Low Lead High Flow Thermostatic Mixing Valves
5231 Series
NA10341.02
www.caleffi.com
© Copyright 2015 Caleffi
ASSE 1017
Installation, commissioning and service instructions
Function
ASSE 1017 model 5231 series high flow thermostatic mixing valves are
designed to be installed at the hot water heater (point of distribution) and
cannot be used for tempering water temperature at fixtures as a point-of-use
valve. They are not designed to provide scald protection and should not
be used where ASSE 1070 devices are required. Series 5231 thermostatic
mixing valves can also be used for regulating the flow temperature in radiant
panel heating systems, to which it assures a constant and accurate control
with ease of installation.
Product range
5231 series thermostatic mixing valve. Union thread NPT male and
union sweat connections, sizes 1", 1 ¼", 1 ½", 2". Inlet port check valve
assemblies available separately for field installation.
Technical characteristics
Materials: - body:
DZR low-lead brass
- shutter:
brass
- springs:
stainless steel
- seals:
EPDM
- check valve extension (field installed):
stainless steel
Suitable fluids:
water
Max. percentage of glycol:
30% glycol solution
Setting range:
see table on page 2
Temperature stability:
±3°F (±2°C)
Max. working pressure (static):
200 psi (14 bar)
Max. working pressure (dynamic):
75 psi (5 bar)
Hot water inlet temperature range:
120–195°F (49–91°C)
Cold water inlet temperature range:
39–80°F (3.9–26.6°C)
Mixed temperature range:
95–150°F (32–66°C)
Max. inlet pressure ratio (H/C or C/H) for optimum performance:
2:1
Min. temperature difference between hot water
inlet and mixed water outlet for optimum performance:
20°F (11°C)
Max. water hardness:
10 grains
Certified to:
1. cUPC listed to ASSE 1017/CSA B125.3 Reduction of Lead in
Drinking Water Act Compliant: 0.25% Max. weighted average
lead content. Certifed by IAPMO R&T.
2. Meets requirements of ANSI/NSF 372 - 2011.
