CALEFFI 521352A, 521342A, 5213 Series, 521362A, 521347A Installation And Commissioning Manual

www.caleffi.com

ASSE 1070

Scald Protection 3-Way Thermostatic Mixing Valve

38531.08

© Copyright 2018 Caleffi

Technical specifications
Materials:

- valve body and regulating spindle: low-lead brass (<0.25% lead content)

- Shutter, seat and slide guides: PPO

- Springs: stainless steel

- Seals: peroxide-cured EPDM

- cover: ABS
Temperature adjustment range: 85–120°F (29–50°C)

Temperature set: must be commissioned on site to achieve desired temperature
Temperature stability: ±3°F (±2°C)

Cold inlet temperature: Minimum 39°F (4°C); Maximum 85°F (29°C)
Hot inlet temperature: Minimum 120°F (49°C); Maximum 185°F (85°C)

Maximum operating differential pressure: Static: 150 psi (10 bar); Dynamic: 70 psi (5 bar)
Minimum operating differential pressure (dynamic): 1.5 psi (0.1 bar)

Maximum unbalanced dynamic supply (hot/cold or cold/hot): 6:1
Minimum temperature differential between hot water inlet

and mixed water outlet to ensure thermal shutoff function: 18°F (10°C)
Minimum temperature differential between mixed water outlet

and cold water inlet to ensure stable operation: 9°F (5°C)
Minimum flow rate for stable operation: 0.5 gpm (2 l/min)
Certifications:

1. ASSE 1070/CSA B125.3-2012, certified by ICC-ES, file PMG-1357.

2. NSF/ANSI 372-2011, Drinking Water Systems Components-Lead Content Reduction of Lead in
Drinking Water, California Health and Safety Code 116875 S.3874, Reduction of Lead in Drinking
Water Act, certified by ICC-ES, file PMG-1360.

5213 Series

INSTALLATION AND COMMISSIONING MANUAL

Function

Thermostatic mixing valves are used in applications where the user
must be protected from the danger of scalding caused by hot water.
The Caleffi 5213 series provides water at a safe and usable
temperature in situations where the control of the temperature of the
water discharging from a terminal fitting is of the utmost importance,
i.e. within hospitals, schools, nursing homes, etc. The valve is
designed to prevent the flow of water discharging from the mixed
water outlet in the event of the failure of hot or cold supply. The Caleffi
5213 series is a high performance combination thermostatic and
pressure balanced mixing valve and is ASSE 1070 listed (temperature
can not exceed 120°F). The valve is complete with check valve at
both hot and cold inlets. Certified to ASSE 1070 and Low Lead Plumbing

Law by ICC-ES.

Product range

5213 series scald protection three-way thermostatic mixing valve.
Union thread NPT male connections, sizes ½”, ¾”,1”; Union sweat connection, sizes ½”, ¾”, 1”;
Union PEX crimp connections, sizes ½”, ¾”, 1”; Compression union, size 3/8”.

1

SAFETY INSTRUCTION

This safety alert symbol will be used in this manual to draw attention to safety related instructions.
When used, the safety alert symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS

INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN A SAFETY
HAZARD.

WARNING: This product can expose you to chemicals including lead, which is known to the
State of California to cause cancer and birth defects or other reproductive harm. For more
information go to www.P65Warnings.ca.gov.

CAUTION: All work must be performed by qualified personnel trained in the
proper application, installation, and maintenance of systems in accordance
with all applicable codes and ordinances.

CAUTION: If the thermostatic mixing valve is not installed, commissioned and
maintained properly, according to the instructions contained in this
manual, it may not operate correctly and may endanger the user.

CAUTION: Make sure that all the connecting pipework is water tight.

CAUTION: When making the water connections, make sure that the

pipework connecting the thermostatic mixing valve is not mechanically
over-stressed. Over time this could cause breakages, with consequent
water losses which, in turn, could cause harm to property and/or people.

CAUTION: Water temperatures higher than 100°F can be dangerous. During
the installation, commissioning and maintenance of the thermostatic mixing
valve, take the necessary precautions to ensure that such temperatures do
not endanger people.

CAUTION: To prevent any damage which will cause the electronic mixing
valve to not operate correctly, treat highly aggressive water before entering the
thermostatic mixing valve.

Leave this manual for the user.

2

CONSIGNE DE SÉCURITÉ

Ce symbole d'avertissement servira dans ce manuel à attirer l'attention sur la sécurité concernant
instructions. Lorsqu'il est utilisé, ce symbole signifie.

ATTENTION! DEVENEZ ALERTE ! VOTRE SÉCURITÉ EST EN JEU ! NE PAS SUIVRE CES
INSTRUCTIONS PEUT PROVOQUER UN RISQUE DE SECURITE.

AVERTISSEMENT:

est connu dans l’État de Californie pour causer le cancer, dommages à la naissance ou autre. Pour

plus d’informations rendez-vous www.P65Warnings.ca.gov.

Ce produit peut vous exposer à des produits chimiques comme le plomb, qui

ATTENTION: Tous les travaux doivent être effectués par du personnel
qualifié formé à la bonne application, installation et maintenance des systèmes
conformément aux codes et règlements locaux.

ATTENTION: Si le réducteur de pression, termostatico regolabile, n'est pas installé,
mis en service et entretenu correctement, selon les instructions contenues dans ce
manuel, il peut ne pas fonctionner correctement et peut mettre en danger l'utilisateur.

ATTENTION: S'assurer que tous les raccordements sont étanches.

ATTENTION: Lorsque vous effectuez les raccordements d'eau, assurez-vous

que la tuyauterie reliant le termostatico regolabile n'est pas mécaniquement
des overstressed. Au fil du temps, ceci pourrait causer des ruptures, avec
pour consequence des pertes en eau qui, à leur tour, peuvent causer des
dommages à la propriété et/ou les gens.

ATTENTION: Les températures de l'eau supérieure à 100°F (38°C) peut
être dangereux. Au cours de l'installation, mise en service et l'entretien de
le réducteur de pression, le termostatico regolabile, prendre les precautions
nécessaires afin de s'assurer que de tells températures ne compromettent
pas les gens.

ATTENTION: Pour prévenir tout dommage qui provoque le mitigeur
électronique à ne pas fonctionner correctement, le traitement de l’eau très
agressive avant d’entrer dans la vanne de le termostatico regolabile.

LAISSEZ CE MANUEL AVEC L’UTILISATEUR

3

Operating principle

HOT

COLD

MIXED

connections

The thermostatic mixing valve mixes hot and cold water in such a way as to maintain constant set
temperature of the the mixed water at the outlet. A thermostatic element is fully immersed into the
mixed water. This element then contracts or expands causing movement of the piston, closing
either the hot or cold inlets, regulating the flow rates entering the valve. If there are variations of
temperature or pressure at the inlets, the internal element automatically reacts to restore the original
temperature setting. In the event of a failure of either the hot or cold supply, the piston will shut off,
stopping water discharging from the mixed water outlet.

Thermal shutoff

In the event of a failure of either the hot or cold supply, the piston will shut off, stopping water
discharging from the mixed water outlet. The Caleffi 5213 series thermostatic mixing requires a
minimum temperature differential from hot inlet to mixed water outlet of 18°F (10°C) to ensure the
correct operation of the thermal shutoff feature.

COLD

NPT version

Sweat version

Compression version

HOT

MIXED

PEX crimp version

4

Flow curve

(l/min) (

p (psi)

Δ

20

10

5
4
3

2

1

0.5

0.4 0.4

0.3

0.2

0.1

.5

0.3

0

1

2

2

5

10

5

20

1/2”, 3/4”, 1” • Cv= 2 • Kv=1.7 (m3/h)

Flow should never exceed standards for pipe size and materials.

10

50

(psi) (bar

20

10

5
4
3

2

1

0.5

0.3

0.2

0.1

)

0

2

gpm

G

1.0

0.5

0.4

0.3

0.2

0.1

0.05

0.04

0.03

0.02

0.01

)

Use

The Caleffi 5213 series is a thermostatic mixing valve suitable for single or multiple point of
use applications in accordance with installation rules and indications specified in ASSE 1070

standards.

The system must be sized taking into account the current legislation with regard to the nominal
flow rate of each outlet.

5

Exploded diagram

1 Protective cap

2 Temperature spindle locking nut

3 Upper body

4 O-ring seal

4a O-ring seal

5 Thermostatic element

6 Flow conveyor

7 Lower spring

8 Valve body

9 Union washer, quantity 3 per valve

10 Union nut, quantity 3 per valve
11 Inlet port male tailpiece with integral
check valve, quantity 2 per valve

12 Inlet port conic lter, quantity 2 per valve

13 Outlet port tailpiece, quantity 1 per valve

1

2

3

4

5

6

7

Compression

13

NPT male

9118

104a12

Sweat

PEX crimp

Compression

6

Replacement ttings

Complete kit Valve size Connection Union Nut Tailpiece Washer

consult Caleffi
NA20640
NA20640C (1) 59893A(1)
NA20649
NA20649C 59904A
NA20647
NA20647C NA10484(1)
NA20650
NA20650C 59840A(1)
NA20659
NA20659C 59905A(1)
NA20657
NA20657C NA10485(1)
NA20660
NA20660C 59894A(1)
NA20669
NA20669C 59906A(1)
NA20667
NA20667C NA10486(1)

3

/8 inch

½ inch

¾ inch

1 inch

compression

NPT male

Sweat

PEX crimp

F61008/C

NPT male

Sweat

PEX crimp

NPT male

incl. w/ tailpc

Sweat

PEX crimp F61008/C

F0000718(2)

R31981

NA10002(1)

F0000492

31901A

NA10003

F0000520

59817A

59834A

F0000521

F50055

(1) C = check valve included in tailpiece. Use in inlets.
(2) Check valve not included: source separately check valve code NA10479.

Replacement parts

NA10405............

Replacement check
valves for 5213 series
thermostatic mixing
valves.

check valve for PEX fittings

F52429..........................................conical filter

Conical inlet filter
for 5213 series
thermostatic mixing
valves.

R39204... check valve for sweat, NPT fittings

NA10479.................check valve for 521333A

7

Installation

The following instructions must be read prior to the installation of a Caleffi 5213 series thermostatic mixing
valve. The installer should also be aware of his responsibility and duty of care to ensure that all aspects
of the installation comply with current regulations and legislation.
The Caleffi 5213 series should be installed using the appropriate standard, code of practice and legislation
applicable to each state and following the details in this manual. The Caleffi 5213 series must be installed
by a licensed plumber.

Prior to the installation of the Caleffi 5213 series valve, the system must be checked to ensure that the

system operating conditions fall within the recommended operating range of the valve, i.e.
verify supply temperatures, supply pressures, risk assessments, etc.

The supply system into which the Caleffi 5213 series is to be installed must be thoroughly flushed and
cleaned to remove any debris which may accumulate during the installation. Failure to remove any debris
will affect the performance and the manufacturer’s warranty on the product. In areas that are subject to
high levels of aggressive water, provision must be made to treat the water prior to it entering the valve.

The valve can be installed in any position, whether vertical or horizontal. It is essential that the access to
the valve is not obstructed for future maintenance that may be required to the valve or associated fittings.

It is essential that when the installation is designed and/or installed, all current legislation is noted, e.g. the
maximum distance from the outlet of the valve to any terminal fitting.

The connecting hot and cold water supplies must be connected to the valve strictly in accordance with
the indications on the body of the valve. The inlets of the valves are clearly marked with the letter H (Hot)
and C (Cold). The outlet is marked with the word MIX.

Where one or both the incoming supply pressures are excessive, a Caleffi pressure reducing valve should
be installed to reduce the pressure(s) within the limits.

Any thermostatic mixing valve must be installed with isolating valves, line strainers and check valves at
both the inlets. Isolating valves are required so that the water supply to the valve can be isolated in the
event that servicing is required. Strainers are required to prevent debris from entering the valve. Check
valves are required to both hot and cold inlets to prevent cross-connection.

The Caleffi 5213 series is supplied complete with the check valves at the hot and cold inlets. The check
valve of the sweat version must be dismantled from the tail piece before soldering and then reassembled.

To ensure that the performance of the Caleffi 5213 series valve is maintained (in the event of cold water
failure), the temperature of the hot water supply at the point of entry to the valve must be a minimum of
18°F higher than the set mixed water discharge temperature.

The piping to and from the valve must not be used to support the weight of the valve.

If the valve is not installed correctly, it will not function correctly and may put the user in danger.

Scan to view

·

5213 MixCal

TM

Installation Tip

8

Installation diagram

T

MIXED

OUTLET

HOT SUPPLY COLD SUPPLY

Temperature

limiting valve

(if required)

Point of use

Multiple use

COLD

MIX
MIX

HOT

Pressure

reducing valve

(if required)

Isolating

valve

Strainer
& check

valve

Strainer
& check

valve

Isolating

valve

Pressure

reducing valve

(if required)

Multiple use with sensor faucet

COLD

MIX
MIX

HOT

9

Dimensions

C

B B

F

A

D

E

Male NPT

A

Sweat

PEX

Compression

crimp

A

Code A B C D E F

Wt
(lb)

521342A ½" NPT male 2 13/16" 5 11/16 " 4 5/16" 3" 1 15/16" 2.0
521352A ¾" NPT male 2 13/16" 5 11/16 " 4 5/16" 3" 1 15/16" 2.0
521362A 1" NPT male 2 15/16" 5 7/8" 5 3/16" 3 ¼" 1 15/16" 2.0
521347A ½" PEX crimp 3" 6" 5½" 3 5/8" 1 15/16" 2.0
521357A ¾" PEX crimp 3" 6" 5½" 3 5/8" 1 15/16" 2.0
521367A 1" PEX crimp 3 1/16" 6 1/8" 5 9/16" 3 11/16" 1 15/16" 2.0
521349A ½" sweat 2 11/16" 5 7/16 " 4 5/8" 2 11/16 " 1 15/16" 2.0
521359A ¾" sweat 2 7/8" 5 ¾" 4 13/16 " 2 15/16 " 1
521369A 1" sweat 3

3

521333A

/8"

compression

2 11/16" 5 3/8" 5 3/16" 3 5/16 " 1 15/16" 2.0

1

/8" 5

5

/16" 5 3/8" 3 ¼" 1 15/16" 2.0

15

/16 " 2.0

10

Commissioning

Upon completion of the installation, the valve should be tested and commissioned as per the
procedure outlined below or as specified by the local authority.

The following instructions should be read and understood prior to commissioning the Caleffi 5213
series thermostatic mixing valve. If, under any circumstances, there are aspects of the installation/
system which do not comply with our requirements or the specifications as listed, the valve must
not be put into service until the installation/system does comply.

1) Ensure that the system is throughly clean and free from debris prior to commissioning the
thermostatic mixing valve.

2) Use a suitably califbrated and accurate digital thermometer to comission temperatures.
The valve is commissioned by measuring the mixed water temperature at the outlet.

3) In accordance with the anti-scald requirements, water installation shall deliver hot water at
the outlet of the sanitary fixtures used primarily for personal hygiene purposes at a
temperature not exceeding:

· 120°F (49°C) or as specified by authority having jurisdiction.

4) The temperature at the outlet of each valve must be set taking into consideration any
fluctuations which may occur within the system due to simultaneous demand.

5) Once the supply temperatures are stabilized and the normal operating conditions are
established, the valve can be commissioned. Due to the unique design of the cap, the
temperature setting can be adjusted by removing the cap from the valve body and
reversing the cap onto the temperature adjustment spindle. Use the following sequence when
commissioning the valve.

a) Set the mixed water discharge temperature to the required temperature.
b) Measure and record the temperature of hot and cold water supplies at the
connections to the valve.
c) Measure and record the temperature of the water discharging from the largest and
smallest volume draw off points.
d) Perform the thermal shut-off test. Isolate the cold water supply to the Caleffi valve
and monitor the mixed water temperature. The outlet flow should quickly cease
flowing.
e) Measure and record the maximum mixed water temperature. The temperature
should not exceed the temperature allowed by the applicable standard or code of
practice for each state.
f) Restore the cold water supply to the valve and measure and record the outlet
temperature after the mixed water temperature has stabilized. The final temperature
found during this test should not exceed the permitted values +3°F.

6) Once the desired temperature has been reached, the adjustment spindle can be locked in
position using the locking nut supplied with the valve.

7) Once the desired temperature is established, remove the cap from the temperature
adjustment spindle and secure the head back on to the valve into its original position to
prevent tampering by unauthorised persons.

We recommend that the above information is recorded in the Commissioning Report and updated
on the Service Report when any work is performed on the valve.

11

Temperature adjustment

1

2

3

View of temperature adjustment

Attaching temperature adjustment cap

Temperature adjustment cap in place

4

Locking adjustment spindle with locking nut

12

Maintenance

In service tests should be conducted regularly to monitor and record the performance of the valve.
Deterioration in performance can indicate the need for servicing of the valve and/or water supply.
If, during these tests, the mixed water temperature has changed significantly from the previous
test results, record the change before re-adjusting the mixed water temperature. If the final mixed
water temperature is greater than the permitted values, Verify details quoted in the Installation and
Commissioning sections of this manual and that service work is required.

The following actions are recommended at least every 12 months, or more frequently if the need
arises, and that the following steps are checked to maintain optimum valve performance.

With reference to the exploded diagram on page 6:

1) On the Caleffi 5213 series valves, the inlet conic filters (12) on both the hot and cold water
supplies can be removed for cleaning by unscrewing the inlet union nuts and carefully
pulling apart the connecting piping.

2) The built in check valves (11) on the Caleffi 5213 series valves can be accessed in a similar
way to 1) to ensure freedom of operation and correct operation.

3) If service is required, the internal components of the valve can be disassembled for
cleaning and de-scaling:

a) Remove the cap of the valve (1) and the locking nut (2).
b) Remove the upper body (3) using a suitable spanner.
c) Remove parts 5-7 noting the correct orientation.
d) Remove all signs of scale and dirt from the internal part using a suitable de-scaling
solution.
e) Re-assemble all the components.

Once the above servicing is performed follow the commissioning details in the previous section
ensuring that a suitably accurate thermometer is used.

Should the valve still not function correctly, it may be necessary to replace the thermal element
or other components. Refer to spare part kits and contact Caleffi Technical Support for details
and advice.

Spare parts

With reference to the exploded diagram, the spare parts are available on request for Caleffi 5213
series valves, see table on page 7.

13

Troubleshooting

Under normal operating conditions the Caleffi 5213 series thermostatic mixing valve will provide a
very high level of performance. However, in some circumstances, when the included maintenance
plan is not properly performed, the following problems may arise.

Sympton Cause Corrective action

Hot water at the cold faucets a) Inserted check

operation failed.
b) Check valves not
installed.

Fluctuating mixed water
temperature

Erratic flow of water from
the valve

No water flowing from the
valve

Valve does not shutoff when
tested

a) Erratic supply tem­peratures at the valve
inlets.
b) Starvation of the
water supplies at the
valve inlets.
c) Incorrect commis­sioning of the valve.

a) Insufficient water
supplies.
b) Fluctuations in
supply pressure and/
or temperatures.
c) Adverse effect cre­ated by other draw-off
points on the sytem.

a) In-line filters
blocked.
b) Insufficient supply
pressures.
c) Debris obstructing
valve operation.

a) Installation not in
accordance with this
instruction manual.
b) Minimum tempe­rature differentail not
achieved.
c) Internal mechanism
impaired by debris.

Replace faulty check valves.

Restore inlet conditions within the
limits of the valve.

Stabilize inlet supply conditions.

a) Clean filters.
b) Restore inlet supplies.
c) Clean debris or scale from valve
internals.

a) Install as outlined in these instruc­tions.
b) Raise hot water temperature.
c) Clean debris or scal from valve.

14

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15

16

Caleffi North America, Inc.
3883 West Milwaukee Road
Milwaukee, WI 53208
T: 414.238.2360 F: 414.238.2366
4-30-18