Trane UV-SVN02B-EN, Installation Operation & Maintenance, Page: 4 / 52

General Information
4 UV-SVN002-EN
Configuration
The classroom unit ventilator is config-
ured in both a:
• horizontal (ceiling mount)
• vertical (floor mount)
configuration. The units range from 750
cfm to 2000 cfm for the horizontal con-
figuration, and from 750 cfm to 1500
cfm for the vertical configuration.
Cabinet
The units are constructed of 14- and 16-
gauge zinc coated steel. All steel sur-
faces are cleaned, phosphatized, rinsed
and dried before application of final fin-
ish paint. The paint is applied by an
electrostatic powder spray system, min-
imum thickness of 1.5 mil which results
in an appliance grade finish.
Front Panels
The front panels are retained by Allen
wrench operated locks which open with
a 180-degree rotation. The vertical front
panel is constructed of either 14 or 16
gauge material dependent upon model
option selected.
End Pockets
Unit Ventilators are equipped with end
pockets to provide field installation of
valves, piping, and controls. The units
have a large pipe access opening in
both end pockets and large knockouts
for piping and electrical connections.
All electrical connections are made in
the left-hand end pocket, with exception
of units equipped with the electric heat-
ing coil option.
Drain Pan
The drain pan is positively sloped in all
planes to assure proper drainage and
help eliminate the risk of microbial
growth. To help ensure indoor air quali-
ty, the drain pan is insulated on the bot-
tom to help prevent condensate forma-
tion. The drain pan can be easily
removed for cleaning purposes. A drain
plug is located on each end of the drain
pan on the vertical unit. The drain pan
is drilled-out and pitched toward the
cooling coil connection during assem-
bly per model number selection.
Fanboard
The fanboard assembly is acoustically
designed in a single, rigid assembly
that includes the fans, fan housing,
bearings, fan shaft and motor. The fan
motor is mounted on the fanboard. The
fanboard is made from 14 gauge galva-
nized steel to resist corrosion and
increase strength.
115V Motor
The motor is a single speed permanent
split capacitor with thermal overload
protection. A multiple tap auto-trans-
former is wired to the motor to provide
different speed settings. The motor
speed is not affected by damper posi-
tions. Standard motors are rated up to
0.25 ESP. High static motors are rated
from 0.25 ESP to 0.45 ESP.
Motor bearings are permanently lubri-
cated. Isolation of the motor is provided
internally at the union shaft.
Sampling Chamber (Option)
A sampling chamber is provided for
housing the room air sensor whenever
a unit mounted sensor is specified for
Tracer ZN520 controls (Figure 1). The
sampling chamber is placed below the
air-coil where room air is continuously
drawn into the chamber before being
tempered by the coil. This ensures an
accurate response to temperature
changes in the room.
Filter
Standard units are equipped with a sin-
gle 1-inch thick filter that is accessible
without removal of the unit front panel.
Filter options include throw-away and
permanent renewable.
Dynamic air barrier units contain two
filters (1-standard/1-return air). The
return air filter requires front panel
removal for filter access.
OA/RA Damper
Trane unit ventilators are equipped with
dual blade type mixing damper to
ensure proper modulation and mixing
of return and outdoor air designed in
accordance to ARI 840. A splitter is
placed between the damper blades to
separate the fresh-air and return-air
compartments to prevent draft blow-
through.
An ultra low-leak damper seal is
applied on all vertical unit configura-
tions. The seal consist of a medium
density, closed-cell neoprene material.
The seal is fixed and not part of the
damper assembly. The outside-air
damper closes into the closed cell neo-
prene material, providing a positive
pressure seal.
Figure 1: Sampling Chamber