INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32 8 716 106 252b (07/06ELECTRICAL

MAINS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONNECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

X1 (PIN 5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

LOCKOUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BOILER MODE

 

 

 

 

 

 

 

 

 

INDICATOR

 

 

 

 

X1 (PIN 6)

INDICATOR

 

 

 

 

 

 

 

 

X11 (PIN 2)

X11 (PIN 3)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1

X12 (PIN 3)

 

 

 

 

 

X9 (PIN 1)

X9 (PIN 2)

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X7 (PIN 1)

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

X3 (PIN 3 (L))

white

brown

 

X7 (PIN 4)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FROST THERMOSTATS

 

 

 

 

 

 

4

 

 

 

X7 (PIN 3)

PUMP

 

 

 

 

 

 

 

 

 

 

 

 

brown

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X2 (FR)

 

RELAY 1

 

 

 

 

 

3

 

 

 

N

 

X8 (PIN 6)

 

 

 

X2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODE

X2 (FR)

 

4

 

 

 

 

 

 

 

 

 

 

 

MOTORISED

 

(FS)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X8 (PIN 3)

 

 

SWITCH

PROGRAMMER

 

1

X8 (PIN 5)

 

 

X8 (PIN 2)

N RELAY 2

 

 

brown

 

DIVERTER

 

 

 

X2

 

 

 

 

 

 

 

VALVE X8 (PIN 4)

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

X1 (PIN 1)

CH

grey

(NS)

orange

 

 

grey

 

 

 

 

 

 

 

 

 

 

N

 

DIVERTER

 

4

 

 

 

LOCKOUT

 

 

 

brown

X4 (PIN 1)

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X2

 

END SWITCH

 

3

 

 

 

RESET SWITCH

N

 

 

X4 (PIN 3)

white

(LS)

X2

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

SERVICE

DHW

X4 (PIN 2)

 

(LR)

 

 

 

 

 

 

 

 

white

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

CONNECTION

 

 

LINK

 

 

 

 

 

 

 

 

grey

 

grey

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FUSE F1

 

 

(REMOVE)

 

X10 (PIN 3)

 

 

X10 (PIN 1)

 

 

 

 

4

BURNER

 

 

 

 

ROOM

 

 

 

 

 

X12 (PIN 4)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.15A

 

 

 

white

3

2

white

 

 

 

 

 

 

2

 

 

 

 

 

THERMOSTAT

N

 

 

 

 

 

red

 

 

 

FAST

 

 

DHW CONTROL

RELAY

X13 (PIN 1)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CERAMIC

 

 

 

 

THERMOSTAT

3

N

 

yellow

 

PLUG IN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

CONNECTOR

 

 

 

 

 

 

 

 

 

 

 

 

X13 (PIN 3)

2

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

pink

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 (C)

 

CENTRAL HEATING

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X13 (PIN 2)

 

 

CONTROL THERMOSTAT

 

 

 

 

 

 

X6 (PIN 2)

 

 

X6 (PIN 4)

 

 

orange

orange

 

 

 

 

 

X1 (PIN 3)

 

 

 

 

 

 

 

 

RELAY

(C) 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

brown

 

 

blue

 

 

4

 

AUTO RESET HIGH LIMIT

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

WATER FLOW

 

 

 

 

THERMOSTAT

 

 

 

 

 

 

 

R1 C1 N

NO

2

NC

 

 

 

C1

 

 

 

SWITCH

 

 

red

 

 

 

 

N

 

 

 

 

MANUAL RESET BOILER

 

 

 

 

 

 

 

 

OVERHEAT THERMOSTAT

 

X13 (PIN 5)

grey

 

 

 

 

 

red

 

 

 

 

 

X3 (PIN 3)

 

 

 

 

MANUAL RESET FLUE

 

 

 

 

 

 

 

 

 

OVERHEAT THERMOSTAT

 

 

 

 

 

ELECTRICAL

X8 (PIN 1)

red

SCHEMATIC

48

LIVE SUPPLY FOR ALTERNATIVE DIVERTER VALVE

FAULT FINDING

& DIAGRAMS

SCHEMATIC

Page 49
Image 49
Bosch Appliances 25/32kW, 18/25, 12/18 instruction manual Electrical, Schematic

25/32kW, 12/18, 18/25 specifications

Bosch Appliances has carved out a reputation for engineering high-performance heating solutions, particularly with their range of heating systems including the 18/25, 12/18, and 25/32 kW models. These systems are designed to meet the diverse needs of residential and commercial spaces while maintaining energy efficiency and sustainability.

The Bosch 18/25 kW model excels in providing an optimal heating solution for medium to large residential properties. It is equipped with a highly efficient condensing boiler that extracts additional heat from flue gases, achieving significant energy savings. The built-in, user-friendly interface allows for easy programming and monitoring, which maximizes user convenience.

The 12/18 kW model provides a versatile opportunity for smaller homes or apartments. Its compact design ensures that it fits seamlessly into tighter spaces without sacrificing performance. The unit operates quietly, making it an excellent choice for residential areas where noise can be a concern. Additionally, it features the latest modulation technology, optimizing energy usage and maintaining consistent temperatures.

Finally, the 25/32 kW model is ideal for larger installations, offering robust performance even in high-demand scenarios. This model benefits from advanced heating management systems that enable intelligent control of heating zones, ensuring efficiency and comfort throughout the property. With its enhanced energy rating, the 25/32 kW model significantly reduces the carbon footprint, aligning with modern sustainability goals.

Across the board, Bosch Appliances integrates advanced technologies such as intelligent diagnostics, smart home compatibility, and eco-friendly materials. All models are constructed with durability in mind, featuring corrosion-resistant heat exchangers and high-quality components designed for longevity.

The customer-focused features, including comprehensive warranty packages and responsive customer service, further exemplify Bosch's commitment to quality. Overall, Bosch Appliances 18/25, 12/18, and 25/32 kW heating systems stand out for their innovative technology, efficient performance, and reliability, making them an excellent choice for those looking to upgrade their heating solutions.