Flue Installation - Buderus 800-24 Installation And Servicing Instructions

1.8

Flue installation

The only flue systems that may be used are those supplied by
Buderus. The flue system must be installed in accordance with
the requirements of BS5440:1. 2000.
Standard 125 mm flue systems
See subsection 1.3.3 for the maximum horizontal straight
length of each type boiler. Full instructions for fitting this flue
are in Section 1.8.2: "Installation of the horizontal flue" on
page 15.
IMPORTANT
Any horizontal flue system fitted to a
condensing boiler must be incline towards the
appliance at an angle of 3% (30 mm per metre
length) to prevent condensate dripping from
the flue terminal.
This means that the clearance above the
appliance must be increased to match the duct
length. See figure on page 6.
1.8.1 Fitting the boiler's adaptor plate
Place the boiler's adaptor plate onto the boiler (fig. 13).
Secure with 6 screws.
1.8.2 Installation of the horizontal flue
The standard 125 mm diameter horizontal flue system is
suitable for length upto 595 mm. Flue length above this will
require extension duct assemblies.
See table 2 on page 10 for the maximum pipe length for each
type boiler.
NOTE
Use the wall-mounting template to help you
mark the position of the side flue opening
Subject to modifications resulting from technical improvements !
Installation and servicing instructions condensing gas boiler 800 - 24/29/43/60 and 800 - 24T25/29T25 H/V • edition 02/2006
fig. 13 Adaptor plate
fig. 14 Elbow with flue gas testing point
Flue
Turret
Maximum 595 mm
fig. 15 Standard flue
Installation
Terminal
assembly
Outer
Wall
Buderus • http://buderus-domestic.co.uk
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