Vertical, Concentric Air/Flue Gas Routing Above The Roof With The Do Set (Dn110/160) For Logamax Plus Gb162-45, Gb162-50, Gb162-65, Gb162-80 And Gb162-100 - Buderus Logamax plus GB162 Technical Manual

10.3 Vertical, concentric air/flue gas routing above the roof with the DO set (DN110/160)
for Logamax plus GB162-45, GB162-50, GB162-65, GB162-80 and GB162-100
Appliance type C
33x
The Logamax plus GB162-50/65/80/100 requires a
specific installation room, according to
Muster-Feuerungsverordnung [Germany], if the output
has not been restricted to 50 kW (
Observe the general information on page 132 ff.
Logamax plus Maximum
permissible
total length L
[m]
GB162-45 26.5
GB162-50 25
GB162-65 23
GB162-80 14
GB162-100 15.5
Table 64 Maximum permissible total flue length
( fig. 127)
1) Up to three reductions for additional bends or inspection bends
can be taken into consideration; more than three must be
checked on an individual basis
Air/flue gas line inside a shaft or inside a
protective pipe
In accordance with the Technical Rules for Gas
Installations DVGW-TRGI 2008 [Germany], floors may be
bridged if the air/flue gas line complies with the criteria
described here.
If only the roof structure lies above the installation room,
then encase the air/flue gas line between the upper edge
of the ceiling inside the installation room and the roof skin.
A non-combustible rigid material or a protective metal
pipe will be suitable for the casing. If a level of fire
resistance has been specified for the ceiling, then the
same applies to the casing.
When bridging floors, allow for a shaft with fire resistance
category L 30 (F 30) or L 90 (F 90) for the air/flue gas line
outside the installation room up to the roof skin
( fig. 127). For this, use only approved shaft structures
(by Promat, for example).
Minimum clearances and inspection apertures
Allow for inspection apertures in accordance with
regulations ( page 137). On the roof, maintain minimum
clearances towards windows (
6 720 645 821 (2010/09) – Logamax plus GB162
page 132).
Reduction of the total
length for each additional
1)
pipe diversion
[m]
L – 1.5
L – 1.5
L – 1.5
L – 1.5
L – 1.5
fig. 129).
Flue systems for balanced flue operation
DO set
≥ 400
Fig. 127 Installation version (dim. in mm)
A Flue gas
B Ventilation air
1)
400 mm sufficient if the output is restricted to 50 kW
2)
Shaft L 30 (F 30) or L 90 (F 90)
10
A
≥ 1000 1)
6
B B
8
2)
3
2
1
9
L
2)
DN110/160
9
6 720 642 463-83.1il
141