PeterW Posted May 2, 2018 Share Posted May 2, 2018 Ok - new ASHP has a pretty binary control system that essentially puts 24v across 2 terminals. It’s an IVT unit that has no indoor control box, just a plastic enclosure with a few DIN connectors and a transformer. The control box has a stat and a 230v connection acting as the switch to the 230/24v DIN transformer which then sends output to the ASHP. Now I’m not overly keen on this as I’m sure that constant switching of the transformer will do it no good, and would rather use a contactor or relay to switch the low power side. Am I being pendantic over this or should I just leave it be..?? Link to comment Share on other sites More sharing options...
Onoff Posted May 2, 2018 Share Posted May 2, 2018 Your contactor could weld itself on one day of course... The 24vdc psu will likely just pack up eventually with no ill effect. Link to comment Share on other sites More sharing options...
PeterW Posted May 2, 2018 Author Share Posted May 2, 2018 Ok so in that case then I just leave as is ... Link to comment Share on other sites More sharing options...
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