Bosch WORCESTER GREENSTAR WIRING CENTRE, Installation, Commissioning & Servicing Instructions

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CONTENTS
6 720 804 107 (2012/10) 2
CONTENTS
1 Key to symbols and safety instructions . . . . . . . . . . . . . . . . . . . 2
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Product details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1 Correct use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Standard delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.4 Cleaning and care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.5 Additional system components . . . . . . . . . . . . . . . . . . . . 4
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2.1 Connection of BUS and temperature sensor (

24 V) . . 5
3.2.2 Connection to mains power, pump and
valves (230 V AC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2.3 Wiring diagrams with system examples . . . . . . . . . . . . . . 8
4 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1 Status indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2 Replacing the fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 Environment / disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1 KEY TO SYMBOLS AND SAFETY
INSTRUCTIONS
1.1 KEY TO SYMBOLS
WARNINGS
The following keywords are defined and can be used in this document:
•
NOTE indicates a situation that could result in damage to property or
equipment.
• CAUTION indicates a situation that could result in minor to medium
injury.
• WARNING indicates a situation that could result in severe injury or
death.
• DANGER indicates a situation that will result in severe injury or death.
IMPORTANT INFORMATION
ADDITIONAL SYMBOLS
1.2 SAFETY INSTRUCTIONS
▶ Observe all country-specific regulations and standards during
installation and operation.
▶ Observe all instructions to ensure satisfactory operation.
▶ This product must only be installed and commissioned by a
competent person.
▶ Never install this product in wet rooms.
▶ Install and commission the boiler and other accessories according to
the relevant instructions.
▶ Risk of scalding! A mixer device must be installed if water
temperatures higher than 60 °C are set.
▶ Use this product exclusively in conjunction with the Worcester
controls accessory and boilers that comply with the intended use.
Follow the wiring diagram.
▶ The product requires different voltages.
Do not connect the low-voltage equipment to 230 V mains and vice-
versa.
▶ Before installing the product: electrically isolate the boiler and system
components. Secure against unintentional reconnection and make
sure the power supply is disconnected.
ABOUT THESE INSTRUCTIONS
These installation instructions contain important information regarding
the safe and proper installation, commissioning and maintenance of the
product.
These installation instructions are intended for competent persons who,
as a result of their training and experience, are skilled in dealing with
electrical installations and heating systems.
In these instructions the Greenstar Wiring Center will be referred as
“module”.
2 PRODUCT DETAILS
• The module controls the pump and motorized valves in
– a mid-position (Y-plan) system
-or-
– a two-port valve (S-plan) system
-or-
– three central heating circuits only, without electronic mixing valves
-or-
– two central heating circuits without electronic mixing valves and
one domestic hot water cylinder circuit.
• The module collects
– the temperature of the DHW cylinder via the cylinder temperature
sensor supplied
– the demand signals (from room and/or frost thermostats
optionally).
Warnings in this document are identified by a warning
triangle printed against a grey background.
Keywords at the start of a warning indicate the type and
seriousness of the ensuing risk if measures to prevent
the risk are not taken.
This symbol indicates important information where
there is no risk to people or property.
Symbol Explanation
▶ Step in an action sequence

Cross-reference to another part of the document
• List entry
– List entry (second level)
Table 1
NOTICE:
Floor damage!
▶ Underfloor heating installations must include a
suitable controls package to prevent excessive flow
temperatures entering the floor.