EB 5573-1 EN 137
Appendix
CO4: DHW circuit (systems Anl 1.1–1.3, 1.5, 1.6, 1.9, 2.x, 4.1, 4.5, 11.x)*
F Function WE System
Comments
Function block parameters: value range (default setting)
01 Storage tank
sensor 1
1
1.1–1.3,
1.5, 1.6,
2.x, 4.1,
4.5, 11.0,
11.2
CO4 > F01 - 1: Storage tank sensor SF1
CO4 > F01 - 0: Storage tank thermostat
(only with CO4 > F02 - 0; not system Anl 11.0)
0
1.9, 11.9
02 Storage tank
sensor 2
0
1.1, 1.3,
1.5, 2.0,
2.1, 2.3,
4.1, 4.5,
11.0, 11.1
CO4 > F02 - 1: Storage tank sensor SF2
(only with CO4 > F01 - 1; not systems Anl 1.3, 1.9, 2.3, 11.0
and 11.9)
1
1.2, 1.6,
2.2, 11.2
03 Return ow
sensor RüF2
0
1.9, 11.x
CO4 > F03 - 1:
Return ow sensor RüF4, limitation function ac-
tive
Function block parameter:
KP (limiting factor): 0.1 to 10.0 (1.0)
04 Flow rate
sensor
0
1.9, 11.9
CO4 > F04-1: Flow rate sensor at BI2
Function block parameter:
Select: Analog/binary (analog)*
* Analog = Flow rate sensor (1400-9246)
Binary = Flow switch at terminals 10/12
05 Flow sensor 0
1.1, 1.2,
1.6, 2.2
CO4 > F05 - 1: Flow sensor VF4 (to measure storage tank
charging temperature)
06 Parallel pump
operation
0
2.1–2.3,
4.1, 4.5
CO4 > F06 - 1: Parallel pump operation
Function block parameters:
Stop: 0 to 10min (10min)
Temperature limit: 20.0 to 90.0°C (40.0°C)
CO4: F06 - 0 > UP1 switched off during DHW heating
07 Intermediate
heating
1
2.x, 4.1,
4.5
CO4 > F07 - 1: after 20 minutes of DHW heating, heating op-
eration in UP1 circuit reactivated for 10 minutes
CO4 > F07 - 0: storage tank charging is given unlimited prior-
ity concerning UP1 circuit