636486
44
Zoom out
Zoom in
Previous page
1/116
Next page
Regulations and operating conditions
6 720 645 817 (2010/09)
44
6.4 Combustion air
Where combustion air is concerned, ensure that it is not
heavily contaminated with dust and contains no
halogenated compounds. Otherwise there would be a
risk of damage to the combustion chamber and the
secondary heating surfaces. Halogenated compounds
are highly corrosive. These can be contained in spray
cans, thinners, cleaning & degreasing agents and
solvents. Design the combustion air supply so that, for
example, no extract air is drawn in from chemical
cleaners or paint shops. Special requirements apply to
the supply of combustion air in the installation room.
The Suprapur gas condensing boiler is prepared for
balanced flue operation. Balanced flue operation is
possible via the connection set. This is also appropriate,
for example, if the combustion air could be
contaminated.
Routing flue gas in chimney shafts with secondary
ventilation
No cleaning is required if the flue gas is routed through
a chimney shaft with secondary ventilation (Æ Fig. 48 on
page 80).
Routing air and flue gas in countercurrent
Clean the chimney shaft as follows if the combustion air
supply is drawn through the shaft in a countercurrent
(Æ Fig. 52 on page 88):
If dust loads due to fragile chimney pointing are to be
expected, also clean and seal the chimney shaft.
6.5 Combustion air supply
The conditions of installation rooms and the siting of gas
appliances must comply with country-specific
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
2
(plus 2 cm
2
for every
kilowatt output above 50 kW rated output) is provided.
The required cross-section may be split over up to two
lines and must be sized to provide the equivalent air flow
rate.
General requirements
Combustion air vents and lines must never be closed
or covered if appropriate safety equipment cannot
ensure that the combustion equipment can only
operate when the flow cross-section is free.
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.
Previous use of the
chimney shaft/
chimney
Required cleaning
Ventilation shaft Thorough mechanical
cleaning
Routing flue gas from
gas combustion
Thorough mechanical
cleaning
Routing flue gas from
oil or solid fuel
Thorough mechanical
cleaning; sealing the surface
to prevent vapour from
residues (e.g. sulphur) in the
brickwork permeating the
combustion air
Tab. 24
To avoid having to seal the chimney shaft:
Choose open flue operation or draw in
combustion air via a coaxial pipe inside the
chimney shaft or a separate pipe from
outside.
44


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Junkers MKB 400-3 A at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Junkers MKB 400-3 A in the language / languages: English as an attachment in your email.

The manual is 15,83 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info