Install Instructions

ManualsBrandsCaleffi ManualsHeating Supplies1" Sweat Union AngleMix 3-Way Thermostatic Mixing Valve w/ Gauge

Function

The Calefﬁ AngleMix

™

520 series thermostatic mixing valve is used

in systems producing domestic hot water and easily mounts to the

top of water heaters. The mixed temperature outlet is inline with

the hot water inlet, facilitating trouble-free connection and reducing

space required for installation. The AngleMix maintains the desired

output temperature of the mixed water supplied at a constant set

value compensating for both temperature and pressure ﬂuctuations

of the incoming hot and cold water. The mixing valve closes both

inlet ports tight, eliminating temperature creep in recirculation loops.

Also available as body only, for a wide variety of separately-ordered

end connections, the angle style body design offers improved ﬂuid

dynamics for better performance and reduces installation labor and

materials, eliminating a piping elbow in typical installations.

The valve complies with NSF/ANSI 372, low lead, as certiﬁed by

ICC-ES. Complies with ASSE 1017, CSA B125.3, UPC, IPC, Low

Lead Laws and listed by ICC-ES for use in accordance with the U.S.

and Canadian plumbing codes.

AngleMix™ Thermostatic mixing valve

520 Series

NA10618.02

www.caleffi.com

Product range

520___A series: Adjustable three-way thermostatic mixing valve with mixed outlet temperature gauge

and angle body................................ connections ½", ¾”, 1" press, NPT male & sweat union

520___AC series: Adjustable three-way thermostatic mixing valve with mixed outlet temperature gauge,

angle body with inlet port check valves........................................................................................

connections ½”, ¾”, 1” press* , NPT male & sweat union

5200x1A: Adjustable three-way thermostatic mixing valve, angle style body only for ﬁeld installed

connection fittings and temperature gauge, order separately.....................................

connections 1” & 1¼” male union

*½” press with inlet port check valves not available.

Summary of content (12 pages)

PAGE 1
NA10618.02 www.caleffi.com AngleMix™ Thermostatic mixing valve 520 Series © Copyright 2021 Caleffi Function The Caleffi AngleMix™ 520 series thermostatic mixing valve is used in systems producing domestic hot water and easily mounts to the top of water heaters. The mixed temperature outlet is inline with the hot water inlet, facilitating trouble-free connection and reducing space required for installation.
PAGE 2
Technical specification Materials -Valve body: DZR low-lead brass -Shutter, seats and slide guides: PSU -Springs: stainless steel -Seals: EPDM -Adjustment knob: ABS Performance Suitable fluids: Setting range: Tolerance: water 95–150° F (35–65° C) ±3° F (±2° C) Certifications: 1. ASSE 1017/CSA B125.3, UPC, IPC, Low Lead Laws and listed by ICC-ES for use in accordance with the U.S. and Canadian plumbing codes. certified by ICC-ES, file PMG-1357. 2.
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SAFETY INSTRUCTION This safety alert symbol will be used in this manual to draw attention to safety related instructions. When used, the safety symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN A SAFETY HAZARD. WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
PAGE 4
CONSIGNE DE SÉCURITÉ Ce symbole d'avertissement servira dans ce manuel à attirer l'attention sur la sécurité concernant instructions. Lorsqu'il est utilisé, ce symbole signifie. ATTENTION! DEVENEZ ALERTE ! VOTRE SÉCURITÉ EST EN JEU ! NE PAS SUIVRE CES INSTRUCTIONS PEUT PROVOQUER UN RISQUE DE SECURITE. AVERTISSEMENT: Ce produit peut vous exposer à des produits chimiques comme le plomb, qui est connu dans l’État de Californie pour causer le cancer, dommages à la naissance ou autre.
PAGE 5
Operating principle MIXED The thermostatic mixing valve mixes the hot and cold water at the inlets to maintain constant mixed water at the desired set temperature. A thermostatic sensor (1) is fully immersed in the mixed water outlet passage (2) which, as it expands or contracts, continuously establishes the correct proportion of hot and cold water entering the valve. The regulation of these flows is by means of a piston (3) sliding in a cylinder between the hot and cold water passages.
PAGE 6
Use Caleffi AngleMix 520 series thermostatic mixing valves are designed to be installed at the point of distribution to control the temperature of the domestic hot water distributed in the downstream network. The 520 series valve cannot be used for tempering water temperature at fixtures as a point-of-use valve. They are not designed to provide scald protection or chill protection service. They should not be used where ASSE 1070 devices are required.
PAGE 7
Installation Before installing a Caleffi AngleMix 520 series three-way thermostatic mixing valve, the system must be inspected to ensure that its operating conditions are within the range of the mixing valve, checking, for example, the supply temperature, supply pressure, etc. Systems where the 520 series thermostatic mixing valve will be installed must be drained and cleaned out to remove any dirt or debris which may have accumulated during installation.
PAGE 8
Dimensions A 1” check valve configuration MIX 90 D 70 110 130 150 ºF 170 190 50 30 210 Lay length PLUG COLD A C E’ HOT A E B 8
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Code 520410A A B C D E E' LL* Wt. (lb.) ½" NPT male 4¼" 8½" 4¾" 1.7 520410AC** ½” NPT male 4¼" 8½" 4¾" 1.8 520416A ½” press 3¾" 79⁄16" 4¼" 520419A ½" sweat 3 ⁄16” 1 6 ⁄8" 3¼" 1.7 520419AC** ½” sweat 4 ⁄16" 6¾" 3 ⁄16" 1.8 ⁄4" NPT male 3 ⁄16" 5 7 ⁄8" 4¼" ⁄4” NPT male 43⁄16" 83⁄8" 45⁄8" ⁄4" press 4" 8" 4½” 59⁄16” 2.8 ⁄4" press 5½” 9½” 4½” 7” 2.
PAGE 10
Commissioning The Caleffi AngleMix 520 series thermostatic mixing valve must be commissioned in accordance with current standards by qualified personnel using temperature measuring equipment. Caleffi AngleMix 520 series come standard with an integral outlet port temperature gauge which provides a time-saving temperature setting process to get close to the desired temperature. Use of a digital thermometer is recommended for confirming the final setting of the mixed water temperature.
PAGE 11
Application diagrams Ball valve SYSTEM WITHOUT RECIRCULATION Ball valve with check valve Temperature gauge Pump Expansion vessel T Thermostat Temperature/pressure safety relief valve Safety relief valve Pressure reducing valve MAIN WATER SUPPLY Y-strainer SYSTEM WITH RECIRCULATION, NO TANK CONNECTION MAIN WATER SUPPLY SYSTEM WITH RECIRCULATION, TANK CONNECTION T MAIN WATER SUPPLY 11
PAGE 12
Troubleshooting Under normal operating conditions the Caleffi AngleMix 520 series thermostatic mixing valve will provide a very high level of performance. However, in some circumstances, where the following maintenance schedule is not followed problems may arise. Recommended maintenance schedule: Tests should be conducted regularly to monitor the thermostatic mixing valve performance, as deterioration of performance could indicate that the valve and/or the system require maintenance.