Related Manuals for Italtherm CITY CLASS 20 F
Summary of Contents for Italtherm CITY CLASS 20 F
- Page 1 SERVICE Manual CITY CLASS 20 F - 25 F - 30 F - 35 F 20 FR - 25 FR - 30 FR - 35 FR Green Heating Technology...
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Page 2: Table Of Contents
Info menù � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 26 Available models PCB configuration Model GAS type* code 20120 City Class 20 F Max heat input 20 kW (21120) (G30/G31) 20120 City Class 25 F Max heat input 25 kW... -
Page 3: Pcb Code
PCB Code PCB Code is placed close to the control panel and it is visible leaving metal cover City Class F City Class F City Class F City Class FR City Class FR City Class FR Digits Value Aestethic Gas Type Power Hydraulic Not used... -
Page 4: Pcb Boiler Combustion Reset
PCB boiler combustion reset PCB RESET = 2 parameters to factory setting a PCB code reset It can be done only in first 3 min after switching ON (in case switch OFF and ON again the boiler). It is advised for solving some puzzling problem on the field. •... -
Page 5: Check List First Ignition
Check list first ignition Installation done under country regulation in force done Verify the length of exaust flue system,and verify the installation of reducer for short system if needed (supplied with boielr’s documentation) No leakage between part of the system (extension, bends and flanges) Flues and air system Avoiding flues recirculation, respecting the minimum distances between the flues and air pipes with split configuration and between air/flues pipe and walls with the... -
Page 6: User Guide
User Guide The front control panel: PUSHBUTTONS AND KNOBS Stand-by / Functioning mode At every press, the boiler switches its mode from summer or winter mode. CH setting knob To set the CH system temperature. If the Outdoor Sensor Kit was installed, see also “Outdoor Sensor Kit” DHW setting knob To set the DHW temperature. -
Page 7: Access To The Inside Of The Boiler
Access to the inside of the boiler f Unscrew the casing fixing screws 1 and 2; f pull the casing 3 outwards, then push it upwards (to unhooF it from the tongues 4) and remove it; f unscrew the screw 5, then slide the control panel 6 upwards and overturn it downwards; f after the regulations, close the boiler repeating everything in the other sense, carefully hooking the casing 3 to the tongues 4. - Page 8 Boiler internal components 20 F - 25 F - 30 F Flue pressure switch 17 Filling valve Flue hood 18 By-pass (in-built in the 3-way valve hydraulic assembly) Expansion vessel 19 DHW exchanger (thermally insulated) Flame ignition/detection electrode 20 Burner Safety thermostat on system flow 21 Primary exchanger Temperature Sensor, system flow...
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Page 9: Boiler Internal Components 20-25-30Fr
Boiler internal components 20 FR - 25 FR - 30 FR Flue pressure switch 16 Burner Flue hood 17 Primary exchanger Expansion vessel 18 Sealed chamber Flame ignition/detection electrode 19 Fan Safety thermostat on system flow Temperature Sensor, system flow Motorized 3-way valve Automatic Venting Device (heating circuit, incorporated in the pump) -
Page 10: Boiler Internal Components 35F
Boiler internal components 35 F Flue pressure switch 17 Filling valve Flue hood 18 By-pass (in-built in the 3-way valve hydraulic assembly) Expansion vessel 19 DHW exchanger (thermally insulated) Flame ignition/detection electrode 20 Burner Safety thermostat on system flow 21 Primary exchanger Temperature Sensor, system flow 22 Sealed chamber Motorized 3-way valve... -
Page 11: Boiler Internal Components 35Fr
Boiler internal components 35 FR Flue pressure switch 16 Burner Flue hood 17 Primary exchanger Expansion vessel 18 Sealed chamber Flame ignition/detection electrode 19 Fan Safety thermostat on system flow Temperature Sensor, system flow Motorized 3-way valve Automatic Venting Device (heating circuit, incorporated in the pump) Safety valve 3 bar 10 Pump... -
Page 12: Hydraulic Diagram F
Hydraulic components F 1 Flue pressure switch 22 Sealed chamber 2 Flue hood 23 Fan 3 Expansion vessel 30 Check valve 5 Safety thermostat on system flow 6 Temperature Sensor, system flow R Heating return 7 Motorized 3-way valve M Heating flow 8 Automatic Venting Device C Hot water outlet (heating circuit, incorporated in the pump) -
Page 13: Hydraulic Diagram Fr
Hydraulic components FR M RB 1 Flue pressure switch R Heating return 2 Flue hood M Heating flow 3 Expansion vessel RB Return from storage coil 5 Safety thermostat on system flow MB Flow to storage coil 6 Temperature Sensor, system flow G Gas inlet 7 Motorized 3-way valve 8 Automatic Venting Device... -
Page 14: Electrical Diagram F
Electrical diagram F 14.1 14.2 M0101 M0102 M0901 M0900 M0904 Optional external devices: 1 Flue pressure switch (*) 4 Flame ignition/detection electrode TA Room thermostat: (or Chronothermostat) SELV simple contact. Closed contact = heating request. 5 Safety thermostat on system flow (*) or Remote control (original accessory only) 6 Temperature Sensor, system flow SE To optional outdoor temperature sensor... -
Page 15: Electrical Diagram Fr
Electrical diagram FR (SP) 13.1 (ST) 13.2 M0101 M0102 M0901 M0900 M0904 Optional external devices: 1 Flue pressure switch (*) 4 Flame ignition/detection electrode SP DHW Storage temperature Probe (**) 5 Safety thermostat on system flow (*) ST DHW Storage Thermostat (*) (**) 6 Temperature Sensor, system flow TA Room thermostat: (or Chronothermostat) SELV simple contact. -
Page 16: Heating System Filling And Pressuring
Heating system filling and pressuring Once all system connections have been carried out, proceed with system filling. This operation should be made with care, respecting the following steps: Open the radiators venting devices; Check that the plug of the automatic air vent, incor- porated in the boiler circulator, is unscrewed: if not, unscrew it and leave it unscrewed, even afterwards, for normal operation;... - Page 17 Heating system filling and pressuring Once all system connections have been carried out, proceed with system filling. This operation should be made with care, respecting the following steps: Open the radiators venting devices; Check that the plug of the automatic air vent, incor- porated in the boiler circulator, is unscrewed: if not, unscrew it and leave it unscrewed, even afterwards, for normal operation;...
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Page 18: Dhw Exchanger
DHW exchanger Green Heating Technology SERVICE Manual City Class F-FR... - Page 19 Dismounting & mounting FLOW STAT TOOLS tools suggested: allen Fey 4 mm - antiscale liquid for cleaning DISMOUNTING discharge boiler water from both side (DHW and CH) see procedure • rotate safety 3 bar (D) 90* clockwise to show the right fixing screw by hands •...
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Page 20: Combustion Components
Combustion components Green Heating Technology SERVICE Manual City Class F-FR... - Page 21 Dismounting & mounting BURNER AND FAN TOOLS tools suggested: wrench 24 mm - cross screwdriver - plastic brush - straight plier DISMOUNTING leave electric supply and close the gas inlet by hand • remove the sealed chamber, unscrew the 5 screws (A) Cross screwdriver •...
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Page 22: Gas Valve Calibration
Gas valve GAS VALVE TOOLS tools suggested: screw - nut CALIBRATION Outlet pressure: Values written on User manual (1) • Inlet pressure: Net pressure must be: 20 mbar – MTN / 29- 37 mbar - LPG (2) • Vent Connection: Pressure compensation on sealed chamber (3) •... -
Page 23: How To Access The Parameters
How to access parameters storing Scrolling Changing parameters values Boiler Mode OFF at minimum value; then press RESET for 6 sec. until display is showing on the left Put both knobs «00» (n°of Parameter) and on the right «000» (Value of Parameter chosen). Acting on left knob for scrolling Parameters. -
Page 24: Parameters F-Fr
Standard Parameter for general uses Parameters Suggested to not modify Fact. Param. Description Range settings Note 0 : G20 F FR Type Gas 0 ÷ 1 1 : G31 0 : Standard Range 35 ÷ 80 °C F FR CH Temperature Range 0 ÷... -
Page 25: Errors F-Fr
Errors Code Error Find Description Suggestion • Gas pressure inlet lower than required No flame ignition F FR RESET • Electrode position not correct (after 3 attempts) • PCB is not managing ignition High Water Temperature on Primary • Safety Thermostat open; check water circulation and pressure F FR RESET (Safety Thermostat) -
Page 26: Info Menù
Pump capacity diagram 00361 A 01 The graph is referred to the capacity available to the system. mod. 20F - 25F speed 3 - 2 of the pump 1000 1200 1400 1600 water flow (l/h) 00361 B 01 The graph is referred to the capacity available to the system. -
Page 27: Error History
Pump capacity diagram 00381 A 00 City Class 20 FR City Class 25 FR speed 3 - 2 of the pump The graph is referred to the capacity available to the system. 1000 1200 1400 1000 1200 1400 water flow (l/h) water flow (l/h) 00381 B 00... -
Page 28: Technical Boiler Data F
Technical data City Class 20 F City Class 25 F City Class 30 F City Class 35 F U.M. Gas type G30/G31 G30/G31 G30/G31 G30/G31 Class 2H3+ 2H3+ 2H3+ 2H3+ Type B22 - C12 - C32 - C42 - C52 - C62 - C82 Working temperature °C... -
Page 29: Service Function
Technical data City Class 20 F City Class 25 F City Class 30 F City Class 35 F U.M. Gas type G30/G31 G30/G31 G30/G31 G30/G31 Electrical data Voltage / frequency 220÷240 / 50 220÷240 / 50 220÷240 / 50 220÷240 / 50... - Page 30 Technical data City Class 20 F City Class 25 F City Class 30 F City Class 35 F U.M. Gas type G30/G31 G30/G31 G30/G31 G30/G31 Class 2H3+ 2H3+ 2H3+ 2H3+ Type B22 - C12 - C32 - C42 - C52 - C62 - C82 Working temperature °C...
- Page 31 Technical data City Class 20 F City Class 25 F City Class 30 F City Class 35 F U.M. Gas type G30/G31 G30/G31 G30/G31 G30/G31 Dimensions Width - Height - Depth see “Dimensions and connections” Weight: net / gross 27.5 / 29.7 30.2 / 32.6...
- Page 32 ITALTHERM S.p.A. Via S. D’Acquisto | 29010 Pontenure (PC) Italy | P.iva - C.F. 01594830331 | Tel (+39) 0523.575611 | www.italtherm.it...
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