CALEFFI TankMixer Combi 520 Series Manual

TankMixer™ Combi and TankMixer™ Compact Combi
Thermostatic mixing valve kits for combi boilers
© Copyright 2025 Caleffi
ASSE 1017
NSF/ANSI/CAN 372
Product range
TankMixer Combi
KIT52051_AX series kit:
Adjustable 3-way thermostatic mixing valve kit, with flexible pipe..................................
union system connections ¾" sweat, press, NPT male, PEX crimp and PEX expansion
TankMixer Compact Combi
KIT52051_AP series kit:
Adjustable 3-way thermostatic mixing valve kit, with pivot connectors...........................
All kits contain angle mixing valve body with cold water cross and ¾" NPT female connection to
water heater.
Function
The Caleffi TankMixer™ maintains the desired output temperature of
the mixed water supplied at a constant setpoint compensating for both
temperature and pressure fluctuations of the incoming hot and colder
water. In addition, it can be used to reduce legionella growth by allowing
the water heater thermostat to be set at 140 °F.
The TankMixer series combines the high-performing AngleMix™ three-
way point of distribution thermostatic mixing valve with a cold water
supply cross, which contains an integral check valve for the flow to the
mixing valve and ½" NPT female threaded recirculation tap, that can
plugged if not used. The AngleMix angle style mixing valve body design
offers improved fluid dynamics for better performance and reduces
installation labor and materials, eliminating a piping elbow in typical
installations. The AngleMix also features a thermal shut-off function that
operates in the event of a cold water supply failure at the inlet.
The TankMixer™ Combi features a flexible pipe for easy installation
directly on a typical wall-hung gas or electric fired water heater or combi
boiler. In addition, hot and cold water isolation and service 3-way ball
valves are included offering convenient servicing and flushing ports, and
integral pressure relief valve.
The TankMixer™ Compact Combi provides a pivoting brass connector
for easy installation directly on typical combi boilers. It has unique ¾"
pivot connectors that adapt to heater nipples spaced from 3" to 8"
on-center. It also provides service ball valves with flushing ports and
integral pressure relief valve.
The TankMixer thermostatic mixing valve kits have been certified to
ASSE 1017, CSA B125.3 and US and Canadian plumbing codes. The
products also meet NSF/ANSI/CAN 372 for low lead and lead free
materials requirements for products in drinking water systems. Certified
and listed by ICC-ES. Service valves in the kit are certified to section
1417(d) of the Safe Drinking Water Act, The lead content requirements
of Section 116875 of the California Health & Safety Code and NSF/ANSI/
CAN 372 . Listed by IAPMO R&T.
union system connections ¾" sweat, press, and NPT male
1
NA11357
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520 Series