Lenox Elite Series XP14 Units HEAT PUMPS Electrical, 24VAC TRANSFORMER, 2INSTALL THERMOSTAT, Page

IMPORTANT

Use a thermocouple or thermistor electronic vacuum gauge that is calibrated in microns. Use an instrument capable of accurately measuring down to 50 microns.

WARNING

Danger of Equipment Damage. Avoid deep vacuum operation. Do not use compressors to evacuate a system. Extremely low vacuums can cause internal arcing and compressor failure. Damage caused by deep vacuum operation will void warranty.

Electrical

In the U.S.A., wiring must conform with current local codes and the current National Electric Code (NEC). In Canada, wiring must conform with current local codes and the current Canadian Electrical Code (CEC).

Refer to the furnace or air handler installation instructions for additional wiring application diagrams and refer to unit nameplate for minimum circuit ampacity and maximum overcurrent protection size.

24VAC TRANSFORMER

Use the transformer provided with the furnace or air handler for low-voltage control power (24VAC − 40 VA minimum)

SIZE CIRCUIT AND INSTALL DISCONNECT

1ReferSWITCHto the unit nameplate for minimum circuit ampacity, and maximum fuse or circuit breaker (HACR per NEC). Install power wiring and properly sized disconnect switch.

MAIN FUSE

BOX/BREAKER

PANEL

DISCONNECT

SWITCH

2INSTALL THERMOSTAT

Install room thermostat (ordered separately) on an inside wall approximately in the center of the conditioned area and 5 feet (1.5m) from the floor. It should not be installed on an outside wall or where it can be affected by sunlight or drafts.

THERMOSTAT

5FEET (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.

3	UNIT LOW VOLTAGE CONNECTIONS	HIGH VOLTAGE FIELD WIRING
		FACTORY WIRING
		LOW VOLTAGE (24V) FIELD WIRING
		WIRE RUN LENGTH	AWG# INSULATION TYPE
		LESS THAN 100’ (30 METERS)	18	TEMPERATURE RATING
		MORE THAN 100’ (30 METERS)	16	35ºC MINIMUM.
		ARun 24VAC control wires through cutout with grommet.
		BRun 24VAC control wires through wire tie.
	C	CMake 24VAC control wire connections defrost control terminal strip.
		DTighten wire tie to security 24V control wiring.
	TERMINAL STRIP
		NOTE − FOR PROPER VOLTAGES, SELECT THERMOSTAT WIRE (CONTROL WIRES)
		GAUGE PER TABLE ABOVE.
		NOTE − WIRE TIE PROVIDES LOW VOLTAGE WIRE STRAIN RELIEF AND TO MAINTAIN
		SEPARATION OF FIELD INSTALLED LOW AND HIGH VOLTAGE CIRCUITS.
	A	NOTE − DO NOT BUNDLE ANY EXCESS 24VAC CONTROL WIRES INSIDE CONTROL
		BOX.
	D B

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XP14 SERIES