Trane HUV Installation, Operation And Maintenance Manual page 11

Programming: Tracer UC400 Programmable Controller),
or the most recent version.
Figure 2. Tracer UC400 unit controller
When Trane controls are ordered for an installation, the
controls are shipped already installed and factory-tested
to ensure proper operation at start-up.
Notes:
• For more details on the ZN520 unit controller option or
operation and service/replacement issues, please refer
to CNT-SVX04A-EN (Installation, Operation, and
Programming Guide: Tracer ZN520 Unit Controller), or
the most recent version.
• For more details on the UC400 unit controller option or
operation and service/replacement issues, refer to
BAS-SVX48B-EN (Installation, Operation, and
Programming: Tracer UC400 Programmable
Controller), or the most recent revision.
Automatic Controls
Regardless of type of controls, all systems provide a
sequence of operation designed to provide rapid warm-up
of the room and increase ventilation while offsetting
overheating.
In addition, air conditioning installations will usually
provide a means of system changeover from heating to
cooling as well as provisions for drawing a pre-determined
amount of outside air into the room.
Unit Switch
The unit "On-Off" switch, provided by Trane, is typically
housed in the control box mounted in the left hand end
pocket immediately below the discharge grille.
When Tracer ZN520 or Tracer UC400 unit controllers are
used, the unit switch is located on the switch module in the
end pocket behind the front panel rather than below the
grille.
UV-SVN02C-EN
General Information
11