Carrier Packaged Terminal s & Heat Pumps 52P - Manual (Page 19)

19
Outdoor Grille Selection
The following guidelines must be followed in the ini-
tial selection of any alternate exterior grille or louver:
1. The louver must have a minimum of 65% free area.
Free area is the minimum area of the opening in an
air inlet or outlet in which air can pass. Free Area
(%) = X/Y.
2. The louver should be attached to the wall sleeve in a
manner that will prevent recirculation of condenser
discharge air into the inlet. In most applications, baf-
fles, splitters, and/or gasket will be required between
the chassis tube end sheets and the louver to prevent
air recirculation.
The above criteria must be followed, since a louver
that is restrictive or allows recirculation will result in a
reduction of the unit’s capacity and efficiency and will
ultimately shorten the compressor life.
Hardwire Kit
Part No.: HARDWIRE-KIT-1PK
This accessory hardwire kit provides a permanent con-
nection to the unit. Electrical hard wiring is required
when NEC (National Electrical Code) or local codes
restrict the use of power cord and plug connections.
The hardwire kit mounts on the front right side of the
unit and comes with 36 inches of flexible steel conduit
and a Molex connector for easy connect/disconnect.
Conduit Interface Kit
Part No.: CONDUIT-INTF-4PK
The conduit interface accessory kit provides the wire
connection to the unit to interface to field-supplied
conduit.
IMPORTANT: If you wish to use a grille not
made by Carrier for your Carrier unit(s), con-
tact the Carrier Application Engineering Group
at 1-800-894-6449.
X
Y
X
Y
X
Y
X
Y
Sample Calculations
Free Area (%) =
x
x 100
y
x = 1 ″
y = 1.5 ″
F.A. (%) =
1
x 100 = 66.7%
1.5
Louver Dimensional Reference
Hardwire Kit
Conduit Interface Kit