Vacuum Relief Damper for CM2 and CA3 Boilers

Vacuum Relief Damper

The vacuum relief damper is very simple in design. When a vacuum occurs inside the vent system (as occurs with the Joukowsky effect) and the atmospheric pressure outside of the vent exceeds the tension of the spring, the spring compresses to open a flapper. As this flapper opens, air is allowed to enter the vent system which relieves the vacuum and prevents damage to the vent and to the boiler system. The relief damper is available [for our CM2 and CA3 boilers] in a range of 5 sizes to suit a variety of commercial gas boiler vent systems.


Downloads

manuals_312x176.jpg

Product manuals

Installation, operating and service instructions

View manuals
cad_312x176.jpg

CAD drawings

2D and 3D design files in DWG and ADSK format

View drawings
parts_catalog_312x176.jpg

Parts catalog

Parts lists and diagrams for the Viessmann product line

View catalog

Pro center

Tools and info for heating contractors, consulting engineers and other industry professionals

More info via Pro Login
vitospec_312x176.jpg

Vitospec

Engineering specifications and product submittals

Start webapp
online_312x176.jpg

Training Videos

Installation and service guides for contractors.

Watch videos
techinfo_312x176.jpg

Technical support

Expanded telephone support for heating contractors

More info