16
xtra
-
Installation & Servicing
INSTALLATION
REAR VIEW
Flue
Sampling
Point
Air inlet duct O110
A
F
B
C
D
E
See Table on page 5 for guidance on maximum permissible
flue and air duct system design.
FLUE
Construct either the horizontal or vertical combined flue outlet
ductwork to create the manifold arrangement depicted. The
horizontal combined flue outlet can be installed with its outlet
facing left or right dependent upon the demands of each
particular installation.
A tube of ductwork seal lubricant is provided within the flue kit.
To ease flue connections lubricate all flue seals before
assembly. Flue sampling points are fitted within the ductwork
legs A and B as depicted to facilitate flue products sampling of
each boiler module.
IMPORTANT NOTES.
1.
The flue manifold should be supported in such a way as
not to place load on the boiler module flue outlet sockets.
Propriety flue duct brackets must be used to provide
support as appropriate.
2.
Unless the connecting flue is manufactured from
aluminium the condensate generated within the flue must
be collected and drained before entering the combined flue
outlet ductwork. When employing the vertical combined
flue outlet header, a flue condensate drain is provided for
this purpose.
12 FLUE / AIR DUCT INSTALLATION
KEY
A
Flue Tube
D
Bend x 45
o
B
Flue Tube
E
Connector
C
Bend x 87
o
F
Adaptor
REAR VIEW
Flue
Sampling
Point
A
D
B
C
im9161
Air inlet duct O110
AIR DUCT
Combustion air can be drawn directly from the boiler room
using the high level air inlet kit provided or ducted in from
outside the building in which the boiler is installed.
IMPORTANT NOTE. If combustion air is drawn from within the
boiler room, ensure no dust or airborne debris can be
ingested into the appliance. Dusty concrete flooring should
be sealed to reduce the presence of dust. Ideally where
possible duct the air supply into the boiler room from a clean
source outside the boiler room / building.
To draw air direct from outside, connection can be made using
separate ducts to each boiler Module. This can be done using
any propriety 110mm soil / drain pipe. Expansion to a larger
diameter may be required to reduce resistance, dependant on
total flue / air duct lengths required. (See Flue System Design
on Page 5). The air duct should be terminated with a suitable
fixed grille to prevent entry to vermin. This terminal should be
positioned as such to avoid blockages or entry of water.
An optional RS duct connector kit allows for the two individual
module air inlet connections to be combined into a single
200mm boiler air supply connection to simplify installation and
increase permissible air duct length (F320 and F400 only)
HORIZONTAL FLUE HEADER ARRANGEMENT
KEY
A
Flue Tube
C
Flue Tee Manifold
B
Flue Tube
D
Flue Condensate Drain Trap
VERTICAL FLUE HEADER ARRANGEMENT
INST
ALLA
TION
