Lennox International Inc CONDENSING UNITS, Merit Series 14ACX Units Electrical, 24VAC Transformer

	WARNING						defined as any gas that will not condense under
							temperatures and pressures present during operation of
							an air conditioning system. Non−condensables and water
Danger of Equipment Damage. Avoid deep vacuum
							suction combine with refrigerant to produce substances
operation. Do not use compressors to evacuate a
							that corrode copper piping and compressor parts.
system. Extremely low vacuums can cause internal
arcing and compressor failure. Damage caused by									IMPORTANT
deep vacuum operation will void warranty.
							Use a thermocouple or thermistor electronic vacuum
							gauge that is calibrated in microns. Use an instrument
		CAUTION					capable of accurately measuring down to 50 microns.
Brazing alloys and flux contain materials which are							Electrical
hazardous to your health.							In the U.S.A., wiring must conform with current local codes
Avoid breathing vapors or fumes from brazing							and the current National Electric Code (NEC). In Canada,
operations. Perform operations only in well ventilated							wiring must conform with current local codes and the current
areas.							Canadian Electrical Code (CEC).
Wear gloves and protective goggles or face shield to							Refer to the furnace or air handler installation instructions
protect against burns.							for additional wiring application diagrams and refer to unit
Wash hands with soap and water after handling brazing							nameplate for minimum circuit ampacity and maximum
							overcurrent protection size.
alloys and flux.
							24VAC TRANSFORMER
							Use the transformer provided with the furnace or air
Evacuating the system of non−condensables is critical for							handler for low-voltage control power (24VAC − 40 VA
proper operation of the unit. Non−condensables are							minimum)
SIZE CIRCUIT AND INSTALL SERVICE						INSTALL THERMOSTAT
DISCONNECT SWITCH						Install room thermostat (ordered separately) on an inside wall
						approximately in the center of the conditioned area and 5 feet (1.5m) from
Refer to the unit nameplate for minimum circuit ampacity, and maximum						the floor. It should not be installed on an outside wall or where it can be
fuse or circuit breaker (HACR per NEC). Install power wiring and properly						affected by sunlight or drafts.
sized disconnect switch.
			MAIN FUSE BOX/				THERMOSTAT
			BREAKER PANEL
				SERVICE
			DISCONNECT
					SWITCH			5 FEET
									(1.5M)

NOTE Units are approved for use only with copper conductors. Ground unit at disconnect switch or to an earth ground.

NOTE 24VAC, Class II circuit connections are made in the control panel.

WARNING

Electric Shock Hazard. Can cause injury or death. Unit must be grounded in accordance with national and local codes.

Line voltage is present at all components when unit is not in operation on units with single-pole contactors. Disconnect all remote electric power supplies before opening access panel. Unit may have multiple power supplies.

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