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UK/IE

INSTALLATION INSTRUCTIONS

WALL HUNG RSF GAS FIRED CONDENSING BOILER

GREENSTAR i SYSTEM OPTIONAL INTEGRAL 
DIVERTER VALVE

6720645222-00.2W

o

FOR SEALED CENTRAL HEATING SYSTEMS AND INDIRECTLY MAINS FED DOMESTIC HOT WATER

6 72

0 645 222 (2012/09)

Diverter valve kit numbers

12kW

7 716 192 566

15kW

7 716 192 567

18kW

7 716 192 568

24kW

7 716 192 409

Diverter valve kits contain:

1

Copper return pipe

1

Brass service valve

1

15mm Compression nut

1

15mm Olive

1

Diverter valve motor and cover

1

Cylinder temperature sensor and lead

2

Screws

2

Code  plugs

1

Code  plug  tie

The appliance is for use with Natural Gas or
L.P.G. (Cat II 2H3P type C13, C33 & C53)

Model

GC Number

Natural Gas

12i System

41-311-67

15i System

41-311-84

18i System

41-311-86

24i System

41-311-68

LPG
(Liquid 
Petroleum Gas)

12i System

41-311-69

15i System

41-311-85

18i System

41-311-87

24i System

41-311-70

Read these instruction in conjunction with the
i System Installation, Commissioning 
and Servicing instruction manual

Summary of Contents for Worcester 7 716 192 566

Page 1: ...n pipe 1 Brass service valve 1 15mm Compression nut 1 15mm Olive 1 Diverter valve motor and cover 1 Cylinder temperature sensor and lead 2 Screws 2 Code plugs 1 Code plug tie The appliance is for use with Natural Gas or L P G Cat II 2H3P type C13 C33 C53 Model GC Number Natural Gas 12i System 41 311 67 15i System 41 311 84 18i System 41 311 86 24i System 41 311 68 LPG Liquid Petroleum Gas 12i Syst...

Page 2: ...llation Commissioning and Service instructions for Safety precautions and British standards Safety instructions in this document are framed and identified by a warning triangle which is printed on a grey background Important information in cases where there is no risk of personal injury or material losses is identified by the symbol shown on the left It is bordered by horizontal lines above and be...

Page 3: ...TICE Fitting the service valve Refer to figure 2 Theservicevalve 7 from theOptionalDiverter Valve Kit must be fitted and secured to the wall mounting frame with two screws 8 supplied before the wall mounting frame is fitted to the wall Further guidance on pipe routing can be found printed on the boiler template supplied with the boiler 1 2 3 4 5 6 6720645222 12 1Wo Function From left case edge Dia...

Page 4: ...from the flange on theclamping plate Make sure that the other brass bung assembly is retained in place 3 Remove the copper pipe from the Optional Integral Diverter Valve Kit and feed the flat end of the pipe through the rear of the boiler as shown 4 Before fitting the pipe check that the seal is in position on the plastic moulding Slide the flat end of the pipe under the flange on the hydraulicblo...

Page 5: ...the lever on the pressure relief connector UP until the stop on the inside of the handle is over the shoulder of the metal bracket to secure in place Fig 7 PRV in the up position Remove the screw from the control panel retaining bracket and lower the control panel into the service position Make connections to the heating system and cylinder Connect the gas supply to the boiler gas cock 22mm compre...

Page 6: ...d in the literature hardware pack 4 FITTING THE DIVERTER VALVE MOTOR AND CODE PLUG 4 1 FITTING THE DIVERTER VALVE MOTOR 1 Remove the diverter valve blanking plate by pulling it forwards to free it from its location Fig 10 Removing Diverter valve blanking plate 1 To fit the diverter valve motor push the motor into the housing until the motor clicks securely into place ensuring that the actuator arm...

Page 7: ...cut through the insulation remove and retain the piece of insulation 2 Applyheatconductivepastetothesensorandplacethesensoronthe cylinder body in the middle of the cut out 3 Hold the sensor in position with a piece of aluminium tape 4 Replace the insulation material 5 Secure the insulation in place with suitable cloth tape Fig 15 Sensor connection to cylinder 5 1 2 FITTING THE CYLINDER THERMOSTAT ...

Page 8: ...nnect frost stat wires to terminal FS and FR 6 Diverter valve motor Connect the Diverter valve motor harness to the Diverter valve motor connection refer to the circuit diagram in section 6 4 Fig 18 NOTICE Cable routing Do not route low voltage cables alongside mains voltage cables This can cause interference on the low voltage cables If the ST15 connector and sensor is being used do not connect S...

Page 9: ...stat must be connected to terminals 7 and 9 Any factory fitted links within the dual thermostat must be removed The safety limit thermostat must be wired to interrupt the mains 230 Volt supply to the boiler terminal S10 Fig 20 Unvented cylinder with DHW thermostat NOTICE Programmers Timers Ifanyoftheprogrammers timerslistedinthenoticeat beginning of chapter 6 are used the room thermostat is incorp...

Page 10: ...cylinder stat ST10 Mains in external controls connections ST18 Code plug ST19 EMS BUS connection NOTICE RESET THE CONTROL BOARD Following changes to the wiring of ST15 and ST8 the control board will need to be reset to recognise the new connection The power must be on to reset all lights will flash to confirm reset To reset the control board HoldtheServicemode Spanner andtheEcobuttons down for at ...

Page 11: ...der blanking cover on fascia Live Supply Live Return Neutral Live Orange Blue Yellow Green Black Colour sequence Purple Purple Red Red Orange Orange Colour sequence PRE WIRED LINK EMS BUS contacts for FX controls Outside sensor FW 100 B B 4 2 1 A F Wall plate contacts for FX controls B B EXTERNAL FROST STAT OPTIONAL ST15 Optional cylinder temperature sensor FLAME SENSE ELECTRODE SPARK ELECTRODES O...

Page 12: ...nd 9 on the terminal block ST8 Fit link across 7 and 9 If the HW now functions the problem may be with the cylinder thermostat or wiring to the thermostat FOR ALL BOILERS WITH INTERNAL OR EXTERNAL CONTROLS Burner lights then goes out in DHW or CH mode Does the boiler run normally with the front cover off and then fail when the cover is put back on If yes there is likely to be a flue problem either...

Page 13: ...isation period Fan modulation to achieve set temperature 40 82 C END OF BOILER DEMAND Gas valve OFF Pump run 3 minutes Fan run 30 seconds Over temperature shut down if water tempera ture is 5 C above set value Gas valve OFF Fan overrun 30 seconds 3 minute pump over run Spark ignition and gas 4 seconds NO YES Room thermostat and or mains programmer ON or link fitted at ST10 AND Facia mounted progra...

Page 14: ...overrun period Internal boiler temperature rises above 12 C Central heating demand switches off Pump switches off after a 3 minute overrun period Central heating demand is activated Pump runs for 3 minutes to dissipate heat from the boiler into the system End of boiler demand central heating or domestic hot water AUTOMATIC INTERNAL FROST FUNCTION PUMP OVERRUN FUNCTION A central heating demand acti...

Page 15: ...i System Diverter Valve kit 6 720 645 222 2012 09 15 NOTES ...

Page 16: ... Worcester Bosch Group is a brand name of Bosch Thermotechnology Ltd worcester bosch co uk 6 720 645 222 2012 09 WORCESTER BOSCH GROUP TECHNICAL SUPPORT 0844 892 3366 APPOINTMENTS 0844 892 3000 SPARES 01905 752571 LITERATURE 0844 892 9800 TRAINING 01905 752526 SALES 01905 752640 ...

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