Honeywell Xtralis FAAST FLEX FLX-010 Product Manual page 62

FAAST FLEX Product Guide
Piping Design "U" Pipe - Single Channel (FLX-010):
U-pipe network, Class C with In-line filter
Example:
Exhaust pipe of 5m (E), T-junction 10m (T), Branch of 30m (B1), First hole at 5m (F), 6 holes ...
1. Verification of project constraints and determination of aspirator speed
E Exhaust pipe
T T-junction position
B1 Branch length
F First hole, Branch 1
PL Pipe length with low speed
with high aspirator speed
L1 Last hole position, Branch 1
N Number of holes
2. Calculate nominal step between holes and hole position deviation form nominal
S1 = L1 / ( Number of holes – 1 ) = 25 / 5 = 5 m (≥2.5m)
± 0.2*5m = ±1m
3. Determination of necessary Sensitivity Level cessar
and the hole diameters
3
55
Required Rules
5m ≤ 14 m
10 ≤ 10 m (15m-E)
30m
1.25 ÷ 25m
5m
5+10+30=45m ≤ 45 m
≤ 65 m
45-5-10-5=25m
6 See Table
Number of Branch Holes
Aspirator speed, max 65m for H and 45m for L
2
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)
1
1 2 3
H/L H/L H/L
Low Low Medium
High High High
High High
-
6.5 5.5 4.5
H1 H1 H1
FAAST FLEX
1
4 5 6
H/L H/L H/L
Medium Medium High
2
High High High
- - - -
3.5 3.5 3
H1 H1 H1
3
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