Buderus GB402-320-5, Инструкции по установке и обслуживанию для подрядчиков

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6 Fitting
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6 Fitting
6.1 Establishing the flue gas connection
Observe all country-specific requirements when installing the flue
system.
Very different requirements apply to flue gas connection in different
countries.
▶ Plug boiler flue connection [2] into flue connection [1].
▶ Fit condensate hose [3] to the condensate drain of the boiler flue
connector.
▶ Guide the condensate hose through the opening in the lower back
panel.
Fig. 9 Fitting the flue connection
[1] Flue gas connection
[2] Boiler flue connection with condensate drain
[3] Condensate hose
▶ Make flue connection.
The flue system is to be carried out in accordance with either pressure
classification (EN 1443) H1 or pressure classification (EN 1443) P1
with additional mechanical impact stability up to 5000 Pa.
When installing the flue connection, observe the following:
• Observe the installation instructions of the flue accessories.
• Country-specific regulations
• The flue pipe cross-section must comply with all current regulations
• Select the shortest possible route for the flue pipe and install it with
a slope towards the boiler.
• Secure the flue at appropriate intervals
• Ensure the connection is made free from stress, and that no loads are
transferred to the flue connection.
• During engineering and installation of the flue system, create a
layout that best favours the flue gas flow
Flue gas routing on multi-boiler systems (cascade).
These instructions only concern single boiler systems.
Only ask qualified contractors to calculate and size flue
gas / combustion air systems for multi-boiler systems.
Ask the manufacturer of the flue system to confirm and
verify the calculations. The flue gas system must prevent
a return flow of flue gas through boilers that are not in
use.
DANGER: Risk to life from escaping flue gas inside the
installation room!
▶ The gasket in the flue connection of the condensate
pan must be present, in good order and correctly
inserted.
NOTICE: System damage through incorrectly drained
condensate.
▶ Drain the condensate generated in the flue via the
boiler flue connection directly into the siphon inside
the boiler (

Chapter 6.2, page 17). Boiler flue
connection, condensate drain and condensate hose
are part of the standard delivery.
▶ Use the boiler flue connection that is part of the
standard delivery.
Centrocerin (scope of delivery) must be used as a
lubricating paste for installing the boiler connector into
the female connection of the condensation catch pan.
Class Leakage rate Rated pressure Mode of operation
I*s
-1
*m
-2
[Pa]
P1 0.006 200 Positive pressure/
negative pressure
1)2)
1) Positive pressure up to maximum 200 Pa
2) Usage only with additional mechanical impact stability up to 5000 Pa in the
connection piece
H1 0.006 5000 Positive pressure/
negative pressure
3)
3) Positive pressure up to maximum 5000 Pa
Table 9 Pressure classifications of the flue system
The wind protectors for the combustion air supply and
the flue gas routing must not be installed on opposite
walls of the building.
The boiler must not be connected to any combined flue
system with motorised combustion systems (e.g.
combined heat and power unit).