INS
TALLER MANU
AL
34
System 13
Outputs:
A1
Collector pump 1
A2
Collector pump 2 for system filling
Inputs:
F1
Collector 1 temperature sensor F1
F3
Storage cylinder inlet temperature
sensor
F4
Storage cylinder outlet temperature
sensor
F2
(optional) Storage cylinder top tem-
perature sensor
F5
Supplementary temperature sensor
Impulse (optional) PWM input for volumetric
flow meter
A1 and A2 control conditions
ON: F1 - F4 > P30 and F1 > P40
and F1 > P42
and F4 > P84
OFF: F2 < P50
Both pumps (A1 and A2) are switched on
simultaneously for the time set in P87 to fill the
collector. During filling, the pumps run at the
speed set in parameter P107.
A1 control conditions
After the end of the time set in parameter P87:
ON: Controller enabled for collector pump
A1
OFF: F3 – F4 < P31
or F3 > P85
or F4 > P86
A2 control conditions
OFF: After the end of the time set in param-
eter P87.
Because of the drainback function, certain
protection functions (frost protection, maxi-
mum collector temperature) are not active in
standby mode.
(F2)
F4
F3
F1
A1
A2
Fig. 2.22
Impulse