Kohler K-98741-K1 Assembly instructions

Installation and Care Guide
Lighted Rain Panel for DTV+
K-98741-K1
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1235394-2-A

IMPORTANT INSTRUCTIONS
WARNING: When using electrical products, basic precautions should always be followed,
including the following:
DANGER: Risk of electrocution. Disconnect the electricity to the working area at the main breaker
panel before performing the installation steps for hardwiring.
WARNING: Risk of electric shock. Connect only to circuits protected by a Ground-Fault
Circuit-Interrupter (GFCI)*. Grounding is required. The unit should be installed and grounded by a
qualified service representative.
WARNING: Risk of electric shock. A qualified electrician should route all electrical wiring.
WARNING: Risk of electric shock. Disconnect power before servicing.
WARNING: Risk of injury or property damage. Please read all instructions thoroughly before
beginning installation.
NOTICE: Follow all plumbing, electrical, and building codes.
NOTICE: Provide unrestricted service access to the Power Data Supply (PDS).
*Outside North America, this device may be known as a Residual Current Device (RCD).
___________________________________________________________________________________________________
Operation with DTV+
To connect the lighted rain panel to the DTV+ system, the K-99695 system controller is required.
The provided data cable is used to connect the lighted rain panel PDS to the system controller.
Refer to the ″DTV+ System Layout″section in this guide.
Before Operating the System For the First Time:
Download and install the latest software for connected components. This may take an hour or more to
complete based on system configuration and internet connection speed. Do not disconnect the power from
any components during software download and installation.
Specifications
Ambient Temperature Max 104°F (40°C)
Maximum Relative Humidity 95% non-condensing
Power Data Supply (PDS) 100-240 VAC, 50-60 Hz, 1.7 A
Data Cable Length 25’ (7.6 m)
Chroma Power Cable Length 30’ (9.14 m)
1235394-2-A 2 Kohler Co.

Tools and Materials
Before You Begin
NOTICE: Choose an automatic compensating valve with the appropriate minimum flow rating to ensure
your valve will provide safety at the lowest flow rates.
•For a showerhead rated at 2.5 gal/min (9.5 l/min) maximum, use with an automatic compensating
valve rated at 2.0 gal/min (7.6 l/min) or less.
CAUTION: Risk of personal injury. If the rain panel is not securely held in place during
installation, the product may fall. Get help installing the light panel assembly and waterways.
Read these instructions and determine the locations of all required components before beginning
installation.
This product is designed for ceiling-mount installation only. Do not install to a shower wall.
This manual covers vertical installation of the Power Data Supply (PDS) in a service closet or 2x6
stud pocket. If the wall is enclosed, an access panel must be provided for servicing.
The PDS may be mounted under floor joists. If mounting under the floor, the unit must not be
enclosed.
The PDS must be located within 30’ (9.14 m) of the rain panel.
If possible, locate the PDS within 25’ (7.62 m) of the system controller.
Inspect the supply piping for damage. Replace as necessary.
The PDS is intended for hardwire installation. Make sure electrical power can be provided to a
service closet or 2x6 stud framing with access panel, not more than 2’ (0.61 m) from the intended
PDS location.
To reduce the risk of electric shock, locate the PDS and overhead rain panel within proximity to
each other to allow each cable to have a drip loop.
Socket Wrench &
11 mm or 7/16"
Socket and Extension
5/64", 5/32" Masking
Tape
Sealant
Tape
Soldering
Supplies
Plus:
Note: All nipples & fittings 1/2" NPT
• (4) 2-1/2" nipples
• Female fittings
• 1/2" copper tubing
• 2x4s and 2x6s
• Conventional woodworking tools and materials
• #8 x 1-1/2" drywall screws
• Standard wood or drywall screws
• Electrical Wire
• Wire Cutters/Strippers
Kohler Co. 3 1235394-2-A

1. DTV+ System Layout
The K-99695 system controller powers the interface(s) and controls the lighted rain panel and other system
components.
Determine the locations of all required components.
Route the 25’ (7.6 m) data cable from the PDS installation location to the controller installation
location. If the PDS is not within 25’ (7.6 m) of the controller, add an Ethernet-style extension cable.
Route the 30’ (9.14 m) chroma power cable from the PDS installation location to the rain panel
installation location.
For cable connections, refer to the ″Connect the Cables″section.
Before Operating the System For the First Time:
Download and install the latest software for connected components. This may take an hour or more to
complete based on system configuration and internet connection speed. Do not disconnect the power from
any components during software download and installation.
Router
AC
Power
Controller
Component Cable
Connections
Interface
(Up to Three)
Digital
Valve(s)
Power Data
Supply
Rain Panel 100-240 VAC
30' (9.1 m) Chroma Power Cable
25' (7.6 m)
Data Cable
1235394-2-A 4 Kohler Co.

2. Install the Supply Piping
Route the water supply lines.
Use the provided soldering template to construct a pressure balancing loop.
Position tees in the loop(s) over each of the four raised locations on the template.
Solder the assembly while it is attached to the template.
IMPORTANT! For multiple supply lines: To maintain proper alignment of the tees with the product, the
pressure balancing loops must be rigidly connected to each other while on the soldering template.
Multiple supply lines: While on the soldering template, rigidly connect the two pressure balancing
loops to each other.
Remove the pressure balancing loop from the template.
Connect the pressure balancing loop to the water supply.
Do not strap the pipes.
Temporarily install a nipple to each tee. Do not use any sealant.
Ø 9-5/8"
(244 mm)
6-3/4"
(172 mm)
Soldering Template
6-3/4" (172 mm)
Clamp each tee
to the template
during soldering.
1/2" NPT Nipple
Soldering
Template
Pressure
Balancing
Loop
Rigidly connect
to each other.
Single Supply
Multiple Supplies
Kohler Co. 5 1235394-2-A

3. Install the Support Framing
WARNING: Risk of injury or property damage. Template/cradle must be properly secured to
support the weight of the rain panel. Secure the cradle to the framing using a minimum of six #8 x
1-1/2″long drywall screws.
If installing the rain panel to a finished ceiling, remove drywall from the installation location.
IMPORTANT! The soldering template must be secured to structural framing.
Attach a mounting surface to structural framing of the ceiling using #8 x 1-1/2″long drywall
screws.
Construct the support framing using 2x4 studs as shown in the illustration above. The face of each
2x4 should be installed flush with the face of the ceiling joists.
Position the soldering template/cradle under the pressure balancing loop(s), as illustrated. Attach
the cradle to the support framing.
Do not strap the pipes.
14-1/2" (368 mm)
12-1/4"
(311 mm)
2x4
Pressure
Balancing
Loop
Ceiling
Joist
Soldering
Template/Cradle
Bottom View
2x4 Ceiling Joist
Pressure
Balancing Loop
1235394-2-A 6 Kohler Co.

4. Install the Finished Ceiling
Build a 5″(127 mm) typical drop sill (including finished ceiling material) around the mounting
cradle using cut/modified 2x6 lumber.
Install the water-resistant wall board.
IMPORTANT! The ceiling cutout must be within the dimension limits specified above. The seal will not
cover gaps greater than 1/4″(6 mm).
IMPORTANT! The balancing loop(s) must be centered within 1/8″(3 mm) with the pipe nipples evenly
spaced from the edges of the rough opening.
Cut out a 20-3/8″(518 mm) square at the installation location. The square must be within 1/8″(3
mm) of the specified cut-out dimension to ensure the rough cut edges will be covered by the light
panel frame after installation.
Install the finished ceiling material (if using tile).
Verify that the finished drop sill is between 3-1/2″(89 mm) and 3-3/4″(95 mm) from the bottom of
the cradle.
5" (127 mm) Typical
4-7/8" (124 mm) Min
Finished
Ceiling 3-5/8" (92 mm) Typical 3-1/2" (89 mm) Min
2x4
Ceiling Joist
2x6
Cut/Modified
Ceiling
Joist
2x4
Finished Ceiling Cutout
Nipple
Pressure
Balancing
Loop
Cutout
20-3/8" +/- 1/8"
(518 mm +/- 3 mm)
20-3/8"
+/- 1/8"
(518 mm
+/- 3 mm)
Kohler Co. 7 1235394-2-A

5. Install Pipe Nipples and Light Panel
CAUTION: Risk of personal injury. If the rain panel is not securely held in place during
installation, the product may fall. Get help installing the light panel assembly and waterways.
Remove the nipples.
Apply thread sealant to the threads of the nipples.
Reinstall the nipples to the tees/elbows.
Run water through the system to flush out any dirt or debris.
IMPORTANT! The following steps require two people.
Lift the light panel up to the installation location and attach the pre-routed chroma power cable to
the light panel assembly.
Insert the light panel into the rough opening of the finished ceiling and hold in place. The light
panel must be supported until it is secured by installing the adapters.
Pipe Nipple
Light Panel Assembly
Finished Ceiling
Chroma
Power Cable
1235394-2-A 8 Kohler Co.

6. Install the Waterway
CAUTION: Risk of personal injury. If the rain panel is not securely held in place during
installation, the product may fall. Get help installing the light panel assembly and waterways.
IMPORTANT! The following steps require two people.
Insert an escutcheon into one of the four openings in the light panel. Orient the double ribs of the
escutcheon toward the center of the panel.
While another person holds the light panel in the rough opening, thread an adapter into the pipe
nipple.
While the other person continues to hold the panel, install the three remaining escutcheons and
adapters to hang the fixture.
Release the panel after the four adapters are installed. The panel will not be tight to the ceiling at
this time.
IMPORTANT! Secure the adapters sufficiently to create a water-tight seal for the pipe threads.
Secure each adapter using the 11 mm bit (provided) with the 11 mm or 7/16″socket extension, and
socket wrench. Use masking tape to hold the bit in place to prevent it from falling off and causing
damage to your shower. The light panel should still sit loosely against the ceiling.
Install the waterway by aligning the notch in the waterway with the double ribs on the inside of the
leak shield.
Press the waterway into place over the adapter. Secure the waterway to the adapter with the screw
provided. Do not completely tighten at this time.
Repeat for the remaining waterways.
Tighten the screws evenly until the outer frame of the panel is against the ceiling, and the sealing
gasket is compressed.
IMPORTANT! If the light panel frame does not meet the ceiling within 1/32″(1 mm), the pipe nipple is
too long. Check the rough depth. Try turning the threaded adapter further, or use a shorter pipe nipple.
Light Panel Frame
Finished Ceiling
Escutcheon Adapter
Notch
Extension
Screw
Waterway
Socket Wrench
With 11 mm Bit Double Ribs
Inside Leak
Shield
Kohler Co. 9 1235394-2-A

7. Install the Trim
Attach the Sprayhead
Using a 5/32″hex wrench, secure the sprayhead to the waterway with the two hex screws. Do not
overtighten.
Check that the sprayhead sits squarely within the escutcheon and tilts freely up and down.
Place the nozzle membrane over the sprayhead, aligning the long edge of the membrane with the
ribs.
NOTE: For optimum performance, make sure the nozzle membrane is applied evenly.
Applying pressure evenly, press the membrane seal into the sprayhead groove.
Repeat for the remaining sprayheads.
Attach the Sprayface
Tilt the sprayhead to expose the ribs.
Position the grooves of the sprayface over the hinge ribs, then rotate the loose end of the sprayface
up as illustrated.
Press the sprayface into place to cover the sprayhead.
Tilt the sprayhead assembly to expose the setscrew holes.
IMPORTANT! To avoid product damage, the setscrews must not protrude beyond the sprayface.
Using a 5/64″hex wrench, turn the setscrews counterclockwise until they are flush with the edge of
the sprayface.
Repeat for the remaining sprayfaces.
Waterway
Sprayhead
Hex Screws
Ribs
Groove
Nozzle Membrane
Escutcheon
Setscrews
Ribs
Sprayface
1235394-2-A 10 Kohler Co.