Operating guide
Termix AT BTD
7.0 Controls
7.1 DHW temperature control
DHW temperature control
There are various types of DHW temperature control used in
Danfoss substations.
DHW temperature should be adjusted to 45-50 °C, as this provides
optimal utilisation of DH water. At DHW temperatures above 55 °C,
the possibility of lime scale deposits increases significantly.
7.1.1 AB-QM controller (45–60 °)
QT is a self-acting thermostatic actuator designed to be used
as return temperature control thermostat in one-pipe heating
systems.
QT is dedicated to be used with AB-QM automatic balancing &
control valve.
AB-QM DN 10-20 (45-60 °C)
QT Sensor setting (turns)
Temperature setting
0
1
2
3
4
5
6
20 % 48,0 50,5 53,0 55,5 58,0 60,5 63,0
30 % 47,0 49,5 52,0 54,5 57,0 59,5 62,0
40 % 46,0 48,5 51,0 53,5 56,0 58,5 61,0
50 % 45,0 47,5 50,0 52,5 55,0 57,5 60,0
60 % 44,0 46,5 49,0 51,5 54,0 56,5 59,0
70 % 43,0 45,5 48,0 50,5 53,0 55,5 58,0
80 % 42,0 44,5 47,0 49,5 52,0 54,5 57,0
90 % 41,0 43,5 46,0 48,5 51,0 53,5 56,0
AB-QM (flow
setting)
100 % 40,0 42,5 45,0 47,5 50,0 52,5 55,0
The values are intended as a guide.
12
DEN-GT
VI.JV.Y3.02 / LUK40692
Danfoss District Energy
