Zip InLine CEX-O Mounting instructions

Zip InLine
Electronically Controlled Instantaneous
Water Heaters
Models: CEX-O & CEX-U
Issued April 2014
Installation, Maintenance and User Instructions
Please read these instructions carefully before commencing installation of the InLine water heater.
Please leave these instructions with the end user after installation.
Zip Heaters (UK) Ltd
14 Bertie Ward Way
Dereham
Norfolk
NR19 1TE
Telephone: [phone]
Fax: [phone]
Web: www.zipheaters.co.uk
The terms ‘Zip’ and ‘InLine’
are registered trademarks
9120-2546 April 2014 V1.02

Please read these instructions carefully before commencing installation of the InLine
Electronic Instantaneous Water Heater.
Please leave these instructions with the end user after installation.
To ensure you have the latest revision of this instruction manual, please visit www.zipheaters.co.uk
to download the latest copy.
In order to preserve our environment we ask that you dispose of this product correctly.
Please contact Zip Customer Service for advice on 0845 6 005 005.
Contents
Description 1
Approvals 1
Safety information 2
WARNING 2
CAUTION 3
Technical data 4
Dimensions 5
Spare Parts 5
Installation 6
Requirements 6
Installation site 6
Installing the appliance 7
Electrical connection / Wiring diagram 8
Commissioning 9
Service menu 11
Operation 13
Maintenance and cleaning 15
Fault nding 16
Warranty 17

March / 2014 Page 1 CEX-O_CEX-U_Installation, Maintenance and User Instructions V1.02
Description
Zip InLine CEX-O and CEX-U instantaneous water heaters are micro-processor controlled,
pressure resistant water heaters suitable for supplying hot water to one or more outlets.
The heating element switches on automatically when the hot water tap is opened and
switches off automatically when the hot water tap is closed.
The electronic control system automatically regulates the power consumption depending on
the supply water temperature and ow rate to achieve the required outlet temperature within
the power limit of the appliance.
Power consumption is also regulated based on outlet temperature to ensure the required
temperature is achieved exactly to the degree and irrespective of uctuations in voltage
and water pressure.
The power rating of the appliance can be selected as either 8.8kW or 6.6kW at 230V at the
time of installation.
The required outlet temperature can be entered on a keypad within the range 30°C to 55°C
and can be read off the digital display.
The maximum inlet temperature of 70°C is suitable for use with preheated water e.g. from
solar heating systems.
Approvals
Zip InLine CEX-O and CEX-U are VDE approved to the LVD and EMC directives and are CE
endorsed.
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.

CEX-O_CEX-U, Maintenance and User Instructions V1.02 Page 2 March / 2014
Safety Information
WARNING
• 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.
• The front cover of the appliance must never be opened before disconnecting the
appliance from the mains power supply.
• To protect the appliance, a circuit breaker or fuse must be tted with a rating suitable for the
nominal current of the appliance.
• The appliance must be permanently connected to the supply through an isolating switch with
a contact separation of at least 3mm in all poles and be protected by a suitably rated RCD.
• The cross sectional area of the connection cable must be appropriate for the power rating and
location of the appliance. See Technical Data.
• The connecting cable must be adequately secured.
• This appliance must be earthed at all times.
• Check that the power supply is switched off prior to electrical connection.
• The appliance, its wiring and piping must not be modied in any way.
• In case of malfunction isolate the power supply immediately. In case of leaks also isolate the
water supply. Repairs must only be carried out by Zip Heaters (UK) Ltd or an authorised Zip
service engineer.
• Temperatures in excess of approximately 43°C are perceived as hot, especially by children,
and may cause a feeling of burning.
• This appliance must not be used by any person (including children) with limited physical,
sensorial or mental abilities or failing experience and/or knowledge unless they are
supervised by a person responsible for their safety or received instructions about how to use
the appliance.
• When the appliance has been in use for some time, the ttings may be very hot.
• 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.
WARNING: Situations that could cause injury to yourself or others.
CAUTION: Situations that could cause damage to your appliance or other equipment.
NOTE: Notes, usage tips or additional information.
IMPORTANT:
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.

March / 2014 Page 3 CEX-O_CEX-U_Installation, Maintenance and User Instructions V1.02
• Children should be supervised in order to make sure that they do not play with the appliance.
• CAUTION
• Optimum operation is ensured at a water ow 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-0 and CEX-U range is not intended for use with thermostatic mixing valves or taps.
• The appliance must be completely lled with water before being switched on.
• Before commissioning for the rst time and each time the appliance is emptied (e.g. due to
work on the plumbing system or maintenance), the appliance must be vented 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 potable water. The specic 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 70°C.
• The Zip InLine is intended for mains supply only. In any other case please contact Zip on
0845 6 005 005 for advice.
• Zip Heaters (UK) Ltd cannot be held liable for any damages caused by failure to
observe these instructions.

CEX-O_CEX-U, Maintenance and User Instructions V1.02 Page 4 March / 2014
Model CEX-O CEX-U
Application Over-sink Under-sink
Nominal supply voltage 1/N/PE 230V~
Power Rating (kW) 6.6 / 8.8(1)
Rated Current (A) 29 (6.6kW) / 38 (8.8kW)
Element type Bare wire
Rated pressure 1 MPa (10 bar)
Temperature adjustment range 30oC - 55oC
Maximum inlet temperature 70oC
Factory set ow rate at 3 bar (l/min) 4.2
Minimum ow rate (l/min) 2.0
Maximum ow rate (l/min) 5.0
Flow rate @ 38oC (l/min)(2) 3.6 (6.6kW) / 4.8 (8.8kW)
Flow rate @ 50oC (l/min)(2) 2.5 (6.6kW) / 3.3 (8.8kW)
Pressure loss @ 2.5 l/min 0.2 bar
@ 9.0 l/min 1.3 bar(3)
Required specic water resistance @ 15oC >1100 ohm.cm
Dimensions H x W x D (mm) 294 x 177 x 108
Maximum weight (kg) 2.7
Rated volume (litres) 0.3
Water connections (BSP) 1/2”
Protection class IP25 IP24
(1) Power rating selected at time of installation.
(2) At 12oC incoming water temperature.
(3) Without ow regulator
All data quoted at nominal supply voltage . Standard European voltage tolerances of -6%
to +10% may be applied.
A minimum water presure of 0.2 MPa (2 bar) is recommended for optimum
performance.
Maximum ow rate will be achieved at a water pressure of 0.6 MPa (6 bar).
The appliance must not be subject to more than 1 MPa (10 bar).
Technical data

March / 2014 Page 5 CEX-O_CEX-U_Installation, Maintenance and User Instructions V1.02
Dimensions
Spare Parts
When ordering spare parts, please always specifythe appliance model and serial number.
IN89589 CEX-U
IN89588 CEX-O
Front Cover
IN82813
½” Water
Connection
IN82512
Temperature
Sensor Set
IN82810
Heating Element
c/w STDB
IN82802
Inlet Pipe
IN82812 CEX-U
IN82816 CEX-O
Control Panel
IN82811
Main PCB
IN82246
Non-return
Valve
IN82819
Flow Sensor
IN86250
Terminal
Block
IN82806
Grommet
37
108

CEX-O_CEX-U, Maintenance and User Instructions V1.02 Page 6 March / 2014
Installation
Requirements
• These instructions must be read and fully understood before commencing the installation. If in
doubt, or in need of further guidance please ring Zip on 0845 6 005 005.
• Zip InLine water heaters must be installed by a competent person familiar with electric instanta-
neous water heaters.
• Installations must comply fully with UK Water Regulations and any Local Authority requirements.
• The electrical installation including earthing and cross bonding should comply with current IEE
regulations and any Local Authority requirements.
• Zip InLine water heaters must be installed according to the specication on the rating plate and
the technical specications.
• To protect the appliance, a circuit breaker or fuse must be tted with a rating suitable for the
nominal current of the appliance. (See Technical Data Section on page. 4).
• The appliance must be permanently connected to the supply through an isolating switch with a
contact separation of at least 3mm in all poles and be protected by a suitably rated RCD.
• The cross sectional area of the connection cable must be in accordance with the power rating of
the appliance and the specic requirements of the installation site up to a maximum cable size
of 10mm2.
• Take care to protect the wiring from damage during installation and ensure that the wiring is not
directly accessible after installation.
• Check that the power supply is switched off prior to electrical connection.
Installation site
• The installation site must be free from frost at all times.
• The appliance is designed for wall mounted installation. CEX-O for over-sink installation must
be installed with the water connections downward. CEX-U for under-sink installation must be
installed with the water connections upward.
• The appliance complies with protection class IP25 for over-sink installation, protection class
IP24 for under-sink installation and may therefore be installed in protection zone 1.
• In order to minimise thermal losses, the distance between the appliance and the outlet tting
should be as short as possible. Recommended maximum distance 2 metres.
• For maintenance work a shut off valve should be installed in the water supply line to the heater.
• 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 Heaters (UK) Ltd on 0845 6 005 005.
• Hot and cold water connecting pipes should be WRAS approved and of copper or steel con-
struction. Plastic pipes may only be used if conforming to DIN 16893 Series 2. The hot water
pipes must be thermally insulated.
• The specic resistance of the supply water must be at least 1100Ωcm at 15°C. The specic
resistance can be checked with the local water supply company.

March / 2014 Page 7 CEX-O_CEX-U_Installation, Maintenance and User Instructions V1.02
Installing the appliance
1. Thoroughly ush the water supply pipes
before installation to remove any water
borne debris.
2. Hold the appliance on the wall and mark
the drill lines at top and bottom, left and
right, corresponding to the small notches at
the edge of the front cover (see Fig 1).
3. Join the top and bottom marks vertically
(A-A) and the left and right marks
horizontally (B-B). The intersections of
these lines are the drill points (see Fig 2).
4. Drill the holes using a 6mm drill then
insert the dowels and screws provided
leaving the screws protruding 5mm from
the wall.
5. Hang the appliance with the screws
engaging in the key-hole slots in the
back plate until it clicks into place
(see Fig 3).
6. Attach the water connecting pipes to the
appliance water connections using ½”
seals.
7. Ensure that all air is eliminated from the
water heater by opening and closing the
hot water tap until all air has been
eliminated from the water heater and no
more air emerges.
140
263
179
Fig. 1
Fig. 3
Fig. 2

CEX-O_CEX-U, Maintenance and User Instructions V1.02 Page 8 March / 2014
Electrical connection
The electrical installation including earthing and cross
bonding should comply with current IEE regulations and
any Local Authority requirements.
The appliance must be installed according to the
specication on the rating plate and the technical
specications.
The appliance must be earthed.
The appliance must be permanently connected to the
electrical supply through an isolation switch having a
contact separation of at least 3mm on all poles.
The cross sectional area of the connection cable
must be in accordance with the power rating of the
appliance and the specic requirements of the
installation site up to a maximum cable size of 10mm2.
Take care to protect the wiring from damage during
installation and ensure that any uninsulated wiring is not
directly accessible after installation.
To protect the appliance, a circuit breaker must be
tted with a rating suitable for the nominal current of
the appliance.
Check that the power supply is switched off prior to
electrical connection!
1. With the appliance cover removed insert the power
cable through the water splash protection grommet
in the backplate. The splash protection grommet
must be used and free from damage.
2. Remove inner and outer insulation from the
connecting cable to the lengths shown in Fig 4.
3. Secure the cable using the cord grip. The cord grip
must be used.
4. Fit the connecting cables into the terminal block
according to the wiring diagram above. Ensure all
connections are fully tightened and secure.
5. Re-t the appliance cover taking care not to trap
the cable from the display panel and secure the
cover with the xing screw (see Fig 5).
110
90
8
71~76
8
Wiring Diagram
1. Circuit board
2. Heating element
3. Safety pressure switch and
safety thermal cut-out
4. Terminal block
Fig. 4
Fig. 5
1 3
4
2

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 rst 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 rst time “88” will ash 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 conrm 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 ow.
Fig. 7

CEX-O_CEX-U, Maintenance and User Instructions V1.02 Page 10 March / 2014
Reinstallation
If the appliance is to be re-commissioned
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 to short circuit the two pins as
shown in Fig.8.
This will reset all heaterparameters to factory
settings.
Value “88” will ash in the display panel until
the maximum power rating has been selected.
Lock level
Operation of the appliance can be restricted.
Refer to instructions under “Service Menu” to
set the lock level.
This should only be done by a competent
installer.
Activation of the Lock level:
1. Set the required lock level in the service
menu (refer to instructions under “Service
Menu”).
2. Disconnect the power supply to the unit.
3. Move the jumper on the main PCB from pin
2 to pin 1 (see Fig 9).
4. Reconnect the power supply to the unit.
Deactivation of the Lock level:
1. Disconnect the power supply to the unit.
2. Move the jumper on the main PCB from pin
1 to pin 2.
3. Reconnect the power supply to the unit.
Fig. 8
Fig. 9
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

March / 2014 Page 11 CEX-O_CEX-U_Installation, Maintenance and User Instructions V1.02
Service menu
The service menu can be used for diagnostics
and to view and congure appliance settings.
Press program keys 1 and 2 simultaneously for
at least 2 seconds to enter the service menu
conrmed by the display “FL” and ashing point
(see Fig 10).
Scroll between menu items in the service menu
using the arrow up and arrow down keys.
Press program key 1 to display the value of the
currently selected menu item. The value ashes
in the display.
The values of some menu items can be dislayed
by using the arrow up and arrow down keys.
Press program key 1 to return to the menu item list.
Press program key 2 to exit the service menu and
return to the standard display.
After two minutes without any key stroke the
system automatically returns to the standard
display.
Menu item order of Service Menu:
Flow: Flow rate (l/min)
Power: Power consumption (kW)
Temp in: Inlet temperature (°C)
Temp out: Outlet temperature (°C)
Control value: Calibration value of the control system (40 - 60)
Power limit: Maximum power setting (kW)
Diagnostics: Last ten diagnostic messages (see below)
Lock level: Current lock level setting (see below)
Software version: Installed software version
Radio channel: Radio channel of heater and remote control
Received strength: Signal quality of remote control (10% - 100%)
Signal: Quality of radio contact with diagnostic display
v
v
Press >2 secs
Display Flashes
12
4
5
78
9
3
6
Fig. 10

CEX-O_CEX-U, Maintenance and User Instructions V1.02 Page 12 March / 2014
“Er”: Diagnostics
The last ten diagnostic messages can be displayed.
Pressing program key 1 displays the current error code. A key explaining the
error codes can be found inside the front cover of the appliance.
The arrow up and arrow down keys can be used to view the last ten
error codes displayed in chronological order from “0” to “9” alongside the
corresponding error code with “0” being the most recent.
“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 viewed but not
modied in service 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
modied 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”.

March / 2014 Page 13 CEX-O_CEX-U_Installation, Maintenance and User Instructions V1.02
Operation
The appliance switches on automatically when
the hot water tap is opened and switches off
automatically when the hot water tap is closed.
Temperature setting
The required outlet temperature can be
adjusted gradually to a higher or lower value
with the up arrow and down arrow keys.
Pressing a key once briey 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.
The required outlet temperature can be
adjusted between 30°C and 55°C.
Note: reducing the temperature below 30°C
displays “- -” and the heating function will not
operate.
Program buttons
The two program keys allow a preset
temperature to be selected quickly.
The factory setting is 35°C for program 1 and
48°C for program 2.
The preset temperature can be changed to the
current temperature setting by prolonged
pressing of the program key.
The display changes from “P1” or “P2” to the
new temperature value which becomes
available each time the corresponding program
key is pressed.
Set temperature
-1°C +1°C
35.0 - 42.0°C
-0.5°C +0.5°C
A1 A2
B1 B2
Select preset temperature
Store temperatures
2
3
4
1
Set required
temperature
Press >3
seconds

CEX-O_CEX-U, Maintenance and User Instructions V1.02 Page 14 March / 2014
Temperature limitation
Units are supplied with the temperature
limitation function deactivated.
To activate, select the limit temperature then
press the program 1 and up arrow function
keys simultaneously for at least 3 seconds.
“HI” is displayed briey to conrm activation.
To deactivate, press the program 1 and down
arrow function keys simultaneously for at least
3 seconds.
“- -“ is displayed briey to conrm
deactivation. Note: Programmed temperature
settings may need to be reset after
deactivating temperature limitation.
Reset to factory setting
To reset to factory settings press the up arrow
and down arrow function keys simultaneously.
The display will count backwards from “10” to
“00” in one second intervals.
The appliance is reset when the counter
reaches “00”.
Releasing the function keys earlier will cancel
the process.
Temperature limitation on
3
12
Press >3
seconds
Conrms
activation
+
Temperature limitation off
12
Press >3 seconds Conrms
deactivation
+
Reset to factory setting
2
3
1
Press + hold
Reset complete
+
Energy saving
Set the required hot water temperature on the
appliance.
If the water is too hot reduce the temperature on the appliance instead of mixing with cold
water.
Any cold water added is not controlled by the electronic circuitry meaning that precise temperature
control can no longer be guaranteed.
Note! Adding cold water wastes the energy used to heat the water. This unit is not
intended for use with thermostatic mixing valves or taps.

March / 2014 Page 15 CEX-O_CEX-U_Installation, Maintenance and User Instructions V1.02
Power limit
If the maximum power available from the appliance is
insufcient to heat the volume of hot water being drawn off
to the required temperature this will be indicated by “MAX”
on the display.
Reducing the ow rate will enable the required
temperature to be delivered.
Operation with solar systems
The appliance is suitable for use with solar heating systems
providing appropriate controls are in place to ensure that
the temperature of the water entering the unit does not
exceed 70ºC.
If the inlet temperature exceeds the set point, the “SUN”
symbol on the display indicates that the
heating power is switched off.
Maintenance and cleaning.
General cleaning
Do not use strong, corrosive spray or abrasive cleaners / chemicals.
Clean the casing, tapware, external lter, piping and all other ttings with a soft cloth and mild
soap and water.
Do not spray water over the tap as it may damage the low-voltage electronics.
Caution: Should any of the plastic ttings accidentally come into contact with cleaners with a PH
level less than 4, hypochlorite, hydrogen peroxide or any other aggressive chemical the affected
component must be replaced immediately.
Undersink units must never be located near, or cleaned with water jets. Avoid using airborne
pesticides near the undersink unit.
NOTE!
Maintenance work must only be carried out by a competent person familiar with instantaneous
water heaters.
Outlet ttings (jet regulator Fig. 5) should be unscrewed from the tap nozzle and cleaned at
regular intervals.
• Rinse the regulator with water and brush off the debris. For difcult to remove deposits,
soak in white vinegar (or a proprietary scale cleaner) for a few minutes and scrub with a
toothbrush.

CEX-O_CEX-U, Maintenance and User Instructions V1.02 Page 16 March / 2014
Fault nding
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 Service on 0845 6 005 005.
When calling for service, please always specify the appliance model and serial number.
The following table will be helpful in determining the causes of some common problems and
their solutions.
Problem Cause Solution
Water stays cold
Circuit breaker tripped Reset circuit breaker
STDB tripped Contact Zip Service to reset
STDB
Display ashes error message
‘ER’ Control system has switched off
Switch power supply off and on.
If ‘ER’ still ashes contact Zip
Service
Poor hot water ow rate
Outlet tting dirty or calcied Clean shower head or tap nozzle
Fine lter dirty or calcied Contact Zip Service to clean ne
lter
Selected temperature not
achieved ‘MAX’ lights up Excessive water ow rate Reduce water ow rate at the outlet
Selected temperature not
achieved ‘MAX’ does not light
Cold water has been added at
the outlet
Set for required
temperature and tap hot water
only
Symbol ‘SUN’ ashes Inlet temperature exceeding set
point Reduce inlet temperature
Water heats up but display fails
to operate
Display lead plug not properly
connected
Contact Zip Service to connect
display lead correctly
• If any parts are cracked or broken, replace them. If the washer has hardened, it should be
replaced.
• With the debris cleaned out, screw the regulator back into the tap.
Hand tightening should be adequate.
The electrical and plumbing components should be inspected regularly by a competent
person to ensure proper functioning and operational safety.
Water quality should be considered when determining the frequency of inspection.
Each time the appliance is emptied (e.g. due to work on the plumbing system, if there is a risk of
freezing or in case of 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.

March / 2014 Page 17 CEX-O_CEX-U_Installation, Maintenance and User Instructions V1.02
Warranty
The Zip appliance you have chosen is precision-built from the nest 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 Heaters (UK) Ltd 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, modication 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
modied or which cannot, except to a limited extent, be excluded, restricted or modied 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, specications and component parts without prior notice.
To ensure you have the latest revision of this instruction manual, please visit www.zipheaters.co.uk
to download the latest copy.
IMPORTANT: No liability is accepted for incorrect use of this product.
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 0845 6 005 005.