INS
TALLER MANU
AL
24
F4
F1
F2
(F3)
A2
A1
A3
(
)
A3
Impulse
Impulse
Fig. 2.12
System 4
Outputs:
A1
Collector pump 1 (speed control)
A2
Collector pump 2 (speed control)
A3 Additional relay, freely programmable
function
Inputs:
F1
Collector 1 temperature probe
F2
Collector 2 temperature probe
F4
Temperature probe at bottom of stor-
age cylinder 1 / A1 max. temp. moni-
toring (when F3 not fitted)
F3
(optional) Temperature probe at top
of storage cylinder 1 / A1 max. temp.
monitoring or reference probe during
heating
F5
Additional probe (optional) (no func-
tion, display only) reference probe for
return temperature control
Impulse (optional) pulse input for volumetric
flow meter or 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 1
OFF:
F3 (or F4) > P50
ON again:
F3 (or F4) < P50 - 5°C
Maximum collector temperature
OFF: F1 > P42
ON: F1 < P42 - 10°C
Switching conditions for A2:
Heat production (difference between storage
cylinder and min. temp.)
ON: F2 - F4 > P32 and F2 > P40
OFF: F2 - F4 < P33 or F2 < P41
Maximum storage cylinder temperature 2
OFF:
F3 (or F4) > P50
ON again:
F3 (or F4) < P50 - 5°C
Maximum collector temperature
OFF: F1 > P42
ON: F1 < P42 - 10°C
