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Always locate your pressure tap points on the top side of the refrigerant lines to prevent oil and sediment from accumulating in the bellows
Is the 35K71 compatible with all Lennox residential heaters
we recommend verifying the cabinet model number to ensure no air bypass occurs
and 200 series ventilators
When you are out in the field servicing a Reznor unit heater
Trane CNT4820 Limit 322056-301 Always locate your pressure tapThe Trane CNT4820 is a specialized bi metal disc limit switch designed for critical thermal protection in heating and cooling systems. Engineered as a normally closed (N C) safety control, this SPST (Single Pole Single Throw) device features an auto reset (A R) function, ensuring the circuit automatically closes once temperatures return to a safe range below the 155F open temperature. As an HVAC high limit switch, the CNT4820 is built to handle the