Details of the recommended code of
practice for safe water temperatures can
be found on the Thermostatic Mixing
Valve Manufactures Association web site:
www.tmva.org.uk
The rear temperature handle extension (20) can
be fitted on to the thermostatic cartridge (19) in
any position.
The temperature adjustment carrier (21) will
need to be refitted with the triangular raised
mark on the rear of the carrier in the top posi-
tion. Providing this assembly has not been sep-
arated, (i.e. the red clip removed) the unit will
remain calibrated and no adjustments will be
required. Ensure that the front handle carrier is
rotated fully anticlockwise before refitting
otherwise difficulty will be experienced in fitting
the temperature adjustment carrier to the rear
temperature extension. The temperature handle
is then refitted with the override button again in
the top position.
CALIBRATION
Trevi thermostats are factory calibrated and
require no further calibartion during installa-
tion. However, if the temperature adjustment
carrier is accidentally disturbed and the calibra-
tion altered it is a simple procedure to recali-
brate the unit. Before starting this you will need
to ensure the hot supply temperature is above
52ºC.
1. Remove the temperature control handle.
2. Remove the red U-clip (b) from the temper-
ature adjustment carrier. Remove the front
carrier (e).
3. Ensure the raised triangular mark (a) on the
rear handle carrier is to the top.
4. Rotate the temperature adjusting spindle
(d) until a temperature of 40ºC is measured
at the outlet.
5. Replace the front handle carrier ensuring
the triangular indent (c) is to the top.
6. Refit the red U-clip.
7. Refit the temperature handle.
Figure 12
CALIBRATION
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