92

Thermostatic Mixing Valves

THERMOSTATIC MIXING VALVES(Safety for the Hot Water System)

96

95

99

100/101

102

103

94

Recommendations

General Features

97Technical Advantages

98Installation Advice

PREMIX Selection Guide

• Coefficient of simultaneous use, probable flow rate andPREMIX sizing

PREMIX Range

• Quick Choice Guide• Thermostatic Mixing Valves & Regulators

Stopcocks & Maintenance

• Stopcocks

• Thermostatic Cartridges

• Maintenance Kits

Maintenance & Commissioning

• Preventative Maintenance

• Calibration & Maximum Temperature Limitation

About Legionella

What is Legionella? What are the risks ?

The PREMIX range benefits from a European Community grant.

104-105Controls with Duty Flush

9594

RecommendationsAbout Legionella

What is Legionella?It is a respiratory infection which is fatal in 15-20% of cases, caused by the Legionella bacteria.The people most at risk are elderly smokers, people with respiratory problems or those withweakened immune systems. Legionella bacteria develop in the warm water found in pipework andcentral heating systems, but only become dangerous when they are inhaled in aerosol format, asparticles suspended in water droplets (i.e. aerosol). They spread into the lungs, and are absorbedby the immune system, and rapidly proliferate in white blood cells. Legionella is treated byantibiotics (Macrolide).The World Health Organisation (WHO) cite the risk levels as 1,000 CFU* Legionella per litre ofwater (50 for hospitals).* Colony Forming Units

Which installations are at risk?The installations most at risk are those which provide the ideal environment for Legionella todevelop i.e. stagnant water between 20-46°C, with a peak temperature between 30-37°C, anddeposits such as scale, rust, mud, etc.).

The alert level to undertake treatment is 1,000 CFU of Legionella pneumophilia / litre of water. For high risk patients (with suppressed immune systems) in the hospital environment, theconcentration level of Legionella will be maintained beneath the alert level for water withdrawn,in securing the points-of-use (independent and instant production of hot water, 2 micron terminal microfilters, etc.).

Current Curative Treatments are Ineffective.- chemical shock: an chlorine injection ≥ 10 mg/litre for 8 hours.- thermal shock: circulating hot water at 70°C for 30 minutes.

1. These treatments only have a short term effect: The system can be very quickly recolonised within 3 - 4 weeks. In corroded storage tanks and installation dead-legs, Legionella bacteria can develop in thescale and biofilm, finding a refuge which helps them to resist temperature changes andbactericidal disinfectant solutions. Following a curative treatment, there is a risk that the biofilm will spread in the system,allowing Legionella bacteria to colonise new areas after the treatment.

2. They can have a detrimental effect on the distribution and drainage systemwhich are subject to extreme conditions. It is essential to ensure that the system will withstandthermal expansion of the materials (pipework, etc.), and the temperature and the type and doseof the disinfectants. (For example: damage caused by a PE sleeve joint becoming detached between the betweenthe floor trap and a shower tray manifold, following a disinfection at 70°C.)

3. There are significant risks to users when the treatments are taking place:- the risk of 3rd degree burns during thermal shocks.- the risk of poisoning during the chemical shock treatment.

4. These operations are costly and difficult to undertake fully at all points in the system(various deposits, dead-legs, heat loss, etc.) requiring the water supply to be out-of-service.

Hospitals…

Unknown contaminationsource

Overseastrips

Hotels,camp sites…

Water-cureestablishments

Care-Homes…

Chlorine

70°C

Preventative treatment is an effective means of fighting againstthe risk associated with Legionella. Legionella bacteria are destroyed above 60°C and can not multiply above47°C. The solution is to generate and store hot water at temperatures above65°C and to distribute hot water in the circulating loop at 55°C. Hot and Coldwater should be mixed as close as possible to the discharge points, using oneor more thermostatic mixing valves per distribution branch (PREMIX).

Temperature

up to 20°C

25 to 46°C

50°C

60°C

Legionella Development

Dormant Lethargy

Multiplication

90% die in 2 h

90% die in 2 min

Legionella development / temperatureSource : CSTC Belgium 11/02

We recommend a circulating loop that maintainsthe hot water temperature above 55°C.

Boiler65°C

CW

MW

M

Circulating loop ≥ 55°C

CW

We recommend that all buildings open to the general public should monitor for Legionella.

• Recent regulations agree that the only way to limit the development of Legionella bacteria is to produce and deliver hot water athigher temperatures.

• The risk of scalding in healthcare facilities is therefore significantly increased:- at 50°C: 3rd degree burns within 100 seconds. Healthy adult skin will suffer burns in 30 seconds.- at 60°C: 3rd degree burns within 5 seconds on average (5 seconds for an adult, 1-2 seconds for children).

To comply with these regulations, we therefore recommend installing a thermostatic mixing valve:- PREMIX Security at the boiler outlet to lower the temperature of the hot water distributed (i.e. from 65° to 55°C).- PREMIX Comfort upstream and as close as possible to the point-of-use to avoid any risk of scalding (i.e. 45°C maximum).

Note:Methods for monitoring and analysing the levels of Legionella in hot water storage and distribution systems willvary by country. You must comply with current local regulations and water byelaws set by the appropriateregulatory bodies in your own country.

Guidance for Monitoring Legionella Bacteriawhich requires the bacteriological quality of water to be monitored in all work places by a UKAS accredited laboratory(Source: L8 Legionnaires’ Disease: The control of legionella bacteria in water systems, Health & Safety Executive, 2004):

Monitoring should take place:• Monthly in water systems that are treated with biocides and where hot water storage and distribution temperatures are lower than those recommended to control Legionella (Hot water should be stored at 60°C and distributed at 50°C).

• Weekly in systems where a consistent anti-bacterial treatment regime has not been achieved. The system and treatments must be reviewed to ensure a consistent regime is achieved.

Analysis for Legionella should also be undertaken in hospital wards with ‘at risk patients’ e.g. hospital wards with immuno-compromised patients. Samples should be taken as follows:- Cold water system - from the cold water storage tank and the furthest outlet from the tank. - Hot water system - from the calorifier outlet; the return supply to the calorifier; the base of the calorifier where the drainvalves are fitted; and the furthest outlet from the calorifier.Samples may also be required in sensitive areas e.g. hospital wards with ‘at risk’ patients .

Areas considered at risk of contamination by Legionella bacteria include outlets that can produce hot water in aerosol format,particularly showers and hand sprays.

Hot Water Temperature Control• At the hot water production outlet the hot water temperature should be always above 55°C. • In the hot water storage facility the water must be raised to a high temperature to at least once every 24 hours: either for 2minutes at 70°C; 4 minutes at 65°C, or 60 minutes at 60°C.

• At all points in the distribution system the hot water temperature must be equal to or over 50°C with the exception of thefinal supply pipes to the point-of-use.

• The final supply pipes from group thermostatic mixing valves to the point-of-use must contain less than 3 Litres of water.• The maximum hot water temperature at the point-of-use is 50°C in any room used for washing or as abathroom, 60°C in other rooms and 90°C in kitchens with appropriate notices.

9796

Technical AdvantagesGeneral Features

Hot water

Sliding valve

Cold water

Control knob

Temperature stop

Check valve Check valve

Thermostatic element

Mixing chamber

COMFORTThe PREMIX® thermostatic mixing valve ensures a constant temperature regardless of variationsin pressure or flow rate in the system. The response is immediate for all models.PREMIX® anticipates and corrects fluctuations in pressure and temperature to ensureuser's comfort and safety.

ANTI-SCALDING SECURITY• Automatic safety feature ensures that the hot water supply is shut-off if the cold supply isinterrupted.

• Temperature limitation: a locking ring limits the maximum temperature at the outlet (safetydevice). The temperature control is pre-set at the factory at 40°C and the installer can change thesetting by adjusting the limiting ring.

PREMIX® provides security against scalding.

ANTI-LEGIONELLA PREVENTATIVE & PERMANENT SOLUTION To avoid any risk of Legionella developing the preventative solution is to ensure that hotwater is maintained above 55°C at all times and at all points in the distribution system.

• Install a thermostatic mixing valve as close as possible to the point-of-use.• Maintain the hot water temperature above 50°C.

PREMIX prevents the risk of bacteria proliferation.

Designed for commercial applications, the PREMIX® groupthermostatic mixing valve delivers a highly stable blend of mixedwater supply at the desired temperature. It enables simultaneoussupply to a large number of sanitary points-of-use (showers,

washbasins, etc.)Fast to react, it regulates the hot water in the system,maintaining a constant temperature regardless of variationsin pressure, flow rate and temperature in the system.The mixing valves benefit from the PREMIX technology(automotive thermo-reactive cell technology) providing precise

temperature control with a highly effective performance in comparisonwith current technologies i.e. bi-metal, double pilots, etc.

We recommend a circulating loop thatmaintains the hot water temperatureabove 55°C.

Boiler65°C

CW

MW

M

Circulating loop ≥ 55°C

CW

OperationThe thermostatic element submerged in the heart of the mixing chamber reacts rapidly to everytemperature variation. Constantly in motion, it expands or contracts with changes in flow rate orpressure to control a sliding valve that opens and closes the hot and cold water inlet ports or viceversa. The piston travel is limited to 1mm, operating in high levels of precision.

• As the mixed water temperature rises, the thermostatic element expands and pushes the slidingvalve down. This immediately restricts the passage of hot water and opens the cold inlet.

• As the mixed water temperature falls, the thermostatic element contracts and the sliding valve ispushed upwards by the balancing spring. It immediately restricts the passage of cold water andopens the inlet of hot water.

• In case of a failure in cold water supply, the thermostatic element expands instantly and thesliding valve closes the hot inlet. The outflow is stopped instantaneously preventing the userfrom scalds and thermal shock.

The PREMIX® mechanism uses technological advances developed in the aerospace and car industries to create a simpler,more accurate and more reliable valve than those using older technology. Minimising the number of moving parts inthe mechanism reduces the requirement for maintenance. The PREMIX® valve offers a real competitive advantage.

Long Life and ReliabilityThe automotive thermostatic cell of the PREMIX® is located in the heart of the mixing chamber. Thisposition enables superior sensitivity to hot and cold flows and water pressures. It optimises theregulation of both hot and cold water supplies.The PREMIX® range is covered by a 10 year warranty against any manufacturing defects.

Precise Temperature ControlPREMIX® valves are factory set to a nominal temperature of 40°C ± 1°. They are precise to onedegree in the recommended range of flow. The control knob enables simple temperatureadjustment. The control knob can be limited at the desired temperature in a tamperproof position.

Minimal Pressure LossThe PREMIX® mechanism (without hydraulic relays) enables direct circulation of water betweeninlets and outlet. This reduces the pressure loss and maintains flow rate to the outlet to ensureexcellent performance at low, medium and high pressures.

Minimum Maintenance• The internal working is designed to be simple with a minimum number of moving parts.• The scale-proof mechanism is corrosion resistant.• Recommended maintenance: Carry out regular mixed water temperature checks test and anti-scald failsafe.

Easy and Low Cost Maintenance• Simple cartridge mechanism is easy to change, accessible from the front withouthaving to remove the whole mixing valve.

• Filters and non return valves are accessible from the exterior without having to removethe mechanism.

Comprehensive Range at Competitive PricesPREMIX® products are available in four sizes (from 3/4"BSP(M) to 1"1/2 BSP(M))with a range of maximum rates between 55-190 lpm.Optional isolating ball valves with test points and strainers are available.

PREMIX Security

PREMIX Comfort

• PREMIX Security: for hot water circulating loops ≥ 55°C.Install at the hot water production outlet (55 - 190 lpm adjustable from 44 - 58°C) :> 15% energy savings: minimises heat loss (much less heat loss in a circulating loop at 55°C than in a system that does not circulate at 70°C).> Helps to prolong the life of the system (maintaining hot water in a non-circulating

loop > 65°C leads to the premature aging of the installation (wears out and scale buildsup more quickly).

> Reduces the risk of scalding by reducing the temperature at the point-of-use.> Regulates the wide variations in temperature that result from the hot water production

equipment.

• PREMIX Comfort: to supply 6 - 40 points-of-use.Install upstream of the installation (55 - 190 lpm, adjustable from 30 - 42°C) :> Prevents the risk of scalding by lowering the hot water temperature at the point-of-use.> Ensures a constant temperature at the point-of-use (regulates fluctuations).

• PREMIX Compact: to supply 2 - 10 points-of-use*.Install upstream of the valve (19 - 23 lpm. adjustable from 30 - 60°C) :> Prevents the risk of scalding by lowering the hot water temperature at the point-of-use.> Ensures a constant temperature at the point-of-use (regulates fluctuations). PREMIX Compact

* Depending on the flow rate at the point-of-use (NB: TEMPOMATIC, etc. = 3 lpm).See also the SECURITHERM range of thermostatic mixing valves.

WARRANTY

•

W A R R A NTY •

10 YEARS

The PREMIX Solution

9998

PREMIX® Selection GuideInstallation Advice

Situation 3: No Circulating Loop, PREMIX Comfort or PREMIX Compact and system duty flush.

On installations where there is no circulating loop,stagnating water at temperatures below 50 °C cancause Legionella bacteria to develop.

Solution :

- PREMIX Comfort or PREMIX Compact to lowerthe temperature of the water at the points-of-use toa maximum of 50°C.

- DELABIE electronic mixers, taps or valves withautomatic duty flush can be installed at theextreme end of each distribution arm (as aminimum). This will avoid any bacterialdevelopment due to the automatic duty flush for ~ 45 seconds every 24 hours after the last use.

Situation 1 : Circulating Loop with PREMIX Security WITH maximum temperature limitation at the point-of-use.

Material / Dimension

Copper 18 x1

Galvanised steel DN 15

PEX plastic 18 x 2.5

PP plastic 20 x 1.9

15 m

15 m

23 m

14 m

Relation Capacity / Pipe lengths(Capacity = Interior section x Length)

PREMIX Security enables the hot water circulatingloop to be maintained at a constant temperature≥ 55°C, which reduces heat loss (15% energysavings) and prolongs the life of the system. Thisavoids the risk of large fluctuations in the hot watertemperature (from 55 - 70°C), heat loss and pre-mature aging.

> Points-of-use supplied at 50°C or more equate toan increased risk of scalding.

> Some regulations restrict the maximumtemperature at the hot water outlet to < 50°C.

Safety: All DELABIE mixers (thermostatic,electronic or time flow) which are used at thepoint-of-use are fitted with a maximumtemperature limiter, which can be adjusted by theinstaller.

Length for 3 Lcapacity

T

40°C

40°C

40°C

Electronic controls withautomatic duty flush

≥ 55°C

Situation 2: Circulating Loop with PREMIX Security and mixed water supplied by PREMIX Comfort

- PREMIX Comfort for MW supply at < 55°C.- Points-of-use without maximum temperaturelimitation.

NB: the volume of water between the PREMIXComfort and the point-of-use should notexceed 3 L.

T

T

BoilerHW 70°C

raise thetemperatureevery 24H

≥ 50°C

80%

20%

!

If the supply temperature is < 42°C, the maximum temperature limiter on the mixer at the point-of-use will be deactivated.

≥ 70°C ≤ 15°C≥ 55°C

WC : all equipment causing variations in pressure should be supplied upstream of the circulation loop.

≥ 55°C

≥ 55°C

Safety at the points-of-use:anti-scalding safety or maximumtemperature limiter

Mixer with maximum temperature limiter orindividual thermostatic mixing valve.

Mixer withmaximumtemperature limiteror indvidualthermostatic mixingvalve.

PremixSecurity

LEGEND: These diagrams are for guidelines only. Always check your drawings with a fluid or mechanical engineer.

BoilerHW >65°C

raise thetemperatureevery 24H

> 55°C

T

T

≥ 50°C

> 55°C

BoilerHW 70°C

raise thetemperatureevery 24H

≥ 55°C

NB : 3 litresmaximumafter PREMIX Comfort.

Premix Confort

!

≤ 15°C

42°C

37°C

PC

WC : all equipment causing variations in pressure should be supplied upstream of the circulation loop

WC : all equipment causing variations in pressure should be supplied upstream of the circulation loop

≥ 55°C

SPORTING Shower panels suppliedwith mixed water

Mixers supplied with mixedwater and cold water

PremixComfort Premix

Compact

PREMIXthermostatic,electronic

shower panel

≤ 15°C

≥ 55°C

≤ 15°C

Shower panels

Basin mixers

Electronicwashbasin

mixer

Chart of pressure losses: Dynamic pressure drop when operated under varying flow rates.

Reminder: Also check pipe work pressure losses (e.g. different floor levels, extended supply pipes, etc.).

The choice of PREMIX® thermostatic mixing valve depends upon the installation type, the frequency of use(coefficient), the number of points-of-use, and the dynamic water pressure upstream of the PREMIX®. To select the appropriate PREMIX® for an installation, it is necessary to calculate the probable need of mixed water.

1. Determining the COEFFICIENT OF SIMULTANEOUS USEIt depends on type of site and number of points of use.

• Normal or low frequency of simultaneous use:We recommend use of the following formula todetermine the simultaneity coefficient(x represents the number of points-of-use):

• High frequency of simultaneous use:Apply formula:

• Very high frequency of simultaneous use:Use coefficient 1 for 1 to 15 outlets.

2. Calculating the PROBABLE FLOW RATE for feeding each type of outletThe expected flow rate depends on operating flow rate for each type of outlet (refer to manufacturers data sheets for tap & valve flow rates)

3. Sizing the appropriate PREMIX taking into account the PROBABLE FLOW RATE and pressure loss:PREMIX

1. Select the PREMIX® size(3/4", 1", etc.) according to the totalprobable flow rate of the installation.

2. Check the PREMIX® pressure lossesHaving established the dynamic pressures atthe group thermostatic mixing valve inlets,and the required residual pressure forsupplying the installation, use the adjacentchart to select the correct size of PREMIX®

based on the associated pressure drop.

Example: for a 50 lpm probable flow rate,the PREMIX® 3/4" records a 2.4 bar pressureloss as opposed to 0.9 bar for the PREMIX® 1".

Note: For supply pressures at 3 bar(recommended), the pressure drop should notexceed 1 bar.

TOTAL GROSS FLOW RATE x simultaneity coefficient = total PROBABLE FLOW RATE of mixed water

Type of Installation Number of fittingsFlow rate Total gross flow rate

Washbasin

Shower

Basin, sink, shower, bidet

Bath

.... litres/min

.... litres/min

.... litres/min

.... litres/min

x ....

x ....

x ....

x ....

= ....

= ....

= ....

= ....

TOTAL GROSS FLOW RATE

Number of tapsand valves tobe connected

Sport centres, boarding schools,camp sites, etc.

Hospitals, hotels, offices, apartmentbuildings, community homes

COEFFICIENT OF SIMULTANEOUS USE

1 to 5

5 to 10

10 to 15

15 to 25

25 to 40

40 to 60

more than 60

1

1

0.6

0.5

0.4

0.3

0.2

1

0.5

0.3

0.3

0.2

0.15

0.1

x =

The above information is for guidance only. Specifiers and contractors must select thermostatic valves appropriate for the application and pipe sizes. This information is notcontractual and can not supersede the designer's specifications. Designers remain responsible for determining the best simultaneity coefficient and the PREMIX® sizes.

hot water cold water mixed water filternon-return valve stopcockT temperature probe circulating pump regulating valve

101

PREMIX®

100

PREMIX®

PREMIX SECURITY 55 3/4” 55 118 60 18 10 - 45 731052PREMIX SECURITY 90 1” 90 160 80 23 20 - 70 731053PREMIX SECURITY 140 1 1/4" 140 178 88 26 30 - 110 731054PREMIX SECURITY 190 1 1/2" 190 196 98 26 40 - 150 731055

L P

H

L P

H

PREMIX type 55, 90, 140 and 190

PREMIX type T2, T3, T4 and T5

> 2 sizes available to replace existing models on the market (standard swap).

Quick Choice Guide for PREMIX

up to 6up to 12up to 25up to 40

10 - 4520 - 7030 - 11040 - 150

Number oftaps/valves

Recommendedflow rate rangePREMIX

5590140190

3/4“1”

1 1/4"1 1/2"

Flow rateat 3 bar

Simultaneitycoefficient

11

0.5 - 0.70.4 - 0.6

Number oftaps/valves

SimultaneityCoefficient

10.30.150.1

PREMIX® ComfortGroup thermostatic mixing valve for mixed water supply adjustable from 30 - 42°C, featuringan interchangeable cartridge with automotive cell and adjustable maximum temperature limiter.- Non-return valves and filters are accessible from the exterior without removing the mechanism.- Thermal shocks can be undertaken without removing the mixer (override button on the control knob).

High simultaneous use: Sports Stadia, Swimming Pools, Boarding Schools, Campsites, etc.(DELABIE washbasins: 3 lpm - DELABIE showers: 6 lpm - Average use: 5 lpm)

Normal simultaneous use: Hospitals, Hotels, Offices, Community Housing, etc.(DELABIE washbasins: 3 lpm - DELABIE showers: 6 lpm - Sinks 12 lpm - Baths 20 lpm - Average use: 12 lpm).

up to 3up to 16up to 50up to 100

PREMIX SECURITY

Always install stopcocks on the hot and cold water inlets (see page 102).

PREMIX® SecurityGroup thermostatic mixing valve for hot water circulating loops adjustable from 46°C to 60°Cfeaturing an interchangeable cartridge with automotive cell. Non-return valves and filters areaccessible from the exterior without removing the mechanism. Thermal shocks can be undertakenwithout removing the mixer (override button on the control knob).> 15% energy savings: reduces heat losses (circulating loop 55°C / 70°C system without circulating loop).> Prolongs the life of the hot water system (HW at > 65°C leads to premature aging within the system.

PREMIX COMFORT * Flow rate at 3 bar pressure loss ** Number of showerss for guidelines only (see simultaneity co-efficient).

* Flow rate at 3 bar pressure loss ** Recommended flow rate range

TECHNICAL CHARACTERISTICS• Maximum hot water temperature: 85°C. • Maximum temperature limiter can be adjusted by the installer on the PREMIX Comfort model.• Min. differential between HW and MW: 15°C. Min. differential between HW and CW: 40°C.• Maximum difference in pressure at the inlets: 1 bar (recommended 0.5 bar).• Min/max pressure: 1 - 10 bar (recommended 1 - 5 bar).• MW outlet on the top, with CW inlet on the left and HW inlet on the right (red indicator for hotwater and blue indicator for cold water).

• For MW outlet at the bottom: reverse the positions of the blanking plug and the MW outlet.• Highly resistant chrome-plated DZR brass body.• Anti-scalding safety: 42°C max. for PREMIX Comfort, 55°C max for PREMIX Security.

Description Size Flow rate* Dimensions Recommended ReferenceBSP M lpm L H P flow rate**

PREMIX COMFORT 55 3/4” 55 118 60 18 6 731002PREMIX COMFORT 90 1” 90 160 80 23 12 731003PREMIX COMFORT 140 1 1/4" 140 178 88 26 25 731004PREMIX COMFORT 190 1 1/2" 190 196 98 26 40 731005

PREMIX COMFORT T2 3/4” 55 118 81 18 6 731200PREMIX COMFORT T3 1” 90 144 95 23 12 731300PREMIX COMFORT T4 1 1/4" 140 178 107 26 25 731400PREMIX COMFORT T5 1 1/2" 190 218 129 26 40 731500

Description Size Flow rate* Dimensions Number ReferenceBSP M lpm L H P taps/valves**

THESE PRODUCTS WILL WITHSTAND THERMAL AND CHEMICAL SHOCKS subject to compliance with current protocols

PREMIX COMPACT

PREMIX Comfort Recessed 792220

Thermostatic control for mixed water distribution, recessedbeneath a chrome-plated wall plate 160x220mm, with awaterproof recessing box.• Flow rate 35 lpm at 3 bar.• Adjustable temperature between 32-40°C, pre-set at 38°C.• Constant temperature: ±1.5° C between 34-40°C.• Anti-scalding safety up to 42°C.• Integrated non-return valves.

Technical characteristics:• Recessing depth adjustable from 10-30mm with integratedconnectors and stopcocks.

• Pre-set at 38°C (3 bar pressure for cold and hot water).• Range of adjustment on control knob: 32-40°C. • Hot water supply temperature: 55-85°C.• Cold water supply temperature: 5-20°C.• Minimum differential between cold and mixed water: 15°C.• Recommended pressure 1 - 5 bar.• Maximum pressure differential between hot and cold waterinlets: 1 bar.

PREMIX COMFORT RECESSED

1/2” 1/2”

1/2”

37 40

37

733015

3/4”

3/4”

3/4”

37 40

37

733020

PREMIX® CompactThermostatic control for mixed water distribution between 30-60°C.- Adjustable temperature between 30-60°C, can be locked by theinstaller.

- Anti-scalding safety and accuracy to ±1.5°C between 34 and 40°C.- Automatic hot water shut-off in case of cold water supply failure. - Minimum flow rate for operation: 5 lpm. - Integrated non-return valves. Thermal shocks can be easily undertaken.

• M1/2" for 2 - 7 valves* (KV 19 lpm for ∆P 1 bar)

rough cast finish with blue control cap 733015chrome-plated body and control cap 733016

• M3/4" for 2 - 10 valves* (KV 23 lpm for ∆P 1 bar)

rough cast finish with blue control cap 733020chrome-plated body and control cap 733021

* depending on the valve flow rate (NB: Tempomatic, ... at 3 lpm).

PREMIX® Compact is specially designed for installing directly onto the hot water supply pipe. If a circulating loop is installed, itwill maintain the hot water temperature up to the point-of-use,ensuring that anti-scalding regulations are met.

Thermal shock capability without a special lever (turn thehot water control cap to the maximum, overriding thetemperature limiter).

29

200

x 2

59

84

161

x 22

0

1/2”

16-30

3/4”

792220

THESE PRODUCTS WILL WITHSTAND THERMAL AND CHEMICAL SHOCKS subject to compliance with current protocols

733016

733021

Waterproof Recessing Box:> Prevents water entering the box from the outside, e.g.water streaming down the tiles.

> Water is drained by a small channel in the waterproof sealif there is condensation or a leak due to faulty installation.

> Quick installation and adjustable recessing depth from 10 - 30mm, stopcocks are integrated in the connectors.

> Vandal proof: hidden fixings and shockproof mechanism.

EM

EF EC

The following PREMIX® Comfort 3/4” repair options are available:- either by using a standard replacement kit,- or by using spare parts available in the Repair Kit section below.

743702

753702

753732

753735

753752

753755

753703

753704

RIGHT-ANGLED STOPCOCKS

Right-angled StopcocksChrome-plated ball valves with integrated filter and test point (toconnect pressure and temperature gauges).

• FF3/4" for PREMIX 3/4" 730802.2P• F3/4" F1" for PREMIX 1" 730803.2P• F1" F1 1/4" for PREMIX 1 1/4" 730804.2P

Thermostatic Cartridges for PREMIX® 3/4" for PREMIX model 730 (prior to 06/2008)Complete thermostatic cartridge for standard replacements.

• for 3/4" (ref. 730002 and 730200) 743702

PREMIX® 3/4 - 1 1/2" Repair Kit for PREMIX model 730 (prior to 06/2008)Spare parts for repairs to the thermostatic cartridge include:thermostatic cell(s), piston, washers and balancing spring.

• for 3/4" (ref. 730002 et 730200) 753702• for 1" (ref. 730003 et 730300) 753703• for 1 1/4" and 1 1/2" 753704(ref.730004 - 730005 - 730400 & 730500)

PREMIX® 3/4 - 1 1/2" Repair Kit for PREMIX model 731 (after 06/2008)Spare parts for repairs to the thermostatic cartridge include:thermostatic cell(s), piston, washers and balancing spring.

• ref. 731002, 731200, 731003, 731300 753732• ref. 731004, 731400, 731005, 731500 753735• ref. 731052, 731053 753752• ref. 731054, 731055 753755

CARTRIDGE / REPAIR KITS

PREMIX Compact Repair Kit Spare parts for repairs to the thermostatic cartridge include:thermostatic cell(s), piston, washers and balancing spring.

• ref. 733015, 733016, 733020, 733021 753733753733

103102

73080..2P

Maintenance & CommissioningStopcocks & Maintenance

� � �

To ensure the level of precision and optimal performance of the PREMIX thermostatic mixing valves, they should be installed in accordance with localwater bylaws and relevant legislation, and in accordance with the normal operating conditions.- Ensure that pipe diameters and length of supply pipes, the selected group mixing valve and circulating loop pump are appropriate for the installed outlets.- It is essential that non-return valves, regulating valves and isolating valves are installed in the correct positions. - The pipework must be thoroughly flushed, using a large flow rate, to ensure pipes are cleaned properly before commissioning.We strongly recommend installing filters at the water inlets, stopcocks and points for measuring pressure and/or temperature (see our control valveswith filters and flush outlets, see opposite).

Installation and commissioning of PREMIX should be undertaken by experienced, qualified professionals.

Commissioning and Maximum Temperature LimiterThe PREMIX Comfort is tested at the factory and calibrated to approx. 38° (pressure HW = CW = 3 bar). Once installed and flushed, the mixing valvemust be commissioned.

4. PREMIX Comfort is delivered with the maximum temperature limiter set at 40°C(the index ring set at letter A). To set the temperature to 42°, remove the redindex ring and position it at the second letter E. To limit the temperature to39°C, position the index ring to the letter D.

Thermal Shock without removing the cartridge, or any special equipmentTo activate a thermal shock:

• Using a small screw driver, press on the red button.• Turn the control knob towards the left through a 3/4-turn.• To return to the original temperature, turn the control knob to the right.

Push

Turn

Redindice

A in line withthe indicator

Locking screw

Stop at about 40°

Temperaturestop

3. Replace the control cap with the 38°C aligned with the marker on the body.The mixer can now be adjusted from 32° to 40°C.

1. Set the flow rate at 25% of the maximum flow rate. Measure the mixedwater temperature at one of the points-of-use.

2. To adjust the water temperature unscrew the locking screw and remove thecontrol knob. Turn the valve spindle to the right to lower the temperature and tothe left to increase it (30° of rotation corresponds to 1°C of temperature).

PREMIX type 3/4” and 1”

Preventive MaintenanceThe simple design of PREMIX® makes maintenance easy:1. Simple cartridge is accessible from the front without removing the

valve.2. Non-return valves are accessible from the exterior.

In order to maintain the reliability of PREMIX® and PREMIX Compact®,and to prevent the risk of Legionella, we recommend the followingannual service inspections:1. Non-return valves and filters: descale or replace worn parts.2. Interchangeable cartridge: descale or replace worn parts.3. Temperature commissioning. PREMIX type 11/4" and 1 1/2"

PREMIX Compact 1/2” and 3/4”

� � �

� Balancing spring� Thermostatic cell� Piston

��

�

Shut-off delay adjustment

Detection adjustment

Safety transformer 230/12Vca

Protective fuse

Control LED for checking good functioning

Pins connectors

Ref. 495445

PREMIX Electronic Shower Panelsbattery-operated by 6V Lithium battery, for exposed surfacemounting.Anodised aluminium shower panel with hidden fixing, featuring:- PREMIX single thermostatic mixing valve.- Infrared sensor detects user presence, powered by a 6V Lithiumbattery.

- Vandal proof, ROUND chrome-plated shower head with scale-proof nozzle and automatic flow rate regulator set at 6 lpm.

- M1/2" connections with integrated filters and non-return valves.

• with top inlets (incorporating stopcocks)inline stopcocks M1/2" 79240015mm for compression fittings 79240015

• with back inlets (without stopcocks)by flexibles hoses M1/2” 792410

Operation: Activates when user presence is detected.- Valve opens when a hand is detected within 4cm of the sensor.- The valve closes voluntarily (when the hand is detected for a second time)or automatically (after 1 minute = safety shut-off).

- Temperature control on the thermostatic valve.

Advantages:- Anti-Legionella: HW supply > 50°C up to the panel and duty flushprogrammed every 24 hours after the last use.(Duty flush for 1 minute prevents water stagnation and the developmentof bacteria in the pipework = risk prevention).

- Anti-scalding safety: immediate HW shut-off in case of CW supply failure. - Comfort: constant temperatures and precise temperature control.- 80% water savings: automatic shut-off and set flow rate.- Vandal proof and limited maintenance.

> We recommend installing a floor trap (see p. 91) and soap dish (see p. 88).

Water Controls with Duty FlushWater Controls with Duty Flush

Anti-bacterial duty flush:Automatic duty flush every 24 hours after the last use.

66

1044

0,811/2"

82

210

792400

66

1044

1/2"

210

792410

PREVENTING WATER STAGNATION

In healthcare facilities to overcome the risk of Legionella we recommend:Avoid stagnation and ensure that water circulates.

In systems without circulating loops (dead-legs, supply pipes for points-of-use that are usedinfrequently), stagnant water that is held at temperatures below 50°C can lead to the developmentand multiplication of the micro-organisms responsible for infections such as Legionella.

To avoid water stagnation, we recommend installing water controls with an automatic dutyflush at the end of each installation branch: they will automatically flush the final pipework (notin a circulating loop) to avoid any bacterial development.

T

PREMIX ELECTRONIC PANEL

Anti-bacterial duty flush (230/12V and battery-operated)Automatic duty flush (~ 45 seconds every 24 hours after the last use):avoids water stagnation and the development of bacteria in the pipework.

Flashing LED(battery power

check)

TestPiles

Mode Tempo Dist.

CP

LP

EVR M B

2 batteries 3 Vcc

Basin, shower,urinal operatingmode selector

Shut-off delayadjustment

Detection adjustment

Connectors

JumpersCP: short rangeLP: long range

All our electronic water controls are programmed with an automatic duty flush toavoid water stagnation in the pipework.

1 MULTI-FUNCTION 230/12V electronic control unit (Ref. 495445) is pre-set in the Standardmode:- Standard mode with automatic shut-off when hands are removed from sensor field and safetyshut-off after 45 seconds, in case the user forgets. - PROG n° 4: Voluntary Mode with shut-off.

Anti-bacterial duty flush Automatic duty flush (~ 45 seconds every 24 hours after the last use):avoids water stagnation and the development of bacteria in the pipework.

Voluntary mode (230/12V models): Voluntary closure by passing a hand in front ofthe sensor, or continuous flow for 30 minutes (specifically for surgical protocols, orto evacuate the pipes voluntarily).

2 MONO FUNCTION 230/12V electronic control unit (Ref. 495444RP)Standard mode, without the option to change the operating mode: automatic shut-off whenhands are removed from sensor field and safety shut-off after 45 seconds, in case there is anobject blocking the sensor.

3 Lithium 6V BATTERY-OPERATED control unit (Ref. 495446) delivered in standard mode.Standard mode closes automatically when hands are removed from sensor field and self-closing safety closure after 45 seconds flow in case the user forgets to shut-off the tap.

Ref. 495446

Average life of batteries : 350,000 uses (check LED)Adjustable detection length: ~ 8 to 25cm (basin)

* For illustration only based on tests undertaken in thelaboratory. Battery life will depend on usage, quality ofbatteries and regular maintenance of mixers and taps.

Adjustable detection length: ~ 8 to 25cm (basin)

4 Electronic Model with integrated battery (Ref. 492446 or 490446)Standard mode, without the option to change the operating mode: automatic shut-off whenhands are removed from sensor field and safety shut-off after 45 seconds, in case the user forgets.

Electronic Mixer or Tap H.125 L.145Ref.s 494... & 444... (see page 37)

• Mains supply 230/12V (495444RP)• 6V battery-operated (495446)

Electronic Mixer or Tap H.380 L.200Ref.s 495… or 445… (see page 38)

• Mains supply 230/12V (495445)• 6V battery-operated (495446)

Electronic Mixer or Tap H.110 L.140Ref.s 378MCH & 378015 (see page 37)

• Mains supply 230/12V (495444RP)

Electronic Tap L.185 for panels 150mmRef 441157 (see page 41)

• Mains supply 230/12V (495444RP)

Electronic Mixer or Tap H.100 L.115Ref.s 490006 & 440006 (see page 36)

• 6V battery-operated (integrated electronicunit 490446).

Wall-mounted electronic tap L.190Ref 443006 (see page 40)

• 6V battery-operated (integrated electronicunit 492446).

Wall-mounted SOAP DISHInvisible fixings.

• matt chrome-plated ABS 710500• bright chrome-plated ABS 710501

160

41

62

710500

710501

104 105

Code Wheel

Delabie BB792valve certified TMV3BC 199/0906