IDEAL Logic SYSTEM 15 Installation And Servicing page 17

13 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 seals.
horizontal Flue Terminal (600mm long) 'B' pack - contains: Flue turret, non telescopic single piece flue incorporating a terminal
and rubber wall seals.
horizontal Flue Terminal (1000mm long) 'B' pack - Flue turret, telescopic flue incorporating a terminal, rubber wall seals and instructions.
Note. If 'B' packs are used on their own (either 1 piece or telescopic), then they can be fitted horizontally as the flue inside is
designed to slope 1.5 degrees.
'D' pack - contains: 1 metre length of flue pipe (Functional length 950mm), 1 support bracket and instructions.
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 - UIN 155988 & 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
High Level Flue Outlet Kit
Balcony Flue Outlet Kit
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)
15, 18 & 24 kW appliances
30 kW Appliances
Total Maximum permissible Vertical Flue Length combining both Roof Terminal and 'D' Packs
15, 18, 24 & 30kW Appliances
powered Vertical Flue
15, 18, 24 & 30kW Appliances
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
'B' Pack Flue Type 60/100
Horizontal Flue Terminal
(600mm long) B Pack
Telescopic Flue B Pack
Horizontal Flue Terminal
(1000mm long) B Pack
Horizontal Flue Terminal
(1000mm long) B Pack cut 75mm
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.
Ideal Logic System -
Installation and Servicing
INSTALLATION
The resistance is the equivalent of 1 metre of flue pipe and therefore must be deducted from
any maximum flue length
The maximum permissible concentric flue length when using a standard (500mm) kit is 4.5 metres
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
Total Maximum: 9 metres - minus any flue kit options or bends
Total Maximum: 8 metres - minus any flue kit options or bends
Total Maximum: 7.5 Metres - minus any bends
Total Maximum: 5 Metres - Concentric Flue and 17m flue pipe only. For additional details
refer to the powered Vertical Instructions
Std Metric Brick 102.5mm wide
Minimum permissible Wall Thickness
Rear Flue Rear Flue + std-Off side Flue Rear Flue Rear Flue + std-Off side Flue
116 102.5
231 186
546 501
471 426
Maximum permissible Wall Thickness
102.5 501
186 429
501 761
426 686
456 456
384 384
716 716
641 641
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