© Intatec Ltd. 2009
Intatec Ltd
Airfield Industrial Estate
Hixon
Staffordshire
ST18 0PF
Tel: 01889 207200
Fax: 01889 271172
email: sales@intatec.co.uk
web: www.intatec.co.uk
E & O.E 02/09
In Service Testing
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.
1. Measure the mixed water temperature at the outlet.
2. Carry out the cold water supply isolation test by isolating the cold water supply to the shower, wait for
five seconds if water is still flowing check that the temperature is below 43˚C.
3. If there is no significant change to the set outlet temperature (±2˚C or less from the original settings)
and the fail-safe shut off is functioning, then the valve is working correctly and no further service work
is required.
Notes:
•
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 2˚C 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
stablise.
•
The sensing part of the thermometer probe must be fully submerged in the water that is to be tested.
•
Any thermostatic shower that has been adjusted or serviced must be re-commissioned and re-tested
in accordance with the manufacturers’ instructions
