CALEFFI 2521 Series Installation, Commissioning And Servicing Instructions

CALEFFI
www.c leffi.com
Adjustable Thermostatic Mixing Valve for Solar Systems
© opyright 2010 alef fi
Installation, commissioning and servicing instructions
ASSE 1017
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:
- Shutter:
- Springs:
- Seals:
· Setting range:
· Accuracy:
· Max working pressure (static):
· Max working pressure (dynamic):
· Min working pressure (dynamic):
· Max hot water inlet temperature:
· Maximum inlet pressure ratio (H/C or C/H):
· Minimum temperature difference between hot water inlet and
mixed water outlet for optimum performance:
· Min. flow rate to ensure stable temperature: 1.3 gpm (5 lpm)
· Certified to:
· Lead Plumbing Law Compliance:
· Lead Plumbing Law Certified by IAPMO R&T
2521 Series
(<0.25% Lead content), chrome plated
85–150°F (30–65°C)
(0.25% Max. weighted
average lead content)
28114.01
Low‐lead brass
PSU
Stainless steel
EPDM
±3°F (±2°C)
200 psi (14 Bar)
75 psi (5 bar)
3 psi (0.2 bar)
212°F (100°C)
2:1
30°F (15°C)
ASSE 1017