Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Heating/cooling changeover 03.10.2011
M
T
aa a
S3 S2 S1 S4 S5
yp yp yp yp yp
x
Q
23
A
y1 y2
Y
y3 x
Kältebedarf
Q
Y
QY
d
d
Q
N.Q2
Q
N.Q3
Q
N.Q1
N.Y1
Y
DO
AO


N.X1
SIGNAL Y
°C
Gen limit Seq limit
Controller 1 (Flow temperature)
Heat demand Cooling demand
Supervision
Operating mode
Mod output
3150S09en
with:
Y1: Valve
Q1: Changeover valve relay
Q2: Heat demand relay
Q3: Refrigeration demand relay
Heating start 01.10., cooling start 01.05., locking time 4 h (locking of relays Q2 and
Q3 or demand signals KNX after changeover).
Heating start Day – month 01.10.****
Cooling start Day – month 01.05.****
For a detailed description of the KNX signals in various H/C variants, see "KNX
documentation" (P3127, section 9).
Typical settings
Entry
Note