Function
The thermostatic mixer is used in solar thermal systems
producing domestic hot water. Its function is to maintain the
temperature of the mixed water supplied to the user constant at
the set value when there are variations in the supply conditions
of the incoming hot and cold water. This particular series of
mixing
valves
can
function
continuously
at
the
high
temperatures of incoming hot water from the solar storage tank.
The valve has been specifically certified to ASSE 1017.
Product range
Series 2521 thermostatic mixing valve. Union thread NPT male
connections, sizes 1/2”, 3/4”,1”; union solder connection, size
1/2”, 3/4”, 1”.
Technical Characteristics
· Materials: - Body:
Low
‐
lead brass
(<0.25% Lead content), chrome plated
- Shutter:
PSU
- Springs:
Stainless steel
- Seals:
EPDM
· Setting range:
85–150°F (30–65°C)
· Accuracy:
±3°F (±2°C)
· Max working pressure (static):
200 psi (14 Bar)
· Max working pressure (dynamic):
75 psi (5 bar)
· Min working pressure (dynamic):
3 psi (0.2 bar)
· Max hot water inlet temperature:
212°F (100°C)
· Maximum inlet pressure ratio (H/C or C/H):
2:1
· Minimum temperature difference between hot water inlet and
mixed water outlet for optimum performance:
30°F (15°C)
· Min. flow rate to ensure stable temperature:
1.3 gpm (5 lpm)
· Certified to:
ASSE 1017
· Lead Plumbing Law Compliance:
(0.25% Max. weighted
average lead content)
· Lead Plumbing Law Certified by IAPMO R&T
Adjustable Thermostatic Mixing Valve for Solar Systems
2521 Series
28114.01
Installation, commissioning and servicing instructions
ASSE 1017
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www.caleffi.com
CALEFFI
