Multiple boiler systems are made up ot two or more gas or oil-fired residential hot water boilers with the same total BTU output as one large commercial boiler.

By sequencing each boiler in a multiple system to fire only when necessary, thermal and standby losses are reduced and seasonal operating efficiency is increased. In addition, individual boilers may be isolated from the system if service is required, and additional boilers may be added if heating requirements increase.

• High efficiency-systems available to 87% AFUE • Easy-Fit Piping System assures equal return water temperature to each boiler for maximum steady-state efficiency and optimum system water temperature control • Water flows only through operative boiler, minimizing thermal and standby losses • Weil-McLain Easy-Fit Manifolds simplify supply and return piping - eliminate the need to connect each boiler to the main. • System provides for redundancy (standby security) and is easier to service because of manual isolation valves.

Energy Management Control Systems

Weil-McLain offers a number of easy-to-understand, easy-to-install Energy Management Control Systems (EMCS) for multiple boiler applications. The controls assure proper boiler sequencing and maximize the benefits of multiple boiler system. EMCS control panels reduce wiring time and installation costs, assure proper operation, and control cycling for optimum efficiency.