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the 52W76 achieves this by sensing suction line temperature via its bulb and adjusting the internal orifice in real-time
Thermal Efficiency: Features a high-efficiency 4-cell design for maximum heat absorption and distribution
this unit is designed to work efficiently with both HSI and direct spark systems that utilize remote flame sensing
and AHU protection
Watts 0121429 Valve 320720-756 the 52W76 achieves this byThe Watts 0121429 (Model LFLL40XL) is a heavy duty, 3 4 inch temperature and pressure relief valve designed specifically for commercial hot water heaters and supply tanks. Engineered with an extended shank, this valve is the industry standard for installations involving high density insulation, eliminating the need for additional extension nipples. The lead free cast copper silicon alloy construction ensures compliance with rigorous NSF ANSI 61
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