DOMINA 80 E
30
Fig. 23
Ø80
Ø80
AIR
FLUE
1
2
Ø 80 Ø 80
3.08 Top Outlet: Two Pipe Flue System
3.08.1 Two pipe connection
Two separate ducts Ø80 for air intake and flue gas discharge can be directly connected to the boiler. After
conversion for top outlet (see 3.05) mount the separate outlet kit 1
Insert blanking plate
in remaining air intake
Connect flue duct to central hole Ø80 and air duct to left or right air intake hole Ø80. Insert blanking plate
2 in remaining air intake.
A wide number of accessories for two pipe systems are available from Ferroli (ref. to page 32-33). Before
installing your system please check via calculation table at 3.08.2 you are not exceeding the maximum
permissible length for the appliance.
Notes on two pipe system installation:
When using the two pipe system the flue discharge pipe must have a 25mm air gap when passing through
combustible materials.
Where the flue discharge pipe passes through the airing space of an airing cupboard it must be protected
by a non combustible guard or expanded metal giving an annular air gap of at least 25mm.
Where the flue discharge pipe passes through a wall containing cavity insulation, a non combustible sleeve
must be fitted. Additionally a gap of 25mm between the sleeve and the insulation should be provided by
cutting back the insulation or packing loose fill bead insulation with mineral fibre.
Where the flue pipe is run through an unheated roof space it should be insulated with non combustible
insulating material to prevent condensation.
The flue pipe should be supported at intervals of not more than 1.8m and the support should be preferably
below a joint.