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Use the dual breaker method -- whoever wrote the manual needs a Code-slap with 424.22(B), as the single breaker method doesn't comply with it. (B) Resistance Elements. Resistance-type heating elements in electric space-heating equipment shall be protected at not more than 60 amperes. Equipment rated more than 48 amperes and employing such elements shall ...


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I would price out the difference for the wire. Then consider the dual method uses 4 breaker slots and the single method only uses 2. So, if you have the extra space in your panel and the dual method is cheaper for the wire. Then that is your answer. Otherwise, the single method is simpler and saves two breaker slots. I have a heat pump that uses a 40 amp ...


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When the boiler is not heating, no gas is flowing, and you will measure the static input pressure of the gas supply line. The input pressure at the boiler drops when the boiler calls for heat because the gas is flowing during heating, and pressure drops occur in the gas piping upstream from your boiler due to the gas flow. Without knowing the flowing gas ...



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