
j Select Circulator versus Zone Valve The flow of hot boiler water to the BOILER MATE™can be controlled with either a motorized zone valve or a circulator. 1. Zone valve (system flow of 4-8 gpm). If a zone valve is to be used, a minimum flow rate of 4 gpm with all zones in use is required with a maximum of 8 gpm with only the BOILER MATE™ in use. Be sure the zone valve chosen has a maximum pressure drop (Cv = 4) when fully opened. 2. Separate circulator. The recommended way to provide adequate f