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75 PSI calibration for consistent safety circuit closure
ensure a minimum of 1/4" clearance between the probe and any metal grounding surface within the tank or pipe
Most HSI failures result from handling the element with bare hands (oils creating hot spots) or improper combustion air mixtures leading to excessive soot accumulation
Key Benefits Direct OEM Compatibility: Precisely replaces Lennox 31J3501 and 620 series assemblies for a perfect fit
Does this spring work for both Natural Gas and Propane
Bard HVAC 8403-090 Thermostat R-410A 75 PSI calibration for consistentThe Bard 8403 090 is a heavy duty, 24V programmable thermostat engineered specifically for multi stage HVAC systems. As a 3HT 2CL T6 Pro model, it provides precise control for up to three stages of heating and two stages of cooling, making it essential for complex wall mount heat pump and air conditioner setups. This unit serves as the direct replacement for 8403 058 and 8403 059, ensuring a seamless retrofit without the need for extensive wiring
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