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5.6
Advanced functions for DHW
To be able to use the advanced functions, the Auto operating mode must
be set.
In order to be able to adjust the DHW functions:
▶ Select DHW.
▶ Tap
symbol.
The field containing the advanced functions opens.
▶ Change the setting.
To close the display field:
▶ Tap
symbol.
1
2
12 11 10
9
Fig. 24 Advanced functions for DHW
[1]
Switch-on frequency per hour
[2]
Circulation time program
[3]
Auto
[4]
Interval
[5]
Program setting
[6]
Twice on
[7]
Off
[8]
Calendar
[9]
On
[10] Holiday
[11] Thermal disinfection
[12] Once-only cylinder charging
5.6.1
DHW circulation pump submenu
The DHW circulation pump provides a more or less instantaneous supply
of DHW to the draw-off points. The DHW circulation pump circulates the
DHW via a separate DHW circulation line several times an hour.
Setting intervals
Intermittent operation can reduce the operating costs of the DHW
circulation pump. In the Switch-on frequency per hour function you
can select how often the DHW circulation pump runs for 3 minutes every
hour.
The set interval applies during that time in which the time program
enables the DHW circulation pump. This includes:
• The factory-set time program for the DHW circulation pumps
• The dedicated time program
During continuous operation, the DHW circulation pump operates
continuously in heating mode, and is switched off in setback mode.
To make the setting go to Domestic hot water > Advanced functions
( Chapter 4.3, page 17).
Control 8311/8313 – 6720859790 (2020/02)
6
3 4
5
60°C
12:00
8
00010025812-001
Information on the standard functions and the advanced functions
Example:
A time program was selected or a dedicated time program was set that
switches the DHW circulation pump on between 05:30 and 22:00 with
the setting Switch-on frequency per hour > Twice on .
The DHW circulation pump is enabled cyclically:
• At 05:30 o'clock for 3 minutes
• At 06:00 o'clock for 3 minutes
• At 06:30 o'clock for 3 minutes
• And so on until...22:00 o'clock
5.6.2
Once-only cylinder charging
If the DHW demand rises significantly outside the programmed periods,
the cylinder can be charged once.
To heat a larger quantity of hot water outside the period defined in the
time program:
▶ Tap the field Once-only cylinder charging > On.
Once-only DHW heating starts.
Once-only cylinder charging is not possible via a connected remote
7
control.
5.7
Thermal disinfection
If Thermal disinfection is to be carried out outside the programmed
times, this can be started manually once.
To start the Thermal disinfection outside the period defined in the time
program:
▶ Tap the field Thermal disinfection On.
The prompt Start thermal disinfection now? appears.
▶ Tap Yes.
The Thermal disinfection is started.
5.8
Holiday function
sec. 5.3.1, page 19
21
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