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Lennox 59W40 Proving Switch 321702-401 For technicians troubleshooting hydronic mixing

SKU 56095961157
4.5
USD39.77 USD66.77

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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 3 - Sep 8

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Description

For technicians troubleshooting hydronic mixing control issues

High Flow Rates: Delivers a flow capacity up to 24

When you're troubleshooting a call where the Heil furnace blower motor won't engage or is staying energized way past the cycle

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The Sterling 11J38R06891-003 Ignitor is a heavy-duty OEM replacement spark igniter engineered specifically for technical compatibility with gas-fired unit heaters

Lennox 59W40 Proving Switch 321702-401 For technicians troubleshooting hydronic mixingThe Lennox 59W40 Blower Proving Switch is a critical safety component designed for specific Lennox furnace models and air handling units. This negative pressure switch is calibrated to a precise . 15" WC setpoint, ensuring the inducer motor or blower assembly is generating sufficient draft before allowing the ignition sequence to proceed. As a genuine Lennox replacement part, the 59W40 ensures seamless integration with the existing control board

Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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