Lochinvar & A.O. Smith 100112660 Pressure Switch 319848-301 The Carrier HH11AZ070 Protectorelay is

The Carrier HH11AZ070 Protectorelay is a critical combustion safeguard designed for precision oil burner primary control within residential oil furnaces and HVAC systems

Ensure the capillary is protected from vibration and sharp bends to maintain the integrity of the thermal charge

ensuring matched electrical characteristics and mounting

verify that the 24V transformer is outputting the correct voltage to the control circuit

the Maxitrol R600-3/4-CSA is a low-pressure appliance regulator

Lochinvar & A.O. Smith 100112660 Pressure Switch 319848-301 The Carrier HH11AZ070 Protectorelay isThe Lochinvar & A. O. Smith 100112660 Pressure Switch is a critical safety component designed for high efficiency water heaters and boilers. This 0. 99" WC pressure switch ensures the inducer motor is moving sufficient air and generating the correct draft before the ignition sequence begins. Engineered to prevent hazardous conditions, it acts as a fail safe that locks out the burner if it detects venting blockages or blower failure. This genuine OEM