Table of Contents
Advertisement
SYSTEM DESIGN AND PLANNING INFOrMATION
4.0
b)
Flue Options
The concentric flue system options and kits available for the this boiler are listed
below in table 4.. The flue installation procedures, location of flue terminals,
additional flue kits options etc are described in detail in the 'High Efficiency
Condensing Combination Boiler Flue Design and Installation Manual' which is
also supplied with the boiler.
The concentric flue system can be extended to a maximum equivalent length of
4.9 meters (excluding the flue terminal and spigot elbow on the appliance) after
the flue elbow fitted to the appliance. This can be horizontal or vertical but the
allowances listed in table 4.3 must be made for each component fitted.
Table 4.2 concentric Flue Kit Options
Description
Standard Horizontal Flue Kit
Vertical Flue Terminal Kit - Pitched
Flat Roof Flue Kit
Ridge Terminal Flue Kit
c)
Terminal Position
The minimum acceptable siting dimensions for the terminal for obstructions, other
terminals and ventilation openings are shown in figure 4.13 ( See also 'Gledhill
Combi Boiler Flue Manual'). The dimensions are measured from the edge of the
terminal.
The terminal MUST be located so that it is exposed to external air, allowing
unobstructed flow of air across it at all times.
This is a high efficiency condensing boiler and therefore some pluming will
occur from the flue outlet. This should be taken in to consideration when
selecting the position for the terminal.
Carports or similar extensions of roof only, or roof and one wall, require special
consideration with respect to any openings e.g. doors, vents or windows under
the roof. Care is required to protect the roof if it is made of plastic sheeting. If
the carport has a roof and two walls, then seek advice from the local gas supply
company before installing a boiler.
d)
Terminal Guard
A terminal guard is required if a person could come into contact with the terminal
or the terminal could be subject to damage. The terminal guard is required for
horizontal flue terminals below m above the ground floor or accessible by the
general public from windows, balconies etc.
If a terminal guard is required, it must be positioned to provide minimum of 50mm
clearance from any part of the terminal and be central over the terminal.
A terminal guard for this boiler is shown in figure 4.14 and is available from Gledhill
Water Storage Ltd quoting part number GF199.
Table 4.3 Equivalent Length of Extra Flue components
Part Number
GT461
m Flue Extension
AFB001
1m Flue Extension
AFB010
0.5m Flue Extension
AFB00
Description
Equivalent Length (m)
45
o
Flue Bend
90
o
Flue Bend
Page 3
.0
1.0
0.5
1.5
1.9
Advertisement
Table of Contents
