The HR300 unit incorporates 2 specially developed mixed flow fans for low noise and efficiency, with up

to 70% heat recovery. Effectively lowering internal relative humidity the HR300 unit controls

condensation and eliminates mould growth. Designed for through the wall mounting. Fresh, prewarmed

air from outside is continually provided to the room with simultaneous extraction of stale moist

air and smells. Heat is transferred via a unique plastic heat exchanger from outgoing air to the fresh air

supply with no cross contamination, maintaining internal temperatures and providing a fresh

environment. The unit is fully controllable for speed using a small dedicated speed controller.

n Automatic ON/OFF control or switching to boost is easily achieved using sensors/timers e.g.

humidistat. For summer operation the heatexchanger can be removed and replaced with a plastic

divider board to provide positive cooling to rooms.

n Available in three speeds: 75, 210 and 300m3/h. It is ideal for light commercial applications including

function rooms, offices and classrooms.

n Efficiency: The unit should retain up to 70% of the temperature differential of out going air.

n Heat exchanger: Should be of a multi plate cross-flow type constructed out of a polymeric plastic with

ultra sonic welded joints.

n Motor: Should be a 240V 50Hz AC with sleeve bearings and greased for life. It shall operate up to an

ambient temperature of 40oC and be fitted with a manual reset thermal overload protective device.

n Fan: The 2-¡° polymeric fan impellers should be of a mixed flow type, dynamically balanced mounted

on a fixed stator housing.

n Controls: The unit should be operated via a remote 3 Position switch, humidistat or a humidiswitch.

n Back Draught Shutter: The unit should have the option back draught shutter operated via a thermal

actuator set to close when unit is powered down.

n Filter: Should be a washable reticulated foam type coarse filter.

n Construction: The unit outer case should be a rigid ABS moulding.

n The internal/external grille should be a cream coloured ABS moulding.

n Complies to the following approvals/directives: LVD, EMC and CE.