Nuie VSQ2, Инструкция по эксплуатации

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18
b) COMMISSIONING
Method for Commissioning Thermostatic Mixing Valves
Purpose
Since the installed supply conditions are likely to be different from those
applied in the laboratory tests it is appropriate, at commissioning, to carry
out some simple checks and tests on each mixing valve to provide a
performance reference point for future in-service tests.
Procedure
Check that:
a)
The designation of the thermostatic mixing valve matches the intended
application.
b) The supply pressures are within the range of operating pressures for the
designation of the valve.
c) The supply temperatures are within the range permitted for the
valve and by guidance information on the prevention of legionella etc.
Adjust the temperature of the mixed water in accordance with the
manufacturer’s instructions and the requirement of the application and
then carry out the following sequence:
a) Record the temperature of the hot and cold water supplies.
b) Record the temperature of the mixed water at the largest draw-off flow
rate.
c) Record the temperature of the mixed water at a smaller draw off flow
rate, which shall be measured.
d) Isolate the cold water supply to the mixing valve and monitor the
mixed water temperature.
e) Record the maximum temperature achieved as a result of (d) and the final
stabilised temperature.
NOTE : The final stabilised mixed water temperature should not exceed the
values in Table 3.
f) Record the equipment, thermometer etc. used for the measurements.