Trane HUV Installation Operation & Maintenance page 43

UV-PRC001-EN
Application
Considerations
Ducted Discharge
When selecting ducted discharge
for a horizontal unit ventilator, the
location of the discharge ducting
could be critical to other design
features of the job. Recessed
lighting may interfere with unit
ductwork when working within
the tight constraints above the
ceiling grid. Trane offers three dif-
ferent ducted discharge locations
to aid in the design layout of the
job.
Note: When a high external static
pressure motor is used on a
ducted system, the return-air
should enter through a rear duct
connection. The return-air should
pass through a lined return-air
duct with at least one 90-degree
elbow to lower noise.
Condensate Piping
The unit ventilator drain pan con-
nection is located on the same
side as the cooling coil connec-
tions on all hydronic or DX units.
The stubout connection size is 3/4-
inch O.D.
All field supplied condensate lines
to the unit should contain a 1/4-
inch in 12-inch slope away from
the unit ventilator. This is typical
for most local codes. A trap is also
typically provided somewhere in
the system.
Note: Drain pan connections are
field convertible.
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