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provided the internal metering components are properly sized by the technician
The adjustment is made by loosening the linkage pin and sliding it along the slotted arm to your required radius between 1" and 2-3/4" before tightening
The valve is field-convertible by removing the cap from the bottom bypass port (Port III)
) setting and check the resistance across the pins
Carrier 52CQ500394 Replacement Knob L99H008 provided the internal metering componentsThe Carrier 52CQ500394 Replacement Knob is a critical OEM component designed for precise HVAC control interface restoration in specific Carrier and Bryant PTAC or window units. This heavy duty PTAC selector knob allows technicians to restore full functional control over fan speeds and temperature settings, ensuring the internal switch assembly is not compromised by stripped or cracked plastic interfaces. Engineered as a direct OEM replacement part,
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