Combustion Air Connection/Flue Connection; Combustion Air Quality; Validity Of Regulations; Transporting The Boiler - Buderus Logano plus GB402 Installation And Maintenance Instructions For Contractors

3.8

Combustion air connection/flue connection

The installation room must be equipped with the required combustion
air vents.
For open flue operation:
▶ Provide a combustion air vent in accordance with table 7.
▶ The size of the individual apertures in grilles installed (if required) in
the ventilation opening must be at least 10*10 mm. The total area of
the individual apertures must be equal to or greater than the value
specified in table 7.
Gas-fired condensing boiler
GB402-320-5
GB402-395-6
GB402-470-7
GB402-545-8
GB402-620-9
Table 7 Combustion air vents
The following applies for open-flue mode:
For ventilation purposes, the installation location must have a ventilation
opening leading to the open air of at least 150 cm
2
openings of at least 2 × 75 cm
equivalent flow cross-sections.
▶ Never position objects in front of these openings.
▶ The supply air duct and its openings must remain unobstructed at all
times.
▶ The dimensions of the supply air duct must be calculated in accord-
ance with the current regulations.
The boiler is to be operated at a flue system.
▶ Observe country-specific and local regulations.
▶ Observe attached documentation "Information on flue gas routing".
For additional information on combustion air
connection/flue connection see Chapter 6, page 16.
3.9

Combustion air quality

▶ Keep the supply of combustion air free of corrosive substances (e.g.
halogenated hydrocarbons that contain chlorine or fluorine
compounds).
This will help to prevent corrosion.
3.10

Validity of regulations

Modified regulations or supplements are also valid at the time of
installation and must be observed.
1) In addition to this, country-specific and local regulations must be observed.
Logano plus GB402 – 6 720 820 700 (2018/01)
1)
Aperture cross-section
[cm2 ]
> 690
> 850
> 990
> 1150
> 1290
2
or ventilation
or ducts leading to the open air with
1)
4

Transporting the boiler

CAUTION: Risk of injury through carrying heavy loads!
▶ Only transport the boiler by means of a crane/hoist,
forklift truck or transport rollers.
DANGER: Risk to life through falling loads!
Falling loads can result in life-threatening injuries.
▶ Only transport the boiler by means of a crane/hoist,
forklift truck or transport rollers.
▶ Only trained authorised personnel may undertake
the handling (e.g. by forklift truck) or lifting by means
of a crane/hoist.
▶ Observe safety instructions relating to the lifting of
heavy loads (e.g. by means of a crane/hoist).
▶ Wear personal safety equipment (e.g. safety boots
and protective gloves).
▶ Protect the boiler against slippage by means of a
transport strap.
NOTICE: Boiler damage through impact!
The standard delivery of the boiler includes components
that are susceptible to impact damage.
▶ During handling protect all components against
impact.
▶ Observe the transport markings on the packaging.
The boiler may be transported to the place of installation by crane/hoist,
forklift truck or pallet truck. Where possible, transport the boiler to the
installation location in its shipping packaging to protect it from
contamination.
Transporting the boiler 4
13