Supplied By www.heating spares.co Tel. 0161 620 6677
Fig. 3.8
Fig. 4.8
Exhaust/suction system with two separate rated
80 diam pipes - exhaust on flat or sloping roof,
suction from vertical wall.
Maximum distance D = I + E + T = Total
exhaust/inlet pipe = 27 metre.
Exhaust terminal must not be cut.
Min inlet pipe distance = 0.1 metre.
NOTE: The pressure loss for each elbow is:
90” elbow less 3 metre of pipe length for each one fit-
ted.
45” elbow less 1.5 metre
d
pipe for each one fitted.
For exhaust pipe with a distance of over 6 metre a
condensing trap must be fitted.
Exhaust/suction system with two separate pipes
through a single vertical wall.
Maximum distance D = I + E = Total
exhaust/inlet pipe 24 metre.
Min inlet pipe distance 0.1 metre.
Min exhaust pipe distance 0.1 metre.
NOTE: The pressure loss for each elbow fitted is:
90” elbow less 3 metre of pipe length for each one fit-
ted.
45” elbow less 1.5 metre of pipe for each one fitted.
For exhaust pipe with a distance of over 6 metre a
condensing trap must be fitted.
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