IBC VX Series Installation & Operating Manual page 110

The following message is relevant to users in the USA:
Important
This Boiler is equipped with a feature that saves energy by reducing the boiler water
temperature as the heating load decreases. This feature is equipped with an override which
is provided primarily to permit the use of an external energy management system that
serves the same function. THIS OVERRIDE MUST NOT BE USED UNLESS AT LEAST
ONE OF THE FOLLOWING CONDITIONS IS TRUE: An external energy management
system is installed that reduces the boiler water temperature as the heating load decreases.
This boiler is not used for any space heating. This boiler is part of a modular or multiple
boiler system having a total input of 300,000 BTU/hr or greater. This boiler is equipped with
a tankless coil (not applicable to these boilers). US installers should contact IBC for any
further information required.