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Prior to installation
4.2 Combustion air openings
1
6
Openings for the combustion air must be provided in the installation room of the
gas condensing boiler.
Room air-dependent operation
The required cross-sectons for the combustion air openings with room air-depend-
ent operation are to be taken from the following table:
M
o
d
l e
POWER HT-A 1.430
POWER HT-A 1.500
POWER HT-A 1.570
POWER HT-A 1.650
Room air-independent operation
For room air-independent operation an upper and a lower combustion air opeingin
with a cross-section of at least 150 cm
Risk of poisoning due to escaping exhaust gas!
not be covered by any objects placed in front of them. Otherwise, it could possibly
lead to poisoning from escaping exhaust gas!
In addition damage to the boiler could occur.
r C
s o
- s
e s
t c
o i
n
f o
h t
e
o c
m
2
[cm
]
> 850
> 990
> 1130
> 1270
2
is necessary.
The combustion air openings must
b
u
t s
o i
n
o
p
e
n
n i
g
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