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Connect power wiring to the electrical power block
located within the main control box.
Control Box
THERMOSTAT WIRE
POWER SUPPLY
LINE VOLTAGE (L1, L2)
GROUND LUG
3T-5T AC Control Box
THERMOSTAT WIRE
POWER SUPPLY
LINE VOLTAGE (L1, L2)
GROUND LUG
6T AC Control Box
NOTE: Depending on the options installed, the
location of the components may vary in some
models.
WARNING
Failure of unit due to operation on improper line voltage or
with excessive phase unbalance constitutes product abuse
and is not covered by the warranty and may cause severe
damage to the unit electrical components.
Areas Without Convenience Outlet
It is recommended that an independent 115V power source
be brought to the vicinity of the roof top unit for portable
lights and tools used by the service mechanic.
NOTE: Refer to local codes for requirements.
These outlets can also be factory installed.
Units installed on Roof Tops
Main power and low voltage wiring may enter the unit
through the condenser end of unit or through the roof curb.
Install conduit connectors at the desired entrance locations.
External connectors must be weatherproof. All holes in the
unit base must be sealed (including those around conduit
nuts) to prevent water leakage into building. All required
conduit and fittings are to be field supplied.
Supply voltage to roof top unit must not vary by more than
10% of the value indicated on the unit data plate. Phase
voltage unbalance must not exceed 2%. Contact your local
power company for correction of improper voltage or phase
unbalance.
4-1/2"
47-9/16"
7-1/2"
4-1/16 DIA.
POWER THRU
THE CURB
RETURN
19-3/8
31-3/8
LOW VOLTAGE
ENTRANCE
HIGH VOLTAGE ENTRANCE
(REMOVE PLUG)
Electrical Entrance and thru Curb
(Bottom View of Unit)
Low Voltage Control Wiring
1. A 24V thermostat must be installed for unit operation
unless the unit is equipped with factory installed
DDC control.
2.
Locate thermostat or remote sensor in the
conditioned space where it will sense average
temperature. Do not locate the device where it may
be directly exposed to supply air, sunlight or other
sources of heat. Follow installation instructions
packaged with the thermostat.
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