Bradford White 20A Instruction Manual download pdf (Page 13)

Electrical Connections

Before any electrical connections are attempted, be sure the water heater is

full of water and that the manual shut-off valve in the cold water supply line is

open. Heating elements, which have been energized for a very short period

of time, can be damaged (burned-out) if they are not completely immersed in

water. This warranty does not cover burned-out heating elements. Check

the rating plate and wiring diagram before proceeding. This electric water

heater was manufactured and wired in accordance with the Underwriters

Laboratories testing approvals requirements. The temperature-limiting

device is of the manual reset, trip-free type and has been factory installed to

interrupt all ungrounded power supply conductors in the event of thermostat

failure. The plumbing supplier in your area ordered this water heater wired

at the factory to comply with existing area codes, but local utility codes may

require or allow other circuitry. Consult your local power company to

determine the correct electrical hook-up in order to meet local utility and

building codes and in order to obtain the most economical rates. All

electrical connections to elements, thermostats, contactors, fuses (certain

models), and transformer have been made at the factory. DO NOT alter any

of the internal wiring. Wiring connections may loosen during shipment.

Check all connections for tightness.

To make the wiring connections to a power supply, follow the steps below.

A) Open the cover door of the control box.

B) Bring the power leads from an adequately fused disconnect switch (not

furnished with the water heater due to varying state and local codes) and

connect to the terminal block. Local ordinances and/or utility company

may require an increase in the gage size of the wiring for conditions

where long wiring lengths exist.

C) This water heater must be properly grounded. A ground lug is

provided within the electrical control box for connection to a properly

sized ground. (See wiring diagram for minimum required ground size.

The wiring diagram is located on the inside door of the control box)

D) Close the cover door of the control box.

Heating Elements

To replace heating elements, disconnect power to the water heater, drain

tank and replace element. To remove a heating element, use a screw type

element wrench (1 1/2” or 2 3/8”) available from most supply houses. Do

not over-tighten the new element, as this will cause distortion in the new

element gasket. Once the element has been replaced, follow the

instructions “To Fill The Water Heater”. It is imperative that the water heater

is full before power is restored to the heating elements.

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Bradford White 20A Instruction Manual Page 13