Preheater kit Topvex

A pre-heater is available as an accessory for Systemair Topvex units with counter flow heat exchanger. The pre-heater will compensate the lack of reheater capacity during bypass de-icing.The pre-heater is connected to the Topvex Corrigo control and will be engaged only (default*) during bypass defrosting mode, to secure supply temperature. Depending of air flow and heating coil capacity the set point for the pre-heater can be set and optimized from the Corrigo control. (Set point is determined according to lack of reheater capacity during bypass de-icing.)*(optional function settings can be selected from Corrigo menu. In example, conditioned outdoor air temperature)The kit contains of 1 expansion module, 1 pre-heater, 1 outdoor air sensor and 1 instruction.