Viessmann B1KE Combi Series Installation And Service Instructions Manual page 28

Installation
Electrical Connections
28
(continued)
Vitodens 100-W, B1HE/B1KE Combi Installation/Service
The Vitodens 100-W comes with a pre-installed convience
plug for the boiler power supply, if required this convience
plug can be removed in the junction box for field wiring of
the boiler power supply requirements:
120VAC/60Hz/12A
Refer to the wiring diagram on page 97.
WARNING
Incorrectly executed electrical installations can result
in injuries from electrical current and in damage to the
boiler.
WARNING
The control must be grounded.
Ensure that 'L', 'N' and 'G' are not interchanged.
IMPORTANT
Electrical installations must comply with the latest edition of:
In the U.S.A., the National Electrical Code (NEC),
ANSI/NFPA 70 and any other state, local codes and/or
regulations.
In Canada, the Canadian Electrical Code (CEC),
CSA C22.1 Part 1 and any other province, territory,
local codes and/or regulations.