145
Filling the secondary circuit with the Vitotronic
control unit switched on
If the system is to be filled with the control unit
switched on, the diverter valve is moved in the filling
program to its central position and the pump is started.
When the function is enabled, the burner shuts down.
The program is automatically disabled after approx.
30 min.
Venting program for the secondary circuit
During the venting program, the circulation pump is
alternately switched on and off for 30 s at a time over a
period of approx. 30 min.
The diverter valve alternates between heating and
DHW heating for a given time. The burner is switched
off during the venting program.
To activate the venting program: see "Venting the heat-
ing system".
Screed drying
When enabling screed drying, observe the information
provided by the screed manufacturer.
When screed drying is enabled, the heating circuit
pump for the heating circuit with mixer starts and the
flow temperature is maintained in accordance with the
selected profile. On completion (30 days), the heating
circuit with mixer is regulated automatically according
to the set parameters.
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 flow temperatures
■
Max. flow temperature achieved
■
Operating state and outside temperature during
handover
Various temperature profiles can be set via coding
address "F1" in the
"Heating circuit"
group.
The function continues after a power failure or after the
control unit has been switched off. "Heating and DHW"
is started when screed drying is finished or if code
"F1:0" is set manually.
Temperature profile 1: (EN 1264-4) code "F1:1"
Flow temperature
°C
1
5
10
15
20
25
30
Days
50
40
30
20
10
Fig. 89
Temperature profile 2: (ZV parquet and flooring technology) code "F1:2"
Flow temperature
°C
Days
50
40
30
20
10
1
5
10
15
20
25
30
Fig. 90
Function description
Control functions
(cont.)
5678 044 GB
Functions
Summary of Contents for D2RA
Page 113: ...113 Maintenance Checking the Vitotronic 200 H accessories cont 5678 044 GB Maintenance ...
Page 133: ...133 Parts lists Sorption module hydraulics cont 5678 044 GB Components ...
Page 136: ...136 0001 0002 0003 0004 0005 Fig 83 Parts lists Miscellaneous 5678 044 GB Components ...
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