sauter Equitherm EQJW 125, Руководство пользователя

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EQJW 125: Heating controller
Commissioning
7001029003 A
© Fr. Sauter Ltd.
23
Design temperature
If the current outdoor temperature is less than the design temperature, the
EQJW 125 heating controller will no longer switch to reduced operating mode
but will remain in normal operating mode.
Anti-frost
The anti-frost function becomes active if the outdoor temperature falls below
the anti-frost limit (= +3°C). If the outdoor temperature rises above 4°C again,
the function is ended. The flashing
symbol indicates that the anti-frost
function is active. It forces the circulating pump for the heating circuit to
switch on. The setpoint for the flow temperature of the heating circuit is set at
+10°C unless it is already higher. In addition, regardless of the outdoor
temperature, temperature TF (flow sensor) is monitored to a limit value of
5°C. If SP20=0, the function can be disabled and the controller will no longer
offer an anti-frost function in this case!
Anti-jamming function for the pump
If this function is enabled, a daily check is carried out (at 0.00 hours) to
determine whether the pump was operated in the last 24 hours. If not, it is
operated for one minute to prevent jamming.
Calendar switching programme
This SERVice parameter is used to either enable or disable the calendar
switching programme. Only when the calendar switching programme is
enabled can calendar switching commands be entered. If the parameter has
a value of 1, the calendar switching programme is enabled; if it has a value of
0, it is disabled. The factory setting for this parameter is 1.
Summer/winter or winter/summer time-change
Thanks to the calendar time-switch integrated into the equitherm EQJW 125,
the winter/summer time-change and the summer/winter time-change are
carried out automatically. The date for the change-over is specified by the
value for SERVice parameters SP23 and SP24. A value of 16.2 corresponds to
16
th
February. If the date entered is a Sunday, the change-over takes place on
the same day. Otherwise, the change-over is performed on the following
Sunday. For the summer/winter time-change, the time is put back from 03:00
hours to 02:00 hours. The winter/summer time-change takes place at 02:00
hours. The time is put forward to 3:00 hours. If SERVice parameters SP23 and
SP24 have the same values, no summer/winter time-change is performed.
SP19
SP20
SP21
SP22
SP23, P24