Greenwood CMEV.4eHT Low Energy + Humidity & Timer Constant Running Central Ventilation Unit elica spv vent cat 51 With all of these functions With all of these functions available the OF100GIP can be easily set up for any installation or control option and adjusted to suit the the requirements of an individual and the room the videos below explain how to commission the fan in either intermittent or continuous mode Zehnder P N 400 100 085 medium and high speeds via a remote wired 3 position switch (GS1) or low and high only via a double pole switch (GS2) logs the amount of time the room has been in use and automatically adjusts the run on time accordingly up to a maximum of 15 minutes