March / 2014
Page 9
CEX-O_CEX-U_Installation, Maintenance and User Instructions V1.02
Multiple Power System:
The maximum power rating is
8.8kW and can be changed to
6.6kW during installation.
Commissioning
CAUTION
To prevent damage to the appliance, the instantaneous
water heater must be purged of air before using it for
the first time.
PURGING
Before connecting the electrical supply, open and close the
hot water tap until the water runs smoothly and no more air
emerges.
NOTE! Every time the appliance is drained (e.g. after
work on the plumbing system, if there is a risk of frost
or following repair work), the heater must be purged in
this way before reconnecting the power supply.
WARNING!
This appliance must be earthed.
If the appliance does not operate after connecting the power
supply check that the safety thermal cut-out (STDB) did not
trip during transportation. To do this open the cover and, if
necessary, re-set the STDB by pushing the switch in (see Fig 6).
Note: Power Rating Selection
The maximum power rating of the appliance can be selected
as either 8.8kW or 6.6kW at the time of installation. The unit
will only commence normal operation after selection of the
power rating. The maximum power rating should only be
selected with reference to the technical data on page 4,
after ensuring that correct cable sizing and fuse protection is
in place and with regard to local site conditions and electrical
regulations.
This should only be done by a competent installer
.
1. Switch on the power supply to the appliance. The digital
display will light up.
Fig. 6
®
2.
When switching on power for the first time “88” will flash on the display (see Fig 7). If not,
please refer to the section “Reinstallation”.
3. Use the arrow up and arrow down keys to select the required maximum power rating.
Display “88” for 8.8kW at 230V or display “66” for 6.6kW at 230V.
4.
Press program key 1 to confirm the selection after which the appliance will start to operate.
5. Mark the set power rating on the product rating plate.
6. After selecting the maximum power rating, the heating element will activate after approximately
10 seconds of continuous water flow.
Fig. 7
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