CALEFFI 252169A Installation And Commissioning Manual

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FunctionThe thermostatic mixer is used in solar thermal systemsproducing domestic hot water. Its function is to maintain thetemperature of the mixed water supplied to the user constant atthe set value when there are variations in the supply conditionsof the incoming hot and cold water. This particular series ofmixing valves can function continuously at the hightemperatures of incoming hot water from the solar storage tank.The valve has been specifically certified to ASSE 1017.Product rangeSeries 2521 thermostatic mixing valve. Union thread NPT maleconnections, sizes 1/2”, 3/4”,1”; union solder connection, size1/2”, 3/4”, 1”.Technical Characteristics· Materials: - Body: Low-lead brass(<0.25% Lead content), chrome plated- Shutter: PSU- Springs: Stainless steel- Seals: EPDM· Setting range: 85–150°F (30–65°C)· Accuracy: ±3°F (±2°C)· Max working pressure (static): 200 psi (14 Bar)· Max working pressure (dynamic): 75 psi (5 bar)· Min working pressure (dynamic): 3 psi (0.2 bar)· Max hot water inlet temperature: 212°F (100°C)· Maximum inlet pressure ratio (H/C or C/H): 2:1· Minimum temperature difference between hot water inlet andmixed water outlet for optimum performance: 30°F (15°C)· Min. flow rate to ensure stable temperature: 1.3 gpm (5 lpm)· Certified to: ASSE 1017· Lead Plumbing Law Compliance: (0.25% Max. weightedaverage lead content)· Lead Plumbing Law Certified by ICC-ES, file MPG-1360.Adjustable Thermostatic Mixing Valve for Solar Systems2521 Series28114.02INSTALLATION AND COMMISSIONING MANUALASSE 1017© Copyright 2018 Calef fiwww.caleffi.comCALEFFI·Installation TipScan to view 2521 Solar Mixing Valve