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Venting After Maintenance Work

This instantaneous water heater features an automatic air bubble protection to 

prevent it from inadvertently 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 deactivat-

ing the fuses).

2.  Unscrew the jet regulator on the outlet fitting and open the cold water tap 

valve to rinse out the water pipe and avoid contaminating the appliance or the 

jet regulator.

3.  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.

4.  Only then should you re-connect the power supply again (e.g. via activating 

the fuses) to the instantaneous water heater and screw the jet regulator back 

in.

5.  The appliance activates the heater after approx. 10 seconds of continuous 

water 

flow. 

 

     

  

Cleaning and Maintenance

 

•  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 (e.g. jet regulators and shower heads) 

should be unscrewed and cleaned at regular intervals. Every three years, the electri-

cal and plumbing components should be inspected by an authorised professional in 

order to ensure proper functioning and operational safety at all times.   

WARNING

3. How To Use

This instantaneous water heater was manufactured conscientiously and checked 

several times before delivery. Should malfunctions nevertheless occur, it is usually only 

due to a bagatelle. First attempt to switch the house fuses off and on again in order to 

reset the electronics. Next, try to remedy the problem with reference to the following 

table. In doing so, you will avoid unnecessary expense of customer service assistance.

4. Troubleshooting and Service

Repairs must only be carried out 

by authorised professionals. If 

a fault in your appliance cannot 

be rectified with the aid of this 

table, please contact German 

Pool Customer Service & Repair 

Centre. Please have the details of 

the typeplate at hand.

WARNING!

DSN

Problem

Cause

Solution

Water stays cold

Master fuse tripped

Renew or activate fuse

Safety pressure cut-out  

tripped 

Contact customer service

Safety thermal cut-out 

tripped

Contact customer 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 calci-

fied

Let clean fine filter by cus-

tomer service

Selected tempera-

ture is not reached 

Cold water has been 

added via the tap

Tap hot water only; set tem-

perature, check outlet tem-

perature

Water perceived to 

be too cold

Set temperature too low

Increase set temperature by a 

specialist

Water perceived to 

be too hot

Set temperature too high

Decrease set temperature by 

a specialist

8

9

Summary of Contents for German Pool DBN

Page 1: ...structions and warranty information carefully before use and keep them handy for future reference Online Warranty Registration U S E R M A N U A L DBN Instantaneous Electric Water Heater WH DBN M 21 3...

Page 2: ...to frost The values stated on the rating plate must be observed In case of malfunction disconnect the fuses immediately In case of leaks cut off the mains water supply instantly Repairs must only be c...

Page 3: ...ocked and the water flow must not be restricted The water outlet facilities such as shower head jet control and other outlet unit must be decalcified regularly Deposits must be removed in regular inte...

Page 4: ...could happen that the preset outlet temperature is not reached which is due to the fact that the appliance exceeded its capacity The outlet temperature can be raised by reducing the water flow at the...

Page 5: ...ing components should be inspected by an authorised professional in order to ensure proper functioning and operational safety at all times WARNING 3 How To Use This instantaneous water heater was manu...

Page 6: ...m Inlet temperature 30 C Flow rate to switch on max flow rate 1 5l min 7 0 3 1 5l min 8 0 3 1 5l min 8 0 3 Pressure loss 0 08bar at 1 5l min 1 3bar at 9 0l min 4 Temperature range 30 60 C Water connec...

Page 7: ...water distribution company Dimensions in mm Based on Germany s guidelines a general test certificate concerning the evidence of applicability of noise behaviour is granted For installations under dif...

Page 8: ...ove in chapter Electrical connec tion 1 Place the appliance on the heater bracket so that the threaded rod of the wall bracket fits in the corresponding hole of the appliance If necessary slight cor r...

Page 9: ...shedding relay designed for electronic instantaneous water heaters Art no 82250 can be connected to phase conductor L2 To avoid possible jitter of the load shedding relay caused by low power consumpt...

Page 10: ...cannot be put into operation the temperature cut out or the pres sure cut out may have tripped during transport If necessary check that the power supply is switched off and reset the cut out 1 Switch...

Page 11: ...alve several times until air no longer emerges from the pipe 9 Fit the hood of the appliance Then switch on the power again e g via activating the fuses The cold water connection of this instantaneous...

Page 12: ...2 1 DBN 50 C 30 C 60 C 55 C 1 2 3 4 5 10 3 22 23...

Page 13: ...4 DBN PCB PCB 1 2 DBN 1 SDB 24 25...

Page 14: ...IES 15 1300 cm 77mS m 30 C 1 5l min 7 0 3 1 5l min 8 0 3 1 5l min 8 0 3 0 08bar at 1 5l min 1 3bar at 9 0l min 4 30 60 C G inch 4 2kg VDE I IP25 No 812 2013 18kW 3 400 26A A6 1 1 10 2 3 4 3 100 170 46...

Page 15: ...RDX3 36100 RDX IP25 IP24 VDX 34120 RDX UDX 34110 RDX 4 RDX3 VDX UDX 2 1 12 12 14 2 6 3 4 30 1 1 2 2 1 2 3 D O 4 D 28 29...

Page 16: ...a closed open 1 3 1 2 3 3 8 3 8 4 a 5 4 600x600 5 1 2 1 2 1 2 1 2 D 3 8 3 8 6 1 2 1 2 1 2 D 30 31...

Page 17: ...Pos OFF Pos 1 6 1 2 5 3 4 e g VDE 0100 IEC 3 C L2 1 1 2 3 4 5 A S 6 1 6 2 3 A 4 1 S 2 3 4 5 6 7 IP25 32 33...

Page 18: ...S 7 SDB STB 1 1 2 10 30 3 4 50 C S 30 C 60 C 55 C 8 a closed open c b Strainer 1 2 3 a 4 b c 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 34 35...

Page 19: ...NOTE NOTE...

Page 20: ...1 2 3 4 5 www germanpool com Specifications are subject to change without prior notice If there is any inconsistency or ambiguity between the English version and the Chinese version the English versi...

Page 21: ...io Industrial Pou Fung 145 Rua de Francisco Xavier Pereira Macau Tel Fax 853 2875 2699 853 2875 2661 Macau All rights reserved Copying reproducing or using the contents of this manual is not allowed w...

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