Installation Room Conditions; Combustion Air Supply; Siting Combustion Equipment - Buderus Logano GE315 Technical Manual

8 Installation
8.2

Installation room conditions

8.2.1

Combustion air supply

Installation rooms and gas boiler installations should meet
the conditions specified by the relevant national, regional
or local regulations and must comply with the relevant Fire
Regulations.
For open flue combustion equipment with a total rated
output in excess of 50 kW, the combustion air supply is
deemed to be ensured if an aperture to the outside with a
clear opening of at least 150 cm
kilowatt output above 50 kW rated output) is provided.
The required cross-section may be split over a maximum
of two lines and must be sized to provide the equivalent
air flow rate.
General requirements
• Combustion air apertures and lines must never be
closed or covered unless there is special safety
equipment that ensures the combustion equipment can
only be operated if the flow cross-section is
unobstructed.
• The required cross-section must not be restricted by a
closure or grille.
• An adequate supply of combustion air can also be
verified by other means.
• Special requirements must be followed for LPG
combustion equipment.
58
2 2
(plus 2 cm for every
6 720 646 864 (12/2010) – Technical guide Logano GE315, GE515 and GE615
8.2.2

Siting combustion equipment

Gas combustion equipment with a total rated output in
excess of 50 kW may only be installed in rooms:
• that are not used for any other purpose
• that have no opening towards other rooms, except
doors
• the doors of which are tight and self-closing
• that can be ventilated
Burners and fuel supply devices to the combustion
equipment must be able to be shut down at any time by a
switch (emergency stop switch) located outside the
installation room. A sign reading "EMERGENCY STOP
SWITCH-COMBUSTION" must be placed next to the
emergency stop switch.
Notwithstanding these rules, combustion equipment
may also be installed in other rooms, if:
• the use of these rooms makes this necessary and the
combustion equipment can be operated safely
• the rooms are in freestanding buildings that only serve
to operate the combustion equipment and store the
fuel
Open flue combustion equipment must not be installed:
• in stairwells, except in residential buildings with no
more than two apartments
• in generally accessible hallways that serve as escape
routes
• in garages
Rooms with systems that extract air
Open flue combustion equipment may only be installed in
rooms equipped with systems that extract air subject to
the following conditions:
• simultaneous operation of the combustion equipment
and the air extractor systems will be prevented by
safety equipment
• the flue gas routing will be monitored by appropriate
safety equipment
• flue gas will be routed via the air extractor systems or it
will be ensured that such systems cannot create
dangerous negative pressure
Gas shut-off device
Gas combustion equipment in rooms or the fuel line
directly upstream of such equipment must be fitted with a
thermally activated gas shut-off device.