Potterton 7668920 Engineer'S Service Manual Download Page 1 | Manualshive

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Titanium Heat

12 - 15 - 18 - 24 - 30

Condensing Central Heating Boiler

en

United Kingdom

Engineer’s Service Manual

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Summary of Contents for 7668920

Page 1: ...Titanium Heat 12 15 18 24 30 Condensing Central Heating Boiler en United Kingdom Engineer s Service Manual ...

Page 2: ...Useful electrical checks 9 6 4 Checking the operational working gas pressure 9 6 5 Measuring the gas rate 9 7 Setting and checking the air gas ratio 10 7 1 Setting the boiler to full part load 10 8 Error codes 11 8 1 Shutdowns and lock outs 11 8 1 1 Blocking 11 8 1 2 Lock out 11 8 1 3 Hard Reset 13 9 Maintenance 14 9 1 General 14 9 2 Standard Inspection Maintenance Operation 15 10 Spare parts 17 1...

Page 3: ...nformation about the operating condition of the boiler 4 The boiler is suitable for fully pumped open vented central heating and domestic hot water systems and sealed systems 5 An information label giving details of the model serial number and Gas Council number is situated on the front left underside of the outer case and is accessed by pulling forward gently 6 The boiler data label is positioned...

Page 4: ...lame is detected If a flame is not detected within the 5 second ignition period then 4 more ignition attempts are made If a flame is not detected after the 5 ignition attempts the boiler goes to an ignition lock out and an error light is displayed 4 Burner on After a successful ignition Burner on occurs Fan and Gas Valve on Spark Generator off The boiler flow temperature is controlled by varying t...

Page 5: ...ain components 5 1 Heat Exchanger 2 Combustion Control Unit 3 Condensate Trap 4 Exhaust Tube 5 Inlet Silencer 6 User Interaction Controller 7 Gas Cock 8 Air Pressure Switch 24 30 model only 9 System Drain Cock 10 Air Vent 1 2 3 4 5 6 7 8 9 10 ...

Page 6: ...iler The RESET button lights up green when the boiler has a demand The Chimney Sweep button can flash in a range of colours and at different frequencies The HMI also has one rotary knob The rotary knob can be used to set the maximum flow temperature of the heating water The temperature on this rotary knob must be set to a higher temperature than the cylinder thermostat to achieve the required hot ...

Page 7: ...Y and S plan systems are shown below 6 1 Wiring Diagrams S Plan Room Thermostat System CH Interlocked by Room Thermostat At least the Radiator s near the Room Thermostat without TRVs Pump runs from Switched Live Y Plan Room Thermostat System CH Interlocked by Room Thermostat At least the Radiator s near the Room Thermostat without TRVs Pump runs from Switched Live Key to colours b Blue br Brown w ...

Page 8: ...re no Pressure Switch fitted Key To Wiring Colours b Blue r Red br Brown g y Green Yellow bk Black FROM TO COLOUR LINK PRESSURE SWITCH PRESSURE SWITCH COMBI ONLY COMBI ONLY COMBI ONLY FLOW TEMP FLOW TEMP RETURN TEMP RETURN TEMP FLOW SENSOR FLOW SENSOR FLOW SENSOR HIGH LIMIT BLACK BLACK BLACK BLACK BLUE RED PSU PSU PSU PSU BLACK BLACK BLACK BLACK BLACK BLACK HIGH LIMIT 1 2 3 4 5 6 7 8 9 10 11 12 13...

Page 9: ...75Ω Fan Max CH Load C1 C2 Y Y 238 243v AC Fan Max HW Load C1 C2 Y Y 263 265v AC 12 1 42 15 1 75 18 2 07 2 73 24 30 3 27 Model m3 hr 6 4 Checking the Operational Working Gas Inlet Pressure Ensure that all controls are calling for heat and maximum load is applied to the system see Chimney Sweep mode see section 7 2 With the boiler operating in the maximum rate condition check that the operational wo...

Page 10: ...control screw A for full load adjustment 5 Check the CO2 is 9 3 0 1 Case OFF If the CO2 is too low turn the screw A anticlockwise to increase 2 5mm Allen key If the CO2 is too high turn the screw A clock wise to decrease Now part load needs to be selected 6 Press the Chimney Sweep button again to return to part load The status signal for the Chimney Sweep button is orange and flashes green briefly...

Page 11: ... green signal Flame loss Shutdown code 4 4 times green signal Communication error Shutdown code 5 5 times green signal Parameter or identification fault Shutdown code 6 6 times green signal Miscellaneous Table of blocking signals Status signals Description Table of Lock out Signals Blocking Temperature protection Blocking input Flame loss Communication error Parameter error Miscellaneous 8 1 2 Loc...

Page 12: ... the wiring Check that the sensors are operating correctly Check that the sensor has been correctly fitted Vent the air in the heating system Check the water pressure Check the cleanliness of the heat exchanger Check the circulation direction pump valves Replace the sensor if necessary Vent the air in the heating system Check the water pressure Check the cleanliness of the heat exchanger Check the...

Page 13: ...hin one hour using the reset button If a more than 5 resets have been carried out the boiler will require a Hard Reset This will be indicated by the Chimney Sweep red and Reset green buttons being illuminated To perform a Hard Reset turn the power of to the boiler for 30 seconds ...

Page 14: ...of the complete flue system and the flue seals by checking air inlet sample to eliminate the possibili ty of recirculation O2 20 6 CO2 0 2 The integrity of the boiler combustion circuit and relevant seals The operational gas inlet pressure and the gas rate The combustion performance as described in Check the Combustion Performance below 3 Competence to carry out Checking Combustion Perfor mance B ...

Page 15: ...ts replacing where necessary Where a seal or gasket is supplied with a spare part it should be used irrespective of the condition of the original Use only original spare parts that are intended for use with this type of boiler When performing any inspection or maintenance personal protective equipment must be used where appropriate Unscrew the two screws located on the lower front panel Slide the ...

Page 16: ...e PCB components disconnect the electrode lead earth lead mains power cable and the main sensor harness from the board Re engage the fan protective cover Disconnect the plug from the gas valve and undo the nut on the gas inlet pipe at the base of the valve Remove the gas assembly from the boiler by releasing the over centre catches that secure it to the heat exchanger Remove the ignition electrode...

Page 17: ...tsarena eu 10 Spare Parts Titanium Heat 10 2 Spare Parts List B C D E F A 17 Sensor Kit Automatic Air Vent Ignition Sensing Electrode Pressure Switch 24 30 only Combustion Control Unit 12 Combustion Control Unit 15 Combustion Control Unit 18 Combustion Control Unit 24 Combustion Control Unit 30 User Interaction Controller 7216301 7216300 7216299 7212522 7664628 7664974 7664991 7665026 7665036 7600...

Page 18: ...11 Notes 18 ...

Page 19: ...11 Notes continued 19 ...

Page 20: ...carefully prepared but we reserve the right to make changes and improvements in our products which may affect the accuracy of the information contained in this leaflet All goods are sold subject to our standard Conditions of Sale which are available on request 7676130 01 01 17 ...

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