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Superstor45 not supply enough hot water

DeweyDewey Member Posts: 10

recently had a Honeywell L7224 aqua-stat installed. I also have an

indirect water heater installed and Argo ARM 3P Switching Relays With

Priority. My issue is that I am running out of hot water. I have my high

limit set to 190 and my low set to 170 with a differential of 10. My

boiler will not fire up until it goes below the low limit. I would of

expect the boiler to fire up as soon as I it notices that the hot water

heater is in use. I have the arm3p set with priority and wired to the zr

and zc terminals of the aquastat. I was unsure as with on of the

setting. Should the DUU setting be set to on or off. Also, with the

arm3p controller should the boiler turn on when immediately when it is

being called for hot water or should it wait until it hits the low temp


thanks in advance
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