Enhanced Thermal Management: The Nema 1 enclosure features integrated fan cooling to maintain internal component integrity under high-load conditions

Common Questions Is this kit compatible with both AC and DC solenoid configurations

the flow must follow the arrow marked on the forged body for correct modulation and to avoid water hammer

such as flame sensing

Technicians can usually jump the "Test" pins to force a manual defrost cycle

Lochinvar & A.O. Smith 100166241 Pressure Switch 320734-701 Enhanced Thermal Management: The NemaThe Lochinvar and A. O. Smith 100166241 Pressure Switch is a critical safety component designed for precise combustion air monitoring in high efficiency water heaters and boilers. This SPDT (Single Pole Double Throw) switch is factory calibrated to a . 21" WC (water column) set point, ensuring the inducer fan generates sufficient static pressure before allowing the ignition sequence to proceed. Engineered as a direct OEM replacement part, it replaces