FLX-020 I-pipe network, Class C without In-line filter
Exhaust pipe of 10m (E), First hole at 5m (F), Last hole at 35m from the first hole (L1), 6 holes
chamber 2: first hole at 4m (F2), Last hole at 33m from the first hole (L2)
5. Calculate nominal step between holes and hole position deviation from nominal for branch 2
S2 = L2 / ( Number of holes – 1 ) = 33 / 5 = 6
.6 m (≥2.5m)
± 0.2*6.6m = ±1.3m
Example:
Required
Rules
N Number of holes 6
See Table
E Exhaust pipe 10m
max 14 (See Table row B)
L1 Last hole 35m
F First hole with low speed
with high aspirator speed
5m 1 ÷ (26-10)
1 ÷ (30-10)
PL Pipe length with low speed
with high aspirator speed
10+5+35=50m ≤ 50 m
≤ 80 m
L1 Last hole, chamber 2 33m
4. Verify that branch 2 first hole position (4m) satisfies rules
F2min = F – 0.2*S1 = 5m – 0.2*7 = 3.6 m
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