Operation Manual

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Siemens Schweiz AG User Manual CE1U2354en
HVAC Products QAA75.. / QAA78… / AVS37.. 23. August 2007
• Protective functions active
• Automatic summer / winter changeover (ECO functions) and automatic 24-hour
heating limit active
Selection of cooling mode
The "Cooling" mode is selected by use of the Cooling button. The
choice made is indicated by a bar which appears below the symbol.
Cooling mode
Cooling mode controls the room temperature in accordance with the time program.
Characteristics of cooling mode:
− Manual cooling mode
− Cooling mode based on time program
− Temperature setpoint based on "Comfort setpoint, cooling"
− Protective functions active
− Automatic summer/winter changeover active
− Summer compensation
Selecting the DHW heating mode
The button is used to switch DHW heating mode on and off. The selection made is
indicated by a bar which appears below the respective symbol.
DHW heating mode
• On
The DHW is heated according to the selected switching program.
• Off
No DHW heating, but the protective function is active.
DHW push
Triggering is effected by keeping the DHW operating mode button on the operator or
room unit depressed for at least 3 seconds.
It can also be started when:
• The operating mode is “Off“
• Operating mode changeover acts via H1 or centrally (LPB)
• All heating circuits use the holiday function
Adjusting the room temperature setpoint
Turn the setting knob to increase or decrease the Comfort setpoint
.
For the Reduced setpoint
− Press OK
− Select operating page “Heating circuit“ and
− adjust the “Reduced setpoint“
After each readjustment, wait at least 2 hours, allowing the room temperature to adapt.