CL1507
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.
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Instructions for installer - 9120-25536 - CEX-U - 801045 - May 2013 v1.01
1. Overview
When ordering spare parts, please always specify the appliance model and serial number.
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
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.
1
2
3
4
5
6
7
8
9
10
11
12
13
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Instructions for installer - 9120-25536 - CEX-U - 801045 - May 2013 v1.01
This symbol on the products and / or accompanying documents means that used electrical and electronic prod-
ucts 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 other-
wise 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.
2. Environment and recycling
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
Contents
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Instructions for installer - 9120-25536 - CEX-U - 801045 - May 2013 v1.01
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 experi-
ence 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.
3. Safety instructions
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Instructions for installer - 9120-25536 - CEX-U - 801045 - May 2013 v1.01
Model
CEX-U
Part no.
27921 - 50 °C models
27920 - 60 °C models
Rated capacity / rated current
11..13,5 kW (16..19,5 A)
Chosen capacity @ 400 V
11 kW (16 A) 13,5 kW (19,5 A)
Electrical connection
3/PE 380..415 V AC
Min. required cable size
3)
See note 3)
Hot water (l /min) max. at t = 25 K
4,8 5,8
1)
Rated volume
0,3 l
Type
Pressure type 1000kPa (10 bar)
Heating system
bare wire heating system IES
®
Required spec. water
resistance @ 15 °C
Spec. electrical conductivity
≥ 1000 Ωcm
≤ 100 mS/m
Inlet temperature
≤ 70 °C
Flow rate to switch on – max. flow rate
2,0 – 5,0 l/min
2)
Pressure loss
20kPa (0,2 bar) at 2,5 l/min
130kPa (1,3) bar at 9,0 l/min
Temperature range
20 °C – 50 °C (50 °C models)
20 °C – 60 °C (60 °C models)
Water connection
G 1/2“
Weight
(when filled w. water)
2,7 kg
VDE class of protection
I
Type of protection / safety
IP24
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.
4. Technical specifications
WMKA30016
AS 3498
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