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Vitodens 100-W, B1HE/B1KE Combi Installation/Service
A low water cut-off may be required by local codes.
Do not install an isolation valve between boiler and low
water cut-off.
Follow the installation instructions of the low water
cut-off manufacturer.
For low water cut-off wiring information specific to your
application, refer to applicable wiring diagram on the
boiler front panel.
Note: The Vitodens 100-W boiler has a built-in flow
switch, which may be accepted by local codes
in lieu of a low water cut-off.
Boiler below radiation Boiler above radiation
LWCO
LWCO
Air Vent
Air Vent
Boiler with Low Water Cut-off (remote-mounted, field supplied)
Installation
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