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I am replacing my HM30propane boiler with an Electro electric boiler. The control inputs for the Electro are "R" and "W"., while there are four inputs for the HM30, "24VAC", "AM30", "C" and "lotemp&q

Post created: 2012-11-28 Type of Equipment: Boiler Views: 76

This question was created on the page: https://www.furnacecompare.com/furnaces/lennox/hm30.html.

There are four control wires going to the lennox, 24VAC, AM30, C, lotemp. I am replacing it with an Electro EB-MO-20, which only has two inputs, R and W. I understand the Electro has it's own 24VAC supply, so I will use an isolation relay, which of the Lennox wires do I connect?

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