Ideal Boilers INDEPENDENT+ COMBI 24, Installation & Servicing

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21
Installation and Servicing
FLUE OUTLET
SECTION 2 - INSTALLATION
2.9 DETERMINING THE FLUE LENGTH AND FLUE PACKS REQUIRED
IMPORTANT. The boiler must be installed in a vertical position
in accordance to the installation instructions.
FLUE KITS
Telescopic Flue‘B’ Pack - contains: Flue turret, telescopic flue
incorporating a terminal and rubber wall seal.
Horizontal Flue Terminal (600mm long) ‘B’ Pack - contains:
Flue turret, non telescopic single piece flue incorporating a
terminal and rubber wall seal.
Horizontal Flue Terminal (1000mm long) ‘B’ Pack - Flue turret,
telescopic flue incorporating a terminal, rubber wall seal and
instructions.
Note. If ‘B’ packs are used on their own (either 1 piece or
telescopic), then they MUST fitted horizontally as the flue inside
is designed to slope 1.5 degrees.
When extension ‘D’ Packs are used the flue duct must incline
1.5 degrees away from the appliance, to allow the condensate
to drain back to the boiler and out of the condensate drain. It is
recommended that a support bracket is fitted on every 1 metre of
pipe work used and the bracket is located as close to the collar
as possible. The bracketing must ensure a 1.5 degree fall back
to the appliance.
Optional Flue Finishing Kit - Concentric Flue Screw
Retaining Kit (Optional Kit of mechanical fixing of flue joints)
Only use water as a lubricant during assembly.
The ‘B’ pack terminal is classed as part of the maximum flue length.
These flue systems incorporates a removable flue outlet
nose that utilises a push fit location system. This enables the
installation of deflector, high level or balcony flue kits without
the removal of the whole ‘B’ pack terminal. The appliance must
not be operated without the desired outlet nose correctly fitted
in place, ensuring the side location dimples are in line with the
mounting face allowing the correct sealing of the components.
It is IMPORTANT that all attachments are fitted in accordance
to the installation instructions provided with them.
The TURRET supplied in the ‘B’ Pack has an upper combustion
sample point with a screw cap seal and a lower air sample
point with an air stopper seal. Ensure all caps & seals are in
place.
Additional Termination Kits available for use with these ‘B’ packs.
Flue Deflector Kit The resistance is the equivalent of 1 metre of flue pipe and therefore must be deducted from
any maximum flue length
High Level Flue Outlet Kit The maximum permissible concentric flue length when using a standard (500mm) kit is 4.5 metres
Balcony Flue Outlet Kit The maximum permissible concentric flue length when using this kit is dependant on the length
of the balcony flue outlet run which combined with the concentric run must not exceed the
maximum flue length requirement of the appliance it is to be fitted to
Soffit Kit This kit enables fitment of an external flue below soffits.
Total Maximum Permissible Horizontal Concentric Flue Length
combining both ‘B’ Packs and ‘D’ Packs
(Measured from centreline of the turret to the outside of the wall terminal)
24 kW appliances Total Maximum: 9 metres - minus any flue kit options or bends
30 kW Appliances Total Maximum: 8 metres - minus any flue kit options or bends
35 kW Appliances Total Maximum: 6 metres - minus any flue kit options or bends
Total Maximum Permissible Vertical Flue Length
combining both Roof Terminal and ‘D’ Packs
24, 30 & 35kW Appliances Total Maximum: 7.5 Metres - minus any bends
Powered Vertical Flue
24, 30 & 35kW Appliances Example: 5 Metres - Concentric Flue and 17m flue pipe only. For additional
configurations and details refer to the powered Vertical Instructions
90º Elbow Kit 60/100 - (Equivalent flue length resistance = 1M )
45º Elbow Kit 60/100 - (Equivalent flue length resistance = 0.6M )
Minimum Horizontal Flue Lengths (Centre line of turret to outside of wall terminal)
Telescopic Flue ‘B’ Pack = 400mm
Horizontal Flue terminal (600mm long) ‘B’ Pack = 285mm
Wall Thickness
Std Metric Brick 102.5mm wide
‘B’ Pack Flue Type Minimum permissible Wall Thickness Maximum permissible Wall Thickness
Rear Flue Rear Flue + Std-Off Side Flue Rear Flue Rear Flue + Std-Off Side Flue
Horizontal Flue Terminal
(600mm long) B Pack
126* 102.5 102.5 501 456 456
Telescopic Flue B Pack 231 186 186 429 384 384
Horizontal Flue Terminal
(1000mm long) B Pack
546 501 501 761 716 716
Horizontal Flue Terminal
(1000mm long) B Pack cut 75mm
471 426 426 686 641 641
* If wall thickness is <126 and >102.5, contact Ideal Boilers.
For Flue lengths between 658 & 708 use a Horizontal Flue Terminal (1000mm long) B Pack, cut 75mm off the end of the
terminal section of the telescopic flue only.