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Weil-McLain GV4 Series 2 Boiler Control for Wirsbo Hydronic Floor Heat
Looking for a better way to control a Weil-McLain GV4 Series 2 boiler being used for domestic hot water via a W-M Gold Combo 30 Indirect-fired water heater & supplying hot water for a 3 zone hydronic system. Two zones are Wirsbo in floor tubing heat T86H tstats controlling MVAs on the loops which in turn control 2 circulators through Argo relays. The other zone has some baseboard (upstairs, rarely used) & a "Modine Style" hanging heater in the garage through an Argo relay to control the circulator. The WH 3 way valve is direct wired through the wiring harness on the W-M boiler. The boiler is controlled by a UT 1013-200 control module (just installed to replace the defective 1013-100). Now the boiler is wired so the boiler Grundfos circulator runs constantly & the burner cycles on the water temp limit switch. The temp limit switch has a fixed 30 degree F. differential. Is there a better/more economical way to operate this boiler?