Installation
1
Installation and servicing instructions condensing gas boiler 800 - 24/29/43/60 and 800 - 24T25/29T25 H/V • edition 02/2006
15
Subject to modifications resulting from technical improvements !
Buderus • http://buderus-domestic.co.uk
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.
1.8.1
Fitting the boiler's adaptor plate
z
Place the boiler's adaptor plate onto the boiler (fig. 13).
z
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.
fig. 13 Adaptor plate
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.
fig. 14 Elbow with flue gas testing point
fig. 15 Standard flue
Flue
Turret
Maximum 595 mm
Terminal
assembly
Outer
Wall
NOTE
Use the wall-mounting template to help you
mark the position of the side flue opening
