Baxi PRIME Series Installation Manual page 24

6.5.2 Concentric exhaust duct
=
395
There are two types of connector for concentric exhaust ducts, (A) and (B). The vertical duct (A) permits the insertion of a vertical
concentric exhaust duct or a concentric curve at 90° or 45° for connecting the boiler to the flue and air ducts in any direction as it
can be turned by 360°. The connector (B) is a concentric curve at 90° designed for installations where there is limited space at the
top between the boiler and the wall flue outlet.
If fumes are discharged outside the building, the flue-air duct must protrude at least 18 mm from the wall to allow a weathering
surround to be fitted and sealed to avoid water infiltrations.
Secure the intake pipes with two galvanised screws with a diameter of 4.2
mm and a maximum length of 16 mm.
Before securing the screws, make sure that at least 45 mm of the pipe is
inserted into the gasket.
Make sure there is a minimum downward slope of 5 cm per metre of duct
towards the boiler.
INSTALLING THE CONCENTRIC EXHAUST CONNECTOR
Position the connector as shown in the figure and turn it clockwise to secure it on the boiler.
7696306 (01-12/17)
A
=
120
279
=
395
BO-0000049
24
B
120
=
279
BO-0000018
BO-0000030