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NUVOLA3 COMFORT 280 Fi
NUVOLA3 COMFORT 140 Fi
NUVOLA3 COMFORT 240 Fi
NUVOLA3 COMFORT 320 Fi
N.B.:
For the C52 type, do not fit the flue and air duct terminals on opposite walls of the building. The air duct (for hori-
zontal flues) must have a maximum length of 10 metres (6 m for model 140 Fi).
If the discharge duct is longer than 6 metres, install the condensate collection kit, supplied as an accessory, near the boiler.
IMPORTANT:
if fitting a single flue duct, make sure it is adequately insulated (e.g.: with glass wool) wherever the duct
passes through building walls.
For detailed installation instructions, consult the technical data provided with the accessories.
16.4 HORIZONTAL SEPARATE FLUE INSTALLATION EXAMPLES
IMPORTANT -
Make sure there is a minimum downward slope towards the outside of 1 cm per metre of duct length.
If the condensate collection kit is installed, the discharge duct must slope down towards the boiler.
16.5 SEPARATE VERTICAL FLUE INSTALLATION OPTIONS
INSTRUCTIONS FOR FITTERS
POSITION OF
MAX. LENGTH
REGULATOR
L1+L2 (m)
0 ÷ 20
20 ÷ 30
0 ÷ 10
10 ÷ 20
20 ÷ 30
0 ÷ 20
20 ÷ 30
0 ÷ 10
10 ÷ 25
(L1 + L2) max = 30 m
(L1 + L2) max = 25 m for model 320 Fi
L max = 15 m
20
AIR
AFR
G20
G30
1
7,1
8,0
2
1
2
4,0
3
1
6,1
8,7
2
3
6,7
4
L max = 10 m
CO
%
2
G31
8,0
—
4,3
8,7
—
7,6
7864176 - en
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