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Graph 2
b) With Qaa7 room temperature regulator:
The temperature curve "kt" must be selected by setting parameter 70 "HC1 curve" of the QAA73 room tem-
perature control device as described in section 14.4 "QAA73: parameters which can be set by the installation
engineer (service)".
See graph 4 for selecting the curve referred to a room temperature of 20°C.
The curve is shifted automatically on the basis of the room temperature set using the QAA73 climate con-
trol.
If the system is divided into zones, the temperature curve "kt" relating to the part of the system not control-
led by the QAA73 must be selected by setting parameter H532 as described in section 16 "setting the boiler
parameters".
IMportant: For systems divided into zones, parameter 80 "HC2 curve", which can be set on the QAA73
room temperature regulator, must be set as _ _ . _ "not active" (see section 14.4).
Graph 4
c) With aGu.500 for control of a low temperature system:
Refer to the instructions provided with the AGU2.500 accessories for connection and control of a low tem-
perature zone.
InstructIons pErtaInInG to thE InstaLLEr
tM = Flow temperature
te = Composite outside temperature
Sth = Kt Curve
tM = Flow temperature
te = Composite outside temperature
9
Graph 3
91.7.1 - GB/IE
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