Forced combustion air is supplied to studio equipment either individually by dedicated variable speed blowers or as a group fed by a single fixed speed blower via manifold.

Variable Speed Blowers
Most combustion equipment from WDG is supplied with a variable speed blower which receives an input speed signal from the temperature controller. The blower speeds up when there is a call for heat, and slows down when the set point is lower than the process temperature. Compared with fixed speed blowers, dedicated variable speed blowers save energy as units can be slowed or turned off on an individual basis.

Model Voltage Energy Consumption Volume (CFM) Max Pressure (“w.c.)
VSB-250 120VAC 2.5kW 130  26
VB007 230/460VAC 1.1kW 107  55.5
VB019 230/460VAC 2.6kW 160  78

Ametek Performance Curve

VB007 Performance Curve

VB019 Performance Curve