Viessmann VIESMANN VITOLIGNO 300-H Technical Manual page 24

Ecotronic control unit for Vitoligno 300-H
DHW heating temperature sensor (DHW heating controller)
Part no. 7528 122
T
3
A Pump
B Control valve
C Pt1000 temperature sensor
D Contact temperature sensor
Long-distance heat line (sub-distributor)
A Sub-distributor
B Bypass
C Contact temperature sensor
D Pump
E Control valve
Adjacent building
The line to the adjacent building is controlled with weather compen-
sation via the heating circuit control unit.
VIESMANN
24
(cont.)
When the temperature at the cylinder temperature sensor falls below
the set value, the circulation pump for cylinder heating starts and the
DHW cylinder is heated.
The flow rate of the heating water is controlled via the return temper-
ature (flow control). This results in optimum stratification of the buffer
cylinder with sustained high temperature at the cylinder flow. The
heating periods (individual day and seven-day program) can be adjus-
ted via the integrated time switch.
Standard delivery
■ Pt1000 temperature sensor (7 6 mm, L = 2000 mm) with sensor
well
Note
The standard delivery does not include positions A and B.
Via a long-distance heat line, a building is supplied with separate heat
distribution. The long-distance line is controlled upstream according to
the demand of the heating circuits. The heating circuits of the separate
heat distribution must be controlled via the Vitotrol 350.
Note
The contact temperature sensor C is part of the standard delivery of
the controller module.
Note
The long-distance heat line can only be used if Köb extensions are
also being used in the sub-distributor.
An adjacent building line (long-distance heat line) can be implemented
using a controller module for the adjacent building and the required
controllers.
VITOLIGNO 300-H