CALEFFI 523160A Installation, Commissioning And Service Instructions

Also see for 523160A: Installation and commissioning manual

Contents

Principle of OperationA thermostatic mixing valve mixes hot and cold water in such a way as to maintain a constant settemperature of the mixed water at the outlet. A thermostatic element is fully immersed into the mixedwater. It then contracts or expands causing movement of the piston, closing either the hot or coldinlets, regulating the flow rates entering the valve.If there are variations of temperature or pressure at the inlets, the internal element automatically reactsattempting to restore the original temperature setting.ThermalShutoffThe Caleffi 5231 seriesmixing valves require aminimum temperaturedifferential from hot inletto mixed water outlet of20°F (11°C) to ensurethe correct operation,and maximum pressuredifference between thehot and cold inlet partsno greater than 2:1 ratio.Softened water use ishighly recommended asthe warranty is voidedif used on water withhardness greater than10 grains.Recommendedflow rates fortemperature stability:Flow curves1 ¼"1 ½"2"4.48.84070Min. Max.(gpm) (gpm)100.110.20.30.52050∆p (psi)G(l/min) (gpm)10235200.110.20.30.5(psi) (bar)10235201025200.010.10.020.030.051.00.20.30.540.4 0.440.040.4501001002001” 523060A523068A1" 77.61314.2Cv1-1/4” 1-1/2” 2”HOTMIXEDCOLD.10.232.30.460.691.15.31∆p (ft of head)G(l/s) (gpm)234.66.911.5460.110.20.30.5(psi) (bar)10235201025200.010.10.020.030.051.00.20.30.59.20.92 0.440.040.4501001.53.251” 1 1/2” 2”1 1/4” ∆p501606102.05.0115172 75Flow should never exceed standards for pipe size and material.