Fresh, pre-warmed 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. 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.
Available in three speeds: 20, 58 and 83 l/s. It is ideal for light commercial applications including function rooms, offices and classrooms.
The HR300 unit requires a 380mm x 280mm hole. Units should be level and square in the wall.The unit should be fitted so that it overhangs by minimum of 50mm on the inside, and a minimum of 70mm on the outside. An extension sleeve is available for walls up to 650mm thick.
Supply and install a HR300 through the wall heat recovery unit as manufactured by:
Vent-Axia Clean Air Systems
|Max ventilation rate
|Low Supply Rate
|Low Extract Rate
|Normal Supply Rate
|Normal Extract Rate
|Boost Supply Rate
|Boost Extract Rate
|N° speed settings
Efficiency: The unit should retain up to 70% of the temperature differential of out going air.
Heat exchanger: Should be of a multi plate cross-flow type constructed out of a polymeric plastic with ultra sonic welded joints.
Motor: Should be a 240V 50Hz A/C with sleeve bearings and greased for life. It shall operate up to an ambient temperature of 40°C and be fitted with a manual reset thermal overload protective device.
Fan: The 2-N° polymeric fan impellers should be of a mixed flow type, dynamically balanced mounted on a fixed stator housing.
Controls: The unit should be operated via a remote 3 Position switch, humidistat or a humidiswitch.
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.
Filter: Should be a washable reticulated foam type coarse filter.
Construction: The unit outer case should be a rigid ABS moulding. The internal/external grille should be a cream coloured ABS moulding.
||dB(A) @ 3m|
Mains electrical supply: 230VAC 50Hz.
Complies to the following approvals/directives: LVD, EMC and CE.