Electrical Wiring Diagram - Worcester Greenstar Ri User Manual

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2
1
Mains Supply
1. ST1, Terminal block, 230VAC mains supply.
1a. Control box earth connection.
2. Fuse F1 (T2A, H250V).
3. Boiler mains supply on/off switch.
4. Spark transformer.
5. Flame indicator.
6. ST2, Terminal block for pump & switched live.
7. Transformer connectors.
8. ST5, Fan 230VAC.
9. ST6, Diagnostic interface.
10. Indicator lamp for power supply.
11. ST7, Code plug.
12. S2, Service mode selector switch
13. ST8, No connection.
14. Temperature control and lockout reset.
15. ST9 connector
16. Flame sense electrode,
Pin 1 = green.
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ELECTRICAL WIRING DIAGRAM

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3
8
6
5
1a
17. Primary NTC sensor,
Pin 4 = red, Pin 5 = red.
18. Solenoid valve 1,
Pin 6 = violet, Pin 7 = violet.
19. Solenoid valve 2,
Pin 8 = violet, Pin 9 = violet.
20. Flue overheat sensor,
Pin 11 = orange.
21. High limit stat, (wired in series with flue overheat
sensor & blocked flue protection sensor).
22. Blocked flue protection sensor,
Pin 12 = orange.
10
11
9
12
13
22
21
20
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INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR Ri
ELECTRICAL WIRING DIAGRAM
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8 716 109 699a (05/05)