Product Information
GREENSTAR WIRING CENTRE – 6720880441 (2018/01)
3
H Intended use
The module communicates via an EMS 2 interface
with other EMS 2-enabled BUS nodes, such as
Greenstar boilers.
Any other use is considered inappropriate. We accept
no liability for damage caused through incorrect use.
H Installation, commissioning and maintenance
Installation, commissioning and maintenance must
only be carried out by a competent person.
▶ Never install the product in wet rooms.
▶ Only use genuine spare parts.
H Electrical work
Electrical work must only be carried out by a qualified
electrician.
▶ Before starting electrical work:
– Isolate all poles of the mains power supply and
secure against reconnection.
– Make sure the mains voltage is disconnected.
▶ The product requires different voltages.
Do not connect the extra-low voltage side to the
mains voltage or vice versa.
▶ Also observe the connection diagrams of other
system components.
H Handover to the user
When handing over, instruct the user how to operate
the heating system and inform the user about its
operating conditions.
▶ Explain how to operate the heating system and draw
the user's attention to any safety relevant action
▶ Explain that conversions and repairs must only be
carried out by a competent person.
▶ Point out the need for inspections and maintenance
for safe and environmentally-compatible operation.
▶ Leave the installation instructions and the
operating instructions with the user for
safekeeping.
H Damage caused by frost
The solar system can freeze if it is switched off:
▶ Observe the notices regarding frost protection.
▶ Due to the additional functions, e.g. DHW heating or
anti-seizing function, the system should always be
left on.
▶ Correct any faults immediately.
2 Product Information
In these instructions, the Greenstar Wiring Centre will be referred to as
the module.
• The module controls the pump and motorised valves in
– a 3-way valve (Y-plan) system
-or-
– a two-port valve (S-plan) system
-or-
– 3 heating circuits without electronic mixing valves
-or-
– 2 heating circuits without electronic mixing valves and cylinder
charging circuits (S-plan Plus), with 2x Comfort II RF
programmable room thermostats for load compensation
• The module collects
– the temperature of the DHW cylinder via the cylinder temperature
sensor supplied
– the demand signals (from room and/or frost stats optionally)
• Pump seizure protection function:
– The connected pump is monitored and automatically operated for
a short time after being idle for 24 hours. This prevents the pump
from seizing.
The coding switch has a factory setting of Y. The module will therefore
operate the system as a 3-way valve (Y-plan) system. S (S-plan) or other
configurations can be selected when necessary.
2.1 Important notices on use
WARNING:
Risk of scalding!
▶ If DHW temperatures are set above 60 °C or thermal disinfection is
engaged (where temperature switch II is temporarily over 60 °C), a
mixer must be installed.
NOTICE:
Floor damage!
▶ If the product is used in a heating circuit with an underfloor heating
system, it must only be operated in conjunction with an additional
temperature switch.
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