ERV 120 TC and ERV 150 TC with adjustable overrun time are not speed controllable.
The ERV fan can be used in continuous operation. Connecting 2 fans, one after another, results in twice the level of pressure.
ERV 150 and ERV 150 TC must not be controlled with a timer, time switch or similar to avoid unintentional restarting.
ERV 150 and ERV 150 TC with thermal overload protection,notself-resetting. In the event of overload/overheating/blockage, the fan switches off automatically. Once the fault has been rectified and the unit has cooled down, switch off the mains fuse and switch it back on again. Only then can the fan be started again.