20
13. COMMISSIONING ThE ShOWER
IMPORTANT:
This MX Thermostatic
shower unit incorporates a commissioning
procedure detailed below. It is important
that this procedure is followed.
1.
Make sure that the electricity supply
has been isolated at the double pole
isolating switch.
2.
Ensure that the water supply is fully on
at the mains stop cock and isolating
service valve (if fitted)
3.
Check that water is not leaking from the
bottom of the case.
4.
Switch on the electrical supply at the
double pole switch or pull cord. The
power on neon indicator will light at the
switch.
5.
On the shower unit press and hold the
warmer (+) and cooler (-) buttons for
a minimum of 3 seconds until COLD
water flows into the shower and through
to the shower handset, and then
release the buttons. When the water is
free flowing and all the air has purged
through the system press the start / stop
button and this will stop the water flow.
7.
Press the start / stop button, you will
hear a single bleep and the water will
flow freely within a few seconds. The
water flow will start at maximum flow
indicated by 3 LEDs around the flow
button.
NOTE:
If the commissioning procedure is
not used the heaters will have a 6 second
delay before they are energised to allow
the water to fill the unit (this only happens
on the first start up operation).
IMPORTANT:
If the button does not
respond ensure that the flying lead from
the PCB has been connected to the back
of the front cover. Ensure front cover
is isolated at the mains supply before
removing.
9.
The “Secret Until Illuminated” seven
segment display will activate and
show digit 8 for the Thermostatic Care
model which indicates the FIXED pre-
programmed start up temperature.
The Thermostatic Plus models are
supplied with MEMORY start up
temperature setting which will be as
per the last shower, however it may be
necessary to adjust to digit 8 at initial
start up. On all models the flow starts
at the maximum level clearly indicated
by the 3 illuminated LEDs.
10.
The shower will start to heat the water.
A double bleep indicates when the
pre-programmed start up temperature
has been reached. Please note this
could take up to 30 seconds if the
shower is starting from cold. The unit
will automatically adjust the water flow
if required.
11.
Check the operation of the
temperature control buttons by
pressing the cooler (-) button once.
The temperature digit will change to
show 7 confirmed by a single bleep (if
audio not de-selected on installation).
Keep pressing the cooler button
repeatedly until the digit reaches 1,
which when stable will give a nominal
outlet temperature of 30 ºC.
IMPORTANT
The shower unit must be full of water before heat settings are used.
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