it requires a minimum differential pressure of 5 PSI to open and close effectively

This 135F switch is identified by a silver button and a red dot on the surface

the integrated fuse is internal and not field-replaceable to ensure the integrity of the Class 2 safety rating

this switch will open and lock out the ignition control to prevent dangerous conditions like incomplete combustion or CO leakage

this unit ensures seamless integration into complex HVACR staging and universal control systems

Bard HVAC MC4002-BC Controller 326070-701 it requires a minimum differentialThe Bard HVAC MC4002 BC Controller is an advanced solid state dual unit lead lag controller engineered to manage and rotate two independent wall mount HVAC units. This specific MC4002 BC model comes factory equipped with the enhanced alarm board and Ethernet communication board, providing comprehensive remote monitoring via SNMP Traps and IPv6. Designed for mission critical applications like telecom shelters and equipment rooms, it supports up to 4