Daikin Skyline OAH003GDAC Installation And Maintenance Manual page 70

Removing the Fan Section
For plenum fan assemblies, the entire fan cabinet may need
to be removed to replace the entire fan assembly depending
on the length of the fan section. In some cases, the fan section
is not long enough for the assembly to fit out the side of the
cabinet. For those cases where it will fit, follow the above steps
except the neoprene seal is a D-gasket on the inlet side that
needs to be removed for plenum fans. Otherwise, the entire
fan cabinet must be removed from the other sections and then
the fan assembly can be removed out the discharge side of the
cabinet.
Removing and Replacing the Coil
Removing Single Coils
NOTE: Single coils are bolted to the unit on the connection
end. The connection end is held in place with a
clamp.
1. Disconnect all piping and remove the brass plugs for the
vents and drains located in the connections.
2. Remove all screws and remove the access panel.
3. Remove the screws holding the coil in place.
4. Lift and pull the coil out the side.
Installing Single Coils
1. Slide the coil through the opening in the coil section onto
the bottom coil rests.
2. To prevent any air bypass around the coil, place coils up
against the coil bulkheads. See
3. Once the coil is in place, fasten the coil to the section.
4. Caulk the seams between the coil casings and
bulkheads.
5. If this is an additional coil being installed and not
a replacement, locate the coil supply and return
connections dimensionally. Carefully drill holes in the end
panels of the unit.
6. Remove the brass plugs for the vents and drains on the
connections.
7. Slip the panel over the connections.
8. Replace the brass plugs and panel fasteners.
IM 777-18 • SKYLINE OUTDOOR AIR HANDLER
Figure 93.
Figure 96: Single Coil Top Installation/Removal
Figure 97: Single Coil Side Installation/Removal
Opposite connection end
Coil
Coil
Bulkhead
70
s M
ervICe and aInTenanCe
Connection end
Coil
Coil
Rests
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