Characteristics A.O. Smith BMS-interface

A number of appliances in our gas-fired product range makes use of voltage-free contact for fault indication to the Building Management System. In order to further enhance our range, we recently introduced the BMS-interface. This interface can be combined with the latest generation of BFC, SGE and SGS. It converts the information from the installation to a ModBus protocol. This interface can monitor almost 50 parameters; temperatures in the appliance, burning hours, operating hours, etc.

Applicable to already installed water heaters

Do you already have a SGE, SGS or BFC installed and would you like to know of the BMS-interface can be connected to your system, please contact us.


Download the spec sheet here.

In the instruction manual you can find the list with specified parameters for the interface.
Download the instruction manual here.