N200-102-00
3
I56-3947-200
Figure 7: Sequence (1 to 9) to Mount the Detector on the Bracket
Pipe Installation
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1
7 18
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
18
99 mm
41
1
2
mm
90 mm
4
3
0.00
o
5
329 mm
6
7
7a
7b
7c
7d
8
9
1
2
FAAST LT MODEL
INLET PIPE HOLE
OUTLET PIPE HOLE
NFXI‐ASD11
1 & 2, or 1 or 2
5
NFXI‐ASD12
1 & 2, or 1 or 2
6
NFXI‐ASD22
Channel 1 ‐ 1 & 2, or 1 or 2
Channel 2 – 3 & 4, or 3 or 4
5
6
Pipe Hole Configuration
Figure 8
below shows the pipe holes available on the unit. Each
unit has 2 pipe holes per channel (so if installing a 1 channel unit,
holes 3 and 4 do not function). Use
Table 1
to locate the holes
required for the installation:
Figure 8: Pipe Holes
Table 1: Pipe Holes Used for Each FAAST LT Model
Note 1:
Pipe holes not used should be kept sealed.
Note 2:
Do
NOT
glue pipes into the pipe holes.
Table 1a: Maximum Number of Pipe Holes Allowed Per Channel
for EN54-20 Compliance
All figures quoted using highest (level 1) sensitivity.
1
2
3
4
5
6
CLASS
PIPE
LENGTH
(m)
MAX
NUMBER
OF
HOLES
PER
CHANNEL
C
100
18 (10 x 2.5mm, 8 x 3mm) + 3mm
non sensing end hole)
B
100
6 (4 x 4mm, 2 x 5mm inc end hole)
A
80
3 (1 x 5mm, 2 x 6mm inc end hole)
