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40 | DHW data
DHW Data
Daily
Heat-up
Fig. 69 Setting range Daily heat-up
B Release Display to save your input.
B Press Back to return to the next higher level.
If the DHW was heated to 60 °C within the last 12 hours,
it is not heated at the specified time.
Input range
Daily Heat-up
inactive
00:00 – 23:00 hours
Table 85 Setting range Daily heat-up
11.11 DHW circulation pump
11.11.1 Selecting the DHW circulation pump
The function DHW circulat. ensures that DHW is immediately available
at the draw-off points.
B Call up the service level.
GENERAL PARAM. appears as the first main menu.
B Turn the rotary dial until main menu DHW appears.
B Press Display to call up a submenu.
B Turn the rotary dial until submenu DHW Circulat. appears.
B Hold down button Display and turn the rotary dial until the required
value is shown.
DHW Data
DHW Circulat.
Fig. 70 Selecting the DHW circulation pump
B Release Display to save your input.
B Press Back to return to the next higher level.
Input range
DHW Circulat.
yes
no
Table 86 Setting range DHW circulation
6 720 802 836 (2012/05)
11.11.2 Setting intervals
Operation in intervals saves operating costs for the circulation pump.
The function DHW circulation per hour ensures that DHW is
immediately available at the draw-off points.
The set interval applies during the period when the time program
enables the DHW circulation pump. This comprises:
• The factory-set DHW circulation pump program
• Your own DHW circulation pump program
• A connection to the heating circuit switching times.
18:00
In constant mode the DHW circulation pump operates continuously
when in day mode, and is switched off in night mode.
Example
6 720 802 836-89.1TL
A proprietary time programme was entered that, within the period of
05:30 hours – 22:00 hours and when setting DHW circulation is
enabled, turns on the circulation pump 2 times per hour.
The circulation pump is enabled in cycles:
• at 05:30 h for 3 minutes
• at 06:00 h for 3 minutes
• at 06:30 h for 3 minutes
• etc., until 22:00 hours
Factory setting
Setting intervals
Inactive
B Call up the service level.
B Turn the rotary dial until main menu DHW appears.
B Press Display to call up a submenu.
B Turn the rotary dial until submenu DHW Circulat. per hour appears.
B Hold down button Display and turn the rotary dial until the required
Fig. 71 Setting intervals
B Release Display to save your input.
B Press Back to return to the next higher level.
DHW Circulat.
no
per hour
6 720 802 836-90.1TL
Factory setting
Table 87 Setting range DHW circulation per hour
yes
GENERAL PARAM. appears as the first main menu.
value is shown.
DHW Data
DHW Circulat.
per hour
Input range
Off
1 time on
2 times on
3 times on
4 times on
5 times on
6 times on
Const. operation
off
6 720 802 836-91.1TL
Factory setting
2 times on
CFB 840
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