5
ACCESSING UNIT COMPONENTS
ACCESSING INDOOR-AIR SECTION 
COMPONENTS
■  
REMOVE LATERAL DUCT EXTENSION 
ACCESSORY FOR UNITS EQUIPPED WITH THE 
LATERAL DUCT
1. Remove the 2 top screws that secure the lateral 
duct plenum to the top of the lateral duct exten-
sion. See Figure 8.
2. Locate and remove the 2 bottom bracket screws 
(located opposite extension duct) that secure the 
lateral duct plenum to the bracket flange. See   
Figure 8.
3. Carefully lift the plenum up and away from front 
panel and duct extension.
■  
REMOVE THE DISCHARGE DECK ASSEMBLY
1. Remove the front panel. Refer to Remove Front 
Panel section and Figure 4.
2. Remove discharge screen screw using a 
5
/
16
-in. nut 
driver. See Figure 9.
3. Remove the discharge deck assembly screws using 
a 
5
/
16
-in. nut driver. See Figure 9.
4. Gently pull the deck/grille up and away from the 
unit.
5. Reassemble by reversing steps above.
■  
ACCESSING THE HEATER ASSEMBLY
 — Once the 
discharge deck assembly is removed, the Heater 
Assembly should now be accessible. See Figure 10.
1. Using pliers, carefully remove all wires connected 
to the heater assembly. Label each wire for ease of 
re-assembly.
2. Gently pull the heater assembly up and away 
from scroll. See Figure 11. 
3. Reassemble by reversing steps above.
ACCESSING OUTDOOR-AIR SECTION 
COMPONENTS
■  
REMOVE THE GUSSETS (See Figure 12)
1. Remove the 2 screws on each side that secure the 
gussets to the partition.
2. Remove the 2 screws that secure the gussets to 
the plastic condenser orifice and remove the 
gussets.
POWER
CORD
ACCESS
COVER
POWER
CORD
CONTROL
BOX
SCREWS
GE WALL
SLEEVE
HOLES
AMANA, TRANE
(SLOTTED
HOLES) WALL
SLEEVE HOLES
VARIOUS ATTACHMENT
HOLE LOCATIONS
CARRIER, BRYANT
WALL SLEEVE
HOLES
FIGURE 6 — CONTROL BOX COVER
FIGURE 7 — PTAC UNIT TO WALL 
SLEEVE MOUNTING SCREWS