Datasheet

Specification
Lead length 3.75 m, fully wired
IP rating IP 32 acc. to EN 60529
ensure through appropriate
design/installation
Sensor type Viessmann NTC 10 kΩ at
25 °C
Permissible ambient temperature
during operation 0 to +90 °C
during storage and transport
20 to +70 °C
Internal extension H1
Part no. 7179 057
The internal extension H1 is part of the standard delivery and is inte-
grated.
Using the extension enables the following functions to be achieved:
Function Rated breaking capacity of the relay output
Connection of an external safety solenoid valve (LPG) 1(0.5) A 250 V~
and one of the following functions (only for Vitodens 333-F, type FR3B):
Connection of a heating circuit pump for a directly connected heating circuit
Connection of a central fault message
Only with Vitotronic 200, type HO1A:
Connection of a DHW circulation pump
2(1) A 250 V~
Specification
Rated voltage 230 V~
Rated frequency 50 Hz
Internal extension H2
Part no. 7179 144
PCB for installation in the control unit, in place of the integral internal
extension H1.
Using the extension enables the following functions to be achieved:
Function Rated breaking capacity of the relay output
External extractor interlock 6(3) A 250 V~
and one of the following functions (only for Vitodens 333-F, type FR3B):
Connection of a heating circuit pump for a directly connected heating circuit
Connection of a central fault message
Only with Vitotronic 200, type HO1A:
Connection of a DHW circulation pump
2(1) A 250 V~
Specification
Rated voltage 230 V~
Rated frequency 50 Hz
Extension AM1
Part no. 7429 152
Function extension inside the casing for wall mounting.
Using the extension enables up to two of the following functions to be achieved:
Function Rated breaking capacity of the relay output
Switching the DHW circulation pump (only with the Vitotronic 200, type HO1A)
Switching the heating circuit pump for a directly connected heating circuit
Switching the circulation pump for cylinder heating (not for boilers with integral DHW cyl-
inder)
every 2(1) A 250 V~
total max. 4 A~
Control units
(cont.)
94
VIESMANN
VITODENS
7
5822 431 GB