Commissioning
After installation, the valve should be tested and commissioned in accordance with AS 4032.3,
as per the procedure outlined below or as specified by the local authority.
The following instructions should be read and understood prior to commissioning the Caleffi
2522HP series valve. If, under any circumstances, there are aspects of the installation/system
which do not comply with the requirements or the specifications as laid down, the valve must
not be put into service until it does comply.
1) Ensure that the system is thoroughly clean and free from debris prior to commissioning the
tempering valve.
2) Measure the mixed water temperature at the nearest outlet (we recommend using an
accurate digital thermometer).
3) The temperature of the mixed water supplied to an outlet primarily for personal hygiene
purposes shall be in accordance with the requirements of AS/NZS 3500.
4) Once the supply temperatures and normal operating conditions have stabilised, the valve
can be commissioned. The temperature setting can be adjusted by removing the cap and
rotating temperature adjustment spindle.
We suggest that the following sequence is followed when commissioning the valve.
a) Set the mixed water discharge temperature to the required temperature.
b) Measure the temperature of hot and cold water at the inlets of the valve.
c) Measure the temperature of discharged mixed water for high and low flow conditions.
d) Perform the thermal shut-off test, by isolating the cold water supply to the Caleffi 2522HP
valve and monitor the mixed water temperature. The outlet flow should quickly cease.
e) Restore the cold water supply to the valve and measure the mixed water temperature
when it has stabilised. The final temperature found during this test should not exceed the
set temperature by +3°C.
5) Once commissioning is completed, lock the temperature adjustment spindle using the
locking nut supplied and secure the cap back on to the valve to prevent tampering by
unauthorised persons.
6) Complete the “TEMPERING VALVE FITTED” label and affix it to the water heater (or where
required by the Local Authority).
8
Instantaneous
system
MAINS
SUPPLY
INSTANTA-
NEOUS
WATER
HEATER
