Baxi QAA73.110, Basic Documentation

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Siemens Building Technologies Basic Documentation QAA73.110 Room unit CE1P2284en
HVAC Products Error! Style not defined. 19.06.2002
4.9 Actual value of solar storage tank
temperature
The current solar storage tank temperature is displayed.
Press the line selection buttons to select line 61.
Display Unit
–40 ... +127 °C
4.10 OpenTherm mode
For communication between the QAA73.110 and boiler control, the OpenTherm
protocol is used.
OpenTherm differentiates between 2 modes, Plus and Lite:
•
In OpenTherm Plus mode, the QAA73.110 can read or write various standardized
objects via the bus
•
In OpenTherm Lite mode, the QAA73.110 delivers only one signal to the boiler
control for controlling the heat output. In the event of fault, boiler control signals
Boiler Lock-Out Fault to the QAA73.110
Press the line selection buttons to select line 62.
Display Unit
Lite, Plus –
Directly after connection of OpenTherm, the QAA73.110 ascertains whether boiler
control supports the OpenTherm Plus or the OpenTherm Lite protocol.
The protocol currently used will automatically be displayed on this line.
Lite OpenTherm Lite protocol is used
Plus OpenTherm Plus protocol is used
4.11 Current flow temperature setpoint HC1 and
HC2
The current flow temperature setpoint is displayed. For heating circuit 1 on line 63, for
heating circuit 2 on line 64.
Press the line selection buttons to select line
63 or 64 .
Display Unit
0...100 °C
Description
Line 61
Description
Line 62
Effect
Description
Line 63, 64