RL SERIES INSTALLATION MANUAL
Control Box
Condensate
Drain
Water Supply
and Return
Connections
Flexible duct
Collar
ACCESS
PANEL
ACCESS
PANEL
PANEL
ACCESS
Figure 6: Typical Vertical Application
Installing Vertical Units
Mounting Vertical Units
Units are available with top/side discharge, left-hand or right-hand return air configurations. Vertical units are assembled on rails which
facilitate moving and placement of the units. It is not necessary to anchor the unit to the floor.
Duct System
A supply air duct flange is provided for field installation to facilitate the secure duct connection at the job site. A flexible connector is
recommended for discharge and return air duct connections on metal duct systems to prevent vibration transmission. It is recommended
that all ductwork be insulated with a minimum of 1/2-inch coated insulation. Installation of the units with uninsulated ductwork in an
unconditioned space is not recommended, as the system’s performance will be adversely affected.
Condensate Drain
In vertical units, the internal condensate drain assembly consists of a flexible drain tube which is attached to the drain pan and a 3/4-inch
(7-10 tons) and 1-inch (13-25 tons) female pipe thread. An external water trap is not required as the drain tube serves as a trapping loop.
The field-installed piping and unit connection must be properly installed and sealed to prevent water leakage.
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