Salus RT500BC Instruction Manual page 12

BOILER CONTROL MANUAL OVERRIDE
The AUTO/MANUAL switch allows you to turn on the
Boiler Control manually if required.
MANUAL AUTO
When the switch on the Boiler Control is in the AUTO (normal) position, the
Boiler Control will automatically receive the RF signal from the RT500 and
control the boiler based on the programming of the RT500.
The user can also move the switch to the MANUAL position; when in this
mode, the boiler will be always turned on and the LED indicator will also be
lit constantly. The manual mode is only to be used as a temporary control if
problems develop with the communication from the RT500.
12 RT500BC INSTRUCTION MANUAL