HR300 RW6



The HR300RW6 is a semi-remote unit designed for mounting in an external wall.Two 150mm diameter spigots are provided for ducting connection to internal supply and extract grilles. The unit provides balanced supply and extraction with up to 70% heat recovery. Controlling internal relative humidity, the HR300RW6 unit controls condensation and eliminates mould.

Fresh pre-warmed air from outside is continually provided to the room with simultaneous extraction of stale air and smells. Heat is transferred via a unique plastic heat exchanger from outgoing air to the fresh air supply with zero cross contamination, maintaining internal temperatures and providing a fresh environment.

Available in three speeds: 75, 210 and 280m³/h. It is ideal for offices, changing rooms and examination rooms, etc.



HR300RW6 Typical Installation

The HR300RW6 is designed for installation in an external wall providing (150mm) diameter spigots on the inner plate for ducted extraction and fresh air supply. The unit requires a 280mm wide and 380mm high hole and is mounted through the wall in a vertical position.The HR300RW6 requires a minimum overhang of 70mm on the outside and 50mm inside. Units should be level to assist in-built condensate drainage.



Extract Performance

Supply Performance

Trickle Medium Boost Trickle Medium Boost
75 210 280 70 190 270


Weight: 11kg

Power Consumption
Maximum 108.0W



Typical Specifications

Supply and install a HR300RW6 through the wall heat recovery unit as manufactured by:

Vent-Axia Clean Air Systems
Fleming Way
West Sussex
RH10 9YX


m³/h l/s
Max ventilation rate 280.0 77.77
Low Supply Rate 70.0 19.44
Low Extract Rate 75.0 20.83
Normal Supply Rate 190.0 52.78
Normal Extract Rate 210.0 58.34
Boost Supply Rate 270.0 75.0
Boost Extract Rate 280.0 77.77
N° speed settings 3

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 dedicated remote 3-speed controller with sensor option to allow for humidistat or PIR input.

Ducting spigots: the unit should have 2-N° 150mm Ø x 50mm spigots. One each for the supply and extract airflows.

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

Construction: The unit outer case should be a rigid ABS moulding.The external grille should be a cream coloured ABS moulding. The internal spigot plate should be back vacuum formed PVC.

Sound Levels: dB(A) @ 3m
Trickle: 37.0
Medium: 40.0
Boost: 44.0

Mains electrical supply: 230VAC 50Hz.

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

Related Documents

There are no softwares available for download for this particular product.