Sanitary tapware - Low pressure thermostatic mixing valves - General technical specification

This European Standard specifies general construction, performance and material requirements for PN 10 thermostatic mixing valves (TMV) and includes test methods for the verification of mixed water temperature performance at the point of use below 45 °C. This does not exclude the selection of higher temperatures where available. When these devices are used to provide anti-scald protection for children, elderly and disabled persons the mixed water temperature needs to be set at a suitable bathing temperature (body temperature - 38 °C) as children are at risk to scalding at lower temperatures than adults. This does not obviate the need for supervision of young children during bathing.
It applies to valves intended for use on sanitary appliances in kitchens, washrooms (incl. all rooms with sanitary tapware, e.g. toilet and cloakrooms) and bathrooms operating under the conditions specified in Table 1.
This standard allows TMVs to supply a single outlet or a small number of outlets in a "domestic" application (e.g. one valve, controlling a shower, bath, basin and/or, bidet), excluding valves specifically designed for supplying a large number of outlets (i.e. for institutional use).
The tests described are type tests (laboratory tests) and not quality control tests carried out during manufacture.
Table 1 - Conditions of use

Sanitärarmaturen - Thermostatische Mischer für die Anwendung im Niederdruckbereich - Allgemeine technische Spezifikation

Robinetterie sanitaire - Mitigeurs thermostatiques basse pression - Spécifications techniques générales

No scope available

Sanitarne armature - Termostatski mešalni ventili (PN 10) - Splošna tehnična specifikacija

General Information

Status
Not Published
Current Stage
4060 - Closure of enquiry - Enquiry
Due Date
24-Jun-2021
Completion Date
24-Jun-2021

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SLOVENSKI STANDARD
SIST EN 1287:2017/oprA1:2021
01-maj-2021
Sanitarne armature - Termostatski mešalni ventili (PN 10) - Splošna tehnična
specifikacija

Sanitary tapware - Thermostatic mixing valves (PN 10) - General technical specification

Sanitärarmaturen - Thermostatische Mischer für die Anwendung im Niederdruckbereich -

Allgemeine technische Spezifikation

Robinetterie sanitaire - Mitigeurs thermostatiques (PN 10) - Spécifications techniques

générales
Ta slovenski standard je istoveten z: EN 1287:2017/prA1
ICS:
91.140.70 Sanitarne naprave Sanitary installations
SIST EN 1287:2017/oprA1:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 1287:2017/oprA1:2021
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SIST EN 1287:2017/oprA1:2021
DRAFT
EUROPEAN STANDARD
EN 1287:2017
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
April 2021
ICS 91.140.70
English Version
Sanitary tapware - Thermostatic mixing valves (PN 10) -
General technical specification

Robinetterie sanitaire - Mitigeurs thermostatiques (PN Sanitärarmaturen - Thermostatische Mischer für die

10) - Spécifications techniques générales Anwendung im Niederdruckbereich - Allgemeine

technische Spezifikation

This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 164.

This draft amendment A1, if approved, will modify the European Standard EN 1287:2017. If this draft becomes an amendment,

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of

this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN in three official versions (English, French, German). A version in any other

language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC

Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1287:2017/prA1:2021 E

worldwide for CEN national Members.
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SIST EN 1287:2017/oprA1:2021
EN 1287:2017/prA1:2021 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

1 Modification to Subclause 12.4.1 .............................................................................................................. 4

2 Modification to Subclause 13.2.2.1 ........................................................................................................... 4

3 Modification to Subclause 13.5.1.3 ........................................................................................................... 5

4 Modification to Subclause 13.5.1.5 ........................................................................................................... 6

5 Modification to Subclause 13.5.2.5 ........................................................................................................... 7

6 Modification to Subclause 13.5.2.5 ........................................................................................................... 7

7 Modification to Subclause 13.5.4.2 ........................................................................................................... 8

8 Modification to Subclause 13.5.4.3 ........................................................................................................... 9

9 Modification to Subclause 13.5.5.4.2 ....................................................................................................... 9

10 Modification to Subclause 13.5.5.2 ......................................................................................................... 10

11 Modification to Subclause 13.5.5.4.1 ..................................................................................................... 11

12 Modification to Subclause 13.5.5.4.2 ..................................................................................................... 11

13 Modification to Subclause 16.2.3 ............................................................................................................ 12

14 Modification to Subclause 16.8.3.1 ......................................................................................................... 13

15 Modification to Subclause 16.8.3.2 ......................................................................................................... 13

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SIST EN 1287:2017/oprA1:2021
EN 1287:2017/prA1:2021 (E)
European foreword

This document (EN 1287:2017/prA1:2021) has been prepared by Technical Committee CEN/TC 164

“Water supply”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
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SIST EN 1287:2017/oprA1:2021
EN 1287:2017/prA1:2021 (E)
1 Modification to Subclause 12.4.1
Replace entire subclause: "
a) Connect the tap to the test circuit;

b) with the outlet orifice(s) artificially closed, and generally turned downwards open the obturator(s);

c) apply to the inlet of the tap a water pressure of (0,4 ± 0,02) MPa [(4,0 ± 0,2) bar] and maintain it for

(60 ± 5) s and adjust its temperature control over the full range;

d) within (5 ± 1) s reduce the pressure to (0,02 ± 0,002) MPa [(0,2 ± 0,02) bar] and maintain it for

(60 ± 5) s. "
with: "
a) Connect the tap to the test circuit;

b) with the outlet orifice(s) artificially closed, and generally turned downwards open the obturator(s);

c) apply to the inlet of the TMV a water pressure of (0,4 ± 0,02) MPa [(4,0 ± 0,2) bar] and maintain it

for (60 ± 5) s and adjust its temperature control over the full range;

d) within (5 ± 1) s reduce the pressure to (0,02 ± 0,002) MPa [(0,2 ± 0,02) bar] and maintain it for

(60 ± 5) s. ".
2 Modification to Subclause 13.2.2.1
Replace entire subclause:

" The measurement is made at the maximum available flow rate going from cold to hot and then from

hot to cold. For the measurement a TMV as supplied or the outlet pipework, as defined in A.3 is used.

Single sequential valves shall be adjusted to be able to attain a maximum 44 °C. Starting at full cold (off)

slowly adjust to 44 °C and then return to 34 °C.

Other device control systems (e.g. push-buttons, touch screens etc.) shall be tested by a method that

ensures the correlation between outlet temperature and flow rate can be suitably recorded.

The procedure is subject to agreement between manufacturer and test laboratory. "

with:

" The measurement is made at the maximum available flow rate going from cold to hot and then from

hot to cold. For the measurement a TMV as supplied, or, for valves without integral atmospheric

discharge, with the outlet pipework, as defined in A.3, is used.

Single sequential valves shall be adjusted to be able to attain a maximum 44 °C. Starting at full cold (off)

slowly adjust to 44 °C and then return to 34 °C.

Other device control systems (e.g. push-buttons, touch screens etc.) shall be tested by a method that

ensures the correlation between outlet temperature and flow rate can be suitably recorded.

The procedure is subject to agreement between manufacturer and test laboratory. ".

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SIST EN 1287:2017/oprA1:2021
EN 1287:2017/prA1:2021 (E)
3 Modification to Subclause 13.5.1.3
Replace entire subclause: "

a) Starting from full hot determine the reference points in the following sequence: (38 ± 0,5) °C,

(36-1) °C, (40-1) °C;

b) apply and maintain the initial settings shown in Table 8 and allow water to flow until the outlet

temperature has stabilized;
c) start recording the mixed water temperature versus time;
d) within 1 s adjust the temperature control device to read ϑ = (36-1) °C;
mix
e) allow the outlet temperature to stabilize;
f) restore the settings in b);
g) within 1 s adjust the temperature control device to read ϑ = (40-1) °C;
mix

h) upon temperature stabilization stop recording mixed water temperature versus time. "

with: "

a) Apply and maintain the initial inlet settings shown in Table 8 and allow to flow for a period of

maximum 30 s;

b) starting from full hot, determine the position of the temperature control for the set temperatures in

the following sequence:
T1 : (38-1) °C;

T2 : (36-1) °C, and record the corresponding mixed water temperature measured (ϑ );

T3 : (40-1) °C, and record the corresponding mixed water temperature measured (ϑ );

c) set the temperature control into the position T1 and allow the mixed water temperature to stabilise

for a period of maximum 30 s;
d) start recording the mixed water temperature (ϑ ) versus time;
mix
e) within 1 s set the temperature control to the position T2;

f) allow the mixed water temperature (ϑ ) to stabilise for a period of maximum 30 s;

mix

g) set the temperature control into the position T1 and allow the mixed water temperature (ϑ ) to

mix
stabilize for period of maximum 30 s;
h) within 1 s set the temperature control to the position T3;

i) allow the mixed water temperature (ϑ ) to stabilise for a period of maximum 30 s, stop

mix
recording the mixed water temperature versus time. ".
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SIST EN 1287:2017/oprA1:2021
EN 1287:2017/prA1:2021 (E)
4 Modification to Subclause 13.5.1.5
Replace entire subclause:

" The mixed water temperature ϑ shall not differ from the set temperatures ϑ for a duration (t -

mix 0 2
t ) longer than 1 s with an amplitude of more than ϑ = 3 K.
1 x

t = 5 s after disturbing the respective equilibrium the mixed water temperature shall not differ by

more than 2 K from the set temperatures nor oscillate in excess of 1 K .

NOTE If this is done with single sequential control valves (Type 1) the flow rate will also change i.e. not

maintaining Table 8 conditions. "
with:

" Apply and maintain the initial settings shown in Table 8 and allow the mixed water temperature

(ϑ ) to The mixed water temperature (ϑ ) shall not differ more than 3 K from the respective set

mix mix

temperatures (ϑ , ϑ or ϑ ) for a duration (t – t respectively t – t ) longer than 1 s.

0 2 3 2 1 7 6

Maximum 5 s (t , respectively t ) after disturbing the respective equilibrium the mixed water

3 8

temperature shall not differ by more than 2 K from the set temperatures (ϑ or ϑ ) nor oscillate in

2 3
excess of 1 ϑKPP.

NOTE See also informative graph included in Figure 1. If this is done with single sequential control valves

(Type 1) the flow rate will also change i.e. not maintaining Table 8 conditions. ".

Add also Figure 1: "
Figure 1 — Temperature control operation ".

Update the figure numbering and the related cross references throughout the document.

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SIST EN 1287:2017/oprA1:2021
EN 1287:2017/prA1:2021 (E)
5 Modification to Subclause 13.5.2.5
Replace entire subclause: "

a) Apply and maintain the initial settings shown in Table 8 and allow water to flow until the outlet

temperature has stabilized;
b) Start recording outlet temperature versus time.

c) Within (5-6) s adjust the flow control of the valve under test to deliver 50 % of the flow rate

according to a), in case the tested valve has no flow control the outlet pipework A.3 or A.4 shall be

used instead.
d) Upon temper
...

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