Halstead Ace High - Concentric Air;Flue Duct Specifications

3
The appliance is supplied complete with a standard telescopic flue
kit. This comprises a standard duct and a terminal duct and can
be used for flue lengths between 506mm and 820mm without
cutting the ducts. To use terminal duct for flue length between 300
and 506 mm the ducts need cutting. Avoid swarf and sharp edges
to maintain telescopic function
The following additional concentric kits are available as optional extras.
Extension duct (each extension extends the flue length by up to
767 mm)
90° Extension Elbow (Allows an additional bend in the flue
and has an ‘equivalent length’ of 767 mm.) This elbow is
mechanically different from the flanged elbow supplied as
standard with the appliance, but has the same equivalent length of
767mm.
45° Extension Elbow Allows an additional bend in the flue and
has an ‘equivalent length’ of 384mm.
Vertical Turret Socket (for use with elevated horizontal flues
and vertical cowls)
Vertical Roof Terminal. (For use where an external wall is not
available)
2.6
CONCENTRIC AIR/FLUE DUCT SPECIFICATIONS
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SPECIFICATION FOR STANDARD AND EXTENDED STRAIGHT FLUES
(Refer to section 2.6(a) for maximum allowable lengths)
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‘L’
‘S’
‘L’
‘R’
3(a)
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‘L’
‘L’
3(b)
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Fig 3a - Standard flue assembly using either
side or rear outlet.
Flue length ‘L’ (measured from the boiler outlet centre
line to the outside wall face) = max 820
‘R’ distance from boiler outlet centre to
rear of boiler = 188mm
‘S’ distance fron boiler centre to
side of boiler = 225mm
(Allow for minimum clearance of 5mm at side of boiler)
Fig 3b - Standard flue assembly with
optional straight extensions using either
side or rear outlet
Maximum flue length ‘L’ (measured from the boiler
outlet centre line to the outside wall face).
Ace = 4000mm, Ace High = 2000mm
These optional kits may be used with the standard flue kit to
produce an extensive range of flue options. Examples are illustrated
in Figure 2. Variations upon these illustrations may be used
providing that the following rules are strictly obeyed.
a) The maximum/minimum permissible allowable length of the flue
system is:
Ace
horizontal flue terminal - maximum 4000 mm (118 in)
vertical flue terminal - maximum 4618 mm (182 in)
horizontal flue terminal - minimum 300mm
vertical flue terminal - minimum 565 mm
Ace High
horizontal flue terminal - maximum 2000 mm (157 in)
vertical flue terminal - maximum 3851 mm (151 in)
horizontal flue terminal - minimum 300mm
vertical flue terminal - minimum 565 mm
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