Alpha Alpha CB Boiler User manual

Installation Instructions
Alpha CB/C/SY Boiler
Vertical FlueTerminal Assembly
Concentric (60/100) Flue System
(Kit Part No. 6.1000350)
KIT CONTENTS
1. GENERAL
a. ThefluesystemmustbeinstalledinaccordancewithBS5440:1;1990.
b. The boiler must be installed in accordance with the Installation
instructions supplied with the boiler.
c. The vertical flue terminal assembly is equivalent to a 1 m length of
flue.
d. Each 45° bend is equivalent to a 0.5 m length of flue.
Note: A 90° bend must not be used with the vertical flue.
e. Refer to the vertical flue options (Fig. 4) and ensure the flue length
does not exceed the equivalent of 4 m (including the terminal
assembly).
f. Additional flue lengths of 0.75 m and 1.0 m are available for extending
the flue up to a maximum equivalent flue length of 4 m (including the
terminal assembly).
g. The vertical flue terminal assembly may be connected directly to the
boiler adaptor.
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. 4).
i. When the flue length is more than 2.5 m, the flue restrictor (Fig. 1) must
be removed. - remove the screw securing it in the boiler adaptor and lift
out.
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 215 mm from this line as shown in Fig. 2.
Fig. 1
Fig. 2

Compiled and designed by Publications 2000, Tel [phone]/D131
Fig. 4
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.
c. Fit a 125 mm diameter weathering slate over the hole in the
roof. A suitable weathering slate (Part No. 6.1000380) is
available from Alpha Therm Ltd.
d. Position the vertical terminal assembly into the weathering
slate ensuring that the slate is located under the lip of the
terminal as shown in Fig. 3.
Note: Ensure that the minimum distances are maintained
(see Fig. 4). Do not secure the terminal into position at this
stage.
e. Assemble the flue ducts together and cut the outer air duct
and inner flue duct assemblies to the correct lengths, i.e. up
to the terminal.
f. Place the inner duct into the outer duct and fit the ducts to
the boiler, as shown in Fig. 3, using the clamps supplied.
g. Connect the terminal ducts to the flue assembly, as shown
in Fig. 3. Secure the inner ducts with the clamps supplied
before locating the outer duct clamp.
h. After assembling all of the ducts, check that the terminal is
correctly located above the roof.
Note: Ensure that the flue assembly is supported at roof
level using suitable brackets, and that the weathering slate
is fitted correctly. Fig. 3
These instructions have been carefully prepared but we reserve the right to
alter the specification at any time in the interest of product improvement.
© Alpha Therm Limited 2004.
Alpha Therm Limited.
Nepicar House,LondonRoad, Wrotham Heath,
Sevenoaks, Kent TN15 7RS
Technical Helpline: 0870 3001 964
email: [e-mail]
website: www.alpha-innovation.co.uk