York S1-025-41130-000 Wire Harness 321894-709 What systems use this 120-181

What systems use this 120-181 degree stat

designated propane orifices

Rugged 1-inch diameter stainless steel or alloy construction for long-term immersion in specialized HVAC oils

by measuring the DC microamps in series with the flame sensor wire during the ignition cycle to ensure compatibility for S1-031-09161-000 signal requirements

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