Screed Drying - Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors

Control functions
(cont.)

Screed drying

When enabling screed drying, observe the information
provided by the screed manufacturer.
When screed drying is activated, the heating circuit
pumps of all heating circuits are switched on and the
flow temperature is maintained at the set profile. After
completion (30 days), the heating circuits with mixer
are automatically controlled with the set parameters.
Note
During screed drying, DHW heating is not available.
Observe EN 1264. The report to be provided by the
heating contractor must contain the following details
regarding heat-up:
Heat-up data with the relevant set flow temperatures
■
■ Max. flow temperature achieved.
■ Operating state and outside temperature at handover
Parameter 897.0 "Screed drying":
Temperature profile 1 (EN 1264-4)
50
40
30
20
10
1 5 10
Fig. 107
Temperature profile 2 (ZV parquet and flooring technology)
50
40
30
20
10
1 5 10
Fig. 108
Temperature profile 3
50
40
30
20
10
1 5 10
Fig. 109
15 20 25 30
Days
15 20 25 30
Days
15 20 25 30
Days
Different temperature profiles can be set via parameter
897.0.
Note
Temperature profile 6 ends after 21 days.
The function continues after a power failure or after the
control unit has been switched off. When screed drying
has completed or been manually switched off, the sys-
tem is regulated in accordance with the selected
parameters.
Function description
151