS

3
IMPORTANT SAFETY INFORMATION
NOTE TO 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.
WARNING:
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failure to follow safety warnings exactly could
result in serious injury or property damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Beforeservicing,disconnectallelectricalpower
to electric furnace.
• Whenservicingcontrols,labelallwiresprior
to disconnecting. Reconnect wires correctly.
• Verifyproperoperationafterservicing.
GENERAL INFORMATION
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 for
special installation requirements.
• Thisequipment contains nitrogengas.Installationor
servicing should only be performed by qualified trained
personnel thoroughly familiar with this type equipment.
• Electrical power wiring must be made in accordance
with all applicable local codes and ordinances, and with
the current revision of the National Electric Code (ANSI/
NFPA 70). For Canadian installations, the electrical
connections and grounding shall comply with the current
Canadian Electrical Code (CSA C22.1 and/or local
codes).
• Installationofequipmentmayrequirebrazingoperations.
Installer must comply with safety codes and wear
appropriate safety equipment (safety glasses, work
gloves, fire extinguisher, etc.) when performing brazing
operations.
• Install this unit only in a location and position as
specified on page 4.This unit is designed only for Indoor
installations and should be located with consideration
of minimizing the length of the supply and return ducts.
Refer to the rating plate or Table 3 (page 15) for proper
airflow data.
• 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.
About the Electric furnace
This appliance has been tested and certified by AHRI for
capacity and efficiency and will provide many years of safe
and dependable comfort, providing it is properly installed
and maintained. Abuse, improper use, and/or improper
maintenance can shorten the life of the appliance and
create unsafe hazards.Please read all instructions before
installing the unit.
The B5BV Series electric furnace is approved for use
in HUD code manufactured homes (HUD Manufactured
Home Construction and Safety Standard (Title 24, Part
3280) and other modular home applications.
B5BV Series electric furnaces are supplied with factory
installed electric heat. Only approved heat-pump/air
conditioning coils may be installed in the field. Unless
otherwise noted in the instructions, only factory authorized
kits or accessories may be used when modifying this
product.
Mounting Applications
Vertical only electric furnaces are factory ready for upflow
applications. These units may be applied in downflow
or horizontal left and right discharge applications when
applied with the appropriate field kit.
Through-the-floor installations require a 1/4” thick
noncombustible resilient gasket to be used whenever the
supply or return air ducts pass through the floor.The gasket
should be positioned between the duct, unit, and floor.

4
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.
√The heating load of the area must be calculated
and a system of the proper capacity selected. It is
recommended that the area to be heated be completely
insulated and vapor sealed.
√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 static pressure drop of the coil, filter, and duct
work do not exceed the air delivery specs of the electric
furnace.
Locating the Electric furnace
• Surveythejobsitetodeterminethebestlocationfor
mounting 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 listed in Figure 1. Physical
dimensions for this electric furnace are also shown in
Figure 9 (page 13).
• Theelectricfurnaceshouldbeinstalledbeforerouting
the refrigerant tubing.
• This unit should be located with consideration of
minimizing the length of the supply and return ducts.
Refer to the rating plate or Table 3 (page 15) for proper
circulating airflow data.
Figure 1. Minimum Unit Clearances
INSTALLATION CLEARANCES
Left Side......... 0 Inches Right Side ...... 0 Inches
Back............... 0 Inches Front........... †See Notes
†
NOTES:
Closet or Alcove Installations:
• Allow24in.minimumclearancefromfrontofunitto
nearest wall or partition for servicing. Recommended
clearance is 36 in.
• Areturnairgrillshouldbeinstalledinthedoorora
partially louvered door across the opening for proper
air circulation. Provide at least 235 in2free opening
for return air for B-cabinet models and 300 in2for
C-cabinet models. A fully louvered closet door is
strongly recommended for both installation types
REAR
RIGHT
SIDE
LEFT
SIDE
FRONT
Minimum Clearances
• This appliance must be installed in accordance with
clearances listed in Figure 1.The electric furnace must
be installed with ample clearance for easy access to the
air filter, blower assembly, heater assembly, controls,
and vent connections.
• Sufcientclearanceforunobstructedairowthrougha
louvered door must be maintained in order to achieve
rated performance.
• Allelectricheaterkitslessthan20kwareapprovedfor
use in electric furnace installations with zero-clearance
to combustibles at any blower speed.For horizontal and
upflow configuration, B5 electric furnaces equipped with
20 kw electric heater kits are approved for installation
with zero clearance to combustibles at any blower speed.

5
Return Air Connections
For each application in the USA, the home manufacturer
shall comply with all of the following conditions to have
acceptable return air systems for closet installed forced
air heating appliances:
• Regardlessofthelocation,thereturnairopeningintothe
closet shall not be less than specified in the appliance’s
listing.
• Meansshallbeprovidedtopreventinadvertentclosure
by a flat object placed over the return air opening when
it is located in the floor of the closet (versus the vertical
front or side wall).
• The cross-sectional area of the return duct system
leading into the closet shall not be less than 390 in2.
• Thetotalfreeareaofopeningsintheoororceiling
registers serving the return air duct system must be at
least 352 in2. At least one register should be located
where it is not likely to be covered by carpeting, boxes
and other objects.
• Materialslocatedinthereturnductsystemmusthavea
flame spread classification of 200 or less.This includes
a closet door if the furnace is in a closet.
• Test thenegativepressureintheclosetwith theair-
circulating fan operating at high speed and the closet
closed.The negative pressure is to be no more negative
than minus 0.05 inch water column.
• For oor return systems, the manufactured home
manufacturer shall affix a prominent marking on or
near the appliance where it can be easily read when
the closet door is open. The marking shall read:
CAUTION:
HAZARD OF ASPHYXIATION: Do not cover or
restrict return air opening.
• Thereturnairopeningcanbelocatedinaclosetdooror
a sidewall. If the return air opening is directly adjacent
to the side (or front) of the electric furnace, 6” minimum
clearance must be provided between the side of the
electric furnace and the return air opening. If no part
of the return air opening is directly adjacent to the unit
no clearance is required.
• In applications where the supply ducts carry heated
air to areas outside the space where the furnace is
installed, the return air must be delivered to the furnace
by duct(s) secured to the furnace casing, running full
size and without interruption.
Supply Air Connections
• The supply duct system must be designed so that the
external static pressure of the furnace does not exceed
the listed static pressure shown on the furnace rating
plate. The supply air must be delivered to the heated
space by duct(s) secured to the furnace casing, running
full length and without interruption.
CIRCULATING AIR SUPPLY
WARNING:
All return ducts must be secured to the electric
furnace using appropriate methods. All return
ducts must be adequately sealed.When return
air is provided through the bottom of the unit,
the joint between the electric furnace 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.
• Plenums and air ducts should be installed in
accordance with the standards of the National Fire
Protection Association Standard for Installation of
Air Conditioning Systems (NFPA 90A), Standard for
Installation of Residence Type Warm Air Heating
and Air Conditioning Systems (NFPA 90B), and all
applicable local codes. NFPA publications are available
by writing to: National Fire Protection Association,
Batterymarch Park, Quincy, ME 02269 or visit
www.NFPA.org online.
• Designtheductworkaccordingtomethodsdescribed
by the Air Conditioning Contractors of America (ACCA).
Air ducts must be aluminum, tin plate, galvanized sheet
steel, or other approved materials for outlet or return
air ducts. Snap-Lock or Pittsburgh-Lock seams are
preferred. All other types of seams must be made tight
to prevent leakage.
• This unit is designed only for use with a return and
supply duct.The ducts should be appropriately sized to
the capacity of the electric furnace to ensure its proper
airflow rating. Refer to the rating plate or Table 3 (page
15) for proper circulating airflow data.
• Use transition ttings if the supply and/or return air
openings of the unit do not match the duct openings.
These transitions should be dimensioned in accordance
with standard practice as specified in the ASHRAE
recommendations for duct transitions.
• Flexibleconnectorsshouldbeusedbetweentheunit
and the ductwork to prevent transmission of vibration
from the unit to the structure. Heat resistant material
must be used for the flexible connector at the supply
air end of the unit.
• It is good practice to seal all connections and joints
with industrial grade sealing tape or liquid sealant.
Requirements for sealing ducts vary from region to
region.Consult with local codes for requirements specific
to your area.

6
Unconditioned Spaces
All duct work passing through unconditioned space must
be properly insulated to minimize duct losses and prevent
condensation. Use insulation with an outer vapor barrier.
Refer to local codes for insulation material requirements.
Acoustical Duct Work
• Certain installations may require the use of acoustical
lining inside the supply duct work. Acoustical insulation
must be in accordance with the current revision of the
Sheet Metal and Air Conditioning Contractors National
Association (SMACNA) application standard for duct
liners.Duct lining must be UL classified batts or blankets
with a fire hazard classification of FHC-25/50 or less.
• Fiberductworkmaybeusedinplaceofinternalduct
liners if the fiber duct work is in accordance with the
current revision of the SMACNA construction standard
on fibrous glass ducts. Fibrous duct work and internal
acoustical lining must be NFPA Class 1 air ducts when
tested per UL Standard 181 for Class 1 ducts.
• Damping ducts, flexible vibration isolators, or pleated
media-style filters on the return air inlet of the electric
furnace may be used to reduce the transmission of
equipment noise eminating from the electric furnace.
These treatments can produce a quieter installation,
particularly in the heated space. However, they can
increase the pressure drop in the duct system. Care
must be taken to maintain the proper maximum pressure
rise across the electric furnace, temperature rise and
flow rate. This may mean increasing the duct size and/
or reducing the blower speed. These treatments must
be constructed and installed in accordance with NFPA
and SMACNA construction standards. Consult with
local codes for special requirements. For best sound
performance, be sure to install all the needed gaskets
and grommets around penetrations into the electric
furnace, such as for electrical wiring.
Air Filters
B5BV series electric furnaces are not supplied with an
air filter when shipped from the factory.The installer must
provide a high velocity filter that is appropriately sized
to the return air duct opening or filter rack located in the
bottom of the unit. Accessing the filter does not require
tools and can be removed from the front of the unit by
removing the filter door. See Unit Maintenance (page 12)
for filter sizes and installation information.
WARNING:
Never operate the electric furnace without a
filter or with doors removed. Dust and lint can
build up on internal components, resulting
in loss of efficiency, equipment damage, and
possible fire.
VentilAire III
VentilAire IV
Figure 2. VentilAire III & IV
Ventilaire III or IV Air Quality Package (Accessory)
The B5BV electric furnace has a cutout on each side of
the cabinet for ventialtion air. The Ventilaire air quality
packages introduce outdoor air into the living space during
furnace blower operation.The VentilAire IV also serves to
exhaust moist and/or hot air from the attic space. These
packages meet the ventilation requirements as outlined
in H.U.D. Standard Part 3280.103 (b) (2). See Figure 2
for typical installation.
CAUTION:
MAINTAIN 2 1/2” MINIMUM CLEARANCE
BETWEENFLUEPIPEANDFLEXDUCT.FAILURE
TO COMPLY WITH THIS RESTRICTION COULD
CAUSE EQUIPMENT DAMAGE. VENTILAIRE III
ILLUSTRATED OTHER LISTED VARIATIONS
AVAILABLE. CHECK WITH MANUFACTURER.
Use adaptor (part number 914427) with Ventilaire III or
IV to supply the proper amount of ventilation air. The
VentilAire connections must be made for the system to
conform to H.U.D. rules. Do not leave disconnected after
servicing or adding A/C to the system.Complete installation
instructions are supplied with each air quality package.

7
ELECTRIC FURNACE INSTALLATION
These Installation procedures are suggested for typical
electric furnace installations. Since all installations are
different from each other, the sequence of these steps may
differ from the actual installation. Only qualified HVAC
technicians should install this furnace.
The B5BV series electric furnace is shipped ready for
vertical upflow installation and is approved for attic,
basement, alcove/closet or crawlspace installation with
zero clearance to combustibles. See Figure 1 (page 4)
for required installation clearances. This appliance is
only for indoor use.
• RemovetheshippingcrateandUser’sManualfromthe
equipment.
• Theunitmustbeleveledatinstallationandattachedto
a properly installed duct system.
• The surface that the electric furnace is mounted on
must provide sound physical support of the unit.
• Theelectricfurnacemustbeinstalledsothatallelectrical
components are protected from water.
• Ifalouvereddoorisinstalledacrossthefrontofthis
unit, the appliance must be mounted flush or behind
front edge of finished wall.
Upflow Installations
All electric furnaces are factory shipped, ready for upflow
installation.All return air must enter from the bottom of the
unit when installed in the upflow configuration. A typical
upflow unit is shown in Figure 3.
Position the electric furnace on top of the return air duct
and secure together with sheet metal screws.The screws
must penetrate the sheet metal cabinet and duct.Tape or
seal all seams if required by local code.
To attach the supply air duct to the electric furnace, bend
the perforated flanges (Figure 5, page 8) upward 90° with
a pair of wide duct pliers. Position the duct on top of the
electric furnace and secure together with sheet metal
screws. Make sure the screws penetrate the sheet metal
casing and flanges. Tape or seal all seams if required by
local code.
NOTE: If an upflow pedestal mounting stand is fabricated
in the field, the stand must be constructed strong
enough to support the unit with all accessories installed
(approximately 130 lbs. for B-cabinet models and 200 lbs.
for C-cabinet models). The construction of the pedestal
stand must also allow for at least 235 in2free opening (300
in2for C-cabinet models) in the application.Field fabricated
upflow pedestal mounting stands must be constructed of
noncombustible materials. Position the electric furnace
on top of the mounting stand and secure together with
sheet metal screws.The screws must penetrate the sheet
metal cabinet and duct.Tape or seal all seams if required
by local code.
Downflow Installations
B5BV electric furnaces can be converted to downflow
operation by flipping an upflow unit 180°. A typical
installation of the unit in a downflow application is shown
in Figure 3.
NOTE: Downflow installations require the use of a plenum
connector (or its equivalent) if the supply air ducts pass
through the floor of the structure. This factory supplied
accessory must be installed in the floor cavity and attached
to the supply air duct before the downflow unit is installed.
Available plenum connectors for all B5BV electric furnaces
are listed in Table 1.All return air in downflow applications
must enter through the top of the unit.
Figure 3. Installation Configurations
Return
Air
Return
Air
UPFLOW
DOWNFLOW
Return
Air
HORIZONTAL RIGHT
Return
Air
HORIZONTAL LEFT
Table 1. Optional Accessory Kits
Description Cabinet Size
B C
Downflow Plenum Connector, 6.25” 913840 914969
Downflow Plenum Connector, 8.25” 913841 914970
Downflow Plenum Connector, 10.25” 913842 914971
Upflow Pedestal Mounting Stand 913872 913873
Downflow Coil Adaptor 919321 919322
*919323
* Use when installing B width coil in C width cabinet

8
Position the electric furnace on top of the plenum connector
and secure together with sheet metal screws.The screws
must penetrate the sheet metal cabinet and plenum
connector.Tape or seal all seams if required by local code.
Plenum Connector Installation
The plenum connector is designed for use with trunk ducts
having a minimum width of 12”. If sufficient space is not
available to adequately bend and secure duct tabs it may
be necessary to attach the connector to the duct using
sheet-metal fasteners and seal with an approved foil tape.
The connector may be field constructed but must meet
requirements as listed in the unit installation instructions.
1. Measure and mark the outline of the cut-out on the
floor. See Figure 4 for cutout dimensions.
IMPORTANT!: Cut-outs in the floor and ductwork must
be carefully located to avoid misalignment of the furnace
and supply / return air ducts.
2. Cut out the floor opening.
NOTE:To allow some clearance for installing the plenum
connector, cut the opening 1/16” larger than the actual
cutout drawn.
3. Center the plenum connector in the floor opening with
bottom tabs resting on top of the supply air duct.
4. Mark the cut-out area on the supply air duct by tracing
around the connector tabs of the plenum connector.
5. Remove the plenum connector and cut out the marked
area of the supply air duct.
NOTE:To allow some clearance for installing the plenum
connector, cut the opening 1/4” larger the actual cutout
drawn.
6. Install the duct connector back in the floor opening with
the bottom tabs extending into the supply air duct. See
Figure 6.
7. Secure the plenum connector to the wood floor with
appropriate size screws.
8. Bend the connector tabs on the bottom of the plenum
connector upwards and as tight as possible against the
supply air duct. See Figure 7.
9. Seal all connections with industrial grade sealing tape
or liquid sealant. Requirements for sealing ductwork
vary from region to region.Consult with local codes
for requirements specific to your area.
Horizontal Installations
The B5BV series electric furnace can be installed
horizontally in an attic, basement, crawl space or alcove.
A typical horizontal unit is shown in Figure 3.It can also be
suspended from a ceiling in a basement or utility room in
either a right to left airflow or left to right airflow as shown
in Figure 8 (page 9). A horizontal accessory kit is required
for horizontal applications. Instructions for installing the
kit are included in the kit.
Plenum
Connector
Connector
Tabs
Supply
Air Duct
Wood Floor
Figure 6. Duct Connector Installed
DUCT CONNECTOR
SUPPLY
AIR DUCT
BEND TABS TIGHTLY
AGAINST SUPPLY AIR DUCT
Figure 7. Duct Connector Tabs
Figure 4. Plenum Adapter
13.25"
18.5" (B-Cab.)
21.25" (C-Cab.)
Figure 5. Perforated Flanges

9
Figure 8. Unit Horizontally Suspended
Threaded
Rod
Lag
Bolt
Nuts (x2)
Washer
and
Lockwasher
Nuts (x2)
ELECTRICAL CONNECTIONS
WARNING:
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failure to follow safety warnings exactly could
result in serious injury or property damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Beforeservicing,disconnectallelectricalpower
to the electric furnace.
• Whenservicingcontrols,labelallwiresprior
to disconnecting. Reconnect wires correctly.
• Verifyproperoperationafterservicing.
Electrical power wiring must be made in accordance with
all applicable local codes and ordinances, and with the
current revision of the National Electric Code (ANSI/NFPA
70).For Canadian installations, the electrical connections
and grounding shall comply with the current Canadian
Electrical Code (CSA C22.1 and/or local codes).
Pre-Electrical Checklist
√Verify the voltage, frequency, and phase of the supply
source match the specifications on the unit rating plate.
√Verify that the service provided by the utility is sufficient
to handle the additional load imposed by this equipment.
See the unit wiring label or Table 4 (page 15) for proper
high and low voltage wiring.
√Verify factory wiring is in accordance with the unit
wiring diagrams (Figures 11-14, pages 16-19).Verify no
connections came loose during shipping or installation.
Line Voltage
• An electrical disconnect must be located within
sight of and readily accessible to the unit. This
switch shall be capable of electrically de-energizing
the outdoor unit control voltage. See unit data label for
proper incoming field wiring. Any other wiring methods
must be acceptable to authority having jurisdiction.
• Itisrecommendedthatthelinevoltagetotheunitbe
supplied from a dedicated branch circuit containing the
correct fuse or circuit breaker for the unit.
• The installer should become familiar with the wiring
diagram/schematic before making any electrical
connections to the unit. See the unit wiring label or
Figures 11-14 (pages 16-19).
The unit may also be installed in a horizontal application
with the unit suspended from the ceiling.If suspending the
electric furnace from the ceiling, assemble a support frame
using slotted iron channel and full threaded rod. Fasten
the frame together with nuts, washers, and lockwashers.
Secure the support frame to the rafters with lag bolts.
The electric furnace can also be suspended using steel
straps around each end of the unit. The straps should be
attached to the electric furnace with sheet metal screws
and to the rafters with bolts.
To attach the supply air duct to the electric furnace, bend
the perforated flanges (Figure 5, page 8) upward 90° with
a pair of wide duct pliers. Position the duct against the
electric furnace, align the openings, and secure together
with sheet metal screws. Make sure the screws penetrate
the sheet metal casing and flange.Tape or seal all seams
if required by local code.
To attach the return air duct to the electric furnace, position
the duct against the electric furnace, align the openings,
and secure together with sheet metal screws. Make sure
the screws penetrate the sheet metal casing and electric
furnace. Tape or seal all seams if required by local code.
A/C or H/P Coil Installation
Approved air conditioning and heat pump system
components are listed on the unit nameplate. To install
the indoor coil:
1.Remove door cover plate, door and coil close-off plate
(with insulation). Discard door cover plate.
2. Upflow Applications: Slide the coil into the track located
in the bottom of the unit.
Downflow Applications:The downflow adaptor must be
used (seeTable 1).Install the downflow adaptor and coil
as directed in the instructions supplied with the kit.
3.Reinstall the door and coil close-off plate (with insulation).
NOTE: In downflow applications the door is rotated 180°
so that the refrigerant and condensate lines remain on
the left side.
4.Install the refrigerant and condensate lines as directed
in the instructions supplied with the outdoor unit.
NOTE: The drain pan MUST be drained with field
supplied tubing and looped to form a trap. Both drain
tubes must have a minimum diameter of 3/4” and be
trapped separately.IMPORTANT: Failure to install a trap
may result in condensation overflowing the drain pan,
resulting in substantial water damage to surrounding
area.

10
• Useonlycopperwireforthelinevoltagepowersupply
to this unit. Use proper code agency listed conduit and
a conduit connector for connecting the supply wires to
the unit. Aluminum supply wire may be used if a heater
kit is installed.
• Providepowersupplyfortheunitinaccordancewiththe
unit wiring diagram, and the unit rating plate. Use UL
listed conduit and conduit connectors for connecting the
supply wires to the unit and for proper grounding. Field
supplied bushings for the power supply cables must be
added to support and protect the power supply cables.
• Ifreplacinganyoftheoriginalwiressuppliedwiththe
unit, the replacement wire must be copper wire consisting
of the same gauge and temperature rating.
• Circuitbreakersinstalledin theB5BVserieselectric
furnace are for short-circuit protection of the internal
wiring and to serve as a unit disconnect. They do not
provide over-current protection of the supply wiring.
Overcurrent protection must be provided at the branch
circuit distribution panel and sized as shown on the unit
rating label and according to applicable local codes.See
the unit rating plate and Table 4 (page 15) for maximum
circuit ampacity and maximum overcurrent protection
limits.
• All208/230Voltunitsareshippedfromthefactorywired
for 240 volt operation. For 208V operation, remove the
lead from the transformer terminal marked 240V and
connect it to the terminal marked 208V.
Single Circuit Adaptor Kit
If a single circuit adaptor kit is used, it may need to be re-
configured for some applications.Remove the single circuit
adaptor kit cover and verify that the lugs are configured
correctly for the application. If the lugs are not configured
for the application, refer to the instructions included with
the kit and modify the configuration.
Install the single circuit adaptor kit (if used) in the line
side (“on” end) of the circuit breakers. Tighten the lugs
securely (45 in-lbs recommended). Connect the supply
wiring to the circuit breakers, single circuit adaptor kit, or
terminal block. Tighten the lugs securely.
Dual Supply Circuits
When using dual supply circuits verify that the supply
sized for circuit “A” is connected to the circuit breaker
that is connected to the top element assembly. Replace
metal circuit breaker line cover. Refer to Figure 15 (page
20) for thermostat wiring examples.
Control Board
The control board in the electric furnace controls the
timing sequence of the elements. The board is equipped
with a 3 second blower ON delay and a 15 second blower
OFF delay in heating and a 40 second blower OFF delay
in cooling.
Twinning
Electric furnaces are not supplied with a built in twinning
capability. To connect two electric furnaces to a common
single stage AC condensing unit or heat pump, a twinning
kit is available for field installation. Please follow the
instructions supplied with the kit.
NOTE:Variable speed electric furnaces cannot be twinned.
Thermostat Connections
• Thermostatconnectionsshallbeinaccordancewiththe
instructions supplied with the thermostat and the indoor
equipment. The low voltage wires must be properly
connected to the units low voltage terminal block.
• Asinglestagethermostatisusedwiththisequipment
and must operate in conjunction with any installed
accessories. Typical AC and electric furnace hookups
are shown in Figure 15 (page 20).
CAUTION:
Isolation must be maintained from the external
Class 2 output of any transformer in a cooling
circuit.Use a thermostat with isolating contacts
to prevent inter-connection of Class 2 outputs.
• Wherelocalcodesrequirethatthethermostatwiring
must be routed through a conduit or raceway, splices
can be made inside the unit; however, all wiring must
be NEC Class 1 and must be separated from incoming
power leads.
• Thethermostatshouldbemountedabout5feet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 and installation information.
• Installthegrommet,whichispackedwiththeunit,in
the hole for low-voltage wires. Connect the low-voltage
wiring to the thermostat and the outdoor unit and the
appropriate screw terminal located on the control board.
NOTE: When the low voltage wires are positioned in
this grommet, the grommet will prevent chafing and/or
shorting of the low voltage leads.
Grounding
WARNING:
The unit cabinet must have an uninterrupted
or unbroken electrical ground to minimize
personal injury if an electrical fault should occur.
Do not use gas piping as an electrical ground!
This unit must be electrically grounded in accordance
with local codes or, in the absence of local codes, with
the National Electrical Code (ANSI/NFPA 70) or the CSA
C22.1 Electrical Code. Use the grounding lug provided in
the control box for grounding the unit.

11
STARTUP & ADJUSTMENTS
Before You Start the Unit
Prior to start-up, complete the following inspections:
√Verify the unit is level and properly located with adequate
clearances for servicing the unit. See Figure 1 (page 4)
for clearance requirements.
√Check condensate drain line(s) for proper drainage (if
applicable). See step 4 on page 9.
√Verify the surrounding area and top of the unit is free
from obstructions and debris.
√Check all duct connections. Make sure the duct work
is adequately sealed to prevent air leakage.
√Check all coil connections for leaks (if applicable).
√Verify that the line voltage power leads are securely
connected and the unit is properly grounded.Make sure
all doors are installed before restoring power to the unit
√Verify the thermostat is wired correctly. Make sure all
low voltage wires are securely connected to the correct
leads of the low voltage terminal strip.
√Verify the power supply branch circuit overcurrent
protection is sized properly.
√Verify filter is properly and securely installed.
Air Circulation Check
Running the Blower Continuously
Set the thermostat’s system mode to OFF and the
thermostat’s fan mode to ON. The blower motor should
run continuously. Check for air delivery at the register(s).
Make sure that there are no obstructions at the registers
or in the ducts.
NOTE: If blower is turning opposite of arrow direction, shut
off main power to the unit and switch any two field wires
at the disconnect. DO NOT alter unit wiring.
System Cooling
1.Set the thermostat’s system mode to COOL and fan
mode to AUTO. Lower the thermostat’s temperature
mode below room temperature and observe that the
blower energizes. Check the air being discharged at
the register is cooler than room temperature. Verify
unit refrigerant pressures are in order. Blower should
be turning in direction indicated by arrow.
NOTE: DO NOT alter unit wiring. Listen for any unusual
noises. Locate the source and correct as needed.
2.Allow the unit to run for several minutes and then set
the thermostat’s temperature above room temperature.
Verify the blower cycles off with the thermostat.
System Heating
1.Set the thermostat’s system mode to HEAT and the fan
mode to AUTO. Increase the thermostat’s temperature
above room temperature and observe that the blower
energizes.Check the air being discharged at the register
is warmer than room temperature.
2.Allow the unit to run for several minutes and then set
the thermostat’s temperature below room temperature.
Verify the blower cycles off with the thermostat.
Turning the Blower Off
Set thermostat’s fan mode to AUTO, the blower will shut
down immediately.
Blower Configurations
Determining Nominal System Capacity
To select the appropriate airflow for the electric furnace,
the nominal system capacity must be known.The nominal
system capacity is always the nominal capacity of the
outdoor unit. However, in some situations the nominal
system capacity may not be the same as the capacity
rating of the electric furnace. Always refer to the capacity
rating of the outdoor unit to determine the nominal system
capacity.
Proper Blower Speed for Multi-Speed Units
The blower speed is preset at the factory for operation at
the same speed for heating and cooling. Use the jumping
terminal on the blower motor and connect it to the desired
speed with both the red and black wires connected to the
jumping terminal.
NOTES:
• The control board is programmed with a 40 second
off delay in the cooling mode for optimum system
performance and efficiency.
• When using a 20 kw electric heat kit in a downflow
installation, the blower must be set for high speed for
both heating and cooling.
For optimum system performance and comfort, it may be
necessary to change the factory set speed.Refer to Table
3 (page 15) for airflow data.To change the blower speed:
1. Disconnect all electrical power to the unit and remove
the upper door.
2. Remove the black and red wires from the blower motor
jumping terminal. Discard the blower motor jumping
terminal.
3. Connect the heating speed wire (red) and the cooling
speed wire (black) to the desired blower speed marked
on the terminal block of the blower motor.
To change motor speed for standard 4-speed motors:
• Terminal2=Highspeed
• Terminal3=MediumHighspeed
• Terminal4=MediumLowspeed
• Terminal5=Lowspeed
C Cabinet units are equipped with 5 selectable blower
speeds. To change motor speed for standard 5-speed
motors:
• Terminal1=Highspeed
• Terminal2=MediumLowspeed
• Terminal3=Mediumspeed
• Terminal4=MediumHighspeed
• Terminal5=Highspeed
4. Replace the upper door and secure it to the unit.
5. Restore power to the unit.

12
UNIT MAINTENANCE
Proper maintenance is most important to achieve the
best performance from a electric furnace. Some of the
components and their locations are shown in Figure 10
(page 14). If any component of the electric furnace must
be replaced, use only factory authorized replacement parts
specified in the Replacement Parts List provided online.
WARNING:
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failure to follow safety warnings exactly could
result in serious injury or property damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
•Beforeservicing,disconnectallelectricalpower
to electric furnace.
•Whenservicingcontrols,labelallwiresprior
to disconnecting. Reconnect wires correctly.
•Verifyproperoperationafterservicing.
• Thesemaintenanceinstructionsareprimarilyintended
to assist qualified technicians experienced in the proper
maintenance and operation of this appliance.
• Alwaysreinstallthedoorsontheelectricfurnaceafter
servicing or cleaning/changing the filters.Do not operate
the electric furnace without all doors and covers in place.
• Verifythatthethermostatisproperlyinstalledandis
not being affected by drafts or heat from lamps or other
appliances.
• To achieve the best performance and minimize
equipment failure, it is recommended that a yearly
maintenance checkup be performed. At a minimum,
this check should include the following items:
Air Filter(s) - B5BV series electric furnaces are not
supplied with a single air filter when shipped from the
factory. It is recommended that the filter be cleaned or
replaced monthly.Newly built or recently renovated homes
may require more frequent changing until the construction
dust has minimized. Filter sizes shown in Table 2 are
available at most local retailers.
WARNING:
Never operate the electric furnace without a
filter in place. Dust and lint in the return air
can build up on internal components, resulting
in loss of efficiency, equipment damage, and
possible fire.
Filters designed to remove smaller particles such as
pollen, may require additional maintenance.
CABINET SIZE FILTER SIZE
A 12 x 20 x 1
B 18 x 20 x 1
C 20 x 20 x 1
Table 2. Filter Sizes
Blower Compartment - Dirt and lint can create excessive
loads on the motor resulting in higher than normal operating
temperatures and shortened service life.It is recommended
that the blower compartment be cleaned of dirt or lint
that may have accumulated in the compartment or on
the blower and motor as part of the annual inspection.
Blower Fan Wheel - Inspect the blower wheel blades
for accumulations of dirt and clean if necessary. Inspect
mounting nut for tightness when done.
Blower Motor & Assembly - Inspect the blower assembly
and motor mounting brackets for tightness and corrosion.
Correct deficiencies if necessary. The blower motor
contains sealed bearings and under normal operating
conditions, no maintenance is necessary for the life of
the equipment.
TROUBLESHOOTING
If the electric furnace fails to operate, check the following:
• Istheelectricturnedon?
• Isthethermostatoperatingproperly?
• Aretheblowercompartmentdoor(s)inplace?
• Istheelectricfurnacedisconnectclosed?
• Hasthecircuitbreakertrippedorthecontrolboardfuse
burnedopen?
• Areanymanualresetswitchesopen?
• Isthelterdirtyorplugged?

13
FIGURES & TABLES
Figure 9. B5BV Series Electric Furnace Physical Dimensions
Cabinet Size W A H
Tall B 19 3/4 18 1/4 49 3/8
C 22 1/2 21 56
3/4”
3/4”
3/4”
13”
1 7/8" K.O.
11/8” K.O.
(typ.)
11/4”
15/8”
17/8” 11/4”
3 1/4”
2 5/8”
11/8” K.O.
(typ.)
13/4” K.O.
(typ.)
1 7/8”
3 5/8”
5 5/8”
DETAIL “D”
3 1/4”
2 1/4”
15 1/4”
13”
SUCTION
LIQUID
“W”
1 1/8”
1 7/8”
7/8" K.O.
“H”
22"
3 1/2"
11 3/4"
5"
VentilAire
Cut-Out
(Both Sides)
11 1/2"
3 1/2"
11 3/4"
11 1/2"
5"

14
Motor
Mount Kit
Blower
Motor
Transformer
Capacitor
Circuit
Breaker (60A) Heating Element
Assembly
Blower
Wheel
Blower
Housing
Motor Control
Board
Control
Board
Filter
Door
Upper Door
Assembly
Lo
wer Door
Assembly
Figure 10. B5BV Series Electric Furnace Components

15
AIRFLOW DATA
Table 3. Airflow Data for B5BV Series Electric Furnace
ELECTRICAL INFORMATION
Table 4. B5BV Electrical Data
Model
B5BV-
Nominal
Blower Size
Nominal
Motor Size
Number
of Speeds
Ext. Static
Pressure
(in W.C.)
Low Medium
Low
Medium
High High
000 K-B-10 10 x 8 1/3 hp 4-sp 0.1 800 1090 1265 1405
000 K-B-15 10 x 8 1/3 hp 4-sp
0.2 780 1080 1255 1395
0.3 760 1060 1240 1375
0.4 740 1095 1215 1350
0.5 715 1020 1190 1310
Model
B5BV-
Nominal
Blower Size
Nominal
Motor Size
Number
of Speeds
Ext. Static
Pressure
(in W.C.)
Low Medium
Low Medium Medium High High
000 K-C-10 11 x 10 3/4 hp 5-sp 0.1 1348 1517 1799 1956 2146
000 K-C-20 11 x 10 3/4 hp 5-sp
0.2 1272 1455 1753 1910 2099
0.3 1198 1390 1702 1862 2050
0.4 1126 1325 1650 1311 2000
0.5 1056 1258 1596 1756 1948
0.6 933 1189 1539 1699 1894
0.7 922 1120 1431 1639 1839
0.8 858 1048 1420 1576 1783
NOTES:
1) Airflow is shown in cfm, +/- 5%.
2) All airflows are measured without filter and with dry coil. For filter velocity of 300 ft./min. subtract .08” external static pressure. For wet coil, subtract .1” external static pressure.
3) See unit nameplate or installation instructions for maximum recommended external static pressure.
Model
B5BV-
Supply
Circuit Voltage Total Amps MCA
Maximum
Over-current
Rating
Copper Wire Size
60°C 75°C 90°C
000K-B-10 Single
240V
42.9 53.6 60.0 6.0 6.0 8.0
000K-C-10 Single 46.0 57.5 60.0 4.0 6.0 6.0
000K-B-15
Single 62.9 78.6 80.0 3.0 4.0 4.0
A 42.9 53.6 60.0 6.0 6.0 8.0
B 20.0 25.0 30.0 10.0 10.0 10.0
000K-C-20
Single 86.0 107.5 125.0 1.0 2.0 3.0
A 46.0 57.5 60.0 4.0 6.0 6.0
B 40.0 50.0 60.0 6.0 8.0 8.0
000K-B-10 Single
208V
37.5 46.9 50.0 6.0 8.0 8.0
000K-C-10 Single 40.6 50.8 60.0 6.0 6.0 8.0
000K-B-15
Single 54.8 68.5 70.0 4.0 4.0 6.0
A 37.5 46.9 50.0 6.0 8.0 8.0
B 17.3 21.6 25.0 10.0 10.0 10.0
000K-C-20
Single 75.2 94.0 100.0 2.0 3.0 4.0
A 40.6 50.8 60.0 6.0 6.0 8.0
B 34.6 43.3 50.0 6.0 8.0 8.0

16
Figure 11. Wiring Diagram for B5BV Series Electric furnace Equipped With
PSC Motor & 8 or 10 kw Heater Kit
BLOWER
MOTOR
PLUG
6 5 4
3 2 1
WIRING DIAGRAM
710587B (Replaces 710587A)
Air Handler with Factory Installed Heat (8 kW, 10kW)
Legend
Field Wiring
Factory Wiring:
Low Voltage High Voltage
W2 W1
O
Y/Y2
G R C
TRANSFORMER
24V
BLACK
RED
WHITE
BLACK
WHITE
FUSE L2 COM 2
L2
L2 COM
L1
VS POWER
XFMR
COOL
HEAT
24 VAC
RED
COM
GREY
P3
HEATER KIT PLUG
Y1
NOTES 1) The blower motor speed tap
connection may not be as shown. See the Installation Instructions.
2) Disconnect all power before
servicing.
3) Transformer may have a dual
voltage primary tap. Match the tap position with the supply voltage used.
4) If the Internal wiring is
replaced, use only 105°C
copper wire of the same gauge.
321
654
7
BLACK
RED
ELEMENT
BLACK
GREY BLACK
POWER
PLUG
LIMIT
RED
RED
RED
RED
RED
BLACK
RELAY
RELAY
TERMINAL BLOCK (for select models only
)
CIRCUIT BREAKER (Circuit breaker models only)
ELEMENT
4 SPD. MOTOR
1 2 3 5 6 4
1 = COM 2 = HIGH 3 = MED HIGH 4 = MED LOW 5 = LOW 6 = OPEN
BROWN
1 = COM 2 = HIGH 3 = MED HIGH 4 = MED LOW 5 = LOW 6 = OPEN
GREY
BLUE
ORANGE
GREY
ORANGE
BLUE
¢710587D¤
BLACK
BLACK

17
WIRING DIAGRAM
710541B (Replaces 710541A)
Air Handler with Factory Installed Heat (8 kW, 10kW) X13 MOTOR
Legend
Field Wiring
Factory Wiring:
Low Voltage High Voltage
NOTES:
1) The blower motor
speed tap connection may not be as shown. See the Installation Instructions.
2) Disconnect all
power before servicing.
3) Transformer may
have a dual voltage primary tap. Match the tap position with the supply voltage used.
4) If the Internal wiring
is replaced, use only 105°C copper wire
of the same gauge.
GREY
ORANGE
ELEMENT
ELEMENT
BLACK
GREY BLACK
GREY
BLUE
ORANGE
POWER
PLUG
LIMIT
RED
RED
RED
RED
BLACK
BLACK
RED
BLACK
RELAY
RELAY
TERMINAL BLOCK (for select models only
)
CIRCUIT BREAKER (Circuit breaker models only)
BLUE
W2
W1
O
Y/Y2
G
R C
X13 MOTOR
1 2 3 5 4
TRANSFORMER
24V
BLACK
RED
WHITE
BLACK
WHITE
FUSE
BLOWER MOTOR PLUG
C
L G N
N = NEUTRAL G = GROUND L = LINE C = COMMON
L2
L2
L2 COM
L1
L1
XFMR
X13 COOL
X13 HEAT
24 VAC
RED
COM
GREY
Y1
C
L
G
N
WHITE
X13 COM
RED/BLACK
GREEN/YELLOW
1 2
3 4 5
5 = HI 4 = MED HI 3 = MED 2 = MED LOW 1 = LOW
SPEED TAPS
5=HI
1=LOW
2=MED LO 3=MED
4=MED HI
C=COM L=LINE G=GROUND N=NEUTRAL
P3
HEATER KIT PLUG
321
654
7
GROUND
SUPPLY VOLTAGE
RED BLACK
¢710541s¤
Figure 12. Wiring Diagram for B5BV Series Electric furnace Equipped With
X13 Motor & 8 or 10 kw Heater Kit

18
CIRCUIT
BREAKERS
SUPPLYVOLTAGE GROUND
LIMIT
LIMIT
BLACK
BLACK
BLACK
BLOWER
MOTOR
PLUG
6 5 4
3 2 1
WIRING DIAGRAM
Air Handler with Factory Installed Heat (15 kW)
Legend
Field Wiring
Factory Wiring:
Low Voltage High Voltage
NOTES 1) The blower motor speed tap connection
may not be as shown. See the Installation Instructions.
2) Disconnect all power before servicing. 3) Transformer may have a dual voltage
primary tap. Match the tap position with the supply voltage used.
4) If the Internal wiring is replaced, use only
105°C copper wire of the same gauge.
W2 W1
O
Y/Y2
G R C
4 SPD. MOTOR
1 2 3 5 6 4
TRANSFORMER
24V
BLACK
RED
WHITE
BLACK
WHITE
FUSE L2 COM 2
L2
L2 COM
L1
VS POWER
XFMR
COOL
HEAT
24 VAC
RED
COM
GREY
P3
Y1
HEATER KIT PLUG
321
654
7
710588B (Replaces 710588A)
BLACK
BLACK
RED
1 = COM 2 = HIGH 3 = MED HIGH 4 = MED LOW 5 = LOW 6 = OPEN
1 = COM 2 = HIGH 3 = MED HIGH 4 = MED LOW 5 = LOW 6 = OPEN
BROWN
GREY
ORANGE
BLUE
YELLOW
YELLOW
BLUE
ORANGE
GREY
RELAY
RELAY
RELAY
ELEMENT
ELEMENT
ELEMENT
RED
RED
RED
POWER
PLUG
RED
RED
RED
RED
BLACK
BLACK
BLACK
¢710588J¤
Figure 13. Wiring Diagram for B5BV Series Electric furnace Equipped With 15 kw Heater Kit

19
WIRING DIAGRAM
710543B (Replaces 710543A)
Air Handler with Factory Installed Heat (20 kW) X13 MOTOR
Legend
Field Wiring
Factory Wiring:
Low Voltage High Voltage
NOTES:
1) The blower motor
speed tap connection may not be as shown. See the Installation Instructions.
2) Disconnect all
power before servicing.
3) Transformer may
have a dual voltage primary tap. Match the tap position with the supply voltage used.
4) If the Internal wiring
is replaced, use only 105°C copper wire
of the same gauge.
POWER
PLUG
W2 W1
O
Y/Y2
G R C
X13 MOTOR
1 2
3
5
4
TRANSFORMER
24V
BLACK
RED
WHITE
BLACK
WHITE
FUSE
BLOWER MOTOR PLUG
C
L G N
N = NEUTRAL G = GROUND L = LINE C = COMMON
L2
L2
L2 COM
L1
L1
XFMR
X13 COOL
X13 HEAT
24 VAC
RED
COM
GREY
Y1
C
L
G
N
WHITE
X13 COM
RED/BLACK
GREEN/YELLOW
1 2
3 4 5
5 = HI 4 = MED HI 3 = MED 2 = MED LOW 1 = LOW
SPEED TAPS
5=HI 1=LOW 2=MED LO 3=MED 4=MED HI
C=COM L=LINE G=GROUND N=NEUTRAL
P3
HEATER KIT PLUG
321
654
7
RED
BLACK
CIRCUIT
BREAKERS
SUPPLY VOLTAGE
GROUND
LIMIT
BLACK
BLACK
BLACK
RED
RED
RED
BLACK
LIMIT
RED
GREY
ORANGE
BLUE
YELLOW
BROWN
RELAY
RELAY
RELAY RELAY
ELEMENT
ELEMENT
ELEMENT
ELEMENT
RED
RED
RED
RED
RED
BLACK
BLACK
BLACK
BLUE
ORANGE
GREY
YELLOW
BROWN
¢710543¦¤
Figure 14. Wiring Diagram for B5BV Series Electric furnace Equipped With
X13 Motor & 20 kw Heater Kit

20
Figure 15. Typical Thermostat Connections
GRW
Thermostat
Y
C
Air
Handler
Air
Conditioner
Y
Typical Air Conditioner with B5 Electric Furnace
GRCE
OY
Thermostat
NOTE: Jumper W1
&W2 together for
shorter staging time.
W2
W1
O
Y
G
R
C
W2
W1
O
Y
G
R
C
NOTE: Jumper W1
&W2 together for
shorter staging time.
Air
Handler
W2
O
W2
R
C
Y
Heat Pump
NOTE: Jumper between
W2 & E is required when
no OD T-Stat is used.
Typical Heat Pump with B5 Electric Furnace