Inta Mio MM40014CP User manual

Mio
Concealed Shower Mixing Valve
MM40014CP
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.
Intatec Ltd
Airfield Industrial Estate
Hixon
Staffordshire
ST18 0PF
Tel: [phone]
Fax: [phone]
email: [email protected]
web: www.intatec.co.uk
© Intatec Ltd 2017

© Intatec Ltd 2017 1
Products
Mio and Mio DELUXE thermostatic concealed single outlet shower valves are available with
options detailed.
Mio Product Range
Mio Thermostatic Concealed Shower single outlet. MM40010CP
Mio Rinse Station with hose and hand set MM70001CP
Mio Flexible Slide Rail Kit with wall outlet and handset MM70002CP
Mio Overhead Arm and Soaker MM70003CP
Mio Ceiling Arm and Soaker MM70004CP
Mio Thermostatic Concealed Shower with rinse station and handset MIO10
Mio Thermostatic Concealed Shower with flexible slide rail kit,
5 function handset and wall elbow MIO11
Mio Thermostatic Concealed Shower with overhead arm and soaker MIO12
Mio Thermostatic Concealed Shower with ceiling arm and soaker MIO13
Mio
DEL XE Product Range
Mio
DELUXE Rinse Station with smooth hose and push button hand set MM70005CP
Mio
DELUXE Flexible Slide Rail Kit with wall outlet and push
button handset MM70006CP
Mio
DELUXE Overhead Arm and Large Stainless Steel Soaker MM70007CP
Mio
DELUXE Ceiling Arm and Large Stainless Steel Soaker MM70008CP
Mio Thermostatic Concealed Shower with rinse station and
push button handset MIOD10
Mio Thermostatic Concealed Shower with flexible slide rail kit,
push button handset and wall elbow MIOD11
Mio Thermostatic Concealed Shower with overhead arm and
large stainless steel soaker MIOD12
Mio Thermostatic Concealed Shower with ceiling arm and
large stainless steel soaker MIOD13

© Intatec Ltd 2017 2
Introduction
This installation guide has been produced for the Mio thermostatic concealed shower.
These instructions cover the installation, operation and maintenance. Please read the enclosed
instructions before commencing the installation of this product, please note;
We recommend that the installation of any Inta product is carried out
by an approved installer.
The installation must be carried out strictly in accordance with the Water Supply (Water Fitting)
Regulations 1999 and any local authority regulations.
If in doubt we recommend that you contact WRAS - Water Regulations Advisory Scheme on
Tel: [phone], your local water authority - details available on the WRAS website or
the Chartered Institute of Plumbing and Heating Engineers on Tel: [phone].
All products MUST be re-commissioned to suit site conditions to ensure optimum performance
levels of the product are obtained
Safety
This thermostatic shower must be installed and commissioned correctly to ensure that water is
supplied at a safe temperature to suit the users.
The shower is pre-set using ideal conditions to 38°C at the stop with a manual push button
override to 46°C (can be re-set to suit site conditions or user preference – see calibration
page 13).
The maximum mixed temperature takes account of the allowable tolerances inherent in
thermostatic shower mixers and temperature losses.
It is not a safe bathing temperature for adults or children.
The British Burns Association recommends 37 to 37.5˚C as a comfortable bathing
temperature for children. In premises covered by the Care Standard Act 2000, the maximum
mixed water outlet temperature is 43˚C.
Technical Data
This Inta Mio thermostatic shower valve is suitable for installations on all types of plumbing
systems, including gravity supplies, fully pumped, modulating combination boiler, unvented
water heater and unbalanced supplies i.e. Cold Mains & Tank Fed Hot. They are not suitable
for non-modulating combination boilers.
Max Inlet Pressure (Static) 10 bar Max Inlet Temperature 85˚C
Max Inlet Pressure (Dynamic) 5 bar Pre Set Factory Temp Setting 38˚C
Min Operating Pressure (Dynamic) 0.2 bar Temperature Stability ±2˚C
Max Unbalanced Pressure Ratio 5:1 Min Temp Differential to
Inlet Connections (Body only) G½ ensure fail-safe between hot
Outlet Connection Top G½ and cold supplies 10˚C

© Intatec Ltd 2017 3
Components - Shower Valve
1
2
3
4
6
5
Item Qty Component
1 1 Valve body and flow controller body
2 1 Flow controller
3 1 Thermostatic cartridge
4 1 Cap and check valve
5 1 Straight male x compression adaptor
6 2 Angled male x compression adaptor

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Components - Concealing Plate and Control Knobs
7
8
9
10
11
12
13
14
15
17
18
25
16
Item Qty Component
7 1 Concealing plate gasket
8 1 Concealing plate
9 2 Sealing ring retainer
10 1 Temperature control concealing sleeve
11 2 Sealing ring
12 1 Temperature stop ring
13 2 Drive bush
14 2 Retaining screw
15 1 Temperature control knob
16 1 Flow control concealing sleeve
17 1 Flow control stop ring
18 1 Flow control knob
25 1 Outlet elbow - only supplied with MM40014CP

© Intatec Ltd 2017 5
Components - Plaster Guard and Insulation
19
20
21
22
23
24
Item Qty Component
19 1 Preformed body insulation shell
20 2 Extension piece
21 1 Thermostatic cartridge cover
22 1 Flow controller cover
23 1 Plaster guard
24 3 Retaining screw

© Intatec Ltd 2017 6
Check Content
Before commencing remove all components from packaging and check each component with
the contents list.
Ensure all parts are present, before discarding any packaging. If any parts are missing, do not
attempt to install your Inta shower valve until the missing parts have been obtained.
nvented Mains Pressure System
The drawing shows a typical installation of a shower mixing valve in conjunction with an
unvented hot water system. This type of installation must be carried out in accordance with Part
G of the Building Regulations.
Whilst pressures are theoretically equal (balanced) most unvented hot systems have a pressure
reducing valve on the incoming cold water prior to the hot water storage vessel. This means
that the hot and cold pressures can be significantly different.
Most unvented systems use an inlet manifold located directly after the pressure reducing valve.
It is recommended that the cold supply be taken from one of the outlets of the manifold directly
to the shower as an independent supply.
For systems without a manifold unit after
the pressure reducing valve and where
the cold water supply pressure is
significantly higher than the hot supply
we recommend that a separate
pressure reducing valve is fitted to the
cold supply, as close as possible to the
shower valve and with no draw off
points between it and the shower valve.
Flow regulators are required for
installations where a PRV is not fitted to
ensure simultaneous demand is
accounted for.
PRV
Manifold
Cold Supply
direct from Mains
PRV if
manifold
not used

© Intatec Ltd 2017 7
Pumped Systems
Pumped systems use a booster pump to increase the pressure of the gravity fed water supplies.
These booster pumps are used where the head of water is insufficient to provide a satisfactory
shower or where a high performance shower is
required.
Please ensure that the performance of the pump
is matched to suit the shower.
Follow the instructions for gravity fed installations
taking into account the installation requirements
of the pump.
Ensure that the hot and cold water storage
capacity is sufficient to supply the shower and
any other draw off points that may be used
simultaneously.
Most pumps require a minimum head of water
to allow the flow switches to operate
automatically. Where this is not available a
ne ative head kit may be required to operate
the pump.
Please consult the pump manufacturer’s
installation requirements
Modulating Combi Boiler / Instantaneous Gas Water Heater
The drawing shows a typical installation of a shower valve in conjunction with a combination
boiler.
Combi boilers will produce a constant flow of water
at a temperature within its operating range. However
we recommend that the system should supply hot water
in excess of 60˚C.
The hot water flow rates are dependant upon the
type of boiler / heater used and the temperature rise
required to heat the cold water to the required
temperature.
The cold water flow rates may be much greater as
they are generally unrestricted from the mains cold
water supply. To ensure relatively balanced flow
rates, we recommend that a pressure reducing valve
or 6 l/min flow regulator is fitted in the cold water
supply pipe.
Cold Supply
direct from Mains
Pumps

© Intatec Ltd 2017 8
Dimensions
Gravity System
The drawing shows a typical installation of a shower valve on a gravity supplied system.
Please note the minimum head pressure required to ensure correct operation of the valve. In
accordance with good plumbing practice, we recommend that a totally independent hot and
cold water supply be taken to the valve.
The cold water supply must be connected
directly to the water cistern. The hot water
supply should be connected to the hot water
cylinder via an Essex flange or Sussex flange or
to the vent or a draw off pipe as close as
possible to the top of the cylinder.
For equal tank fed pressures there is no need to
fit the flow regulators. This installation is the
recommended minimum for gravity supplies.
For systems with less than 2 metre head
pressure, we recommend that a suitable booster
pump is fitted to increase the supply pressure.
Cold Mains & Gravity Hot Supplies
If the cold supply to the shower is direct from the
cold water mains and the hot water supply is
gravity fed from the cold water cistern via the
hot water cistern you MUST fit a pressure
reducing valve or a 6 l/min flow regulator.
62-72
125
25
G
Ø7
Ø209
G
160
3
Option shown
for mains
pressure cold
& low pressure
hot water
Min. 2m head

© Intatec Ltd 2017 9
Site Preparation
It is important to plan the installation thoroughly to suit site conditions before
commencing.
• Before commencing the installation ensure site conditions are suitable.
• The shower mixing valve is designed for concealed pipework, whether in a solid or studded
wall.
• Site conditions will determine how the shower valve, outlet elbow and if required the over
head soaker (shower head) will be installed.
• The thickness of wall tiles, plaster or plaster board should all be considered when positioning
the shower valve and routing the hot and cold supply pipes.
• The shower valve must protrude sufficiently from the finished tiled surface to allow the
concealing plate and control knobs to be fitted.
• Ensure the shower valve will be vertical when installed.
• The supply pipes can come from below, above, the side or through the wall.
• The shower valve must be installed securely into the wall. If not embedded into the wall with
plaster the shower valve must be fixed secure to the studding using screws in the 2
mounting holes.
• The whole system should be thoroughly flushed, prior to the connection of the hot and cold
water supplies to the shower valve, to remove any debris that may be in the supply
pipework.
• Ensure there are no joint leaks before finishing the wall.
• Isolation valves must be fitted in an accessible position to both the hot and cold supplies
should the valve need to be isolated in the future for servicing.
Installation - Shower Valve
Before installing the shower valve, fit the three threaded by compression fittings (5 & 6) to the
two inlet connections and the outlet connection, ensuring water tight joints. Also connect the
supply and outlet pipes.
The valve and pipes can be used as a template to mark their position onto the wall.

© Intatec Ltd 2017 10
Solid wall
• Create a large enough cavity for the shower valve and chase the wall for the two supply
pipes and a route from the outlet of the shower valve to the outlet elbow and overhead
shower.
• If the shower valve is to be fitted in an
outside wall or where there is a
greater risk of freezing the preformed
insulation (17) should be used, which
will require a deeper cavity.
• If the preformed insulation is not used,
fix the shower valve into the cavity
using the 2 fixing holes ensuring the
valve is vertically in line.
• Ensure the thermostatic cartridge and
flow control valve protrude sufficiently
from the finished wall surface to allow
the concealing plate and control knobs
to be fitted, see dimension drawing.
Cavity wall
• The shower valve must be fixed securely to the structural members of the stud wall and/or an
additional member may need to be included where the shower valve will be located.
• If there is access from the adjacent room into the cavity, the surface of the shower room wall
can be finished with most of the tiling completed.
• Fix the shower valve to the structural member using 2 screws of sufficient length and tighten
to hold secure.
• Ensure the thermostatic cartridge and
flow control valve protrude sufficiently
from the finished wall surface to allow
the concealing plate and control knobs
to be fitted, see dimension drawing for
protrusion distance.
• Additional holes need to be made for the
outlet elbow and soaker arm. The tiling
around these holes needs to be
completed to allow the these components
to be fitted.
Fixing hole
Insulation
Fixing hole

© Intatec Ltd 2017 11
Plaster guard
• Check all joints for leakage before embedding into the wall or concealing the valve.
• Screw the extension pieces (20) into the two threaded holes.
• Place the thermostatic cartridge extension (21) over the flow cartridge spindle.
• Place the flow control cover (22) over the flow control valve and secure with the retaining
screw (24).
• Fit the plaster guard (23) over the valve and secure with two retaining screws (24).
• For a solid wall embed the pipes and shower valve with plaster.
• Finally finish the wall with plaster and plaster up to and around the plaster guard.
• When the plaster is dry remove the plaster guard or if a tiled wall leave in position and tile
around the guard.
• Finally remove the retaining screws, plaster guard and extension pieces.
20 21
22
23
24

© Intatec Ltd 2013 12
Fitting the Concealing Plate
• If there is access from the adjacent room into the cavity, the surface of the shower room wall
can be finished with most of the tiling completed.
• Connect the copper supply pipework ensuring a water tight joint.
• Insert the assembly through the wall, secure the pipework and connect to the shower valve.
• Once the wall elbow or soaker has been connected turn on the water supplies and test all
joints for leakage before finishing the wall. Any leaking joints must be rectified before
proceeding further.
• Finish tiling the wall around the shower valve.
• Fit the gasket into the concealing plate with a bead of mastic.
• Place the concealing plate and gasket, with a bead of mastic on the back of both, over the
control valves and press firmly to the wall.
• Fit the temperature stop ring, the gear drive and push on the temperature control knobs.
• Finally finish the wall on the adjacent room side.
• See installation details for the various outlet and shower combinations.
Valve fixed securely
using 2 screws to
structural member of stud wall
Compression
Fittings
Outlet pipe to
wall elbow and
overhead soaker
Typical arrangement
for a studded wall

© Intatec Ltd 2017 13
Calibration
The Mio shower valve has a factory set outlet temperature of 38˚C via the security setting.
This is based on a balanced supply pressure and a stable hot water inlet temperature of 65˚C.
However, the calibration point MUST be checked and re-set as necessary to suit site conditions.
Care must be taken when re-calibrating the valve as INCORRECT CALIBRATION CAN CAUSE
INJURY.
• Remove the temperature control knob (15) by pulling away from the shower valve and the
temperature stop ring (12).
• Fully open the flow control and allow the outlet temperature to stabilise.
• Temporarily refit the control knob (15) and using a digital thermometer it is possible to increase
or reduce the mixed water outlet temperature until 38˚C is re-established, by slowly rotating
the control knob.
• Remove the control knob (15) and refit the temperature stop ring (12) onto the splined section
of the cartridge. The red dot on the temperature stop ring must align with the temperature
position symbol on the temperature control concealing sleeve (10).
• Refit the temperature control knob in the reverse order ensuring that 38˚C on the control knob
is in line with the temperature position symbol (10).
PLEASE NOTE THAT ONCE CALIBRATED, THE SECURITY SETTING WILL ONLY BE 38˚C
UNDER THE SUPPLY CONDITIONS USED FOR CALIBRATION.
Cartridge Replacement
• Isolate both the hot and cold water supplies
• Remove the temperature control knob (15) by pulling away from the shower valve, the gear
drive (13) and the temperature stop ring (12).
• Using a suitable spanner unscrew the cartridge (3).
• Replace with a new cartridge.
• The shower valve must be re-calibrated after fitting the new cartridge following the procedure
above.
• Refit the temperature stop ring (12) onto the splined section of the cartridge. The red dot on the
temperature stop ring must align with the temperature position symbol on the temperature
control concealing sleeve (10).
• Refit the gear drive (13).
• Refit the temperature control knob in the reverse order ensuring that 38˚C on the control knob
is in line with the temperature position symbol (10).

© Intatec Ltd 2017 14
Cartridge Replacement
Aftercare
Inta shower mixing valves have a high quality finish and should be treated with care.
An occasional wipe with a mild washing-up liquid on a soft damp cloth followed by a
thorough rinsing is all that is required.
The nozzles in the hand set should be cleaned periodically to remove any build up of debris or
deposits which may affect the performance of the shower.
Do not use an abrasive or chemical household cleaner as this may cause damage.
Spares
A full range of spares are available for this product.
PLEASE NOTE: Only genuine spares should be used.
3
15
12
10
14
13

© Intatec Ltd 2013 15
Problem Solving
The following details are supplied for on site queries, should you require any further assistance
our Technical Department can be contacted directly on 01889 272199.
Fault Solution
Showering temperature is not hot enough. Ensure the hot water supply is at a constant
temperature above 60˚C.
Check for air locks in the pipework.
Thermostatic cartridge movement limited
due to lime scale build up
The water goes cold during showering. Insufficient stored hot water.
When used with a combi boiler confirm
that the boiler is still firing.
Adjust the boiler to a minimum setting of
65˚C which may not necessarily be the
best flow rate.
When the water is set at cold, the
showering temperature is too hot.
The hot and cold supply connections have
been made in reverse.
Thermostatic cartridge movement limited
due to lime scale build up
The maximum showering temperature is
too hot or when set to hot water runs to
cold.
Check the commissioned maximum
temperature of the shower valve.
Check the connections to the valve have
not been made in reverse.
Thermostatic cartridge movement limited
due to lime scale build up
The flow of water from the shower valve is
low.
Check the filters are clean and the supply
pressure is above 0.2 bar.
o flow of water Ensure the valve has not fail-safed and
check that there is hot and cold water flow
to the valve.
Ensure the check valves are not closed.
Shower is stiff to operate Build-up of limescale on flow control
cartridge - service and de-scale
Passing/dripping from outlet Service flow control cartridge.

© Intatec Ltd 2017 16
Water Outlets - Installation
• The pipework for the water outlets must be fixed securely to a structural members of the stud
wall and/or an additional member may need to be included.
• If there is access from the adjacent room into the wall cavity or from the room above or roof
space into the ceiling space, the surface of the shower room wall can be finished with most
of the tiling completed or the ceiling finished.
• Drill a hole in the required location for the wall elbow, overhead or ceiling soaker.
• A flanged elbow with a compression and female threaded connection may be used to
provide a secure connection for the outlets. Other types of fittings can be used which fit to a
structural member and provide the required connections.
• For the ceiling arm the fitting used should not protrude beyond the surface of the ceiling.
• Other fittings may be required to make the connection between the fitting fixed to the
structural member and the water outlet.
• Apply mastic to the inner edge of the wall elbow before fitting.
• Push the concealing plate of the overhead arm or ceiling arm to the wall or ceiling.
• Connect the water outlet to the mixed water supply from the shower valve.
• Turn on the water supplies and test all joints for leakage before finishing the wall. Any
leaking joints must be rectified before proceeding further.
Rinse Station
• Connect the handset to the hose using the sealing washer provided.
• Connect the hose to the outlet elbow using the sealing washer provided.
• Turn on the shower and check joints for leakage.
Slide Rail Kit
• Install the slide rail kit following the instructions given on page 20.
• Connect the hose to the outlet elbow using the sealing washer provided.
• Turn on the shower and check joints for leakage.

© Intatec Ltd 2013 17
MM70002CP Flexible Riser Rail - Dimensions
654
30 15
120
25.5
67.5
19
1
2
4
6
3
5
9
Upper Bracket Details
Lower Bracket Details
7
8
630 max
Item Qty Component
1 1 Riser Rail
2 2 Wall Bracket Clip
3 2 Wall Bracket
4 4 Retaining Screw 45mm
5 2 Wall Bracket Screw
6 2 End Cap
7 1 Handset
8 1 Flexible Hose
9 1 Spacer

© Intatec Ltd 2017 18
MM70006CP Deluxe Flexible Riser Rail - Dimensions
654
30 15
120
25.5
67.5
19
7
8
630 max
Upper Bracket Details
1
2
4
6
3
5
9
Lower Bracket Details
Item Qty Component
1 1 Riser Rail
2 2 Wall Bracket Clip
3 2 Wall Bracket
4 4 Retaining Screw 45mm
5 2 Wall Bracket Screw
6 2 End Cap
7 1 Push Button Handset
8 1 Smooth Flexible Hose
9 1 Spacer

© Intatec Ltd 2013 19
Installing the Riser Rail
The screws and wall plugs supplied are only suitable for use in solid walls. If the wall is plaster
board or soft building block use special wall plugs obtainable from most DIY stores.
Ensure there are no supply pipes or cables where you intend to drill.
Where possible, drill holes between ceramic tiles (in the grout). If drilling into ceramic tiles use
a ceramic bit.
This product must always be used and fitted in such a way as not to cause water damage,
therefore should be located and directed towards a suitable bath or shower tray.
Take care to use power tools safely.
To avoid cracking ensure the wall plugs are pushed all the way behind the ceramic tiles.
Assemble the handset holder onto the riser rail as shown.
Drill the two 6mm diameter holes for the lower wall bracket clip (2).
Fix the lower wall bracket clip to the wall using the 45mm long screws provided.
Position the upper wall bracket clip onto the wall and mark the position for the 2 retaining
screws ensuring that it is vertically above the lower clip and the centre distance does not
exceed 630mm.
Wall Bracket - Components
Upper Bracket Components
Lower Bracket Components
23
45
9