Buderus 800-24 Installation And Servicing Instructions page 10

1 Installation
1.3.2 Air supply and flue gas exhaust in a closed
installation
To ensure optimal operation, the 800 Series appliances must
be connected to a Buderus wall-mounted or roof-mounted flue
terminal. These terminals have been developed specifically for
the 800 Series condensing gas boilers and have been
comprehensively tested. The Buderus wall and roof-mounted
flue terminal kits ensure trouble-free operation.
The following items for the flue (see fig. 2) are included in the
delivery of the boiler:
– pos. 1: 1 Concentric bend 80/125;
– pos. 2: 1 Horizontal flue terminal 80/125;
– pos. 3: 1 Flue finishing kit.
1.3.3 Maximum Flue length
The maximum pipe length of the air supply and flue gas
exhaust pipes for the 800 Series condensing gas boilers (see
table 2) is determined by the total pressure loss of all
components in the flue gas exhaust / air supply system.
Maximum wall thickness without extensions is 550 mm.
Maintain a minimum side wall clearance of 50 mm (see fig. 3).
1.3.4 Additional flue parts
Additional flue parts (see table 3) can be ordered from your
supplier.
Subject to modifications resulting from technical improvements !
10 Installation and servicing instructions condensing gas boiler 800 - 24/29/43/60 and 800 - 24T25/29T25 H/V • edition 02/2006
1
fig. 2 Horizontal flue pack
fig. 3 Side flue and rear flue installation
Maximum
Boiler
pipe length
800 – 24 / 24T25 H/V L = 14 m
800 – 29 / 29T25 H/V L = 14 m
800 – 43 L = 14 m
800 – 60 L = 9 m
Table 2 Pipe length
Flue parts
Concentric pipe, 500 mm long, adjustable
Concentric pipe, 1000 mm long, adjustable
Concentric bend 90°
Concentric bend 45°
24-43 kW adaptor plate
60 kW adaptor plate
Table 3 Additional flue parts
2
3
L
550 mm
50 mm
For every 90° bend the
maximum pipe length has
to be reduced by
0 m
0 m
1.5 m
1.5 m
Order No.
NE 83713
NE 83714
NE 83715
NE 83716
NE 79061
NE 79064
Buderus • http://buderus-domestic.co.uk