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Bypass Damper

Application

The exodraft Bypass Damper is used in exhaust systems to control the hot flue gases/process
air to the Basic Plate heat recovery devices.
A Bypass Damper is used primarily for larger boiler systems, industrial processing plants, or
commercial systems.
All parts in contact with flue gas are made from stainless steel EN 1.4404. All exterior parts are
made from stainless steel EN 1.4301.
An integrated electric motor opens and closes the damper.
Power supply and start/stop signal come from an external exodraft panel, and is not a part
of the Bypass Damper.
The Bypass Damper has a safety spring return, causing it to close automatically in case of a
power failure.
CHRP-web

 

Limitations

  • Max. temperature 600°C.
  • The Bypass Damper is not to be used as a draining point in an exhaust system.
  • As a rule, the Bypass Damper is only for indoor installation.
  • Installation outside requires extra shielding.
  • Flue gas / process air must be of a quality (particle free) that will not, over time, cause the
    damper to be filled with residue that can affect the function of the damper.
TypeBD250BD350BD400BD500
Bypass-Motor Type

NFA 10Nm

GK24A-1 40Nm
GK24A-1 40NmGK24A-1 40Nm
Power Connection

AC24…240V, 50/60Hz/ DC24…125V

AC/DC 24V

AC/DC 24V

AC/DC 24V
Power consumption (in standby mode)

6 (2,5) W

11 (3) W
11 (3) W11 (3) W
Weight

30 kg

72 kg70 kg68 kg
Input (spigot end)

250,5 mm

350,5 mm
400,5 mm500,5 mm
Outlet (connector)

251,2 mm

351,2 mm
401,2 mm501,2 mm
BD250
Suitable for exhaust temperature up to 600 ° C. Input (tip end) 250.5 mm; Output (Muffle) 251.2 mm.
BD350
Suitable for exhaust temperature up to 600 ° C. Input (tip end) 350.5 mm; Outlet (Muffle) 351.2 mm.
BD400
Suitable for exhaust temperature up to 600 ° C. Input (tip end) 400.5 mm; Outlet (Muffle) 401.2 mm.
BD500
Suitable for exhaust temperature up to 600 ° C. Input (tip end) 500.5 mm; Output (Muffle) 501.2 mm.

Accessories

Auxiliary contact for bypass motors