Diagram 80
21
Diagram 80:
Layering storage tank, feed pump and domestic hot water preparation
Sensors
Outputs
T1…. Collector
A1…. Solar pumps
T2…. Tank top
A2…. Heat exchanger pump (hot water)
T3…. Tank bottom
A3…. Three-way valve layering storage
T4…. Hot water (ultra-fast sensor)
A4…. Feed pump
T5…. Boiler
T6…. Solar flow
Program 80:
Function according to diagram
A1 = T1 > (T3 + diff1) & T3 < max1
A2 = T2 > (T4 + diff2) & T4 < max2
A3 = (T6 > min2 or T6 > (T2 + diff3)) & T2 < max3
A4
=
T5
>
(T3
+
diff4) & T5 > min1 & T3 < max4
T1 T5 T6 T6
min1 min2
diff1 diff4 diff3
A1 A4 A3 A3
T3 T2
max1 max3
max4
diff2
A2
T4
max2
Required settings:
diff1
…coll. T1 – TK T3
A1
diff2
…tank T2 – WW T4
A2
diff3
…flow T6 – TK T2
A3
diff4
…boiler T5 – TK T3
A4
min1
…switch-on temp. boiler T5
A4
min2
…switch-on temp. flow T6
A3
max1
…limit TK T3
A1
max2
…limit WW T4
A2
max3
…threshold TK T2
A3
max4
…limit feed pump TK T3
A4
Additional
: Both speed controls
Pd1,
Pd2
CW