Use and Care Manual

Installation
The installation instructions below represent
the use of KERDI-DRAIN and KERDI-LINE
in floor applications. Installation instructions
for the use of KERDI-DRAIN and KERDI-
LINE in shower applications can be found
in the Schluter
®
-Shower System Installation
Handbook.
KERDI-DRAIN
Preparation
After locating the correct position, cut a
hole in the substrate for the drain outlet
and coupling to the waste line using the
template provided. Note: Fill in box-outs
in concrete floors with dry-pack mortar.
A pipe coupling or similar can be used
as a form around the waste line. Select
form to accommodate the drain outlet
and mechanical no-hub coupling (when
applicable). Limit the diameter of the hole
to 5" (125 mm) maximum to ensure proper
support of the tile assembly. A larger hole
can lead to lack of support and damage the
tile assembly (e.g., cracked grout around
drain).
Drain installation
Access to plumbing from below
If there is access to the plumbing from
below and the waste line can be connected
after installing KERDI-DRAIN, the drain can
be installed in conjunction with the mortar
bed.
1. Place a ring of loose mortar up to the
inlet hole in the floor and firmly press
the drain into the mortar. The bonding
flange must be fully supported to prevent
damage to the tile assembly (e.g.,
cracked grout around drain). When
installing KERDI-DRAIN over wood
substrates, the minimum thickness of
mortar required at the perimeter of the
bonding flange is 1" (25 mm).
2. The screed is then placed flush with the
top of the bonding flange of the KERDI-
DRAIN. Slope the mortar bed using the
bonding flange and mortar screeds as
guides.
No access to plumbing from below
When there is no access to the plumbing
from below, install the KERDI-DRAIN to the
appropriate height prior to the installation of
the shower base.
1. Begin the drain installation by dry fitting
the components. Measure and cut a
section of pipe to connect the KERDI-
DRAIN to the odor trap below the floor,
using the foam spacers included with
the drain as a spacer. When installing
KERDI-DRAIN over wood substrates, the
minimum thickness of mortar required
at the perimeter of the bonding flange is
1" (25 mm).
2. Prepare the odor trap, cut section of
pipe, and KERDI-DRAIN with cleaner,
primer and ABS or PVC cement per
the solvent cement manufacturer’s
instructions and connect.
3. Pack loose mortar under the drain up
to the inlet hole to ensure solid and
uniform support of the bonding flange.
The screed is then placed flush with the
top of the bonding flange of the KERDI-
DRAIN. Slope the mortar bed using the
bonding flange and mortar screeds as
guides.
Clamping ring drain already installed
If a clamping ring drain is already installed,
the drain must be replaced with KERDI-
DRAIN or converted using the KERDI-
DRAIN adaptor kit.
1. If using the KERDI-DRAIN adaptor kit,
remove the clamping ring from the
installed drain and save the bolts for
installation of the adaptor ring. Align
the bolt pattern of the clamping ring
with the matching punch-outs in the
adaptor ring. Punch the matching
inserts out through the stainless steel
adaptor ring.
2. Apply a continuous 1/4" - 3/8" (6 -
10 mm) bead of KERDI-FIX to the
underside of the adaptor ring. Align
the holes in the adaptor ring with the
bolt holes in the installed drain and
place the adaptor ring on the installed
drain flange. Re-insert and tighten
the bolts using a star pattern. Bolts
are to be finger-tight plus 1/4 turn; do
not overtighten, as this may warp the
adaptor ring and result in leaks.
3. Slide the adaptor flange into the adaptor
ring and ensure full support under the
adaptor flange with mortar. The screed
is then placed flush with the top of the
bonding flange of the KERDI-DRAIN.
Slope the mortar bed using the bonding
flange and mortar screeds as guides.
Note: Schluter
®
-Systems recommends a
leak test be performed on the connection
between the drain and the waste line prior
to continuing with the remainder of the
installation whenever possible.
Connection to waterproofing
membranes
The KERDI or DITRA waterproofing
membranes can be installed over the mortar
bed as soon as it can be walked upon.
KERDI
1. Apply unmodified thin-set mortar to
the bonding flange and surrounding
mortar bed with a 1/4" x 3/16" (6 x
5 mm) V-notched trowel or the
KERDI-TROWEL, which features a
1/8" x 1/8" (3 x 3 mm) square-notched
design. The thin-set mortar must be
mixed to a fairly fluid consistency, but
still able to hold a notch.
Note: When using the stainless steel
bonding flange, the membrane is
bonded to the integrated bonding
flange with KERDI-FIX adhesive/
sealant. The stainless steel bonding
flange must be clean and free of grease
or other contaminants prior to KERDI-
FIX application.
2. Embed KERDI in the bond coat and
work the membrane onto the KERDI-
DRAIN bonding flange and mortar bed
with the flat side of the trowel to ensure
full coverage and remove air pockets.
The membrane is carried to the step in
the bonding flange (template provided).
DITRA or DITRA-XL
1. DITRA or DITRA-XL is installed up to
the outer edge of the KERDI-DRAIN
bonding flange. Apply unmodified
thin-set mortar to the mortar bed
surrounding KERDI-DRAIN with a
1/4" x 3/16" (6 x 5 mm) V-notched
trowel or the DITRA-TROWEL, which
features an 11/64" x 11/64" (4.5 x
4.5 mm) square-notched design. The
thin-set mortar must be mixed to a
fairly fluid consistency, but still able to
hold a notch. Solidly embed the matting
into the bond coat using a float, screed
trowel, or DITRA-ROLLER.
2. DITRA or DITRA-XL is sealed to the
KERDI-DRAIN bonding flange using a
cut section of the KERDI membrane.
Apply unmodified thin-set mortar to
the bonding flange and surrounding
membrane with a 1/4" x 3/16"
(6 x 5 mm) V-notched trowel or the KERDI-
TROWEL, which features a 1/8" x 1/8"
(3 x 3 mm) square-notched design.
FLOOR DRAINS
3