Hot Air Plenum - CADDY PF01015 Installation And Operating Instructions Manual

informed that the ventilation system may have to be rebalanced by a ventilation technician after the installation of
the solid fuel unit.
NOTE:
It is recommended to install an outside air inlet with a diameter of at least 4" in the room where the heating appliance is
installed (see drawing below). It is preferable to choose a wall which is not exposed to dominant winds, depending on
the conditions surrounding your house.
N.B. The owner of the furnace is responsible for the room's air quality in case of negative pressure or
temporary negative pressure.
If there is a fan in the wood storage room, make sure it does not create a depression in the room where the furnace is
installed.
For more information regarding the installation of fresh air intake adapter, refer to the option's manual.

14.12. HOT AIR PLENUM

The hot air plenum coming out of the furnace is to have a minimum height of 24" (610 mm) if the top of the first vertical
section is not flush with the first horizontal section. Otherwise, the minimum height is 18" (457mm). These dimensions
for all hot air furnaces are in accordance with the standards CSA B140.4, UL 391 and UL 727.
TO ENSURE ADEQUATE STATIC PRESSURE, THE SYSTEM SHOULD BE BUILT IN A WAY THAT THE VOLUME
OF COLD AIR RETURN IS AT LEAST EQUAL OR SLIGHTLY HIGHER THAN THE VOLUME OF THE HOT AIR
DISTRIBUTION.
Free air entry
Exterior wall
Insulated pipe (full length)
Fresh air
intake
18"
457mm
MIN.
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