Electronically controlled instantaneous water heater
CEX -U: 27921 - 50 °C and 27920 - 60 °C models
Installation instructions
For 50 ºC models, the appliance delivers water not exceeding 50 ºC in accordance with AS3498.
1. Overview
When ordering spare parts, please always specify the appliance model and serial number.
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9
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6
5
10
4
11
3
2
1
Pos. Part.-No. Description
1 Grommet
2 Connection terminal
3 801110 Flow sensor
4 801101 Non-return valve
5 8 01111 PCB CE X / C FX
6 801112 CEX-U control panel
7 Inlet pipe
8 CEX-U cover
12
13
Pos. Art.-No. Description
9 Connection piece 1/2“
10 Thermal sensor set
11 Heating element
12 Bottom part
13 801113 Screws and dowels
Parts in Bold Type are available as Spare Parts.
Other parts are available on request.
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Contents
1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Environment and recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5. Typical installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Installation site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Mounting the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Installing the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7. Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Structural prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8. Initial operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Note “Selection of power rating“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Note “Reinstallation“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Lock level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
9. Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2. Environment and recycling
This symbol on the products and / or accompanying documents means that used electrical and electronic products should not be mixed with general household waste. For proper treatment, recovery and recycling, please take
these products to designated collection points. Alternatively, in some countries you may be able to return your
products to your local retailer upon the purchase of an equivalent new product. Disposing of this product correctly
will help to save valuable resources and prevent any potential negative effects on human health and the environment which could otherwise arise from inappro priate waste handling. Please contact your local authority for further details of your nearest designated collection
point. Penalties may be applicable for incorrect disposal of this waste, in accordance with national legislation. If you are a business user
and you wish to discard electrical and electronic equipment, please contact your dealer or supplier for further information. This symbol is
only valid in the European Union.
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3. Safety instructions
Installation, initial operation and maintenance of this appliance must only be conducted by an authorised professional, who will then be
responsible for adherence to applicable standards and installation regulations. We assume no liability for any damages caused by failure
to observe these instructions.
• Do not use the appliance until it has been correctly installed and unless it is in perfect working order.
• The appliance is suitable but not limited to domestic use and similar applications inside closed, frost-free rooms, and must only be
used to heat potable water from mains supply.
• The appliance must never be exposed to frost.
• The appliance must be earthed at all times.
• The minimal specific water resistance must not fall below the value stated on the label.
• The maximum water pressure must not exceed the value on the label.
• Before commissioning for the first time and 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 vented correctly in accordance with the instructions in this manual.
• 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.
• 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.
• Water inlet temperature must not exceed 70 °C.
• In case of malfunction, disconnect the fuses immediately. In case of leaks, cut off the cold water supply instantly. Repairs must only be
carried out by the customer service department or an authorised professional.
• 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. Children should be supervised in order to make sure that they do not play with the appliance.
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4. Technical specifications
Model
Part no.
Rated capacity / rated current
Chosen capacity @ 400 V
Electrical connection
Min. required cable size
3)
Hot water (l /min) max. at t = 25 K
Rated volume
Type
Heating system
Required spec. water
resistance @ 15 °C
Spec. electrical conductivity
Inlet temperature
Flow rate to switch on – max. flow rate
Pressure loss
Temperature range
Water connection
Weight
(when filled w. water)
VDE class of protection
CEX-U
27921 - 50 °C models
27920 - 60 °C models
11..13,5 kW (16..19,5 A)
11 kW (16 A) 13,5 kW (19,5 A)
3/PE 380..415 V AC
See note 3)
4,8 5,8
1)
0,3 l
Pressure type 1000kPa (10 bar)
bare wire heating system IES
®
≥ 1000 Ωcm
≤ 100 mS/m
≤ 70 °C
2,0 – 5,0 l/min
2)
20kPa (0,2 bar) at 2,5 l/min
130kPa (1,3) bar at 9,0 l/min
20 °C – 50 °C (50 °C models)
20 °C – 60 °C (60 °C models)
G 1/2“
2,7 kg
I
Type of protection / safety
1) Flow rate limited to achieve optimum temperature rise
2) Without flow regulator
3) The cross sectional area of the connection cable must be in accordance with the power rating of the appliance and the specific requirements
of AS/NZS 3000.
IP24
WMKA30016
AS 3498
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5. Typical installations
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5. Typical installations
Example of an open-outlet installation with special tap:
100
G1/2
294
Shorten cable
if necessary
upper edge of the unit approx. 600
dimensions in mm
Example of a closed-outlet installation:
depth
177 ≥70
108
75
angle valve approx. 550
upper edge of the sink approx. 850
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6. Installation
The following regulations must be observed:
• Installation must comply with all statutory regulations, AS/NZS 3000, AS/NZS 3500, as well as those of the local electricity and water
supply companies.
• The specifications on the rating plate.
• Technical specifications.
• 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 1800 638 633.
• Zip Instantaneous Hot Water heaters must be installed by a competent person familiar with electric instantaneous water heaters.
• Zip Instantaneous Hot Water heaters must be installed according to the specifi cation on the rating plate and the technical specifi cations.
• The appliance must be permanently connected to the electrical supply through an isolation switch as per AS/NZS 3000.
• To protect the appliance, a circuit breaker must be fi tted with a rating suitable for the nominal current of the appliance.
• The cross sectional area of the connection cable must be in accordance with the power rating of the appliance and the specifi c requirements of AS/NZS 3000.
• 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.
• This appliance must be earthed.
• For 50 ºC models, the appliance delivers water not exceeding 50 ºC in accordance with AS3498.
• For 60 ºC models, the appliance may be able to be used with a Thermostatic Mixing valve or where serving a fi xture that does not
require temperature limitation such as a commercial Kitchen sink or Cleaners sink. Refer to AS/NZS 3500.4..
Installation site
• Appliance must only be installed in frost-free rooms. Never expose appliance to frost.
• The Appliance is designed for wall mounted installation and has to be installed with water connectors upwards.
• The appliance complies with protection class 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.
• The hot water pipes must be thermally insulated.
• The specific resistance of the water must be at least 1100 cm at 15 °C. The specific resistance can be asked for with your water
supply company.
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6. Installation
Mounting the appliance
1. Thoroughly rinse the water supply pipes before installation to
remove soiling from the pipes.
2. 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 hood (see bottom figure).
3. Connect the top and bottom marks vertically with each other
(A–A).
4. Connect the right and left marks horizontally with each other
(B–B).
5. The intersections of these lines are the drill points.
6. Drill the holes using a 6 mm drill. Insert the included dowels and
screws. The screws have to protrude 5 mm.
7. Hang up the appliance into the rear hanging openings and slide it
downwards until it clicks into place.
Installing the appliance
1. Attach the water connection pipes to the appliance’s water connection. Use ½“ seal.
2. 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.
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Fig.1 Wiring diagram
3
12
4
1 Electronic board
2 Heating element
3 Safety pressure switch and Safety
thermal cut-out
4 Terminal block
7. Electrical connection
• The electrical installation should comply with current regulations, AS/NZS 3000 and any
Local Authority requirements.
• The appliance must be installed according to the specifi cation on the rating plate and
the technical specifi cations.
• The appliance must be earthed.
• The appliance must be permanently connected to the electrical supply through an
isolation switch.
• The cross sectional area of the connection cable must be in accordance with the power
rating of the appliance, the specifi c requirements of the installation site as per AS/NZS
3000.
• 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 fi tted with a rating suitable for the
nominal current of the appliance.
Electrical connection (only by a qualified tradesperson)
Chek 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.2.
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 in
Fig.1. Ensure all connections are fully tightened and secure.
5. Re-fit the appliance cover taking care not to trap the cable from the display panel and
secure the cover with the fixing screw shown in Fig.3.
Fig.2
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Fig.3
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8. Initial operation
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
Fig.4
®
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 (STCO) did not trip during transportation. To do this
open the cover and, if necessary, re-set the STCO by pushing the switch in. (see
Fig.4)
Note: Power Rating Selection
The maximum power rating of the appliance can be selected as either 13.5kW
or 11kW 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 qualifi ed tradesperson.
Multiple Power System:
The rated capacity (max. power consumption) is 13.5kW / 415V and can be reduced
to 11kW.
1. Switch on the power supply to the appliance. The digital display will light up.
2. When switching on power for the fi rst time “11” will fl ash on the display. 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 “11” for 11kW at 415V or display “13” for 13.5kW at 415V.
4. Press program key 1 to confi 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 fl ow.
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.
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8. Initial operation
Note “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.5.
This will reset all heater parameters to factory settings.
Value “88” will fl ash in the display panel until the maximum power rating has been selected.
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Fig.5
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8. Initial operation
Lock level
The operating mode of the appliance can be restricted. Refer to instructions under “Service Menu“ to set the lock level.
This should only be done by a qualified tradesperson.
Activation of the Lock level:
1. Disconnect the power supply to the unit.
2. Move the jumper on the main PCB from pin 2 to pin 1 (see figure 6).
3. Reconnect the power supply to the unit.
Deactivation of the Lock level:
1. Disconnect the power supply to the unit.
2. Move jumper from pin 1 to pin 2.
3. Reconnect the power supply to the unit.
Fig.6
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Service-Menü ansehen Service menu
1
+
Press
2 sec
4
9. Service menu
The service menu offers an overview of system parameters and is used for
diagnostics.
Press key
2
service menu, the display confirms by “FL” and by a flashing point. Using the
arrow keys
Press key
shes in the display. (The values of some menus can be switched over by using
the arrow keys
3
pressing key
(nominal value). After two minutes without any key stroke the system automatically switches back to the standard display.
and key simultaneously for at least 2 seconds to call up the
and , you can switch between the individual menus.
to see the value of the currently selected menu. The value fla-
and .) You will get back to the drop-down-menu when
again. With key you will get back to the standard display
5
Display flashes
9
Menu item order of “Service menu“:
6
8
Flow
Power
Temp in
Individual menu items as follows:
“FL“: Flow
Indication of current flow rate given
in l/min.
7
“Po“: Power
Indication of current power consumption (kW).
“t1“: Temp in
Indication of inlet temperature (°C).
“t2“: Temp out
Indication of outlet temperature (°C).
“CA“: Control value
Indication of calibration value of the
control system. Regular range: 40 – 60.
“PL“: Power limit
Informs about the current maximum power rating (kW) of the appliance.
Temp out
Control value
Power limit
Diagnostics
Lock level
Software version
Radio channel
Received strength
Signal
“Er“: Diagnostics
Indication of the last ten diagnostic
messages.
The error code is indicated by the first displayed value after pressing key
(refer to “Abstract for Trouble-Shooting & Diagnostics” in the hood). By using
the arrow keys
and the last 10 error codes are displayed chronologically. Thereby the display indicates in turns 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” factory reset via key (countdown) not possible, parameters can be
seen, but not be modified in setup menu
“2” same as “1”, additionally the setup menu cannot be opened
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9. Service menu
Menu item order of “Service menu“:
Flow
Power
Temp in
Temp out
Control value
Power limit
Diagnostics
Lock level
Software version
Radio channel
“3” same as “2” additionally nominal value memory 1 and 2 not changeable
“4” same as “3”, additionally nominal value not changeable
Note: When the setting “1“, “2“, “3“ or “4“ was chosen, the system parameters can no longer
be modified in the service menu.
In order to modify these system parameters, it is necessary to remove the jumper on the
power electronics, as specified in the chapter “Deactivation of the lock level”. (Page 13)
“nr“: Software version
Information about installed software version.
“Ch“: Radio channel
Information about the current radio channel of the water heater and its remote control.
“rS“: Received strength
Information about the current signal quality of the remote control as percentage. Depending
on the distance between remote control and water heater the value varies between 10 % and
100 %.
“IIC“: Signal
Information about the quality of the radio contact when a diagnostic display is connected.
Received strength
Signal
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Head Office
Zip Heaters (Aust) Pty. Ltd.
ABN: 46 000 578 727
67 Allingham Street
Condell Park NSW 2200
Postal: Locked Bag 80
Bankstown 1885 Australia
Website: www.zipheaters.com
Facsimile: (02) 9796 3858
programme button 1
Telephone: (02) 9796 3100
Free Call: 1 800 638 633
As Zip policy is one of continuous
product improvement, changes
to specifications may be made
without prior notice. Images in this
booklet have been modified and
may not be true representations of
the finished goods.
Quick reference guide
MADE IN GERMANY
12. Quick reference guide
arrow key up
programme button 2
Set temperature
1
–1 °C
Convenience zone 35,0.. 42,0 °C
1
–0,5 °C
Select preset temperature
A1 A2
B1 B2
+1 °C
+0,5 °C
1
Press + hold!
Unit provides no output
+
Power limit
Reset
arrow key down
Enter service menu
1
2
+
Press
2 sec
4
5
2
Display flashes
3
9
3
6
8
7
Store temperature
1
4 3
Display of new value (e.g. 43 °C)
Set required
temperature
(e.g. 43 °C)
2
Press
3 sec
Reset completed
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