9
OPERATION DESCRIPTION
The picture below shows the unit plan with the main internal components and air flows.
1 - Air/air heat recuperator
2 - Cooling compressor;
3 - water-supplied finned coil;
4 - Cooling evaporator;
5 - Freon/air condenser;
6 - Freon/water plate condenser;
7 - Delivery fan;
8 - Ejection fan;
9 - Ejection and foul air vacuum damper (optional);
10 - Room air recirculation damper;
11 - Electric board.
AERAULIC OPERATION
The air flow rates treated by the unit can be set through the control panel.
The fans automatically reach the speed required to overcome the losses of pressure inside
the ducts.
There can be two air flows inside the unit: the exchange air flow with heat recovery through
the counter-current air/air recuperator (1) and the room air recirculation flow.
The exchange and recirculation flows can be either combined or kept separate based on the
flow rates and the type of treatment desired for the inflow air.
The following air treatments are available:
-
Air exchange with optional winter heating or summer cooling;
-
Winter air recirculation, summer cooling, summer dehumidification, summer
cooling and dehumidification;
-
Air recirculation with partial exchange, in addition to all the treatments provided for
recirculation.
The air flows can be set on the following values:
-
Inflow air, with variable recirculation rate: flow rate adjustable between 200 and 300 m3/h;
-
Exchange air: flow rate adjustable between 80 and 160 m3/h.
