21
2.11
System diagrams
System 1
Outputs:
A1
Collector pump
A2
Additional relay, freely programmable
function
A3
Additional relay, freely programmable
function
Inputs:
F1 Collector
F4
Temperature probe at bottom of stor-
age cylinder/A1 max. temp. monitor-
ing (when F3 not fitted)
F2
(optional) Collector return tempera-
ture to measure heat production
F3
(optional) Temperature probe at top
of storage cylinder / A1 max. temp.
monitoring. 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
OFF:
F3 (or F4) > P50
ON:
F3 (or F4) < P50 - 5°C
Maximum collector temperature
OFF:
F1 > P42
ON:
F1 < P42 - 10°C
(F2)
F4
F1
A1
(F3)
(
)
A2/A3
Fig. 2.9
Impulse
Impulse