The grey
side of the
ECL Card
Ex
tended ser
vic
e
32d
Service parameter(s) 16-17
16 Frost protection by DHW circulation pump
Circuit
Setting range
Factory setting
II
ON / OFF
OFF
When the outdoor temperature is lower than 2 °C (frost risk), the
controller automatically switches ON the circulation pump to
protect the system.
ON:
When the outdoor temperature is lower
than 2 °C, the circulation pump is switched
ON.
OFF:
The circulation pump is switched ON and
OFF according to schedule.
17 Influence on desired flow temperature (T
flow.ref(I)
)
Circuit
Setting range
Factory setting
I
OFF / 1 ... 20 K
OFF
The desired flow temperature in heating circuit I can be
influenced by an external reference.
OFF:
The desired flow temperature in circuit I is
not influenced by any other controller (slave
or circuit II).
1 ... 20:
The desired flow temperature is increased
by the set value (line 17), if the demand of a
slave / circuit II is higher.
Temp.
Setting line 17
T
flow.ref(I)
T
flow.ref(II)
Time
Example:
If a slave controller (or circuit II) demands a higher
temperature than that of the master controller
(T
flow.ref(I)
), the temperature of the master will be
increased accordingly (T
flow.ref(II)
) + the setting
(line 17).
The function of line 17 can compensate for heat losses between
master and slave controlled systems.
