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3. INSTALLATION
CONSTRUCT FRAMING AND INSTALL
ROUGH PLUMBING
Determine the desired location for the valve according to
the rough-in information on Page 3, and construct
suitable stud and support framing.
Use 3/4" nominal copper tubing and fittings throughout
this installation. Smaller diameter piping upstream or
downstream of the valve will reduce the performance of
the valve.
INSTALL VALVE
Flush the hot and cold water supply lines to remove any
debris.
CAUTION: Risk of product damage. This valve
contains plastic and rubber components. Do not
apply excessive heat to the valve body when you
make solder connections. Do not apply flux or acids
directly to the valve, as damage to the seals and
plastic components may result. Do not apply
petroleum-based lubricants to the valve components,
as damage may result.
Use thread sealant, and connect the 3/4" hot and cold
water supply lines to the valve inlet ports. Install water
hammer arrestors in the supply lines. The inlet ports
are marked "HOT" and "COLD", and must be connected
to the correct water supply lines to ensure proper valve
function. Make sure the integral volume control/shut-off
valve on the K-401 is on top.
Connect the water outlet lines to the valve ports. Use a
3/4" plug for any unused outlet port.
The plaster guard is attached to the face of the mixing
valve with two screws. Do not remove the plaster guard
until instructed. Use the plaster guard to determine the
depth of the valve in the wall, and to trace the cut-out line
in the wall material. The finished wall surface must be
within the MIN. - MAX. depth shown on the plaster guard.
Secure the water supply piping to the support framing.
Kohler Co., Kohler, WI U.S.A.
Hot Water
Supply Line
Hot Water
Supply Line
5
Cold Water
Supply Line
K-401
Cold Water
Supply Line
K-400
Fig. #4
Finished Wall
Plaster
Guard
11/16"
(1.7cm)
1-9/16" (4cm) –
2-1/4" (5.7cm)
Fig. #5
1012606-2-
A
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