Alpha CD Condensing Boiler Installation Instructions

Installation Instructions

Alpha CD Condensing Boiler
CD Vertical Flue Terminal Assembly
Concentric (60/100) Flue System

1. GENERAL

Note: The CD Vertical flue terminal MUST ONLY be used with an Alpha CD condensing boiler.
a. The flue system must be installed in accordance with BS 5440:1;1990.
b. The boiler must be installed in accordance with the Installation instructions supplied with the CD boiler.
c. The vertical flue terminal assembly is equivalent to a 1 m length of flue.
d. Each 45° bend is equivalent to a 0.9 m length of flue.
Note: A 90° bend must not be used with the vertical flue.
e. Refer to the vertical flue options (Fig. 3) and ensure the flue length does not exceed the equivalent of 15 m
(including the terminal assembly).
f. Additional flue lengths of 0.75 m (CD flue extension, Part No. 6.2000750) are available for extending the flue up to a
maximum equivalent flue length of 15 m (including the terminal assembly).
g. The CD vertical flue terminal assembly may be connected directly to
the boiler adaptor. However, under no circumstances must it be
shortened.
h. To determine the actual length of flue required (L), measure the
distance from the top of the side panel to the weathering slate position
and subtract 640 mm for the terminal assembly, i.e. L = A - 640 mm
(see Fig. 3).
2. INSTALLATION
a. When the template is on the wall in the boiler position, continue the
vertical line from the centre of the flue hole to the roof/ceiling position.
Mark the centre position of the flue hole 165 mm from this line as
shown in Fig. 1.
b. Cut a hole and/or remove tiles so that there is at least a 150 mm
diameter hole in the roof. Ensure there is at least a 25 mm gap
between the outer duct and any combustible material.
(Kit Part No. 6.2000520)
KIT CONTENTS
Fig. 1