Fitting The Flue System; Flue Restrictors; Choice Of Flue - Biasi RIVA COMPACT M90E.24S User Manual And Installation Instructions

Installation
6.7

Fitting the flue system

Refer to the assembly instructions contained with-
in the chosen flue kit packaging for the correct as-
sembly and installation.
6.8

Flue restrictors

Two restrictors with different size are supplied
with the boilers M90E.24S and M90E.28S.
A 44 mm size is fitted to the boiler and a 47 mm
size is supplied in a separate bag.
Two restrictors with different size are supplied
with the boiler M90E.32S.
A 47 mm size is fitted to the boiler and a 50 mm
size is supplied in a separate bag.
The size is marked on the restrictor body.
For the correct use of the restrictors with co---axial
pipes ø 60/100 mm refer to:
Tab. 6.2 for models M90E.24S and M90E.28S
Tab. 6.3 for model M90E.32S
For the correct use of the restrictors with vertical
roof kit ø 80/125 mm refer to:
Tab. 6.4 for models M90E.24S, M90E.28S
Tab. 6.5 for the model M90E.32S
For the correct use of the restrictors with twin
pipes refer to Fig. 6.8 for the models M90E.24S;
and M90E.28S, refer to Fig. 6.9 for the model
M90E.32S.
Model M90E.24S, M90E.28S
Equivalent length (ø 60/100)
Between 0,3 and 1 m
More than 1 m up to 2 m
More than 2 m up to 3 m
Tab. 6.2 FOR CO---AXIAL STANDARD FLUE
Model M90E.32S
Equivalent length (ø 60/100)
Between 0,3 and 1 m
More than 1 m up to 2,7 m
Tab. 6.3 FOR CO---AXIAL STANDARD FLUE
Models M90E.24S, M90E.28S
Equivalent length (ø 80/125)
Between 0,5 and 1,5 m
More than 1,5 m up to 6,5 m
More than 6,5 m up to 8,5 m
Tab. 6.4 FOR VERTICAL ROOF KIT
Model M90E.32S
Equivalent length (ø 80/125)
Between 0,5 and 4 m
More than 4 m up to 6 m
Tab. 6.5 FOR VERTICAL ROOF KIT
The appropriate restrictor, when necessary, must
be fitted in the flue outlet elbow as indicated in
Fig. 6.5.
Fig. 6.5
Restrictor
6.9
ø 44 mm
The following flue kits are available for connecting
ø 47 mm
to the boiler:
no restrictor
Standard horizontal flue kit (Fig. 6.6A)
Co--- axial 60/100mm --- nominal length 1m
This kit is normally supplied with the boiler and can
be fitted to allow discharge to the rear or either
side of the boiler via the flanged boiler adapter
Restrictor
elbow. Minimum length required is 0.3 m. Maxi-
ø 47 mm
mum equivalent length of 3 metres for models
M90E.24S, M90E.28S and 2,7 metres for the
no restrictor
model M90E.32S can be achieved utilising exten-
sions. This flue system can only be used to dis-

Choice of flue

Restrictor
ø 44 mm
ø 47 mm
no restrictor
Restrictor
ø 47 mm
no restrictor
23