Honeywell Xtralis FAAST FLEX FLX-010 Product Manual page 65

FAAST FLEX
Piping Design "I" pipe - Dual Channel (FLX-020):
FLX-020 I-pipe network, Class C without In-line filter
Example:
Exhaust pipe of 10m (E), First hole at 5m (F), Last hole at 35m from the first hole (L1), 6 holes
...
1. Verification of project constraints and determination of aspirator speed
N Number of holes
E Exhaust pipe
F First hole with low speed
with high aspirator speed
L1 Last hole
PL Pipe length with low speed
with high aspirator speed
2. Calculate nominal step between holes and hole position deviation form nominal
S1 = L1 / ( Number of holes – 1 ) = 35 / 5 = 7 m (≥2.5m)
± 0.2*7m = ±1.4m
3. Determination of necessary Sensitivity Level
and the hole diameters
4 4 4
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Required
6 See Table
10m max 14 (See Table row B)
5m 1 ÷ (26-10)
1 ÷ (30-10)
35m
10+5+35=50m
Number of Branch Holes
l 3
Aspirator speed, max 65m for H and 45m for L
A
- Maximum First Hole Distance (meters)
B
- Maximum Exhaust Pipe Length (meters)
Alarm Level Class C with/without filter
Alarm Level Class B with/without filter
Alarm Level Class A without filter only
Drilled hole diameter (mm)
Rules
1
2
≤ 50 m
≤ 80 m
1 2
H/L H/L
NN 30/30
14/14 14/14
Low Low
High High
High High
6.5
H1 H1
FAAST FLEX Product Guide
1
3 4 5 6 6
H/L H/L H/L H/L
30/30 30/30 30/30 30/26
14/14 14/14 14/14 14/14
Low Medium Medium Medium
High High High High
High
- - -
4 4 4
6 5 4 4 3
H1 H1 H1 H1
2
3
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