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Function description
DHW tank temperature control
Brief description
The DHW tank temperature control operates with a constant
temperature. It is the result of starting and stopping the
DHW tank pump.
The switching differential is ±2.5K.
During DHW tank heating, a constant upper boiler water
temperature will be set (20 K higher than the set DHW tank
temperature, adjustable via coding address "60") and central
heating is switched OFF (optional DHW tank priority).
Functions
Time program
An automatic program or an individual time program may be
selected for DHW heating and the control of the DHW
re-circulation pump.
Compared with the heating circuit heat-up phase, DHW
heating starts 30 minutes earlier in automatic mode.
The individual time program enables up to four time phases
per day to be set via the time switch to control the DHW
heating and four time phases per day for the DHW
re-circulation pump.
Any DHW tank heating sequence will be completed,
independent of the time program.
In conjunction with coding address "7F"
"7F:1" Detached house:
Automatic mode
The heating times for heating circuit 1 are applied to
systems with two or three heating circuits.
Individual time program
The switching times for DHW heating and the DHW
re-circulation pump have the same effect on all heating
circuits.
"7F:0" Apartment block:
Automatic mode
The heating times for the respective heating circuit will
be applied to systems with two or three heating circuits.
Individual time program
The switching times for DHW heating can be adjusted
separately for each heating circuit.
34
Coding addresses which influence the DHW tank
temperature control
54, 55, 56, 58 to 62, 64, 66, 67,
70 to 75, 7F, A2.
For a description, see the coding overview.
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