27
9.2 Grant Green System
This vertical twin wall stainless steel
insulated flue system – constructed
using components from the Grant
Green system – connects to a Grant
Starter elbow and may terminate at
high level or vertically (above the roof)
as required. See Figure 9-2.
The insulated Starter elbow provides
the boiler connector, complete with test
point, replacing the low level terminal
and flue guard supplied with the boiler.
9.3 Grant Hybrid System
This vertical option allows the use of
an existing chimney using part of the
‘Green’ system and the flexible liner and
terminal of the Grant ‘Orange’ system.
See Figure 9-3.
If an existing chimney is to be used,
it must be lined with a smooth bore
stainless steel liner suitable for use with
oil fired condensing boilers. The top
and bottom of the annular space must
be sealed.
Grant recommends the use of the
Grant ‘Orange’ flue system, specifically
designed for the VORTEX range of
condensing boilers.
The internal flue and liner diameter for
all combi models must be 100mm (4
in).
The maximum vertical height (from the
top of the boiler to the terminal) for the
‘Orange’ system is 19 metres.
Figure 9-2:
Outdoor high level flue (Green system)
Components for external flue system
(Green System)
Vertical terminal kit
45° elbow kit
Extensions
Outdoor starter elbow
Outdoor starter - straight
Straight terminal
High level 90º terminal
Extended wall bracket
Wall bracket
Locking band
typical Flue
System
Outdoor
Combi
The Grant Orange system flexible
stainless steel liner is directional. The
arrows marked on the liner MUST
be pointing vertically upwards,
following the direction of the flue
gases. Failure to comply with this
instruction could lead to a leakage of
condensate from the flue liner.
In order to correctly connect the
Grant hybrid system to the boiler,
it will be necessary use the Grant
Starter Elbow.
This insulated Starter elbow provides
the boiler connector, complete with
test point, replacing the low level
terminal and flue guard supplied with
the boiler.
!
nOtE
!
nOtE
