WM-ERV Manual 2005.2.doc2
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3
SYSTEM COMPONENTS
3.1
General
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The Air Change Wall Mounted Energy Recovery Ventilator (WM-ERV) has been
developed for Classrooms and other applications to supply fresh air to meet
Ventilation codes. The system pre-cools or pre-heats and dehumidifies outdoor
air by transferring the energy from the return air through the heat exchanger
walls to the incoming outdoor air. The Enthalpy Heat Exchanger inbuilt in the
Ventilator has been designed to return around 75% efficiency.
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The WM-ERV is professionally assembled, internally wired through out, with easy
access for filter change. The Front grille is designed to be removed by lifting
upwards and then pulling towards you, allowing access to filters. Remember to
always turn the power off before removing the front grille.
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The WM-ERV provides 300 l/s outdoor air on low speed and 350 l/s outdoor air
on high speed.
3.2
System Components
3.2.1 Cabinet
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Prefabricated wall and ceiling panels of are constructed of 1.2mm galvanised
sheet metal, bonded to 10mm aluminium polyethylene insulation.
3.2.2 Fans
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Supply and exhaust fans are 80W centrifugal direct drive and are constructed
using forward curved vanes fabricated from galvanised steel.
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Fans are controlled by an HPM electronic speed control.
3.2.3 Heat Exchanger
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The Energy Reclaim (enthalpy) heat exchanger uses a combination of cross
flow and counter flow, with enthalpy transfer media between moulded plastic
air guiding frames for a very high efficiency and long life. The heat exchanger
has been secured under pressure by galvanised steel end plates and corner
fittings.
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There is no cross contamination between the air paths.
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The counter flow enthalpy heat exchanger incorporated into the unit will
reclaim up to 75% of the energy (under normal operating conditions) from the
return air and transfer it to the incoming outside air, i.e. to pre-treat the
outside air. This results in a saving of up to 75% on the cost of heating or
cooling the outdoor air. (Typical ERV use with normal air conditioning, see
Plan and Side View schematic).