The ERSR heat recovery units for indoor and outdoor installation are designed for commercial applications and are able to combine maximum environmental comfort with definite energy saving. With modern systems, there is always the need to create forced ventilation, which, however, also involves expelling air-conditioned air, which thus leads to higher energy consumption. But ERSR units are equipped with a rotary heat recovery unit (upon request, also hygroscopic rotary) that enables you to save more than 80% of the energy that would otherwise be lost with the expelled stale air. These units can be integrated with fan coils and chillers, and can operate both in winter and summer.
ERSR is a heat recovery unit containing a rotary exchanger (that can be supplied in a hygroscopic material), offering high efficiency and low pressure drops. The unit is fitted with plug fans with reversed blades (on both suction and delivery) (that respect ERP2015) and a directly coupled motor, controlled by an EC device for the smaller sizes and an inverter for the larger ones. It has F7 filters on both delivery and return, and a differential pressure switch for checking the filters are not clogged. In the intermediate seasons, the outdoor temperature may be more pleasant than the indoor one, so ERSR models have a “free-cooling” function (i.e. the use of fresh outdoor air to cool the rooms, at zero cost because the recovery unit is deactivated).