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the M322A01 is the direct
Automatic Reset Functionality: Eliminates the need for manual intervention once the plenum temperature returns to the safe closing point of 100°F
or a failing inducer motor that cannot pull the required vacuum
0917" orifice
Vibration Stability: High resistance to mechanical shock and vibration makes it ideal for direct mounting on high-output compressors
Laars Heating Systems 2400-228 Pressure Switch Freon the M322A01 is the directThe Laars Heating Systems 2400 228 Pressure Switch is a critical safety component designed for precise draft monitoring and combustion air verification in high efficiency hydronic systems. This OEM replacement part, also identified as the Pressure Switch Mark II, is engineered specifically for compatibility with Laars Mark II H Series residential and commercial boilers, including models H, HW, and HP (sizes 60 130). As a normally open switch, it