11
Sales/Spares & Replacement Help Line 01604 762881
9.6
TYPE OF FLUE SYSTEMS
Two types of flue systems are available for the C26D.
i)
The standard concentric flue system 60/100mm (100mm diameter)
ii)
A Flexible flue kit (FFK) 60/100mm (100mm diameter). For further information contact
the sales office at Johnson & Starley Ltd. Telephone 01604 762881
9.7
FLUE TERMINAL POSITIONS
9.7.1
The following information provides the general requirements for siting flue terminals. As part of
the recommendation given in BS 1550 Part 1. For Ireland recommendations, see the current
issue of IS 813 “Domestic Gas Installations”, “Guide for Gas Installations in Timber Framed
Housing DM2” or consult your local gas region. They MUST be consulted when installing the
appliance into a timber-framed building.
NOTE:
Due to the nature of the warm air heater, water vapour will discharge from the flue. This should
be taken into account when siting the flue.
9.7.2
Both the extended horizontal and vertical terminals must be positioned on the outside of the
building and the free passage of air must be available at all times. It is not recommended to
position the terminal close to projections especially under a balcony or near to a drainpipe.
See Figure 5.
9.7.3
Ensure that combustion products cannot enter the building where the heater is installed or
near to any other building where doors or windows may be open.
9.7.4
Recommended terminal positions for both extended horizontal and vertical flues are shown
and flue components and installation options are also detailed.
9.7.5
The flue MUST NOT be installed under a car port.
9.8
PLUME TERMINAL OUTLETS
9.8.1
A flue duct outlet of an appliance should be at least 600 mm from the boundary line when
facing it and at least 300 mm from the boundary line when running parallel to it. See Figure 6.
NOTE:
When the flow of products is at an angle to the boundary, the 600 mm dimension may be
measured in the direction of the flow, as long as the terminal is not less than 300 mm from
the boundary.
9.8.2
It is recommended the terminals are not sited within 2 m of an opening in an adjacent building
or within 2 m of the boundary facing the terminal if the plume is likely to cause a nuisance to a
neighbour, e.g discharging over a walkway or patio.
9.9
FLUE REQUIREMENTS & GENERAL INFORMATION
9.9.1
Extended horizontal and vertical concentric flues (60/100 mm diameter) with balanced terminals
may be installed on the WarmCair C26D warm air heater.
9.9.2
If an extended horizontal flue is being used it must have a continuous fall back towards the appliance
of 3° (52 mm) per meter. This ensures that condensate runs back into the appliance from the flue
system for safe discharge via the condensate waste pipe. Reference should be made to Table 4 for
relevant part numbers.
9.9.3 The maximum length of flue permissible is
10m including terminal
9.9.4 The minimum vertical flue length is 1.25m
from the top of the appliance case to the top
of the terminal.
9.9.5
Longer flues may be fitted, however the input
of the appliance will be reduced accordingly.
9.9.6
Elbows may be fitted within the flue system
with a corresponding reduction in overall
flue.
9.9.7
Guidelines for the maximum flue length are
as follows.
FIGURE 6. PLUME TERMINAL OUTLET DIMENSIONS
HORIZONTAL FLUE
VERTICAL FLUE
UNIT
TURRET
90° ELBOW
STRAIGHT
1 m FLUE
90° ELBOW
STRAIGHT
1 m FLUE
1
-
12
-
12
1
1
8
1
8
1
2
6
2
6
1
3
4
3
4
When using 45° elbows: 2 x 45° elbow = 1 x 90° elbow
TABLE 3
Summary of Contents for WARMCAIR C26D
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