Pre-Delivery/Install Checklist

KOHLER
®
HydroRail shower columns are suitable for both remodeling and new construction applications. They are
designed to allow you to upgrade an existing bath/shower or shower-only installation to a custom shower experience
without major remodeling. When this product is installed in an existing shower, a number of simple steps are required
to ensure the installation can be completed.
Completing the following simple steps will allow you to:
• Ensure existing installation is suitable for the HydroRail shower column
• Identify any remedial work that may be required before the HydroRail column can be installed
• Ensure that the completed installation is physically compatible with the users of the product
• Identify the specific SKU that you need to order your product
HydroRail
™
Shower Column
Before After
Evaluate the Condition of the Existing Shower
In a remodeling application, the HydroRail system replaces the existing showerarm connection to the ½" NPT supply
elbow inside the wall cavity. The HydroRail system requires that the existing pipe work is in good condition and firmly
fixed in place. Pipe work requiring repair or featuring an alternate connection arrangement may require additional
work to facilitate the installation of the HydroRail shower column. Such preparation work may necessitate access into
the wall cavity.
Check:
1. Take hold of the existing showerarm, and carefully check for any movement into the wall cavity. If the existing
supply pipe work in the wall cavity is not already securely fastened, this will need to be corrected before
installation of the HydroRail.
2. Carefully slide the showerarm flange away from the wall, and check the diameter of the hole in the wall. If the
hole diameter is larger than1
1
/
4
", there will not be sufficient material to secure the HydroRail to the wall. Large
escutcheon/mounting collar kits are available (see below), or additional wall surface will need to be added
before installation can proceed.
3. Before sliding the showerarm flange back into place, measure the distance from the elbow in the wall cavity
(the fitting the existing showerarm is connected into) to the finished wall surface. After making the measurement,
follow the instructions in the table below.
4. Check that there are no wall accessories (grab bars, soap trays, etc.) mounted directly between the showerarm
and the valve below. These may need to be removed prior to installation of they HydroRail.
5. To support the column and mounting brackets, the HydroRail requires a shower wall thickness of
3
/
8
".
Distance from elbow in wall cavity
to the shower wall surface Action Required
1
3
/
8
" to 2
7
/
8
"
Use standard product. There is no need to
order additional parts.
0" to 1
3
/
8
"
You need to order shallow rough-in kit
(part number 1187917)
2
7
/
8
" to 4"
You need to order deep rough-in kit
(part number 1194630)
Outside above ranges Modification required to pipework
Other Mounting Kits Available:
Large escutcheon/mounting collar kit - part number 1194302 (-CP, -BN, -BV, -2BZ, -SN)
During