Lennox Merit CBA25UHE Installation Instructions Manual page 7

Air handler units
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FIGURE 5. Left-Hand Discharge Configuration
NOTE – Be very careful when reinstalling the screws into
the coil end plate engaging holes. Misaligned screws may
damage the coil.
8 - From the upflow position, flip cabinet 90º to the
left and set into place. Replace blower assembly.
Secure coil in place by bending down the tab on the
cabinet support rail as illustrated.
9 - Knock out drain seal plate from access door. Secure
plate to cabinet front flange with screw provided.
10 - Flip access door and replace it on the unit.
11 - Set unit so that it is sloped 1/4ʺ toward the drain
pan end of the unit. Connect return and supply air
plenums as required using sheet metal screws.
12 - If suspending the unit, it must be supported along the
entire length of the cabinet. If using chain or strap,
use a piece of angle iron or sheet metal attached
to the unit (either above or below) so that the full
length of the cabinet is supported. Use securing
screws no longer than 1/2ʺ to avoid damage to coil
or filter, as illustrated in figure 3. Connect return and
supply air plenums as required using sheet metal
screws.
DOWNFLOW APPLICATION
NOTE – If downflow application is required, separately or-
der kit number Y9658 (-024 through -030) or Y9659 (-036
through -042) and install per kit's instructions. Also use
metal or class I supply and return air plenums.
Use the installation instruction provided with the downflow
kit.
If electric heat section with circuit breakers (ECBA25) is
installed in a CBA25UHE unit in a downflow application,
the circuit breakers must be rotated 180° to the UP
position. See ECBA25 installation instructions for more
details.
Page 7
IMPORTANT

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