19
FIELD--INSTALLED ACCESSORIES (CONT.)
OUTDOOR GRILLE SELECTION
IMPORTANT: If you wish to use a grille not made
by Carrier for your Carrier unit(s), contact
Carrier Application Engineering.
The following guidelines must be followed in the
initial 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, baffles, 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 re--circulation will result
in a reduction of the unit’s capacity and efficiency
and will ultimately shorten the compressor life.
X
Y
X
Y
X
Y
X
Y
Louver Dimensional Reference
Sample Calculations
Free Area (%) =
x
x 100
y
x = 1
y = 1.5
F.A. (%) =
1
x 100 = 66.7%
1.5
Hardwire Kit
Part No.: 52M--HDWR--KIT--15A
52M--HDWR--KIT--20A
52M--HDWR--KIT--30A
This accessory hardwire kit provides a permanent
connection 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 easily mounts on the
front right side of the unit and comes with 36 inches
of flexible steel conduit.
A07381
Hardwire Kit
Conduit Interface Kit
Part No.: 52M--CONINT--15A
52M--CONINT--20A
52M--CONINT--30A
The conduit interface accessory kit provides an easy
wire connection to the unit to interface to existing
field--supplied conduit.
A07810
Conduit Interface Kit
52M