Triton DART Eco User manual

Installers please note these InstructIons are to be left wIth the user
2180600F August 2009
DART Eco
concentric thermostatic mixer valve
Installation and
operating instructions
ECO STATEMENT
This product has been fitted
with a flow regulator to
deliver a maximum flow
rate of 9 litres per minute.

Concentric thermostatic mixer valve
CONTENTS Page
MAIN COMPONENTS - Both mixers .............................................................. 1
INTRODUCTION - Both mixers ...................................................................... 2
SITE REQUIREMENTS - Both mixers ................................................................ 2
SAFETY WARNINGS - Both mixers .................................................................. 2
PLUMBING REQUIREMENTS - Both mixers ..................................................... 3
WATER SYSTEM REQUIREMENTS - Both mixers .............................................. 3
TYPICAL DOMESTIC INSTALLATIONS -- Both mixers ...................................... 6
INSTALLATION - Exposed Fitting .................................................... 7 - 9
Preparing the mixer ...................................................................................... 7
Fitting the mixer...........................................................................................8
Flow regulation.......................................................................................... 8 - 9
INSTALLATION - Built-In Fitting.................................................... 10 - 15
Preparing the mixer ..................................................................................... 10
Built-In fitting .............................................................................................. 11
Installation in a solid wall ......................................................................... 11 - 12
Installation in a hollow wall.......................................................................... 12
Installation in a panel or cubicle................................................................... 12
FITTING THE MIXER..................................................................................... 13
FITTING THE BULKHEAD PIPEWORK or FIXED HEAD .................................... 14
LEAK TESTING - Both mixers ......................................................................... 14
MAKING GOOD - Both mixers ...................................................................... 14
BULKHEAD ASSEMBLY ................................................................................. 15
To fit a flow regulator .................................................................................. 15
ANTI-SCALD PROTECTION - Both mixers...................................................... 16
Fitting the coverplate................................................................................... 16
COMMISSIONING - Both mixers................................................................... 16
ADJUSTING THE MAXIMUM TEMPERATURE SETTING - Both mixers.............. 17
FITTING THE LEVERS - Both mixers................................................................ 18
OPERATING THE SHOWER - Both mixers....................................................... 19
APPROVALS - Both mixers ............................................................................. 20
FLOW CHART - Both mixers .......................................................................... 20
DIMENSIONS - Both mixers .......................................................................... 21
SPARE PARTS - Both mixers............................................................................ 22
MAINTENANCE - Both mixers....................................................................... 23
FAULT FINDING - Both mixers................................................................... 24 - 25
Guarantee, service policy, etc................................................................. rear cover
To check the product suitability for commercial and multiple installations, please contact Triton’s
specification advisory service before installation.
Telephone:
Facsimile:
E mail:
0844 980 0730
0844 980 0744
[email protected]

Concentric thermostatic mixer valve
1
Ref. Description
1. Mixer shower body
2. Blanking plug
3. Outlet adapter
4. Flow regulator
5. Inlet nut and Olive X2
Main components
MAIN COMPONENTS
6. Cover plate
7. Mounting plate
8. Outlet bulkhead
9. Nutted long thread connector
10. Wall trim X2
3
4
6
7
8
9
All dimensions listed in this fitting book regarding the product and installation are approximate.
*All kits are for illustration purposes only and are not supplied unless otherwise stated.
Fig.1
10
5
2
1

Concentric thermostatic mixer valve
2
INTRODUCTION
This book contains all the necessary fitting and
operating instructions for your Triton mixer
shower. Please read them carefully and read
through the whole of this book before beginning
your installation.
The shower installation must be carried out by
a suitably competent person and in sequence of
this instruction book.
Care taken during the installation will give a long
and trouble free life from your mixer shower.
SITE REQUIREMENTS
The installation must be in accordance with
water supply (water fittings) regulation 1999
and/or local Bylaws.
Water pressure requirements
Running water pressure:
Low presure - 0.1 bar min.
1.0 bar max.
High pressure - 0.5 bar min.
5.0 bar max.
Maximum static water pressure:
Low & High pressure - 10 bar
This mixer shower is designed for use with
traditional low pressure ‘gravity’ water systems,
using a cold water cistern and hot water cylinder as
well as for the higher pressure systems found in the
UK up to a maximum of 5 bar running pressure.
For effective operation of the internal seals, the
maximum static pressure must not be exceeded.
Pressure reducing valve
On sites where the running pressure is above 5
bar, the use of a suitably sized pressure reducing
valve fitted in the cold mains supply pipe work
can provide nominally equal pressures at the
mixer shower.
Water minimum flow rate
For best performance within the specified running
pressure range a minimum flow of 8 litres per
minute should be available to both inlets.
Water temperature requirements
Maximum hot water temperature: = 80°C
Recommended maximum: = 65°C
Minimum hot water temperature: = 55°C
Maximum cold water temperature: = 25°C
NOTE: Valves operating outside these conditions
cannot be guaranteed by the Scheme to operate
as Type 2 valves.
The mixer shower MUST NOT be subjected to
water temperatures above 80°C.
BS 6700 recommends that the temperature of
stored water should never exceed 65°C.
A stored water temperature of 60°C is
considered sufficient to meet all normal
requirements and will minimise the effects of
scale in hard water areas.
Water temperature adjustment and
thermal safety
The mixed water temperature can be adjusted
from cold through to a top limit which must
be preset during installation with full anti-scald
protection throughout the range (35°C to 40°C)
providing the hot water temperature at the inlet
remains 10°C above the outlet temperature.
Should there be a loss of flow to either incoming
supply then- water from the shower will stop or
be reduced until both supplies are restored.
SAFETY WARNINGS
a. DO NOT choose a position where the shower
could become frozen.
b. DO NOT connect this mixer shower to any
form of tap or fitting not recommended by
the manufacturer.
c. DO NOT allow the inlet pressure or flow
rates to operate outside the guidelines laid
out in ‘site requirements’.
d. DO NOT connect the mixer shower to a
gravity hot supply and a mains cold supply
(or vice versa).
ECO STATEMENT
This product has been fitted with a
flow regulator to deliver a maximum
flow rate of 9 litres per minute.

Concentric thermostatic mixer valve
3
Replacement parts can be ordered from Triton Customer
Service. See ‘spare parts’ for details and part numbers.
PLUMBING REQUIREMENTS
DO NOT use jointing compounds on any pipe
fittings for the installation,
DO NOT solder fittings near the mixer unit
as heat can transfer along the pipework and
damage the mixer valve.
IMPORTANT:
• The layout and sizing of pipework MUST
be such that nominally equal inlet supply
pressures are achieved and the effects of
other draw-offs are minimised.
• The pipe-work should be installed such
that other taps and appliances being
operated elsewhere on the premises do not
significantly affect the flow
• When connecting pipe-work avoid using
tight 90° elbows; swept or formed bends will
give the best performance.
• The hot water pipe entry must be made to
the left-hand side inlet, marked HOT, ‘H’ or
with a red/orange label.
• Suitable isolating valves (complying with
Water Regulations and Bylaws) must be fitted
on the hot and cold water supplies to the
shower as an independent means of isolating
the water supplies should maintenance or
servicing be necessary.
• It is preferable to flush the pipe-work to clear
the system of debris and check for leaks
before connecting to the mixer.
• The mixer inlets contain removable filters
that may become blocked if debris is not
flushed through before fitting.
(Commercial applications)
• Triton recommends for all commercial
applications that, easily accessible, in-line
filters are used to aid maintenance.
Hard water areas
a. If it is intended to operate the shower
in areas of hard water (above 200-ppm
temporary hardness), a scale inhibitor may
have to be fitted. For advice on the Triton
scale inhibitor, please contact Customer
Service.
b. For best performance the showerhead MUST be
regularly cleaned to remove scale and debris.
WATER SYSTEM REQUIREMENTS
This mixer shower is suitable for: -
• Gravity water systems
• Pumped gravity systems.
• Fully modulating type combination boilers
• Multi-point hot water heaters.
• Thermal storage,
• Unvented systems
When installing this mixer with a Combination or
multi-point boiler, it may be necessary to install
flow regulation.
Check that the appliance is capable of delivering
hot water at a minimum switch-on flow rate
of 3 litres per minute. At flow rates between 3
and 8 litres per minute, the appliance must be
capable of raising the water temperature to 52°C
(minimum).
Water temperature at the inlet of the mixer valve
must remain relatively constant when flow rate
adjustments are made (refer to the appliance-
operating manual to confirm compatibility with
this mixer shower).
Where thermal store systems and instantaneous
gas water heaters are used, if excessive draw-
off take place the appliance may not be able to
maintain an adequate output temperature. This
could result in the shower temperature becoming
noticeably cooler.
Flow regulators can be fitted with high-pressure
water systems to reduce flow rate and assist
economy.
The hot supply temperature MUST remain a
minimum of 10°C hotter than the required blend
temperature for optimum performance.

Concentric thermostatic mixer valve
4
Typical suitable installations
TYPICAL DOMESTIC INSTALLATIONS
Domestic gravity fed systems (fig.2)
The shower control MUST be fed from a cold
water cistern and hot water cylinder providing
nominally equal pressures. There must be a
minimum of one metre head of water. The
minimum head distance is measured from the
base of the cold water cistern to top of the
showerhead.
If valves are gravity fed then supply pressure
should be verified to ensure conditions of use
are appropriate for the valve.
Pumped gravity fed systems (fig.3)
The shower control MUST be fed from a cold
water cistern and hot water cylinder providing
nominally equal pressures.
The mixer unit may be used with a gravity fed
system with a pump to boost pressures as shown;
please refer to the pump installation guide to
establish the minimum head requirements for
automatic operation of the pump
*(kits are for illustration purposes only)
Hot water
cylinder
Cold supply
Hot supply
Alternative supply
(must be below
vent pipe tee)
Cold
water
mains
supply
Drain
valve
Gate
valve
Stop valve
Cold water
cistern
Minimum head
Other
draw-offs
Draw-off must point down
to avoid airlock issues
Service
valves
Mixer
Kit
Hot water
cylinder
Mixer
Cold supply
Hot
supply
Alternative supply
(must be below
vent pipe tee)
Cold
water
mains
supply
Drain
valve
Gate
valve
Stop valve
Cold water
cistern
Minimum head
Other
draw-offs
Draw-off must point
down to avoid airlock
issues
Ring main
Isolating switch or
pull cord switch
(both fused at 3A)
Service
valve
Service
valve
Pump
Mixer
Mixer
*Fig.3 *(diagrammatic view – not to scale)
*Fig.2 *(diagrammatic view – not to scale)

Concentric thermostatic mixer valve
5
Instantaneous gas-heated systems, e.g.
combination boilers (fig.4)
The shower control MUST be installed with a
multi-point gas water heater or combination
boiler of a fully modulating design (i.e.
to maintain relatively stable hot water
temperatures).
A drop tight pressure reducing valve MUST
be fitted if the supply pressures exceed 5 bar
running.
An expansion vessel MAY be fitted, and regularly
maintained, to prevent the shower mixer
being damaged by excess pressures. This may
already be installed within the boiler (check with
manufacturer) and is in addition to the normally
larger central heating expansion vessel.
Unvented mains pressure systems (fig.5)
The shower control can be installed with an
unvented, stored hot water cylinder.
For systems with no cold water take off after the
appliance reducing valve, it will be necessary to
fit an additional drop tight pressure-reducing
valve when the mains pressure is over 5 bar. The
drop tight pressure reducing valve must be set at
the same value as the unvented package pressure
reducing valve.
Note: An additional expansion vessel may be
required if a second pressure-reducing valve is
installed. This does not apply to packages with a
cold take off after the pressure-reducing valve to
the cylinder.
Service
valves
Balanced cold mains supply
Cold mains supply
Mixer
Expansion
vessel
Pressure
reducing valves
Stop tap
Unvented
hot water
storage unit
Safety devices
not shown
Kit
CH flow
Cold
mains
supply
Hot water
CH return
Service
valves
Mixer
Stop
tap
Expansion
vessel
Pressure
reducing valve
Combination
boiler
Kit
Mixer
*(kits are for illustration purposes only)
*Fig.4 *(diagrammatic view – not to scale)
*Fig.5 *(diagrammatic view – not to scale)

Concentric thermostatic mixer valve
6
Mains pressurised thermal store systems (fig.6)
Packages of this type, fitted with a tempering
valve (blender valve) can be used. A drop tight
pressure reducing valve MUST be fitted if the
supply pressures exceed 5 bar running.
An expansion vessel MUST be fitted, and
regularly maintained, to ensure, the unit, is
not damaged by excess pressures. This may
already be installed externally or internally within
the thermal store (check with thermal store
manufacturer).
Blender
valve
Flow
Cold mains supply
Hot
water
Stop tap
Expansion
vessel
Pressure
reducing valve Return
Service
valves
Mixer
Boiler
*(kits are for illustration purposes only)
*Fig.6 *(diagrammatic view – not to scale)

Concentric thermostatic mixer valve
7
*(kits are for illustration purposes only)
INSTALLATION (exposed fitting)
Preparing the mixer valve
Check the contents to make sure all parts are
present.
Before starting the mixer installation, make
sure all the openings on the valve are carefully
covered to stop ingress of any debris, etc. while
routing the supply pipework.
The shower valve is suitable for exposed installation
onto solid wall, a stud partition wall, dry lined wall
or fixing to a laminate cubicle or panel.
Siting of the shower and accessories
Refer to (fig.7) for correct siting of the shower.
The mixer valve should be positioned, as
detailed, with all controls within comfortable
reached of the user.
The accessories (showerhead, riser rail and/or
fixed showerhead) can be positioned above or to
either side of the shower, refer to (fig.7).
The valve must be installed in a position that
allows for easy access for future maintenance
and commissioning.
Supply pipe work
Complete the pipework to the shower area
having decided on the position of the shower
and direction of pipe entry (for example rising,
falling or rear entry)
The hot and cold water pipes should not
be permanently attached to the wall within
one metre of the valve, before installation is
complete, to allow for final adjustment of the
valve position.
Rear entry supplies
Using a spirit level, mark the route of incoming
hot and cold water supply pipes at a distance
of 150mm (approximately) between centres
(fig.8).
Height of
showerhead
and shower
to suit user’s
requirement.
Approx
30 - 35mm
Approx
150mm
*Fig.7 *(diagrammatic view – not to scale)
Fig.8

Concentric thermostatic mixer valve
8
FITTING THE MIXER
Mark the position of the four locating screws
for the mounting plate, although if installing to
a solid brick wall using two diagonal holes will
usually be enough.
Drill and plug the wall.
(An appropriate drill bit should be used. If the
wall is brick, plasterboard or a soft building block,
appropriate wall plugs and screws should be fitted).
Fit the mounting plate onto the wall (fig.9).
The inlet elbows allow for either rising, falling or
rear entry hot and cold water supplies. The elbows
have ‘O’ ring seals (fig.10) to the body and do
not require PTFE tape or other means of sealing.
IMPORTANT:
Make sure that all the supply pipework has
been flushed through before fitting the mixer
(fig.11).
O ring seal
Elbow
Fig.11
Fig.10
Fig.9

Concentric thermostatic mixer valve
9
Fit the trim onto the inlet water pipes followed
by the nut and olive (fig.12).
Connect the hot water supply to the inlet marked
HOT, ‘H’ or red/orange label and connect the
cold water supply to the inlet marked COLD, ‘C’
or blue label (fig.12).
Tighten all compression fittings
Tighten all the grub screws to secure the mixer to
mounting plate.
Outlet adapter and plug
The outlet adapter and plug can be repositioned
dependant on the outlet required (top or
bottom). The adapter has two end fittings, one
is suitable for a 15mm rigid pipe connection and
the other is a flexible hose connection. The O
ring may need to be removed if it is not on the
appropriate side of the hex nut and placed onto
the opposite side (fig.13).
Flow regulation
A flow regulator is supplied for use with high-
pressure water systems and may be fitted with
any of the systems listed to reduce flow rate and
assist economy.
To fit the flow regulator
To fit the flow regulators (flexible hose
connection) unscrew the outlet adapter. Place
the flow regulator, correctly, into the rigid pipe
connection end; please note the flow regulator is
only designed to work in one direction (fig.13).
The flow regulator for 15mm rigid pipe must be
fitted into the showerhead.
Flow regulator Water ow Angled top
section
Hose
connection
end
Outlet adaptor
O ring
15mm rigid
pipe connec-
tion end
Top
HOT
COLD
Trim
Nut
Olive
Fig.13
Fig.12

Concentric thermostatic mixer valve
10
INSTALLATION (built-in fitting)
Preparing the mixer valve
Check the contents to make sure all parts are
present.
Before starting the mixer installation, make
sure all the openings on the valve are carefully
covered to stop ingress of any debris, etc. while
routing the supply pipework.
The shower valve is suitable for built-in
installation in a solid wall, a stud partition wall,
dry lined wall or fixing to a shower cubicle or
panel.
Siting of the shower and accessories
Refer to (fig.14) for correct siting of the shower.
The mixer valve should be positioned, as
detailed, with all controls within comfortable
reached of the user.
The accessories (showerhead, riser rail and/or
fixed showerhead) can be positioned above or to
either side of the shower, refer to (fig.14).
Supply pipe work
Complete the pipework to the shower area
having decided on the position of the shower
and direction of pipe entry (for example rising,
falling or rear entry)
The hot and cold water pipes should not
be permanently attached to the wall within
one metre of the valve, before installation is
complete, to allow for final adjustment of the
valve position.
Rear entry supplies
Using a spirit level, mark the route of incoming
hot and cold water supply pipes at a distance
of 170mm (approximately) between centres
(fig.15).
Height of
showerhead
and shower
to suit user’s
requirement.
Bulkhead
(supplied)
Outlet to
bulkhead
170mm
Fig.15
*Fig.14 *(diagrammatic view – not to scale)

Concentric thermostatic mixer valve
11
BUILT-IN FITTING
The following are typical thicknesses and are
given as a guide only:
Tile 6 − 10mm
Adhesive 2 − 3mm
Plasterboard 9.5 − 12.5mm
Plaster finish 2 − 3mm
Maximum tile thickness to be 10mm
When installing into a stud partition or other
hollow wall structure, the installer may wish to
consider building rear supports or other options
for fitting the mounting plate. Such options are
beyond the scope of this guide.
Use the supplied cover plate or tiling shroud as a
template when cutting the opening for installing
the shower into a solid wall, stud partition or
hollow wall structure.
The building-in depth for the mounting plate is
given in (fig.16) from the plaster finish but this
is dependent upon tile and adhesive thicknesses.
The inlet elbows allow for either rising, falling
or rear entry hot and cold water supplies. The
elbows have ‘O’ ring seals (fig.17) to the body
and do not require PTFE tape or other means of
sealing.
Note: To ease future requirements for cleaning
and maintenance of the unit, it is advisable to
route both the incoming and outgoing pipework
from the same direction. Access to the integral
strainers will also be improved with this layout.
Installation in a solid wall
Decide on the shower position and determine
whether the hot and cold water supplies will
enter the shower from top (falling) or bottom
(rising) or rear.
Plaster finish
Tile
Adhesive
Face plate
55 mm
typical
45 mm
78 mm
Fig.16
O ring seal
Elbow
Fig.17

Concentric thermostatic mixer valve
12
As a guide for the size of hole, it should be large
enough to accept the valve complete with the
inlet and outlet fittings and also allow access for
connection to the pipework.
Remove the plaster and brickwork to the required
depth and chase out any additional areas of the
wall to give access to the pipework to and from
the valve plus any outlet fittings. Note that the
valve body requires a deeper recess than the inlet
and outlet fittings.
Note: The outlet pipework must end in a suitable
female thread parallel 15mm x ½” BSP fitting
(not supplied).
Offer the valve body up to the wall and mark the
fixing holes. Remove the valve, drill and plug the
wall. Route the pipework to valve body position.
Installation in a hollow wall
Decide on the shower position and determine
whether the hot and cold water supplies will
enter the shower from the top (falling) or bottom
(rising) or rear (fig.18).
When installing into a stud partition or other
hollow wall structures, the installer will need
to consider fabricating rear supports or other
options. Such options are beyond the scope of
this guide.
Mark the route of the incoming and outgoing
pipework.
Take out the plasterboard (use the cover plate or
tiling shroud as a template). Offer the valve body
up to the fabrication and mark the two fixing
holes.
Remove the valve and drill the holes. Route the
pipework to the valve position.
Installation in a panel or cubicle
When installing into a panel or cubicle structure
the installer will need to consider fabricating
rear supports or other options. Such options are
beyond the scope of this guide.
Typically, there should be at least 65mm space
from the surface of the panel to the rear of the
valve body.
IMPORTANT: Access to the rear of the
valve must be available.
Fig.18
Fig.19

Concentric thermostatic mixer valve
13
The controls require one hole to be cut out of the
panel or cubicle. Use the face plate as a template
to mark the hole positions then extend further to
allow access for the filters.
Route the pipework to valve position.
FITTING THE MIXER
Mark the position of the four locating screws
for the mounting plate, although if installing to
a solid brick wall using two diagonal holes will
usually be enough.
Drill and plug the wall.
(An appropriate drill bit should be used. If the
wall is brick, plasterboard or a soft building block,
appropriate wall plugs and screws should be fitted).
Fit the mounting plate (fig.19).
The inlet elbows allow for either rising, falling
or rear entry hot and cold water supplies. The
elbows have ‘O’ ring seals (fig.6) to the body
and do not require PTFE tape or other means of
sealing.
IMPORTANT:
Make sure that all supply pipework has
been flushed through before fitting the
mixer (fig.20).
Connect the hot water supply to the inlet marked
HOT, ‘H’ or red/orange label and connect the
cold water supply to the inlet marked
COLD, ‘C’ or blue label (fig.21).
Tighten all compression fittings.
Tighten all the grub screws to secure the mixer to
mounting plate.
Outlet adapter and plug
The outlet adapter and plug can be repositioned
dependant on the outlet required (top or
bottom). The adapter has two end fittings, one
is suitable for a 15mm rigid pipe connection and
the other is a flexible hose connection. The O
ring may need to be removed if it is not on the
appropriate side of the hex nut and placed onto
the opposite side (fig.22).
Hot
water
entry
Fig.21
Fig.20
Hose connection end
Outlet adapter
O ring
15mm rigid pipe connection end
Fig.22

Concentric thermostatic mixer valve
14
Appropriate
fitting
8mm 13mm
Finished surface
Fig.23
Fig.24
FITTING THE BULKHEAD OR
FIXED HEAD PIPEWORK
Complete the outlet pipework ending in a 15mm
x ½” BSP female thread elbow (fig.23).
Note: This fitting is not supplied as variations in
installations require the selection of a suitable
solder or compression fitting.
To install the fixed showerhead please refer to the
fitting instruction supplied with it.
To install the bulkhead screw the supplied male
connector into the female fitting (fig.24) using
PTFE tape to give a watertight joint.
Note: The male-thread connector supplied has
a shoulder. If fitting into a flush wall, make an
additional 8mm allowance for this shoulder at
the finished surface. The connector can be cut to
size if required.
The threaded connector should protrude from
the finished wall surface between 8mm and 13mm.
LEAK TESTING
Direct the outlet of the mixer to waste. Open the
isolating valves to the shower and check for leaks.
Remedy any leaks found.
MAKING GOOD
Make good the wall and complete the tiling.
• This product is supplied with a tiling shroud
to prevent damage to the product.
• If the tiles are accurately cut, then the
faceplate will seal around the hole in the
tiles, and the valve unit will be able to be
removed from the wall without the need to
break any tiles.
Make sure the grout lines around the valve are
flush with the tiles in order to provide a smooth
sealing surface for the coverplate.

Concentric thermostatic mixer valve
15
Push into the
bulkhead outlet
The ow regulator
is only designed
to have the ow of
water entering from
the top. The top
can be identied by
the angular lip
running around it.
Fig.26
Fig.25
BULKHEAD ASSEMBLY
Screw the bulkhead elbow to the bulkhead body.
Screw the completed assembly onto the
threaded connector temporarily to mark the
position of the two fixing holes for securing the
bulkhead to the wall.
Note: If screw thread protrudes too far out of the
wall, it can be cut to the correct length using a
hacksaw.
Unscrew and remove the bulkhead assembly.
Check the location of the pipe in the wall before
drilling.
Drill and plug the wall.
(An appropriate drill bit should be used. If the
wall is brick, plasterboard or a soft building block,
appropriate wall plugs and screws should be fitted).
If fitting to a hollow wall structure, it may be
preferable to secure the bulkhead by applying a
bead of silicon seal to the back of the bulkhead.
Apply PTFE tape to the threaded connector.
Screw the bulkhead assembly onto the threaded
connector until tight to the wall and the two
fixing holes are aligned. Secure to the wall
(fig.25).
Finish by clipping the cover onto the bulkhead,
making sure the protruding legs locate in the
bulkhead body.
Flow regulation
A flow regulator is supplied for use with high-
pressure water systems and may be fitted with
any of the systems listed to reduce flow rate and
assist economy.
To fit the flow regulator
To fit the flow regulators (flexible hose
connection) press it into the outlet of the
bulkhead, correctly, please note the flow
regulator is only designed to work in one
direction (fig.26).
The flow regulator for 15mm rigid pipe must be
fitted into the showerhead.

Concentric thermostatic mixer valve
16
Fig.27 ANTI-SCALD PROTECTION
It is important that the mixer valve is tested
regularly to prevent the risk of scalding and
guarantee user safety. This can be carried out as
follows: with the mixer blend temperature set
at 38°C isolate the cold water supply. The outlet
flow rate will reduce to a safe level.
Fitting the coverplate (built in only)
Fit the coverplate over the valve body and slide
tight to the wall.
Make sure the seal in the opening stays in place
as it slides over the valve body. A smear of liquid
soap on the seal will ease this procedure (fig.22).
The coverplate incorporates a silicon sponge
backing that seals against a smooth wall.
Once the plate has been fitted, the levers will
need to be fitted into the body of the mixer and
tightened (fig.29).
COMMISSIONING
Start the water flow by rotating the flow control
Make sure that both the hot and cold water
supplies are fully open and at (or near to) their
design temperature and pressures, and are within
the requirements as stated.
Make sure the temperature control is at the
maximum temperature setting.
Allow the shower to run at the maximum
temperature setting until the water temperature
has stabilised. Rotate the temperature control
until your desired maximum showering
temperature is reached.
The mixer has a temperature stop to prevent
accidental rotation to higher temperatures. This
is adjustable to provide a maximum temperature
of 35°C – 40°C and should be checked on site to
guarantee user safety.
Temperature adjustment range
The mixed water temperature can be adjusted
from cold through to a top limit (which can
be pre-set during installation – factory set
at approximately 38°C) with full anti-scald
protection throughout the range - SEE PAGE 17.

Concentric thermostatic mixer valve
17
Fig.28
ADJUSTING THE MAXIMUM
TEMPERATURE SETTING
Built in and Exposed
The mixer valve is supplied with the flow and
temperature knobs fitted and the maximum
temperature stop factory set to 38°C (this can be
adjusted during installation).
• To adjust the maximum temperature setting
allow the water to run until the temperature
has stabilised, adjust the temperature control
spindle by hand (fig.28).
• When the showering temperature is
satisfactory turn off the shower.
Recommended outlet temperatures
The BuildCert TMV scheme recommends the
following set maximum mixed water outlet
temperatures for use in all premises:
44°C - for bath fill but see notes below.
41°C - for showers.
41°C - for washbasins.
38°C - for bidets.
The mixed water temperatures must never
exceed 46°C at terminal fitting.
The British Burns Association recommends 37 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.
Temperature
spline

Concentric thermostatic mixer valve
18
FITTING THE CONTROLS
Built in and Exposed
Fit the controls using the following procedure:
• (fig.29-a) Fit washer A and then the flow
control lever so that it is in the 12 o’clock
position.
• (fig.29-b) Fit the washer B and then the
maximum temperature stop.
The end of the thin outer raised edge should
be around 2mm above the 3 o’clock position
with the grub screw fitting positioned on
the left hand side. Once the maximum
temperature stop in place, tighten the
retaining grub screw.
• (fig.29-c) Fit the temperature control,
making sure the maximum temperature
stop pin is as close to the flat edge of the
temperature stop as possible (the button
should be at the 3 o’clock position, as a guide).
Secure the temperature knob in place with
the retaining screw and fit the end trim.
Fig.29
2mm above 3 o’clock
a.
b.
c.
3 o’clock
position
12 o’clock
position
3 o’clock position
Retaining
grub screw
Washer A
Washer B