Inta Nulo CB10032CP User manual

Nulo and Nulo Deluxe
Safe-touch Shower Mixing Val e
CB10032CP & CB10036CP
Installation and Maintenance Instructions
In this procedure document we ha e endea oured to make the
information as accurate as possible.
We cannot accept any responsibility should it be found that in
any respect the information is inaccurate or incomplete or
becomes so as a result of further de elopments or otherwise.
Intatec Ltd
Airfield Industrial Estate
Hixon
Staffordshire
ST18 0PF
Tel: [phone]
Fax: [phone]
email: [email protected]
web: www.intatec.co.uk
© Intatec Ltd 2017

© Intatec Ltd 2017 1
Introduction
This installation guide has been produced for the Nulo shower mixing valve. These instructions
cover the installation, operation and maintenance. Please read the enclosed instructions before
commencing the installation of this product, please note;
We recommend that the installation of any Inta product is carried out
by an approved installer.
The installation must be carried out strictly in accordance with the Water Supply (Water Fitting)
Regulations 1999 and any local authority regulations.
If in doubt we recommend that you contact WRAS - Water Regulations Advisory Scheme on
Tel: [phone], your local water authority - details available on the WRAS website or
the Chartered Institute of Plumbing and Heating Engineers on Tel: [phone].
All products MUST be re-commissioned to suit site conditions to ensure optimum performance
levels of the product are obtained
Safety
This thermostatic shower must be installed and commissioned correctly to ensure that water is
supplied at a safe temperature to suit the users.
The shower is pre-set using ideal conditions to 38°C at the stop with a manual push button
override to 46°C (can be re-set to suit site conditions or user preference – see calibration
page 7).
The maximum mixed temperature takes account of the allowable tolerances inherent in
thermostatic shower mixers and temperature losses.
It is not a safe bathing temperature for adults or children.
The British Burns Association recommends 37 to 37.5˚C as a comfortable bathing
temperature for children. In premises covered by the Care Standard Act 2000, the maximum
mixed water outlet temperature is 43˚C.
Products
Nulo Thermostatic Bar Shower with Telescopic Riser, verhead
Soaker and Handset. CB10032CP
Nulo Deluxe Safe Touch Thermostatic Bar Shower with Riser, Large
Stainless Steel Soaker, Push Button Handset and Smooth Hose CB10036CP
Nulo Thermostatic Bar Shower - valve only ED10046CP
Check Content
Before commencing remove all components from packaging and check each component with
the contents list.
Ensure all parts are present, before discarding any packaging. If any parts are missing, do not
attempt to install your Inta shower valve until the missing parts have been obtained.

© Intatec Ltd 2017 2
Technical Data
The Nulo thermostatic shower valve is suitable for installations on all types of plumbing
systems, including gravity supplies, fully pumped, modulating combination boiler, unvented
water heater and unbalanced supplies i.e. Cold Mains & Tank Fed Hot. They are not suitable
for non-modulating combination boilers.
Max Inlet Pressure (Static) 10 bar Max Inlet Temperature 85˚C
Max Inlet Pressure (Dynamic) 5 bar Pre Set Factory Temp Setting 38˚C
Min perating Pressure (Dynamic) 0.4 bar Temperature Stability ±2˚C
Max Unbalanced Pressure Ratio 5:1 Min Temp Differential to
Inlet Connections (Body only) G¾” ensure fail-safe between hot
utlet Connection Bottom G½” and cold supplies 10˚C
Item Qty Component Item Qty Component
1 1 Body 72Circlip
2 2 Wall brackets 82Filter
3 2 live 92Check valve
4 2 Compression face 10 2 Connector
5 2 Concealing plate 11 2 Union nut
6 2 Sealing washer 12 2 ‘ ’ ring seal
Components
11 12
235
6
7910
1
4
8

© Intatec Ltd 2017 3
nvented Mains Pressure System
The drawing shows a typical installation of a
shower mixing valve in conjunction with an
unvented hot water system. This type of
installation must be carried out in accordance
with Part G of the Building Regulations.
Whilst pressures are theoretically equal
(balanced) most unvented hot systems have a
pressure reducing valve on the incoming cold
water prior to the hot water storage vessel.
This means that the hot and cold pressures can
be significantly different.
Most unvented systems use an inlet manifold
located directly after the pressure reducing
valve.
It is recommended that the cold supply be taken
from one of the outlets of the manifold directly to the shower as an independent supply.
For systems without a manifold unit after the pressure reducing valve and where the cold water
supply pressure is significantly higher than the hot supply we recommend that a separate
pressure reducing valve is fitted to the cold supply, as close as possible to the shower valve
and with no draw off points between it and the shower valve.
Flow regulators are required for installations where a PRV is not fitted to ensure simultaneous
demand is accounted for.
Modulating Combi Boiler / Instantaneous Gas Water Heater
The drawing shows a typical installation of a shower valve in conjunction with a combination
boiler.
Combi boilers will produce a constant flow of water at a
temperature within its operating range.
The hot water flow rates are dependant upon the type of
boiler / heater used and the temperature rise required
to heat the cold water to the required temperature.
The cold water flow rates may be much greater as they
are generally unrestricted from the mains cold water
supply. To ensure relatively balanced flow rates, we
recommend that a pressure reducing valve or 6 l/min
flow regulator is fitted in the cold water supply pipe.
Manifold
PRV
PRV if
manifold is
not used
Cold Supply direct
from mains

© Intatec Ltd 2017 4
Pumped Systems
Pumped systems use a booster pump to increase the
pressure of the gravity fed water supplies.
These booster pumps are used where the head of
water is insufficient to provide a satisfactory shower
or where a high performance shower is required.
Please ensure that the performance of the pump is
matched to suit the shower.
Follow the instructions for gravity fed installations
taking into account the installation requirements of
the pump.
Ensure that the hot and cold water storage capacity
is sufficient to supply the shower and any other
draw off points that may be used simultaneously.
Most pumps require a minimum head of water to
allow the flow switches to operate automatically.
Where this is not available a ne ative head kit
may be required to operate the pump.
Please consult the pump manufacturer’s installation requirements
Gravity System
The drawing shows a typical installation of a
shower valve on a gravity supplied system.
Please note the minimum head pressure required
to ensure correct operation of the valve. In
accordance with good plumbing practice, we
recommend that a totally independent hot and
cold water supply be taken to the valve.
The cold water supply must be connected directly
to the water cistern. The hot water supply should
be connected to the hot water cylinder via an
Essex flange or Sussex flange or to the vent or a
draw off pipe as close as possible to the top of
the cylinder.
For equal tank fed pressures there is no need to
fit the flow regulators. This installation is the
recommended minimum for gravity supplies. For
systems with less than 4 metre head pressure,
we recommend that a suitable booster pump is
fitted to increase the supply pressure.
Cold Supply direct
from mains
Pumps
Option shown
for mains
pressure cold
& low pressure
hot water
Min. 4m head

© Intatec Ltd 2017 5
Gravity System
Cold Mains & Gravity Hot Supplies
If the cold supply to the shower is direct from the cold water mains and the hot water supply is
gravity fed from the cold water cistern via the hot water cistern you MUST fit a pressure
reducing valve or a 6 l/min flow regulator.
Site Preparation
It is important to plan the installation thoroughly to suit site conditions before
commencing.
• Before commencing the installation ensure site conditions are suitable.
• The shower mixing valve is designed for concealed pipework, whether in a solid or studded
wall with the supply pipes coming from below, above, the side or through the wall.
• The thickness of wall tiles, plaster or plaster board should all be considered when routing the
hot and cold supply pipes.
• The valve requires the supply pipes and wall brackets to have 150mm centres and sufficient
copper pipe must protrude from the finished tiled surface to allow a water tight compression
joint to be made.
• Ensure the shower valve will be horizontal when installed.
• The supply pipes if not embedded into the wall with plaster the should be fixed securely
to the studding.
• The whole system should be thoroughly flushed, prior to the connection of the hot and cold
water supplies to the bath-shower mixing valve, to remove any debris that may be in the
supply pipework.
• Ensure there are no joint leaks before finishing the wall.
• Isolation valves must be fitted in an accessible position to both the hot and cold supplies
should the valve need to be isolated in the future for servicing.
150 Ctrs

© Intatec Ltd 2017 6
Fitting the Brackets
• Apply silicone sealer to the back of both wall brackets, fit to the 2 protruding copper pipes,
press to the wall and secure both brackets with 2 counter sunk screws.
• Add the olives and then the compression faces and tighten until water tight joints are made.
• Apply a bead of silicone sealer around the inside edge of the concealing plates, position
over the compression faces and press firmly to the wall.
Installing the Shower Valve
• The connector (10), check valve (9), filter (8), sealing washer (6) and union nut (11)
assemblies are factory fitted to the shower valve.
• Fit the shower valve to the wall bracket assemblies using the sealing washers (6) and using a
suitably sized spanned, tighten the union nuts taking care not to damage the finish on the
shower valve, do not over tighten.
• Turn on the water supplies and check that all joints are water tight.

© Intatec Ltd 2017 7
Calibration
The Nulo shower valve has a factory set outlet temperature of 38˚C via the security setting.
This is based on a balanced supply pressure and a stable hot water inlet temperature of 65˚C.
However, the calibration point MUST be checked and re-set as necessary to suit site conditions.
Care must be taken when re-calibrating the valve as INCORRECT CALIBRATION CAN CAUSE
INJURY.
• Remove the cover cap (2), the retaining screw (3), spring washer (4), brass spacer (5),
temperature control knob (6), the control knob bush (8) and the temperature stop ring (10)
paying attention to the position before removal.
• Fully open the flow control (1) and allow the outlet temperature to stabilise from the bottom
outlet.
• Temporarily refit the control knob bush (8) and control knob (6) and using a digital thermometer
it is possible to increase or reduce the mixed water outlet temperature until 38˚C is
re-established, by slowly rotating the control knob.
• Remove the control knob bush (8) and control knob (6) and refit the temperature stop ring (10)
onto the splined section of the cartridge when 38˚C is achieved. Refit the temperature stop ring
as per the position before removal.
• Refit the temperature control knob in the reverse order ensuring that 38˚C on the shower body
is in line with the security setting of the control knob.
PLEASE NOTE THAT ONCE CALIBRATED, THE SECURITY SETTING WILL ONLY BE 38˚C
UNDER THE SUPPLY CONDITIONS USED FOR CALIBRATION.
1
9
10
11 2
3
4
5
6
7
8

© Intatec Ltd 2017 8
Cartridge Replacement
• Isolate both the hot and cold water supplies
• Remove the cover cap (2), the retaining screw (3), spring washer (4), brass spacer (5),
temperature control knob (6), the control knob bush (8) and the temperature stop ring (10)
paying attention to the position before removal.
• Remove the cartridge housing clip (9).
• Using a suitably sized spanner unscrew the cartridge (11) from the shower valve body.
• Replace with a new cartridge, the shower valve must be re-calibrated after fitting the new
cartridge following the procedure on page 7.
• Re-assemble the control knob assembly in the reverse order.
• Re-check the calibration temperature from the shower valve outlet.
Aftercare
Inta shower mixing valves have a high quality finish and should be treated with care.
An occasional wipe with a mild washing-up liquid on a soft damp cloth followed by a
thorough rinsing is all that is required.
The nozzles in the hand set or overhead soaker should be cleaned periodically to remove any
build up of debris or deposits which may affect the performance of the shower.
Do not use an abrasive or chemical household cleaner as this may cause damage.
Servicing
The Inta shower valve is designed to provide a high level of thermal performance to ensure the
life cycle is as long as possible;
Valves should be serviced annually which should include the following:
1 Cleaning the independent inlet strainers - the filter element.
2 Cleaning the thermostatic cartridge filters - the complete cartridge must be removed for
cleaning.
Spares
A full range of spares are available for this product.
PLEASE NOTE: nly genuine spares should be used.

© Intatec Ltd 2017 9
Fault Solution
Showering temperature is not hot enough. Ensure the hot water supply is at a constant
temperature above 60˚C.
Check for air locks in the pipework.
Thermostatic cartridge movement limited
due to lime scale build up
The water goes cold during showering. Insufficient stored hot water.
When used with a combi boiler confirm
that the boiler is still firing.
Adjust the boiler to a minimum setting of
65˚C which may not necessarily be the
best flow rate.
When the water is set at cold, the
showering temperature is too hot.
The hot and cold supply connections have
been made in reverse.
Thermostatic cartridge movement limited
due to lime scale build up
The maximum showering temperature is
too hot or when set to hot water runs to
cold.
Check the commissioned maximum
temperature of the shower valve.
Check the connections to the valve have
not been made in reverse.
Thermostatic cartridge movement limited
due to lime scale build up
The flow of water from the shower valve is
low.
Check the filters are clean and the supply
pressure is above 0.4 bar.
No flow of water Ensure the valve has not fail-safed and
check that there is hot and cold water flow
to the valve.
Ensure the check valves are not closed.
Shower is stiff to operate Build-up of limescale on flow control
cartridge - service and de-scale
Passing/dripping from outlet Service flow control cartridge.
Problem Solving
The following details are supplied for on site queries, should you require any further assistance
our Technical Department can be contacted directly on 01889 272199.

© Intatec Ltd 2017 10
NOTE: drawing for illustration purposes only.
CB10032CP Fixed Riser Rail - Dimensions
150 Ctrs
264
722 to 952
55
410
71
200

© Intatec Ltd 2017 11
CB10032CP Fixed Riser Rail - Components
7
8
3
5
4
6
9
11
12
10
10
1
2
13
10
Item Qty Component
1 1 Riser rail
2 1 Riser rail grub screw
3 1 Handset holder
4 1 Adjustment bracket
5 4 Bracket grub screw
6 1 Adjustment piece
7 1 Wall bracket
8 2 Wall bracket grub screw
9 1 ver head shower arm
10 3 ½” sealing washer
11 1 Shower head
12 1 Shower handset
13 1 Flexible hose

© Intatec Ltd 2017 12
CB10036CP Deluxe Fixed Riser Rail - Dimensions
NOTE: drawing for illustration purposes only.
150 Ctrs
264
55
410
250
722 to 952

© Intatec Ltd 2017 13
CB10036CP Deluxe Fixed Riser Rail - Components
11
10
10
1
2
3
5
4
6
8
9
10
13
12
7
Item Qty Component
1 1 Riser rail
2 1 Riser rail grub screw
3 1 Handset holder
4 1 Adjustment bracket
5 4 Bracket grub screw
6 1 Adjustment piece
7 1 Wall bracket
8 2 Wall bracket grub screw
9 1 ver head shower arm
10 3 ½” sealing washer
11 1 Large Stainless St. soaker
12 1 Push Button handset
13 1 Smooth hose

© Intatec Ltd 2017 14
Fixed Riser Rail - Installation
Fit the shower valve and finish tiling the wall prior to installing the shower riser.
Ensure the overhead arm projection does not exceed the shower tray.
Assemble the adjustment piece (6) into the top of the riser rail (1) ensuring both seals are fully
inserted.
Slide the handset holder (3) over the adjustment piece (6) and lock into position on the riser
rail (1).
Slide the adjustment bracket (4) over the adjustment piece and set to the required height.
nce the height has been set lock the bracket into place by tightening the grub screws (5)
using a suitably sized Allen key.
Locate the overhead shower arm (9) onto the adjustment piece (6) and the wall bracket (7) into
the overhead arm.
Fit the riser rail assembly to the shower valve and using a suitable method mark round the wall
bracket (7) onto the wall.
Remove the riser rail and wall bracket.
Position the wall bracket onto the wall within the markings and using the hole as a template,
drill a 6mm diameter hole.
If drilling into ceramic tiles use a ceramic bit.
To avoid cracking ensure the wall plug is pushed all the way behind the ceramic tile.
Using the screw provided secure the wall box firmly to the wall. This is the main fixing
screw for the riser and shower so must be held securely by the plastic plug in the wall.
If the wall is plaster board or soft building block use special wall plugs obtainable from most DIY
stores.
Fixed Riser Rail - Assembly
Attach the shower head (11) to the shower arm using a ½” sealing washer (10) to create a water
tight seal onto the riser rail assembly.
Re-assemble the riser rail to the shower valve and over head arm (9) onto the wall bracket
(7) ensuring the riser rail is vertical.
Tighten the two wall bracket grub screws (8) to secure the riser rail.
Secure the grub screw (2) at the bottom of the riser rail to fix in position.
Connect the shower handset (12) to the flexible hose (13) and the hose to the bottom outlet of the
shower valve, ensure the ½” sealing washers (10) are fitted.
Turn on the water supply and check joints for leakage.

© Intatec Ltd 2017 15
IMPORTANT
IMPORTANT
The following information is required when the thermostatic mixing valve is used in a TMV2
A lications under the requirements of BS EN 1111: 1999 “Sanitary ta ware – Thermostatic
Mixing Valve (PN 10) – General Technical S ecification”
Supply Conditions
The supply conditions to the Thermostatic Mixing Valve must comply with the following;
Note: Valves operating outside these conditions cannot be guaranteed by the Scheme to
operate as type 2 valves.
• The valves designation of use, HP-S tested against BS EN 1111.
• For valves designated for use HP only, if a water supply is fed by gravity then the supply
pressures should be verified to ensure the conditions of use are appropriate for the valve.
Introduction
The thermostatic shower valve has been s ecifically designed and manufactured to meet the
requirements of BS EN1111:1999 and TMV2 Ty e Scheme. The valve has been inde endently
tested and a roved as a TYPE 2 valve under the BuildCert TMV2 scheme by the WRc Testing &
Evaluation Center.
Application
The thermostatic shower mixer has been independently tested by WRc and certified as meeting
the requirements of the BS EN 1111:1999 and under the TMV2 Scheme as being suitable for
use on the following designations.
Shower HP-S
Conditions High Pressure ~ BS EN 1111
Maximum Static Pressure 10 bar
Flow Pressure, Hot & Cold 0.5 to 5 bar
Hot Supply Temperature 55 to 65˚C
Cold Supply Temperature ≤ 25˚C
Temperature Stability ±2˚C
Min Temp Differential (Mix to Hot) for
fail-safe 10˚C
Max. Pressure Inlet Differential 5:1

© Intatec Ltd 2017 16
Recommended Outlet temperatures
The BuildCert TMV scheme recommends the following set maximum mixed water outlet
temperature for use in all premises:
The mixed water temperature must never exceed 43˚C.
The maximum mixed water temperature can be 2˚C above the recommended maximum set
outlet temperature.
Note: 43˚C is the maximum mixed water temperature from a shower mixer. The maximum
temperature takes account of the allowable tolerances inherent in thermostatic shower
mixers and temperature losses.
It is not a safe bathing Temperature for adults or children.
The British Burns Association recommends 37 to 37.5˚C as a comfortable bathing
temperature for children. In premises covered by the Care Standard Act 2000, the
maximum mixed water outlet temperature is 43˚C.
Installation
Important: - The following instructions must be read prior to the installation of the
thermostatic shower valve. The installer of the thermostatic shower valve must comply with the
requirements of the Water supply (Water Fittings) Regulations 1999 and also be aware of their
responsibility and duty of care to ensure that all aspects of the installation comply with the
regulations.
It has been brought to our attention that flushing water systems using certain chemicals may
wholly or partially remove the lubricant from the internal workings of the valve, which may
adversely affect its performance. We recommend that following flushing the system with
chemicals; valves are checked for correct operation.
1. It is essential that before installing any thermostatic shower valve to ensure that the supply
conditions of the system to which the valve is intended to be fitted are checked to confirm
compliance with the parameters as quoted within the technical specification and conditions
on which the approval is granted i.e. verify supply temperatures, supply pressures, risk
assessment.
2. Consideration must be made for the possibility of multiple / simultaneous demands being
made on the supply system whilst the thermostatic shower valve is in use, all practical
precautions must be made to ensure that the valve is not affected. Failure to make provision
within the pipe sizing etc. will affect the performance of the shower valve.
Application Recommended Hot Water Temperature
Shower 41˚C

© Intatec Ltd 2017 17
Installation
3. The supply to which the thermostatic shower valve is to be installed must be thoroughly
flushed and cleaned to remove any debris, which may have accumulated during the
installation. Failure to remove any debris will affect the performance and the manufacturer’s
warranty of the product. In areas that are subject to aggressive water, provision must be
made to treat the supplies prior to the supplies entering the shower valve.
4. The thermostatic shower valve has been designed for horizontal installation and surface
mounting.
5. The thermostatic shower valve will be installed in such a position that maintenance of it’s
components, associated valves and the commissioning and testing of the shower valve can
be undertaken.
6. The hot and cold water supplies must be connected to the valve strictly in accordance with
the indications on the body of the valve i.e. hot water supply to the hot port of the valve.
7. In a situation where one or both of the water supplies are excessive, it is recommended to fit
a Pressure Reducing Valve to reduce the pressure(s) to within the limits as quoted previously.
8. Any thermostatic shower valve must be fitted with a back flow prevention device, such as
check valves to prevent the cross contamination of supplies. The thermostatic shower valve
is supplied complete with integral insert check valves and strainers.
9. Isolation valves in an accessible position are required as close as is practicable to the water
supply inlets of the thermostatic shower valve.
10. The fitting of strainers is recommended as close as is practicable to the water supply inlets of
the thermostatic shower valve.
11. It is essential that the fail safe thermostatic shower valve should not be installed in situations
where there is a possibility of the valve being deprived of water or where demands for
water are greater than the actual stored supplies.
12. To ensure that the performance levels of the thermostatic shower valve are maintained (in
the event of cold water failure), the temperature of the hot water supply at the point of entry
to the thermostatic shower valve must be a minimum of 10˚C above the commissioned
mixed water discharge temperature.
13. The fail-safe thermostatic shower valve must not be subject to any extreme temperature
variations either during the installation or under normal operating conditions.

© Intatec Ltd 2017 18
Commissioning
Important: - The following instructions must be read and understood prior to commissioning the
thermostatic shower valve. If under any circumstances there are aspects to the installation /
system which do not comply with the specification laid down, the valve M ST NOT be put
into operation until the system / installation complies with the specification. However if all
these conditions are met, proceed to set the temperature as follows;
1. Ensure that the system is thoroughly cleaned and free from any debris prior to
commissioning the thermostatic shower valve.
2. Commissioning the temperatures must be carried out using a suitably calibrated
thermometer, preferably a digital thermometer. The sensing part of the thermometer probe
must be fully submerged in the water when testing.
3. The valve must be commissioned taking into consideration any fluctuations, which may
occur within the system due to simultaneous demands. It is advisable that any outlets which
are connected to the same supply as the shower valve are open during setting of the mixed
water temperature. It is advisable to ensure that the water temperatures are established
before any attempt to commission.
4. nce the supply temperatures are stable and the normal operating conditions are
established, the shower valve can be commissioned. The following sequence should be
followed when commissioning the valve;
4.1 The first step in commissioning a thermostatic shower valve is to check the following:
• The designation of the thermostatic shower valve matches the application
• The supply pressures are within the valve’s operating range.
• The supply temperatures are within the valve’s operating range.
• Isolating valves (and ‘Y’ strainers preferred) are provided.
4.2 If all these conditions are met, proceed to set the temperature following the procedure
described earlier in the Calibration section.
4.3 Measure and record the temperature of the hot and cold water supplies at the
connection to the valve.
4.4 Measure and record the temperature of the water discharging from the valve.
4.5 Isolate the cold water supply to the valve and monitor the mixed water temperature.
4.6 Measure and record the maximum mixed water temperature and the final temperature.
The final temperature found during the test should not exceed the values quoted.
4.7 Record all the equipment used during the commissioning.
4.8 The mixed water temperature at the terminal fitting must never exceed 2˚C above the
set temperature.

© Intatec Ltd 2017 19
Commissioning
5. If the mixed water temperature exceeds the recommended temperature of 41˚C by 2˚C or
does not reach 41˚C the shower valve can be adjusted as follows:
5.1 With stable supply conditions remove the temperature control knob.
5.2 Rotate the temperature control knob by one spline clockwise to increase the temperature
and one spline anticlockwise to reduce it.
5.3 Measure the water discharging from the shower.
5.4 Repeat 5.2 until the desired temperature is stabilised and record the temperature.
5.5 Repeat 4.4 and 4.5
5.6 Secure the temperature control knob with the retaining screw and re-fit the cover.
6. The above information must be recorded and updated on every occasion when any work is
carried out on the valve.
In Service Testing
It is a requirement that all TMV2 approved valves shall be verified against the original set
temperature results once a year. When commissioning / testing is due the following
performance checks shall be carried out.
1. Measure the mixed water temperature at the outlet.
2. Carry out the cold water supply isolation test by isolating the cold water supply, wait for five
seconds if water is still flowing check that the temperature is below 43˚C.
3. If there is no significant change to the set outlet temperature (±2˚C or less from the original
settings) and the fail-safe shut off is functioning, then the valve is working correctly and no
further service work is required.
Notes:
• If there is a residual flow during the commissioning or the annual verification (cold water
supply isolation test), then this is acceptable providing the temperature of the water seeping
from the valve is no more than 2˚C above the designated maximum mixed water outlet
temperature setting of the valve.
• Temperature readings should be taken at the normal flow rate after allowing for the system
to stabilise.
• The sensing part of the thermometer probe must be fully submerged in the water to be
tested.
• Any thermostatic shower that has been adjusted or serviced must be re-commissioned and
re-tested in accordance with the manufacturers’ instructions