Lochinvar & A.O. Smith 100277815 Connection Board 326058-755 meaning it can remain energized

meaning it can remain energized for extended periods without the coil overheating

direct-acting pressure actuated water regulating valve engineered to maintain stable refrigerant head pressure in water-cooled condensers

This critical safety component features a 48-inch lead length

allowing the unit to automatically detect and adjust for input voltages between 120V and 277V without manual DIP switch or selector pin configuration

this 740 Series valve features an above-drain seat design and non-mechanical disc-to-metal alignment to prevent sticking

Lochinvar & A.O. Smith 100277815 Connection Board 326058-755 meaning it can remain energizedThe Lochinvar & A. O. Smith 100277815 Connection Board is a critical low voltage interface designed for precise communication between the Smart System control and external HVAC components. As a veteran grade low voltage connection board, it serves as the central hub for integrating 0 10 VDC BMS inputs, building alarm contacts, and multi unit cascade sequencing. This OEM boiler control board is engineered to handle signal routing for pump delays,