MTA HAST 080 N - Page 67

MAINTENANCE AND OPERATING MANUAL
Electronic controller
HAS T 070÷140
66
ENGLISH
EN
The data in this manual are not binding and they can be modified by the manufacturer without notice. Reproduction of this manual is strictly prohibited.
The activation logic of the steps in heat pump mode is shown in the following diagram:
Heat pump
In addition, for heat pump mode, operation of the fans can be forced to constantly on.
6.7.5.3Fans speed control
This control type makes it possible to increase/decrease ventilation intensity in a linear manner in accordance with the
reference condensing pressure.
The ventilation intensity in chiller mode is shown in the following diagram and is linked to the starting of at least one
compressor in the reference circuit:
Chiller
The ventilation intensity in heat pump mode is shown in the following diagram and is linked to the starting of at least one
compressor in the reference circuit:
Heat pump
Step
Set 1
Pressure
DIFF
Set + DIFF
Set 2
Step 1
Step 2
%
Set 1
DIFF 1
DIFF 3
DIFF 2
Set 2
Set 2 LN
Press.
DIFF 3
DIFF 3
Perc. 2=Perc. 3
Perc.
Perc. 1
2 LN
Pressione
DIFF 3
DIFF 3
DIFF 1
Set 1
DIFF 2
Set 2
Set 2 LN
Perc. 1
Perc.
2 LN
Perc. 2=Perc. 3
%
DIFF 3