Morco GB24 - Determining Maximum Flue Length

18
SECTION 5 - INSTALLATION INSTRUCTIONS
5.9 DETERMINING THE FLUE LENGTH
IMPORTANT. The boiler must be installed in a vertical position in accordance to the installation instructions.
STANDARD FLUE KITS
Horizontal Flue Terminal RSF303 (600mm long) - contains: Flue turret, non telescopic single piece ue incorporating a terminal
and inner rubber wall seal.
Extension Kit RSF341 - contains: 1 metre length of ue pipe (Functional length 950mm), 1 support bracket.
Whenextensionkitsareusedtheue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tted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.
Only use water as a lubricant during assembly.
The horizontal ue kit terminal is classed as part of the maximum ue length.
Once the ue is installed it is IMPORTANT that the white air duct protrudes from the aluminium ue collar (RSF 060) by at
least 17mm. The gap between the aluminium ue collar (RSF 060) and the white air duct MUST be sealed with sealant to
create an adequate seal.
WALL
Aluminium Flue
Collar (RSF 060)
Fill with
sealant
17mm min
Internal Sealing
Flubber
Fill with
sealant
It is IMPORTANT that all attachments are tted in accordance with the installation instructions provided in this manual.
The turret supplied in the Horizontal Flue Kits (RSF303 & RSF305) 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 Horizontal Flue Kits (RSF303 & RSF305)
Flue Deector Kit (RSF300) The resistance is the equivalent of 1 metre of ue pipe and therefore must be deducted from
any maximum ue length
Total Maximum Permissible Horizontal Concentric Flue Length combining both Horizontal Flue Kits and Extension Kits
(Measured from centreline of the turret to the outside face of the aluminium ue collar (RSF060))
24 kW appliances Total Maximum: 8 metres - minus any ue kit options
30 kW Appliances Total Maximum: 7 metres - minus any ue kit options
Total Maximum Permissible Vertical Flue Length
24 & 30kW Appliances Total Maximum: 7.5 Metres - minus any 90º bends
Minimum Horizontal Flue Lengths (Centre line of turret to outside face of the aluminium ue collar (RSF060))
Rear Flue - 191mm
Side Flue - 236mm (with minimum 2.5mm clearance)