Baxi QAA73.110 Basic Documentation page 3

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Siemens Building Technologies
HVAC Products
4.1 Current room temperature setpoints ..............................................................35
4.2 Attenuated outside temperature.....................................................................35
4.3 Composite outside temperature.....................................................................36
4.4 Actual value 2 of d.h.w. temperature .............................................................37
4.5 D.h.w. flow rate ..............................................................................................37
4.6 Actual boiler return temperature ....................................................................37
4.7 Actual value of the flue gas temperature .......................................................37
4.8 Actual value of solar collector temperature....................................................37
4.9 Actual value of solar storage tank temperature .............................................38
4.10 OpenTherm mode..........................................................................................38
4.11 Current flow temperature setpoint HC1 and HC2 ..........................................38
Space heating ................................................................................................39
4.12 Heating curve slope .......................................................................................39
4.13 Minimum and maximum limitation of flow temperature HC1 and HC2 ..........40
4.14 Parallel displacement of heating curve HC1/HC2..........................................41
4.15 Type of building construction .........................................................................42
4.16 Room influence ..............................................................................................42
4.17 Switching differential of the room temperature ..............................................43
4.18 Adaption of the heating curve ........................................................................44
4.19 Maximum forward shift for optimum start control ...........................................46
4.20 Maximum forward shift for optimum stop control ...........................................46
D.h.w..............................................................................................................47
4.21 Reduced setpoint of the d.h.w. temperature ..................................................47
4.22 Release of d.h.w. heating ..............................................................................47
4.23 Legionella function .........................................................................................48
4.24 D.h.w. operating mode selector .....................................................................49
4.25 Control of d.h.w. circulating pump..................................................................49
General ..........................................................................................................49
4.26 Programming .................................................................................................49
4.27 Clock time master ..........................................................................................51
4.28 Winter- / summertime changeover.................................................................51
4.29 Summer- / wintertime changeover .................................................................52
5 Description of the OEM settings ................................................................53
Space heating OEM.......................................................................................53
5.1 Maximum setpoint (TRwMax) and minimum setpoint (TRwMin) of room
temperature....................................................................................................53
5.2 Gain factor of room influence (KORR) ...........................................................53
5.3 Constant for quick setback (KON) .................................................................54
5.4 Boost of the room temperature setpoint (DTRSA) .........................................55
5.5 Limitation of rate of increase of flow temperature setpoint ............................56
5.6 Measured value correction of room temperature ...........................................56
D.h.w. OEM....................................................................................................56
5.7 Maximum d.h.w. setpoint (TBWmax) .............................................................56
5.8 Setpoint of the legionella function ..................................................................57
5.9 Dwelling time at legionella function setpoint ..................................................57
5.10 Effect of legionella function on the circulating pump......................................57
Service functions OEM ..................................................................................58
5.11 Info display.....................................................................................................58
5.12 Frost warning .................................................................................................58
5.13 Operation .......................................................................................................59
5.14 Action occupancy button................................................................................59
5.15 Software version ............................................................................................59
Basic Documentation QAA73.110 Room unit
Contents
CE1P2284de
19.06.2002