23
F2
F4
(F3)
A2
Impulso
F1
A1
A3
Impulso
(
)
Fig. 2.11
System 3
Outputs:
A1
Collector pump (speed control)
A2
Solid fuel boiler pump
A3 Additional relay, freely programmable
function
Inputs:
F1
Collector temperature probe
F2
Solid fuel boiler probe control
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) or 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 > P43 + 5°C
OFF: F2 - F4 < P33 or F2 < P43
Maximum storage cylinder temperature
OFF:
F3 (or F4) > P50
ON again:
F3 (or F4) < P50 - 5°C
Maximum solid fuel boiler temperature:
OFF:
F2 > P44
ON again:
F2 < P44 - 10°C
impulse
impulse
