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in place on an oil fired boiler is a L8124C aq controller and all the relays are honeywell RA89A.One of the 89A relays are wired to the L8124 on the TT and the CC terminals !!!! This boiler will only go to high temp when that zone is calling for heat
I'm not sure if the 89A can stay in place? Can't find any wiring diagram with the L8124 and a 89A. All diagrams are showing a RA845. This installation does have a indirect storage tank for DHW.
The ZC and ZR terminals are not connected.
I may have to just add a taco 505 relay and do away with all the 89A relays
Anyone got any ideas???
Thanks in advance, Duff