background image

6  720  608  487  

.  

•  00  -  thermostat

If  the  boiler  is  not  switched  off,  it  returns  to  normal  

working  condition  after  5  minutes.

•  00  -  blower  off

until  obtained  on  the  display

B  Turn  the  thermostat  to  

instruction  "19".

If  the  burner  is  still  running,  it  is  not  possible  to  perform  the  test,  

and  the  display  shows

8.4.12  Gas  adapter  valve

until  obtained  on  the  display

•  01  -  the  earth

•  01  -  pump  stopped

Pump  status  information.

.  

The  display  shows:

to  the  right,  valve  in

until  obtained  on  the  display

8.4.14  Blowing

Thermostat  status  information,  ie:

All  symbols  appear  on  the  display.

B  Turn  the  thermostat  to  

instruction  "18".

central

to  the  left

32  

B  Turn  the  thermostat  to  "13".

external  circuit

instruction  "14"

.  

.  

•  00  -  pump  running

8.4.19  3-way  valve  test

The  display  shows:

B  Shut  down  and  restart  the  boiler  again.

The  display  shows:

•  01  -  thermostat  closed

Adapter  valve  status  information.

until  on  the  display

•  00  -  no  flame

The  display  shows:

•  between  01  and  70  -  minimum /  maximum  adjustment  value

If  the  burner  is  still  running,  it  is  not  possible  to  perform  the  test,  

and  the  display  shows

Depending  on  the  position  of  the  thermostat

instruction  "17"

B  Turn  the  thermostat  on

8.4.18  Pump  test

•  02  -  terrestrial

until  obtained  on  the  display

until  obtained  on  the  display

•  00  -  valve  closed

central

Blower  status  information.

.  

Disable  fault  diagnosis  mode

•  02  -  works  in  the  external  circuit

The  display  shows:

B  Turn  the  thermostat  knob  appears  

15.

3-way  valve  status  information.

Maintenance

B  Turn  the  thermostat  to  

instruction  "21"

The  display  shows:

8.4.15  Ionization

the  vent

until  obtained  on  the  display

B  Turn  the  thermostat  on

•  00  -  thermostat  open

until  obtained  on  the  display

B  Turn  the  thermostat  to  "20".

•  01  -  thermostat

•  01  -  blower  on

8.4.16  Pump

•  01  -  works  in  the  internal  circuit

•  01  -  with  flame

8.4.13  Thermostat

until  obtained  on  the  display

B  Turn  the  thermostat  to  

instruction  "16".

intern.  

8.4.17  3-way  valve

perform  a  3-way  valve  test.

to  the  right

The  display  shows:

8.4.20  Digital  display  test

The  display  shows:

Depending  on  the  position  of  the  

thermostat,  perform  a  pump  test.

Thermostat  status  information.

to  the  left,  the  valve  in  the  circuit

Machine Translated by Google

Summary of Contents for Ceraclass midi ZS 24-2 DH AE 23

Page 1: ...ZW 24 2 DH AE 23 ZW 24 2 DH AE 31 ZS 24 2 DH AE 23 ZS 24 2 DH AE 31 Junkers Ceraclass midi Installation and operation manual Machine Translated by Google...

Page 2: ...valve test 8 7 4 2 Volumetric adjustment method 27 Installing the accessory drawer Safety instructions Checking the links Hot water boiler temperature control ZS models 23 Domestic water heating 31 17...

Page 3: ...original spare parts will be used B Do not use or store flammable materials he is not allowed to make modifications or repair the installation himself B The boiler switches off B The windows open Be c...

Page 4: ...and vice versa Gas family type Mounting kit gaskets ZW 24 LCD screen with temperature reading display TR 15 RF with weekly programming ZS 24 EEC 89 336 EEC and corresponds to the approval sample descr...

Page 5: ...36 The face 88 Wall mounting bracket Control panel 90 2 6 Dimensions 6 720 608 487 Power plant information Fig 1 5 FIG 2 Top view Machine Translated by Google...

Page 6: ...Burner 6 19 MAX gas adjusting screw Ventilator 5 3 way motorized valve 2 62 Circulation pump with automatic aerator 70 Nitrogen loading valve Air intake duct 73 Static heat exchanger 59 66 72 Automat...

Page 7: ...nozzle 75 Flow limiter 2 68 Temperature limiter Heating system return Ionization electrode 19 Nozzle Expansion tank 79 Manometer 59 65 MAX gas adjusting screw 3 way valve motor 74 Differential pressur...

Page 8: ...will take place automatically If this also fails a safety stop follows Direct extraction ZW 2 10 3 Pump 8 flames An ionization electrode 3 takes over the monitoring B Press the emergency key The burne...

Page 9: ...etermined according to the preload pressure in the expansion vessel B Open the nitrogen filling valve 70 and lower the preload pressure to 0 5 bar The boiler is in operation and the room temperature i...

Page 10: ...Nominal water flow at T 20 C 18 kW 1 8 10 Central heating system 53 Flue gas values l min Maximum power consumption unity Maximum pressure bar C 11 9 26 5 kW 0 75 Natural gas H Domestic hot water ZW...

Page 11: ...ted according to 33 kg unity Weight no packaging 0 35 Dimensions H x W x H Power absorbed IP l min X4D 11 50 Hz bar 230 Electrical voltage 11 8 700 x 400 x 298 Protection type Overview ZS ZW 24 DH AE...

Page 12: ...gulations for the design and execution of liquefied petroleum gas LPG supply systems I 31 Norm for the operation of natural gas supply systems I 6 1 98 Instantaneous hot water generators Normative for...

Page 13: ...on air must be free of hazardous substances Halogenated acids containing chlorine or fluorine bonds are considered to be corrosion promoting substances If it is not possible to meet these conditions a...

Page 14: ...ding the minimum distances specified in Fig 7 B Remove the package and follow the instructions on the package B Attach the wall bracket to the appropriate position in the room see section 4 3 B Mark t...

Page 15: ...ard B To remove the control panel completely when it is positioned as in Fig 10 get up and pull forward For electrical safety reasons the jacket and control panel are secured against unauthorized remo...

Page 16: ...1 4 B Install the diameter diaphragm 2 in diameter Warning Rolling diaphragm to be 7 5 NG B Check all gaskets for proper positioning finally tighten the Dutch pipe connection nuts B To install the ac...

Page 17: ...r check pressure per manometer B Switch on the boiler and check the circuit pressure initial Pressure leaks may occur during boiler installation In such cases repeat the filling process until the pres...

Page 18: ...ns interventions on the electrical part fuses switch B Insert the plug of the power cord into a grounded outlet always disconnected before The electrical connection must comply with the rules in force...

Page 19: ...the room thermostat TR 12 TRZ Fig 21 TRZ 12 2 12 2 Electrical connections 19 Fig 22 TR 15 RF Room thermostat Fig 20 TR 12 B Remove the jumper between terminals 1 4 Fig 19 item 83 Fig 23 EU 9 D Machin...

Page 20: ...the Junkers service technicians for the kit Indirectly heated boiler with NTC sensor boiler flexible tubing Connecting cable with adaptation required The kit consists of an NTC sensor with a cable and...

Page 21: ...and on the other hand provide the customer with all the necessary information installs a softening system or 21 Putting into service B On ZW models the shut off valve opens Fig 25 51 Manometer Heatin...

Page 22: ...ometer shows the flow temperature heating fill the heating system again so that a pressure of 1 2 bar is obtained frost free position if the thermostat is in this position a primary circuit temperatur...

Page 23: ...ing the controller approx 70 C B The temperature for the normal operating mode will not be set above 60 C B Turn the temperature control on the boiler counterclockwise until it stops This plant has a...

Page 24: ...al gas for at least 2 seconds to save the settings made The LED and display flash Other adjustments can be made in service mode It is recommended to adjust according to the method of adjusting the pre...

Page 25: ...boiler for maximum nozzle pressure At a supply pressure between 15 mbar and 18 mbar for natural gas the rated power must be set to 85 MIN at twelve mbar 1 74 B Turn the temperature knob The digital d...

Page 26: ...or the minimum heating power see Tab 11 74 Gas supply pressure control Propane 2 1 kg h Bhutan1 Propane1 B The service mode is activated see chapter 7 2 flashing and connect the manometer with a U sha...

Page 27: ...a flashing light and the indication The control system will adjust the boiler to the maximum heating power l min completely in mbar 32 35 B Turn the temperature knob necessary 16 18 8 Heating power kW...

Page 28: ...to exit service mode 1 4 B Remove the protective cover by releasing the four 12 B Turn the temperature knob B Pass the modified gas type on the nameplate 1 1 l min B Remove the burner 42 7 GPL 28 74 2...

Page 29: ...el and if necessary fill it with an air pump at approx 0 75 bar B Gaskets and sealing rings will be removed always disconnected before the heat B The power supply to the boiler will be spare parts saf...

Page 30: ...t B Tighten all joints again with screwing Reading B Check for gas leaks Reading Last 8 failures B The service gas valve is closed Fig 35 13 Digital display test Once the parameter number has been sel...

Page 31: ...until obtained on the display 01 there is water flow B Turn the thermostat to 10 8 4 5 Temperature selected for flow 8 4 8 Differential pressure switch until obtained on the display No summer mode of...

Page 32: ...e burner is still running it is not possible to perform the test and the display shows Depending on the position of the thermostat instruction 17 B Turn the thermostat on 8 4 18 Pump test 02 terrestri...

Page 33: ...rcuit Checking the status of the limiter No ionization current occurs Check the connections to the pressure switch Ventilate the system and open the automatic boiler aerator displays Gas valve failure...

Page 34: ...switch connections are Insufficient water flow for Check connections Solution limestone Excess temperature in the primary circuit 34 Possible cause Check that the combustion chamber and or heat exchan...

Page 35: ...6 720 608 487 35 Machine Translated by Google...

Page 36: ...Thermotechnical Department Str Horia Macelariu Nr 30 34 www bosch romania ro 013937 Bucharest S C Robert Bosch S R L Machine Translated by Google...

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