9.13 Function extensions
AM1 extension
Part no. 7452092
Function extension inside wall mounting enclosure
Using the extension enables the following functions to be achieved:
■ Cooling via coolant buffer cylinder
or
■ Central fault message
■ Heat transfer to the coolant buffer cylinder
Specification
Rated voltage 230 V~
Rated frequency 50 Hz
Rated current 4 A
Power consumption 4 W
Rated relay output break-
ing capacity
2(1) A, 250 V~ each, total max. 4 A~
Safety category I
IP rating IP 20 D to EN 60529, ensure through
design/installation
Permissible ambient temperature
– Operation 0 to +40 °C
Installation in living spaces or boiler
rooms (standard ambient conditions)
– Storage and transport –20 to +65 °C
EA1 extension
Part no. 7452091
Function extension inside a casing, for wall mounting.
Using the inputs and outputs allows up to 5 functions to be imple-
mented.
1 analogue input (0 to 10 V):
■ Default set flow temperature, secondary circuit.
3 digital inputs:
■ External changeover of the operating state.
■ External demand and blocking.
■ External demand for a minimum heating water temperature.
1 switching output:
■ Swimming pool heating control.
Specification
Rated voltage 230 V~
Rated frequency 50 Hz
Rated current 2 A
Power consumption 4 W
Rated breaking capacity
of the relay output
2(1) A, 250 V~
Safety category I
IP rating IP 20 D to EN 60529, ensure through
design/installation
Permissible ambient temperature
– Operation 0 to +40 °C
Installation in living spaces or boiler
rooms (standard ambient conditions)
– Storage and transport –20 to +65 °C
9.14 Communication technology
Note
For further information on communication technology, see the "Data
communication" technical guide.
Control unit accessories
(cont.)
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VIESMANN
VITOCAL
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