en
15
System 3
S1
S2
S3
R1
R2
S4
S6
R4
S7
S8
VFD
Col
St1
St2
St1 top
St1 base
St2 top
St2 base
Relay / sensor allocation
System 4
S1
S2
S3
R1
R2
S4
S6
S5
R3
VFD
Col
1
Col
2
St
St top
St base
Relay / sensor allocation
1
2
3
4
5
6
7
8
9
Relay
Collector pump
Secondary
circuit
Optional
function
3-port valve
Optional
function
-
-
-
-
Sensor
Collector
Primary circuit
Secondary
circuit
Store 1 base
Free
Store 1 top
Store 2 base
Store 2 top
Free
1
2
3
4
5
6
7
8
9
Relay
Collector
pump 1
Secondary
circuit
Collector
pump 2
Optional
function
Optional
function
-
-
-
-
Sensor
Collector 1
Primary circuit
Secondary
circuit
Store base
Collector 2
Store top
Free
Free
Free
Flow direction when
normally open
