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System Protection: Integrated Cold Weather Cut Off prevents system operation when ambient temperatures drop below effective heating thresholds
making it the preferred solution for installations where the radiator or convector is enclosed or located in a way that prevents accurate ambient air temperature sensing at the valve head
and Payne heating systems without the need for field modifications
meeting strict safety codes for pressure vessel protection
an HV-rated safety relief valve is required
Browning 2TB66 Sheave 320819-301 System Protection: Integrated Cold WeatherThe Browning 2TB66 Sheave is a precision machined heavy duty cast iron pulley designed for high torque power transmission in HVACR and industrial blower applications. This dual groove TB gripbelt sheave features a 6. 95 inch outside diameter and is engineered for use with P1 Series Bushings, providing a secure, split taper interface that minimizes shaft slippage. Optimized for versatility, the 2TB66 is compatible with A, AX, B, and BX cross section V
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