Dhw Operating Mode During Absence; Dhw Temperature Setpoint; Dhw Time Switch - Siemens Synco 900 Operating Instructions Manual

Possible reasons for the current operating state:
• Commissioning
• Electrical heating
• Forced charging
• DHW charging lock
• Legionella program
• DHW operating mode (if not "Auto")
• Special day / holidays / absence

• DHW time switch

• Summer operation

DHW operating mode during absence

The DHW operating mode required during absence can be selected:
Main menu > DHW > Operating mode > Optg mode absence:
Factory setting
Your setting

DHW temperature setpoint

If the DHW temperature is too high or too low, you can change the
setpoint:
Main menu > DHW > Setpoints > Normal setpoint:
Main menu > DHW > Setpoints > Reduced setp:
Factory setting
Your setting
DHW time switch
In DHW operating mode "Auto", the central apartment unit controls
DHW charging in accordance with the DHW time program.
Main menu > DHW > Time switch > Weekday X:
You can set up to 6 switching points for each weekday plus one spe-
cial day. You can also define the DHW temperature setpoint (Normal
or Reduced) to be used at each switching point.
The switching points can be set, deleted or copied to some other
weekday. The settings are made analogously to the room time switch
settings (refer to page 31).
The central apartment unit is supplied with the following factory
settings for all weekdays: 05:00 for changeover to the Normal
setpoint, 22:00 for changeover to the Reduced setpoint.
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Building Technologies
HVAC Products
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--- (no impact, according to time program)
Normal
Reduced
Protection
Normal setpoint
55 °C
Synco 900 Operating Instructions
Central apartment unit QAX910
Reduced setpoint
40 °C
CE1B2707en
19.07.2006