TA UVR 64 Operation And Installation Instructions Manual page 29

All Programs +1: The feeding of the hot water tank is normally done by the difference buffer
T5 – hot water tank T2. This program considers also the boiler temperature T6.
T1 T5
min1
diff1 diff2
A1 A2
T4 T2
max1 max2
All Programs +2: Separated on and off thresholds for the burner requirement
All Programs +4: Diagram with solid fuel boiler instead of a solar power system. The thresh-
old min1 affects not at T5 but at T1.
Burner A4
T6
T5 max4
min2
diff4 diff3
A2 A3
T3
max3
A1 = T1 > (T4 + diff1) & T4 < max1
A2 = T5 > (T2 + diff2) & T2 < max2 & T5 > min1
or T6 > (T2 + diff4) & T2 < max2 & T6 > min2
A3 = T6 > (T3 + diff3) & T3 < max3 & T6 > min2
A4 (on) = T5 < max4 – hysteresis
A4 (off) = T5 > max4
A3 = T6 > (T3 + diff3) & T6 > min2
A4 (on) = T5 < max3
A4 (off) = T3 > max4
Required settings:
diff1 ...coll. T1 – TP1 T4
diff2 ...TK1 top T5 – TK2 T2
diff3 ...boiler T6 – TK1 T3
diff4 ...boiler T6 – TK2 T2
min1 ...switch-on temp. TK1 T5  A2
min2 ...switch-on temp. boiler T6  A2, 3
max1 ...limit TK1 T4
max2 ...limit TK2 T2
max3 ...limit TK1 T3
max4 ...burner requirement T5
Diagram B0
 A1
 A2
 A3
 A2
 A1
 A2
 A3
 A4
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