Hi guys. I'm new to my house and coal boiler. My boiler mate is hooked directly to the oil boiler feed and return without a zone valve but there is a check valve. Wiring wise from oil boiler to digital control of amtrol I have a wire from l1 and ZR plus neutral. From amtrol control it goes to a circ pump. I'm thinking that the circ pump between the coil boiler and oil boiler is also pushing hot water through boilermate and making adjustments impossisble? I've recently installed the coal boile…
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