111
After the draw-off process has ended, the loading cyl-
inder continues to be heated up until the set DHW tem-
perature is reached at the cylinder temperature sensor.
Increased DHW hygiene
The DHW can be heated to a specified (higher) set
DHW temperature (approx. 65 °C) for a period of one
hour.
Danger
Risk of injury due to increased DHW tempera-
ture.
Inform the system user of the risk from the
raised outlet temperature at the draw-off points.
If required, provide on-site scald protection
measures.
External heating circuit hook-up (if installed)
Note
Only in conjunction with weather-compensated opera-
tion.
■
Function:
–
If the external demand is active (plug 96 or digital
input on DIO electronics module closed), the heat-
ing circuit is supplied with heat.
–
If the external demand is inactive (contact open),
heat supply to the heating circuit ends (regardless
of the current set room temperature or the switch-
ing time).
The following status messages are shown on the
display of the control unit:
–
S.94 (heating circuit 1)
–
S.95 (heating circuit 2)
–
S.96 (heating circuit 3)
!
Please note
There is no frost protection for the connec-
ted heating circuits.
■
Connection:
–
If just one heating circuit is hooked up, use con-
nection at plug 96: See page 22.
–
If several heating circuits (max. 3) are hooked up,
connect all contacts at EM-EA1 extension (DIO
electronics module) to subscriber no. 1 (rotary
switch = 1).
See EM-EA1 extension installation instruc-
tions
Function description
DHW heating (cont.)
6151778
Functions
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