Product Overview

We reserve the right to change our products and their relevant technical data, contained in this publication, at any time and without prior notice.
Caleffi North America, Inc.
3883 W. Milwaukee Road
Milwaukee, WI 53208
Tel: [phone] · Fax: [phone]
[e-mail] · www.caleffi.com
© Copyright 2017 Caleffi North America, Inc.
M M
NON-
CONDENSING
BOILER
M M
SOLID
FUEL
BOILER
M M
NON-
CONDENSING
BOILER
NON-
CONDENSING
BOILER
ThermoProtec
™
280 series
Boiler protection thermostatic mixing valve. Connections 1" to 1-1/4" NPT male or sweat with union. Brass body. Brass lower body plug. PSU shutter.
Stainless steel spring. EPDM seal. Wax thermostatic sensor. Suitable for water and glycol solutions. Maximum percentage of glycol 50%. Maximum working
pressure 150 psi (10 bar). Working temperature range 40–212°F (5–100°C). Set point temperature 130°F (55°C) standard; 115°F(45°C); 140°F (60°C);
and160°F (70°C) optional. Sensor cartridge accuracy ±4°F (±2°C). Hot inlet from boiler complete closed temperature Tset +18°F (10°C).
SPECIFICATION SUMMARIES
System with buffer tank storage
Non-condensing boiler, connection to buffer tank storage in parallel
Use safety devices according to
local regulations
Use safety devices according to
local regulations
*Air purge recommended for boiler loop
*Air purge recommended for boiler loop
*
*