Junkers ZWE 24-5 MFA Service Manual
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Junkers ZWE 24-5 MFA Service Manual

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מרדכי יורם
March 20, 2025

מה צריך לעשות כשהמכשיר מראה c4

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1 comments:
Mr. Anderson
March 20, 2025

When the Junkers ZWE 24-5 MFA shows error code C4, follow these steps:

1. Check APS hoses: Ensure they are not damaged, blocked, or have condensation.
- If damaged or blocked, turn off the appliance, clean and dry the hoses, then switch it back on.
- If C4 is still flashing, proceed to step 2.

2. Check 20-poled connection cable: Inspect for damage.
- If damaged, change the cable harness and switch on the appliance.
- If C4 is still flashing, proceed to step 3.

3. Check APS functionality: Verify if it is working.
- If APS is not working, further investigation or replacement may be needed.

Following these steps should help diagnose and resolve the C4 error.

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Summary of Contents for Junkers ZWE 24-5 MFA

  • Page 2 Safety precautions ZWE 24/28-5 MFK/MFA/MFAE types Symbols 7.1.1 ZWE 24-5 MFK types 7.1.2 ZWE 24-5 MFA types Appliance layaut and hydraulic diagrams 7.1.3 ZWE 24-5 MFAE / NGVM 24-4 types Appliance layaut 7.1.4 ZWE 28-5 MFA / 29 VRC types 2.1.1...
  • Page 3 Safety precautions and symbols Safety precautions and symbols Safety precautions Symbols Safety instructions in this document are Danger on smelling gas identified by a warning-triangle symbol and Turn off gas service cock (page 25). are printed on a grey background. Open the windows.
  • Page 4 4 | Appliance Layout and Hydralic Diagrams 2. Appliance layout and hydralic diagrams 2.1 Appliance layout 2.1.1 ZWE 24/28-5 MFA/MFAE 221.1 221.2 18.1 361.1 6 720 613 076-02.1O Fig. 1 Testing point (injector pressure) Gas valve Heatronic 3 Adjusting nut for max. gas inlet flow volume Temperature limiter for heat exchanger Adjusting screw for min.
  • Page 5 Appliance Layout and Hydralic Diagrams 2.1.2 ZWE 24-5 MFK 18.1 361.1 6 720 613 077-02.1O Fig. 2 Testing point (injector pressure) Temperature sensor in CH flow Heatronic 3 System filling loop Temperature limiter for heat exchanger Draught diverter Flue gas monitoring system (draught diverter) CH flow Flue gas monitoring system (combustion chamber) Gas valve...
  • Page 6 4 | Appliance Layout and Hydralic Diagrams 2.1.3 ZXC 21/24/28/30/35-3 MFA/MFAP/MFAE/MFAM 221.1 221.2 18.1 361.1 6 720 613 084-03.1O Fig. 3 Testing point (injector pressure) Gas valve Heatronic 3 Adjusting nut for max. gas inlet flow volume Temperature limiter for heat exchanger Adjusting screw for min.
  • Page 7 Appliance Layout and Hydralic Diagrams 2.1.4 ZSC 21/24/28/30/35-3 MFA/MFAE/MFAP/MFAM 221.1 221.2 18.1 361.1 6 720 613 084 - 04.1O Fig. 4 Testing point (injector pressure) Gas valve Heatronic 3 Adjusting nut for max. gas inlet flow volume Temperature limiter for heat exchanger Adjusting screw for min.
  • Page 8 8 | Appliance Layout and Hydralic Diagrams 2.1.5. ZWC 18/24/28 MFK/MFKP 18.1 361.1 6 720 613 085 - 03.1O Fig. 5 Testing point (injector pressure) Temperature sensor in CH flow Heatronic 3 System filling loop Temperature limiter for heat exchanger Draught diverter Flue gas monitoring system (draught diverter) CH flow...
  • Page 9 Appliance Layout and Hydralic Diagrams 2.1.6 ZSC 18/27/28 MFK 18.1 361.1 6 720 613 085 - 04.1O Fig. 6 Testing point (injector pressure) Temperature sensor in CH flow Heatronic 3 Draught diverter Temperature limiter for heat exchanger CH flow Flue gas monitoring system (draught diverter) Gas valve Flue gas monitoring system (combustion chamber NTC) Adjusting nut for max.
  • Page 10 10 | Appliance Layout and Hydralic Diagrams 2.2 Hydraulic Diagrams 2.2.1 ZWE 24/28-5 MFA/MFAE Fig. 7 6 720 660 238 (2008/07)
  • Page 11 Appliance Layout and Hydralic Diagrams 2.2.2 ZWE 24-5 MFK Fig. 8 6 720 660 238 (2008/07)
  • Page 12 12 | Appliance Layout and Hydralic Diagrams 2.2.3 ZWC 21/24/28/30/35-3 MFA/MFAP/MFAE/MFAM Fig. 9 6 720 660 238 (2008/07)
  • Page 13 Appliance Layout and Hydralic Diagrams 2.2.4 ZSC 21/24/28/30/35-3 MFA/MFAE/MFAM Fig.10 6 720 660 238 (2008/07)
  • Page 14 14 | Appliance Layout and Hydralic Diagrams Function diagram, ZWC 18/24/28-3 MFK – Ceraclass Excellence Fig. 11 Testing point (injector pressure) CH flow Hot water flow Temperature limiter for heat exchanger Gas inlet Combustion chamber NTC Cold water inlet Temperature sensor for hot water CH return Testing point for gas supply pressure Discharge...
  • Page 15 Appliance Layout and Hydralic Diagrams 2.2.6 ZSC 18/24/28-3 MFK Fig.12 Testing point (injector pressure) CH flow Hot water flow Temperature limiter for heat exchanger Gas inlet Combustion chamber NTC Cold water inlet Temperature sensor for hot water CH return Testing point for gas supply pressure Discharge Manometer Pressure regulator...
  • Page 16 8 | Functions of Heatronic 3 HEATRONIC 3 UNIT FUNCTIONS Temperature display: Push either buttons until 9.A is demonstrated in display. Push once the buton. After then the button's ligth will be In normal opening conditions while heating, display only on and the chosen value (1) will be demostrated in the demonstrates the temperature of CH flow.
  • Page 17 Functions of Heatronic 3 | 17 Push once the buton After then the button's ligth will 3.4. Service Functions be on and the chosen value will be demostrated in the display. The service functions are divided into two levels: The 1st To change/arrange service function: level includes service function upto 7.C.
  • Page 18 18 | Functions of Heatronic 3 Service Mode Description Display Range Default Value (ºC). Display max. flow temperature by outdoor temp. control 0 - 99 ºC (heating circuit) 0 - 99 Display actual flow rate turbine (of/min) Display programmes inputs. 00;01 00 = off, 11 = on 10;11...
  • Page 19 Functions of Heatronic 3 | 19 Press button and then release it. After releasing 2.2 nd Level Service Mode button lights up and display shows the value of selected service mode. 3.4.2 Selectry 2 nd Level service Functions Entering a setting To change or examine a service function: Press button or button...
  • Page 20 20 | Electrial Wiring Diagrams 4 Electrial wiring diagrams 4.1 ZWE 24/28-5 MFA/MFAE types RAS 5;3 ways RAS 5;2 ways Terminal 328.1 – RAS 3 ways ST19 ST10 ST15 ST17 9V/25 V 230 V 52.1 230V/AC 6 720 613 076-03.1O Fig.
  • Page 21 Electrial Wiring Diagrams | 21 ZWE 24-5 MFK types 328.1 – ST19 ST10 ST15 ST17 9V/25 V 230 V 52.1 230V/AC 6 720 613 077-03.1O Fig. 14 Ignition transformer 315 Terminal block for programmer (EMS bus) and outside tem- Temperature limiter for heat exchanger perature sensor Flue gas monitoring system (draught diverter) 319 Terminal block for external limiter...
  • Page 22 22 | Electrial Wiring Diagrams 4.3 ZWC/ZSC 21/24/28/35 - 3 MFA / MFAE / MFAP types – ST19 ST15 ST17 – ST19 ST15 ST17 328.1 – ST19 ST25 ST10 ST15 ST17 9V/25 V 230 V 52.1 230V/AC 6 720 613 084-05.1O Fig.
  • Page 23 Electrial Wiring Diagrams | 23 4.4 ZWC/ZSC 24/28/30/35 MFAM types – ST19 ST15 ST17 328.1 – ST19 ST25 ST10 ST15 ST17 9V/25 V 230 V 52.1 230V/AC 6 720 613 782-04.1O Fig. 16 Ignition transformer 228 Differential pressure switch Temperature limiter for heat exchanger 300 Code plug Temperature sensor, DHW (ZWC) 302 Earth connection...
  • Page 24 24 | Electrial Wiring Diagrams 4.5 ZWC/ZSC 18/24/28-3 MFK / MFKP types – ST19 ST15 ST17 328.1 – ST19 ST25 ST10 ST15 ST17 9V/25 V 230 V 52.1 230V/AC 6 720 613 085-05.1O Fig. 17 Ignition transformer 161 Link Temperature limiter for heat exchanger 300 Code plug Flue gas monitoring system (draught diverter) 302 Earth connection...
  • Page 25 Electrial Values | 25 5 ELECTRICAL VALUES 5.1 ZWC 21/24/28/30/35-3 MFA / MFAP / MFAE / MFAM and ZWE 24/28-5 MFA / MFAE types Range Related Heatronic Measurement Pos. Description Tolerance Remarks Service Function Point Limit Tthermostat Limit = 110 White socket on St9 ºC (RAS 2,5:20 pole connector)
  • Page 27 Electrial Values | 27 5.2 ZWC / ZSC 18/24/28-3 MFK / MFKP and ZWE 24-5 MFK types Heatronic Measurement Value Expected Pos. Definition Tolerance Explanation Parameter Point Limit White socket Limit=110°C Thermostat (RAS 2,5:20 pole connector) Connector: 13-14 ± 0,5 k ? White sock 20 ºC =>...
  • Page 28 28 | Electrial Values Heatronic Measurement Value Expected Tolerance Explanation Pos. Definition Parameter Point Transformator Enter(230V)=48? Measure when the Exit 9VDC:1? trafo Exit 25 VDC:1,4? Fuse T 1,6 A, At the fuse 24 V DC At the fuse Fuse T 0,5A, 5 V DC Flow rate White sock...
  • Page 29 Troubleshooting | 29 6.2 Failure display Troubleshooting 6.1 How to use Error codes The failures are divided into 4 groups: Category 1:appliance remains locked until on/off switch is Each error codes explained with general error reasons. Follow pressed. the instructions to remove the error Category 2: appliance remains locked until error is removed Category 3: appliance goes on limited working Category4: appliance remains locked until reset button is...
  • Page 30 30 | Troubleshooting Control Step / Not plugged properly or Error Error Error Description Page Category Code bridge is missing Not plugged properly or bridge is missing Link 161 on St8 is not detected. (see electrical wiring diagrams Insert code plug correctly test and Code plug not detected replace it necessory DHW NTC is not correctly...
  • Page 31 Troubleshooting | 31 Error codes IS FLASHING Flue gas leak from flue hood Turn off the appliance and open again Wait for appliance to restart automaticaly after 12 minutes Order Control Step Measures Check if flue gas leak from draft driverter? Yes: ↓...
  • Page 32 32 | Troubleshooting and later is flashing Flue gas leakage from combustion chamber Order Control Step Measure Is there temperature increase under Yes: ↓ 2. burner or on combustion chamber ↓ 3. Measure CO and check if it is in limits Yes: Check if combustion chamber temperature NTC is less than...
  • Page 33 Troubleshooting | 33 and later is flashing Flue gas leakage from combustion chamber Order Control Step Measure Check if combustion chamber NTC is Yes: Change the sensor(NTC) defective or not Fasten the connection cable Switch on the appliance Turn off the appliance If A2 still flashing, ↓...
  • Page 34 34 | Troubleshooting IS FLASHING Flue gas NTC is blocked Order Control Step Measure Yes: Check cable connectýons(especially on RAS5;20 Pull out connections of flue gas NTC way connector) ýf needed replace cable harners Measure the resistance Is the range in between 0-30 k? Change flue gas NTC.
  • Page 35 Troubleshooting | 35 IS FLASHING A fast temperature increase detected inCH. (> 40 K / secs) Order Control Step Measure Check system pressure on Yes: ↓ 2. manometer. Fill the system with water. Is the system pressure > 0,5 bar? If d4 still flashing? ↓...
  • Page 36 36 | Troubleshooting IS FLASHING Air pressure switch (APS) opens during operation Order Control Step Measure Check flue pipe for any blockage or ↓ 2. wrong installation Yes: Turn off the appliance Clean the flue gas pipe or corrent the installation Switch on the appliance If C1 still flashing ↓...
  • Page 37 Troubleshooting | 37 IS FLASHING Air pressure switch (APS) opens during operation Order Control Step Measure Yes: Cheek if fan is operating correctly ↓ 8. Change fan If C1 still flashing? ↓ 8. Yes: Change the cable harness Check if the 20 poled connection cable damaged.
  • Page 38 38 | Troubleshooting IS FLASHING APS contacts remain closed Order Control Step Measure Check if APS hoses are damaged or ↓ 2. blocked or check if there is condensation Yes: Turn off the appliance in hoses? Clean and dry APS hoses. Switch on the appliance If C4 still flashing? ↓...
  • Page 39 Troubleshooting | 39 IS FLASHING Air pressure switch not closing. Order Control Step Measure ↓ 2. Check flue pipe for any blockage or wrong installation Yes: Turn off the appliance Clean the flue gas pipe or correct the installation Switch on the appliance If C6 still flashing ↓...
  • Page 40 40 | Troubleshooting IS FLASHING Air pressure switch not closing Order Control Step Measure Check fan cables for damages? Yes: Turn off the appliance Change fan cable Switch on the appliance If C6 still flashing? ↓ 8. ↓ 9. Yes: Change the cable harness Check if 20 poled connection cable damaged.
  • Page 41 Troubleshooting | 41 IS FLASHING Over heat thermostat triggered Order Control Step Measure Check if system pressure is > 0,5 bar. Yes: Fill the system with water Make sure all air removed from the system If E9 is flashing 2. Turn pump propeller manually by help of a screw driver Check if circulation pump is blocked.
  • Page 42 42 | Troubleshooting IS FLASHING Over hest thermostat triggered Order Control Step Measure Electronic card is out of order Switch off the appliance. Cut mains supply Change the electronic card Connect to mains supplu Switch on the appliance 6 720 660 238 (2008/07)
  • Page 43 Troubleshooting | 43 IS FLASHING Combustion chamber NTC is defective Order Control Step Measure Check if the combustion chamber Yes: Check the connection cable. temperature sensor (NTC) is damaged. If A6 still flashing or not. Turn off the appliance. Change the NTC. Pull out the cables Connect cables.
  • Page 44 44 | Troubleshooting IS FLASHING CH NTC is defective Order Control Step Measure Check if CH flow temperature sensor Yes: Check the connection terminal on NTC (NTC) is damaged or not? If E2 still flashing Turn of the appliance Change the NTC. Pull cables out Fasten the connection cable.
  • Page 45 Troubleshooting | 45 IS FLASHING Bus communication interrupted Order Control Step Measure Yes: Are EMS BUS (on St19) cables connected in parslled to toom control unit and other Fix cable connections make connected modules? Check if room control unit and other Sure all modules and controllers have 15 VDC modules have 15 VDC or not? Push the reset button.
  • Page 46 46 | Troubleshooting IS FLASHING Flame not detected Order Control Step Measure Check if Ionization electrode detect the Yes: flame or not? Yes: Is the gas inlet valve open? Open the gas inlet valve. Push the reset button and switch on the appliance again.
  • Page 47 Troubleshooting | 47 IS FLASHING Flame not detected Order Control Step Measure Is the groun d i n g connection done Yes: Correct ground connection correctly? Push the reset button If EA still flashing Yes: Connect cables Is the gas valve working? Turn on the appliance.
  • Page 48 48 | Troubleshooting IS FLASHING Flame not detected Order Control Step Measures Yes: Is ionization electrode and ignition bridge assembled correctly? Correct the assembly Push reset button If EA still flashing Clean or change ignition electrodes Yes: Check ignition electrodes for Turn on the appliance.
  • Page 49 Troubleshooting | 49 IS FLASHING Flamed detected after appliance switched off. Order Control Step Measures Clean or change ionization electrode Yes: Check ionization electrode Switch on the appliance For damaged and/or oxidation Push reset button If F7 still flashing Check if main cable harness is damaged Turn off the appliance or not? Cut the mains supply voltage of the appliance.
  • Page 50 50 | Troubleshooting IS FLASHING Link 161 on St8 not detected Order Control Step Measures Check if the link 161 is in position? Turn off the appliance Insert link in St8 Switch on the appliance If d3 still flashing Yes: Electronic card is out of order Switch off the appliance Cut mains supply...
  • Page 51 Troubleshooting | 51 IS FLASHING Code plug not detected Order Control Step Measures Check if code plýg is correct or not via Yes: service function 8.b. Install correct code plug Restart appliance. If b1 still flashing Check if code plug is loose or not? Yes: Install code plug correctly Restart the appliance...
  • Page 52 52 | Troubleshooting IS FLASHING DHW NTC not installed correctly Order Control Step Measures Yes: Check if DHW NTC at its position or not? Install DHW NTC onits position Restart appliance Tap water for 3 minutes If A9 flashes again Yes: Check if water NTC damaged or Change NTC...
  • Page 53 Troubleshooting | 53 IS FLASHING Flame detected, after gas istumed off. Order Control Step Measures Yes: Clean or if needed Check if electrodes are damaged or Change electrode set oxidized? Restart appliance Push reset button Close gas inlet valve If FA flashes again, Yes: Is the gas valve working? Connect cables...
  • Page 54 54 | Troubleshooting E0/F0 IS FLASHING Internal failure Order Control Step Measures Correct the cable connection Check all cable connections for any Yes: Reset appliance intermittent contact? If EO/FO flashing, Enter the 8.C and 8.d Record displayed values to the service report Electronic card is out of order Switch off the appliance Cut mains supply...
  • Page 55 Troubleshooting | 55 IS FLASHING Plate heat exchanger blocked or DHW NTC is not at its position Order Control Step Measure Yes: Check if DHW NTC at its position or not? Install DHW NTC onits position Restart appliance Tap water for 3 minutes If AA flashes again Yes: Clean PHE or replace if needed...
  • Page 56 56 | Gas Setting Values 7.1. ZWE 24/28-5 MFK/MFA MFAE types 7.1.1. ZWE24-5 MFK 7.1.1.1. For countries with country codes: S5992 / S7492 Burner Pressure Gas flow mbar lt/min kg/h Gas type G20_20mbar G30_29mbar G20_20mbar G30_29mbar Power (kW) /Country code 14,5 18,9 10,7...
  • Page 57 Gas Setting Values | 57 7.1.1.3. For countries with country codes: S0492 / NGLM24-4 HN S0492 Burner Pressure Gas flow mbar lt/min kg/h Gas type G20_20mbar G30_29mbar G20_20mbar G30_29mbar Power (kW) /Country code 14,2 16,5 18,5 11,0 20,7 11,9 23,0 12,6 24,4 14,4...
  • Page 58 58 | Gas Setting Values 7.1.2. ZWE24-5 MFA 7.1.2.1 For countries with country codes: S4900 / S5900 / 7400 Burner Pressure Gas flow mbar lt/min kg/h kg/h Gas type G20_20mbar G30_29mbar G31_37mbar G20_20mbar G30_29mbar G31_37mbar Power (kW) /Country code 14,5 14,9 18,8 10,7...
  • Page 59 Gas Setting Values | 59 7.1.2. ZWE24-5 MFA 7.1.2.3. For countries with country codes: S0700 Burner Pressure Gas flow mbar lt/min kg/h G25_25mbar G25_25mbar Gas type G30_29mbar G30_29mbar Power (kW) /Country code 16,9 21,9 10,7 24,6 11,9 27,3 12,6 28,9 14,4 10,4 33,0...
  • Page 60 60 | Gas Setting Values 7.1.3. ZWE24-5 MFA E / NGVM24-4 HN 7.1.3.1 For countries with country codes: S0400 NGVM24-4 HN S0407 Burner Pressure Gas flow mbar lt/min kg/h Gas type G20_20mbar G30_29mbar G20_20mbar G30_29mbar Power (kW) /Country code 13,9 18,1 10,7 20,3...
  • Page 61 Gas Setting Values | 61 7.1.4.2 For countries with country codes: S5700/S7100 Burner Pressure Gas flow mbar lt/min kg/h G20_13mbar G20_13mbar Gas type G30_29mbar G30_29mbar Power (kW) /Country code 10,6 21,0 11,7 23,2 13,1 25,9 14,6 28,7 31,4 17,5 10,8 34,2 18,8 12,6...
  • Page 62 62 | Gas Setting Values 7.1.4.4 For countries with country codes: S5000 Burner Pressure Gas flow mbar lt/min kg/h lt/min Gas type G20_20mbar G30_29mbar G25.1_25mbar G20_20mbar G30_29mbar G25.1_25mbar Power (kW) /Country code 16,9 18,4 21,0 19,5 22,4 10,5 20,6 23,9 11,4 22,4 25,7...
  • Page 63 Gas Setting Values | 63 7.1.5 ZWE28-5 MFA E / NGVM28-4 HN 7.1.5.1 For countries with country codes:S0400 / S0407 Burner Pressure Gas flow mbar lt/min kg/h G20_20mbar G20_20mbar Gas type G30_29mbar G30_29mbar Power (kW) /Country code 16,5 19,0 10,5 20,1 11,4 21,8...
  • Page 64 64 | Gas Setting Values 7.2 ZWC/ZSC 18/21/24/28/30/35-3 MFK / MFKP / MFA / MFAP / MFAE / MFAM 7.2.1 ZWC/ZSC 18-3 MFK 7.2.1.1 For countries with country codes: S5092 Burner Pressure Gas flow mbar lt/min kg/h lt/min Gas type G20_20mbar G30_29mbar G25.1_25mbar...
  • Page 65 Gas Setting Values | 65 7.2.2 ZWC/ZSC24-3 MFK (P) / NGLA/NGLS24-4 HN 7.2.2.1 For countries with country codes: S0492 S3593 / S3792 / S4892 / S5092 / S5292 S6092 / S6192 / S6492 / S7292 /S7392 / S7492 , S0492 Burner Pressure Gas flow mbar...
  • Page 66 66 | Gas Setting Values 72.2.3 For countries with country codes: S5792 / S7192 Burner Pressure Gas flow mbar lt/min kg/h kg/h G20_13mbar G31_37mbar G20_13mbar G31_37mbar Gas type G30_29mbar G30_29mbar Power (kW) /Country code 10,7 11,9 10,6 12,6 11,8 14,4 11,9 15,1 15,6...
  • Page 67 Gas Setting Values | 67 7.2.3 ZWC/ZSC24/28-3 MFK - Dual output 7.2.3.1 For countries with country codes: S3593 / S3792 Burner Pressure Gas flow mbar lt/min kg/h Gas type G20_20mbar G30_29mbar G20_20mbar G30_29mbar Power (kW) /Country code 14,0 17,3 10,4 19,9 11,5 22,1...
  • Page 68 68 | Gas Setting Values 7.2.4 ZWC/ZSC28-3 MFK 7.2.4.1 For countries with country codes: S0492 / S3593 / S3792 / S5092 / S5292 / S5992 / S6092 / S6192 S7292 / S7392 / S7492 Burner Pressure Gas flow mbar lt/min kg/h kg/h lt/min...
  • Page 69 Gas Setting Values | 69 7.2.4.3 For countries with country codes: S5792 / S7192 Burner Pressure Gas flow mbar lt/min kg/h kg/h Gas type G20_13mbar G30_29mbar G31_37mbar G20_13mbar G30_29mbar G31_37mbar Power (kW) /Country code 10,5 11,7 13,1 14,6 11,4 16,0 11,4 13,6 17,5...
  • Page 70 70 | Gas Setting Values 7.2.5 NGLA/NGLS28-4HN… 7.2.5.1 For countries with country codes: S0492 NGLA/NGLS28-4HN S0492 Burner Pressure Gas flow mbar lt/min kg/h Gas type G20_20mbar G30_29mbar G20_20mbar G30_29mbar Power (kW) /Country code 16,9 18,7 10,5 20,6 11,7 22,9 13,1 25,6 14,6 28,5...
  • Page 71 Gas Setting Values | 71 7.2.6 ZWC/ZSC21-3 MFA 7.2.6.1 For countries with country codes: S5300 ZWC/ZSC21-3 MFA S5300 Burner Pressure Gas flow mbar m^3/h m^3/h m^3/h kg/h Gas type GZ50_20mbar GZ35_13 mbar GZ41.5_20mbar G30_37mbar GZ50_20mbar GZ35_13 mbar GZ41.5_20 mbar G30_37mbar Power (kW) /Country code 10,7...
  • Page 72 72 | Gas Setting Values 7.2.7 ZWC/ZSC24-3 MFA (P) 7.2.7.1 For countries with country codes: S4800 / S5200 / S5700 /S6000 / S6100 / S6300 / S6400 / S7100 S7300 / S7400 / S8300 Burner Pressure Gas flow mbar lt/min lt/min kg/h kg/h...
  • Page 73 Gas Setting Values | 73 7.2.8 ZWC/ZSC24-3 MFA E / NGVA/NGVS24-4HN 7.2.8.1 For counties with country codes: S0400 / S7200 / S0407 Burner Pressure Gas flow mbar lt/min lt/min kg/h G20_20mbar G20_20mbar G20_20mbar G20_20mbar G30_29mbar Gas type G30_29mbar Power (kW) /Country code S0400, S0407 S7200...
  • Page 74 74 | Gas Setting Values 7.2.8.3 For countries with country codes: S5000 Burner Pressure Gas flow mbar lt/min kg/h lt/min G20_20mbar G30_29mbar G20_20mbar G30_29mbar G25.1_25mbar Gas type G25.1_25mbar Power (kW) /Country code 14,0 16,4 18,2 21,3 10,7 20,5 23,9 11,9 22,7 26,4 12,6...
  • Page 75 Gas Setting Values | 75 7.2.9 ZWC/ZSC28-3 MFA 7.2.9.1 For countries with country codes: S5300 Burner Pressure Gas flow mbar m^3/h m^3/h m^3/h kg/h Gas type GZ50_20mbar GZ35_13 mbar GZ41.5_20mbar G30_37mbar GZ50_20mbar GZ35_13 mbar GZ41.5_20 mbar G30_37mbar Power (kW) /Country code 10,5 11,4 13,1...
  • Page 76 76 | Gas Setting Values 7.2.11 ZWC/ZSC28-3 MFA 7.2.11.1 For countries with country codes: S0400 / S7200 / S0407 Burner Pressure Gas flow mbar lt/min lt/min kg/h Gas type G20_20mbar G20_20mbar G30_29mbar G20_20mbar G20_20mbar G30_29mbar Power (kW) /Country code S0400, S0407 S7200 S0400, S0407 S7200...
  • Page 77 Gas Setting Values | 77 7.2.11.3 For countries with country codes: S5000 Burner Pressure Gas flow mbar lt/min kg/h lt/min G20_20mbar G30_29mbar G20_20mbar G30_29mbar G25.1_25mbar Gas type G25.1_25mbar Power (kW) /Country code 16,3 19,4 18,8 22,3 10,5 19,9 23,6 11,4 21,6 25,6 13,1...
  • Page 78 78 | Gas Setting Values 7.2.12 ZWC/ZSC35-3 MFA 7.2.12.1 For countries with country codes: S5300 Burner Pressure Gas flow mbar m^3/h m^3/h m^3/h kg/h GZ50_20mbar GZ35_13 mbar GZ41.5_20mbar G30_37mbar GZ50_20mbar GZ35_13 mbar GZ41.5_20 mbar G30_37mbar Gas type Power (kW) /Country code 10,6 12,1 13,1...
  • Page 79 Gas Setting Values | 79 7.2.13 ZWC/ZSC35-3 MFA 7.2.13.1 For countries with country codes: S4800/S5200/S5700/S6000/S6100/S6400/S7100/S7300/S7400 Burner Pressure Gas flow mbar lt/min kg/h kg/h G31_37mbar G31_37mbar Gas type G20_20mbar G30_29mbar G20_20mbar G30_29mbar Power (kW) /Country code 10,6 21,5 12,1 24,5 13,1 26,5 14,6 29,4...
  • Page 80 80 | Gas Setting Values 7.2.14 ZWC/ZSC35-3 MFA E / NGVA35-4HN 7.2.14.2 For countries with country codes: ZWC/ZSC35-3 MFA E S0400 / S7200 / NGVA35-4HN S0407 Burner Pressure Gas flow mbar lt/min lt/min kg/h kg/h Gas type G20_20mbar G20_20mbar G30_29mbar G30_29mbar G20_20mbar G20_20mbar...
  • Page 81 Gas Setting Values | 81 7.2.14.3 For countries with country codes: S5000 Burner Pressure Gas flow mbar lt/min kg/h lt/min Gas type G20_20mbar G30_29mbar G25.1_25mbar G20_20mbar G30_29mbar G25.1_25mbar Power (kW) /Country code 10,6 20,2 23,1 12,1 23,0 26,3 13,1 24,9 28,4 14,6 27,6...
  • Page 82 82 | Gas Setting Values 7.2.15 ZWC/ZSC24-3 MFA M 7.1.15.1 For countries with country codes: S3501 / S3700 Burner Pressure Gas flow mbar lt/min kg/h Gas type G20_20mbar G30_29mbar G20_20mbar G30_29mbar Power (kW) /Country code 14,0 18,2 10,7 20,5 11,9 22,7 12,6 24,0...
  • Page 83 Gas Setting Values | 83 7.2.17 NGVA/NGVS28-4HN 7.2.17.1 For countries with country codes: S0200 Burner Pressure Gas flow mbar lt/min kg/h lt/min Gas type G20_20mbar G30_29mbar G25_25mbar G20_20mbar G30_29mbar G25_25mbar Power (kW) /Country code 15,6 16,7 19,2 19,2 22,0 10,5 20,4 23,3 11,4...
  • Page 84 84 | Gas Setting Values 7.2.19 ZWC/ZSC35-3 MFA M 7.2.19.1 For countries with country codes: S3501 / S3700 Burner Pressure Gas flow mbar lt/min kg/h Gas type G20_20mbar G30_29mbar G20_20mbar G30_29mbar Power (kW) /Country code 10,6 23,1 12,1 26,3 13,1 28,3 14,6 31,2...
  • Page 85 NTC Resistance Tables | 85 Temperature Sensor Resistance Values 8.1 CH flow NTC 8.1.1 ZWC/ZSC-3 and NGVA/NGVS-4 types Temperature (ºC) Resistance (? ) 33242 19947 12394 7947 5242 3548 2459 1740 1256 Tab. 54 8.1.2 ZWE-5 and NGVM/NGLM-4 types Temperature (ºC) Resistance (? ) 35975 22763 14772...
  • Page 86 86 | NTC Resistance Tables 8.4 Combustion chamber NTC 8.2 DHW NTC Temperature (ºC) Resistance ( Temperature (ºC) Resistance (? ) 33242 19947 12394 24,08 7947 11,77 5242 6,12 3548 3,37 2459 1,95 1740 1,17 1256 1,04 Tab. 58 Tab. 56 8.3 Flue gas NTC Temperature (ºC)
  • Page 87 Symbols on Display | 87 9. Display Symbols Display Code Description Max. rated heat output (display flashes) Max. heating output setting (display flashes) Min. rated heat output (display flashes) Key lock active Drying function. If the floor drying function is activated on outside-temperature controlled programmer refer to programmer instructions.

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