Commissioning - In Service Testing - Elisa Emilie Manual

16 | Elisa Emilie
TM
Commissioning – in service testing
UK
The first step in commissioning and in service testing of a thermostatic mixing
valve is to check the following:
1. The designation of the thermostatic mixing valve matches the application.
2. The supply pressures are within the valves operating range.
3. The supply temperatures are within the valves operating range.
4. Isolating valves and strainers (filtered washers) are fitted.
If all these conditions are met, proceed to set the temperature as stipulated in the
Cartridge Temperature Adjustment section.
The mixed water temperature at the terminal fitting must never exceed 46ºC.
It is a requirement that all TMV2 approved valves shall be verified against the
original set temperature results once a year.
When commissioning / testing is due the following performance checks
shall be carried out:
• Measure the mixed water temperature at the outlet.
• Carry out the cold water supply isolation test by isolating the cold water supply
to the TMV, wait for five seconds, if the water is still flowing check that the
temperature is below 46ºC.
If there is no significant change to the set outlet temperature (+/-)2ºC or less
change from the original setting) and the fail – safe shut off is functioning, then the
valve is working correctly and no further service work is required.
Note: If there is a residual flow during the commissioning or the annual verification
(cold water supply isolation test), then this is acceptable providing the temperature
of the water seeping from the valve is no more than 2ºC above the designated
maximum mixed water outlet temperature setting of the valve.
Temperature readings should be taken at the normal flow rate after allowing for
the system to stabilise.
Installation Guide
and Rosa
TM TM