User Manual

14-8

Siemens Switzerland Ltd www.siemens.com/gamma 2019

Building Technologies Division

Home Automation System

Technical specication

Central functions

... Continuation of the table

Central apartment unit Multicontroller

Type QAX903-9 QAX913-9 RRV934

Domestic hot water

• Charge, changeover, release n

• Temperature control n

• Time program n

Floor cooling

• Override of room controller n n

• Flow temperature control with cooling curve n n

• Dew point monitoring n

• Cooling demand per room group n

Domestic ventilation

• Fan steps 3 3 3

• Night cooling n n

• Operation-hour counter / maintenance

message

n n

Superordinated HVAC functions

Demand signals

n / n n / n

2 2

n n n

• Heat request, switching / continuous

• Refrigeration request, switching / continuous

Room groups / zone control

• Room group pump

• Flow temperature control

• Flow temperature limitation

• Return temperature limitation

34_VS_2017_Gamma HQ_EN_Chapter_14_V1.indd 8 26.07.2018 15:22:34