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Instructions for user - CEX9-U - 801041 - November 2018 v1.00 Art.no:

 9120-25688

3. Technical data

Model

CEX9-U

Part no.

27910 - 50 °C model

Energy efficiency class

A *

)

Rated capacity (Rated current)

6.0 / 9.6 kW (27.3 / 40 A)

Chosen capacity (Chosen current)

6.6 kW (28.7 A) 

8.8 kW (38.3 A) 

Electrical connection

1/N/PE  220..240 V AC

Min. required cable size 

3)

see note 1)

Hot water (l/min)
max. at ∆t = 25 K

3.8

5.0

Rated volume

0.3 l

Rated pressure

1.0 MPa (10 bar)

Connecting type

pressure resistant / pressureless

Heating system

Bare wire heating system IES®

Required spec. water
resistance @ 15 °C
Spec. electrical conductivity

≥ 1100 Ωcm

≤ 90.9 mS/m

Inlet temperature

≤ 70 °C

Flow rate to switch on – max. flow rate

2.0 – 5.0 l/min 

2)

Pressure loss

0.2 bar at 2.5 l/min       1.3 bar at 9.0 l/min 

3)

Temperature choice

20 °C – 50 °C

Water connection

G ½"

Weight (when filled w. water)

2.7 kg

VDE class of protection

I

Type of protection / safety

IP24

*) The declaration complies with the EU regulation No 812/2013
1) 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
2) Flow rate limited to achieve optimum temperature rise
3) Without flow regulator

Summary of Contents for 27910

Page 1: ...ntaneous Hot Water Electronically controlled instantaneous water heater CEX9 U 27910 50 C model Instructions for the user For 50 C models the appliance delivers water not exceeding 50 C in accordance with AS3498 ...

Page 2: ...echnical data 6 4 Dimensions 7 5 Description of the appliance 7 6 Operation 8 Temperature setting 8 Programme buttons 8 Reset to factory setting 9 How to save energy 9 ECO mode 9 Power limit 9 Top up heating 9 7 Maintenance work 10 Venting after maintenance work 10 Cleaning and maintenance 10 8 Troubleshooting and service 11 ...

Page 3: ...t 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 appliance is only suitable for domestic use and similar applications inside closed rooms and must only be used to heat incoming water from the mains supply The appliance must never be exposed to frost The values stated on the rating...

Page 4: ...No other fittings or appliances which decrease the water flow to the shower may be installed age by an authorised technician in order to avoid any hazards For appliances with direct connection an all pole disconnecting device with a contact opening width of 3mm per phase must be provided at the installation end according to Australian wiring rules AS NZ3000 The wall bracket must be secured with th...

Page 5: ...r parts are available on request Pos Part No Description 1 Grommet 2 Connecting terminal 3 99394 Flow sensor 4 99385 Non return valve 5 99398 PCB CEX9 6 99418 CEX control panel 7 Inlet pipe 8 CEX U cover Pos Part No Description 9 Inlet filter 10 Connection piece 1 2 11 Safety thermal cut out 12 99400 Thermal sensor set 13 Heating element incl SDB 14 Bottom part 15 99397 Screws and dowels 12 13 14 ...

Page 6: ...tem Bare wire heating system IES Required spec water resistance 15 C Spec electrical conductivity 1100 Ωcm 90 9 mS m Inlet temperature 70 C Flow rate to switch on max flow rate 2 0 5 0l min 2 Pressure loss 0 2bar at 2 5l min 1 3bar at 9 0l min 3 Temperature choice 20 C 50 C Water connection G Weight when filled w water 2 7kg VDE class of protection I Type of protection safety IP24 The declaration ...

Page 7: ...ntrol regulates the power consumption depending on the selected outlet temperature the respective inlet tempera ture and the flow rate thus reaching the set temperature exactly to the degree and keeping it constant in case of pressure fluctua tions The required outlet temperature can be entered on a keypad within a range between 20 C and 50 C and can be read off the digital display This appliance ...

Page 8: ...e appliance automatically switches off Set temperature 1 1 C 1 C Select preset temperature A1 A2 B1 B2 Store temperature 2 Press 3 sec Display of new value e g 43 C Set required temperature e g 43 C 4 3 1 Convenience zone 35 0 42 0 C 1 0 5 C 0 5 C The two programme buttons allow to quickly select the preset temperature When pressing a programme key the preset temperature is selected and displayed ...

Page 9: ...ge of the electronic cir cuitry with the result that temperature constancy is no longer guaranteed How to save energy 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 ECO mode ECO mode If the full output of the instantaneous water heater does not ...

Page 10: ...ertently running dry Nevertheless the appliance must be vented 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 vented before it is used again 1 Disconnect the instantaneous water heater from the mains e g via deactivating the fuses 2 Unscrew the jet regulator on...

Page 11: ...tal display does light up Safety thermal cut out tripped Contact customer service Display flashes error mes sage Er Control system has switched off Switch fuse off and on If Er still flashes contact cus tomer service Flow rate of hot water too weak Outlet fitting dirty or calcified Clean shower head jet regu lator or sieves Fine filter dirty or calcified Let clean fine filter by a spe cialist Sele...

Page 12: ... have been modified and may not be true representations of the finished goods 1 3 2 1 2 1 1 C 1 C A1 A2 B1 B2 2 4 3 1 1 0 5 C 0 5 C 3 1 2 2 8 4 7 5 3 6 9 1 Arrow key down Arrow key up Programme button 1 Programme button 2 Press hold Reset completed Press 3 sec Confirmation of deactivation Press 3 sec Display of new value e g 43 C Set required temperature e g 43 C Confirmation of activation Press 3...

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