17
Fig. 2.18
ø 100
60 mm
In the event that twin flue pipes are used, and the boiler has
a side clearance of less than 60mm from the wall, it is
necessary to cut a larger diameter hole for the flue pipe, this
should be ø10 cm, this will then allow for easier assembly of
the air intake elbow and the tube outside the wall (see Fig.
2.19).
Fig. 2.19
In the event that the air intake and exhaust are run to the left,
it will be necessary to reduce the height of the air intake by
cutting 20mm from the base of the air intake elbow (see Fig.
2.18)
Coaxial
Systems
Twin Pipe
Systems
Exhaust Type
Type 1
Type 1
Types 2 & 3
Type 4
Type 5
Maximum Extension
Exhaust/Air
(m)
4 (Horizontal)
16 (Horizontal)
4 (Vertical)
16 (Vertical)
54
(Air Intake & Exhaust
Equal Lengths (27
and 27 metres)
1+56 (Air Intake 1
Metre and Exhaust 56
Metres)
Diameter
of Pipes
(mm)
Ø 60/100
Ø 80/125
Ø 60/100
Ø 80/125
Ø 80/80
Ø 80/80
Reduction
45
o
(m)
0.5
0.5
0.5
0.5
0.25
0.25
Reduction
90
o
(m)
1
1
1
1
0.5
0.5
Summary of Contents for ACO 35 MFFI
Page 66: ...66 ...
Page 69: ...69 11 BENCHMARK COMMISSIONING CHECKLIST ...
Page 70: ...70 12 SERVICE INTERVAL RECORD ...
Page 71: ...71 ...