MIXED
COLD
Shower installation
MIXED
COLD
HOT
HOT
Diagram 3 Typical Installations
-
Diagram 4 Valve Adjustment
-
Troubleshooting Guide
FAULT/SYMPTOM
CAUSE
SOLUTION
1. The desired mixed
water temperature
cannot be obtained or
valve is difficult to set.
2. Mix temperature
unstable or changing
over time.
3. Either full hot or full
cold water flowing
from outlet fixture.
4. No flow from the
valve outlet.
5.
Fl
ow
rate reduced or
fluctuating.
6. Mixed water
temperature does
not change when
temperature adjuster
is altered.
7. Valve is noisy.
• Inlet temperatures are
not within specific
limits.
• Hot and cold supplies
are reversed.
• Fluctuating supply
pressures.
• Valve is incorrectly set.
• Hot and cold supplies
are reversed .
• Hot or cold water
supply failure.
• Filter is blocked.
• Fluctuating supply
pressures.
• Filter is blocked.
• Hot and cold supplies
are reversed.
• Excessive water
velocity.
• Valve sized incorrectly.
• Ensure inlet
temperatures are
within the specified
limits for the valve.
• Refit the valve with
Hot/Cold supplies
fitted to the correct
connections.
• Install pressure
regulating valves on
both hot and cold
supplies.
• Adjust mix temperature
as required.
• Refit the valve with
Hot/Cold supplies fitted
to the correct
connections.
• Restore inlet supplies
and check mix
temperature .
• Clean filter .
• Install pressure
regulating valves.
• Clean filter.
• Refit the valve with
Hot/Cold supplies fitted
to the correct connections.
• Reduce water velocity
(best achieved by fitting a
pressure regulating valve).
• Check valve specifications
and ensure the appropriate
valve is used for reguired
flow.
Notes
:
Fitting the Valve
• The mixed water outlet from the valve should be used to supply
outlets used primarily for personal hygiene purposes.
• It is recommended that the valve is installed as close as possible
to the point of use; however , it may be fitted anywhere on the hot
water supply pipe.
TEMPERATURE ADJUSTMENT
• Prior to setting the valve it is necessary for the hot water source to
be switched on and delivering hot water at the designated tempera-
ture .
• Test the mixed water temperature at the nearest outlet being
supplied by the valve. This should be opened to allow a flow rate of
1 to 1.5 gpm (4 to 6 Llmin).
• A thermometer must be used at the nearest outlet to the valve to
ensure the correct mixed water temperature is achieved.
• Allow the water to run for at least one minute to ensure the mixed
water temperature has settled.
• To adjust the mixed outlet temperature of the valve, remove the
cap to gain access to the adjusting spindle. The spindle should be
rotated-clockwise to reduce the temperature, counter-clockwise to
increase the temperature- until the desired set point is reached.
(Refer to diagram 4).
• Once the set temperature is achieved, the cap should be snapped
onto the valve to cover the spindle.
CHECKING / SERVICING THE VALVE
• We recommend that the valve is checked at least once per year to
ensure its continued function. For installations with poor or
unknown water quality, or other adverse supply conditions , it may
be necessary to check the valve at more frequent intervals.
• The temperature should be checked at the same outlet as was
used for commissioning in the first instance. If the temperature is
more than 3°F from the commissioning temperature, refer to fault
finding guide on the next page.
• There may be some variation in the temperature of the water from
the thermostatic mixing valve due to seasonal temperature
variations in the cold water supply.
• If the water supply is of poor quality, a filter or strainer should
be fitted to the system.
Installer, please provide the following information and leave these
instructions with the client.
Installed By:
Date:
Pressure At the Valve:
PSI
Mix Temperature:
F
Multiple Sensor Faucet Installation
