Geberit Twyford SF1138CP User manual

Sola Thermostatic Basin Mixer - TMV3
SF1138CP
Installation and Maintenance Instructions
In this procedure document we have endeavoured 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 developments or otherwise.
Twyford Bathrooms Registered Office
Geberit House
Academy Drive
Warwick
CV34 6QZ, UK
Part of the Geberit Group
Telephone: [phone]
Email: [email protected]
Website: www.twyfordbathrooms.com

1
Contents
Thank you for choosing the Twyford TMV3 approved thermostatic basin tap.
Subject Page
Introduction and Safety 2
Components 3
Technical Data 4
Dimensions 4
Installation 5
Calibration 6
Cartridge Replacement 7
TMV3 Section
Introduction 8
Technical Specification 8
Application 9
Installation 9
Commissioning 10
Maintenance 12
Twyford Guarantee 14

2
Introduction
This installation guide has been produced for the Sola thermostatic basin tap. 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 Twyford 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
Twyford thermostatic basin taps must be installed and commissioned correctly to ensure that
water is supplied at a safe temperature to suit the users.
The mixers are pre-set using ideal conditions to 38°C.
The maximum mixed temperature takes account of the allowable tolerances inherent in
thermostatic 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
Sola TMV3 Thermostatic Basin Mixer Tap with Flexible Tails SF1138CP
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 Sola mixer tap until the missing parts have been obtained.

3
Item Qty Component
1 1 Body
2 1 Indice
3 1 Retaining screw
4 1 Handle
5 2 Temperature stop ring
6 1 Thermostatic cartridge
7 1 Retaining screw
8 1 Seat
9 1 Sealing ring
10 1 Horse shoe plate
11 1 Threaded rod
12 1 Retaining nut
13 2 350mm flexible tail
14 2 Check valve and filter
15 2 Isolating valve with
sealing washer
1
8
2
3
4
6
9
10
11
12
13
14
7
15
5
Components

4
Technical Data
This Sola thermostatic mixer tap is suitable for installations on all types of plumbing
system, 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) 12 bar Temperature Stability ±2˚C
Max Inlet Pressure (Dynamic) 5 bar Max Unbalanced Pressure Ratio 5:1
Max Inlet Temperature 85˚C without flow regulator
Min Inlet Temperature 10˚C Min Temp Differential to
Pre Set Factory Temp Setting 38˚C ensure fail-safe between hot
Min Operating Pressure (Dynamic) 0.2 bar and cold supplies 10˚
Dimensions
Ø45 97
30˚
132
148
156
39

5
Installation
The Sola thermostatic basin tap is designed to be
installed onto one hole tap basins.
The SF1138CP tap is supplied with two 350mm long
flexible tails already fitted to the tap.
Fit check valves with integral filter (14) to the two
flexible tails and fit the isolation valves (15) to the
check valves using the sealing washers provided.
Ensure the check valves are connected correctly,
with the flow direction arrow pointing in the direction
of the water flow.
The isolating valves (15) have compression
connections to ease the connection to copper tube.
Screw the threaded rod (11) into the threaded hole in
the base of the body taking care not to over tighten.
The cold supply must be connected to the right
hand side and the hot to the left hand side of the
mixer when viewed from the front.
Ensure that the ‘O’ ring seal (9) is located in the base
of the tap prior to fitting the mixer to the basin.
Once in place using the horse shoe retaining plate
(10) secure in position, taking care not to over tighten
the retaining nut (12).
For optimum mixing performance where the hot and
cold pressures are not equal, pressure regulating
valves should be installed directly upstream of the tap
so that the water supply pressures can be regulated
and equalised.
Installation
9
10
11
12
13
14
15

6
Calibration
The Sola Thermostatic mixer tap 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 tap as INCORRECT CALIBRATION CAN CAUSE
INJURY.
• Remove the indice (2), retaining screw (3), handle (4).
• Remove both rings (A & B) from the cartridge.
• Temporarily refit the handle (4).
• Using a digital thermometer increase or reduce the mixed water outlet temperature until 38˚C
is established and stabilised.
• Remove the control knob (4) and refit the temperature stop rings (A) as shown in Fig 1 onto
the splined section of the cartridge at the maximum temperature position.
• Temporarily refit the handle (4) and rotate clockwise until the water flow stops, refit
temperature stop ring (B) as shown in Fig 2.
• Refit the handle in the reverse order.
• Check calibration temperature.
PLEASE NOTE THAT ONCE CALIBRATED, THE SECURITY SETTING WILL ONLY BE 38˚C
UNDER THE SUPPLY CONDITIONS USED FOR CALIBRATION.
B - Cold
A
B
A - Hot
Fig. 1 Fig. 2

7
Cartridge Replacement
Isolate both the hot and cold water supplies
Remove the indice (2), and unscrew retaining screw (3).
Remove the temperature control knob (4) and the
temperature stop rings (5).
Using a suitable spanner unscrew the cartridge (6).
Replace with a new cartridge and assemble in the
reverse order.
Re-calibrate following the procedure in the Calibration
section
Aftercare
The nozzle should be cleaned periodically to remove
any build up of debris or deposits which may affect the
performance of the tap.
Twyford taps 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.
Do not use an abrasive or chemical household
cleaner as this may cause damage.
2
3
4
6
5

8
Outlet Temperature Adjustment Range 30˚C to 50˚C
Temperature Stability ±2˚C
Maximum Hot Inlet Temperature 85˚C
DO8 Working Pressure Range 1.0 to 5.0 bar : High Pressure
Min Temp Differential (Mix to Hot) for Fail-Safe 10˚C
Max. Pressure Inlet Differential 5 : 1
Sola TMV3 Thermostatic Basin Tap
Introduction
The Sola safe touch thermostatic basin tap has been specifically designed and manufactured to
meet the requirements of BS 7942: 2000 and NHS D08. The valve has been independently
tested and approved as a TYPE 3 valve under the TMV3 scheme.
Technical Specification / Conditions for use TMV3 Valves
NOTE: Valves operating outside these conditions cannot be guaranteed by the Scheme to
operate as Type 3 valves.
Approvals
TMV3 Scheme Approval Number: Details Available on Request
WRAS Scheme Approval Number: Details Available on Request
Fail Safe Function
The Sola thermostatic basin tap is designed to stop the mixed water flow in the event of either
the hot or cold water supply failing when installed in accordance with these instructions. To
ensure full closure of the mixed water flow the minimum temperature differential between the
hot water inlet to the tap and the mixed water outlet MUST be at least 10˚C.
Operating Pressure Range High Pressure Low Pressure
Maximum Static Pressure 10 bar 10 bar
Flow Pressure, Hot and Cold 1 to 5 bar 0.2 to 1 bar
Hot Supply Temperature 55˚C to 65˚C 55˚C to 65˚C
Cold Supply Temperature 5˚C to 20˚C 5˚C to 20˚C

9
Application
The Sola thermostatic mixer tap has been independently tested by Buildcert Limited and certified
as meeting the requirements of the NHS D08 specification under the TMV3 Scheme as being
suitable for use on the following designations;
Wash Hand Basin HP-W
Temperature Setting
Ensure that the basin tap is commissioned under normal system conditions. The basin tap MUST
be commissioned to suit site conditions and the desired outlet temperature set by the installer;
i With normal supply conditions established and the hot and cold water supplies running, open
the basin tap to its maximum temperature and leave running.
ii Remove the indice, retaining screw and handle by pulling away from the tap and the
temperature stop ring, see diagram on page 5.
iii Fully open the flow control and allow the outlet temperature to stabilise.
iv Temporarily refit the handle 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
handle.
v Remove the handle and refit the temperature stop ring onto the splined section of the
cartridge at the maximum temperature position.
vi Refit the handle in the reverse order.
Installation
IMPORTANT - The following instructions must be read prior to the installation of any Twyford
basin tap. The installer should also be aware of their responsibility and duty of care to ensure that
all aspects of the installation comply with all current regulations and legislation.
Flushing through 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 a flushing of the system with chemicals, valves are checked for correct
operation.
1 It is essential that before installing a Sola thermostatic basin tap to ensure that the supply
conditions of the system, to which the tap 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 basin tap is in use, all practical precautions must be
made to ensure that the basin tap is not affected. Failure to make provision within the pipe
sizing etc. will affect the performance of the tap.

10
Installation
3 The supply system to which the Sola thermostatic basin tap is to be installed into 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 water
supply prior to the supply entering any product.
4 The maximum flow rate of the tap will only be achieved when the supply conditions are
achieved as quoted within the Technical Specification, with a flow condition under 1 bar
differential pressure.
5 This thermostatic mixer tap has been designed for basin mounting. It is essential that
access to the tap is not obstructed for commissioning, testing, or any future maintenance
that may be required.
6 The hot and cold water supplies must be connected to the tap strictly in accordance with
these instructions i.e. hot water supply to the hot port of the tap.
7 In a situation where one or both of the water supplies are excessive, it is possible to fit a
pressure reducing valve or a flow regulator to reduce the pressure(s) to within the limits as
quoted previously.
8 Any thermostatic basin tap must be fitted with a back flow prevention device, such as check
valves (supplied) to prevent the cross contamination of supplies.
9 Independent filters/check valves and isolation valves must be fitted in conjunction with the
SF1138CP basin tap, as close as practically possible to the water supply inlets.
10 It is essential that the Sola thermostatic basin tap should not be installed in situations where
there is a possibility of the tap being deprived of water or where demands for water are
greater than the actual stored supplies.
11 To ensure that the performance levels of the Sola thermostatic basin tap is maintained
(in the event of cold water failure), the temperature of the hot water supply at the point of
entry to the valves must be a minimum of 10˚C above the commissioned mixed water
discharge temperature.
12 The Sola thermostatic basin tap must not be subject to any extreme temperature variations
either during the installation or under normal operating conditions.
Commissioning
IMPORTANT - The following instructions must be read and understood prior to commissioning
the Sola thermostatic basin tap. If under any circumstances there are aspects to the installation /
system which do not comply with the specification laid down, the tap MUST NOT be put into
operation until the system / installation complies with our 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 the
commissioning the Sola thermostatic basin tap.
2 Commissioning the temperatures must be carried out using a suitably calibrated
thermometer preferably a digital thermometer.

11
Commissioning
3 In the absence of other temperatures being specified, we recommend the outlet
temperature quoted in Table 1 are used.
Table 1
4 Each basin tap 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 basin tap are opened during the setting of
the mixed water temperature. During commissioning it is advisable to ensure that the water
temperatures are established before any attempt to commission.
5 Once the supply temperatures are stable and the normal operating conditions are
established, the tap can be commissioned. The temperature setting can be adjusted
following the procedure described earlier in the Temperature Setting section.
We suggest that the following sequence is followed when commissioning the valve:
5.1 Set the mixed water temperature to the required temperature.
5.2 Measure and record the temperature of the hot and cold water supplies at the
connection to the tap.
5.3 Measure and record the temperature of the water discharging from the basin tap.
5.4 Isolate the cold water supply to the tap and monitor the mixed water temperature.
5.5 Measure and record the maximum mixed water temperature and the final temperature.
The final temperature found during the test should not exceed the value quoted in
Table 2.
5.6 Record all the equipment used during the commissioning.
Table 2
Application Maximum Set Mixed Water Temp.
Wash Hand Basin 43˚C
6 Ensure that the application, in which the basin tap will be used, is appropriate for the
approved designation. The above information must be recorded and updated on every
occasion when any work is carried out on the basin tap.
Application Recommended Set Mixed Water Temp.
Wash Hand Basin 41˚C

12
Maintenance
To ensure the Sola thermostatic basin tap maintains a high level of protection, we advise the
following in service testing is conducted (the same equipment used to commission the basin tap
initially must be used in the following tasks).
1 After a period of between 6 and 8 weeks from commissioning carry out the following;
1.1 Record the temperature of the hot and cold water supplies.
1.2 Record the temperature of the mixed water from the basin TAP.
2 If the mixed water temperature has changed significantly from the previous test results (e.g.
>1˚K), record the change and before resetting the mixed water temperature check that:
2.1 All the strainers are clean.
2.2 All the check valves are in good working order.
2.3 The isolation valves are fully open.
3 If the mixed water temperatures are acceptable, carry out the following:
3.1 Record the temperature of the hot and cold water supplies.
3.2 Record the temperature of the mixed water from the basin tap.
3.3 Isolate the cold water supply to the mixing valve and monitor the mixed water
temperature.
3.4 Record the maximum temperature achieved as a result of (3.3) and the final
temperature (the final temperature should not exceed the values quoted in table 2)
3.6 Record the equipment used during these tests.
4 If the mixed water temperature is greater than the values quoted in table 2 or the maximum
temperature exceeds the corresponding values from previous test results by more than 2˚K,
the basin tap must be serviced.
5 After a period of between 12 to 15 weeks from commissioning, carry out the sequence of
tests as described in Maintenance sections 1, 2, 3 and 4.
6 Dependant upon the results obtained from the first two series of tests; there are a number of
possible outcomes:
6.1 If no significant change in the mixed water temperatures (e.g. ≤ 1˚K) is recorded
between commissioning and Maintenance sections 1 or between commissioning and
Maintenance sections 5, the next in service testing should be carried out at a period of
24 to 28 weeks after initial commissioning.
6.2 If a small change (e.g. 1 to 2˚K) in the mixed water temperature is recorded in only one
of these periods, necessitating adjustment of the mixed water temperature, then the
next in service can be deferred to 24 to 28 weeks after commissioning.
6.3 If small changes (e.g. 1 to 2˚K) in the mixed water temperature are recorded in both of
these periods, necessitating adjustment of the mixed water temperature, then the next
in service test can be deferred to 18 to 21 weeks after commissioning.

13
Maintenance
6.4 If significant changes (e.g. > 2˚K) in the mixed water temperature are recorded in both
of these periods necessitating service work, then the next in service test should be
carried out at 18 to 21 weeks after commissioning.
7 The general principle to be observed after the first 2 or 3 in-service tests is that the intervals
for future tests should be set to those which previous tests have shown can be achieved
with no more than a small change in mixed water temperature.
8 In all areas periodic maintenance of the valve and associated fittings i.e. strainers, check
valves will ensure optimum performance levels are maintained.
Spares
A full range of spares are available for this product from Twyford.
PLEASE NOTE: Only genuine spares should be used.
Please leave this Manual for the User

14
Twyford Guarantee
At Twyford, we want to make things as easy as
possible for our customers. That’s why we
design products that are easy to fit and use,
and that are quality tested to make sure they
won’t let you down. It’s also why we offer solid
guarantees on all products, effective from the
date of purchase, to give you peace of mind.
Twyford mixer taps are covered by a parts only
2 year guarantee.
Guarantee Terms and Conditions
This guarantee is in addition to your statutory
and other legal rights and is subject to the
following conditions:
• The product was purchased within the
United Kingdom or Republic of Ireland.
• The guarantee applies solely to the original
purchaser with proof of purchase.
• The installation must allow ready access to
all products for the purpose of inspection,
maintenance or replacement.
• Repair under this guarantee does not
extend the original expiry date. The
guarantee on any replacement parts or
products ends at the original expiry date.
• Any part found to be defective during the
guarantee period will be replaced without
charge, providing that the product has been
installed in accordance with the instructions
given in this guide and used as the
manufacturer intended.
The guarantee does not cover damage or
defects caused by:
• General wear and tear (including special
non-chrome finishes; components such as
filters, seals, ‘O’ rings and washers).
• Incorrect installation.
• Repair using non-Twyford parts
• Accidental or wilful misuse
• Corrosion and the use of inappropriate
cleaning products.
• System debris including the build up of
limescale (which can be controlled
through regular servicing and
maintenance).
The guarantee does not cover compensation
for loss of use of the product or consequential
loss of any kind.
In the interests of continuous product
improvement, Twyford reserves the right to
alter product specifications without notice.
The Twyford Product Guarantee does not
affect your statutory rights as a consumer.
Need help?
If this product does not function correctly when
first used, contact Geberit Technical
Department on 01926 516800 where our
expert team of advisors will be able to offer you
help and advice.
Problems during the guarantee period
In the unlikely event that you encounter any
problems with the product during the
guarantee period, contact Geberit Technical
Department on 01926 516800 with your proof
of purchase and we will work to resolve the
problem quickly.
Technical support hotline
(Tel: [phone]) with access to fully trained
advisors who can offer installation advice, talk
you through quick maintenance checks, or
recommend the best course of action to fix any
problems with a product.
Contact Us
For any queries please contact us or visit our
website for further information:
Email: [email protected]
Website: www.twyfordbathrooms.com
Telephone: [phone]

E & O.E 06-07-18
Twyford
Lawton Road
Alsager
Stoke-on-Trent
ST7 2DF
UK
UK Technical Helpline
Telephone: [phone]
or 01270 879777
Email: [email protected]
Website: www.twyfordbathrooms.com