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the Hydrotherm 20-1014 Pressure & Temperature Gauge is an essential OEM replacement part for maintaining system integrity
This bypasses the standard timing and accelerates the internal clock
the Fenwal 35-705902-001 is the modern microprocessor upgrade for discontinued 05-13
Manual Override: Includes a manual lever for simplified system setup and troubleshooting
as long as the voltage and frame size match
Lennox 73W33 Pressure Switch 320735-701 the Hydrotherm 20-1014 Pressure &The Lennox 73W33 is a high precision dual stage pressure switch engineered for specific Lennox furnace models and air handlers. This OEM replacement pressure switch serves as a critical safety component, monitoring the pressure differential within the combustion blower. With setpoints calibrated at . 68 . 35 WC, it ensures proper venting and blower performance before allowing the ignition sequence to proceed. As a two stage pressure switch, it manages
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