PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL
REQUIREMENTS, WARNINGS AND CAUTIONS. USE THIS PRODUCT CORRECTLY AND WITH
CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE
DAMAGE AND/OR PERSONAL INJURY, AND WILL INVALIDATE THE WARRANTY. RETAIN THESE
INSTRUCTIONS FOR FUTURE USE.
WARNINGS
• Installation, commissioning and maintenance of this appliance
must only be carried out by a competent installer who will
then be responsible for adhering to all relevant standards and
regulations.
• If inlet temperature is up to 70 °C (eg. fed from a solar supply)
mixing with cold water will be required to ensure a safe
temperature at the outlet.
• Do not remove the front cover under any circumstances before
switching off the mains electrical supply to the unit.
• Never make technical modifications, either to the appliance
itself or the electrical leads and water pipes.
The appliance must be earthed at all times.
•
• Pay attention to the fact that water temperatures in excess of
approx. 43 °C are perceived as hot, especially by children, and
may cause a feeling of burning. Please note that the fittings
and taps may be very hot when the appliance has been in use
for some time.
• The values stated on the rating plate must be observed.
• In case of malfunction, disconnect the mains power supply
immediately. In case of leaks, cut off the mains water supply
instantly. Repairs must only be carried out by the customer
service department or an authorised professional.
• This appliance can be used by children aged 3 years and
above and persons with reduced physical, sensory or mental
capabilities or lack of experience and knowledge if they have
been given supervision or ins truction concerning use of the
appliance in a safe way and understand the hazards involved.
Children shall not play with the appliance. Cleaning and
user maintenance shall not be performed by children without
supervision.
• If the appliance is factory equipped with a power supply cable,
it must be replaced with an original spare cable from the
manufacturer in case of damage by an authorised technician in
order to avoid any hazards.
• In accordance with EN 60335, the appliance must be
permanently connected to the supply through an isolating
switch with a contact separation of at least 3 mm in all poles
and be protected by a suitably rated RCD.
• The wall bracket must be secured with the supplied screws and
dowels. The appliance must be secured to the wall bracket.
The appliance may only be operated if it has been properly
mounted on the wall bracket.
• The required water resistance may not fall below the value
stated on the rating plate at any time.
To observe additionally for pressureless installation:
• The water outlet behind the devices must not be blocked, and
the water flow must not be restricted.
• The water outlet facilities, such as shower heads must be
decalcified regularly. Deposits must be removed at regular
intervals.
• Only the fittings recommended by the manufacturer may be
used.
• If the appliance is exclusively connected to a single shower,
only the shower heads recommended by the manufacturer may
be used. No other fittings or appliances which decrease the
water flow to the shower may be installed.
• Optimum operation is ensured at a water flow pressure of 0.2
to 0.4 MPa (2-4 bar). The appliance must not be subjected to
pressure exceeding 1.0 MPa (10 bar).
• The appliance must only be used when correctly installed and
in perfect working order.
• The appliance must be installed in a frost-free room and must
never be exposed to frost.
• The CEX-O and CEX-U range is not intended for use with
thermostatic mixing valves or taps. If thermostatic mixing
valves or taps are to be used, their compatibility with the
instantaneous water heater must be verified under site
operating conditions.
• The appliance must be completely filled with water before
being switched on.
• Before commissioning for the first time and each time the
appliance or the piping system is emptied (e.g. due to work
on the plumbing system or maintenance), the appliance must
be purged by opening and closing the hot water tap until all
air has been eliminated from the water heater and no more air
emerges, before re-connecting to the electrical supply.
• The appliance must only be used for heating wholesome (or
cat 1) water. The specific water resistance must not fall below
the required value indicated on the rating plate. The appliance
must not be used for any other purpose.
• Incoming water temperature must not exceed that stated in
Technical data.
• The Zip InLine is intended for connection to mains supply only.
In any other case please contact Zip on 0345 6 005 005 for
advice.
• Zip Water UK cannot be held liable for any damages
caused by failure to observe these instructions.
The instantaneous water heater CEX-U / CEX-O is an electronically controlled,
pressure-resistant water heater for a decentralised hot water supply to one or more
outlets.
Its electronic control regulates the heating power consumption depending on the
selected outlet temperature, the respective inlet temperature and the flow rate, thus
reaching the set temperature exactly to the degree and keeping it constant in case of
pressure fluctuations. The required outlet temperature can be entered on a keypad and
can be read off the digital display.
APPROVALS
Zip InLine CEX-O and CEX-U are VDE approved to the LVD and EMC directives and
are CE marked.
Zip InLine CEX-O and CEX-U have been examined, tested and found when correctly
fitted to comply with the requirements of the United Kingdom Water Regulations /
Byelaws (Scotland).
The products are listed under the WRAS (Water Regulations Advisory Scheme) Water
Fittings and Materials Directory.
Required spec. water resistance @ 15 °C
Spec. electrical conductivity
Inlet temperature≤ 70 °C
Flow rate to switch on – max. flow rate2,0 – 5,0 l/min
Pressure loss0.2 bar at 2.5 l/min 1.3 bar at 9.0 l/min
Temperature choice20 °C – 5 5 °C
Water connectionG ½"
Weight (when filled w. water)2.7 kg
VDE class of protectionI
Water protection classIP25IP24
)
)
)
6.6 kW
(28.7 A)
8.8 kW
(38.3 A)
2
3 × 6 mm23 × 4 mm23 × 6 mm
A
40 %
466 kW h
6.6 kW
(28.7 A)
8.8 kW
(38.3 A)
®
≥ 1100 Ωcm
≤ 90.9 mS/m
1)
2)
2
Type of protection / safety
*) The declaration complies with the EU regulation No 812/2013
1) Flow rate limited to achieve optimum temperature rise
2) Without flow regulator
The cable size may not exceed 10 mm²
All data quoted at nominal supply voltage. Standard European voltage tolerances of -6 % to +10 % may be
applied.
A minimum water pressure of 0.2 MPa (2 bar) is recommended for optimum performance.
Maximum flow rate will be achieved at a water pressure of 0.6 MPa (6 bar).
The appliance must not be subject to more than 1.0 MPa (10 bar).
Instantaneous performance calculations
Temperature rise °C = (Nominal power rating (kW) x 14.3)
• The installation must comply with current IEE regulations and relevant Local
Authority requirements
• The rating plate and technical specifications
• Only functional and appropriate tools must be used during the installation
Installation site
• Appliance must only be installed in frost-free rooms. Never expose appliance to
frost.
• The CEX-O is designed for wall mounted installation and has to be installed with
water connectors downward. CEX-U for under-basin installation must be installed
with the water connections upward.
• The CEX-O complies with protection type IP 25. The CEX-U complies with
protection type IP 24.
• In order to avoid thermal losses, the distance between the instantaneous water
heater and the tapping point should be as small as possible (< 2m).
• For maintenance work, a shut-off valve should be installed in the supply line. The
appliance must be accessible for maintenance work.
• Hot and cold water connecting pipes should be WRAS approved and of copper or
steel construction. Plastic pipes may only be used if they conform to EN 16893,
Series 2. The hot water pipes must be thermally insulated.
• The specific resistance of the water must be at least 1100 Ωcm at 15 °C. The
specific resistance can be asked for with your water supply company.
• When considering the location of the heater, consideration should be given to the
safe and visible disposal of any water resulting from leaks and seepage. This is
particularly relevant when the heater is located in a cupboard or any concealed
location. For guidance please call Zip on 0345 6 005 005.
• Thoroughly flush the water supply pipes
before installation to remove soiling.
• Hold the appliance on the wall, and mark
the drill lines at top and bottom, right and
left, corresponding to the small notches at
the edge of the appliance front cover (see
figure 1). The alignment template (located
on the pull-out pages in the middle of this
manual) may be used for this purpose.
• Connect the top and bottom marks
vertically with each other (A–A).
• Connect the right and left marks
horizontally with each other (B–B).
• The intersections of these lines are the
drill points (see figure 2).
• Drill the holes using a 6 mm drill. Insert
the included dowels and screws. The
screws have to protrude 5 mm.
• Hang up the appliance into the rear
hanging openings until it clicks into place
(see figure 3).
Fig. 1
Fig. 2
Fig. 3
37
140
Installing the appliance
• Attach the water connection pipes to the
appliance’s water connection. Use the
½ inch seals.
• Open and close the hot water tap until no
more air emerges from the pipe and all air
has been eliminated from the water heater.
Check that the power supply is
switched off prior to electrical
connection!
• Dismantle off the power cable in order to
insert the cable with its outer insulation
through the water splash protection sleeve
up to the cord grip into the appliance.
• Lead the cable through the water splash
protection sleeve into the appliance in order
to securely fix the outer insulation of the
cable with the cord grip. If necessary, use
one of the three predetermined breaking
points for the cable entry (at the right, left or
top). The protective sleeve prevents water
from entering the appliance alongside the
connection line. The protection sleeve must
be used!
• Mount the cord grip. The cord grip must be
used!
• Strip the cables and plug them in the
connecting terminals according to the wiring
diagram. The appliance must be earthed.
• Ensure that all connections are fully
tightened and secure.
• Following electrical connection, fit the front
cover. Make sure not to trap any cables
between the front cover and the body of the
appliance.
To prevent damage to the appliance,
the instantaneous water heater must be
purged of air before using it for the first time.
Before connecting the electrical supply, open
and close the hot water tap until the water runs
smoothly and no more air emerges.
To ensure a maximum flow, remove any
existing aerator from the tap. Flush the warm
and cold water pipes each at least for one
minute.
After every draining (e.g. after work on the
plumbing sys tem or following repairs to the
appli ance), the heater must be re-purged in this
way before starting it up again.
If the water heater does not function, the
temperature cut-out or the pressure cut-out may
have tripped during transport. If necessary, reset
the cut-out.
Selection of power rating
Only undertaken by a competent person
familiar with electric instantaneous water
heaters.
Upon first connection of the appliance to the supply
voltage, select the maximum power rating.
The maximum power rating of the appliance can
be selected as either 8.8 kW or 6.6 kW at the time
of installation. The appliance 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 table,
after ensuring that correct cable sizing and fuse
protection is in place and with regard to local site
conditions and IEE electrical regulations.
• Switch on the power supply to the appliance.
The digital display on the appliance must light
up.
• When switching on the power supply for the first
time, the value “88“ flashes in the display. If not,
please carefully read the Re installation section
Fig. 7
®
Multiple Power System:
The rated capacity (max. power
consumption) is 8.8 kW / 230 V
and can be reduced to 6.6 kW.
• Select the maximum allowable power rating depending on the local situation via the
up
and down arrow keys: 8.8 kW (display “88”) or 6.6 kW (display: “66“) 230 V.
• Press key
• Mark the set power rating on the rating plate.
• Open the hot water tap. Check the function of the appliance.
• After having set the maximum allowable power rating, the heating element will be
activated after approx. 10 - 30 seconds of water flow.
• Explain operation of the appliance to the end user and leave the operating
instructions for their reference.
• Complete the product registration card and return it to Zip or register the product on
line at www.zipwater.co.uk/product-registration.
to confirm the setting. The appliance starts operating.
Reinstallation
• If the appliance is to be recommissioned
under different installation conditions it may be
necessary to alter the maximum power rating.
• This should only be done by a competent installer.
• To re-set the maximum power rating use a
screwdriver (compliant to EN 60900, current
issue) to short circuit the two pins as shown in
Fig. 9.
• This will reset all heater parameters to factory
settings.
• Value “88” will flash in the display panel until the
maximum power rating has been selected.
Shower application
The water heater’s temperature must be limited to
55 °C, if it is connected to a shower. The service
menu parameter “Temperature Limit“ (“tL”) must be
set to a value less or equal 55 °C (in consultation
with the customer) and the lock level must be
activated.
When the device is operated with preheated water,
it must be ensured that this temperature is limited to
55 °C as well.
The service menu offers an overview of system
parameters and is used for diagnostics.
Press key
and key simultaneously for at least
2 seconds to call up the service menu, the display
confirms by “FL” and by a flashing point. Use
the arrow keys
and , to switch between the
individual menu items.
Press key
to see the value of the currently
selected menu. The value flashes in the display.
(The value of some parameters can be adjusted
by using the arrow keys
the drop-down-menu by pressing key
With key
return to the standard display (nominal
value). After two minutes without any key stroke the
system automatically switches back to the standard
display.
Flow
Flow: Flow rate (l/min)
Power
Power: Power consumption (kW)
Temp in
Temp in: Inlet temperature (°C)
and .) Get back to
again.
1
+
Press
≥ 2 sec
4
5
Display flashes
9
Open service menu
2
3
6
8
7
Installation instructions & user manual
16
9120-25693 v3.00 Oct 2018 - ZIP CEX
Temp out
Temp out: Outlet temperature (°C)
Control value
Control value: Calibration value of the control system (40 - 60)
Power limit
Power limit: Maximum power setting (kW)
Diagnostics
Diagnostics: Last ten diagnostic messages (see below)
Lock level
Lock level: Current lock level setting (see below)
Software version
Software version: Installed software version
Radio channel
Radio channel: Radio channel of heater and remote control
Received strength
Received strength: Signal quality of remote control (10% - 100%)
Temperature limit
Temperature Limit: Set maximum temperature limitation (°C)
Signal
Signal: Quality of radio contact with diagnostic display
The error code is indicated by the first displayed value after pressing key
“Trouble-Shooting & Diagnostics” in the front cover). By using the arrow keys
the last 10 error codes are displayed chronologically. The display indicates in turn
the error numbers from “0” to “9“ and the corresponding error. The last error will be
recorded at position “0” and the former ones each shifted 1 position backwards.
“LL“: Lock level
The operating mode of the appliance can be restricted.
Setting Options:
• “0” no restriction (factory setting)
• “1” Disables “Reset to factory setting”. Parameters can be seen, but not be
modified in setup menu
• “2” As “1”, additionally service menu cannot be displayed.
• “3” As “2”, additionally program 1 and 2 set temperature values cannot be changed
• “4” As “3”, additionally set temperature value on appliance cannot be changed.
Note: When lock level 1, 2, 3 or 4 is selected the system parameters cannot be
modified in the service menu.
In order to modify system parameters it is necessary to remove the jumper from
the main PCB as described under “Deactivation of the lock level”.
To set the required temperature gradually to a lower
or higher value, use the arrow keys
and .
• Pressing a key once briefly changes the
temperature by 0.5°C between 35°C and 42°C
and by 1°C outside that range.
• Pressing a key for a longer time changes the
temperature continuously.
Note: If temperature is set below 20 °C with arrow
key
the display shows “--“ and the appliance
switches off the heating function.
Note: If the water heater supplies a shower, the
maximum temperature was reduced during initial
operation. This limitation cannot be exceeded.
Programme buttons
The two programme buttons allow to quickly
select the preset temperature. When pressing a
programme key, the preset temperature is selected
and displayed. The factory setting for programme
is 35 °C and for programme
settings for the programme keys:
• Prolonged pressing of the programme key stores
the previously selected temperature. The display
changes from ”P1” or “P2“ to the newly stored
temperature value. This newly set temperature
is now available each time you press the
corresponding program key.
it is 48 °C. To assign
1
Set temperature
–1 °C
Convenience zone 35,0..42,0 °C
1
–0,5
°C
Select preset temperature
A1A2
B1B2
1
43
Display of new value
Store temperature
Set required
temperature
(e.g. 43 °C)
(e.g. 43 °C)
2
≥ 3 sec
+1 °C
+0,5 °C
Press
Temperature limitation
This instantaneous water heater is equipped with an
optional temperature limiting function. This scalding
protection is deactivated in the factory setting.
• Switch on: Select the limit tempe ra ture, then press
and simul taneously for at least 3 sec. The
dis play briefly confirms the activation by “HI“.
• Switch off: press program key
simultaneously for at least 3 sec. The display
briefly confirms the deactivation by “--“.
Note: By activation of the temperature limit also
the programme keys are affected. Therefore,
the fixed values of the programme keys must
be checked after changing the temperature
limitation.
Reset to factory setting
All factory settings can be recalled:
• Press
counts backwards from “10“ to “00“ in second
intervals. The appliance is reset at value “00“
and simultaneously. The display now
Temperature limit off
1
+
Press
≥ 3 sek
1
+
Press + hold!
Reset
2
Conrmation
of deactivation
2
3
• Stop pressing the keys prior to this to cancel the
process.
Reset
completed
How to save energy
Set the exact temperature on the appliance and open the hot water tap. If the water
feels too hot, do not add any cold water, instead, enter a lower temperature on the
appliance. If you were to add cold water, the water already heated would cool down
again and valuable energy would be wasted. Moreover, the cold water added in the
tap is not covered by the control range of the electronic circuitry, with the result that a
constant temperature is no longer guaranteed.
ECO mode
The symbol shows that the appliance works in an energy saving mode (i.e. the
momentary energy consumption is subject to the selected temperature and to the flow
rate in the energy saving mode.
Power limit
• If the maximum power available from the
appliance is insufficient to heat the volume of hot
water being drawn off to the required temperature
this will be indicated by “MAX” on the display.
When operating with preheated water (e.g. with solar
systems), ensure that the maximum inlet temperature
is not exceed.
If the inlet temperature exceeds the setpoint, the icon
on the digital display indicates that the heating
power is switched off.
Unit provides no output
MAINTENANCE & CLEANING
General cleaning
• Plastic surfaces and fittings should only be wiped with a damp cloth. Do not use
abrasive or chlorine-based cleaning agents or solvents.
• For a good water supply, the outlet fittings (special tap aerators and shower heads)
should be unscrewed and cleaned at regular intervals. Periodically, the electrical
and plumbing components should be inspected by an authorised professional in
order to ensure proper functioning and operational safety at all times.
Purging after maintenance work
This instantaneous water heater features an automatic air bubble protection system to
prevent it from inadvertently running dry. Nevertheless, the appliance must be purged
of air before using it for the first time. Each time the appliance is emptied (e.g. after
work on the plumbing system, if there is a risk of frost or following repair work), the
appliance must be re-purged before it is used again.
• Disconnect the instantaneous water heater from the mains power supply.
• Unscrew the jet regulator on the outlet fitting and open the cold water tap valve to
flush out the water pipe and avoid contaminating the appliance or the jet regulator.
• Open and close the hot water tap until no more air emerges from the pipe and all air
has been eliminated from the water heater.
• Only then should you re-connect the power supply again to the instantaneous water
heater and screw the jet regulator back in.
• The appliance activates the heater after approx. 10 seconds of continuous water
This instantaneous water heater was manufactured, thoroughly inspected & tested
before delivery. Use the following fault finding information to diagnose the fault or seek
remedial action.
• Repairs should only be carried out by competent persons familiar with electric
instantaneous water heaters.
• All service work should be performed by an authorized Zip service engineer – for
details of the full range of services available call Zip on 0345 6 005 005.
• When calling for service, please always specify the appliance model and serial
number.
ProblemCauseSolution
Water stays cold, digital
display does not light up
Water stays cold, digital
display does light up
Display flashes error
message “Er“
Poor hot water flow rate
Selected temperature not
achieved, “MAX“ lights up
Selected temperature not
achieved “MAX” does not
light
Switch fuse off and on. If
“Er“ still flashes contact Zip
service
Clean shower head or tap
nozzle
Contact Zip Service to clean
fine filter
Reduce water flow rate at the
outlet
Set for required temperature
and tap hot water only
Reduce inlet temperature
Contact Zip Service to
connect display lead correctly
If the connection cable is damaged, it must be replaced with an original spare cable
from the manufacturer by an authorised technician in order to avoid any hazards.
If you cannot rectify the fault with the aid of the troubleshooting table, please contact
custo mer service.
The use of this crossed out wheeled bin logo
indicates that this product needs to be disposed of
separately to any other household waste.
Within each of the European Union member
countries, provisions have been made for the
collection and recycling of unwanted electrical and
electronic equipment.
In order to preserve our environment we ask that you
dispose of this product correctly. Please contact Zip
Customer Service for advice on 0345 6 005 005.
WARRANTY
The Zip appliance you have chosen is precision-built from the finest materials available
and should give many years of trouble free service.
Certain warranties may be implied by law into your contract with Zip. The warranty
provided below is additional to these implied warranties and nothing set out below shall
limit your statutory rights or rights at law.
Zip Water UK warrants that, should any part fail within 12 calendar months of
installation, that part will be repaired or replaced free of charge by Zip or its Distributor
or Service Provider, except as set out below, provided the appliance is installed and
used strictly in accordance with the instructions supplied, and that failure is not due to
accident, misuse, abuse, unsuitable water conditions, or to any alteration, modification
or repair by any party not expressly nominated by Zip.
No costs are payable by the customer other than any mileage or travelling-time
charges incurred by a Zip Service Provider or the cost of removal, cartage and
re-installation of any component of the appliance if it needs to be returned for repair to
Zip or its Distributor.
This warranty does not cover damage resulting from non-operation of the appliance or
consequential damage to any other goods, furnishings or property.
Zip does not exclude, restrict or modify any liability that cannot be excluded, restricted
or modified or which cannot, except to a limited extent, be excluded, restricted or
modified as between the owner or user and Zip under the laws applicable.
Furthermore, this warranty does not displace any statutory warranty, but, to the extent
to which Zip is entitled to do so, the liability of Zip under any statutory warranty will
be limited at Zip’s option to the replacement of the appliance or supply of equivalent
appliance, the payment of the cost of replacing the appliance or acquiring an equivalent
appliance, or the payment of the cost of having the appliance repaired or the repair of
the appliance.
Note It is our policy to continually improve products and as such we reserve the right to
alter data, specifications and component parts without prior notice.
To ensure you have the latest revision of this instruction manual, please visit
www.zipwater.co.uk to download the latest copy.
IMPORTANT
No liability is accepted for incorrect use of this product.