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Unit 4222-371

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Unit 4222-371
Bosch Group

OIL HEATSLAVE
12/14 15/19 20/25 26/32
CONVENTIONAL FLUE AND ROOM SEALED BF FLOOR STANDING COMBINATION BOILER FOR CENTRAL HEATING AND MAINS FED DOMESTIC HOT WATER

INSTALLATION AND SERVICING INSTRUCTIONS

Worcester supports the Benchmark code of practice

BOILER OUTPUT
Domestic Hot Water and Central Heating 12/14 MINIMUM 12 kW (41,000 Btu/h) MAXIMUM 14 kW (48,000 Btu/h) 15/19 MINIMUM 15 kW (51,000 Btu/h) MAXIMUM 19 kW (65,000 Btu/h) 20/25 MINIMUM 20 kW (68,000 Btu/h) MAXIMUM 25 kW (85,000 Btu/h) 26/32 MINIMUM 26 kW (89,000 Btu/h) MAXIMUM 32 kW (109,000 Btu/h)

THESE INSTRUCTIONS APPLY TO UK MODELS ONLY THESE INSTRUCTIONS ARE TO BE LEFT WITH THE APPLIANCE

Contents
1. 2. 3. 4. 5. 6. 7. 8. 9. Installation Regulations ...........................................Page 2 General Information .................................................Page 2 Technical Data...........................................................Page 4 Siting the Appliance .................................................Page 6 Removal of the Cabinet............................................Page 6 Air Supply..................................................................Page 11 Flue ............................................................................Page 11 Oil Supply ..................................................................Page 15 System Considerations ............................................Page 17

10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21.

Sealed Primary System ............................................Page 18 Open Vent Primary System .....................................Page 19 Domestic Hot Water .................................................Page 20 Electrical ....................................................................Page 21 Functional Flow Charts ............................................Page 24 Installation ................................................................Page 27 Commissioning

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