PTAC Owners Manual

ELECTRICAL DATA
ELECTRICAL SHOCK HAZARD
!
WARNING
Table 1—SUGGESTED BRANCH CIRCUIT WIRE SIZES*
NAMEPLATE AMPS
AWG WIRE SIZE
7.0 to 12 14
12.1 to 16 12
16.1 to 24 10
Grounding
RECEPTACLE
AMPS 20 30 20 30
277 277
20 30
RATED VOLTS 250 250
TIME---DELAY TYPE FUSE
(or HACR Circuit Breaker)
20* 30
LEGEND
Failure to follow this warning could result in personal injury or death and/or property damage
DO NOT alter cord or plug or use an extension cord.
POWER CONNECTION OPTIONS
Appropriate power cord accessory kit is determined by the voltage, and amperage of the branch circuit.
IMPORTANT: For 265V units, if power cord accessory option is selected, the cord is only 18”
long and must plug into the accessory electrical 265V subbase.
Be sure that your outlet matches the appropriate blade configuration of the plug and that it is within reach of
the service cord. All wiring, including installation of the receptacle, must be in accordance with the NEC
and local codes, ordinances and regulations. National codes require the use of an arc fault or leakage current
detection device on all 208/230V power cords. Be sure to select the correct cord for your installation.
ALL UNITS
Wire Size
Use recommended wire size given in Table 1 and install a single branch circuit.All wiring must comply
with local and national codes. All units are designed to operate offONE single branch circuits only.
NOTE: Use copper conductors only.
LEGEND
AWG --- American Wire Gauge
* Single circuit from main box.
Based on copper wire at 60℃temperature rating.
For safety and protection, the unit is grounded through the service cord plug or through separate ground
wire provided on hard wired units. Be sure that the branch circuit or general purpose outlet is grounded.
VOLTAGE SUPPLY
Check voltage supply at outlet. For satisfactory results, the voltage range must always be within the
ranges found on the data information plate.
Cord--connected Units
The 250--v field supplied outlet must match the plug for the standard 208/230-v units and be within reach
of the service cord. The standard cord--connected 265-v units require an accessory electrical subbase
for operation. Refer to Table 2 for proper receptacle and fuse type.
Power Cord Protection
The power cord for 230/208v units provide power cord fire protection.Unit power automatically
disconnects when unsafe conditions are detected. Power to the unit can be restored by pressing the reset
button on plug head.
Upon completion of unit installation for 230/208V models, an operational check should be performed
using the TEST/RESET buttons on the plug head.
NOTE: The 265v models do not incorporate this feature as they require use of the electrical subbase accessory.
Table 2—RECEPTACLES AND FUSE TYPES -- 250, 277 VOLTS
HACR -Heating, Air Conditioning, Refrigeration
* May be used fro 15-amp applications
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