Product Manual

HeatMax II Furnace Installation and Operation Manual
19
5.1.2 Adjustable height of the plenum; (with the plenum extension cut off (A)).
When the ceiling height, measured from
the floor is greater than 72" (183 cm), but
less than 84" (213 cm), it will be possible
to cut the plenum extension (A) of at most
8" (203 mm). The plenum extension (A)
must therefore have a minimum height of
18 1/2'' (470 mm).
Warning: The plenum extension (A)
should not obstruct the openings for the
hot air distribution of the plenum (B). The
shaded area represents the maximum
cutting of plenum extension (A).
5.1.3 Adjustable height of the plenum (A and B); without cutting 73" to 88" (185 to
224 cm).
For ceiling height greater than 84"
(213 cm).