2-pipe system
Q2
HK
T
Y1/Y2
B1
Q24
KK
T
Y23/Y24
B16
The cooling and heating circuits draw their
cooling / heating energy from the same
common flow.
Use of mixing valve 1
The parameter is only active in a 4-pipe system.
Heating
Cooling
Heating and cooling
Q2
HK/KK
T
B1
Y1/Y2
Y21
H
K
K
H
Q2
HK/KK
T
B1
Y1/Y2
Y21
H
K
H
K
Q2
HK/KK
T
B1
Y1/Y2
Y21
H
K
K
H
HK
Heating circuit
KK
Cooling circuit
H
Primary heating circuit
K
Primary cooling circuit
The setting is required when one of the QX… relay outputs (configuration) is used as a
diverting cooling valve Y21.
Heating circuit 2
Line no.
Operating line
5715
Heating circuit 2
Off ¦ On
Using this setting, heating circuit 2 can be switched on and off.
Heating circuit 2
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Siemens Switzerland Ltd
User manual RVS61.843, RVS41.813
CE1U2355en_02
HVAC Products
6 The settings in detail
28. September 2009