Technische Alternative UVR63 - Program 448 - Burner Requirement and 2 Feed Pump Functions

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Program 448 - Burner requirement and 2 feed pump functions
Program 448: Feed pump A1 runs when:
 S1 is greater than the threshold min1  and S1 is greater than S2 by the difference diff1
 and S2 has not exceeded the threshold max1.
The feed pump A2 runs when:
 S5 is greater than the threshold min2  and S5 is greater than S3 by the difference diff2
 and S3 has not exceeded the threshold max2.
Output A3 switches on when S5 falls below threshold min3.
Output
A3 switches off (dominant) when S4 exceeds max3.
A1 = S1 > (S2 + diff1) & S1 > min1 & S2 < max1
A2 = S5 > (S3 + diff2) & S5 > min2 & S3 < max2
A3 (on) = S5 < min3 A3 (off) = S4 > max3
A1
A2
S1
A3
S3
S2
S4
S5
TK1
TK2
Required settings:
max1 … limit TK1 S2  A1
max2 … limit TK2 S3  A2
max3 … burner req. off TK1 S4  A3
min1 … switch-on temp. boiler S1  A1
min2 … switch-on temp. TK1 S5  A2
min3 … burner req. on TK1 S5  A3
diff1 … boiler S1 – TK1 S2  A1
diff2 … TK1 S5 – TK2 S3  A2
diff3 … see all programs +2
S1 S5
min1 min2
S2 S3
max1 max2
diff2
A2
diff1
A1
Burner
A3
S5 min3
S4 max3