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Adjustable thermostatic mixing valve
Thank you for having chosen our adjustable thermostatic mixing valve. This kit
permits the mixing valve to be easily mounted onto all QL Water heaters.
The kit contains:
Thermostatic mixing valve with ½" feminine fittings
Flexible stainless steel tube ½"
Male-Female- length 400 mm (10")
½" brass "T" fitting
Double ½" brass nipple
½" rubber gasket
Function:
The mixing valve functions automatically. All
you have to do is turn the knob in the desired
direction in order to obtain a temperature
between 30°C (86 °F) and 48 °C (118 °F),
with a tolerance of ± 5 °C (±40°F). The
reliability of the device is assured due to its
simple design and no need of auxiliar y
energy. A thermostatic bulb senses the
temperature of the mixed water and main-
tains it by changing the amount of hot or cold
water mixed.
Installation and adjustment:
IMPOR TANT! You must assure the
seals by using hemp, Teflon or Loctite 572.
1. Turn off the electrical connection to the
water heater.
2. Close the cold water in-feed to the water
heater.
3. Open the water heater's drain valve
which is located on the safety non-return
valve in order to relieve the pressure in
the water heater (see point on the
plumbing connection diagram in
instructions manual of water heater).
4. Screw the fitting of the thermostatic
mixing valve marked with the red dot
onto the 1/2" male thread of the hot
water outlet of the water heater (see
point on the plumbing connection
diagram in instructions manual of water
heater).
5. Screw the flexible tube to the fitting of
the thermostatic mixing valve marked
with the blue dot.
6. Screw the ½" "T" fitting to the safety non
return valve located on the water heater.
7. Screw the double ½" nipple onto the
central boss of the ½" "T" fitting .
NOTE! In order to obtain a correct mix, the
pressure of the hot and cold water must be
the more or less the same.
Characteristics:
Temperature range:
30°–48 °C ± 5°C (86°F–118°F ± 40°F)
Flow rate Dp 1 bar (14,5 Psi) (kv):
1.300 l/h (347 US gals/h)
Max. temperature: 110°C (232°F)
Max. pressure: 10 bar (145 Psi)
8. Connect the flexible stainless steel tube
to the nipple in such a way that the tube
does not impede the access to the
electrical parts of the water heater. Use
the rubber gasket to maintain the
watertight seal.
9. Connect the fitting of the thermostatic
mixing valve marked with "MIX" to the
hot water outlet pipework.
10. Close the drain valve on the safety non
return valve.
11. Open the cold water in-feed valve to the
water heater.
12. Allow the water heater to heat the water.
13. Adjust the knob of the mixing valve in
order to achieve the desired tempera-
ture.
Should you desire to exclude the function of
the thermostatic mixing valve it is necessar y
to install a gate valve between ½" "T" fitting
and the thermostatic mixing valve. When the
gate valve is shut, thus not allowing the flow
of cold water, the mixing valve does not mix
the water.
English
1
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