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Thermal shutoff

In the event of a failure of either the hot or cold supply, the piston will shut off, stopping water 
discharging from the mixed water outlet. The Caleffi 

5213 series thermostatic mixing

 requires a 

minimum temperature differential from hot inlet to mixed water outlet of 18°F (10°C) to ensure the 
correct operation of the thermal shutoff feature.

COLD

HOT

MIXED

4

Sweat version

Operating principle

The thermostatic mixing valve mixes hot and cold water in such a way as to maintain constant set 
temperature of the the mixed water at the outlet. A thermostatic element is fully immersed into the 
mixed water. This element then contracts or expands causing movement of the piston, closing 
either the hot or cold inlets, regulating the flow rates entering the valve. If there are variations of 
temperature or pressure at the inlets, the internal element automatically reacts to restore the original 
temperature setting. In the event of a failure of either the hot or cold supply, the piston will shut off, 
stopping water discharging from the mixed water outlet. 

NPT version

COLD

HOT

MIXED

sweat connections

version

COLD

HOT

MIXED

connections

Compression version

PEX crimp version

Summary of Contents for 521352A

Page 1: ...ater inlet to ensure stable operation 9 F 5 C Minimum flow rate for stable operation 0 5 gpm 2 l min Certifications 1 ASSE 1070 CSA B125 3 2012 certified by ICC ES file PMG 1357 2 NSF ANSI 372 2011 Dr...

Page 2: ...at such temperatures do not endanger people Leave this manual for the user SAFETY INSTRUCTION This safety alert symbol will be used in this manual to draw attention to safety related instructions When...

Page 3: ...stpasinstall mis en service et entretenu correctement selon les instructions contenues dans ce manuel il peut ne pas fonctionner correctement et peut mettre en danger l utilisateur ATTENTION S assurer...

Page 4: ...way as to maintain constant set temperature of the the mixed water at the outlet A thermostatic element is fully immersed into the mixed water This element then contracts or expands causing movement o...

Page 5: ...ffi 5213 series is a thermostatic mixing valve suitable for single or multiple point of use applications in accordance with installation rules and indications specified in ASSE 1070 standards The syst...

Page 6: ...5 Thermostatic element 6 Flow conveyor 7 Lower spring 8 Valve body 9 Union washer quantity 3 per valve 10 Union nut quantity 3 per valve 11 Inlet port male tailpiece with integral check valve quantit...

Page 7: ...F0000520 NA20657C NA10485 1 NA20660 1 inch NPT male incl w tailpc 59817A NA20660C 59894A 1 NA20669 Sweat 59834A NA20669C 59906A 1 NA20667 PEX crimp F61008 C F0000521 NA20667C NA10486 1 1 C check valve...

Page 8: ...ation is designed and or installed all current legislation is noted e g the maximum distance from the outlet of the valve to any terminal fitting The connecting hot and cold water supplies must be con...

Page 9: ...lve Isolating valve Strainer check valve Strainer check valve T Pressure reducing valve if required Temperature limiting valve if required HOT SUPPLY COLD SUPPLY MIXED OUTLET MIX MIX HOT COLD MIX MIX...

Page 10: ...e 2 15 16 5 7 8 5 3 16 3 1 15 16 2 0 521347A PEX crimp 3 6 5 3 5 8 1 15 16 2 0 521357A PEX crimp 3 6 5 3 5 8 1 15 16 2 0 521367A 1 PEX crimp 3 1 16 6 1 8 5 9 16 3 11 16 1 15 16 2 0 521349A sweat 2 11...

Page 11: ...ign of the cap the temperature setting can be adjusted by removing the cap from the valve body and reversing the cap onto the temperature adjustment spindle Use the following sequence when commissioni...

Page 12: ...Temperature adjustment View of temperature adjustment Attaching temperature adjustment cap Temperature adjustment cap in place Locking adjustment spindle with locking nut 1 2 3 4 12...

Page 13: ...by unscrewing the inlet union nuts and carefully pulling apart the connecting piping 2 The built in check valves 11 on the Caleffi 5213 series valves can be accessed in a similar way to 1 to ensure fr...

Page 14: ...of the valve Restore inlet conditions within the limits of the valve Erratic flow of water from the valve a Insufficient water supplies b Fluctuations in supply pressure and or temperatures c Adverse...

Page 15: ...15 this page left blank intentionally...

Page 16: ...Caleffi North America Inc 3883 West Milwaukee Road Milwaukee WI 53208 T 414 238 2360 F 414 238 2366 4 30 18 16...

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