Page 6
IM 818
Hang the unit on the rods using washers and locknuts.
Adjust the unit height to 1" above the finished ceiling surface
and level in all directions (See Figure 4).
Figure 4. Unit Hanging
Drain Piping
Drain pipe must be pitched away from the unit for good
drainage (See Figure 5).
The outside diameter of the drain connection is 3/4". Use
flexable coupling with 3/4" ID (See Figure 6) .
Insulate drain pipe to prevent sweating.
Figure 5. Drain Piping
Drain Test
Connect the flexible coupling to the drain pipe.
Bend coupling upward and pour water in to check the piping
for leakage (See Figure 6).
When the test is completed, connect the flexible coupling to
the drain connection on the indoor unit.
Figure 6. Drain Test
Condensate Pump
The condensate pump will be on whenever compressor is on.
The pump will remain on for at least 5 minutes after the com-
pressor stops. Max head is 27" H
2
O.
Water Level Switch
This normally closed switch will open and turn off the com-
pressor if the condensate level gets to high.
If it closes within 5 minutes, the compressor will turn back
on. If the switch does not close for more than 5 minutes, the
system will warn user regarding the fault and the compressor
is not allowed to cut in. If the switch is confirmed opened
twice within 30 minutes, the compressor will stay off and
indicator lights will show fault (See Mode and Diagnostic
Chart, page 21).
Front Panel Installation
Open the air intake grille by pulling back the latches and
remove it together with the filter from the panel (See Figure
7).
Attach the front panel to the indoor unit with 4 screws. Make
sure the seals contact the indoor unit to prevent air leakage
(See Figure 9).
Figure 7. Front Panel Installation
10 1/2
"
8" 6 1/2"
1"
Finished Ceiling Surface
1 1/2"
Drain Line
Liquid Line
Gas Line
13 3/4
"
Indoor Unit
Pipe Clamp
GOOD
BAD
Pour Water In Here
Flexible
Coupling
Drain Pipe
OPEN
SCREW
