Key Benefits Equal Percentage Flow: Provides predictable control and prevents system hunting by normalizing heat exchanger output

You must match the Lennox limit switch temperature rating exactly

providing stable high-limit safety

How much clearance is required for installation

making it an ideal choice for restoring HVAC system performance in older units

McDonnell & Miller RS-1-LP Sensor Probe 30067439-890 Key Benefits Equal Percentage Flow:The McDonnell & Miller RS 1 LP sensor probe (part number 176203) is a specialized single level low pressure remote sensor engineered for precise liquid level detection in commercial and industrial hydronic systems. Designed for integration with low water cut off (LWCO) controllers, this unit features a durable 3 4 inch NPT tank connection, ensuring a leak proof seal within pressurized vessels. The low pressure probe sensor is optimized for