System Design Considerations - Viessmann VITOCROSSAL 200 Technical Data Manual

Vitocrossal 200, CM2-400, -500 and -620 Technical Data

System Design Considerations

Boiler water return temperature
Note: The 'amount of condensate" and the "flue gas
temperature gross" graphs are independent of each
other.
Condensate and its disposal
During the operation of the boiler, the amount of
condensate to be expected can be read from the above
diagram.
The values given are approximate amounts occurring
under practical conditions. Not included in the diagram
is the amount of condensate occurring in the vent pipe
and chimney system. The condensate from the chimney
system can be collected together with the condensate
from the heating boiler and be disposed of into a floor
drain. The condensate will be between 3 and 4 on the pH
scale. If local building requirements demand neutralizing
the condensate before disposal, contact Viessmann
Manufacturing Company Inc. for a correctly sized
neutralization tank. The treated condensate will show
pH values of between 6.5 and 9 and can then be
disposed of into the waste water system.
Design notes regarding draining condensate
The condensate drain to the sewer connection must be
able to be inspected.
Route it with a gradient and equip the pipe with a P-trap;
also provide suitable facilities for taking samples.
The bottom drain should be located below the anti-flooding
level of the flue gas collector box.
Condensate drains must only be made from corrosion
resistant materials (e.g. fibre reinforced hoses). Never use
any galvanized materials or those containing copper or
black iron for pipes, connectors, etc.
Install a P-trap in the condensate drain to prevent flue
gases from escaping.
Ensure that the domestic drainage systems are made
from materials which are resistant to acidic condensate
such as:
Stoneware pipes
Hard PVC pipes
PVC pipes
PE-HD pipes
PP(s) pipes
ABS/ASA pipes
Stainless steel pipes
Borosilicate pipes
Burner adjustment
Martix cylinder burner tested at operating temperature
and adjusted in the factory.
Venting options
PP(s) (Polypropylene) flue gas/fresh air system for room
air independent operation (sealed combustion), and PP(s)
flue gas for room air dependent operation are tested
to ANSI Z21.13 - CSA 4.9 - 2000 standards and are
certified together with the Vitocrossal 200 boiler as a
constructional unit.
The Vitocrossal 200 boiler may also be vented using an
special stainless steel, single-wall, (UL listed for category IV).
The boiler may be vented horizontally through the side
wall or vertically through the roof.
For a more detailed description of the direct vent and
single-wall vent system, please refer to the Vitocrossal
200 Installation Instructions venting section.
Use ULC S-636 / UL 1738 certified for category IV
boilers. The following vent system suppliers may be
contacted for assistance in designing the appropriate
PP(s) venting system for Vitocrossal 200 CM2 boilers.
M&G / Duravent
Tel. 800-835-4429
Tel. 518-649-9700
Fax: 518-463-5271
Email: sales@duravent.com
Web: www.duravent.com
Centrotherm InnoFlue
Eco Systems. L.L.C.
Tel. (877) 434-3432
Fax. (518) 618-3166
Email: info@centrotherm.us.com
Web: www.centrotherm.us.com
Specifications
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