Evacuating Products Of Combustion; Models For Indoor Installation - Riello MINI 17 LN NG Installation And User Manual

ENGLISH

3 4 Evacuating products of combustion

3.4.1 Models for indoor installation

For flue gas discharge, refer to Standards UNI 7129-7131. The flue gas
exhaust/air intake kit is not supplied with the boiler as accessories for
sealed-chamber forced-draught appliances, which better adapt to the in-
stallation context, can be used.
To extract the flue gases and restore the combustion air in the boiler,
use original piping or others with the same characteristics which are EC
certified and ensure that they are correctly connected as indicated in the
instructions provided with the flue gases accessories.
A single flue can be connected to several appliances provided that every
appliance is sealed chamber type.
The boiler is a type C appliance (with a sealed chamber) and must there-
fore have a secure connection to the flue gases exhaust pipe and com-
bustion air intake pipe which both flow outside, and without which the
appliance cannot operate.
"FORCED OPEN" INSTALLATION (B22-B52)
The flue gas exhaust pipe can be directed to the most suitable direction
according to installation requirements.
For installation, follow the instructions supplied with the kit.
In this configuration, the appliance is connected to the ø 80 mm flue gas
exhaust pipe by means of a ø 60-80 mm adaptor (Fig. 13).
b
In this configuration the combustion air is withdrawn from the room
where the appliance is installed, which should be technically suita-
ble and ventilated.
b
The non insulated flue gas outlet pipes are potential sources of
danger.
b
The table indicates the permitted linear lengths.
Maximum length
Model
Ø 80 mm (m)
11 - 13 15
Models 11-13
30
Loss of load (m)
45° bend 90° bend
1,2 1,7
Models 17
Fig. 13
COAXIAL DISCHARGES (60-100 Ø)
The boiler has been designed to be connected to concentric discharge/
suction pipes and with the opening for air suction ( D ) closed (Fig. 14).
Coaxial outlets can be pointed in the direction most suited to the specific
installation room, in line with the lengths shown in the table.
For installation, follow the instructions supplied with the kit.
b
The table indicates the permitted linear lengths.
Horizontal
Maximum length
Model
Ø 60-100 mm (m)
11 - 13 3,5
Vertical
Maximum length
Model
Ø 60-100 mm (m)
11 - 13 4,5
Models 11-13
D
D
SPLIT PIPE OUTLETS (80 Ø)
Twin outlets can be placed in the most suitable direction according to the
room requirements.
The combustion air intake pipe must be chosen from the two inlets ( E and
F ); remove the closure plug fixed with screws and use the specific adaptor
for the chosen input.
The air inlet adaptor Ø 80 ( E ) must be oriented correctly, so it must be
fixed with the relative screws, so that the positioning tab does not interfere
with the casing.
b
The table indicates the permitted linear lengths.
Maximum length
Model
Ø 80 mm (m)
11 - 13 15+15
Loss of load (m)
45° bend 90° bend
1 1,5
Loss of load (m)
45° bend 90° bend
1 1,5
Models 17
D
D
Fig. 14
Loss of load (m)
45° bend 90° bend
1,2 1,7