6
DESIGN AND OPERATING LOGIC
The unit has the following operating logic, fi g. 2:
Warm stale extract air from the room fl ows through the air ducts to the unit, where it is fi ltered, then air fl ows through the heat
exchanger and is exhausted outside by the extract fan through the air ducts.
Clean cold air from outside is moved by the supply fan to the unit, where from it is directed to the supply fi lter. Then fi ltered air fl ows
through the heat exchanger and moves to the room through the air ducts.
Heat energy of warm extract air is transferred to clean intake fresh air from outside and warms it up. Heat recovery minimizes thermal
energy losses, energy demand and operating costs for air heating accordingly.
The air handling unit construction includes specially designed and sealed service panels for repair and preventing operations. The
terminal block on the side panel incorporates a terminal block. Power and ground cables are connected to the terminal block through
the sealed electric lead-ins.
Fig. 2. Design and operating logic
EXTRACT AIR
SUPPLY AIR
INTAKE AIR
EXHAUST AIR
VUT H mini EC
Supply fan
Extract fan
Heat exchanger
Drain pan
Thermostatic switch
Supply filter
Extract filter
Terminal box
Condensate drain pipe
Supply fan
Heat exchanger
Drain pan
Thermostat switch
Condensate drain pipe
Terminal box
Extract filter
Supply filter
EXHA
UST AIR
INT
AKE AIR
EX
TR
A
C
T AIR
SUPPL
Y AIR
VUT V mini ЕС
Extract fan