40
Duct Connection
Note: If outside air will be in contact with the
air tunnel base of an A, B or C cabinet unit
(6-25 and 30 tons), the unit must include the
base insulation option or the base must be
field insulated. D and E cabinet (26 and 31-
140 tons) units include base insulation
standard.
Figure 15 - Duct Connection
Do not drill or punch holes in the base
of the unit, from inside the unit or from
below the unit to attach ductwork.
Leaking may occur if unit base is
punctured.
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