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■ For DHW circulation diversion in systems with 2 DHW cylinders
■ For return changeover between the boiler and the heating water
buffer cylinder
■ For heating additional consumers
■ For a heat statement (return temperature is captured)
On-site extension of the connecting lead:
■ 2-core lead, length up to 60 m with a cross-section of 1.5 mm
2
(copper)
■ Never route this cable immediately next to 230/400 V cables.
Specification
Lead length
3.8 m
IP rating
IP 32 to EN 60529; en-
sure through design/
installation
Sensor type
Viessmann NTC 10 kΩ,
at 25 °C
Permissible ambient temperature
– Operation
0 to +90 °C
– Storage and transport
−20 to +70 °C
Collector temperature sensor
Part no. 7831 913
Immersion temperature sensor for installation in the solar collector
■ For systems with 2 collector arrays
■ For heat statement (recording flow temperature)
On-site extension of the connecting lead:
■ 2-core lead, 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.
Specification
Lead length
2.5 m
IP rating
IP 32 to EN 60529; ensure through de-
sign/installation
Sensor type
Viessmann NTC 20 kΩ at 25 °C
Permissible ambient temperature
– Operation
−20 to +200 °C
– Storage and transport
−20 to +70 °C
Stainless steel sensor well
Part no. 7819 693
SW24
200
R½
For temperature controllers and temperature sensors.
Part of the standard delivery of the Viessmann DHW cylinders.
Heat meter
Components:
■ 2 sensor wells
■ Flow meter with connection fitting to capture the flow rate of
water:glycol mixtures (Viessmann heat transfer medium "Tyfo-
cor LS" with 45 % glycol volume ratio):
Heat meter
06
Part no. 7418 206
15
Part no. 7418 207
25
Part no. 7418 208
35
Part no. 7418 209
60
Part no. 7418 210
a
90
108
260
116
159
168
Solar control units
(cont.)
VITOSOL
VIESMANN
37
5822 440 GB
6