■ 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
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
Solar control units
(cont.)
VITOSOL
VIESMANN
37
5822 440 GB
6