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Version10- March 2017
Eco Pacific Pty Ltd
3.3 FILTER BOX INSTALLATION
A Filter Box as a standard pre-filter is to be installed with every ventilator and has to be
located outside to take fresh air. This Filter Box should be positioned at least one meter,
but not more than 7 meters, away from the exhaust outlet of the HRV for smooth fresh air
inflow. The Filter Box is fitted with a G4 polyester filter cassette that can be cleaned by
removing the grille cover then the filter. Another filter box with HEPA type filter down stream
can also be added for further fine cleaning as required. This may compromise the air flow.
The standard filter is washable and can be vacuumed to keep it clean and clear of any dust
and debris.
Optional filters
to meet specific requirement can be sourced from any filter supplier.
Note
: Exhaust air outlet has to be away from the fresh air intake to avoid air mixing and
should be wire-meshed for protection from birds and insects. The indoor air inlet should
also be fitted with a wire mesh filter inside the grille to protect the heat exchanger from dirt
scaling and insects and should be cleaned monthly.
3.4 SERVICE CLEARANCES
It is recommended that a clearance of 600 mm be provided at each end of the HRV where
the duct collars are fitted, and 750 mm at one side for easy service of the HRV.
The ducting must not intrude on these clearances for servicing.
Illustration-6: wall installation of HRV with Filter Box below
3.5 IN ROOF AND ON ROOF INSTALLATION
The HRV's can be installed alone or can be added to the existing air handling units or
ducted heaters or coolers, as a fresh air supplement at the design and sizing stage or as a
retrofit. A qualified air-conditioning installation contractor or mechanic should be consulted
on sizing the model and ducting. The HRV should be connected downstream to the existing
ducted heating cooling appliance. The ducting should be connected with return to return
and supply to supply of both- the HRV and the heating /cooling appliance. The installer has
to make sure the ducts are harnessed tight onto the collars using duct tapes.
