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Proper wiring of MC-80 Hydronic System
I have an HTP MC-80 which has supplied my house heat/hot water for 9 years.
My plumber was over and recommended that I wire it properly...
I have no idea what would go where.
It's been set to just make 170 degrees it's whole life.
Has a passive hot water tank with a probe (probe wire is not attached to anything). The main pump is always circulating the 170 thru the passive water tank (loop I guess?). This pump is wired into the CH P1. It turns off only when the boiler power is turned off completely.
There is a thermostat in my basement that is not wired to anything. The basement is radiant heat and has a mixing valve set to 20 degrees and it's own pump that is on continuously.
Pics of what I have going on...
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