Bradford-White Corp Commercial Electric Water Heaters Optional Equipment Components and Controls

OPTIONAL EQUIPMENT COMPONENTS AND CONTROLS

The following items are available as extra cost options.

•Electronic low water cut-off prevents energizing of the heater when it is not filled with water.

•Pilot lights – Monitor on-off cycle of contactors.

•Manual limiting switches with indicating lights to permit heater kW input to be manually limited as desired.

•Temperature and pressure gauges are available installed flush with the jacket to monitor heater performance.

•Electronic step controller modulates power in-put and balances load to demand.

•Safety door interlock prevents opening of access door while heater is energized.

•Shunt trip disconnect provides power disconnect upon a control sensed malfunction.

•Alarm bell provides an audible alarm to warn of various control failures.

•Time clock to control off-on cycles of the heater as programmed by the owner or electric utility requirements.

•Low water pressure switch.

•High water pressure switch.

	TERMINAL BLOCK	GROUND LUG
			CONTROL
	POWER CIRCUIT FUSE BLOCK		CIRCUIT
			FUSE BLOCK
IMMERSION
THERMOSTAT			TRANSFORMER
LOW WATER
CUTOFF	CONTACTOR		CONTROL
(IF EQUIPPED)
	(IF EQUIPPED)
			CIRCUIT
			FUSE BLOCK
FIG. 12 Electrical Panel Component Location
Drawing

TERMINAL BLOCK

LOAD LINE

FIG. 13 Main Power Terminal Block

A main power terminal block is provided for field connection of the branch power supply to the electric water heater. All internal power circuits to the immersion heating elements are connected to the load side of the main terminal block. The line side of the terminal block has individual lug type connections properly sized for the recommended copper field wire size.

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