I have a Intertherm Model,MMHB 090ABHR-01 furnace.The Ignition control is a UT 626421.I want to upgrade the silicone carbide ignitor to nitrate.I do understand that because nitrate is much denser then carbide.They will not sense for flame requiring the addition of a flame rod.Does the 626421 have provision for adding a flame rod?If not.Is there a compatiable replacement for the 626421 that does. Thanks.
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Upgrading my HSI to Nitrate.
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