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The VM3221 modulating valve utilizes Erie PopTop technology
Integrating this Burnham boiler part helps optimize overall system efficiency and safeguards against potential operational hazards
ensuring code compliance with UL 2075 standards
the FS200 flow switch can be installed in vertical lines
Carrier HH19ZA170 Switch 30067439-890 The VM3221 modulating valve utilizesThe Carrier HH19ZA170 is a high limit HVAC temperature safety switch engineered for critical thermal protection in residential and commercial furnaces. As a genuine OEM replacement part, this 170 degree limit switch is calibrated to effectively interrupt the heating cycle if the internal plenum temperature reaches its thermal cutout threshold of 170F. The HH19ZA170 limit switch serves as a mandatory safeguard, preventing heat exchanger damage and
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