71
Connecting the Power Supply
If you are not using your boiler for a long period of
time:
1. Completely drain the water out of the boiler.
2. Disconnect the power supply to the boiler.
This prevents your boiler from freezing and being
damaged.
WARNING
Electric Shock Hazard
To prevent serious injury or death:
●
ALWAYS label all wires before disconnecting
them when you work on the controls.
●
Wiring errors can cause improper and
dangerous operation.
●
ALWAYS verify proper operation after
servicing.
Содержание NHB H Series
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