Submittal Sheet

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

CALEFFI

003

FM 21654

Replaces 011266/21 NA

AngleMix™

Angle-style thermostatic mixing valve

520 series

01266/21.01 NA

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 also features a thermal shut-off function

that operates in the event of a cold water supply failure at the inlet.

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, IRC, NPC

Low Lead Laws and listed by ICC-ES for use in accordance with the

U.S. and Canadian plumbing codes.

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

Technical specications

Materials

- Valve body: DZR low-lead brass

- Shutter, seats and slide guides: PSU

- Springs: stainless steel

- Seals: peroxide-cured EPDM

- Adjustment knob ABS

Performance

Suitable ﬂuids: water

Setting range: 95–150° F (35–65° C)

Tolerance: ±3° F (±2° C)

Max. working pressure (static): 150 psi (10 bar)

Max. working pressure (dynamic): 75 psi (5 bar)

Max. hot water inlet temperature: 195° F (90° C)

Max. inlet pressure ratio (H/C or C/H) for optimal performance: 2:1

Minimum temperature difference between

hot water inlet and mixed water outlet

for optimal performance: 18° F (10° C)

Min. ﬂow to ensure optimal performance:

sizes ½ & ¾ inch: 0.5 gpm (2 L/min)

size 1 inch: 1.0 gpm (3.8 L/min)

Max. ﬂow for temperature stability:

sizes ½ & ¾ inch: 9 gpm (34 L/min)

size 1 inch: 16 gpm (60 L/min)

Mixed outlet temperature gauge: 2" diameter

Scale from 30° F to 210° F

Certifications

1. ASSE 1017/CSA B125.3, UPC, IPC, IRC, NPC 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. Complies with NSF/ANSI 372 –2016, Drinking Water System

Components–Lead Content Reduction of Lead in Drinking

Water Act, California Health and Safety Code 116875S.3874,

Reduction of Lead in Drinking Water Act, Vermont Act 193

The Lead in plumbing Supplies Law, Maryland’s Lead Free

Law HB. 372 Law, as certified by ICC-ES, file PMG-1360.

Connections

- sweat union: ½", ¾", 1"

- press union: ½", ¾", 1"

- NPT male union: ½", ¾", 1"

Summary of content (6 pages)

PAGE 1
AngleMix™ Angle-style thermostatic mixing valve 520 series CALEFFI 01266/21.01 NA FM 21654 003 Replaces 011266/21 NA 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
Dimensions A 1” check valve configuration MIX 90 70 D 110 130 150 ºF 170 190 50 30 210 Lay length PLUG COLD A C E’ HOT A E B Code A B C D ½" NPT male 4¼" 8½" 4¾" 520410AC** ½” NPT male 4¼" 8½" 4¾" 520416A ½” press 3¾" 79⁄16" 4¼" 520419A ½" sweat 39⁄16” 61⁄8" 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 4 ⁄16" 3 8 ⁄8" 4 ⁄8" ⁄4" press 4" 8" 4½” 59⁄16” 2.8 ⁄4" press 5½” 9½” 4½” 7” 2.
PAGE 3
Legionella-scalding risk Temperature — exposure time 170 Total burning 160 150 Partial burning 140 130 Safety condition. Maximum exposure time at a given temperature 120 110 0.1 1 10 100 1,000 10,000 Seconds In systems producing domestic hot water with storage, in order to avoid the dangerous infection known as Legionella, the hot water must be stored at a temperature of at least 140° F.
PAGE 4
Body shape Installation The angle body configuration has improved fluid dynamics for better performance, and reduces installation labor and materials because the hot inlet port is in line with the mixed outlet port, eliminating a piping elbow as required for standard mixing valves. The cold inlet comes in the side.
PAGE 5
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
PAGE 6
Replacement parts Replacement body. Meets requirements of NSF/ANSI 3722011. Certified to: ASSE 1017/CSA B125.3, Low lead, by ICC-ES file PMG1360. End connection flexibility: ½", ¾" or 1" npt female or male, press, PEX barb or sweat with or without check valves, separately sourced for field installation. See Caleffi List Price catalog for fitting selection. 520051A...................1" male union thread, ½" & ¾" vavles. Cv=2.0 (Kv=1.7) 520061A..............................1" male union thread, 1" valve.