Parmco In-bench 600mm, Installation And Operating Instructions Manual

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5
Return Air Flow

The Parmco Downdraft is designed to remove large amounts of air from the kitchen. For it to
operate efficiently, air must be allowed to enter the kitchen area from the outside.

In some situations, additional ducting may have to be installed to allow the flow of this Return
Air back into the kitchen.
Special Requirements

The exhaust air must not be discharged into an operating smoke or exhaust flue, or into a shaft
used for ventilating rooms in which fireplaces are located. The air must not be discharged into a
flue that is used for exhausting fumes from appliances burning gas or other fuels (not applicable
to appliances that only discharge the air back into the room).

The requirements of the authorities concerned have to be observed for discharging air through
smoke or exhaust flues not in use.

When the Downdraft is operated at the same time as chimney dependent fire installations are
used (eg. gas, oil or coal fired heating systems, continuous heaters or hot water boilers)
provision must be made for an adequate supply of air which the fire installations require for
combustion.

Harmless operation is possible if the under pressure in the room where the fireplace is
installed does not exceed 4Pa (0.04 mbar).

This can be achieved if the combustion air can flow through non closable openings such
as in doors, windows, intake/exhaust wall boxes.
NOTE: In assessing this possibility, the entire combined ventilation of the home must be taken
into consideration. This rule does not apply for operation of cooking appliances such as cooking
tops and gas cookers.
The pertinent regulations or guidelines of the country must be observed.