Carrier HK02ZB022 Pressure Switch 321894-708 the 700-504 is a millivolt
Yard notes & kiln story
Description
Carrier HK02ZB022 Pressure Switch 321894 708 the 700 504 is a millivolt the 700 504 is a millivolt system specifically designed to be powered by a 750mV thermopile (pilot generator) Key Benefits for Technicians: Precision Modulation: Engineered for high efficiency condensing boilers to ensure accurate air to gas ratios across the entire firing range