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CALEFFI

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Adjustable Thermostatic Mixing Valve for Solar Systems

INSTALLATION AND COMMISSIONING MANUAL

ASSE 1017

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Installation Tip

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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 speci cally certi ed 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 di erence between hot water inlet and

mixed water outlet for optimum performance:

· Min. ow rate to ensure stable temperature: 1.3 gpm (5 lpm)

· Certi ed to:

· Lead Plumbing Law Compliance:

· Lead Plumbing Law Certi ed by ICC-ES, le MPG-1360.

2521 Series

(<0.25% Lead content), chrome plated

85–150°F (30–65°C)

(0.25% Max. weighted

average lead content)

28114.02

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