Bradford White 20A Instruction Manual download pdf (Page 22)

Servicing Guide continued-

When installing the control refer to the direction of the arrow on the hex and

insure that it is pointing upwards. If it is not pointing upward, the control

switch will not activate when the tank is refilled with water. Refer to Figure 7

for clarification.

Figure 7

Alarm Horn

The Alarm Horn is an option specified when the installation desires an

audible signal to immediately sound an alert when the water heater

operation is interrupted for certain faults. Referring to the control circuit

wiring diagram, the alarm will activate when any one of the following events

occur:

• The Hi-Limit control has been tripped

• The High Water Pressure Control senses excessive pressure

• The Low Water Pressure Control senses insufficient pressure

• The Low Water Level Control senses an insufficient quantity of water

The alarm will sound only for the options specified (i.e. if a low water level

control is not specified then the alarm will not recognize a low water level

condition). Referring to the Control Circuit Wiring Diagram, observe the horn

relay that is employed to correctly apply the horn to the control circuit.

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Bradford White 20A Instruction Manual Page 22