Lennox FCA 60

IOM / ROOF-TOP FLEXY™ Series - Page 43
FX AIR FLOW BALANCING
PRINCIPLE SKETCHES
10 000 m3/h
10 000 m3/h
10 000 m3/h
12 500 m3/h
2 500 m3/h
Fresh air hood
SUPPLY
air duct
RETURN
air duct
Treatment
fan
Extraction fan
EXTRACTION
air duct
Grid on damper
10 000 m3/h
10 000 m3/h
2 500 m3/h
12 500 m3/h
2 500 m3/h
10 000 m3/h
10 000 m3/h
2 500 m3/h
12 500 m3/h
0% FRESH AIR TREATMENT
100% FRESH AIR TREATMENT
CONSTANT 25% BYPASS TO EXTRACTION
Fresh air hood
Fresh air hood
RETURN
air duct
RETURN
air duct
SUPPLY
air duct
EXTRACTION
air duct
SUPPLY
air duct
EXTRACTION
air duct
Treatment
fan
Treatment
fan
Extraction
fan
Extraction
fan
Grid on damper
By pass grid
Figure 29
Figure 30
Figure 31
By pass grid
By pass grid