Daikin OAC 003G Installation And Maintenance Manual page 21

Figure 31: Wheel-to-Inlet Funnel Relationship—13 to 36
Belt-Drive Plenum Fans
Cross Section Reference
B
FROM FUNNEL END TO
FANWHEEL OPENING END
A
C
Table 8: Wheel-to-Inlet Funnel Relationship—13 to 36 Belt-
Drive Plenum Fan
Wheel-Funnel Parameters
Size A
13 0.25
15 0.25
16 0.25
18 0.38
20 0.42
22 0.45
24 0.51
27 0.55
30 0.62
33 0.55
36 0.63
Figure 33: Fan Wheel Rotation
Daikin IM 777-7
EQUALLY SPACED
AROUND DIAMETER
B C
0.91 3.50
0.91 3.50
0.91 3.50
0.86 3.88
1.11 3.88
1.11 3.88
1.11 3.88
1.36 4.50
1.36 4.50
1.50 5.00
1.50 5.00
Operation Guidelines
Figure 32: Wheel-to-Inlet Funnel Relationship—40 to 60
Belt-Drive Plenum Fans
Cross Section Reference
FUNNEL END TO FAN
WHEEL OPENING
C
Table 9: Wheel-to-Inlet Funnel Relationship—40 to 60 Belt-
Drive Plenum Fan
Wheel-Funnel Parameters
Size A
40 0.82
44 0.91
49 1.00
54 1.10
60 1.23
A
EQUALLY
SPACED AROUND
B
DIAMETER
B
2.00
2.25
2.50
2.50
3.00
C
4.88
5.50
5.50
5.50
5.50
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