Carrier 48TC*D08 appendix Convenience Outlets, Non-Powered Type, Unit-Powered Type, Duty Cycle

CONVENIENCE OUTLETS

	!	WARNING
	ELECTRICAL OPERATION HAZARD
	Failure to follow this warning could result in personal
	injury or death.
	Units with convenience outlet circuits may use
	multiple disconnects. Check convenience outlet for
	power status before opening unit for service. Locate
	its disconnect	switch, if appropriate, and open it.
	Tag-out this switch, if necessary.
	Two types of convenience outlets are offered on 48TC
	models: Non-powered and unit-powered. Both types
48TC
	provide a 125-volt GFCI (ground-fault circuit-interrupter)
	duplex receptacle rated at 15-A behind a hinged
	waterproof access cover, located on the end panel of the
	unit. (See Fig. 16.)

Pwd-CO Transformer

Conv Outlet

GFCI

Pwd-CO

Fuse

Switch

C08128

Fig. 16 - Convenience Outlet Location

Non-Powered Type

This type requires the field installation of a general-purpose 125-volt 15-A circuit powered from a source elsewhere in the building. Observe national and local codes when selecting wire size, fuse or breaker requirements and disconnect switch size and location. Route 125-v power supply conductors into the bottom of the utility box containing the duplex receptacle.

Unit-Powered Type

Aunit-mounted transformer is factory-installed to stepdown the main power supply voltage to the unit to 115-v at the duplex receptacle. This option also includes a manual switch with fuse, located in a utility box and mounted on a bracket behind the convenience outlet; access is through the unit’s control box access panel. (See Fig. 16.)

The primary leads to the convenience outlet transformer are not factory-connected. Selection of primary power source is a customer-option. If local codes permit, the transformer primary leads can be connected at the line-side terminals on a unit-mounted non-fused disconnect or circuit-breaker switch; this will provide service power to the unit when the unit disconnect switch or circuit-breaker is open. Other connection methods will result in the convenience outlet circuit being de-energized when the unit disconnect or circuit-breaker is open. (See Fig. 17.)

CO8283

Fig. 17 - Powered Convenience Outlet Wiring

UNIT	CONNECT	PRIMARY	TRANSFORMER
VOLTAGE	AS	CONNECTIONS	TERMINALS
208,	240	L1: RED +YEL	H1 + H3
230		L2: BLU + GRA	H2 + H4
		L1: RED	H1
460	480	Splice BLU + YEL	H2 + H3
		L2: GRA	H4
575	600	L1: RED	H1
		L2: GRA	H2

Duty Cycle

The unit-powered convenience outlet has a duty cycle limitation. The transformer is intended to provide power on an intermittent basis for service tools, lamps, etc; it is not intended to provide 15-amps loading for continuous duty loads (such as electric heaters for overnight use). Observe a 50% limit on circuit loading above 8-amps (i.e., limit loads exceeding 8-amps to 30 minutes of operation every hour).

16