Oasys SEER 40 PLUS Owner's Manual - page 19
OASys Owner’S MAnuAl | www.oasysairconditioner.com | 800-537-2107
18
InSTAllATIOn InSTruCTIOnS continued
PREPARATION FOR MOUNTING
Preparation for mounting the OASys will vary with each installation type. refer to application informa-
tion for the specific type of installation (Wall, Rooftop, or Pad). Be sure to install a drain pan under the
unit if installing in an area subject to water damage. To avoid water spillage during operation, the unit
must be installed on a dead-level surface or plenum, or mounted to a “plumb” wall.
UNPACKING AND INSPECTION
Parts Included
Parts shipped with the standard OASys unit include the cabinet with blower, media assembly, and con-
troller; thermostat, and thermostat wire (with modular connectors pre-installed). Optional parts include
ceiling and/or wall dampers, wall mount duct, and intake air plenum
The blower Assembly includes the blower housing, and motor. The Ge motor incorporates electronic
components which should not be exposed to moisture.
The Media Assembly is composed of the plastic indirect media, Celdek cellulose media, water distribu-
tion system, and shroud.
The Cabinet encloses the blower and media assembly, and supports the circulating pump, fill valve, and
drain pump. The control box, which contains the control board, is mounted inside the cabinet behind
the upper access panel. Power connections are made in the lower partitioned area of this box.
INSTALLATION
CAbINET INSTALLATION
regardless of mounting location, the cabinet must be installed “plumb”. water leakage may occur if the
unit is installed at an angle. Important: recommended installation is outside on a pad or rooftop mount.
It is not recommended to install the OASys in an attic.
On outdoor installations performance may be improved if installation is out of direct sun light or insula-
tion is used to block the sun from the cabinet and ducting.
DUCTING
First, you should determine if you are installing a CrS 1000 or CrS 1100 unit. both units are essentially
identical but have different UL ratings. The CRS 1000 unit is “UL Classified” as a ducted unit. The CRS
1100 is “ul listed” as a room unit. If you are installing a CrS 1100 unit a short duct run to a single
room can be used.
Install ducting in accordance with applicable codes, and applications information provided by your dealer.
Ducts should be sized using ACCA Manual D or other methods for a maximum total pressure drop of
0.25” external static pressure. Avoid use of fiberglass board or fiberglass duct lining. If ducts are to be
lined for sound attenuation or prevention of heat gain, use AP Armaflex SA duct lining or an equivalent
product. Tightly sealed and insulated ducts will insure that the OASys delivers its full cooling capacity.
WATER CONNECTIONS
Connections are ¾ “ garden hose fittings.