3
Adjusting the Rotational Limit Stop – Identify RLS type from
pages 4-5.
IMPORTANT:
The Rotational Limit Stop is used to limit
the amount of hot water available such that,
if set properly, the user will not be scalded
if the handle accidentally is rotated all the
way to "hot" when a person is showering
or filling a tub. The first position allows
the LEAST amount of hot water to mix
with the cold water in the system. In the
first position the water will be the coldest
possible when the handle is turned all the
way to hot. As you move the Rotational Limit
Stop counterclockwise, you progressively
add more and more hot water in the mix.
The last position to the left will result in the
greatest amount of hot water to the mix, and
the greatest risk of scald injury if someone
accidentally turns the valve handle all the
way to the hot side while showering or filling
a tub.
WARNING: In some instances, setting
the Rotational Limit Stop in the hottest
position (full counterclockwise) could
result in scald injury. It is necessary to
adjust the Rotational Limit Stop so that
the water coming out of the valve will not
scald the user when the handle of the
valve is rotated to the hot side.
• According to the majority of industry
standards, the maximum allowable
temperature of the water exiting the valve
is 120°F (Your local plumbing codes may
require a water temperature less than
120°F).
• The Rotational Limit Stop may need to
be readjusted seasonally if the inlet water
temperature changes. For example, during
the winter, the cold water temperature is
Hotter
Disc
Stem
RLS with removable disc
colder than it is during the summer which
could result in varying outlet temperatures.
A water temperature for a comfortable bath
or shower is typically between 90°F - 110°F.
• Run the water so that the cold water is
as cold as it will get and hot water is as hot
as it will get. Place the handle on the stem
(see page 7, step 4D) and rotate the handle
counterclockwise until the handle stops.
• Place a thermometer in a plastic tumbler
and hold in the water stream. If the water
temperature is above 120°F, the Rotational
Limit Stop must be repositioned clockwise
to decrease valve outlet water temperature
to be less than 120°F or to meet the
requirements of your local plumbing codes.
• To adjust the temperature of the water
coming out of the valve, pull the disc back
to a position where it is possible to remove
the Rotational Limit Stop and readjust the
teeth engagement position to the desired
temperature. Clockwise will decrease
the outlet temperature, counterclockwise
will increase the outlet temperature.
Temperature change per tooth (notch)
could be 4° - 16°F based on inlet water
conditions. Repeat as necessary.
Push disc until fully seated.
WARNING: Failure to re-install Disc
after setting Rotational Limit Stop could
result in scald injury.
• MAKE SURE COLD WATER FLOWS
FROM THE VALVE FIRST. MAKE SURE
WATER FLOWING FROM THE VALVE
AT THE HOTTEST FLOW POSSIBLE
DOES NOT EXCEED 120°F OR THE
MAXIMUM ALLOWED BY YOUR LOCAL
PLUMBING CODE.
4
1st Position
109507 Rev. B