31
F4
F1
F3
F2
(F5)
A1
A2
1
2
Impulso
A3
Impulso
(
)
A3
Fig. 2.19
System 10
Outputs:
A1
Collector pump (speed control)
A2
Heat transfer pump to storage cylinder 2
(speed control)
A3 Additional relay, freely programmable
function
Inputs:
F1
Collector temperature probe
F4
Temperature probe at bottom of stor-
age cylinder 1
F2
Temperature probe at bottom of stor-
age cylinder 2
F3
Temperature probe at top of storage
cylinder 1 / A1 max. deactivation temp.
or reference probe during heating
F5
(optional) Temperature probe at top
of storage cylinder 2 (display only),
reference probe for heating or refer-
ence probe for return temperature
control
Impulse (optional) pulse transducer for volu-
metric meter, circulating pump con-
trolled by impulses
Switching conditions for A1
Heat production (difference between storage
cylinder and min. temp.)
ON: F1 - F4 > P30
and F1 > P40
OFF: F1 - F4 < P31
or F1 < P41
Maximum storage cylinder temperature
OFF: F3 > P50
ON: F3 < P50 - 5°C
Maximum collector temperature
OFF: F1 > P42
ON: F1 < P42 - 10°C
Switching conditions for A2:
ON: F5 (or F2) <= P51 – 5°C
and F3 – F2 >= P32
OFF: F5 (or F2) > P51
or F3 – F2 < P33
impulse
impulse
