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Available head Indoor Unit (Victrix 24 HY) + Outdoor Unit (Audax DK4)
80
70
60
50
Y1
40
30
2
20
10
4
0
0
Key (Fig. 38):
1
= Head available to the system at speed 100% with by-pass closed
2
= Head available to the system at Speed 40% with by-pass closed
3
= Circulator power input at Speed 100% with closed by-pass
4
= Circulator power input at Speed 40% with closed by-pass
Area between curves 1 and 2 = Available system head with bypass closed
Area between curves 3 and 4 = Circulator absorbed power with bypass closed
X1
= Flow rate (l/h)
Y1
= Head (kPa)
Y2
= Power absorbed by pump (W)
54
1
200
400
600
800
1000
1200
X1
80
3
70
60
50
Y2
40
30
20
10
0
1400
1600
38
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