7
OUTLET (C53) - PART NO. 956080
2.7
KIT F: SPLIT PIPE VERTICAL FLUE
This flue system kit is designed for installations where the air intake position is
different from the flue duct exit point. The kit comprises a twin adaptor from
which the air intake is taken from the adjacent outside wall (see example
Figure 3g) and the flue duct is routed vertically through the roof.
It has to be noted that the flue duct is under pressure when the appliance is
in operation and the duct can leak poisonous carbon monoxide if the duct
components are not correctly assembled. It is not recommended to route the
flue duct through living space areas, i.e. bed rooms, living rooms etc.
For C5 flue systems the terminals for the supply of combustion air and for the
evacuation of combustion products shall not be installed on opposite walls of
the building.
For installation details refer to the instructions provided with the twin flued kit.
Maximum flue resistance permitted for a twin flued
system = 100 Pa
Minimum flue resistance permitted for a twin flued
system = 74 Pa
Flue Component
Flue Resistance (Pa) Part Number
Twin Flue Adaptor (required)
30
-
Air Inlet Terminal (required)
9
-
Flue Outlet Terminal (required)
27
-
80 mm diameter straight duct
2/metre
956102
90° Elbow (80/80) (Required)
8
956100
45° Elbow (80/80)
4
956099
Ø80mm air intake
Split flue system
Roof terminal with pitched
roof flashing kit.
If the flue pipe passes
through compartment
from wall/floors, the
requirements set out
in Building Regulations
Part B must be followed.
Ø80mm twin adaptor
with sampling point.
If the flue pipe passes
through habitable rooms
within the same dwelling,
the flue pipe must be
routed through vented
air ducts.
Max. flue length 30m.
The flue resistance for the
following accessories has
to be considered.
Ø80mm flue extension
90 elbow
45 elbow
Split pipe vertical
flue outlet kit -
Part no. 956080
Kit F
3g
A flue system can be built up from the components
detailed in the table, but the total flue resistance must
not exceed the maximum stated.
!
!
The following additional concentric kits are available as optional
extras.
Flue Extension Ducts
- 1000 mm and 500 mm long, (each
duct extends the flue length by up to 950 mm and 450 mm
respectively).
93° Extension Elbow
- Allows an additional bend in the flue,
and has an 'equivalent length' of 1550 mm. This elbow is
mechanically different from the flanged elbow supplied as
standard with the appliance, but has the same equivalent length.
45° Extension Elbow
- Allows an additional bend in the flue
and has an 'equivalent length' of 775 mm.
Vertical Turret Socket
- For use with elevated horizontal flues
and vertical terminals.
Vertical Roof Terminal
- For use where an external wall is not
available, or where it is desirable to route the ducts vertically.
For installation details refer to the instructions
provided with the individual flue kits.
The 'equivalent' flue length must not exceed the
maximum values stated.
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:
b)
The standard terminal must always be fitted horizontally;
horizontal ducts must have a continuous fall towards the
appliance of 2.5°. 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
vertical flue turret 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).
Horizontal flue terminal (all orientations) maximum 5000 mm (197 in)
Horizontal flue terminal (rear exit)
minimum 250 mm (10 in)
Vertical flue terminal
maximum 12000 mm (472 in)
Vertical flue terminal
minimum 600 mm (23
1
/
2
in)
2.8
ADDITIONAL CONCENTRIC FLUE KITS
30
38
GAS VALVE MOUNTING PLATE
39
FAN MOUNTING SCREWS
Refer to Figures 40, 41 & 42
a)
Ensure supply voltage is isolated, and that the gas supply is
isolated.
b)
Remove the gas control valve, fan & burner assembly; refer to
section 6.2.
c)
Unscrew the three tork screws, (T-25), holding the manifold to
the combustion chamber front cover, and remove the manifold;
refer to Figure 40.
d)
Remove the gasket, and withdraw the burner; refer to Figure 41
e)
Fit replacement burner, taking care not to damage the
insulation, and ensure burner is correctly located by lining up the
locating tab.
f)
Fit new gasket; refer to Figure 42.
g)
Re-assemble in reverse order; ensure that all joints and seals
are correctly re-fitted.
9.5
BURNER
42
BURNER GASKET
40
MANIFOLD MOUNTING SCREWS
41
WITHDRAWING BURNER
