CEX-O & CEX-U Installation, Maintenance and User Instructions - August 2011
10
Fig 6
Fig 7
Commissioning
Before switching on the power supply, ensure the appliance
is completely filled with water by carefully opening and
closing the hot water tap until all air has been eliminated
from the water heater and no more air emerges.
Each time the appliance is drained (e.g. after work on the
plumbing system or following repairs to the appliance), the
heater must be re-vented in this way before reconnecting
the power supply.
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 9.6kW or 7.2kW 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.
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
below “Reinstallation”.
3. Use the arrow up and arrow down keys to select the
required maximum power rating. Display “88” for 8.8kW
at 230V (9.6kW at 240V) or display “66” for 6.6kW at
230V (7.2kW at 240V).
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.
7. Open the hot water tap and check the appliance is
functioning correctly.
8. Explain operation of the appliance to the end user and
leave the operating instructions for their reference.
9. Complete the product registration card and return it to
Zip Heaters or register the product on line at
www.zipheaters.co.uk
Multiple Power System:
The maximum power
rating is 9.6kW and can
be changed to 7.2kW
during installation.
CEX pages qxd:Varipoint qxd 30/8/11 14:27 Page 9