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Separate Indirect DHW signal from Taco SR503
I have a new Lennox gas fired boiler installed recently. An HTP indirect Hot water tank was installed at the same time. There are two zones and the third DHW priority zone and they are all controlled by the Taco SR503 relay. The boiler comes with a Hydrolevel Hydrostat 3000 controller, which has smart Economy setting that can reduce the boiler high limit based on some built in algorithms. It also provides a bypass feature to allow bypassing the Economy setting if the DHW calls the heat. In order to trigger the bypass it needs a separate signal fed from the Indirect DHW. My DHW has already been connected to SR503 priority zone and the contractor didn’t wire the separate signal to the Hydrostat control. As a result, my DHW heat call is treated as a regular zone heat call and runs at a lower temperature. May I know in this case what is the best solution to add the separate DHW signal to the Hydrostat? I read something about adding a relay but not sure what kind of relay and how should it be wired.
I am really new to all these. I have been reading posts in this great forum but unfortunately wasn’t able to find a lot information about Hydrolevel.
Many thanks in advance.