Systemair EPH, TR800 El. Pre-heat 4.5kW

Pre-heater Topvex TR The pre-heater is an option and can be ordered as an accessory, to be pre-installed inside the TR unit. For proper operation, the correct indoor conditions must also be met. The common ambient indoor temperature for the winter season is 72F (22°C) with 30-40% RH. Operating outside of that range may result in condensation of the casing and a considerable reduction in airflow.