Installation

STEP 2
Thumb screw hole location
(This step is necessary only if thumb screws
were not previously used.)
1. Slide the new transition duct into place. Push
it all the way in until it stops. Make sure the
transition duct is straight and not “cocked”
relative to the lateral duct adapter.
2. Center punch the transition duct mounting
screw hole locations into the lateral duct
adapter. Use the holes in the flanges at each
end of the transition duct as a template. Make
sure that the transition duct is all the way back
when the center punch impressions are made.
3. Remove the transition duct and drill two 1/4”
diameter holes at the center punch locations.
Slide the metal clips onto the flanges at these
holes as shown in the illustration.
Transition duct
Lateral duct
adapter
Metal clip
(flat side
down)
STEP 3
Chassis modification and
installation
1. Remove the room cabinet front by pulling out at the
bottom to release it. Lift it up to clear the rail along
the chassis top.
2. Slide the chassis into the case and secure with the
four screws supplied with the Zoneline unit through
the chassis flange holes.
3. Remove and save the four screws securing
the louver to the chassis. Lift up and
remove louver.
4. Align the metal seal strip as shown and secure
with the four louver mounting screws.
Metal seal strip
Louver
2