Install Manual

4
bottom of the “L” flange with the two dimples and attach using
filed--supplied thread--cutting screws.
For the second “L” flange, align flange with the three dimples to
the right of the return and the two dimples above the return and
attach using field--supplied thread--cutting screws.
NOTE: The factory--installed screws to the right of the return
should not be removed in this process.
3 Factory Installed Screws
(Must not be removed)
Remove 4 screws from left side
of duct opening and reuse to
install the left half of duct
flange.
X = Factory dimples for duct flange attachment.
Install supply duct flange
as shown into existing holes
with field-supplied screws.
A10081
Fig. 3 -- Installing Factory--Supplied Duct Flanges
PH4Z