21
V. 1.3-24-04-19
brookvent.co.uk
T: +44 (0) 28 9061 6505
5.1 Wiring Schematic
6.0 Controls and Settings
6.1 Fan Speed Control
The fan speeds of the unit are controlled by four potentiometers (Speed Pots) on top of
the unit; these are clearly marked “Trickle” and “Boost”. These allow individual control of
the trickle and boost rates for the supply and extract fans within the unit.
These separate speed options allow one speed to be set for normal day to day operation
(I.e. Trickle) and an increased speed to be set (I.e. Boost) that operates only when the
Grey switch wire is triggered by a 230v boost signal such as a Wall Switch or Passive
Infrared Sensor.
If the Boost for either fan is required to be set, it should always be set higher than the
Trickle. Turing these Speed Pots clockwise increases the fan speed.
3A Fuse
