Chaffoteaux & Maury Centora green 24 Nat, Installation And Operating Instructions Manual

Page 1: ...aneous Domestic Hot Water Fanned Flue system Installation and Operating Instructions Centora green 24 Centora green 30 c Manufactures N Model Type Gas Council N 200906806037 32 Centora green 24 Nat 47 980 21 200906822037 31 Centora green 30 Nat 47 980 24 GB IE ...

Page 2: ...t swithces use the telephone or any other objects that might cause sparks Open doors and windows to ventilate the room Shut the gas mains tap on the gas meter or the valve of the gas cylinder and call your Gas Supplier immediately If you are going away for a long period of time remember to shut the mains gas tap or the gas cylinder valve Before any intervention within the boiler it is first necess...

Page 3: ...Codes of practice BS 7593 BS 5440 parts 1 and 2 BS 5449 BS 7593 BS 6798 BS 5546 BS 7074 BS 7671 and document IGE UP 7 In the Republic the Republic of Ireland the installation should be carried out in accordance with the following codes of practice I S 813 Domestic Gas Installation the following BS Standards give valuable information BS 5546 BS 5449 BS 7074 and BS 7593 The electrical connections mu...

Page 4: ...EE 20 16 PRACTICAL INFORMATION 20 17 GAS CONVERSION 21 18 INCORRECT FUNCTION 21 19 TECHNICAL DATA 22 This instruction booklet is especially designed for appliances installed in the The United Kingdom and The Republic of Ireland INTRODUCTION The CENTORA GREEN is a fully automatic wall mounted low water content condensing combination boiler It is a room sealed fan assisted balanced flued appliance p...

Page 5: ...ng control thermistor 22 Hot water control thermistor 23 Overheat sensor 42 Silencer 1 2 3 4 5 6 8 11 12 13 14 35 30 24 26 27 25 34 28 1 INSTALLER S INSTRUCTIONS 7 Fig 1 Fig 3 15 20 21 10 17 9 Fig 2 33 36 31 32 19 18 22 23 16 29 24 Display 25 Domestic Hot water switch 26 Green indicator Domestic Hot Water mode ON 27 D H W temperature reducing key 28 D H W temperature increasing key DHW mode indica...

Page 6: ...d Maximum water capacity of Central Heating system The expansion vessel is pre charged to 0 7 bar 10 lb in 2 The vessel is suitable for systems up to 145 litres capacity For systems of greater capacity an additional expansion vessel will be required Refer to the chart below and BS 7074 pt 1 or BS 5449 The minimum initial pressure of the system should be over 0 7 bar 1 to 1 5 bar is recommended I S...

Page 7: ...mand including other gas appliances on the same supply Combustion system protection The sulphur level contained in the gas should comply with the européan Standards which are maximum 150 mg m3 for a short period in a year average level of 30 mg m3 during one year Electrical Supply The appliance requires an earthed 230V 50 Hz supply and must be in accordance with current I E E It must also be possi...

Page 8: ...ge safely outside the premises Care should be taken that it does not terminate over an entrance or window or where a discharge of heated water could endanger occupants or passers by The system should be carefully checked for leaks as frequent refilling could cause premature system corrosion or unnecessary scaling of the heat exchanger The pipe from the siphon 12 fig 1 should be connected to a drai...

Page 9: ...ximum wall thickness of 587 mm This takes into account the minimum appliance side clearances of 5 mm If the flue is a side exit installation then calculate the position of the hole with a slope of 5 mm metre towards the boiler from the terminal The flue should rise up slightly to the terminal in order to let the condensate coming back into the boiler Attention Use only specific condensation flue k...

Page 10: ...ng Ensure that the system has been adequately flushed Purge gas supply of air and test for soundness Carry out final electrical tests to ensure the correct polarity and earthing continuity DHW Open the main cold feed valve 40 Open all hot taps to purge DHW system Check for water soundness Check flow rate at the bath tap is set correctly see technical data Central Heating Open flow and return valve...

Page 11: ...s and details of the installation Handing Over to the Householder Demonstrate the lighting and operation of the boiler Demonstrate how to maintain the system pressure Demonstrate the operation and setting of the built in clock Explain the benefits of annual maintenance by a competent person Explain how to register guarantee Ensure the Householder countersigns the Log Book to confirm that these dem...

Page 12: ...section When you are at the first section pressing on key will change for the last section of the menu Setting a parameter in a section Press on setting key key of the heating side to enter in modification mode The 2nd and 3rd digits are flashing Press on or on DHW side to select the correct value then press on Setting key to valid this modification and to get out from setting mode The 2nd and 3rd...

Page 13: ...e conditions or the configurations of the boiler Section Digit 1 Digit 2 and 3 Software version of display PCB 0 10 to 99 Flue type 2 1 FF variable speed Room thermostat is calling for heat 3 0 no 3 1 yes Theoretical position of the 3 way valve 4 0 DHW 4 1 CH DHW flow temperature in Celsius degrees 5 from 00 to 99 CH flow temperature in Celsius degrees 7 from 00 to 99 Software version of main PCB ...

Page 14: ...mostat operation 0 0 Burner only 0 1 Burner and pump Pump speed 1 0 High speed 1 1 Low speed Pump post circulation duration 2 0 0 min From 0 to 5 minutes by step of 0 5 min 2 0 5 min 2 1 0 min 2 5 0 min Maximum Central Heating flow temperature 4 50 C 4 80 C CH anti cycling delay 8 0 0 min From 0 to 7 minutes by step of 0 5 min 8 0 5 min 8 2 5 min 8 5 0 min CH maximum output limitation Model 24 Fro...

Page 15: ...n rate to maximum output set in menu 4 section 9 Central heating temperature is displayed in celsius degrees The 3 dots indicate that the combustion rate control is ON at maximum output X X Switching off the combustion rate control mode press once press once press once press once Effect Display Locking conditions of the combustion rate control mode boiler in stand by mode D H W draw off room therm...

Page 16: ... burner change for section 9 Adjustment of CH heat output Press on key on DHW side times The display shows 906 which corresponds to the 18 kW which is the factory setting for Centora green 24 9 section 9 06 18 kW press on setting key on CH side one time the 2nd and 3rd digits flash together Then press on or key on DHW side to change the C H heat output step between 00 and 10 Press on setting key t...

Page 17: ...ermistor faulty open circuit 10 Domestic Hot Water thermistor faulty short circuit 11 Central Heating thermistor faulty open circuit 12 Central Heating thermistor faulty open circuit 18 Attempt to re light 20 Wiring problem 23 Fan speed too low 24 Fan control system defective 29 Three way valve blocked in CH mode 31 Communication problem with the display PCB 32 Communication problem with the main ...

Page 18: ...mode 31 Key to reduce the Central Heating temperature 32 Key to rise up the Central Heating temperature 33 Green indicator Power ON 34 Orange indicator Burner ON 35 Red indicator Lock out flame failure 36 Reset button 12 Connecting bracket Taps shown in Open position fig 21 37 Central heating flow isolating valve 38 Domestic Hot Water outlet 39 Gas service tap 40 Water service tap 41 Central heati...

Page 19: ...he 3rd digit Switching on the Domestic Hot water Press on key 25 the green indicator 26 will light If there is no water demand the display will show the following graphic In case of draw off a square made of 4 digits will move clockwise on the display Keys 27 and 28 allow to adjust the temperature required for the Domestic Hot Water flow During the temperature setting operation the display will fl...

Page 20: ...crease bellow 4 C the pump and the burner will start 13 15 16 Pump anti sticking device When the boiler is switched on an automatic anti sticking system will switch on the pump for 1 minute and make a movement of the 3 way valve each 23 hours This is a normal functioning Precaution to avoid freezing We recommend you contact your installer or local service centre to take precautions adapted to your...

Page 21: ...of air the system and rise up the system pressure chapter 8 Close the heating flow isolating valve Don t forget to open it again when you will start heating Gas Conversion Incorrect Operation Helpful suggestions Periodically check the system pressure using the pressure gauge and make sure that the pressure is between 1 0 and 1 5 bar when the system is off and cool If the pressure is below the mini...

Page 22: ...old water mains pressures Max operating 10 bar 145 Ib in2 10 bar 145 Ib in2 Flow limiter rate 8 l min 10 l min Compartment ventilation not required not required Natural gas G20 Gas rate C H max 2 64 m3 h 93 ft3 h 3 01 m3 h 106 ft3 h Gas rate DHW max 2 64 m3 h 93 ft3 h 3 01 m3 h 106 ft3 h Gas rate C H DHW mini 0 87 m3 h 31 ft3 h 1 m3 h 35 ft3 h Gas valve restrictor diameter without without Propane ...

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Page 24: ...d in this document Manufacturer Chaffoteaux Maury France Commercial subsidiary MTS GB Limited MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone 01494 755600 Fax 01494 459775 Internet www chaffoteaux co uk E mail info uk mtsgroup com Technical Support Help Line 0870 241 8180 Customer Service Help Desk 0870 600 9888 This appliance is suitable for Natural gas or LPG A gas conversion...