See
Flue sizes shown for the Concentric Vertical Flue are adapted
sizes for flues supplied by Potterton Commercial. For flues sup
plied by other manufactors, please refer to technical data for
standard spigot sizes.
See
BS 5440 states a suitable guard should be provided whenever the
appliance terminal is fitted less than 2 m above ground, above a
balcony or flat roof.
6.3.3 General information about the exhaust gas piping system
Standards and regulations
Besides the general technical rules, the following should be particularly
observed:
Regulations of the accompanying certificate of approval
Planning laws and building regulation.
Contaminated chimneys
Combustion of solid and liquid fuels generates deposits and pollution in
the respective flue gas tract. Soot contaminated with sulphur and halogen
ated hydrocarbons sticks to the inside walls. Such flue gas tracts are not
suitable for the combustion air supply of heat generators without pretreat
ment. Contaminated combustion air is one of the main causes of corrosion
damage and malfunctions on fuel-burning installations. If the combustion
air has to be drawn via an existing chimney, this flue gas tract should be
inspected by the district chimney sweep officer responsible and cleaned if
necessary. Should structural deficiencies (e.g. old, broken chimney struc
tures) oppose its use as a combustion air supply duct, suitable measures
such as shake-out of the fireplace should be taken. It must be ensured
that there is no contamination of the combustion air with foreign matter.
If an appropriate clean up of the existing flue gas tract is not possible, the
heat generator can be operated on a concentric flue gas pipe independent
of ventilation. The concentric flue gas pipe must run straight in the shaft.
Lightning protection
Danger of electric shock
Danger to life due to lightning strike.
The chimney head cover must be integrated in any existing light
ning protection system and house-side potential equalisation.
This work should be carried out by an approved company special
izing in lightning protection and electrical work.
Shaft requirements
Inside buildings, exhaust gas system should be laid in suitable ventilated
shafts. The shafts must be made of non-combustible, dimensionally stable
materials.
Fire resistance duration of the shaft: 90 min.
Fire resistance duration of the shaft in case of buildings of lower building
height: 30 min.
6.3.4 Mounting the flue gas system
Warning
Danger of injury by not wearing working gloves.
Wearing working gloves is recommended during assembly work,
particularly while cutting the pipes.
Mounting with gradient
The flue pipe must be routed at a gradient to the Paramount four so that
the condensation from the flue pipe can drain from the flue pipe to the cen
tral condensation collector of the Paramount four.
6 Installation
38
Paramount four 30 – 115 kW
7658013 - 02 - 15092016