Internal extension H2
Part no. 7179 144
Electronic PCB for installation into the control unit, in place of the
integral internal extension H1.
An external extractor interlock can be connected with the internal
extension H2.
Where that function is selected, no external safety solenoid valve
can be connected.
Specification
Rated breaking capacity of the
relay output
6(3) A 250 V~
Rated voltage
230 V ~
Rated frequency
50 Hz
External extension H1
Part no. 7179 058
Function extension inside a casing for wall mounting.
Using the extension enables the following functions to be achieved:
Function
Rated breaking capacity of the relay output
Connection of a central fault message
0.4(0.2) A 250 V~
–
Connection of a heating circuit pump (stepped) for a directly connected heating cir-
cuit
2(1) A 250 V~
–
Minimum boiler water temperature demand
–
External blocking
–
Set boiler water temperature defaulted via a 0 - 10 V input
–
Only with the Vitotronic 200, type HO1:
External heating program changeover
Specification
Rated voltage
230 V ~
Rated frequency
50 Hz
Rated current
4 A
Power consumption
4 W
Protection class
I
Protection
IP 32
Permissible ambient temperature
–
during operation
0 to +40 °C
Installation in living spaces
or boiler rooms
(standard ambient condi-
tions)
–
during storage and transport
-20 to +65 °C
External extension H2
Part no. 7179 265
Function extension inside a casing for wall mounting.
Using the extension enables the following functions to be
achieved:
&
Minimum boiler water temperature demand
&
External blocking
&
Only with the Vitotronic 200, type HO1:
External heating program changeover
Specification
Rated voltage
230 V ~
Rated frequency
50 Hz
Rated current
2 A
Power consumption
3 W
Protection class
I
Protection
IP 32
Permissible ambient temperature
–
during operation
0 to +40 °C
Installation in living spaces
or boiler rooms
(standard ambient condi-
tions)
–
during storage and transport
-20 to +65 °C
5822
335-1
G
B
VITOPEND 222
VIESMANN
27
Accessories for the Vitotronic 200, type HO1
(cont.)