Product Overview

Kv = 1.7
0.1
10
0.023
0.23
0.046
0.069
0.02 0.05 0.2 0.5
0.115
2.3
0.46
0.69
1.15
20 50
∆p (ft of head)
G (l/min) (
gpm
)
23
4.6
6.9
11.5
46
0.01
0.1
0.02
0.03
0.05
1
0.2
0.3
0.5
(psi) (bar)
10
2
3
5
20
1 0
.
1
0
.2
0.5 0
.05
10
2 5 2
0
0.001
0.01
0.002
0.003
0.005
0.1
0.02
0.03
0.05
1.0
0.2
0.3
0.5
Cv = 2.0
9.2
0.092
0.92
0.04
0.4
4
0.004
0.04
0.4
50
115
161
50
70
2.0
5.0
190
70
100 140
M
I
N
M
A
X
7
1
2
3
Index Point
Hydraulic Characteristics
Use
Caleffi AngleMix 520 series thermostatic mixing valves are designed
to be installed at the point of distribution to control the temperature of
the domestic hot water distributed in the downstream network. The
520 series valve cannot be used for tempering water temperature at
fixtures as a point-of-use valve. They are not designed to provide scald
protection or chill protection service. They should not be used where
ASSE 1070 devices are required. Wherever a scald protection feature is
required, Caleffi 5213 series high performance mixing valves need to be
installed. For safety reasons, it is advisable to limit the maximum mixed
water temperature to 120° F when anti-scald devices are not used at
each fixture.
Installation
Before installing a Caleffi AngleMix 520 series three-way thermostatic
mixing valve, the system must be inspected to ensure that its operating
conditions are within the range of the mixing valve, checking, for
example, the supply temperature, supply pressure, etc.
Systems where the 520 series thermostatic mixing valve will be installed
must be drained and cleaned out to remove any dirt or debris which may
have accumulated during installation.
The installation of appropriately sized filters at the inlet from the main
water supply is always advisable.
Caleffi AngleMix 520 series thermostatic mixing valves must be installed
by qualified personnel in accordance with the diagrams in this brochure,
taking into account all current applicable standards.
Caleffi AngleMix 520 series thermostatic mixing valves can be installed in
any position, either vertical or horizontal, or upside down.
The following are shown on the thermostatic mixing valve body:
- Hot water inlet, color red and marked “HOT”.
- Cold water inlet, color blue and marked “COLD”.
- Mixed water outlet, marked “MIX”.
Commissioning
The Caleffi AngleMix 520 series thermostatic mixing valve must be
commissioned in accordance with current standards by qualified
personnel using temperature measuring equipment. Caleffi 520516A,
520516AC, 520519A and 520519AC with integral outlet port temperature
gauge provide a time-saving temperature setting process to get close to
the desired temperature. Use of a digital thermometer is recommended
for confirming the final setting of the mixed water temperature. After
installation, the valve must be tested and commisioned in accordance
with instructions given below, taking into account current applicable
standards.
Temperature adjustment
The temperature is set to the required value by means of the knob with
the graduated scale, on the top of the valve.
Locking the setting
Position the handle to the number
required with respect to the index
point. Unscrew the head screw, pull
off the handle and reposition it so that
the handle fits into the internal slot of
the knob. Tighten the headscrew.
Pos. Min. 1 2 3 4 5 6 7 Max.
T (°F) 95 105 115 120 125 132 140 145 150
T (°C) 35 40 45 48 52 56 60 63 65
with: T
HOT
= 158°F (70°C), with: T
cold
= 59°F (15°C), P = 43 psi (3 bar)
Flow should never exceed standards for pipe size and materials.
Body shape
The angle body configuration has improved fluid dynamics for better
performance, and reduces installation labor and materials because the
hot inlet port is in line with the mixed outlet port, eliminating a piping
elbow as required for standard mixing valves. The cold inlet comes in
the side.