Siemens Synco RMU720 - Changeover Based on Calendar

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Building Technologies Basic documentation: Communication via the KNX bus CE1P3127en
HVAC Products Appendix 30.08.2007
9.2.3 Changeover based on calendar
Calendar-based changeover is configured in the "H/C changeover" function block
(see the checkmark by the calendar symbol in the primary controller, RMU7x0B).
The HC changeover relay in the primary controller acts on the generation of
heating/refrigeration energy which is also controlled by the primary controller.
1
M
T
1
KNX
2
M
2
T
S1 S1 S1
S2 S2
x
S2
S3
QYd
123
9
x
Kältebedarf
Q
Y
d
S4 S4 S4
S5
123
9
x
Q
23
9
S1 S1 S1
S2 S2
x
S2
S3
QY
d
123
9
x
Kältebedarf
QY
d
S4 S4 S4
S5
123
9
x
Q
23
9
9
S1 S1 S1
S2 S2
x
S2
S3
QY
d
123
9
x
Kältebedarf
QY
d
S4 S4 S4
S5
123
9
x
Q
23
9
T
M
1
2
Htg/ClgCoil 2
3127S05
Htg/ClgCoil 1
Flow
Return
H/C changeover signal
Heat/refrig distribution zone 1
Precontrol
H/C changeover
Supervision Controller
Contoller
Supervision
Refrig demand
H/C changeover
Heat demand
Supervision Controller
Controller
Supervision
H/C changeover
Heat demand
Supervison
Controller
Controller
Supervision
Refrig demand
3127S05en
Heat demand
Refrig demand
Pre
Changeover source
calendar