72/73 74 Thermostatic mixing valves contents Regulation notices

72/73 74 Thermostatic mixing valves contents Regulation notices
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Thermostatic mixing valves contents
Regulation notices
72/73
• Control of temperature limits
• PREMIX installation advice
General characteristics
74
• Comfort, anti-scalding security, solution against Legionella infection
Technical advantages
75
PREMIX® Selection guidance & range 76/77
• Coefficient of simultaneous use, probable flow rate and PREMIX®
• Guidance for a quick selection, thermostatic valves and isolating valves
Maintenance
78
• Thermostatic cartridges for PREMIX® 3/4“ and 1“
• Repairs kits for PREMIX® 3/4“ and 1“1/2
Installation and commissioning
79
• Installation advice
• Temperature commissioning and limitation
• Locking the temperature control
PREMIX® compact
80
• Sanitary thermostat for washbasins
ECONOMIX & HYDROMIX range 81/83
• Sanitary thermostat for washbasins, shower and bidets in higher risk
and Healthcare applications
ESBE ES range
84/85
• Sanitary thermostat for washbasins, shower and bidets in higher risk
and Healthcare applications
TMR and TM range
86/88
• TMR 15 and 22: Sanitary thermostat for washbasins
• TM 25 and 28: Group thermostat for showers and for hand washing
About Legionella
• What is legionella disease ?
• TMV solution
70
89
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Thermostatic Mixing Valves
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Current regulations
Temperature control limits
of hot and cold water distribution networks in public and commercial places has to take into account:
- minimum temperatures to avoid legionella development
- maximum hot water temperatures to prevent risk of scalding
Whilst there is a continuing objective to harmonise standards across the European community, there remains significant differences.
UK Legislation:
• Scalding can occur in many situations in all types of buildings, both public and private.
Scalds are wholly avoidable and the degree of potential risk depends on the actual temperature and volume of hot water
delivered and the contact time.
NHS Estates Guidance Note - 'safe' hot water and surface temperatures provide useful guideline figures.
• Hot water storage: hot water temperature should be stored at or above 60°C and distributed to the point of use
control (TMV) at 55°C or above.
• Cold water supply: cold water temperatures must not exceed 20°C.
• Final distribution pipes from the thermostatic mixing valve to the points of use must be as short as practical and in
high risk applications NOT more than 2 metres. In lower risk application the maximum length is 5 meters, with water
discharged within 30 seconds.
• Recommended maximum outlet temperatures at point of use :
- Bath Fill (see Note 1) 46°C
- Wash basins
41°C
- Showers
43°C
- Bidet
38°C
Hot water temperatures should never exceed 46°C.
Whilst there is a continuing objective to harmonise standards across the European community, there remains significant differences.
1. The recent regulations agree that the best way to limit legionella bacteria development is to produce and deliver hot water
at a higher temperature.
2. The scalding risk in public and commercial places therefore grows significantly:
- at 55°C: third-degree burn in 100 seconds. Healthy adult skin will suffer burns in 30 seconds.
- at 60°C: third-degree burn in 5 seconds on average (shorter duration for a child - at 70°C: less than ONE second.)
Thermostatic mixing valves applications:
- at the boiler outlet to lower the temperature of the hot water distribution
- upstream and as close as possible of points of use to avoid any risk of scalding (i.e. 38-46°C)
THE PREMIX SOLUTION
PREMIX thermostatic mixing valves ensure the delivery of blended water at a constant temperature whatever the
variations of pressure, flow rate and temperature in the installation.
Innovative and benefiting from automotive thermo-reactive cell technology, PREMIX provides precise temperature control
with unequalled advantages.
The common characteristic of PREMIX thermostatic mixing valves is to provide ANTI-SCALDING SAFETY:
- Immediate hot water shut-off in case of cold supply failure (HW/MW>10°C)
- Maximum temperature limitation at the outlet by adjustable locking ring
• PREMIX Securit: for hot water distribution loops at 55°C.
Install after the boiler outlet (55 to 190 litre/min, adjustable from 44 to 58°C.):
- Prevents risk of scalding by lowering hot water temperature at the boiler outlet.
- Anticipates and corrects the temperature fluctuations of the boiler(s).
- Generates significant energy savings: lowers heat losses with a 55°C circulating loop.
- Limits the scale deposit into pipes, circulation systems, valves, non-return valves, ...
PREMIX Securit
• PREMIX Comfort: for 1 to 68 taps, mixers or valves supply
Group control (55 to 190 litre/min. adjustable from 30 to 44°C.):
- Prevents risk of scalding by lowering hot water temperature at points of use.
- Ensures a constant temperature at points of use (regulates fluctuations).
• PREMIX Compact: for 1 to 5 taps, mixers or valves supply
PREMIX Comfort
Point of use control (19 to 23 litre/min. adjustable from 30 to 60°C.):
- Prevents risk of scalding by lowering hot water temperature at points of use.
- Ensures a constant temperature at points of use (regulates fluctuations).
72
In addition Douglas Delabie offers an extensive range of Thermostatic Mixing Valve solutions for point of
use and group control applications
PREMIX Compact
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Installation technical advice
Situation 1: CIRCULATING LOOP with mixed water delivered to the points of use
The user can not adjust temperature
at points of use (taps):
38-41°C
- PREMIX Securit for hot water circulating loop
- PREMIX Comfort to supply points of use
Reminder:
Water volume between TMV PREMIX Comfort
and the point of use should not exceed 3 litre
Material / Dimension
Copper
Length of capacity
of 3 litres
18x1
15 m
Galvanized steel DN 15
15 m
PEX Plastic
18 x2,5
23 m
PP Plastic
20 x1,9
14 m
55°C
38°C
70°C
Boiler
HW: 60-65°C
raising the
temperature
every 24 h
Reminder :
maximum of 3 litres
after the PREMIX
that means 15 m of
copper ø18x1
23 m PEX ø18x2,5, ...
80%
20%
≥ 50°C
T
38°C
Pipe length / capacity ratio
(Capacity = Interior section x Length)
Situation 2: CIRCULATING LOOP with hot and cold water delivered to the points of use
The user has local temperature control at the
point of use (mixer):
- PREMIX Securit for hot water circulating loop
- PREMIX Comfort to supply points of use
Hot water at 41-44°C is delivered to points of use,
with users having local temperature adjustment
With such a temperature there is risk of scalding.
Solution : DOUGLAS DELABIE mixers (self closing,
or electronics) provide an effective water saving
solution and are equipped with:
- maximum temperature limitation adjustable
by the installer
- non-return valves
55°C
41-44°C
70°C
T
Boiler
HW: 60-65°C
raising the
temperature
every 24 h
80%
≥ 50°C
T
20%
41-44°C
Cold water temperature ≤ 20°C.
Solution : DOUGLAS DELABIE electronic mixers and
taps with automatic periodic rinsing program
every 24 hours avoiding rise in cold water
temperature to ambient temperature
Situation 3: Hot water supply network WITHOUT CIRCULATING LOOP
In water supply networks without circulating loops,
stagnating water at a temperature below 50 °C
can cause legionella bacteria development, ...
70°C
41-44°C
Solution:
- PREMIX Comfort to lower temperature before
the point of use.
- DOUGLAS DELABIE electronic mixers and taps
with automatic periodic rinsing program
to install at least at the end of each supply branch,
in order to avoid any bacteria proliferation:
Every 24 hours after the last use, those valves will
automatically rinse out pipes during 45 sec.
41-44°C
Boiler
HW: 60-65°C
raising the
temperature
every 24 h
42°C
TMV3
DOUGLAS DELABIE electronic mixers or taps
with automatic periodic rinsing program
hot water
circulating pump
cold water
T thermometer
mixed water
filter
check valve
≥ 50°C
T
regulating valve
isolating valve
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General characteristics
Designed for commercial applications, the PREMIX® group thermostatic
mixing valve delivers a highly stable blend of water at the desired
temperature. It enables simultaneous supply to a large number of
sanitary points of use (showers, washbasins…)
Extremely fast to react, it stabilizes the desired temperature setting
even with variations of pressure, flow rate and temperature in
the sanitary system.
Innovative, it benefits from the advantages of PREMIX®
technology (automotive cell thermo-reactive) with highly
effective performance in comparison with current technologies
(bi-metal, double pilots, etc…).
COMFORT
The group thermostatic mixer PREMIX® ensures an absolutely stable temperature whatever
the variations of pressure and flow rate in the installation.
PREMIX® anticipates and corrects fluctuations in pressure and temperature to ensure
user's comfort and safety.
ANTI-SCALDING SECURITY
• Automatic security ensures an immediate hot water shut off in case of cold supply failure.
• Temperature limitation: a locking ring limits the maximum temperature at the outlet (security
device). The temperature control is factory set at 40°C and the installer can then lock the set
temperature to prevent unauthorised adjustment by the users.
PREMIX® provides security against scalding.
Correlation between temperature and risk of scalding:
• At 60°C, partial thickness burns will occur within 5 sec. for an adult, (1 to 2 sec. for a child)
• At 55°C, partial thickness burns will occur within about 30 sec.
Water temperatures at point of use must never exceed 46°C.
Preventive and permanent SOLUTION AGAINST
LEGIONELLA INFECTION
Legionella bacteria are naturally occurring organisms and are present in many water systems
and will multiply in stored water at temperatures between 23°C and 47°C. They remain
dormant at temperatures below 20°C, but will remain a potential threat in the system. They
can be destroyed in 2 hours at 50°C and in 2 minutes at 60°C.
Curative methods such as thermal shocks with hot water above 70°C or use of chlorine
remain doubtful, restricting and risky.
The preventive solution, according HSE ACOP Document, consists of maintaining hot
water above 55°C, permanently, in any point of supply pipes, in order to prevent any risk of
legionella bacteria proliferation:
1 • Hot water produced and stored at or over 60°C
2 • Circulating loop or trace heating element, to maintain hot water temperature
permanently above 55°C at any point of the system. (circulating pump, ...)
3 • Insulating the cold water pipes to maintain temperature below 20°C.
4 • Hot and cold water supplies have to be mixed as close as possible from points of use,
with one or more Thermostatic Mixing Valves (PREMIX) per distribution branch.
To prevent risks of scalding, water temperature delivered at points of use must be
maintained below 46°C.
The combination of Group Thermostatic Mixing Valve with individual mixers is an optimal
solution. Electronic timed flow or conventional mixers must be equipped with a temperature
limiting device.
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Technical advantages
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 in the mechanism reduces the requirement for maintenance. The PREMIX® valve offers a real
competitive advantage.
1. Reliability and longevity
The automotive thermostatic cell of the PREMIX® is located in the heart of the mixing
chamber. This position enables superior sensitivity to hot and cold flows and water
pressures. It optimises the regulation of both hot and cold water supplies.
The PREMIX® range is covered by a 10 year warranty against any manufacturing
defects.
2. Precise temperature control
PREMIX® valves are factory set to a nominal temperature of 40°C ± 1°.
They are precise to one degree in the recommended range of flow.
The control knob enables simple temperature adjustment.
The control knob can be limited at the desired temperature in a tamperproof position.
3. Low pressure losses
The PREMIX® mechanism (without hydraulic relays) enables direct circulation of water
between inlets and outlet. This reduces the pressure loss and maintains flow rate to the
outlet to ensure excellent performance at low, medium and high pressures.
WA R RA
- 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 cold-water failure test.
10
YEARS
NTY •
NTY •
4. Minimum maintenance
WA R RA
5. Easy and low cost maintenance
- Simple and interchangeable cartridge-mechanism accessible from the front without
having to remove the whole mixing valve.
- Filters and non return valves are accessible from the exterior without having to remove
the mechanism.
6. Comprehensive range at competitive prices
PREMIX® 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 and 190 litres per minute.
Optional isolating ball valves with test points and strainers are available.
OPERATION
The thermostatic element submerged into the heart of the mixing chamber
reacts rapidly to every temperature variation. Automotive, it expands or contracts
with changes in flow rate or pressure to control a sliding valve that opens and
closes the hot and cold water inlet ports or vice versa.
Control knob
Temperature stop
• As the mixed water temperature rises, the thermostatic element expands and
pushes the sliding valve 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 is pushed upwards by the balancing spring. It immediately restricts
the passage of cold water and opens the inlet of hot water.
• In case of a failure in cold water supply, the thermostatic element expands
instantly and the sliding valve closes the hot inlet. The outflow is stopped
instantaneously preventing the user from scalds and thermal shock.
Sliding
valve
Thermostatic element
Cold water
Check valve
Hot water
Mixing chamber
Check valve
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PREMIX® selection guidance
The PREMIX® sizing depends on application, frequency of use (coefficient), number of water outlets fed and running
water pressure upstream of the PREMIX®.
To select the suitable version for an installation, it is necessary to calculate the probable need of mixed water.
1. Determining the COEFFICIENT OF SIMULTANEOUS USE
It depends on type of site and number of points of use.
SIMULTANEITY COEFFICIENT
Number of taps
and valves to Sport centres, boarding schools, Hospitals, hotels, offices, apartment
be connected camp sites, swimming pools, etc… buildings, community homes
1 to 5
1
1
5 to 10
1
0,5
10 to 15
0,6
0,3
15 to 25
0,5
0,3
25 to 40
0,4
0,2
40 to 60
0,3
0,15
more than 60
0,2
0,1
• Normal or low frequency of simultaneous use:
We recommend use of the following formula to
determine the simultaneity coefficient
(x represents the number of same or
different outlets):
• High frequency of simultaneous use:
Apply formula:
• Very high frequency of simultaneous use:
Use coefficient 1 for 1 to 15 outlets instead of 0,6.
2. Calculating the PROBABLE FLOW RATE for feeding each type of outlet
The expected flow rate depends on operating flow rate for each type of outlet (refer to manufacturers data sheets for tap & valve flow rates)
Types of sanitary outlets
Basin Taps
Flow rate
.... litre/min
Number of fittings Total gross flow rate
= ....
x ....
Shower Valves
.... litre/min
x ....
= ....
Washbasin, sink, shower
.... litre/min
x ....
= ....
Bath
.... litre/min
x ....
= ....
Total GROSS FLOW RATE
TOTAL GROSS FLOW RATE x simultaneity coefficient = total PROBABLE FLOW RATE of mixed water
x
=
3. Sizing the appropriate PREMIX®:
PREMIX
1. Select the PREMIX® size
In according to the probable flow rate
requirement for the installation.
2. Check the PREMIX® pressure losses
Having established the dynamic pressures at
the group thermostatic valve inlets and the
residual pressure requirement to feed the
installation, use this chart to select the
suitable size of PREMIX® based on the
pressure drop through it.
Example: for a 50 l/min expected flow rate, the
PREMIX® 3/4” records 2,4 bar pressure loss as
opposed to 0,9 bar for the PREMIX® 1”.
Chart of pressure losses: Dynamic pressure drop when operated under varying flow rates.
Reminder: Also check pipe work pressure losses (eg stages, extended supply pipes, etc…).
See chapter “Sanitary technical data”.
76
The above information is for guidance only. Specifiers and contractors must select thermostatic valves appropriate for the
application and pipe sizes. This information is not contractual and can not supersede the designer 's specifications.
Designers remain responsible for determining the best simultaneity coefficient and the PREMIX® sizes.
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PREMIX® range
TECHNICAL CHARACTERISTICS
• Maximum hot water temperature: 85°C.
• Maximum temperature lock.
• Minimum differential between hot and mixed water: 10°C minimum.
• Min/max pressure: 1 to 10 bar (recommanded pressure 1 to 5 bar).
• Pressure differential between hot and cold inlet: 3 bar max. (recommanded 1 bar).
• Mixed water outlet on the top, cold water inlet left and hot right. (red ring hot and blue cold).
• Bottom outlet: reverse positions of the bottom blanking plug and mixed water outlet.
• Highly resistant chrome plated bronze body.
H
L
P
PREMIX® type 55, 90, 140 and 190
GUIDANCE FOR A QUICK SELECTION
PREMIX® Flow rate Recommended Number of Simultaneity
(inches) at 3 bar operating range taps&valves Coefficient
3/4“
1”
1”1/4
1”1/2
55
90
140
190
up to 4
up to 11
up to 25
up to 40
10 - 45
20 - 70
30 - 110
40 - 150
1
1
0,5 to 0,7
0,4 to 0,6
Number of
taps&valves
Simultaneity
Coefficient
up to 6
up to 16
up to 50
up to 68
1
0,4
0,2
0,12
H
High and simultaneous frequency: stadiums, swimming pools, boarding schools.,
camp sites: timed flow basin taps and shower valves: 8 litre/min).
Normal simultaneous frequency: hospitals, hotels, offices, apartment buildings,
community homes: Washbasins, sinks, showers: 12 litre/min – Baths: 20 litre/min –
Average base used: 14 litre/min
L
P
PREMIX® type T2, T3, T4 and T5
PREMIX® Comfort
Group thermostatic mixing valve for mixed water supply adjustable from 30°C to 44°C with
interchangeable cartridge with automotive cell, and lockable and adjustable maximum temperature
limitation. Non-return valves and filters accessible from the exterior without removing mechanism.
Thermal shock possible without dismounting mechanism.
Every PREMIX® type is available in two dimensions for ease of replacement
Description
Size Flow rate* Dimensions
BSP M l/mn L
H
P
Number of
taps/valves
Reference
PREMIX® COMFORT 55 3/4”
55
118
60
18
6
731002
PREMIX® COMFORT 90
90
160
80
23
11
731003
PREMIX® COMFORT 140 1”1/4 140 178
88
26
25
731004
PREMIX COMFORT 190 1”1/2 190 196
98
26
40
731005
PREMIX® COMFORT T2 3/4”
55
118
81
18
6
731200
PREMIX® COMFORT T3
90
144
95
23
11
731300
PREMIX COMFORT T4 1”1/4 140 178
107
26
25
731400
PREMIX® COMFORT T5 1”1/2 190 218
129
26
40
731500
1”
®
1”
®
PREMIX® COMFORT
PREMIX® Securit
Group thermostatic mixing valve for hot water circulating loops, adjustable from 44°C to 58°C.
with interchangeable cartridge with automotive cell, lockable and adjustable maximum temperature
limitation. Non-return valves and filters accessible from the exterior without removing mechanism.
Description
Size Flow rate Dimensions Recommended
BSP M l/mn L
H
P operating range
Reference
PREMIX® SECURIT 55
3/4”
55
118
60
18
10 - 45
731052
PREMIX® SECURIT 90
1”
90
160
80
23
20 -70
731053
PREMIX SECURIT 140 1”1/4 140 178
88
26
30 -110
731054
PREMIX® SECURIT 190 1”1/2 190 196
98
26
40 - 150
731055
®
PREMIX® SECURIT
Always use with isolating ball valves on hot and cold water inlets (see next page).
ALL THESE PRODUCTS ARE RESISTANT TO THERMAL AND CHEMICAL SHOCKS subject to current protocols
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Isolating valves & maintenance
• 3/4" BSP(F)
• 3/4" F1" BSP(F)
• 1"F1"1/4 BSP(F)
for PREMIX 3/4"
for PREMIX 1"
for PREMIX 1-1/4"
730802.2P
730803.2P
730804.2P
BSPF F
H
L
ANGLED ISOLATING VALVES
Chrome plated ball valves, with easily removable strainers and test
points (to connect pressure and temperature gauges)
E
Isolating valves
THERMOSTATIC CARTRIDGES FOR PREMIX® 3/4" & 1"
Complete thermostatic cartridges for standard replacements
For PREMIX COMFORT type 730 (before 01/2008)
• for 3/4" (ref. 730002 & 730200)
• for 1" (ref. 730003 & 730300)
743702
743703
743702
PREMIX® 3/4” and 1” types uses a sole automotive thermostat cell can be
renovated either by using a standard replacement complete cartridge or by
using spare parts available in a “repair kit”.
743703
REPAIR KIT FOR PREMIX® 3/4 to 1-1/2"
Spare parts for the repair of cartridge-mechanisms include:
thermostatic cell, piston, balancing spring, and rubber ring.
For PREMIX COMFORT type 731
• for 3/4" (ref. 731002 & 731200)
753732
• for 1" (ref. 731003 & 731300)
753732
• for 1"1/4 & 1"1/2
753735
(ref.731004 - 731005 - 731400 & 731500)
For PREMIX COMFORT type 730 (before 01/2008)
• for 3/4" (ref. 730002 & 730200)
• for 1" (ref. 730003 & 730300)
• for 1"1/4 & 1"1/2
(ref.730004 - 730005 - 730400 & 730500)
For PREMIX SECURIT type 731
• for 3/4"& 1" (ref. 731052 & 731053)
• for 1"1/4 & 1"1/2
(ref.731054 - 731055)
Cartridge / Repair kit
The simplicity of PREMIX® eases maintenance:
753702
753703
753704
753702
753703
753704
753752
753755
PREVENTIVE MAINTENANCE: In order to maintain PREMIX® reliability we recommend the
following annual service inspection:
1. Simple and accessible cartridge from the
front without removing the valve.
2. Accessible check valves.
1. Check valves and filters: descale or replace worn parts.
2. Interchangeable cartridge: descale or replace worn parts.
3. Temperature commissioning.
PREMIX® type 1”1/4 and 1”1/2
PREMIX® type 3/4” and 1”
Sliding valve
Balancing spring
Thermostat cell
ALL THESE PRODUCTS ARE RESISTANT TO THERMAL AND CHEMICAL SHOCKS subject to current protocols
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Installation - Commissioning
INSTALLATION:
For PREMIX®‘s optimum levels of precision and performance, the installation must comply with local water bylaws and relevent legislation
and observe the normal operating conditions stated on page 75:
• Ensure that pipe diameter and length of supply pipes, selected group mixing valve, and circulating loop pump are appropriate for the installed
outlets.
• Ensure that check valves, regulating valves and isolating valves are installed in the correct positions.
• All pipes must be thoroughly flushed out prior to commissioning.
Isolating valves, strainers and test points MUST be installed upstream from the PREMIX® inlets
(see our angled isolating valves on page 75).
The installation of a group thermostatic mixing valve should be carried out by qualified professionals.
TEMPERATURE COMMISSIONING AND LIMITATION
Every single PREMIX® COMFORT is factory tested, set at 38°C (CW = HW = 3 bar) and supplied ready for installation.
Once the installation is completed and flushed thoroughly, the group mixing valve must be commissioned on-site commencing with measuring
the temperature at the point of use.
1. Run mixed water from approximately 25% of points of use at maximum flow.
Measure the mixed water temperature at one outlet.
Stop at
about 40°
2. To adjust the mixed water temperature: remove the control knob,
retained by a locking screw, rotate the spindle to the right to reduce the
temperature and to the left to increase it a rotation of 30° corresponds
to one temperature degree.
Temperature
stop
A in line with
the indicator
3. Repositioning the control knob with 38°C value in line with the
indicator on the engraved chrome body. The thermostatic mixer can
now be set from 30 to 44°C.
Locking
screw
4. The PREMIX is delivered with the temperature stop at 40°C (collar on the
letter A).
• To limit at 42°C, remove the red stop plate and place it behind the letter
E in line with the indicator on the engraved chrome body.
• To limit at 39°C, place the stop plate on the letter D.
THERMAL SHOCK without dismounting the cartridge
Push
To make a thermal shock:
1. Press with a small screwdriver on the red button
2. Turn the control knob 3/4 turn to the left.
Red
indice
Turn
3. To return to the initial position, turn the control knob back to the right.
IMPORTANT:
Thermal shock should only be carried out after ensuring that users are not at risk. A risk
assessment should be carried out and method statement prepared and approved.
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®
PREMIX compact
PREMIX® Compact
Thermostatic Mixing Valve for mixed water distribution,
to be installed under washbasin or trough sinks
- Temperature range 30 °C to 60 °C, lockable
by the installer. Precision ±1,5°C between 35 and 45°C.
- Anti-scalding security: automatic “anti-scald” hot water shut off
in case of cold water supply failure
- Integrated non-return valves
1/2”BSP(M)
733 015
• 1/2" BSP(M) for 1 to 2 taps (KV 19 litre/min. for ∆P 1 bar)
rough cast body
polished chrome finish
37
MW
1/2”BSP(M)
37
1/2”BSP(M)
HW
40
CW
733015
733016
• 3/4" BSP(M) for 1 to 5 taps (KV 23 litre/min. for ∆P 1 bar)
733020
733021
MW
37
rough cast body
polished chrome finish
3/4”BSP(M)
733 020
3/4”BSP M)
37
3/4”BSP(M)
HW
40
CW
PREMIX® Compact
TECHNICAL CHARACTERISTICS
FLOW RATES: Pressure drop curve
50
38
20
10
26
23
15
13
0,5
41 733015
37
32
32
30
733020
50
45
40
Flow rate (l./mn.)
• Operating pressure: 1 to 5 bar
Supplies to be balanced (maximum difference 1 bar)
• Anti-scalding safety:
Minimum temperature differential hot/mixed water: Td 15°C. min.
(Hot supply temperature: 85°C maximum)
• Stable mixed temperature: +/- 1,5°C. from 35 to 45°C
Temperature setting range: 30 to 60°C.
Pre-set temperature: 38°C.
• Flow rate under 1 bar pressure drop:
ref. 733015 and 733016 - 19 l/min
ref. 733020 and 733021 - 23 l/min
19
1
2
Pressure drop (bar)
3
4
p
i
5
b
Installation examples
Filter
CW
EF HW
EC
Non-return valve
MW
EM
MW
Thermostat cell
Temperature
adjustment
CW HW
ALL THESE PRODUCTS ARE RESISTANT TO THERMAL AND CHEMICAL SHOCKS subject to current protocols
80
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TMV solution
Temperature control limits
of hot and cold water distribution networks in public and commercial places has to take into account:
- minimum temperatures to avoid legionella development
- maximum hot water temperatures to prevent risk of scalding
Whilst there is a continuing objective to harmonise standards across the European community, there remains significant differences.
UK Legislation:
• Scalding can occur in many situations in all types of buildings, both public and private.
Scalds are wholly avoidable and the degree of potential risk depends on the actual temperature and volume of hot water
delivered and the contact time.
NHS Estates Guidance Note - 'safe' hot water and surface temperatures provide useful guideline figures.
• Hot water storage: hot water temperature should be stored at or above 60°C and distributed to the point of use
control (TMV) at 55°C or above.
• Cold water supply: cold water temperatures must not exceed 20°C.
• Final distribution pipes from the thermostatic mixing valve to the points of use must be as short as practical and in
high risk applications NOT more than 2 metres. In lower risk application the maximum length is 5 meters, with water
discharged within 30 seconds.
• Recommended maximum outlet temperatures at point of use :
- Bath Fill (see Note 1) 46°C
- Wash basins
41°C
- Showers
43°C
- Bidet
38°C
Hot water temperatures should never exceed 46°C.
Whilst there is a continuing objective to harmonise standards across the European community, there remains significant differences.
1. The recent regulations agree that the best way to limit legionella bacteria development is to produce and deliver hot water
at a higher temperature.
2. The scalding risk in public and commercial places therefore grows significantly:
- at 55°C: third-degree burn in 100 seconds. Healthy adult skin will suffer burns in 30 seconds.
- at 60°C: third-degree burn in 5 seconds on average (shorter duration for a child - at 70°C: less than ONE second.)
Thermostatic mixing valves applications:
- at the boiler outlet to lower the temperature of the hot water distribution
- upstream and as close as possible of points of use to avoid any risk of scalding (i.e. 38-46°C)
THE TMV’s SOLUTION
The TMV thermostatic mixing valves ensure the delivery of blended water at a constant temperature whatever the variations of
pressure, flow rate and temperature in the installation.
The introduction by NHS Estates of the Model Engineering Specification D08 and the BuildCert TMV3 Scheme requires that TMVs
installed in the high-risk sector, such as hospital and healthcare, care homes for the young and elderly, deliver precise temperature
control (preventing scalding) and are safer and easier to maintain.
For lower risk applications, such as in housing association installations, manufacturers introduced a new TMV2 Scheme, also
administered by BuildCert.
Both schemes guarantee that products are independently tested and certified to conform to a rigorous set of performance and
endurance criteria.
The common characteristic of TMV thermostatic mixing valves is to provide the ANTI-SCALDING SAFETY:
- Immediate hot water shut-off in case of cold supply failure
- Maximum temperature limitation at the outlet
• ECONOMIX
& HYDROMIX
- Prevents risks of scalding in the high-risk sector by lowering hot water temperature at points of use.
- Ensures a constant temperature at points of use (regulates fluctuations).
The Hydromix 15/3 and Economix 15/3 are licensed for healthcare use under HP/LP-B, HP/LP-S, HP/LP-W.
The Hydromix 22/3 and Economix 22/3 are licensed for use under HP-T44.
Hydromix 15/3 Combi
• ESBE ES
- Prevents risks of scalding in the high-risk sector by lowering hot water temperature at points of use.
- Ensures a constant temperature at points of use (regulates fluctuations).
The ESBE ES Range: TMV3 approval will be available from launch.
ESBE ES Standard
• TMR
- Prevents risks of scalding by lowering hot water temperature at points of use.
- Ensures a constant temperature at points of use (regulates fluctuations).
The TMR are designed for low risk applications, temperature range 30°C to 60°C
TMR22 Standard
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ECONOMIX & HYDROMIX
Description
ECONOMIX & HYDROMIX Thermostatic Mixing
Valves are licensed for use with wash hand
basins, showers and bidets in higher risk and
Healthcare applications under the requirements
of the NHS Estates D08 specification.
• Economix & Hydromix thermostatic mixing
valves are available in standard and combi
formats for 15 and 22mm.
• Economix & Hydromix Combi versions are
supplied complete with 4 in 1 angle inlet
connectors incorporating stainless steel mesh
strainers, non return valves, 1/4" BSP pressure
tapping point and 1/4 turn lever ball valves.
• Body and valve in DZR brass, chrome plate
finish, element in copper, non return valve in
hostaform plastic and top cover in ABS plastic.
• 3 years warranty
Advantages
Applications
Economix & Hydromix thermostatic mixing
valves are ideal for reducing temperatures in
any situation where normal hot water at 60°C
may accidentally scald and cause serious burns.
Typical TMV
“T” pattern
Economix 15/3
Used in showers, basins, bidets and baths, they
ensure washing safety in schools, sports
centres, factories, prisons, and many other
venues.
“T” pattern
Hydromix 15/3 Combi
Group mixing valve - Basin mixers
Hot
• Comfort: The Economix and Hydromix
thermostatic mixing valves ensure an
absolutely stable temperature whatever the
variations of pressure and flow-rate in the
installation.
• Anti-scalding security:
- Automatic security: ensures an immediate
hot water shut off in case of cold supply
failure.
- Temperature limitation: Maximum water
temperature is factory set at 43°C. TMV’s
should be installed and commissioned in line
with installation and maintenance
instructions.
Designated applications
The Hydromix 15/3 and Economix 15/3 are
licensed for healthcare use under the following
requirements :
- HP/LP-B: High / low pressure bidet
- HP/LP-S: High / low pressure shower
- HP/LP-W: High / Low pressure wash basin
The Hydromix 22/3 and Economix 22/3 are
licensed for use under the following
requirement:
- HP-T44: High pressure bath fill up to 44°C
Cold
Capacity chart
70.0
Flow L/min
60.0
Technical characteristics
BuildCert Approved applications
Temperature stability
Recommended pressure
Hot water supply
Cold water supply
Temperature differential
Td CW failsafe
Tested and certified for Healthcare applications:
• HP/LP-B, HP/LP-S, HP/LP-W and HP-T44.
• Approved to NHS Estate DO8 specification.
no. ETC/BC 111/0105 for Economix
thermostatic mixing valves and no.
ETC/BC 332/0108 for Hydromix thermostatic
mixing valves.
• WRAS listed no. 050611 for Economix
thermostatic mixing valves and no. 0710090
for Hydromix thermostatic mixing valves
: +/- 1°C
: 0.2 - 5.0 bar
: 55 - 85°C
: 5 - 20°C
: 10°C
50.0
40.0
Connections
Kv = 1.64
30.0
20.0
10.0
Bar
0.0
0
82
1
2
3
4
5
Hydromix 15/3: 15mm Compression
Hydromix 22/3: 22mm Compression
The use of Keysafe isolating ball valve
strainers are recommended with the
standard versions.
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ECONOMIX & HYDROMIX ranges TMV
ECONOMIX Combi Thermostatic Mixing Valve
A
54
75
HOT
COLD
TMV3 “T” pattern valve in Combi formats for 15 mm and
22 mm.
ECONOMIX Combi are supplied complete with 4 in 1 angle lever
ball valves with stainless steel mesh strainers, non return valves,
1/4’’BSP pressure tapping point and 1/4 turn lever ball valves.
Chrome finish.
Approved to D08 spec no. ETC/BC111/0105
MIXED
Economix Combi 15/3
A. 140mm
Economix Combi 22/3
A. 150mm
• 15mm Economix 15/3 Combi
thermostatic mixing valve
993615
• 22mm Economix 22/3 Combi
thermostatic mixing valve
993622
993615/993622
ECONOMIX Combi TMV
ECONOMIX Thermostatic Mixing Valve
1" BSP(M)
15/22 54
COLD
HOT
75
135
MIXED
TMV3 “T” pattern valve in standard formats for 15 mm and
22 mm. Chrome finish.
Approved to D08 spec no. ETC/BC111/0105
• 15mm Economix15/3
thermostatic mixing valve
983615
• 22mm Economix 22/3
thermostatic mixing valve
983622
The use of keysafe isolating ball strainers are recommended with the
above standard versions (see page 85).
983615/983622
ECONOMIX Standard TMV
HYDROMIX Combi Thermostatic Mixing Valve
B
TMV3 “T” pattern valve in Combi formats for 15 mm and
22 mm.
HYDROMIX Combi are supplied complete with 4 in 1 angle lever
ball valves with stainless steel mesh strainers, non return valves,
1/4’’BSP pressure tapping point and 1/4 turn lever ball valves.
Chrome finish.
Tamperproof cap (allen key access).
Approved to D08 spec no. ETC/BC332/0108
A
HOT
COLD
MIXED
Hydromix Combi15/3
A. 135mm
B. 135mm
Hydromix Combi 22/3
A. 150mm
B. 150mm
• 15mm Hydromix 15/3 Combi
thermostatic mixing valve
993015
• 22mm Hydromix 22/3 Combi
thermostatic mixing valve
993022
993015/993022
HYDROMIX Combi TMV
HYDROMIX Thermostatic Mixing Valve
135 (150 ‘Combi’ only)
HOT
COLD
A
75
MIXED
Hydromix 15/3
A. 135mm
Hydromix 22/3
A. 150mm
983015/983022
TMV3 “T” pattern valve in standard formats for 15 mm and
22 mm. Chrome finish.
Tamperproof cap (allen key access).
Approved to D08 spec no. ETC/BC332/0108
• 15mm Hydromix 15/3
thermostatic mixing valve
983015
• 22mm Hydromix 22/3
thermostatic mixing valve
983022
The use of keysafe isolating ball strainers are recommended with the
above standard versions (see page 85).
HYDROMIX Standard TMV
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Thermostatic mixing valves
Description
ESBE ES Thermostatic Mixing Valves are
designed for use with wash hand basins,
showers and bidets in higher risk and
Healthcare applications.TMV3 approval will be
available from launch.
• ESBE ES are available in standard format for
15 and 22mm.
• Body and valve in DZR brass, chrome plate
finish, element in copper, non-return valve in
hostaform plastic and top cover in ABS plastic.
• 3 years warranty
Advantages
Applications
Typical TMV
“L” pattern
ESBE ES Thermostatic Mixing Valves are ideal
for reducing temperatures in any situation
where normal hot water at 60°C may
accidentally scald and cause serious burns.
• Comfort: The ESBE ES VTA330 Thermostatic
Mixing Valves ensure an absolutely stable
temperature whatever the variations of
pressure and flow-rate in the installation.
• Anti-scalding security:
- Automatic security: ensures
an immediate hot water shut off in
case of cold supply failure.
- Temperature limitation: Maximum water
temperature is factory set at 43°C. TMV’s
should be installed and commissioned in line
with installation and maintenance.
• Quick installation:
The unique “L” pattern design reduces
retrofit installations by up to 40%.
Used in showers, basins, bidets and baths,
they ensure washing safety in schools, sports
centres, factories, prisons, and and all
commercial buildings.
Designated applications
Group mixing valve - Basin mixers
Hot
Cold
The ESBE ES range will be approved to TMV3
from launch.
BuildCert application no. ETC/BC 317
Technical characteristics
BuildCert Approved applications
Temperature stability
: +/- 1°C
Recommended pressure : 0.2 - 5.0 bar
Hot water supply
: 55 - 85°C
Cold water supply
: 5 - 20°C
Temperature differential
Td CW failsafe
: 10°C
TMV3 approval will be available from launch.
WRAS Listed no. 0803002
Connections
15mm or 22mm Compression with non return
valves fitted in Hot and Cold inlets.
The use of Keysafe isolating ball valve strainers
are recommended with the above versions.
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ESBE ES range TMV
ESBE ES Thermostatic Mixing Valve
E
F
HOT
C
MIXED
A
D
TMV3 “L” pattern valve available in Standard formats
is supplied complete with non return valve for 15 and 22mm.
TMV3 approval will be available from launch.
BuildCert application no. ETC/BC 317
• 15mm ESBE ES Standard
thermostatic mixing valve
ES8015
• 22mm ESBE ES Standard
thermostatic mixing valve
ES8022
B
COLD
A.
B.
C.
D.
E.
F.
75mm excluding nuts and olives
136mm excluding nuts and olives
54mm excluding nuts and olives
70mm excluding nuts and olives
1" BSP(M)
ESBE ES15 – 15mm
ESBE ES22 – 22mm
The use of keysafe isolating ball strainers are recommended with the
above standard versions (see below).
ES8015/ES8022
ESBE ES Standard TMV
DIRECTION
OF FLOW
A
Keysafe isolating ball valve strainers
Stainless steel isolating ball valve and strainer.
Recommended for in-service maintenance on ESBE ES
Thermostatic Mixing Valves.
(Closed Position Illustrated)
A. 65mm for 260003
A. 70mm for 260004
• 15mm Keysafe
260003
• 22mm Keysafe
260004
260003/26004
ISOLATING BALL STRAINERS
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Thermostatic mixing valves
Description
The TMR15 and 22 Thermostatic mixing valves
are specially designed to provide safe water
temperatures in low risk under basin and
general washroom applications.
• L pattern inlets.
• TMR thermostatic mixing valves
are available in standard formats for 15
and 22mm.
• Body in DZR Brass chrome plate finish, valve
and sleeve in Noryl GFN3, element in Copper
and top cover in plastic.
• 3 years warranty
Advantages
Typical TMV
Applications
“L” pattern
TMR Thermostatic mixing valves are ideal for
reducing temperatures in any situation where
normal hot water at 60°C may accidentally
scald and cause serious burns.
Group mixing valve - Basin mixers
Hot
• Comfort: The TMR thermostatic mixing valves
ensure stable temperature whatever the
variations of pressure and flow-rate in the
installation.
• Anti-scalding security:
- Automatic security: ensures
rapid hot water shut off in
case of cold supply failure.
- Temperature limitation: Maximum water
temperature is factory set at 43°C. TMV’s
should be installed and commissioned in line
with installation and maintenance
instructions.
• Quick installation: The unique ‘L’ pattern
design reduces retrofit installation times by up
to 40%.
Use in low risk applications including domestic
users, general purpose wash rooms, housing
associations and hotels. Typically, these would
be for basin applications with one or more
draw offs and to limit maximum water
temperatures for circulating pumps and prevent
cavitation.
Cold
Capacity with open discharge
(with no terminal fittings)
60
50
Flow (L / min)
30
20
10
0
1.0
1.5
2.0
2.5
Pressure (bar)
86
Compliance
Maximum temperature
: 90° C
Recommended pressure : 0.2 to 3 Bar
Maximum pressure
: 10 Bar
Maximum differential
: 5:1
Temperature adjustment : 30° to 60°C
Normal control temperature : 43° C
TMR thermostatic mixing valves complies with
BSEN 1287 and BSEN 1111 (cold water
failure).
Connections
Kv=1.6
40
0.5
Technical characteristics
3.0
3.5
4.0
TMR 15: 15mm Compression
TMR 22: 22mm Compression.
Non return valves are fitted to Hot and Cold
inlets.
The use of keysafe isolating ball valve strainers are
recommended with the above standard versions.
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TMR range TMV
TMR Thermostatic Mixing Valve
E
F
HOT
C
MIXED
A
D
B
COLD
A.
B.
C.
D.
E.
F.
75mm excluding nuts and olives
136mm excluding nuts and olives
54mm excluding nuts and olives
70mm excluding nuts and olives
1" BSP(M)
TMR15 – 15mm
TMR22 – 22mm
“L” pattern valve available in standard formats for 15 and
22mm.
with round control knob, temperature range 30°C - 60° C.
Chrome finish. Complies with BSEN 1287 and BSEN 1111
cold water failure.
• 15mm TMR15 Standard
thermostatic mixing valve
978015
• 22mm TMR22 Standard
thermostatic mixing valve
978022
The use of keysafe isolating ball strainers are recommended with the
above standard versions (see below).
TMR15/TMR22
TMR15/TMR22 TMV
Keysafe isolating ball valve strainers
DIRECTION
OF FLOW
A
(Closed Position Illustrated)
A. 65mm for 260003
A. 70mm for 260004
260003/26004
Stainless steel isolating ball valve and strainer.
Recommended for in-service maintenance on TMR Thermostatic
Mixing Valves.
• 15mm keysafe
260003
• 22mm keysafe
260004
ISOLATING BALL STRAINERS
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Group thermostatic mixing valves
Description
The TM25 & TM28 Group Thermostatic mixing
valves are specially designed to provide safe
water temperature control for group showers
and for hand washing.
• TheseTM thermostatic mixing valves
are available in standard formats for 22
and 28mm.
• Body in DZR Brass chrome plate finish,
element in Copper, non-return valve in
Hostaform plastic and top cover in plastic.
• 3 years warranty
Advantages
• Comfort: The TM thermostatic mixing valves
ensure stable temperature whatever the
variations of pressure and flow-rate in the
installation.
• Anti-scalding security:
- Automatic security: ensures rapid hot water
shut off in case of cold supply failure.
- Temperature limitation: Maximum water
temperature is factory set at 43°C.
Applications
TM25 &TM28 Thermostatic mixing valves are
ideal for reducing temperatures in in group
showers and for hand washing where normal
hot water at 60°C may accidentally scald and
cause serious burns.
Capacity with open discharge
140.0
Flow L/min
120.0
100.0
80.0
Kv = 3.6
They are ideally suited for use in multilple
shower applications such as sports halls,
schools and swimming pools.
Kv = 3.0
60.0
40.0
TM28
TM25
20.0
Bar
0.0
0
1
2
3
4
5
Technical characteristics
Maximum temperature : 95° C
Recommended pressure : 0.2 to 5 Bar
Maximum pressure
: 10 Bar
Maximum differential
: 54:1
Temperature adjustment : 30° to 49°C
(other ranges available)
Normal control temperature : 43° C
Connections
They also are ideal when low water pressure is
a problem.
TM 25: 22mm Compression connections.
TM 28: 28mm compression connections
Compliance
The use of keysafe isolating ball valve strainers
are recommended with these versions.
• TM Group TMV complies with BSEN 1287
and BSEN 1111 (cold water failure).
TM Group Thermostatic Mixing Valve
TM25/TM28 GROUP TMV
650032
• 28mm TM28 Standard TMV
supplied with two 28mm insert NRV’s.
650030
MIXED
HOT
50 mm
• 22mm TM25 Standard TMV
supplied with two 22mm insert non return valves.
120 mm
70 mm
available in standard formats for 22 and 28mm.
with round control knob, temperature range 30°C - 49° C.
Chrome finish. Complies with BSEN 1287 and BSEN 1111
(cold water failure).
COLD
650030
The use of keysafe isolating ball strainers are recommended with the
above standard versions (see below).
Keysafe isolating ball valve strainers
ISOLATING BALL STRAINERS
88
Stainless steel isolating ball valve and strainer.
Recommended for in-service maintenance on TM Group
Thermostatic Mixing Valves.
• 22mm keysafe
260004
• 28mm keysafe
620003
DIRECTION
OF FLOW
70 mm
(Closed Position Illustrated)
26004
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About Legionella risks
What is legionella disease?
It is an inhalation infection (pneumonia) that causes death in 15% to 20% of cases, with
smokers, elderly people, people with breathing problems or those with a weakened immune
system, most at risk. Legionella are bacteria that multiply in water stored in water pipes or
cisterns and will grow and multiply at temperatures between 20 and 46°C. They become
dangerous when they are inhaled from water droplets in suspension (aerosol). They spread in
lungs, become ingested in immune cells and they rapidly proliferate in the white corpuscles.
There are at least 43 different sorts of legionella but pneumophila legionella causes 80% of
legionella disease and can be treated with antibiotic (macrolide).
Around 200 – 250 recorded cases of Legionnaire’s Disease in the UK every year, with some
50% of these cases associated with overseas travel.
WHO (world health organisation) establishes the risk from 1000 legionella per water litre
(50 per litre in hospitals).
What types of sanitary installations are presenting a potential risk ?
The installations that represent an ideal breeding for legionella bacteria to grow have
stagnant water between 20 to 46°C and are associated with water vaporisation devices for
example:
• Showerheads, Jacuzzi, fountains, spreaders, aereators and in car washes ...
Danger level is generally set at 1000 legionella units per water litre. For high risk level
patients (with weakened immune system) in hospital, legionella concentration level has to be
carefully monitored at the points of use (thermostatic mixing valves near this point, circulating
loops, instant hot water production, microfilters...)
Unknown
site of
contamination
Care-Homes…
Water-cure
establishments
Hospitals…
Hotels,
Overseas
camp sites… trips
INSTITUT DE VEILLE SANITAIRE, 1999.
When cures are not without disadvantages
• Chlorinated shock: more than 10 mg injection of chlorine per water litre in the sanitary
installation during 8 hours.
• Thermal shock: this involves running water above 70°C for 30 minutes in the whole
sanitary system. A risk assessment must be carried out before decontamination process
commences, and users must not have access to the point of use.
When decontamination is in process, users must be isolated from points of use.
Chlorine
1. Those treatments only have a short time effect:
A new proliferation can be really quick, in 3 or 4 weeks. In corroded tanks or installation
dead-legs… bacteria can proliferate in the protective film named “bio-film”. Thermal or
chlorinated shocks may damage this protective film and provoke the diffusion of those
bacteria contained in the bio-film. Released in the water system, bacteria can colonize in
more territories after treatments.
2. They may have harmful effects for distribution and drainage systems:
Thermal or chlorinated shocks have to be carried out only on sanitary systems that are
entirely resistant to these types of treatments. It is essential to check, before treatment,
expansion and resistance of all the materials (including connections, joints, drains, plastic
types...), relevent to temperatures or chemicals concentration that will be used.
3. During the process, there’s a high risk level for users:
- Risk of third-degree burn, in case of thermal shock
- Poisoning risk, in case of chlorinated shock
4. Those operations are expensive and difficult to implement at every point of the
sanitary system (deposits, dead-legs, heat losses...) and requires that the entire system
is out of commission.
70°C
Temperature
Legionella development
up to 20°C
Lethargy
25 to 46°C
Multiplication
50°C
90% die in 2 h
60°C
90% die in 2 min
Legionella development / temperature
Source : CSTC Belgium 11/02
SOLUTION: Thermostatic mixing valves and preventive actions
Legionella bacteria are destroyed above 60°C and can not multiply above 47°C.
The solution is to generate and store hot water at temperatures above 60°C and to distribute hot water in the
circulating loop at 55°C (solution approved by the Code of Parctice and Guidance document L8 of the HSE).
Therefore thermostatic mixing valves should be installed as close as possible to the discharge points.
89
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