product manual smva09 adjustable shower valve - … · interconnecting and sealing pipe ends ......

Product Manual

SMVA09

Adjustable Shower Valve

Wallgate Ltd. tel: +44 (0) 1722 744594 Crow Lane, Wilton, fax: +44 (0) 1722 742096 Salisbury, Wiltshire, email: [email protected] SP2 0HB, England web: www.wallgate.com

Wallgate®

PRODUCT MANUAL

ORIGINAL INSTRUCTIONS

© 2015Wallgate Ltd.

mailto:[email protected]

Product Manual SMVA09 Adjustable Shower Valve Wallgate 2015

2 |Revision 1.0

For technical advice, or further information on Wallgate products, contact our Customer Services

Department.

Tel: (01722) 744594

Fax: (01722) 742096/742933 (Service)

Email: [email protected]

[email protected]

www.wallgate.com

Crow Lane, Wilton, Salisbury, Wiltshire, SP2 OHB, England.

AS 3498

Certificate No 23196

The thermostatic water valve is

approved by WRAS & is TMV3

certified by the manufacturer:

WRAS certificate No: 1209103

Build cert TMV3 cert:BC1605/0615




3 |Revision 1.0

Table of Contents

1. Disclaimer .............................................................................................................................................. 4

2. Conventions .......................................................................................................................................... 5

2.1 Warning ......................................................................................................................................... 5

2.2 Note .............................................................................................................................................. 5

2.3 Numbered procedures .................................................................................................................. 5

2.4 Bullet lists ...................................................................................................................................... 5

2.5 Menu items ................................................................................................................................... 5

3. Glossary ................................................................................................................................................. 6

4. Overview ............................................................................................................................................... 7

5. Installation and Commissioning ............................................................................................................ 8

5.1 Package Contents .......................................................................................................................... 8

5.2 Site Preparation ............................................................................................................................ 8

5.2.1 Mounting guidelines ............................................................................................................. 8

5.2.2 Typical Installation Drawings .............................................................................................. 10

5.3 Preparing the Thermostatic Shower Valve ................................................................................. 11

5.4 Mounting the Shower Valve Assembly ....................................................................................... 12

5.5 Water Connections ..................................................................................................................... 13

5.6 Commissioning for use ................................................................................................................ 14

5.7 Technical Specifications .............................................................................................................. 14

6. User and Maintenance Instructions .................................................................................................... 15

6.1 Operation .................................................................................................................................... 15

6.2 Maintenance ............................................................................................................................... 15

7. Related Documentation ...................................................................................................................... 17

8. HORNE 15 THERMOSTATIC MIXING VALVE TYPE TPV2-1 ................................................................... 18


4 |Revision 1.0

1. Disclaimer

The specifications of Wallgate products can change without notice because of developments in design and manufacturing.


5 |Revision 1.0

2. Conventions

Certain conventions are used in this manual to make it easier to read and understand. They are given in the sections below.

2.1 Warning

A warning with white text on a red background is used to give information about hazards that can cause injury or death. Read and understand these warnings before you install and commission the SMVA09 Shower valve. Failure to heed these warnings can have serious consequences.

WARNING! This is a warning!

2.2 Note

A note with black text on a yellow background is used to draw your attention to important and useful information.

NOTE: This is a note.

2.3 Numbered procedures

Steps in procedures are numbered, starting from 1.

1. This is step 1.

2. This is step 2 etc.

2.4 Bullet lists

A bullet list is used to give information that is not sequential.

2.5 Menu items

Menu items, submenu items and settings, where available, are given in bold.


6 |Revision 1.0

3. Glossary The glossary lists all words, abbreviations and technical terminology used in this manual, along with

a short description of these terms.

Term Description

Piezoelectric touch button A piezoelectric touch button converts the force applied to the face of the button into an electrical signal. A piezoelectric touch button is used on the SMVA09 to operate the water solenoid valve to the shower nozzle through an electronic control unit.

BSP The British Standard Pipe (BSP) thread is a family of standard screw thread types that has been adopted internationally for interconnecting and sealing pipe ends by mating an external (male) with an internal (female) thread.1

TMV3 Thermostatic mixer valve that is approved to the TMV3 scheme.

D 08 NHS Model Engineering Specification. For mixing valves in use in healthcare premises.

http://en.wikipedia.org/wiki/Screw_thread

http://en.wikipedia.org/wiki/Screw_thread

http://en.wikipedia.org/wiki/Gender_of_connectors_and_fasteners

http://en.wikipedia.org/wiki/Gender_of_connectors_and_fasteners


7 |Revision 1.0

4. Overview

The SMVA09 is a temperature adjustable thermostatic mixer valve assembly which includes a piezoelectric touch button for activation.

The thermostatic mixer valve is WRAS approved & a TMV3 scheme approved valve.

The valve is adjustable through a temperature range of 35°C to 46°C. The valve is factory set to control the water temperature to approximately 41°C but this MUST be verified on site during commissioning. (Refer to the Horne TPV2-1 manual supplied in section 8 of this manual.

The valve assembly can be used with Wallgate wall or ceiling mounted shower nozzles, (sold separately)

The Piezoelectric touch button is designed for use with one of a range of controllers supplied by Wallgate, (sold separately, refer to section 7).

The valve assembly and shower nozzle should be used with a water valve pack supplied by Wallgate, (sold separately).


8 |Revision 1.0

5. Installation and Commissioning

5.1 Package Contents Before you begin the installation, make sure that you have the following items:

1 Product manual

Horne TPV2-1 thermostatic valve manual

1 SMVA09 Shower Mixer Valve Assembly comprising of thermostatic valve & stainless steel fascia plate & four M6 mounting bushes.

2 Wall clamping brackets.

4 M6 x 200mm wall fixings.

4 M6 fixing nuts.

NOTE: An electronic control unit & solenoid water valve with cable are supplied separately as an option. Various control options are available, contact the Wallgate sales desk for more information.

5.2 Site Preparation

5.2.1 Mounting guidelines

The mixer valve assembly must be fitted to a vertical flat surface.

Hot and cold water supplies are necessary. Refer to the Horne TPV2-1 thermostatic valve manual in section 8 of this manual.

Prepare the wall aperture for either front or rear fitting as detailed in Figure 1. An access panel above the valve aperture for front fix installation will be required for access to the valve plumbing terminations & for maintenance of the valve.


9 |Revision 1.0

Figure 1 SMVA09 Wall aperture preparation.


10 |Revision 1.0

5.2.2 Typical Installation Drawing:

Note:

The following items shown on the above drawing are sold separately:

Electronic control unit, WDC100 or WDC200.

Shower nozzle.

Water valve & cable pack.


11 |Revision 1.0

5.3 Preparing the Thermostatic Shower Valve

The thermostatic shower valve requires assembly of the wall fixing threaded studs as per the following the instructions below &shown on Figure 2:

1. Fit the 4 x M6 threaded studs (Item 3) into the stud connectors (Item 2) on the rear of the plate. Tighten each stud to 3Nm, a thread lock can be applied (Loctite 270).

2. Connections to the inlet and outlet of the thermostatic mixing valve should be made at this stage if the wall thickness is such that it prevents easy access for completing the fitting of the pipes. (The valve Hot & Cold water inlets are 15mm compression type fittings & the outlet is ½” BSP female).

Figure 2 Components of SMVA09


12 |Revision 1.0

5.4 Mounting the Shower Valve Assembly

To mount the shower valve to the wall for rear fitting:

1. Pass the assembly through the aperture prepared in the wall.

NOTE: Ensure the cable from the Piezoelectric touch button passes freely though the wall aperture and does not become pinched or trapped.

From the other side of the wall:

1. Assembly the clamping brackets (Item 4) onto the studs.

2. Thread the M6 nuts (Item 5) onto the studs.

3. Hand tighten the nuts to pull the brackets against the rear of the wall.

4. Ensure the assembly is centrally positioned in the wall aperture and then tighten the nuts to 6Nm (Max 7Nm).

5. Plug the Piezoelectric touch button cable into the Wallgate control unit. For details on the control unit refer to relevant product manual.

NOTE: Exceeding the torque setting for the M6 retaining nuts can result in damage to the valve mounting plate.


13 |Revision 1.0

5.5 Water Connections

NOTE: Before you carry out the following steps, flush the cold & hot water supply pipes to remove any debris and trapped air.

NOTE: Fit a Y strainer in the water supply feed pipes before connection to the shower valve, especially on older installations where loose particles from ageing water pipes can cause a blockage and/or damage to the valve.

NOTE: Fit a service isolating tap (Not supplied) on each water supply feed to the valve.

NOTE: Use of any pipe sealing compound should be avoided to prevent potential blockages & damage to the thermostatic shower valve & water solenoid valve.

1. Refer to section 8 for the full details on connecting the valve to the hot & cold water supplies, the information must be followed carefully to ensure the correct installation, commissioning and operation of the thermostatic mixer valve.

2. It is recommended that water pipe & fittings are of a non plastic type & use of flexible hoses should be avoided in healthcare installations.

3. Complete the water supply connections for the hot and cold water supplies to the thermostatic mixer valve.

4. Referring to the installation drawing section 5.2.2. Using 15mm size copper tube & a suitable ½” BSP male fitting, make the water outlet connection from the valve outlet to the inlet on the solenoid valve & then from the outlet of the solenoid valve to the shower nozzle. Note to ensure the correct orientation of the solenoid which has an arrow on its body to indicate the flow direction, also ensure the supplied strainer is fitted to the valve inlet. The plastic nuts should be tightened to 4Nm on the inlet & outlet of the solenoid. The pipe run from the solenoid outlet to the shower nozzle must not exceed 2m in length so as to comply with the requirements of HTM64 for prevention control of Legionella & other bacteria.


14 |Revision 1.0

5.6 Commissioning for use

To commission the SMVA09:

1. The thermostatic shower valve should be commissioned by following the information in section 8 of this product manual.

2. Follow the instructions in the Wallgate controller manual for operating the purge cycle to assist with commissioning of the shower.

5.7 Technical Specifications Table 1. Technical specifications

For all technical specifications and commissioning instructions for the thermostatic mixer valve, refer to section 8.

Weight 3 Kg

Dimensions Fascia plate 220mm (W) x 145mm (H) Valve depth 71mm

Material fascia plate Grade 316 stainless steel.

Regulatory compliance

WRAS & TMV3 certified.


15 |Revision 1.0

6. User and Maintenance Instructions

The thermostatic mixer valve should be maintained by following the maintenance instructions in section 8 of this manual.

Wallgate offers a comprehensive service package, details of which can be obtained from our customer service department. A spare parts service is also available.

Any service or repair work must be done by a qualified engineer. During the warranty period, the service or repair must only be done by a Wallgate engineer or appointed service agent. Refer to the Wallgate terms and conditions for warranty information.

6.1 Operation

1. To start the shower, lightly press on the Piezoelectric touch button. The shower will run for a pre-determined time of 60 seconds, which is adjustable in the settings for the Wallgate controller. (Refer to controller product manual for details of how to make adjustments.)

2. To adjust the shower temperature, turn the shower knob, anti-clockwise to increase the temperature and clockwise to reduce it. The maximum set temperature will have been set during installation commissioning or at maintenance intervals to 41°C.

3. Various parameters, such as run time, lockouts & hygiene flushes are adjustable using the Wallgate controller. Refer to the appropriate controller product manual for information on adjusting settings.

6.2 Maintenance

General wear mainly affects the components of the shower nozzle in contact with water. If the unit is installed in a hard water area, lime scale removers must be used on the shower nozzle.

Stainless steel valve plate:

To clean Stainless Steel, wash with soap or mild detergent and warm water followed by a clean water rinse.

For stubborn spots, stain, light discoloration and water marking, a mild, non-abrasive cream and polish can be used. Apply with a soft cloth or sponge and rinse off with clean water.


16 |Revision 1.0

Particular care should be taken when cleaning the blue / red graphics, to avoid damage by abrading the coloring.

Always avoid using coarse abrasive materials such as wire wool, which can both scratch the surface and leave rust stains due to metal particles left on the surface.

Avoid domestic bleaches or bleach soaked cleaning cloths, even weak solutions, as this will, over time, cause corrosion and pitting.

Refer to the maintenance details in section 8 for ongoing maintenance and in-service testing of the TPV2-1valve.


17 |Revision 1.0

7. Related Documentation

The SMVA09 can be used with any of the following control units:

WDC100. For more information on this control unit, refer to the WDC100 product manual.



Horne 15 Thermostatic mixing valve type TPV2-1 manual (section 8 of this manual).


18 |Revision 1.0

8. HORNE 15 THERMOSTATIC MIXING VALVE TYPE TPV2-1

INSTALLATION, COMMISSIONING, OPERATING AND MAINTENANCE INSTRUCTIONS

APPROVALS

The HORNE 15 Type TPV2-1 has been independently tested by WRc-NSF and approved to all the

requirements of NHS Model Engineering Specifications D 08 Thermostatic Mixing Valves (Health

Care Premises) to the following designations and for the following applications.

APPLICATION DESIGNATION HOT & COLD

WATER PRESSURES WATER

TEMPERATURES

SHOWER LP-S HP-S

0.2 to 1 BAR 1 to 5 BAR HOT: 52°C - 65°C

COLD: 5°C - 20°C WASHBASIN

LP-W HP-W

0.2 to 1 BAR 1 to 5 BAR

The hot and cold pressures do not need to be equal. See 1.3 overleaf. The HORNE 15 Type TPV2-1 is a Type 3 Thermostatic Mixing Valve according to NHS Estates Health Guidance Note "Safe" hot water and surface temperatures. It is also WRAS approved.

Normal Conditions of Use for Type 3 Valves

High Pressure Low Pressure

Maximum Static Pressure 10 bar 10 bar

Flow Pressure, Hot & Cold 1 to 5 bar 0.2 – 1 bar

Hot Water Supply Temperature 52 – 65C 52 – 65C

Cold Water Supply Temperature 5 – 20C 5 – 20C

Minimum Temperature Differential

(Hot – Mixed, Mixed – Cold)

5K

(K = degrees C)

5K

(K = degrees C)

1. INSTALLING THE HORNE 15 Type TPV2-1

1.1 Check that the HORNE 15 Type TPV2-1 is approved for the intended application (see table

above).

1.2 The HORNE 15 Type TPV2-1 is intended for panel mounting, but it is shown unmounted in

the instructions to enhance visibility of the product for the purposes of explanation.

1.3 Install the HORNE 15 TYPE TPV2-1 as close as possible to the outlet to comply with HTM

04-01. The dead leg from the HORNE 15 TYPE TPV2-1 to the outlet should not exceed 2

metres.

1.4 Check that the supply pressures are within the ranges given above. If the hot and cold water

supplies are of unequal pressures, then the lower of the two pressures should not be less

than 0.2 bar maintained pressure.

1.5 Check that the supply temperatures are within the ranges stated above.

1.6 Isolating valves must be fitted to the hot and cold water supply pipes close to the inlets of the

TMV. The isolating valve on the cold water supply pipe may also be used to isolate the cold

water tap.

1.7 The HORNE 15 TYPE TPV2-1 can be fitted in any orientation with the mixed water outlet

pointing upwards, downwards, horizontally or at any angle between these planes.


19 |Revision 1.0

1.8 Connect the hot water supply to the port on the valve with the RED dot, and the cold water

supply to the port with the blue dot.

2. FLUSHING OF PIPEWORK TO THE WATER SUPPLY

(Water Fittings Regulations 1999, schedule 2 G13.1)

The most common cause for complaint regarding the performance of any newly installed Thermostatic

Mixing Valve is traced to dirt or debris in the TMV or check valves.

Before a HORNE 15 TYPE TPV2-1 is commissioned, the hot and cold water pipework should be

thoroughly flushed using the FLUSHING KIT shown in the diagram below. The FLUSHING KIT

comprises a screwed adaptor to fit the strainer body and a plastic pipe to enable water to be flushed

to drain. Only one or two kits are required on each site. The kit must be ordered separately.

DO NOT FLUSH THE PIPEWORK BY REMOVING THE STRAINER BASKETS AND OPENING THE

TAPS.

DO NOT OPEN the hot water tap before flushing the hot and cold water pipework.

The flushing procedure is as follows:

2.01During this procedure, keep the hot and cold water taps closed.

2.02 Close the hot and cold water ISOLATING VALVES.

2.03 Unscrew the END CAP (11) and remove the STRAINER BASKET (10) from the strainer at the

hot inlet.

2.04 Screw the FLUSHING KIT into the STRAINER BODY (9).

2.05 Place the outlet of the flushing pipe where it can drain freely. If draining into a wash basin or

bath, make sure that the drain plug is NOT in place and that water passing through the flushing

pipe is free to drain.

2.06 Open the hot water ISOLATING VALVE and allow any air in the pipework to escape until water

begins to flow to drain. Allow water to flow to drain until it is perfectly clean and free from any dirt

or debris.

2.07 Close hot water ISOLATING VALVE.


20 |Revision 1.0

2.08 Remove the Flushing Kit and replace the strainer basket and end cap.

2.09 Repeat 2.03 to 2.08 at the cold water inlet with the cold water ISOLATING VALVE.

2.10 Re-open both ISOLATING VALVES.

The flushing procedure has now been completed.


21 |Revision 1.0

3. COMMISSIONING A NEW HORNE 15 TYPE TPV2-1

3.1 Open the hot water tap and allow water to run through the HORNE 15 TYPE TPV2-1.

3.2 Check that hot and cold water supplies stabilise at or near to their designed temperatures and pressures.

3.3 Measure the temperature at the hot water tap. This is the temperature of the mixed water. Set the Mixed Water Temperature as in the table below:

Application Mixed Water

Temp.

Notes

For washbasins, washing under

running water is assumed.

A TMV with multiple designations

should be reset on site to suit the

appropriate designation.

Shower 41C

Washbasin 41C

3.4 If necessary, make minor adjustments to the temperature setting as described in Section 4 below.

3.5 CARRY OUT A COLD WATER ISOLATION TEST AS DESCRIBED BELOW.

3.5.1 Close the cold water isolating valve and simultaneously measure the mixed water temperature. The flow of mixed water should immediately stop and then a drip or trickle may be seen. The temperature of any water coming from the tap should not be more than 2°C above the mixed water set temperature measured in 3.3 above.

3.5.2 If the HORNE 15 TYPE TPV2-1 performs satisfactorily, close the hot water tap and open the cold water isolating valve.

3.5.3 If the water coming from the tap is at a temperature of more than 2°C above the mixed water temperature setting, then the HORNE 15 TYPE TPV2-1 is not cutting off the hot water supply properly. The most likely cause for this to happen is dirt inside the TMV. It should be dismantled and thoroughly cleaned and the pipework flushed again. See 6.3.1 to 6.3.9.

3.6 The HORNE 15 TYPE TPV2-1 is supplied with a WRAS approved DN15 integral single check valve located in each of the swivel inlet assemblies. To ensure that the check valves are working properly, proceed as follows.

3.6.1 Start with both hot and cold taps closed and both hot and cold isolating valves open.

3.6.2 Close the cold supply isolating valve.

3.6.3 Remove the strainer cap (11) at the cold inlet to the HORNE 15 TYPE TPV2-1. After some initial draining of water, there should be no flow whatever. This indicates that the check valve at the cold inlet is giving a tight shut off.

3.6.4 Replace the strainer cap (11) at the cold inlet and open the cold supply isolating valve.

3.6.5 Close the hot supply isolating valve.

3.6.6 Remove the strainer cap (11) at the hot inlet. After initial draining of water, there should be no flow of water whatever. This indicates that the check valve at the hot inlet is giving a tight shut off.

3.6.7 Replace strainer cap (11).

3.7 The HORNE 15 TYPE TPV2-1 has now been commissioned.

4. TEMPERATURE ADJUSTMENT


22 |Revision 1.0

The HORNE 15 TYPE TPV2-1 is set at the factory to control the mixed water temperature at approximately 41°C, but this MUST be verified on site.

The range of thermostatic temperature control is 35 - 46°C. Set the temperature according to the Table in 3.3 above.

To alter the temperature setting, carry out the following procedure:

4.1 Check that hot and cold water supplies are at or near to their designed temperature and pressure.

4.2 Remove the SECURITY SCREW (1) and lift off the THERMOSTATIC KNOB CAP (2). The temperature adjustment is made using a small flat bladed screwdriver on a small adjusting screw through the hole in the THERMOSTATIC KNOB LOCK NUT (3).

4.3 Open the mixed water outlet and allow water to flow until the mixed water temperature has

stabilised. Make sure that the dead leg from the HWS to the HORNE 15 TYPE TPV2-1 and

from the HORNE 15 TYPE TPV2-1 to the outlet has fully cleared.

4.4 Using a small flat bladed screwdriver, locate the ADJUSTMENT SCREW and turn the

ADJUSTING SCREW clockwise to reduce the mixed water temperature, or anti-clockwise to

increase it. Adjustments of not more than half a turn at a time should be made. The

temperature at the outlet should be measured and allowed to stabilise before any further

adjustments are made.

4.5 After making an adjustment, close the hot water supply isolating valve for ten seconds then

re-open it and measure the mixed water temperature again. If a further adjustment is

required, repeat the procedure.

5. IN-SERVICE TESTING

5.1 The purpose of In-Service Testing is to regularly monitor and record the performance of the

TMV. Periodic testing should be carried out to check if any deterioration has occurred in the

performance of the HORNE 15 TYPE TPV2-1. The results of these tests, and the equipment

used, should be recorded on the Commissioning, Maintenance and In-Service Testing Sheet

at the back of these instructions. Note that instrumentation to the same specification should

be used each time when measurements are taken to ensure consistency of results. Record all

the information requested on the In-Service Testing sheet at the back of these instructions.

Photocopy blank pages.

5.2 A COLD WATER ISOLATION TEST should be carried out as described in 3.5 above. If the

water coming from the tap is at a temperature of more than 2K above the mixed water

temperature setting then the HORNE 15 TYPE TPV2-1 is in need of maintenance.

NOTE: A Thermostatic Mixing Valve in need of maintenance can be undetectable in normal

use and may only become apparent when a disruption occurs in the hot or cold water supply

pressures or temperatures.

5.3 The frequency of in-service testing depends upon the condition of the water passing through

the TMV. In-service testing must be carried out more frequently in hard water areas than in

soft water areas. As a general guide, in-service testing should be carried out at intervals

somewhere between 6 months and 12 months. In-service testing should be carried out at

least every 12 months and, where the water is hard, the interval may be less than 6 months.

Experience of local conditions and the in-service testing record will dictate the frequency of in-

service testing. In the absence of practical experience of this, a first check 6 – 8 weeks after

commissioning should be performed. If no problems are detected (and mixed water temp is

within 1C of the commissioning temp) then checking again 12 – 15 weeks after

commissioning will help to build up a history. The results should be recorded on the attached


23 |Revision 1.0

sheet. Any requirement to reset the mixed water temperature should be noted. If no such

adjustments are required, then the next in-service tests can be scheduled for 24 – 28 weeks

after commissioning. If small adjustments (1 to 2 K) are required then check the strainers for

cleanliness, make sure the isolating valves are fully open and verify the check valves are

operating correctly (see Maintenance Section). The next in-service test should be conducted

18 - 21 weeks after commissioning. If larger adjustments are required (>2K), then service

work is required and the in-service tests should be repeated 18 – 21 weeks after

commissioning. Note that the pressure and temperatures of the supplies must be identical to

those during commissioning for the in-service tests to be meaningful.

6. MAINTENANCE

Maintenance of all Thermostatic Mixing Valves is essential to ensure that the valves continue

to operate to specification after installation, and continue to offer scald protection. Record all

maintenance carried out on the attached Commissioning & Maintenance Record sheet at the

back of these instructions.

The frequency of maintenance depends upon the condition of the water passing through the

TMV. The remarks in 5.3 regarding in-service testing apply equally to maintenance.

All 'O' Ring Seals should be replaced at least every three years.

The Thermostat Element (12) should be replaced at least every six years.

All other parts should be replaced only if physical damage has occurred.

MAINTENANCE PROCEDURES

6.1 Close hot and cold water inlet isolating valves and open the outlet to allow pipework to drain.

6.2 CLEANING STRAINERS - Unscrew STRAINER CAPS (11) and withdraw STRAINER BASKETS (10). Clean the baskets and de-scale them, if necessary.

6.3 THERMOSTATIC MIXING VALVE MECHANISM

Minor maintenance carried out with the HORNE 15 in situ.

6.3.1 Unscrew VALVE COVER (7). Remove THERMOSTAT ELEMENT (12), SLIDE VALVE ASSEMBLY (19), RETURN SPRING (15) AND BAFFLE TUBE (13).

6.3.2 The SLIDE VALVE ASSEMBLY (19) is a precision part and must be handled with care.

6.3.3 Make sure that the TEMP ADJ PISTON (shown on drawing) is free to move up and down under finger pressure. Turn the adjustment mechanism clockwise to force the piston down, then wind the adjusting mechanism fully back out (anti-clockwise) and push the piston back upwards (movement approx 4mm).

6.3.4 The SLIDE VALVE SEAL (16) can be removed by piercing the rubber with a sharp pointed probe. Take care not to bruise or scratch the edges of the groove.

6.3.5 If the SLIDE VALVE SEAL (16) has been removed, then it MUST be replaced with a new one. NEVER re-use an 'O' Ring.

6.3.6 Thoroughly clean all components.

6.3.7 Flush out the valve body by replacing the VALVE COVER (7) without the other internals and opening the isolating valves and allowing water at full bore to pass through the body to the outlet.


24 |Revision 1.0

6.3.8 If dirt is seen during flushing then carry out the FLUSHING PROCEDURE detailed in Section 2.

6.3.9 Re-assemble the HORNE 15 TYPE TPV2-1. (See 6.5)

6.4 Major Maintenance. For this, remove the HORNE 15 TYPE TPV2-1 from the pipework.

6.4.1 Unscrew the pipe coupling nits and the outlet pipe connection..

6.4.2 Lift the valve out of the pipework.

6.4.3 DO NOT grip the valve body in a vice. This could distort the body and jam the internal parts.

6.4.4 Remove the valve cover and internal parts as referred to in 6.3.1 to 6.3.4 above.

6.4.5 If the valve body requires de-scaling, remove all O-Ring seals and use a proprietary fluid for this purpose. Do not put the THERMOSTAT ELEMENT (8) or the BAFFLE TUBE (11) in de-scaling fluid. Do NOT put the VALVE COVER(7) in descaling fluid. If it needs descaled it MUST be disassembled first to remove the seal on the Temp Adj Piston.

6.4.6 Inspect the condition of the "HOT VALVE FACE" and "COLD VALVE FACE". If the valve faces show signs of deterioration, they can be resurfaced as follows.

6.4.7 Using a mandrel (Tool No. 5395), lap the hot valve face using a water soluble scouring paste. Use 800 Grade wet abrasive paper on a flat surface to lap the "COLD VALVE FACE" (the underside of the cover).

6.4.8 Reassemble the HORNE 15 TYPE TPV2-1.

6.5 RE-ASSEMBLY

6.5.1 When fitting new O-Rings, it is advisable to smear them sparingly with a WRAS listed silicone grease to ease assembly.

6.5.2 Insert the components into the HORNE 15 TYPE TPV2-1 in the order shown on Drawing 11324.

NOTE: The flanged end of the BAFFLE TUBE (13) must be inserted first into the valve body.

6.5.4 When the internal components have been located loosely in the valve body, place the VALVE COVER (7) over the THERMOSTAT ELEMENT (12) then push gently and turn until the thread on the VALVE COVER (7) engages with the VALVE BODY (8). The internal components are self-aligning.

6.6 CHECK VALVES

Check valves are located within the STRAINER BODIES (9). They are not removable. They

are designed for a long, maintenance free life.

7. FLOW REGULATOR

7.1 To avoid any unnecessary wastage of hot water, the optional flow regulator supplied with the

HORNE 15 TYPE TPV2-1 can be fitted at the mixed water outlet.

7.2 The flow regulator is designed to pass a flow of 8 l/min of mixed water irrespective of the hot

and cold supply pressures.

7.3 The flow regulator fits between the outlet pipe and the compression fitting.


25 |Revision 1.0


26 |Revision 1.0

Fault Finding Table.

SYMPTOM POSSIBLE CAUSE ACTION REFER TO

SECTION

Mixed water temperature

too high

Temperature setting too high.

Temperature has been set when the hot water

temperature is too low

Re-adjust temperature setting 4

Hot water has migrated into cold water supply Inspect Check Valve at cold inlet If the

check valve leaks replace the strainer

body and check valve sub-assembly

3.6.1 to 3.6.7

See

Drg.11324

Thermostat Element has failed. This can be

checked by carrying out a hot or cold water

failure test.

Replace element (12) 6

Mixed water temperature

too low

Temperature Setting too low Re-adjust temperature setting 4

Hot water supply temperature has fallen Check hot water supply system 3.2

Cold water has migrated into hot supply Inspect Check Valve at hot inlet If the

check valve leaks replace the strainer

body and check valve sub- assembly.

3.6.1 to 3.6.7

See Drg

11324

Cold valve face requires cleaning Remove valve Cover (7) and service valve

face

6.4.7

Mixed water flow rate too

low.

Partly blocked strainers Clean strainers 6.2

Unusually high pressure drop in supply pipework Check all valves are full open. Check

Pressurisation unit Check mains supply

Extra Demand added to system Check pipe sizing

Mixed water temp does not

respond to adjusting screw

Slide-Valve (19) is seized Valve requires de-scaling 6.4.5

Hot and cold inlets reversed Remove HORNE 15 TYPE TPV2-1 from

pipes and reverse connections. Connect

inlet with red dot to hot pipe

Mixed water temp changes

and is not steady

Slide-Valve (19) is seized Valve requires De-Scaling 6.4.5

Thermostat element (12) has failed (This can be

checked by carrying out a hot or cold water

failure test)

Replace element (12) 6

Water at outlet runs full hot

or full cold

Hot and cold inlets are reversed Reverse connections. The Hot inlet is

marked with a Red dot, and the Cold inlet

is marked with a Blue dot

Valve continues to pass

cold water when hot supply

is isolated

Cold valve face requires cleaning Remove valve cover (7) and service cold

valve face

6.4.7

Fouling at hot valve seat Clean hot valve face 6.4.7

Valve continues to pass hot

water when cold supply is

isolated

Slide-Valve seal is damaged Replace Slide-Valve Seal (16) 6.3.4 & 6.3.5

Element has failed Replace Element (12) 6

COMMISSIONING, MAINTENANCE & IN-SERVICE TESTING RECORD

Establishment:

Type of Valve: HORNE 15 TYPE TPV2-1 Date Installed: Installed by:

Location of Valve:

Commissioning Details Note: Fill in ALL information during commissioning.

Hot Water Supply : HW Temp C HW Pressure Bar Temp: Instrumentation: Pressure: Cold Water Supply: CW Temp C CW Pressure Bar

Mixed Temp at max draw-off: Mixed Temp: C Flowrate at max draw-off: l/min

Mixed Temp at low draw-off: Mixed Temp: C Flowrate at low draw-off: l/min

Instrumentation Used: Temp: Press: Flow:

Cold Water Isolation Test Max Mixed Water Temp during CW Isolation test: C Mixed Water Temp on restoration of CW Supply: C

Note: MWT should return within 2 degrees of set temp, and be no greater than 43C after this test.

Comments:

In-Service Testing Record

Date:

Hot Water Supply : HW Temp C HW Pressure Bar Instrumentation: Temp:

Used:

Pressure: Cold Water Supply: CW Temp C CW Pressure Bar




Cold Water Isolation Test Max Mixed Water Temp during CW Isolation test: C Mixed Water Temp on restoration of CW Supply: C

Note: MWT should return within 2 degrees of set temp, and be no greater than temp shown below* for this test.

Comments:

Recommended Date of Next In-Service Test:

*Max stabilised Mixed Water Temperatures: Bath (44C fill) = 46C, Bath (46C fill) = 48C, Washbasin = 43C, Shower = 43C

IN-SERVICE TESTING RECORD

(Note: Photocopy this page)

In-Service Testing Record Establishment: Location of Valve: Date: Type of Valve : HORNE 15 TYPE TPV2-1





Cold Water Isolation Test Max Mixed Water Temp during CW Isolation test: C Mixed Water Temp on restoration of CW Supply: C Note: MWT should return within 2 degrees of set temp, and be no greater than 43C after this test.

Comments:


In-Service Testing Record Establishment: Location of Valve: Date: Type of Valve : HORNE 15 TYPE TPV2-1





Cold Water Isolation Test Max Mixed Water Temp during CW Isolation test: C Mixed Water Temp on restoration of CW Supply: C Note: MWT should return within 2 degrees of set temp, and be no greater than 43C after this test.

Comments:


product manual smva09 adjustable shower valve - … · interconnecting and sealing pipe ends ......

Documents