Connecting The Power Supply - Bosch Singular 4000 Installation Instructions Manual

8 Connecting the Power Supply

WARNING:
 Improperly connecting the power supply can result in
electrical shock and electrocution. Follow all applicable
electrical codes of the local authority having jurisdiction. In
the absence of such requirements, follow the latest edition
of the National Electrical Code (NFPA 70) in the USA or
the latest edition of CSA C22.1 Canadian Electrical Code
Part 1 in Canada. Connecting the power supply should be
performed only by a licensed professional.
When connecting the power supply, follow these guidelines:
 Do not connect the electric supply until all plumbing and gas piping is
complete and the boiler has been filled with water.
 Do not connect the boiler to a 220–240V AC power supply. Doing so will
damage the boiler and void the warranty.
 All boilers come with a factory-installed, 3-pronged (grounded) plug.
The boiler can be plugged into any grounded electrical outlet nearby, as
it requires only 5A. It is not necessary to run a dedicated electrical line to
the boiler.
 If local codes require the boiler to be wired directly, remove and discard
the factory- installed plug. Install a power switch between the breaker and
the boiler to facilitate end-user maintenance and servicing. Connect the
boiler to a 110–120V AC at 60 Hz with a maximum of 5A rating electrical
supply.
 The boiler must be electrically grounded. If using the power plug, ensure
that the electrical outlet you connect the boiler to is properly grounded. If
wiring the boiler directly to a power supply, do not attach the ground wire
to either the gas or the water piping as plastic pipe or dielectric unions
may prevent proper grounding.
 We recommend using a surge protector to protect the boiler from power
surges.
 If there is a power failure in cold weather areas, the freeze prevention
system in the boiler will not operate and may result in freezing of the heat
exchanger. In cold weather areas where power failures are common,
you must completely drain the boiler to prevent damage if the power is
expected to be off for any extended period of time. A battery back-up
(available at most computer retailers) may be used to supply hot water
during periods of power outages. Damage caused by freezing is not
covered under warranty.
Singular Combi Boiler - BTC 439003301 B (2021/07)
Installation Instructions
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