Ceiling Cassette Installation Manual

DURASTAR.COM
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4. This unit is equipped with a drain pump that allows the outlet of the drain pipe to be higher than
the pipe's connecting port. The vertical lift pipe must be installed no higher than 29 1/2" (750mm)
from the ceiling board with a maximum distance of 11 3/4" (300mm) between the unit and the
lift pipe. To prevent air bubbles, make sure the pipe between the unit and the lift pipe is level or
slightly tilted up (0-3"). Install hanging wires every 39-59" to keep the drain pipe from sagging,
and wrap the indoor portion of the pipe with foam pipe insulation to prevent condensation.
Incorrect installation can cause water to flow back into the unit and leaks.
STEP 4: CONNECT DRAIN PIPE
The drain pipe is used to drain condensate water away from the unit. Improper installation may cause
leaks and unit or property damage.
1. Connect the drain pipe (field supplied) to the unit's connecting port using a metal worm clamp.
Make sure it secured tightly and can not be easily pulled loose.
2. Insulate the connecting port and pipe with the accessory sheath (sleeve) provided.
Drain pipe
connecting port
Drain pipe
Metal clamp
Insulation
Downward slope
1/100
(1-1.5m)
39-59”
(750mm)
≤29 1/2”
Ceiling
(1-1.5m)
39-59”
0-3”
(0-75mm)
≤11 3/4” (300mm)
(530mm)
≤20 7/8”
(220mm)
8 5/8”
Model
DRAC09F1A 1” (25mm)
DRAC12F1A 1” (25mm)
DRAC18F1A 1” (25mm)
DRAC24F1A 1” (25mm)
Drain Pipe
Inner Diameter
3. For gravity draining, install the drain pipe with a downward slope of at least a 1/100 gradient to
prevent water from flowing back into the unit. To keep the drain pipe from sagging, install hanging
wires every 39-59". Wrap the remaining indoor portion of drain pipe with foam pipe insulation to
prevent condensation.