Fitting A Vertical Flue System; Plume Management Kit; Flues In Voids; Installation And Operation Manual - Daikin Altherma EHYKOMB33AA Installations- Und Bedienungsanleitung

9.4.9

Fitting a vertical flue system

A vertical 60/100 mm flue kit is also available. By using additional
components available from your boiler supplier, the kit can be
extended up to a maximum length as specified in the table indicating
the maximum pipe lengths (excluding the initial boiler connection).
CAUTION
Read the installation manuals of the field supplied parts.
9.4.10

Plume management kit

See the local and national regulations.
Especially for UK:
The plume management kit comprises of a 710 mm horizontal
section elbow to connect the 500 mm vertical condensing tube,
which has a horizontal or vertical terminal dependant on your
requirements. The maximum length of the horizontal flue including
the terminal but excluding the initial elbow from the boiler and
500 mm vertical condensing tube is 7 m.
NOTICE
For each additional 90° elbow used the maximum flue
length MUST be reduced by 1.5 m whilst the use of 2× 45°
bends warrants a reduction of 2 m.
The horizontal part of the flue MUST be installed under a 3° fall
towards the boiler (5 mm per m) and MUST be supported with a
minimum of 1 bracket at each 1 m length. Best recommended
position of the bracket is just before the joint.
CAUTION
▪ Sealing rings should ONLY be moisturized with water
before use. Do NOT use soap or other detergents.
▪ When installing flues in voids, make sure that they are
connected and fixed correctly. If in an existing situation
a visual inspection is NOT possible, the boiler must
NOT be commissioned and remain disconnected from
the gas supply until suitable access has been realised.
▪ Make sure to follow the manufacturer's instructions
regarding maximum length of the flue system, the
appropriate flue material, correct jointing methods and
the maximum distance between flue support.
▪ Make sure that all joints and seams are gastight and
watertight.
▪ Make sure that the flue system has a uniform gradient
back to the boiler.
EHYKOMB33AA
Daikin Altherma hybrid heat pump – gas boiler module
4P353067-1L – 2022.09
9.4.11

Flues in voids

Especially for UK:
The flue system must be connected in accordance with the
manufacturer instructions before firing the boiler.
The term void includes ceiling voids, floor voids, purpose built
enclosures, service risers, roof spaces or any other enclosure that
will restrict access to inspect the flue.
To allow visual inspection, without reliance on devices such as
endoscopes, cameras and mirrors, inspection hatches must be
provided along the entire length of the flue.
Hatches must be a minimum of 300 mm×300 mm and positioned
with the edge of the inspection hatch to 1.5 m of any joint and at
changes of direction. Bends should be viewable from both directions
where the inspection hatch cannot be positioned at the bend.
Where suitable access is not provided the appliance must NOT be
commissioned and must be disconnected from the gas supply.
Additionally the entire flue and all flue seals must be installed in
accordance with the requirements of BS5440:
▪ Check if the condensate trap is filled with water and correctly
connected to the boiler.
▪ All flue joints are correctly made, unstressed and adequately
supported.
▪ All parts of the flue can be visually inspected. Ensure suitable
access where flue is positioned within voids.
9.4.12 Flue gas materials (C63) available on the
market
The properties of the combustion determine the choices for the flue
material. The standards EN 1443 and EN 1856‑1 provide the
necessary information for choosing the flow material by means of a
sticker including an identification string. The identification string
needs to contain the following information:
9 Unit installation

Installation and operation manual

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