Siemens QAA78.610 - Heating;Cooling Circuit 1 Configuration

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Siemens Switzerland Ltd
User manual RVS61.843 CE1U2355en_02
HVAC Products 6 The settings in detail 23. November 2007
Heating / cooling circuit 1
Line no. Operating line
5710 Heating circuit 1
Off ¦ On
5711 Cooling circuit 1
Off ¦ 4-pipe system ¦ 2-pipe system¦
5712 Use of mixing valve 1
None ¦ Heating ¦ Cooling ¦ Heating and Cooling
Using this setting, heating circuit 1 can be switched on and off.
Off
The cooling circuit is deactivated.
4-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 separate
primary circuits.
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
primary circuit.
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
Heating circuit 1
Cooling circuit 1
Use of mixing valve 1