7
Duct opening sizes
Model
A(mm)
B(mm)
009-012
450
332
015-024
521
381
030-036
572
432
042-060
675
482
Installation and checklist
Return duct opening panel
A return duct opening frame is added
to the return opening for horizontal unit
to alternate between direct air return
and air return from the return duct. In
lieu of filter rack, duct opening panel
can be equally sealed. Duct flange is
used for field piping ease, as shown in
Figure 8.
Figure 7 Duct Opening Frame Diagram
D
UCT
P
A
N
EL
w
ith
1 1/
2”
-FL
A
N
G
E
1
”
Un
it
To
p
A
Un
it T
a
p
Un
it
S
ide
Un
it
S
ide
3 3/4
”
B
Summary of Contents for Axiom GEHB
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