PEGLER TX402UAX Thermostatic Mixing Valve User Guide
- June 4, 2024
- PEGLER
Table of Contents
- TX402 When used as a TMV3 (TYPE3) valve: IMPORTANT INTRODUCTION NOTES
- water regulations
- approvals
- installation
- conditions of normal use
- fittings
- assembly procedure
- exploded view of tail pipe assembly
- exploded view of UA angle valve assembly
- application
- commissioning (TMV 3)
- commissioning test sequence
- in service testing (TMV 3)
- frequency of in-service testing
- IMPORTANT INTRODUCTION NOTES
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
VSH Tectite
THERMOSTATIC MIXING VALVE TX402, TX402UA, and TX402UAX
Installation Instructions & User Guide
TX402 When used as a TMV3 (TYPE3) valve: IMPORTANT INTRODUCTION NOTES
**All supply pipework must be thoroughly flushed at a high flow rate (.
1.5m/s) to dislodge and remove all dirt, debris, grease and flux. In accordance with BS EN 806-4:2010 & PD 855468:2015.**
The valves covered by these instructions have been tested and certified as being in compliance with BS 7942:2011 and NHS Estates Model Engineering Specification D 08.
Valves operating outside the requirements of these standards are not covered by the TMV3 Scheme and are not guaranteed to operate as Type 3 valves.
The installer should be aware of his duty of care and responsibility in ensuring that compliance with regulations is maintained. The valve is not guaranteed to function correctly to the TMV3 specification unless it is installed and used in accordance with these instructions.
Regular servicing is essential to ensure continued safe operation of this thermostatic mixing valve. The recommended service interval must be based on the valve response to the in-service cold water failure test results.
This Pegler Model TX402 in-line thermostatic mixing valve, available in 15mm and 22mm sizes, is intended to be fitted into applications where the reliable control of hot water temperature is necessary to prevent scalding. In the event of cold water supply failure, the product will shut off the hot water supply.
water regulations
The Pegler Model TX402 mixing valve must be installed in accordance with the regulations of the local water company and the Water Supply (Water Fittings) Regulations 1999.
approvals
This product is certified under the TMV3 scheme and has been independently tested by the recognised test laboratory WRc-NSF and is a Water Regulations Advisory Scheme (WRAS) approved product and listed in the Water Fittings and Materials Directory.
installation
Separate isolation valves must be installed on the hot and cold water inlet
supplies. To ensure proper performance of the thermostatic mixing valve, the
isolating valves should preferably be full bore and always be fully open
during operation.
The mixing valve is supplied with filter elements but it is advisable to
additionally install Y-strainers on the hot and cold water supplies. The
isolating valves and strainers should be installed as close as practicable to
the location of the mixing valve and should always be in an accessible
location.
Before installation, the hot and cold water supply systems must be thoroughly
flushed to remove any dirt/debris that may have accumulated. Failure to do so
may adversely affect the performance of the mixing valve.
conditions of normal use
Operating range | High Pressure | Low Pressure |
---|---|---|
Maximum static pressure | 10 bar* | 10 bar* |
Hot & cold flow pressure | 1.0 to 5 bar* | 0.2 to 1 bar* |
Hot & supply temperature | 55 to 65˚ | 55 to 65˚ |
Cold supply temperature | 5 to 20˚ | 5 to 20˚ |
Minimum hot inlet to mixed outlet temperature differential =10°C *3 bar with
PEX + PB Pipe
note: Valves operating outside these conditions can not be guaranteed by
the Scheme to operate as Type 3 valves.
The highest flow rates will be achieved under balanced pressure conditions,
but the pressure at the valve inlets must be within a ratio of 5:1 under flow
conditions and the size and layout of pipework and fittings must take this
into account.
fittings
Before installation, the system operating conditions of inlet pressures, hot
water temperature and hot and cold water flow rates should be determined and
confirmed to be within the expected conditions of normal use.
Valves must operate in either a high pressure setting or a low-pressure
setting valves are not capable of operation with, for instance hot water
supply in one pressure range and cold water supply in the other pressure
range. In these conditions it is necessary to either boost one pressure or
reduce the other so that both supplies are within a common pressure range.
Correct location of the mixing valve is important to ensure that it is
accessible for commissioning and servicing.
- The valve body is clearly marked with
C’ for Cold and a blue indicator and
H’ for Hot and a red indicator. The valve must be correctly connected to the respective supplies. - The use of sealing compounds must be avoided since they may intrude into the water supply and impair the valve performance.
The Pegler Model TX402 thermostatic mixing valve is supplied with the tail pieces, inlet filter screen, and main body gasket seals separately located in the packing box. Each tail piece comprises: a housing with union nut and an internally fitted, WRAS-approved non-return valve.
assembly procedure
- Unpack the main valve assembly and check that the bores are free of debris and the end sealing faces are clean.
- Unpack the two tailpieces and confirm they are complete with union nuts and sealing gaskets.
- Locate the sealing gaskets, insert them into the union nuts against the faces of the tailpieces and screw the union nuts onto the valve until a tight seal has been made.
- The inlet filter screens are pre-fitted in the tail pieces.
- Assemble the valve to the pipework and ensure the hot and cold water pipes have full penetration into the tailpiece.
exploded view of tail pipe assembly
The Pegler Model TX402UA mixing valve is optionally provided with angled
assemblies in lieu of the tailpiece arrangement shown above. This allows the
connections of the hot and cold water supplies to be parallel to the mixed
water outlet for ease of piping layouts. The angled valve assemblies
incorporate non-return valves, filters, isolation valves, and test points.
The assemblies comprise an integral full-bore ball valve and in-line strainer
in an angled housing. When this arrangement is used, the requirements for
isolation valves and Y-strainers previously mentioned are regarded as
fulfilled.
exploded view of UA angle valve assembly
application
The Pegler Model TX402 thermostatic mixing valve has been independently tested
by WRc-NSF against the requirements of BS 7942:2011 and NHS D08 and certified
as complying with the requirements of the TMV3 Scheme and is suitable for use
in the designations shown in the table below.
Valves approved for designation for use `HP’ only : If a water supply is
fed by gravity then the supply pressure should be verified to ensure the
conditions of use are appropriate for the valve.
Table 2 Required maximum set outlet temperatures at commissioning (TMV 3 Only).
Application | Designation | Maximum set mixed water temperature |
---|---|---|
Bidet | HP-B LP-BE | 38˚C |
Shower | HP-S LP-SE | 41˚C |
Washbasin | HP-W LP-WE | 41˚C |
Bath* | HP-T44 | 44˚C |
Bath* (assisted) | HP-T46 | 46˚C |
*22mm only
The range of available temperature adjustment is 35°C to 48°C. But the mixed
water temperature at the terminal fitting should never be set to a temperature
that exceeds the maximum set outlet temperature for the application (Table 2).
note: 46°C is the maximum recommended mixed water temperature from the
bath tap. The maximum temperature takes account of the allowable temperature
tolerances inherent in thermostatic mixing valves and temperature losses in
metal baths. 46°C is not a safe bathing temperature for adults or children.
The British Burns Association recommends 37°C to 37.5°C as a comfortable
bathing temperature for children. In premises covered by the Care Standards
Act 2000, the maximum mixed water outlet temperature is 43°C.
commissioning (TMV 3)
The valve must be commissioned under normal site system conditions and after
establishing supply conditions with the hot and cold water supplies open,
leave the system running to allow temperatures and pressures to stabilise and
be checked.
Prior to commencing commissioning, the following checks should be carried out.
- The designation of the thermostatic mixing valve matches the application.
- The supply pressures and temperatures are within the operating range of the valve.
- Isolating valves and strainers are provided.
- The supply temperatures are within the range permitted for the valve and by guidance information on the prevention of legionella etc.
If all these conditions are met, proceed to set the temperature as described
below. The Pegler model TX402 thermostatic mixing valve is supplied factory
set at 43°C but the valve may be simply adjusted after installation.
The mixed water temperature at the terminal fitting must never exceed the
maximum temperature setting for the particular application (See Table 2).
Note, It is not possible to install one thermostatic mixing valve to supply
two differing applications unless the temperature of the higher setting is
limited to that of the lower application.
-
Remove the plastic protective cap on top of the valve with a 2½mm Allen key or you can request from our customer service department on 0800 156 0050.
-
Using a close-fitting spanner, reduce the mixed outlet temperature by turning clockwise.
-
Increase the mixed water outlet temperature by turning counterclockwise.
When the valve has been installed with the correct conditions of use it is
advised that the valve is subjected to exercise prior to the commissioning at
the application temperature. With hot and cold water flowing through the
valve, operate the valve from full cold to full hot at least three times.
With the valve at the full cold position bring the valve to the correct
application temperature by turning the spanner counterclockwise. If the valve
overshoots this temperature, return the valve to the full cold condition, and
reset it to the correct temperature +0-2°C. Do not set a valve on a lowered
temperature as this will not provide consistent operation.
When the valve is set to the required temperature for the application carry
out 5 cold water isolation tests to further exercise the valve.
commissioning test sequence
After adjusting the temperature of the mixed water in accordance with the valve application (see Table 2) and the carry out the following sequence:
- Record the temperature of the hot and cold water supplies.
- Record the temperature of the mixed water at the largest draw-off flow rate.
- Record the temperature of the mixed water flow at a smaller draw-off flow rate, which shall be measured.
- Isolate the cold water supply to the mixing valve and monitor the mixed water temperature recording the maximum temperature achieved and the final stabilised temperature.
- Record the equipment, thermometer etc. used for the measurements.
- After correct commissioning secure the protective cap using the supplied screw.
Note: The final stabilised temperature should not exceed the values in Table 3.
Table 3 Guide to maximum stabilised temperatures recorded during commissioning
Application | Mixed water temperature |
---|---|
Bidet | 40˚C |
Shower | 43˚C |
Washbasin | 43˚C |
Bath (44˚C fill) | 46˚C |
Bath (44˚C fill) | 48˚C |
in service testing (TMV 3)
The purpose of in-service testing is to regularly monitor and record the
performance of the thermostatic mixing valve. Deterioration in performance can
indicate the need for service work on the valve and/or water supplies.
Carry out the test sequence detailed below using the same or equivalent
equipment as used for commissioning the valve.
- Check the designation of the thermostatic valve matches the application.
- Check that the supply pressures and temperatures are within the operating range of the valve.
- Check that the supply temperatures are within the range permitted for the valve and by guidance information on the prevention of legionella etc
- Check there have been no significant changes in inlet supply temperatures and pressures since commissioning or the previous in service test. If significant changes have occurred it is recommended to re-commission the valve.
If the mixed water temperature has changed significantly from the previous test results (e.g.>1°C), record the change and before re-adjusting the mixed water temperature carry out the following checks;
- All in-line or integral strainers are clean
- Any in-line or integral non-return valves or other anti-backsiphonage devices are in good working order.
- Any isolation valves are fully open.
With an acceptable mixed water temperature complete the Commissioning test
sequence detailed above. If the final mixed water temperature is greater than
the values in Table 3 and/or the maximum temperature exceeds the corresponding
value from the previous test results by more than about 2°C the need for
service work is indicated (see TMV servicing and cleaning instructions).
In-service tests should be carried out with a frequency which identifies a
need for service work before an unsafe water temperature can result.
frequency of in-service testing
6 to 8 weeks after commissioning carry out the test sequence detailed above.
12 to 15 weeks after commissioning carry out the test sequence detailed above.
Depending on the results obtained, the following course of actions must be
followed:
- If no significant changes (e.g.<1 °C) in mixed water temperature are recorded between commissioning and testing at 6 to 8 weeks, or between commissioning and testing at 12 to 15 weeks, the next in-service test can be deferred to 24 to 28 weeks after commissioning.
- If small changes (e.g.1 to 2 °C) in mixed water temperature are recorded in only one of these periods, necessitating adjustment of the mixed water temperature, then the next inservice test can be deferred to 24 to 28 weeks after commissioning.
- If small changes (e.g.1 to 2 °C) in mixed water temperature are recorded in both of these periods, necessitating adjustment of the mixed water temperature, then the next in-service test should be carried out at 18 to 21 weeks after commissioning.
- If significant changes (e.g. >2 °C) in 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. The general principle to be observed after the first 2 or 3 in-service test is that the intervals of 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. It is recommended that In-Service Tests are carried out once every 6 months as a minimum.
note: If there is a residual flow during the commissioning or in-service
test during the 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 as defined in Table 2.
Temperature readings should be taken at the normal flow rate after allowing
the system to stabilise. The sensing part of the thermometer probe must be
fully submerged in the water that is to be tested.
Any TMV that has been adjusted or serviced must be re-commissioned and re-
tested in accordance with the manufacturer’s instructions.
TX402 when used as a TMV2 (TYPE 2) valve
IMPORTANT INTRODUCTION NOTES
The valves covered by these instructions have been tested and certified as
being in compliance with BS EN 1111:1999 and BS EN 1287:1999.
Valves operating outside the requirements of these standards are not covered
by the TMV2 Scheme and are not guaranteed to operate as Type 2 valves.
The installer should be aware of his duty of care and responsibility in
ensuring that compliance with regulations is maintained. The valve is not
guaranteed to function correctly to the TMV2 specification unless it is
installed and used in accordance with these instructions. Regular servicing is
essential to ensure continued safe operation of this thermostatic mixing
valve. The recommended service interval is no greater than 12 months.
This Pegler Model TX402 in-line thermostatic mixing valve, available in 15mm
and 22mm sizes, is intended to be fitted into applications where the reliable
control of hot water temperature is necessary to prevent scalding. In the
event of cold water supply failure, the product will shut off the hot water
supply.
water regulations
The Pegler Model TX402 mixing valve mustbe installed in accordance with the regulations of the local water company and the Water Supply (Water Fittings) Regulations 1999.
approvals
This product is certified under the TMV2 scheme and has been independently
tested by an approved testing laboratory WRc-NSF and is a Water Regulations
Advisory Scheme (WRAS) approved product and listed in the Water Fittings and
Materials Directory.
installation
Separate isolation valves must be installed on the hot and cold water inlet
supplies. To ensure proper performance of the thermostatic mixing valve, the
isolating valves should preferably be full bore and always be fully open
during operation.
The mixing valve is supplied with filter elements but it is advisable to
additionally install Y-strainers on the hot and cold water supplies. The
isolating valves and strainers should be installed as close as practicable to
the location of the mixing valve and should always be in an accessible
location.
systems must be thoroughly flushed to remove any dirt/debris that may have
accumulated. Failure to do so may adversely affect the performance of
themixing valve.
conditions of normal use
Operating range | BS EN1111 high pressure | BS EN1287 low pressure |
---|---|---|
Maximum static pressure | 10 bar* | 10 bar* |
Hot & cold flow pressure | 0.5 to 5 bar* | 0.1 to 1 bar |
Hot supply temperature | 55 to 65˚C | 55 to 65˚C |
Cold supply temperature | ≤ 25˚C | ≤ 25˚C |
Mixed water temperature | maximum 46˚C | maximum 46˚C |
Minimum hot inlet to mixed outlet temperature differential =10°C *3 bar with PEX + PB Pipe
note: Valves operating outside these conditions can not be guaranteed by
the Scheme to operate as Type 2 valves.
The highest flow rates will be achieved under balanced pressure conditions,
but the pressure at the valve inlets must be within a ratio of 5:1 under flow
conditions and the size and layout of pipework and fittings must take this
into account.
fitting
Before installation, the system operating conditions of inlet pressures, hot
and cold inlet temperature, and hot and cold water flow rates should be
determined and confirmed to be within the expected conditions of normal use
shown in Table 4.
Valves must operate in either a high-pressure setting or a low-pressure
setting. These valves are not capable of operation with, for instance, hot
water supply in one pressure range and cold water supply in the other pressure
range. In these conditions, it is necessary to either boost one pressure or
reduce the other so that both supplies are within a common pressure range.
If your water supply cannot meet these conditions then the valve cannot be
guaranteed to operate as a Type 2 valve.
Operating pressures above 5.0 Bar will require the installation of a pressure-
reducing valve. Correct location of the mixing valve is important to ensure
that it is accessible for commissioning and servicing.
-
The valve body is clearly marked with
C’ for Cold and a blue indicator and
H’ for Hot and a red indicator. The valve must be correctly connected to the espective supplies. -
The use of sealing compounds must be avoided since they may intrude into the water supply and impair the valve performance.
-
The valve must be so installed that it is readily accessible for commissioning and maintenance when being installed in accordance with TMV2.
-
The valve must be installed with isolation valves on both the hot and cold water systems as close as possible to the valve; so as to allow the valve to be commissioned and tested correctly.
-
The valve is supplied with integral strainers on the hot and cold water supplies therefore in-line strainers should not be required.
-
The valve is fitted with integral “listed” non-return valve cartridges which command the water supply, therefore the thermostatic valve is protected against cross-flow due to unbalanced line pressures as required by the Water Supply (Water Fittings) Regulations 1999.
assembly Procedure
- Unpack the main valve assembly and check that the bores are free of debris and the end sealing faces are clean.
- Unpack the two tailpieces and confirm they are complete with union nuts and sealing gaskets.
- Locate the sealing gaskets, insert them into the union nuts against the faces of the tailpieces and screw the union nuts onto the valve until a tight seal has been made.
- Inlet filter screens are pre-fitted in the tail pieces.
- Assemble the valve to the pipework and ensure the hot and cold water pipes have full penetration into the tailpiece.
exploded view of tailpiece assembly
The Pegler Model TX402UA mixing valve is optionally provided with angled
assemblies in lieu of the tailpiece arrangement shown above. This allows the
connections of the hot and cold water supplies to be parallel to the mixed
water outlet for ease of piping layouts.
The assemblies comprise an integral full-bore ball valve and in-line strainer
in an angled housing. When this arrangement is used, the requirements for
isolation valves and strainers previously mentioned are regarded as fulfilled.
exploded view of UA angle valve assembly
application
The Pegler Model TX402 thermostatic mixing valve has been independently tested
by WRc-NSF against the requirements of BS EN 1287 (Low Pressure-LP) and BS EN
1111 (High Pressure-HP) and certified as complying with the requirements of
the TMV2 Scheme and is suitable for use in the designations shown in the table
(next page).
Valves approved for designation for use `HP’ only:If a water supply is fed by
gravity then the supply pressure should be verified to ensure the conditions
of use are appropriate for the valve.
Table 5 Recommended set mixed water outlet temperatures
Application | Pressure | Maximum set mixed water temperature |
---|---|---|
15mm | 22mm | |
Shower | HP | LP & LP |
Washbasin | HP | HP & LP |
Bidet | HP | HP & LP |
Bath* (tub) | HP | HP |
The above temperatures are recommended by the Thermostatic Mixing Valve
(manufacturers) Association as relevant settings for the varying applications
shown. This is the maximum commissioning temperature but valves may exceed
this by 2°C in use.
The range of available temperature adjustment is 35°C to 48°C but 46°C is the
maximum recommended mixed water temperature from a bath tap. The maximum
temperature takes account of the allowable temperature tolerances inherent in
thermostatic mixing valves and temperature losses in metal baths. 46°C is
not a safe bathing temperature for adults or children.
The British Burns Association recommends 37°C to 37.5°C as a comfortable
bathing temperature for children. In premises covered by the Care Standards
Act 2000, the maximum mixed water outlet temperature is 43°C.
commissioning (TMV 2)
The valve must be commissioned under normal site system conditions and after
establishing supply conditions with the hot and cold water supplies open,
leave the system running to allow temperatures and pressures to stabilise and
be checked.
Prior to commencing commissioning, the following checks should be carried out.
- The designation of the thermostatic mixing valve matches the application.
- The supply pressures and temperatures are within the operating range of the valve.
- Isolating valves and strainers are provided. If all these conditions are met, proceed to set the temperature as described below.
The Pegler TX402 thermostatic mixing valve is supplied factory set at 43°C but the valve may be simply adjusted after installation. The set mixed water temperature at the terminal fitting must never exceed 46°C.
- Remove the plastic protective cap on top of the valve with a 2½mm allen key or you can request from our customer service department on 0800 156 0050.
- Using a close fitting spanner, reduce the mixed outlet temperature by turning clockwise.
- Increase the mixed water outlet temperature by turning counter clockwise.
When the valve has been installed with the correct conditions of use it is
advised that the valve is subjected to exercise prior to the commissioning at
the application temperature. With hot and cold water flowing through the
valve, operate the valve from full cold to full hot at least three times.
With the valve at the full cold position bring the valve to the correct
application temperature by turning the spanner counter clockwise. If the valve
overshoots this temperature, return the valve to the full cold condition, and
reset it to the correct temperature +0-2°C. Do not set a valve on a lowered
temperature as this will not provide consistent operation.
When the valve is set to the required temperature for the application carry
out 5 cold water isolation tests to further exercise the valve.
- Set the mixed water temperature to the required value. It is advisable to use a calibrated digital thermometer for checking the inlet and outlet temperatures.
- Measure and record the temperature of the hot and cold water supplies at the inlets to the valve.
- Measure and record the temperature of the water discharging from the valve at the greatest draw-off flow rate.
- In the absence of other temperatures being specified those detailed in Table 5 are the desired settings.
Once the required mixed outlet temperature has been achieved, isolate the cold
water supply and monitor and record the mixed water temperature including the
maximum and final temperatures achieved. The mixed water temperature should
never exceed 46°C.
After correct commissioning secure the protective cap using the supplied
screw.
Record all the equipment used during commissioning.
in-service testing (TMV 2)
The Pegler Model TX402 thermostatic mixing valve will provide satisfactory
service and a high level of protection, provided it is maintained and
subjected to In- Service Testing.
Approximately 6-8 weeks after commissioning, the following tests should be
undertaken.
- Check the temperature of the hot and cold water supplies – RECORD
- Check the temperature of the mixed water temperature at the greatest draw off flow rate RECORD
- Check there have been no significant changes in inlet supply temperatures and pressures since commissioning or the previous in-service test. If significant changes have occurred it is recommended to re-commission the valve.
If the mixed water temperature has significantly changed from that measured at
installation
RECORD the change and before making any adjustments to the valve confirm
that:-
- Strainer elements in the hot and cold water supplies are clean and undamaged.
- Non-return valves are clean and operating correctly.
- Isolation valves are operating correctly and are set in the fully open position.
If the mixed water temperature is acceptable, the following additional
observations should be made:-
Isolate the cold water supply and RECORD the maximum temperature achieved.
After 5 seconds, if water is still flowing RECORD the temperature of the flow.
Restore the cold water supply and RECORD the stabilised mixed water outlet
temperature.
- If there is no significant change to the stabilised set outlet temperature (±2°C or less deviation from the original setting) and the fail safe shut-off is functioning, then the valve is working correctly and no further service work is required.
- If the maximum mixed water temperature exceeds the previous test results by more than 2°C then the need for service work on the valve is indicated.
- The equipment used in these In-Service Tests should be RECORDED and should preferably be the same as that used at installation.
note: 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 (See Table 5).
Temperature readings should be taken at the normal flow rate after allowing
the system to stabilise. The sensing part of the thermometer probe must be
fully submerged in the water that is to be tested. Any TMV that has been
adjusted or serviced must be recommissioned and re-tested in accordance with
the manufacturer’s instructions.
In the absence of any other instruction or guidance, it is recommended that
In-Service Tests are carried out once every 12 months as a minimum. If the
temperature is outside of the expected range it will be necessary to remove
and clean the valve in accordance with the following instructions.
TMV cleaning and servicing instructions (TMV 2 & TMV 3)
Most domestic water supplies contain calcium which will separate out when the
water is heated in a system. The degree and speed of scaling may vary
depending on factors such as water flow rates, system design, the hardness of
the water and the temperature to which the water is heated. Deposits of scale
may over time form in the valve, particularly at the hot inlet. The formation
of the scale may adversely affect the performance of the valve which will be
detected during the in-service testing. If this occurs it will be necessary to
remove the valve for de-scaling and servicing.
n.b. Excessive chemical dosing may result in internal damage to valve
components and remove lubrication leading to valve failure.
- Isolate the hot and cold supply.
- Remove the valve to a clean working area.
- Remove the protective cap.
- Unscrew the headwork of the valve.
- Carefully remove the element and valve assembly and put to one side.
- Remove the main spring and flow guide and carefully put to one side.
- Inspect the components for contamination or damage.
- Clean or replace as necessary.
- Remove the two `0′ rings.
- Clean the valve body and headwork using a propriety de-scaler.
- Thoroughly rinse the body and headwork in clean water.
- Carefully fit new o rings from the service kit taking care to ensure they are not damaged and are correctly located.
- Lubricate the o rings with the lubricant provided.
- Re-fit the flow guide and spring lubricating the flow guide around the greatest diameter with the lubricant provided.
- Lubricate the shuttle valve with the lubricant provided.
- Re-fit the shuttle valve and element assembly.
- Re-fit the headwork ensuring correct tightening.
- Re-fit the valve assembly.
- If after cleaning the valve, and replacing the `0′ ring seals, the valve does not function correctly, it may be necessary to replace the thermal element.
exploded view of TMV assembly
spares
In order to ensure that the Model TX402 thermostatic mixing valve continues to
provide satisfactory service, only GENUINE Pegler spare parts must be used.
Application | Designation | Maximum set mixed water temperature |
---|---|---|
A-1 | Available from our customer service department on | |
0800 156 0050 | Purple TMV3 protective cap complete with screw | |
B | Available from our customer service department on | |
0800 156 0050 | Hexagon key | |
C | 854454 | Service kit |
D | 854456 (15mm) and 854457 (22mm) | Sealing washer |
TX402UAX
The TX402UAX is an approved variant of the TX402UA, providing an additional
outlet on the angle valve. This allows for a connection to `cold water
outlets’ without affecting the inlet supply to the mixing valve. The
connection can be blanked to enable the valve to be used in the two-inlet,
one-outlet mode.
Tectite installation instructions
Always cut the tube square, using a rotary tube cutter whenever possible.
Ensure the cutter wheel is appropriate for the material being cut.
If you are using PEX or PB pipe cut the pipe using pipe shears.
Deburr the tube end, both internally and externally to create a 1mm chamfer on
the outside of the tube.
Check the tube ends are free from damage and clean, wiping away any swarf to
avoid damaging the `0′ ring on tube insertion. Tube end must also be free from
stickers, tape and adhesive residues.
Where using PEX or PB you must use always insert a support liner ensuring it
is the correct liner as specified by the pipe manufacturer. If the pipe has
been used on previous installations you will need to cut it back to behind the
teeth or score marks.
Mark the socket depth with a marker.
fitting socket depths for Tectite:
Size | Classic, PRO & 316 |
---|---|
15mm | 23mm |
22mm | 27mm |
For chrome plated copper tube you must scribe the tube using the correct
Tectite Scribing tool.
Select the correct type and size of fitting for pipework.
The fitting should be kept in its bag until point of use to protect the `0′
ring.
Check the fitting ensuring the grab rings/’O’rings have not been contaminated
with grit or debris.
Remove any protective caps fitted to the socket.
Insert the tube/pipe firmly with a slight twisting action until it reaches the
tube stop with a positive “click”.
Ensure the depth insertion mark corresponds with the mouth of the fitting,
then pull firmly on the tube/ pipe to ensure the fitting is secure.
demounting
Place the forks of the disconnecting tool around the fitting assembly. The
fork side carrying the Tectite brand logo should be positioned around the
tube/ pipe with the opposite side around the neck of the fitting.
Squeeze the disconnecting tool with one hand until the release collar in the
fitting is compressed. With the other hand, twist out the tube/pipe using the
thumb as a lever against the tool to assist disconnection.
Check the fitting and tube/pipe for damage before remaking the joint. The
plastic disconnecting clip may be used where only an occasional disconnecting
facility is needed.
bringing together valves, fittings, and pipes into one complete pipe-work system. It combines the best world-class elements of modern connection and valve technology, incorporating press, push, groove, compression, capillary, and threaded solutions for copper, steel, multilayer, and plastic pipes, with an emphasis on delivering heat-free jointing.
head office
Aalberts Integrated Piping Systems Ltd
St. Catherine’s Avenue / Doncaster
South Yorkshire / DN4 8DF / England
tel: +44 (0) 1302 560 560
fax: +44 (0) 1302 560 203
email: info@pegler.co.uk
www.pegler.co.uk
All brand names and logo styles are registered trademarks. Maintaining a policy in this publication without prior notice. Lit. Ref: 880200
Aalberts Integrated Piping Systems Ltd
St. Catherine’s Avenue / Doncaster South Yorkshire / DN4 8DF / England
www.pegler.co.uk
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>