EQJW145: Heating controller
Operation
7010015003 A
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© Fr. Sauter AG
4.7.1
Notes on the boosted DHW temperature
The boosted DHW temperature is intended for thermal disinfection of hot
water preparation. The higher temperature should destroy germs (legionella).
To achieve this aim reliably, the return temperature limitation (see SP27) and
power/flow limitation (see SP29ff) functions are not enabled with an
increased DHW temperature.
If a circulating pump (see SP49) is present, it is switched on during the
thermal disinfection.
4.8
Weekly switching programme for domestic hot water
The weekly switching programme repeats itself every week. It comprises a
maximum of 48 switching commands (6 for each day and another 6 for the
whole week) with the associated operating modes which can be entered in a
10-minute grid. The switching commands can be modified individually and
they are captive. A switching command may be valid every day (1-7) or on a
specified day of the week (Mon=1, Tue=2, etc.). If a switching command is
present on a certain day of the week (Mon, Tue, etc) the daily switching
command (1-7) is not valid on that day. An 'empty' switching programme is
interpreted as a switching programme in normal mode.
There are three possible statuses for domestic hot water preparation:
Function
Symbol
No domestic hot water
preparation
STOP
Normal DHW temperature
START
Boosted DHW temperature
START
Tab. 5: statuses for domestic hot water
The factory setting for the weekly programme is:
Day
Time
Mode
Daily
00:00
Normal DHW temperature
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