HTM - LTHW Override Controller

The HTM wall controller is designed to be mounted within a zone containing up to two HTM units. Via the wall controller, the user has the ability to control the fan speed / turn off the fan, as well as the ability to adjust the heating setpoint of the occupied space by +/- 2°C.

The wall mounted controller houses two sensors which monitor the room’s temperature and CO2 level.  If the CO2 level rises above 900 ppm, the system will operate in natural ventilation mode by opening both the external and recirculation damper allowing fresh air into the space. If more fresh air is required in summer, the unit will automatically open the VENSTAIR louvre. If the external temperature falls below 15°C, the unit will operate in mixed mode; mixing external air with room air before bringing it into the room to prevent cold draughts.
If the CO2 level rises above 1100 ppm, the HTM will operate in boost mode; bringing in fresh air into the room and reducing the CO2 level.
The user has the ability to adjust the heating set point of the occupied space by +/- 2°C.

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