Commissioning
After installation, the mixing valve must be tested and commissioned by an authorised technician in
accordance with the procedure given below and as specified by current applicable legislation.
The following instructions must be read and understood before commissioning the mixing valve of Caleffi 262
and 263 series kits.
If there are any aspects of the installation or the system which do not correspond to the specified
requirements, the valve must not be commissioned until the installation/system is made to conform to the
said requirements.
1) Make sure that the system is clean and free from dirt before commissioning the thermostatic mixing valve.
2) It is recommended to set the mixed water temperature with a calibrated digital thermometer. The valve
must be commissioned by measuring the mixed water temperature at the user tap outlet.
3) Depending on the intended use and associated risk, the oulet temperature must be adjusted so as to
avoid any danger for the user and comply with applicable legislation.
4) The temperature at the valve outlet must be adjusted by taking into account any potential fluctuations caused by simultaneous water drawing off.
These conditions must be stabilised before the valve is commissioned.
5) The temperature may be adjusted using the control knob on the mixing valve.
a) Adjust the temperature of the mixed water to the desired value.
b) Measure and record the temperature at the cold and hot water inlets.
c) Measure and record the temperature of the water at the tap outlet at the lowest and highest flow rate.
d) Perform a test of the anti-scald thermal shut-off function.
Close the shut-off valve at the cold water inlet and check the mixed water outlet. The flow rate at the outlet should quickly drop to zero.
e) Measure and record the maximum mixed water temperature. The temperature may not exceed the values permitted in any applicable legislation
or code of practice.
f) Restore the cold water inlet supply and measure the water temperature at the outlet after it has stabilized. The final temperature measured in
this test may not exceed the permitted values ±2°C.
It is recommended to register all the above information in the commissioning report and updated in the maintenance report whenever the valve is
worked on.
Assembly
1.
Remove the protective cover.
2.
Connect the system connection pipes to the kit with mixing valve;
3.
Fit the protection cover onto the kit with mixing valve;
4.
Connect the pipes to the boiler.
Factory configurations
Diverter valve: 45°C
Thermostatic control device: 30°C
Temperature setpoint adjustment
The diverter valve is factory set to operate at a temperature of 45°C, diverting water to the boiler if the
temperature is lower than this setpoint value. The set temperature value is fixed using a locking ring.
The 263 series thermostatic control device is factory set and fixed to keep constantly at 30°C the
temperature of the water at the boiler inlet.
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