Specification
3
Logano GB125 oil condensing boiler - Technical specifications are subject to change without prior notice.
18
3.10 Ventilation air systems (OC
43x
, OC
53x
, OC
63x
, OC
83x
)
Only Buderus ventilation air systems listed in the table
on the right are approved (including a combination of
both systems).
The permissible length of the ventilation air system for
the plastic DN60 system is reduced by
•
1.0 m per 45° bend
•
1.5 m per 90° bend
•
4 m per 1 m air hose (in combinations)
•
15 m when using a silencer
The maximum available negative pressure at the boiler
inlet hose is 200 Pa.
3.10.1 Silencers
If the ventilation air is drawn in via an outer wall connec-
tion, then the use of a silencer is strongly recommended.
If the ventilation air is drawn in via the roof, the silencer
may be dispensed with.
Balanced flue operation - maximum flue length (m)
flue system, plastic DN 80/125
Boiler size
OC
13
OC
33x
OC
53x
OC
43x
GA-K and
DO/DO-S
GAF-K
Combustion air pipe via outer
wall, LAS ventilation shaft
Variant 1
Variant 2
Variant 1
Variant 2
according to
EN 13 364-1
GB125
18
5.0
11.5
11.5
21.5
20.1
22
5.0
15.5
15.5
25.0
24.9
30
5.0
19.5
18.0
20.5
18.0
35
5.0
21.5
20.0
22.4
20.1
Open flue operation - maximum flue length (m)
flue system, plastic DN 80/125
Boiler size
B
23x
GA
GN
Variant 1
Variant 2
according to
EN 13 384-1
GB125
18
25.0
25.0
22
25.0
25.0
30
19.5
18.0
35
21.5
20.0
Tab. 17 Maximum flue length
Variant 1: Chimney entry: 1 bend, connection piece L=1.5 m
Variant 2: Chimney entry: 1 bend, connection piece L=1.5 m, 1 90° bend, 1 tee
Maximum length from
boiler rear panel
m
Air hose Santo SL DN 63
Flexible air hose, 4 m long, incl. hose
connector
1
and 2 special hose clips
8
2
Plastic plug-in system DN60
Straight pieces 250, 250
1
, 500,
1000, 1500, 2000 mm long, 45° and
90° bends plus silencers1 are avai-
lable
35
Tab. 18 Approved ventilation air systems
(Buderus accessory)
1
with test port
2
incl. silencer max. 4 m
