Internal Extension H1; Internal Extension H2 - Viessmann VITODENS 300-W Technical Manual

Control units
(cont.)
Collector temperature sensor
For connection inside the appliance.
On-site extension of the connecting lead:
■ 2-core lead, cable length up to 60 m with a cross-section of
1.5 mm 2 (copper)
■ Never route this lead immediately next to 230/400 V cables
Cable length
IP rating
Sensor type
Permissible ambient temperature
– During operation
– During storage and transport
Cylinder temperature sensor
For connection inside the appliance.
On-site extension of the connecting lead:
■ 2-core lead, length max. 60 m with a cross-section of 1.5 mm
per)
■ Never route this lead immediately next to 230/400 V cables
Cable length
IP rating
Sensor type
Rated voltage
Rated frequency
Rated current
Power consumption
Safety category
IP rating
Mode of operation
Permissible ambient temperature
– During operation
– During storage and transport
Rated relay output breaking capacity
– Semi-conductor relay 1
– Relay 2
– Total

Internal extension H1

Part no. 7498 513
Using the extension enables the following functions to be achieved:
Function
– Connection of an external safety solenoid valve (LPG)
And one of the following functions (only for Vitodens 200-W and 300-W):
– Connection of a heating circuit pump (multi stage) for a directly connected heating circuit
7
– Connection of a central fault message
– Connection of a circulation pump for cylinder heating
– Only with Vitotronic 200, type HO1B:
Connection of a DHW circulation pump
Specification
Rated voltage 230 V~
Rated frequency 50 Hz

Internal extension H2

Part no. 7498 514
VIESMANN
96
Permissible ambient temperature
– During operation
– During storage and transport
For systems with Viessmann DHW cylinders, the cylinder temperature
sensor is installed in the threaded elbow (standard delivery or acces-
sory for the respective DHW cylinder) in the heating water return.
2.5 m
Specification
IP 32 to EN 60529, ensure
through design/installation
Viessmann NTC 20 kΩ, at
25 °C
−20 to +200 °C
−20 to +70 °C
2
(cop-
3.75 m
IP 32 to EN 60529, ensure
through design/installation
Viessmann NTC 10 kΩ, at
25 °C
230 V~
50 Hz
2 A
1.5 W
I
IP 20 to EN 60529, ensure through design/installation
Type 1B to EN 60730-1
0 to +40 °C use in the living space or boiler room (standard ambient
conditions)
−20 to +65 °C
1 (1) A, 230 V~
1 (1) A, 230 V~
max. 2 A
PCB for installation in the control unit.
PCB for installation in the control unit.
0
1 8
5 8
Rated breaking capacity of the relay output
0 to +90 °C
−20 to +70 °C
1(0.5) A 250 V~
2(1) A 250 V~
VITODENS