Benchmark GulfStream A-CLASS Design And Installation Manual page 9

RIDGE TERMINAL FLUE KIT
4.0 INSTALLATION
3. Fit the 1000mm long concentric pipe to the
first to extend the flue into the roof space using
the clamps provided at each joint and ensure
the inner flue joint is pushed fully home.
4. Fit the concentric air inlet in the roof space,
see diagram opposite.If terminating the air inlet
at low level, ensure it is at least 300mm above
the top surface of any roof insulation.
Note : It is important that the air inlet is always
kept clear and if possible this should not
terminate adjacent to the roof access hatch.
5.Measure and cut, (if necessary) the first single
flue pipe away from the concentric flue/air
inlet, slip supports onto pipes as required
(see the diagram in 3.0 Design/Technical for
typical details),before pushing home firmly the
deburred pipe end into the pipe socket. When
making a joint, mark the socket depth on the
plain end of pipe and check the mark to ensure
the joint is pushed home fully.
6. Repeat the above procedure for any further
pipes/bends etc. until the pipework extends to
the ridge terminal,(temporarily support/secure
the pipe if necessary).
7. Connect the 60mm diam. single flue pipe
to the ridge terminal using the 60 x 80mm
adaptor provided. Ensure the vertical pipework
is adequatley supported at the connection to
the ridge terminal.
Pull terminal down while
8. Visually inspect and check each joint is
securing straps to the battons
pushed home fully. Ensure the flue also has a
minimum continuous fall back to the boiler of
50mm/metre.
9.Permanently secure the concentric and single
flue pipes at approximately 1 metre centres.
Ensure a bracket is provided adjacent to each
joint on horizontal pipes.
Note : The flue pipe must not rely on the ridge
terminal for support.
25mm gap min.
or metal batten
Fixing straps secured
Weather Cap
to roof battons
Page 9