Additional Concentric Flue Kits - Biasi RIVA OV M110.18SM/OV User Manual And Installation Instructions

2.5.3 Anti-pluming kit
If the standard horizontal flue kit is likely to
cause nuisance to neighbours or buildings,
because of excess pluming, then this particular
flue kit raises the flue gas outlet point to a higher
elevation with the minimum amount of changes.
The flue gas duct is teed-off from the concentric
part and the air in-take remains at the lower level
(see Figure 3.2.).
If choosing this option then the external flue duct
length should be taken into account when
calculating equivalent flue length.
For installation details refer to the flue kit
instructions.
Fig. 3.2.
2.6

Additional Concentric Flue Kits

The following additional concentric kits
available as optional extras.
Flue Extension Ducts - 1 m and 500 mm long,
(each duct extends the flue length by up to 950
mm and 450 mm respectively).
Raised Horizontal Flue - For use with elevated
horizontal flues.
For installation details
provided with the individual flue kits.
are
refer to the instructions
These optional kits may be used with the
standard flue kits to produce an extensive range
of flue options, providing that the following rules
are strictly obeyed.
a) The maximum/minimum permissible length of
the room sealed flue system are:
Horizontal flue terminal (all orientations)
maximum 10 m (393 in)
Horizontal flue terminal (rear exit)
minimum 250 mm (10 in)
Vertical flue terminal
maximum 12 m (472 in)
Vertical flue terminal
minimum 600 mm (23.5 in)
The 'equivalent' flue length must not exceed
the maximum values stated.
b) The standard terminal must always be fitted
horizontally; horizontal ducts must have a
minimum continuous
appliance of 1.5°. This ensures condensate
runs back into the appliance from the flue
system. The vertical terminal must always be
used if a vertical outlet is required.
c) The concentric flue system must use either a
flanged elbow or a raised horizontal flue
socket at the entry/exit to the appliance.
d) All joints must be correctly made and
secured in accordance with the installation
instructions. When cutting ducts, avoid
swarf, uneven and sharp edges to maintain
duct integrity.
Refer to Figures 2 and 3 to determine which
option kits are required before commencing
the installation. Instructions for installing the
appliance with a horizontal flue and straight
extension ducts are included in the main text
of these instructions (section 4.7).
fall towards the
9