Flue System - Worcester GREENSTAR II HE OIL 12/22 Installation And Servicing Instructions

7. Flue System

A flue system provided by Worcester Bosch, must be fitted in
accordance with BS5410:Part 1 and the Building Regulations.
The appliance is supplied ready for installation to a balanced
flue system by the simple addition of one of the flue terminal kit
options shown in Figs. 4 to 13.
Details of the installation procedure are included in the Flue
Terminal Instructions supplied with the terminal kit.
7.1 Siting the flue terminal
1. The flue terminal must be located in a suitable position, as
shown in Fig.14, such that the products of combustion can be
freely dispersed without the possibility of the gases entering the
dwelling or that of a neighbouring dwelling.
2. Discharge of flue gases into car ports or narrow passageways
is not recommended.
3. The terminal must not cause an obstruction nor the discharge
cause a nuisance as a result of either flue gases or terminal
noise.
4. If a terminal is fitted less than 2 metres above a surface to which
people have access, a suitable terminal guard must be fitted.
A suitable guard is available from Worcester Heat Systems, Part
Number 7 716 190 009, or alternatively a proprietary terminal
guard may be used provided it leaves 75mm clearance all
around the terminal.
The guard should have suitable corrosion resistance due to the
acidic content of the flue gases.
5. The terminal guard must be evenly spaced about the flue
terminal and secured using screws so that the terminal guard
can be removed for maintenance to the flue terminal..
6. In certain weather conditions. The terminal may steam and
siting where this could cause a nuisance should be avoided.
7. Take care to ensure that combustion products do not enter
ventilated roof voids.
Fig. 4. Standard Horizontal Flue
125mm
125mm
(5")
(5")
1000mm
1000mm
(39")
(39")
Fig. 5. Extended Horizontal Flue
Fig. 6. Horizontal Flue with one 90° Bend
Fig. 7. Horizontal Flue with two 90° Bends
Total straight length 1+2
Total straight length 1+2
must not exceed 3000mm
must not exceed 3000mm
7
1000 - 5000mm
1000 - 5000mm
(39.09") - (195.45")
(39.09" - 195.45")
500 - 4000mm
500 - 4000mm
(19.7" - 157.5")
(19.7") - (157.5")
2
1
180mm
125mm
125mm
(5")
(5")
125mm
125mm
(5")
(5")
125mm
125mm
(5")
(5")