3
802961 Rev. 00
Reducing Load
To reduce the cooling load, draw drapes or blinds in the
summer, to reflect direct rays from the sun.
To reduce the cooling and heating load, keep windows and
doors closed when operating the unit.
WALL SLEEVE CABINET INSTALLATION:
Install the wall sleeve cabinet in strict accordance with the
wall sleeve installation instructions, which are supplied with
the wall sleeve.
ELECTRICAL WIRING AND RECEPTACLE
WIRE SIZING
A single outlet branch circuit from the main electrical panel
to the receptacle in the wall sleeve should be used. Wire
sizing shall be in accordance with the minimum circuit
ampacity as declared on the unit Rating Plate for the specific
chassis. Wire sizing must also take into account any distance
from fuse box to receptacle to prevent excessive voltage
drops in undersized wires.
IMPORTANT:
Low voltage to the unit will cause
compressor starting problems and decrease the performance
and reliability of the compressor.
BRANCH CIRCUIT PROTECTION
The Current Rating of branch circuit protection using a Time
Delay Fuse or HACR circuit breaker should also be as
declared on the unit Rating Plate, for the specific chassis
being installed.
PLUG AND RECEPTACLE
All 230-208 Volt units are furnished with a NEMA 6-20P,
20 Amp non-locking plug, and hence will require a NEMA
6-20R receptacle to be field-provided.
All 115 Volt units are furnished with a NEMA 5-15P, or 5-
20P non-locking plug as applicable. The respective plug will
require a NEMA 5-15R or 5-20R receptacle to be field-
provided.
All 277 Volt units are furnished with a NEMA 7-20P, 20
Amp non-locking plug, and hence will require a NEMA 7-
20R receptacle to be field-provided.
Note: 277 Volt units are considered to be permanently
connected, per the National Electrical Code. The plug and
cord are considered to be a “connector of convenience” in
order to facilitate easy removal of the chassis for servicing.
The plug and cord are suitably protected when using the
non-optional 277 volt sub-base.
230-208 and 115 volt units are true “cord connected units”,
and are provided with a service cord of the LCDI (Leakage
Current Detection Interrupter) type, intended to be plugged
in to a wall receptacle. The LCDI cord is capable of
detecting some of the common faults experienced with aging
power cords, and when those faults are detected, interrupts
power to the cord before a hazardous condition can evolve.
The LCDI service cord, with its bulky plug head and
inherent mechanical protection, is not intended to be plugged
into a receptacle in a subbase.
WARNING:
To avoid property damage, bodily injury or
death, the unit must be used on a grounded power supply
only. The unit will be grounded through the service cord
plug and matching receptacle as long as the branch circuit
remains grounded.
DO NOT:
x
Change the length of the service cord.
x
Bend the connector blades or otherwise alter
service cord plug configuration.
x
Use extension cords.
