Using the Vent-Axia LoWatt range can reduce electrical consumption, thus reducing the overall carbon footprint.

When using heat recovery ventilation, the heating system requirement is reduced thus potentially saving another 500kg of carbon per annum.

Overview
A wholehouse heat recovery system with 95% energy efficiency. An easily accessible heat recovery cube protected by two removable EU3 filters. Two constant velocity LoWatt Energy Saving DC fans ensure long life (typically over double the life of AC motors) and lowest possible energy use. Fully insulated construction with built in condensation drain. Fitted with 150mm spigots. Specifically designed for new build homes with a high level of insulation.

The HRE350 is factory set to 3 speeds - 100, 170 and 300m³/h. On the front of the unit is a digital controller that can be used to set the speeds to any required performance. Offering ‘Close Control’ to prevent over ventilating.

In addition the operating temperature settings can be pre-programmed for automatic operation of the summer bypass.
This applies to the HRE350B model only.

Installation

The HRE350 must be mounted vertically in a roof space or suitable enclosed cupboard when mounted in a unheated area. Ducting should be insulated.

Performance

Dimensions (mm)

Weight: 31kg

Controller

The HRE350 comes complete with a 3 position switch offering 3 speeds - day, night and boost. Incorporated on the controller is a neon indicator that comes on when either the filter is blocked or every 3 months as an indicator to check the filters.

Typical Specification
Supply and install a HRE350/HRE350B system Wholehouse heat recovery unit as manufactured by:

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

Performance:	m³/h	l/s
Max ventilation rate	300	83
N° speed settings	3

Efficiency: The unit should retain up to 95% of the temperature differential of out going air.

Heat exchanger: should be of a multi plate counter-flow type constructed out of PETG with ultra sonic welded joints.

Motor: should be a Lowatt Energy Saving DC with ball bearings, greased for life. It shall operate up to an ambient temperature of 40°C and be fitted with an electronic thermal overload protective device.

Fan: The fan impeller should be of a forward curved centrifugal type, dynamically balanced.

Controls: The unit should contain an integral driver circuit that provides the unit with a constant airflow volume feature. With provision to connect a remote manual 3 speeds.

Ducting spigots: The unit should provide 150mm ø x 45mm long spigots for all duct connections. The inlet and outlet configuration is fixed. (Can be converted to flat ducting).

Filter: should be synthetic material tested to minimum of EU3.

Condensation: The outlet provided should be located centrally at the bottom of the unit.

Construction: The unit outer case should be constructed of white powder coated sheet metal. The heat exchanger access door should be blue powder coated sheet metal and it should be possible to hand the door opening.

Mounting: Vertical only

Sound Levels:	dB(A) @ 1m
Speed 1	33.9
Speed 2	41.4
Speed 3	48.8

Mains electrical supply: 230VAC 50Hz.

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