10 Flue Systems For Balanced Flue Operation; 10.1 General Information For Balanced Flue Operation; 10.1.1 Regulations; 10.1.2 System Certification - Buderus Logamax plus GB162 Technical Manual

10 Flue systems for balanced flue operation

10 Flue systems for balanced flue operation

10.1 General information for balanced flue operation

10.1.1 Regulations

In accordance with the [German] Technical Rules for Gas
Installations DVGW-TRGI 2008, the contracted installer
must seek the agreement of the responsible flue gas
inspector prior to commencement of work on the flue
system or notify the flue gas inspector of the installation in
writing. In this connection, observe the relevant national
and regional regulations. It is recommended to ask the
flue gas inspector to confirm his participation in writing.
Gas combustion equipment must be
connected to the flue on the same floor
where it is installed.
Important standards, ordinances, regulations and
directives concerning the sizing and implementation of
flue systems are as follows:
• EN 483
• EN 677
• DIN-EN 13384-1 and DIN-EN 13384-2
• DIN 18160-1 and DIN 18160-5
• Technical Rules for Gas Installations
DVGW-TRGI 2008 [Germany]
• Landesbauordnung (LBO) [Germany]
• Muster-Feuerungsverordnung (MuFeuVO) [Germany]
• Feuerungsverordnung (FeuVO) of the relevant Federal
State [Germany]

10.1.2 System certification

The air/flue gas lines of the Buderus sets DO, DO-S,
GA-K, ÜB-Flex with GA-K, GAF-K, GAL-K and LAS-K
have been system-certified together with the
Logamax plus GB162 for balanced flue operation.
The system certification complies with the Gas
Appliances Directive 90/396/EEC as well as the EN 483
and EN 677 standards. Joint approval of the Buderus set
with the appliance is documented by the corresponding
CE designation. The CE designation is listed in the
technical documentation of the respective Logamax plus
GB162 gas condensing boiler. No additional CE approval
of the flue system is required.
The limits of application of the Buderus sets for balanced
flue operation of the Logamax plus GB162 gas
condensing boilers have been finalised. Special
determinations for the implementation of the respective
air/flue gas line, the maximum permissible overall flue
length and the number of diversions within the flue line are
summarised on pages 138 to 159.
A calculation of the flue system to DIN-EN 13384-1 is not
required. The LAS manufacturer must only calculate the
size of an air/flue gas system in connection with the
132
Buderus set LAS-K in accordance with the system
configuration.

10.1.3 General requirements of the installation

room

Observe all building regulations and the Technical Rules
for Gas Installations applicable to installation rooms
(DVGW-TRGI 2008 [Germany]). The installation room
must be free from the risk of frost.
Combustion air must be free from excessive dust levels
and from halogenated compounds or other corrosive
substances. Otherwise there would be a risk of damage
to the burner and the heat exchanger surfaces.
Halogenated compounds are highly corrosive. These are
contained, for example, in spray cans, thinners, cleaning &
degreasing agents and in solvents.
Easily inflammable and explosive materials or
liquids must not be stored or used in the
vicinity of the gas condensing boiler.
The maximum surface temperature of the gas condensing
boiler and the flue is less than 85 °C. Therefore, minimum
clearances towards combustible building materials need
not be observed. The boiler can, for example, be installed
on a wooden wall ( DVGW-TRGI 2008, section 8.1.6).
The boiler can be installed without minimum side
clearances. All maintenance can be carried out from the
front.
Prohibited installation areas
Never install gas appliances in essential stairwells (e.g.
escape routes), rooms with essential stairwells and exits
to the outside, or essential hallways. This does not apply
to building categories 1 and 2.
Gas appliances must also never be installed in any rooms
or parts thereof that are subject to explosion protection.
The Logamax plus gas condensing boilers for balanced
flue operation may also be installed in garages. Provide
adequate protection of the gas condensing boilers
against mechanical damage, e.g. by means of a hoop or
deflector.
6 720 645 821 (2010/09) – Logamax plus GB162