Kohler Bancroft K-1158-GCR User manual

Installation Guide
Bath with Airjets
Mproduct numbers are for Mexico (i.e. K-12345M)
Los números de productos seguidos de Mcorresponden a México
(Ej. K-12345M)
Français, page “Français-1”
Español, página “Español-1”
K-1110 K-1158
K-1375 K-1418
K-1457 K-11343
1035472-2-F

Important Information
DANGER: Risk of electric shock. Connect only to circuits protected by a Ground-Fault
Circuit-Interrupter (GFCI) or Earth-Leakage Circuit-Breaker (ELCB).
WARNING: When using electrical products, basic precautions should always be followed,
including the following:
WARNING: Risk of electric shock. A licensed electrician should make all electrical connections.
WARNING: Risk of electric shock. Disconnect power before servicing.
WARNING: Risk of injury or property damage. Please read all instructions thoroughly before
beginning installation, including the following requirements.
NOTICE: Follow all local plumbing and electrical codes.
Grounding is required. The unit should be installed by a qualified service representative, and grounded.
Building materials and wiring should be routed away from the blower body and other heat-producing
components of the unit.
Install to permit access for servicing.
A pressure wire connector marked “Earth/Ground” is provided within the wiring compartment. To reduce
the risk of electric shock, connect this connector to the grounding terminal of your electric service or supply
panel with copper wire equivalent in size to the circuit conductor supplying this equipment.
Pressure wire connectors are provided on the exterior of the junction box or control within this unit to permit
connection of a bonding conductor between this unit and all other exposed metal in the vicinity, as needed to
comply with local requirements.
Product Information
Electrical Requirements
The installation must have a Class A Ground-Fault Circuit-Interrupter (GFCI) or Earth-Leakage
Circuit-Breaker (ELCB). The GFCI or ELCB protect against line-to-ground shock hazard. Use a 220-240 V, 15
A, 50/60 Hz dedicated service for the bath with airjets.
For Canadian installations, install the bath with airjets in accordance with Canadian Electrical Code, Part I.
Product Notices
WARNING: Unauthorized modification may cause unsafe operation or effect performance of the
bath with airjets. Do not relocate the bath blower motor, or make other modifications to the bath
system in the absence of kit or other published instructions, as this could adversely affect the
performance and safe operation of the bath with airjets. Kohler Co. shall not be liable under its
warranty or otherwise for personal injury or damage caused by any such unauthorized
modification. Refer to the ″Before You Begin″section for blower motor relocation requirements,
recommendations, and section coverage information.
WARNING: Keep the area around the blower motor clean and free of debris. Ensure that the area
around the blower motor is free of sawdust, insulation, dirt, or other small loose debris. Such
material could clog the blower motor air ducts and reduce the air flow through the blower.
1035472-2-F 2 Kohler Co.

Product Information (cont.)
Factory Assembled Features
Factory assembled components include a blower motor, air harness, control, check valve, butterfly valves,
chromatherapy lights (if provided), electrical harnesses, and an illuminated user keypad. Other than power
wiring and plumbing, no assembly is required.
Connections and Service Access
NOTICE: Provide unrestricted service access to the blower motor. You must provide access for servicing
the blower motor and controls. The access must be located immediately next to the blower motor. Study
the roughing-in information packed with the bath with airjets.
Before installation, ensure that there is proper access to the blower motor and final connections. If the blower
motor is installed in an enclosed area, an access panel is required at the blower motor. This panel should be
34″(86.4 cm) wide and 15″(38.1 cm) high minimum.
Table of Contents
Important Information .............................................................. 2
Product Information ............................................................... 2
Electrical Requirements .......................................................... 2
Product Notices ................................................................ 2
Factory Assembled Features ...................................................... 3
Connections and Service Access ................................................... 3
Before You Begin ................................................................. 4
Tools and Materials ............................................................... 5
Prepare the Site - Wood Construction .................................................. 6
Prepare the Site ................................................................. 7
Prepare the Bath with Airjets ........................................................ 8
Secure the Bath with Airjets to the Subfloor - Standard ..................................... 9
Install the Plumbing - Standard ...................................................... 10
Connect the Electrical Service - Standard .............................................. 11
Test Run the Bath with Airjets - Standard .............................................. 12
Disconnect the Blower Motor - Remote ................................................ 13
Secure the Bath with Airjets to the Subfloor - Remote ..................................... 14
Mount the Blower Motor - Remote ................................................... 16
Terminate the Cable at the Blower - Remote ............................................ 17
Install the Power Cord at the Control - Remote .......................................... 19
Install the Plumbing - Remote ....................................................... 20
Make Power Connections - Remote .................................................. 21
Test Run the Bath with Airjets - Remote ............................................... 22
Complete the Finished Deck ........................................................ 23
Complete the Concrete Installation ................................................... 23
Clean-Up After Installation ......................................................... 23
Confirm Proper Operation .......................................................... 24
Operating Sequence ............................................................. 26
Chromatherapy Operation (if Equipped) ............................................... 27
Troubleshooting Procedures ........................................................ 29
Kohler Co. 3 1035472-2-F

Before You Begin
CAUTION: Risk of product damage. Do not lift the bath with airjets by the piping or blower
motor, or use the piping or blower motor for structural support of the bath.
For All Installations
We recommend this bath with airjets for drop-in or island installation, depending on the purchased
model.
Inspect the bath for damage before you begin installation.
You must install this bath to an adequately supported, level subfloor.
Please read these instructions carefully to familiarize yourself with the required tools, material, and
installation sequences. Follow the sections that pertain to your particular installation. This will help
you avoid costly mistakes. In addition to installation instructions, read all operating and safety
instructions.
The variety of installations possible with this bath may require framing procedures other than those
described in this manual.
Both concrete and wood frame construction techniques are discussed in this manual.
Confirm adequate mounting and connection space for the faucet specified for your installation.
For Remote Blower Locations Only
IMPORTANT! It is not necessary that the blower motor be relocated. The option is provided for the case
that a particular installation makes this effort practical.
For your convenience or accessibility, the blower motor and check valve can be mounted in a
remote location. Choose a space as close to the bath as possible to maximize bath performance. Plan
and prepare for the relocation. Pay attention to the following requirements and recommendations:
•The blower motor must be located within 15’ (4.6 m) of rigid piping from the bath air harness. This
limitation is for total pipe length and applies to any direction changes and elbows. There can be no
more than six changes of direction. There should be as few direction changes as possible.
•The blower motor must be mounted horizontally at least 2″(5 cm) above the floor. Do not mount
the blower motor with the blower motor discharge pointing up.
•The check valve should be relocated with the blower motor. At the new location, the check valve
must be no lower than 24″(61 cm) below the rim of the bath. The check valve must be within 12″
(30.5 cm) of the blower motor. The check valve must be oriented vertically with the flow arrow
pointing up.
•1-1/2″PVC or equivalent rigid piping should be used.
•The piping installation must meet the requirements of local plumbing or building codes. Ensure that
the installation does not reduce the fire rating of any walls. Piping must be supported at intervals
along the length in accordance with local codes.
•Use PVC unions or other means of making the installation maintainable.
•The blower motor must have adequate ventilation. Do not install the blower motor closer than 1″
(2.5 cm) from the wall or other objects. Provide a ventilation space of at least 15 cubic feet (.4 cubic
meters) for cooling.
•Ensure that the blower motor location is clean and free of dust or debris.
•If appropriate, install an additional access panel for blower motor maintenance.
•The 18 AWG (American Wire Gauge) minimum power cable to the blower motor must meet the
requirements of the applicable electrical or building codes. Ensure that the installation does not
reduce the fire rating of any walls.
•The power cord must be supported at intervals along the length in accordance with local codes.
Power cords may not rest on surfaces or floors that are subject to flooding.
•All material needed for the relocation must be supplied by the installer.
Kohler Co. reserves the right to make revisions in the design of products without notice, as specified
in the Price Book.
1035472-2-F 4 Kohler Co.

Tools and Materials
For Remote Blower Motor Locations Only
The following additional items are required if the blower motor is to be relocated from the standard position:
•Electrician pliers.
•Phillips screwdriver.
•Flat blade screwdriver.
•Adjustable end wrench.
•Drill and bits as required to install the blower mounting fasteners.
•18 AWG non-metallic sheathed cable, two conductor with ground, with support clips, as required,
not provided.
•4″(10.2 cm) x 2″(5 cm) electrical junction box with cover, gasket, and mounting screws, one (1)
each, not provided.
•Strain reliefs, three (3) total, one must fit the blower motor cover with standard NPT (National Pipe
Thread) threads, the other two are to fit the holes in the new junction box, not provided
•Wire connectors (wire nuts or equivalent), six (6) each, not provided.
•1-1/2″(3.8 cm) PVC or other rigid pipe, with fittings, unions, PVC cement or equivalent fastening
method, and support clips, as required, not provided.
•Flathead wood screws, concrete anchors, or other fasteners for mounting the blower motor, four (4)
each, not provided.
•Solid copper 8 gauge bonding wire, 36″(91.4 cm).
• Conventional woodworking tools and materials or
conventional masonry tools and materials, as
appropriate
• Drop cloth
• Construction Adhesive (optional)
• Cement or Mortar (optional)
• 2x4s or 2x6s (optional)
Plus:
Silicone Sealant Measuring Tape Pencil Level
Safety Glasses Pipe Wrench
Kohler Co. 5 1035472-2-F

1. Prepare the Site - Wood Construction
CAUTION: Risk of product damage. Do not support the bath with airjets by the rim.
NOTICE: Adequate floor support must be provided. Consult the roughing-in sheet packed with your bath
for specific floor loading requirements.
NOTICE: Provide adequate ventilation and a minimum of 15 cubic feet (.4 cubic meters) in the installed
location for cooling the motor and to supply sufficient air for the blower. Do not install the blower motor
closer than 1″(2.5 cm) from the wall or other objects.
NOTE: This bath may be installed in a drop-in or an island installation. An island installation requires a
four side surround.
Make sure the flooring offers adequate support for your bath, and verify that the subfloor is flat and
level.
For a drop-in installation: Carefully lay out and cut the rough deck material. Use the cutout
template if one is provided, or refer to the roughing-in cutout information.
For an island installation: Construct a 2x4 frame in accordance with the roughing-in information
packed with the bath.
Provide access panels as required to service the blower motor and control.
Position the plumbing according to the roughing-in information. Cap the supplies, and check for
leaks.
Frame the floor
according to the
roughing-in information.
Position the
rough plumbing.
Verify that the subfloor
offers adequate support,
and is flat and level.
Provide a 1/16" (2 mm)
gap between the bath
rim and framing.
Construct 2x4 or
2x6 stud framing
according to the
roughing-in
information.
1035472-2-F 6 Kohler Co.

2. Prepare the Site - Concrete Construction
CAUTION: Risk of product damage. Do not support the bath by the rim.
NOTICE: Adequate floor support must be provided. Consult the roughing-in sheet packed with your bath
for specific floor loading requirements.
NOTICE: Provide adequate ventilation and a minimum of 15 cubic feet (.4 cubic meters) in the installed
location for cooling the motor and to supply sufficient air for the blower. Do not install the blower motor
closer than 1″(2.5 cm) from the wall or other objects.
NOTE: This bath may be installed in a drop-in or an island installation. An island installation requires a
four side surround. In both instances, make sure the deck is supported by brick or concrete.
Make sure the flooring offers adequate support for your bath, and verify that the subfloor is flat and
level.
Provide access panels as required to service the blower motor and control.
Construct brick or concrete supports.
Provide a 1/16″(2 mm) gap between the bath rim and the concrete or brick framing. Frame the
floor, or construct a frame for a raised installation, in accordance with the roughing-in information
packed with the bath.
Position the plumbing according to the roughing-in information packed. Cap the supplies, and
check for leaks.
1/16"
(2 mm)
Typical
access
panel
Bath may be installed next
to the wall or as an island
installation.
Install an access panel to allow
the pump to be serviced.
Bath
Approved Tile Backing
Brick
Tile
Approved Tile Backing
Brick
Tile
Kohler Co. 7 1035472-2-F

3. Prepare the Bath with Airjets
For All Installations
Install the drain to the bath according to the drain manufacturer’s instructions. Do not connect the
trap at this time.
Position a clean drop cloth or similar material in the bottom of the bath to protect the finish. Ensure
that the airjets are covered. Be careful not to scratch the surface of the bath.
Blower Motor Options
IMPORTANT! The following sections are applicable to either the standard blower installation or the
custom blower installation. Use the ″Standard Installation″sections if the blower is to remain on the bath
support board. If the blower is to be relocated to a custom location, use the ″Remote Blower Motor
Location″Sections.
Standard Installation Sections
Secure the Bath with Airjets to the Subfloor - Standard
Install the Plumbing - Standard
Make Power Connections - Standard
Test Run the Bath with Airjets - Standard
Then go to the ″Complete the Finished Deck″section.
Remote Blower Motor Location Sections
Disconnect the Blower Motor - Remote
Secure the Bath with Airjets to the Subfloor - Remote
Mount the Blower Motor - Remote
Terminate the Cable at the Blower - Remote
Install the Power Cord at the Control - Remote
Install the Plumbing - Remote
Make Power Connections - Remote
Test Run the Bath with Airjets - Remote
Then go to the ″Complete the Finished Deck″section.
1035472-2-F 8 Kohler Co.

4. Secure the Bath with Airjets to the Subfloor - Standard
CAUTION: Risk of product damage. Do not lift the bath with airjets by the piping or blower
motor, or use the piping or blower motor for structural support of the bath.
CAUTION: Risk of product damage. Do not support the bath with airjets by the rim.
Choose the installation option that best applies to your particular installation. Follow the
appropriate instructions.
If the subfloor is not level, shim the bath support blocks as necessary.
Option for Using a Cement or Mortar Bed
NOTE: Do not use gypsum cement or drywall compound for this application, as they will not provide an
acceptable, durable bond.
Spread a 2″(5 cm) thick layer of cement or mortar on the subfloor where the bath will be set. This
will help secure, level, and support the unit. Clear all the material away from the four support block
locations.
Position a piece of plastic drop cloth material on top of the cement or mortar bed.
With help, carefully lift the bath into place, and make sure the blower motor control and support
blocks do not rest in the bed material.
Insert the drain tailpiece into the trap. Make sure the bath is level and resting on all support blocks.
Remove the protective tape from the rim.
Apply a continuous bead of high-quality silicone sealant around the entire rim of the bath. Allow
the sealant to cure as per the manufacturer’s instructions.
Option for Using Construction Adhesive
Apply a generous amount of high-quality construction adhesive to the bottom of the support blocks.
With help, carefully lift the bath into position.
Insert the drain tailpiece into the trap. Make sure the bath is level and resting on all support blocks.
Remove the protective tape from the rim.
Apply a continuous bead of high-quality silicone sealant around the entire rim of the bath. Allow
the sealant to cure as per the manufacturer’s instructions.
Option for Using Silicone Sealant
With help, carefully lift the bath into position.
Insert the drain tailpiece into the trap. Make sure the bath is level and resting on all support blocks.
Remove the protective tape from the rim.
Clear spaces
for support
blocks.
Apply a bead of
silicone sealant
around the entire
rim.
OR
Apply construction
adhesive to the
support blocks.
Spread a 2" (5.1 cm)
layer of cement or
mortar bed material.
Kohler Co. 9 1035472-2-F

Secure the Bath with Airjets to the Subfloor - Standard (cont.)
Apply a continuous bead of high-quality silicone sealant around the entire rim of the bath. Allow
the sealant to cure as per the manufacturer’s instructions.
5. Install the Plumbing - Standard
CAUTION: Risk of property damage. Ensure a watertight seal on the bath drain.
Connect the drain to the trap according to the drain manufacturer’s instructions.
NOTICE: An access panel will simplify future maintenance.
Install the faucet valving according to the faucet manufacturer’s instructions. Do not install the
faucet trim until instructed. Open the hot and cold water supplies, and check the supply
connections for leakage.
Run water into the bath, and check the drain connections for leakage.
1035472-2-F 10 Kohler Co.

6. Connect the Electrical Service - Standard
NOTE: The product model number is printed on a label on the pump side of the whirlpool bath. This
label also identifies the electrical rating of the product. All whirlpools come equipped with a wiring
junction box and are designed to operate between 208 VAC and 240 VAC at either 50 Hz or 60 Hz.
WARNING: Risk of electrical shock. Make sure the power has been disconnected before
performing the following procedures. Refer to the “Important Information” section.
WARNING: Risk of electrical shock. To reduce the risk of electrical shock, connect the pump to a
properly grounded Ground-Fault Circuit-Interrupter (GFCI) or Earth-Leakage Circuit-Breaker
(ELCB). This will provide additional protection against line-to-ground shock hazard. A 208-240 V, 20
A, 50/60 Hz dedicated circuit is required.
IMPORTANT! The load neutral is not used. There should be no connection to the load neutral terminal
on the Ground-Fault Circuit-Interrupter (GFCI) breaker. The green wire with the yellow stripe is the
equipment ground and needs to be connected to the neutral bus in the main circuit breaker box.
The whirlpool bath control and system have been pre-wired at the factory. A licensed electrician
should make a routine service connection to the junction box.
Connect service to the junction box. The junction box contains blue, brown, and green with a yellow
stripe colored wires.
Follow local electrical codes. Bond in accordance with national and local codes.
A wiring harness has been pre-wired at the factory, allowing communication between the keypad,
all features, and the control. No additional wiring is required, but ensure that all wires are securely
fastened.
NOTE: Your wiring harness included an antenna for the optional remote control. Do not alter or damage
this antenna during installation.
From
Control
Brown (L2)
* Connections to be Made
at the Circuit Breaker
S/N
* Equipment Ground Wire Connectors
Neutral Bus
(In Breaker Box)
120/240 VAC
Source
Typical Two-Pole
Circuit Breaker
with GFCI
* Line Neutral
(White Curly
Wire)
Typical Wiring Connection for North America
Ground
(Green with
Yellow Stripes)
*L1
No Connection
(Load Neutral)
Field Wiring
(From Junction Box
to GFCI Breaker)
Electrician to provide suitable
strain relief cable.
Wire
Connector
Blue (L1)
*L2
240 V
120 V
240 V
120 V
Breaker Box
L1 L2N
Bond in accordance with national and local codes.
Open bonding lugs are located at the top of the
junction box.
Control
External Power
Control
Power Supply
Blower
Motor Cord
Check
Valve
Kohler Co. 11 1035472-2-F

7. Test Run the Bath with Airjets - Standard
NOTE: For additional information on operating the bath with airjets, see the ″Confirm Proper Operation″
section.
Check all electrical connections. Make sure the electrical power to the bath with airjets is turned on.
Ensure all PVC piping connections are tightened.
Temporarily remove the protective drop cloth from the bath, then fill the bath to a level at least 2″
(5.1 cm) above the top of the highest airjet.
Operate the bath with air flow in all three zones. Check all bath PVC connections for leaks.
Stop the blower.
Check for water leakage at the bath, the bath drain, and the air harness.
Test other features as desired.
Drain the bath to start the automatic purge cycle.
Allow the automatic purge cycle to complete.
Place the protective drop cloth over the bath.
Turn off the power to the unit.
Air Flow Mode
Activates Mode Selected
Power On/Off
Indicator Bar
Decrease Flow or Surge
Increase Flow or Surge
Rotating Ring Key Pad
Zone 1 Zone 2
Zone 3
Surge Mode
Purge Mode
Chromatherapy Specific
Color (if provided)
Chromatherapy Cycle
(if provided)
Rotate Outer Ring to
Access Desired Mode
1035472-2-F 12 Kohler Co.

8. Disconnect the Blower Motor - Remote
IMPORTANT! This section applies only to those installations in which the blower motor is being
relocated from the shipping position on the bath with airjets support board.
IMPORTANT! Do not cut the bath harness (pipes) for this installation. Any cutting of the bath with
airjets harness will void the warranty.
Removing the Blower Motor
Disconnect the blower motor electrical plug from the control.
Remove any cable ties that support the blower motor cord.
Remove the retaining screw holding the air harness on the blower motor discharge. Do not discard
the screw at this time.
Remove the four blower motor mounting screws from the blower adapter baseboard. Keep these
screws.
While restraining the tee with one hand, slide the blower motor away from the tee.
Remove the blower motor from the bath.
Remove the Check Valve
Remove the upper retaining screw at the check valve. Do not discard the screw at this time.
Remove the check valve and attached PVC elbow from the bath.
Prepare the Site for the Blower Motor
NOTE: Refer to the ″Before You Begin″section for detailed requirements for the blower motor relocation.
Prepare the site where the blower motor will be installed. The site must be within 15’ (4.5 m) of the
bath.
As appropriate, install an access panel to service the blower motor.
As appropriate to the installation, prepare the routing paths for the PVC piping and the new blower
motor power cable. Follow all applicable building, fire, plumbing, and electrical codes.
Elbow
Screw
Baseboard
Control
To Blower Motor
Cover
Junction
Box
Blower Motor
Mounting Screws
Blower Motor
Electrical Plug
Check
Valve
Kohler Co. 13 1035472-2-F

9. Secure the Bath with Airjets to the Subfloor - Remote
CAUTION: Risk of product damage. Do not lift the bath by the piping or blower motor, or use the
piping or blower motor for structural support of the bath.
CAUTION: Risk of product damage. Do not support the bath by the rim.
Choose the installation option that best applies to your particular installation. Follow the
appropriate instructions.
If the subfloor is not level, shim the bath support blocks as necessary.
Option for Using a Cement or Mortar Bed
NOTE: Do not use gypsum cement or drywall compound for this application, as they will not provide an
acceptable, durable bond.
Spread a 2″(5.1 cm) thick layer of cement or mortar on the subfloor where the bath will be set. This
will help secure, level, and support the unit. Clear all the material away from the four support block
locations.
Position a piece of plastic drop cloth material on top of the cement or mortar bed.
With help, carefully lift the bath into place.
Ensure the blower motor control and support blocks are not resting in the bed material.
Insert the drain tailpiece into the trap. Ensure the bath is level and resting on all support blocks.
Remove the protective tape from the rim.
Apply a continuous bead of high-quality silicone sealant around the entire rim of the bath. Allow
the sealant to cure as per the manufacturer’s instructions.
Option for Using Construction Adhesive
Apply a generous amount of high-quality construction adhesive to the bottom of the support blocks.
With help, carefully lift the bath into position.
Insert the drain tailpiece into the trap. Ensure the bath is level and resting on all support blocks.
Remove the protective tape from the rim.
Apply a continuous bead of high-quality silicone sealant around the entire rim of the bath. Allow
the sealant to cure as per the manufacturer’s instructions.
Option for Using Silicone Sealant
With help, carefully lift the bath into position.
Insert the drain tailpiece into the trap. Ensure the bath is level and resting on all support blocks.
Clear spaces
for support
blocks.
Apply a bead of
silicone sealant
around the entire
rim.
OR
Apply construction
adhesive to the
support blocks.
Spread a 2" (5.1 cm)
layer of cement or
mortar bed material.
1035472-2-F 14 Kohler Co.

Secure the Bath with Airjets to the Subfloor - Remote (cont.)
Remove the protective tape from the rim.
Apply a continuous bead of high-quality silicone sealant around the entire rim of the bath. Allow
the sealant to cure as per the manufacturer’s instructions.
Kohler Co. 15 1035472-2-F

10. Mount the Blower Motor - Remote
NOTE: The blower motor must be mounted horizontally 2″(5.1 cm) above the floor. Do not mount the
blower motor with the blower motor discharge pointing up.
NOTE: The check valve should be relocated with the blower motor. At the new location, the check valve
must be no lower than 24″(61 cm) below the rim of the bath. The check valve must be within 12″(30.5
cm) of the blower motor. The check valve must be oriented vertically with the flow arrow pointing up.
NOTE: Refer to the ″Before You Begin″section for other detailed requirements for the blower motor
relocation.
At the new blower motor location, install a 2″(5.1 cm) block (not supplied) for the new blower
motor support.
Use the blower motor as a template to mark the location of the four mounting bolts or screws.
Drill four 1/8″(3 mm) diameter pilot holes for the blower motor mounting screws.
Install and support PVC or other 1-1/2″rigid piping (not supplied) between the blower motor
location and the bath air harness.
Connect the new piping to the existing air harness without modifying the air harness. Align the new
pipe and cement the connection. Allow the cement to cure as per the manufacturer’s
recommendations.
Connect the check valve assembly to the new piping. Align the new pipe with the check valve
assembly and drill a hole for the existing mounting screw. Use silicone or equivalent sealant at the
connection and reuse the screw that was removed previously. Allow the sealant to cure as per the
manufacturers recommendations.
Apply silicone or equivalent sealant to the lower connection of the check valve assembly.
Align the blower motor with the lower connection of the check valve assembly. Position the motor
on the support block. Reuse the screw that was removed previously. Allow the sealant to cure as per
the manufacturers recommendations.
Fasten the blower motor to the new support block.
Check Valve
Screw
Screw
Blower Motor
Mounting Screws
1-1/2" (3.8 cm) Min
Mount the blower motor using
four fasteners.
Install elbow and check valve to field
pipe, use silicone or equivalent sealant,
and install retaining screw or equivalent
fastener.
Connect blower motor to the check
valve, use silicone or equivalent
sealant, and install retaining screw.
1-1/2" Rigid piping
(not supplied)
1035472-2-F 16 Kohler Co.

11. Terminate the Cable at the Blower - Remote
Route the Power Cable
Route two conductors with ground 18 AWG (American Wire Gauge) or equivalent power cable (not
supplied) between the bath and blower motor locations. Follow all applicable electrical and fire
codes. Ensure that the cable jacket meets applicable code requirements and the cable is properly
supported and protected.
Route the Power Cable
Loosen the cable strain-relief nut on the blower motor. Push the nut back on the cable to provide
clearance for the cover removal.
Remove the two access cover screws from the back of the blower motor. As you are loosening the
screws, check periodically if the cover can be slid back on the electrical cable.
When the cover is loose, use electrician pliers or equivalent to cut the electrical cable at a point
about 4″(10.2 cm) from where the cable disappears into the blower motor housing.
Pull the free end of the electrical cord through the cover, insert, and strain relief nut.
Discard the existing strain relief nut and insert.
Reconnect the blower motor plug to the control.
Install a standard NPT threaded strain relief to the blower motor cover.
Temporarily store the removed components in a safe location.
Terminate the New Power Cable at the Blower Motor
At the blower motor 4″(10.2 cm) pigtail lead, strip back the cable jacket about 3″(7.6 cm).
Cut the unused brown conductor off at the cable jacket.
At the newly installed blower motor power cable, strip back the cable jacket about 2″(5 cm).
For installations in the United States, mark any white conductors with red or black tape as required
by the NEC.
Strip the wire insulation about 3/8″(1 cm) from the blower motor pigtail leads and from the power
cable leads.
Route the new power cable leads through the blower motor access cover and strain relief.
Using wire nuts or other approved termination methods, terminate the conductors as follows:
•Connect the brown pigtail lead to the L1 conductor of the power cable.
Access Cover
Blower Motor
Plug Strain
Relief
Remove screws, remove cover
and cut existing cable at about 4"
(10.2 cm) from the blower motor.
Kohler Co. 17 1035472-2-F

Terminate the Cable at the Blower - Remote (cont.)
•Connect the blue pigtail lead to the L2 conductor of the power cable.
•Connect the green with yellow stripe pigtail lead to the grounding or earthing conductor of the
power cable.
With the two screws, reinstall the access cover on the blower motor.
Tighten the strain relief on the power cable at the blower motor.
Remove any dust or debris from the blower motor area.
1035472-2-F 18 Kohler Co.

12. Install the Power Cord at the Control - Remote
Install the Junction Box on the Control
Install a second junction box with external bonding lug, two strain reliefs, and a cover (not
supplied) on the blower adapter board on the control.
Connect a solid copper 8 gauge bonding wire from the bonding lug on the new junction box to the
spare bonding lug on the control. Follow all local electrical codes.
Reconnect the Blower Motor Power Cord
If required, reconnect the blower motor power cord at the control.
Route the power cord through a strain relief on the new junction box. Tighten the strain relief.
At the end of the cut power cord, strip back the cable jacket about 3″(7.6 cm).
Cut the unused brown conductor off at the cable jacket.
Strip the wire insulation about 3/8″(1 cm) from the end of the wires.
Terminate the New Power Cable
Route the new power cable through the other strain relief on the new junction box. Tighten the
strain relief.
Strip back the cable jacket about 3″(7.6 cm).
For installations in the United States, mark the white wire with either red or black electrical tape as
required by the NEC.
Strip the end of the wires about 3/8″(1 cm).
Use approved termination devices to terminate the conductors as follows:
•Terminate the brown pigtail lead to the L1 conductor of the power cable.
•Terminate the blue pigtail lead to the L2 conductor of the power cable.
•Terminate the green with yellow stripe pigtail lead to the grounding or earthing conductor of the
power cable.
Install the cover on the new junction box.
Control
Wire
Blue
Strip back the jackets about
3" (7.6 cm) on the field cable
and on the blower motor
pigtail. Then cut the unused
fourth conductor brown wire
off at the point that the cable
jacket ends.
Install junction box with
cover and bonding lug
(not provided).
Green w/Yellow Stripe
Cable to
Blower
Motor
Ground (Green with
Yellow Stripe)
From
Control
Brown
New Field
Cable To
Blower Motor
Blower Adapter
Board Blower Motor
Pigtail
Blower
Motor Cord
Route the cut end of the
cord to the new junction
box. Add strain relief.
Brown
Blue
From Control
GNDGND
NL2
L1
L1
60 Hz 50 Hz
Kohler Co. 19 1035472-2-F

13. Install the Plumbing - Remote
CAUTION: Risk of property damage. Ensure a watertight seal on the bath drain.
Connect the drain to the trap according to the drain manufacturer’s instructions.
NOTICE: An access panel will simplify future maintenance.
Install the faucet valving according to the faucet manufacturer’s instructions. Do not install the
faucet trim until instructed. Open the hot and cold water supplies, and check the supply
connections for leakage.
Run water into the bath, and check the drain connections for leakage.
1035472-2-F 20 Kohler Co.