Mira Mir... - Installation

Mira Mir... - Installation
MIRA ELEMENT SLT
THERMOSTATIC MIXER
INSTALLATION AND USER GUIDE
These instructions must be left with the user.
1
CONTENTS
INTRODUCTION
Introduction2
Thank you for purchasing a quality Mira product. To
enjoy the full potential of your new product, please
take time to read this guide thoroughly, having
done so, keep it handy for future reference.
Guarantee3
Recommended Usage
3
Patents and Design Registration
3
Safety : Warnings
3
Pack Contents
4
Exposed Thermostatic Mixer
The Mira Element SLT thermostatic mixer is a
thermostatic shower control with a single lever
for on/off and temperature control. A Mid Flow
Overide feature allows up to 30% reduction in
flow at low pressures and a Temperature Overide
warns when moving into a hotter temperature
zone.
A 14 L/Min flow regulator is supplied for high
pressure systems to reduce excessive shower
force.
4
Built-in Thermostatic Mixer
4
Specifications
5
Pressures5
Temperatures5
Thermostatic Shut-down
5
Connections5
Flow Rates
The thermostatic mixer incorporates a wax
capsule temperature sensing unit, which provides
an almost immediate response to changes in
pressures or temperature of the incoming water
supplies to maintain the selected temperature. An
adjustable maximum temperature stop is provided
which limits the temperature to a safe level.
Inlet filters are fitted to protect the thermostatic
cartridge.
5
Dimensions6
Installation 7
Suitable Plumbing Systems
7
General7
Exposed Thermostatic Mixer
8
Built-in Thermostatic Mixer
10
Solid Wall or Stud Partition
Fixing using Rear Mountings
Panel Fixing using Securing
Brackets12
Solid Wall or Stud Partition
Fixing using Securing Brackets 13
RAC Assembly
Reversed Inlet Supplies
10
Mira Element SLT Exposed: Thermostatic
Mixer for connection to rising, falling or rear entry
pipework, supplied with L14A shower fittings.
Mira Element SLT Built-in: Thermostatic Mixer
for connection to concealed pipework, supplied
with L14D BIV shower fittings or BIR showerhead
arm and deluge head.
15
16
Operation18
These products have been certified as Type 2
valves under the BUILDCERT TMV2 scheme.
They also comply with the Water Supply (water
fittings) Regulations 1999.
Commissioning18
Maximum Temperature Setting
18
Type 2 Valves
19
Fault Diagnosis
20
Maintenance21
Spare Parts
23
Exposed Thermostatic Mixer
23
Built-in Thermostatic Mixer
24
RAC Assembly
25
If you experience any difficulty with the
installation or operation of your new
thermostatic mixer, please refer to ‘Fault
Diagnosis’, before contacting Mira Showers.
Our contact details can be found on the back
cover of this guide.
Accessories26
Notes
Customer Service
27
Back Page
2
Guarantee
SAFETY : WARNINGS
For domestic installations, Mira Showers
guarantee the Mira Element SLT against any
defect in materials or workmanship for a period
of five years from the date of purchase (shower
fittings for one year).
For non-domestic installations, Mira Showers
guarantee the Mira Element SLT against any
defect in materials or workmanship for a period
of one year from the date of purchase.
Mira thermostatic mixers are precision engineered
and should give continued safe and controlled
performance, provided:
1. They are installed, commissioned, operated and
maintained in accordance with manufacturer’s
recommendations.
2. Type 2 Valves are only used for applications
covered by their approved designations, refer
to section: ‘Type 2 Valves’.
3. Periodic attention is given, when necessary,
to maintain the product in good functional
order.
Caution!
1. Read all of these instructions.
2. Retain this guide for later use.
3. Pass on this guide in the event of change of
ownership of the installation site.
4. Follow all warnings, cautions and instructions
contained in this guide.
5. Anyone who may have difficulty understanding
or operating the controls of any shower should
be attended whilst showering. Particular
consideration should be given to the young,
the elderly, the infirm or anyone inexperienced
in the correct operation of the controls.
6. Rapid/Excessive movement of the flow
and / or temperature control levers may result
in momentary unstable blend temperatures.
7. Care is required when adjusting flow or
temperature, make sure that the temperature
has stabilised.
8. When this product has reached the end of its
serviceable life, it should be disposed of in a
safe manner, in accordance with current local
authority recycling, or waste disposal policy.
For terms and conditions refer to the back cover
of this guide.
Recommended Usage
Application
Valve with
Fittings
Domestic
ü
Light Commercial
ü
Heavy Commercial
û
Healthcare
û
Patents and Design Registration
Patents:
GB:
Euro:
USA:
2 291 693, 2 392 225, 2 421 297,
2 422 886
1 672 257 DE FR GB IT NL SE
7 240 850
Patent Applications:
GB:
0621637.8, 2 456 271
Euro:07015846.4
USA:
2006-0124758-A1, 2007-0221740-A1
World: WD 2008/053207
Design Registration:
000555768-0006, 000555768-0007
3
Built-in Thermostatic Mixer
PACK CONTENTS
q 1 x Thermostatic Mixing Valve
Tick the appropriate boxes to familiarise yourself
with the part names and to confirm that all of the
parts are included.
(attached to the building-in shroud)
Exposed Thermostatic Mixer
q 1 x Thermostatic Mixing Valve
q 1 x Control Assembly
q 3 x Compression Nuts
q 3 x Olives
q 2 x Concealing Plates
q 6 x Wall Plugs
q 6 x Fixing Screws
q 2 x Compression Nuts
q 1 x 2.5 mm Hexagonal Key
q 2 x Olives
q 1 x Multi Tool
q 2 x Wall Plugs
q 2 x Fixing Screws
q 1 x 14 L/Min Flow Regulator
q 1 x 2.5 mm Hexagonal Key
q 2 x Securing Brackets
q 1 x 14 L/Min Flow Regulator
q 4 x Bracket Securing Screws
q 2 x M5 x 40 mm
Securing Screws
q 1 x M4 x 8 mm
q 1 x Multi Tool
Hexagonal Screw
Not Illustrated
Documentation
q 1 x Guarantee Registration Document
q 1 x Installation Template
q 1 x RAC Assembly
(BIV models only)
Documentation
q 1 x Guarantee Registration Document
4
Thermostatic Shut-down
SPECIFICATIONS
• For safety and comfort the thermostat will
For Type 2 Valves, the supply conditions specified
in section: ‘Type 2 Valves - Application’ take
precedence over the operating parameters which
follow.
shut off the mixing valve within 2 Seconds if
either supply fails (achieved only if the blend
temperature has a minimum differential of
12°C from either supply temperature).
Connections
Pressures
• Inlets: 15 mm Compression.
• Outlet: ½” BSP Flat Face / 15 mm Compression
• Standard connections are: hot - left, cold -
• Max Static Pressure: 10 Bar.
• Max Maintained Pressure: 5 Bar.
• Min Maintained Pressure (Gravity System):
•
•
right, outlet - bottom (EV models), top (BIV
and BIR models).
0.1 Bar (0.1 bar = 1 Metre head from cold tank
base to showerhead outlet).
Note! For gravity fed or other low pressure
systems (0.5 bar or below) do not fit the outlet
flow regulator.
For optimum performance supplies should be
nominally equal.
Flow Rates
Typical flow rates on high pressure systems (1 to
5 Bar) with 14 L/Min flow regulator fitted - Mira
Element SLT with L14A Shower Fittings.
Flow Regulator Installation
Flow regulators are supplied with this product
and should be fitted in high pressure systems
to either;
Flow
FlowRate
Rate(l/min)
(l/min)
16
•
•
•
Reduce excessive force and flow rate.
Reduce noise through the mixer due to high
or unequal pressures.
Stabilise incoming supply temperatures.
Important! The fitting of flow regulators will
invalidate any TMV2 compliance due to minimum
flow rate requirements. Do not fit the flow regulator
in TMV2 applications.
10
8
6
4
1
1.5
2
2.5
3 3.5
4 4.5
5
Supply Pressure
Pressure (bar)
Supply
(bar)
Typical flow rates on low pressure systems (0.1 to 1 Bar) without flow regulator fitted - Mira
Element SLT with L14A Shower Fittings
• Factory Pre-set (Blend) Shower: 41°C.
• Note! Due to variations in site conditions the
maximum temperature may need adjustment.
• Temperature Overide set at 5°C below Factory
Preset.
• Optimum Thermostatic Control Range: 35°C
•
•
12
0.5
Temperatures
30
Flow
(l/min)
Flow Rate
Rate (l/min)
•
14
to 43°C (achieved with supplies of 15°C cold,
65°C hot and nominally equal pressures).
Recommended Hot Supply: 60°C to 65°C
Note! The mixing valve can operate at
higher temperatures for short periods without
damage, however this could detrimentally
affect thermostatic performance. For safety
and performance reasons it is recommended
that the maximum hot water temperature is
limited to 65°C.
Cold Water Range: up to 25°C.
Minimum Recommended Differential between
Hot Supply and Outlet Temperature: 12°C.
25
20
15
10
5
0
5
0
0.5
Supply Pressure (bar)
1
Dimensions
Exposed Thermostatic Mixer
116
153
Ø56
Ø62
142
35
Built-in Thermostatic Mixer
108
Ø183
30
60 - 80
55 - 77
Building-in Depth
All dimensions in mm
6
6. Decide on a suitable position for the Mixer.
The position of the Mixer and the Shower
Fittings must provide a minimum gap of 25 mm
between the spill-over level of the shower tray/
bath and the showerhead (refer to illustration).
This is to prevent back-siphonage. For further
information on the installation of your Shower
Fittings, refer to the Fittings Installation and
User Guide.
Note! Only use Shower Fittings recommended
by the manufacturer or supplier.
INSTALLATION
Suitable Plumbing Systems
Gravity Fed:
The thermostatic mixer must be fed from a cold
water cistern (usually fitted in the loft space) and
a hot water cylinder (usually fitted in the airing
cupboard) providing nominally equal pressures.
Mains Pressurised Instantaneous Hot Water
System (Combination Boiler):
The thermostatic mixer can be installed with
systems of this type with balanced pressures.
(Recommended Minimum Maintained Pressure:
1.0 Bar).
Hose Retaining
Soap Dish
Unvented Mains Pressure System:
The thermostatic mixer can be installed with an
unvented, stored hot water system.
Pumped System:
The thermostatic mixer can be installed with an
inlet pump (twin impeller). The pump must be
installed in a suitable location and in accordance
with its instructions.
25 mm Spill
Over Level
General
Installation must be carried out in accordance
with these instructions, and must be conducted by
designated, qualified and competent personnel.
The installation must comply with the “Water
Supply Regulations 1999 (Water Fittings)” or any
particular regulations and practices, specified by
the local water company or water undertakers.
Note! Make sure that all site requirements
correspond to the information given in section:
‘Specifications’. For Type 2 Valves see also
supply conditions in section: ‘Type 2 Valves’.
1. The Mixer must not be installed in an area
where it may freeze.
2. For stud partitions alternative fixings may be
required.
3. Isolating valves must be installed close to the
Mixer for ease of maintenance.
4. Pipework must be rigidly supported and avoid
any strain on the connections.
5. Pipework dead-legs should be kept to a
minimum.
7
3. For solid walls drill the holes for the backplate
with a 6 mm diameter drill and insert the wall
plugs.
Note! For other types of wall structure
alternative fixings may be required (not
supplied).
Exposed Thermostatic Mixer
Installing the Thermostatic Mixer
1. The thermostatic mixer can be installed with
rear, rising or falling supply inlets. Decide
on the most appropriate method for your
installation and if necessary, loosen the
grubscrews and rotate the inlet elbows to
suit.
Important! Make sure that the elbows are
pushed fully onto the mixer before tightening
the grubscrews, do not overtighten.
Wall Plug
Ø6 mm Drill
4. For Rear Entry Supplies Only:
a) Drill the holes for the supply pipes at
153 mm centres.
b) Recess the inlet holes Ø32 mm x 10 mm
deep to allow for the concealing plates.
Note! Depth must be sufficient to prevent
the concealing plates fouling on the
plumbing elbows.
5. Fit the supply pipework: Hot ‑ Left, Cold
- Right. For rear entry supplies the inlet
pipework should extend 18 mm from the
finished wall surface, for rising or falling
supplies the centre of the pipe should be set
35 mm from the finished wall surface.
Note! If it is not possible to install the mixer
with this pipework configuration complete the
installation then refer to section: ‘Reversed
Inlet Supplies’.
2. Use the installation template to mark the
positions of the holes for the backplate and
the pipe centres.
For rising or falling supplies the pipe positions
should be set 35 mm from the centre of pipe
to the finished wall at 153 mm centres.
Note! Allow a minimum of 150 mm either side
of the mixer to allow servicing of the hot and
cold inlet filters.
18 mm from finished
wall surface
Allow a minimum of
150 mm either side
of mixer to wall
Ø32 mm
Elbow
COLD
35 mm
10 mm minimum
between elbow
and finished wall
surface
HOT
Recess Ø32 mm
x 10 mm deep
8
18 mm
153 mm
14.Fit the shower fittings, refer to your shower
fittings installation and user guide for
instructions.
Note! For high pressure systems (above
0.5 bar) make sure that the flow regulator
(supplied) is fitted inside the outlet nipple (refer
to illustration).
Important! The fitting of this flow regulator will
invalidate any TMV2 low pressure compliance
due to the minimum flow rate requirements. Do
not fit the flow regulator in TMV2 low pressure
applications.
6. Remove the backplate from the mixer by
loosening the grubscrew with a 2.5 mm
hexagonal key.
7. Secure the backplate to the wall using the
screws.
8. For Rear Entry Supplies Only:
Fit the concealing plates over the inlet pipes.
Note! Apply silicone sealant to the back face
of the flange.
Flow Regulator
Note! Make sure that the flow regulator (supplied)
is fitted inside the outlet nipple in the orientation
shown.
Concealing Plate
15.Turn on the hot and cold water supplies and
check for leaks.
16.Before using the shower, refer to section:
‘Commissioning’.
Apply Silicone Sealant
9. Caution! It is essential at this point
that the supply pipework is thoroughly
flushed through before connection to the
mixer. Failure to do so may result in product
malfunction and will not be covered under the
guarantee.
10.Fit the compression nuts and olives onto the
pipework.
11.Align the mixer with the pipework and fit onto
the backplate.
12.Tighten the compression nuts onto the mixer
with a suitable spanner.
Caution! Take care not to damage the chrome
surfaces.
13.Tighten the grubscrew to secure the mixer to
the backplate.
9
5. Cut away the plasterboard and/or brick work
to the required depth.
Important! This depth ‘X’ will depend on the
finished wall thickness e.g. tiles or facia board.
Refer to the table for this measurement.
For stud partitions depth ‘X’ refers to the
distance from the rear mounting e.g. timber
noggin, to the front of the wall (before tiling).
Built-in Thermostatic Mixer
Solid Wall or Stud Partition Fixing
using Rear Mountings
1. Determine the route for the hot and cold supply
pipework and for the outlet pipework. When
connecting to the BIV Shower Fittings it is
recommended that the outlet be positioned
above and to one side of the mixer. This is to
prevent the flexible hose from obstructing the
shower controls.
2. Remove the two shroud screws then remove
the building-in shroud from the mixer.
Note! Refit the shroud screws to the mixer.
3. Determine the position of the mixer and draw
around the building-in shroud.
Finished Wall
Surface
Rear
Mounting
4. Mark the routes for the supply pipework at
108 mm centres (Hot ‑ Left, Cold - Right).
Falling Supplies: For falling supplies loosen
the grubscrew on each elbow using the 2.5 mm
hexagon key (supplied). Remove the elbows
and install on opposite sides. Retighten the
grubscrews.
Caution! Do not overtighten.
Note! Make sure that the ‘O’ seals are correctly
fitted and that the filter caps can be accessed
from the front (i.e. hexagonal key facing
forward).
Alternative Pipe
Layouts
Outlet Pipe BIV
Depth ‘X’
Outlet Pipe BIR
Outlet Pipe BIV
Thermostatic
Mixer
Hot Inlet
Cold Inlet
10
Finished Wall
Thickness
Finished Wall Thickness
(e.g. tile and adhesive)
Wall Cutout Depth
‘X’
4 mm
76 - 55 mm
6 mm
74 - 55 mm
8 mm
72 - 55 mm
10 mm
70 - 55 mm
12 mm
68 - 55 mm
14 mm
66 - 55 mm
16 mm
64 - 55 mm
18 mm
62 - 55 mm
20 mm
60 - 55 mm
6. Make sure that the mixer is level and central
in the hole and square to the finished wall
surface (or the control components will not fit
correctly), then mark the positions of the fixing
screw holes on the wall.
7. For solid walls drill two Ø6 mm holes for the
wall plugs.
8. Fit the hot and cold supply pipes (Hot - Left,
Cold - Right).
9. Caution! It is essential at this point
that the supply pipework is thoroughly
flushed through before connection to the
mixer. Failure to do so may result in product
malfunction and will not be covered under the
guarantee.
10.Insert the wall plugs and attach the mixer to
the wall with the screws provided.
Note! For stud partition installations alternative
fixings may be required (not supplied) to fix the
mixer to the rear face of the wall cavity or to a
timber noggin.
11.Make sure that the olives are fitted and connect
the hot and cold supply pipes, then tighten the
compression nuts.
13.Turn on the water supplies and check for
leaks.
14.Remove the two shroud screws and refit the
building-in shroud to the mixer.
15.Using the ‘Finished Wall Indicator’ on the
building-in shroud as a guide, finish the wall,
e.g. tiles.
Caution! Make sure that the finished wall
is within the maximum and minimum limits
and to an even depth (no greater than 2 mm
variation) or the control components will not fit
correctly.
Minimum finished
wall surface
Finished Wall
Min
F13125
Max
Maximum finished
wall surface
Outlet Pipe to Fittings
Shroud Screw
Screws
16.Remove the building‑in shroud and secure
the chrome trim to the mixer using two of the
bracket securing screws.
17.Fit the concealing plate and control assembly,
refer to section: ‘Control Assembly’.
Cold Supply
Hot Supply
12.Connect the outlet pipework and install the
RAC assembly or BIR assembly, before
continuing with the installation of the mixing
valve.
RAC assembly, go to section: ‘Installation,
RAC Assembly’.
BIR assembly, refer to your shower fittings
installation and user guide then continue with
instruction 13.
11
7. Caution! It is essential at this point
that the supply pipework is thoroughly
flushed through before connection to the
mixer. Failure to do so may result in product
malfunction and will not be covered under the
guarantee.
8. Secure the mixer with the M5 x 40 mm screws
as shown.
Panel Fixing using Securing
Brackets
Note! For laminated panels the mixer must be
positioned from the rear of the panel.
Panel thickness must be between 4 and 12 mm
(if a thicker panel is used, it will be necessary
to recess the securing brackets into the rear of
the panel).
Important! Make sure that there is a minimum
clearance of 64 mm behind the laminated panel
to conceal the mixer.
1. Refer to section: ‘Solid Wall or Stud Partition
Fixing using Rear Mountings’ and follow
build instructions 1 to 4.
2. Carefully cut out the laminated panel.
3. Fit the securing brackets to the mixer.
Important! The securing brackets must be
fixed vertically, as illustrated.
Important! Make sure that the correct holes
are used, otherwise the backplate cannot be
fitted.
4. Position the mixer on the front of the panel,
make sure that it is level and central in the
hole, then mark the position of the M5 fixing
holes.
Important! Make sure that the correct holes
are used (refer to illustration).
Note! Make sure that the Filter Plugs are
positioned so that they can be removed for
servicing.
M5 x 40 mm
Fixing Screws
9. Make sure that the olives are fitted, connect
the hot and cold supply pipes and tighten the
compression nuts.
10.Connect the outlet pipework and install the
RAC assembly or BIR assembly, before
continuing with the installation of the mixing
valve.
RAC assembly, go to section: ‘Installation,
RAC Assembly’.
BIR assembly, refer to your shower fittings
installation and user guide then continue with
build instruction 11.
M5 Fixing Hole
Backplate
Securing Hole
Outlet Pipe to
Fittings
Filter Plug
Backplate
Securing Hole
M5 Fixing Hole
Cold Supply
5. Drill the two Ø5.5 mm holes for the fixing
positions (countersink the holes at the front).
6. Fit the hot and cold supply pipes (Hot - Left,
Cold - Right)
Hot Supply
11.Turn on the water supplies and check for
leaks.
12.Fit the concealing plate and control assembly,
refer to section: ‘Control Assembly’.
12
4. Make sure that the mixer is level and mark the
positions for the countersunk fixing holes on
the wall.
5. For solid walls drill two Ø6 mm holes for the
wall plugs. Caution! Do not drill into pipes in
the wall.
6. Fit the hot and cold supply pipework (Hot Left, Cold - Right).
7. Caution! It is essential at this point
that the supply pipework is thoroughly
flushed through before connection to the
mixer. Failure to do so may result in product
malfunction and will not be covered under the
guarantee.
8. Insert the wall plugs and attach the mixer to
the wall with the screws provided.
Note! For stud partition installations alternative
fixings may be required (not supplied).
9. Make sure that the olives are fitted, connect
the hot and cold supply pipes and tighten the
compression nuts.
10.Connect the outlet pipework and install the
RAC assembly or BIR assembly, before
continuing with the installation of the mixing
valve.
RAC assembly, go to section: ‘Installation,
RAC Assembly’.
BIR assembly, refer to your shower fittings
installation and user guide then continue with
build instruction 11.
11.Turn on the water supplies and check for
leaks.
Solid Wall or Stud Partition Fixing
using Securing Brackets
1. Refer to section: ‘Solid Wall or Stud Partition
Fixing using Rear Mountings’ and follow
build instructions 1 to 4.
2. Remove the plasterboard and/or brick work to
a minimum depth of 55 mm.
4 mm Min
Finished Wall
Finished Wall
Surface
Securing
Bracket
20 mm Max
Finished Wall
55 mm Min
3. Fit the securing brackets to the mixer with the
bracket securing screws.
Important! Make sure that the correct holes
are used, otherwise the backplate cannot be
fitted.
Note! The securing brackets can be rotated
for suitable fixing points.
Outlet Pipe to Fittings
Countersunk Fixing Hole
Rotate for Suitable Fixing Point
Backplate Securing Hole
Screws
Cold Supply
Backplate Securing Hole
Hot Supply
Note! Securing Brackets shown
in preferred position to allow the
Compression Nuts to be tightened.
12.Remove the two shroud screws and refit the
building-in shroud to the mixer.
13
Minimum finished
wall surface
Finished Wall
Min
18.Fit the concealing plate over the mixer making
sure the slot is in the 6 o’clock position then
gently push until it clips onto the concealing
ring.
19.Fit the control lever to the mixer using the M4
x 8 securing screw, use the 2.5 mm hexagonal
key (supplied) to ensure it is tightened fully.
20.Clip the control lever trim onto the control
lever.
F13125
Max
Maximum finished
wall surface
Backplate
Control
Lever
13.Using the ‘Finished Wall Indicator’ on the
building-in shroud as a guide, finish the wall,
e.g. tiles.
Caution! Make sure that the finished wall
is within the maximum and minimum limits
and to an even depth (no greater than 2 mm
variation) or the control components will not fit
correctly.
14.Remove the building‑in shroud and secure
the chrome trim to the mixer using two of the
bracket securing screws.
15.Fit the concealing ring over the mixer and
mark the positions of the four fixing holes in
the orientation illustrated. The upper screw
hole should be located horizontally above the
valve in 12 ‘o’clock position.
Upper screw
hole must be
at 12 o’clock
position
Concealing
Plate
Control Lever
Trim
21.Before using the shower, refer to section:
‘Commissioning’.
Screws
Backplate
16.For solid walls drill four Ø6 mm holes for the
wall plugs. For other types of wall structure
alternative fixings may be required (not
supplied).
17. Insert the wall plugs and attach the concealing
ring to the wall with the screws provided.
14
6. Place the RAC backplate over the outlet pipe
with the arrow pointing up. The screw holes
should be at 45° to the horizontal.
7. Mark the positions of the two RAC backplate
fixing holes and drill two Ø5.5 mm holes.
Caution! Make sure that you do not drill into
pipework in the wall.
8. Hold the RAC wall plate in position on the
rear of the partition, insert the two backplate
screws and secure the RAC backplate to the
wall plate. Make sure that the foam seal abuts
the finished wall surface. Go to instruction build
18.
Installation of the RAC Assembly
1. Before the RAC assembly can be fitted you
must have first installed your built-in shower
control and have connected the inlet and outlet
pipework.
Important! Make sure that the outlet pipework
protrudes through a Ø25 mm hole in the wall
or stud partition by at least 40 mm.
Note! For stud partition installations where
access to the rear of the partition is possible,
fit the RAC wall plate over the outlet pipework
on the inside of the partition.
For stud partition installations where access
to the rear of the wall is not possible, follow
instructions for solid wall installations, making
sure that suitable wall fixings (not supplied) are
used to secure the wall plate to the outside of
the stud partition.
RAC Backplate
Backplate
Screws
RAC Wall Plate
(shown fitted for rear
access stud partitions only)
40 mm
9. Loosely attach the RAC backplate to the RAC
wall plate, using the two backplate screws
provided.
10.Place the RAC backplate/wall plate assembly
over the outlet pipe with the arrow pointing
vertically up. The screw holes should be at
40° to the horizontal.
11.Mark the positions of the two RAC wall plate
fixing holes.
Outlet Pipe to Fittings
Mixing Valve
Wall Plate
2. Temporarily cap off the outlet pipe, turn on the
water supplies and check for leaks.
3. Determine the finished wall position e.g. tile
thickness. Turn off the water supply, carefully
uncap the outlet pipe and cut to length, the
outlet pipe must protrude through the finished
wall surface by 21–23 mm.
Note! Remove any burrs from the pipes before
proceeding.
4. For solid wall installations or stud partition
installations without rear access go to build
instruction 9.
For stud partition installations with access to
the rear of the partition continue with build
instruction 5.
5. Finish the wall, e.g. tiles.
Arrow
40°
RAC Backplate
Backplate Screws
12.R emove the assembly from the wall and
separate the backplate from the wall plate.
15
13.For solid walls drill two Ø6 mm holes for the
wall plugs. For other types of wall structure
alternative fixings may be required (not
supplied). If necessary, make a recess 6 mm
deep to accept the wall plate for flush fitting of
the outlet to the wall surface.
14.Fit the two wall plugs supplied and secure the
wall plate with the wall plate screws.
15.Make sure that there is clearance behind the
wall plate and temporarily fit the two backplate
screws into the wall plate. This will prevent
the fixing holes from becoming blocked with
plaster or grout.
16.Finish the wall, e.g. tiles.
17.Place the backplate over the outlet pipe with
the arrow pointing vertically up and tighten the
two backplate screws. Make sure that the foam
seal abuts the finished wall surface.
21.Check that the second ‘O’ seal (black) is fitted
to the outside of the backplate nut. Press the
elbow onto the backplate, make sure that the
clips on the elbow engage with the backplate.
Elbow
RAC Backplate
Backplate
Screws
22.Slide the retaining ring over the elbow and
engage with the elbow clips. Note! The
retaining ring must be engaged correctly to
lock the elbow to the backplate, rotate the
retaining ring to the postition illustrated.
18.Check that the blue ‘O’ seal is fitted inside the
backplate nut. Fit the olive and the backplate
nut over the outlet pipe, do not tighten the nut
fully at this point.
Retaining Ring shown
correctly engaged with
Elbow
1
Olive
Screw
2
Backplate Nut
Slot
Retaining Ring
19.Check that the second ‘O’ seal (black) is fitted
to the outside of the backplate nut. Press the
elbow onto the backplate, make sure that the
clips on the elbow engage with the backplate.
20.To prevent the backplate from turning while
tightening the nut, fit the retaining ring over the
backplate nut making sure the slots engage
with the screws on the backplate, hold the
retaining ring with a wrench while tightening
the backplate nut. Remove the retaining ring
after use.
Note! For high pressure systems (above 0.5 bar) make
sure that the flow regulator (supplied) is fitted inside the
elbow in the orientation shown.
23.Press the shroud over the elbow, make sure
that it engages with the lugs on the backplate.
24.This completes the installation of the RAC
assembly.
16
6. Remove the dome shroud, bearing and
chrome trim if fitted (Built in Models only).
7. Fit the multi tool onto the cartridge nut and
turn anticlockwise. Unscrew fully and pull the
cartridge from the mixer body.
REVERSED INLET SUPPLIES
The Mira Element SLT thermostatic mixer is
supplied with inlet connections Hot - Left, Cold Right as standard. If the hot and cold water supply
pipes have been reversed during installation the
thermostatic cartridge must be removed and
rotated 180°.
1. Isolate the hot and cold water supplies and
operate the control lever to relieve pressure
and drain any residual water.
2. Use the slotted end of the multi tool (supplied)
inserted into the recess at the top of the control
lever to prise the control lever trim away.
Cartridge Seal
Multi Tool
8. Use the 2.5 mm hexagonal key or a suitable
sized screw driver to push the hinge pin from
left to right, releasing the lever insert (refer to
illustration).
Control Lever
Trim
3. Use the 2.5 mm hexagon key (supplied) to
remove the securing screw then remove the
control lever.
2.5 mm
Hexagonal Key
4. Built-in Models only:
a). Carefully unclip the chrome concealing
plate from the backplate. Note! Use the
multi tool in the cutout at the bottom of
the concealing plate to lever off.
b). Remove the two trim securing screws.
5. Use your finger or a small screwdriver to
rotate the dome clamp 90° in an anti-clockwise
direction, remove the dome clamp from the
dome shroud.
Hinge
Pin
Lever Insert
9. Repeat the procedure to remove the eco flow
device.
10.Rotate the cartridge 180°.
11.Refit the eco flow device in the location that
the lever insert was originally removed from,
pushing the hinge pin in from right to left.
Bracket
Securing
Screw
Swap positions.
i.e. Refit Lever
Insert where Eco
Flow Device was
originally.
Chrome Trim
(Built-in models only)
Lever
Insert
Bearing
Dome
Shroud
Dome
Clamp
17
Eco Flow
Device
12.Repeat the procedure to refit the lever insert
making sure that it re-engages correctly with
the cartridge.
Note! When the pin is fitted correctly it will be
flush with the Lever Insert.
OPERATION
The Mira Element SLT thermostatic mixer is a
thermostatic shower control with a single control
lever for flow and temperature control.
Note! You will notice a subtle ‘click’ when both
overriding the flow to full flow and the temperature
to maximum. This feature has been designed to
give subtle user feedback.
The control lever operates in the following
sequence:
Flow Control:
Lever
Insert.
Lever Insert
must re-engage
correctly.
13.Make sure that the two cartridge inlet seals
are fitted and carefully push the cartridge into
the body, aligning the cartridge lugs into the
body slots.
Note! Check that the cartridge lug stamped
‘H’ is aligned with the hot inlet supply.
Important! Take care when fitting the cartridge
as damage to the cartridge inlet seals may
result in dripping from the shower head.
14.Tighten the nut by turning the multi tool
clockwise.
Note! Please ensure it is tightened fully.
15.Reassemble in reverse order.
16.Before using the Shower, refer to section:
‘Commissioning’.
On
Off
Mid Flow Overide - Reduces water
flow by up to 30% (dependant on inlet
pressures) and can be overridden by
increasing flow to full.
Note! Due to the inclusion of the 14 L/Min outlet
flow regulator, the reduction in flow at high
pressure will be less significant.
Temperature Control:
Max Set
Temp
Cold
Warm
Temperature Overide approximately 5°C below
Max Set Temperature.
18
COMMISSIONING
TYPE 2 VALVES
Maximum Temperature Setting
Application
The approved designations for Type 2 Valves
are as follows:
Before using the shower the maximum temperature
must be checked to make sure that it is at a
safe level. It has been preset to approximately
41°C at the factory but due to variations in site
conditions the maximum temperature may need
adjustment.
The Temperature Overide is set at approximately
5°C below the Maximum Set Temperature.
Models
Designation
Mira Element SLT
LP-S, HP-S
Important! The fitting of any flow regulator
will invalidate TMV2 compliance due to the
minimum flow rate requirements. Do not fit
flow regulators in TMV2 applications.
Note! Make sure that the hot water temperature is
at least 55°C and that there is sufficient supply.
For Type 2 installations the maximum blend
temperature is determined by the application,
refer to section: ‘Type 2 Valves - Application’.
1. Turn on the shower to the maximum
temperature (i.e. fully anticlockwise) and allow
the temperature to stabilise.
If the temperature is too hot or too cold, adjust
as follows:
2. Use the slotted end of the multi tool (supplied)
to prise the control lever trim away from the
control lever.
3. Insert the 2.5 mm hexagon key (supplied)
into the recess in the centre of the cartridge
and engage with the temperature adjusting
screw.
4. Rotate the hexagon key until the required
maximum temperature is obtained at the
shower. Turn anticlockwise to increase the
temperature, or clockwise to decrease the
temperature (¼ turn = approximately 1°C).
5. Once the desired maximum blend temperature
has been achieved turn off the shower.
6. Check that the showering temperature is
correct.
7. Refit the control lever trim.
Conditions of use for Type 2 Valves
Operating Pressure
Range
High
Pressure
Low
Pressure
10
10
Maintained Pressure,
Hot and Cold (bar)
0.5 to 5
0.1 to 1
Hot Supply
Temperature (°C)
55 to 65
55 to 65
Maximum Static
Pressure (bar)
Cold Supply
≤25
≤25
Temperature (°C)
Valves operating outside these conditions cannot
be guaranteed to operate as Type 2 Valves.
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.
The maximum mixed water temperature can be
2°C above the recommended maximum set outlet
temperatures.
Note! 46°C is the maximum mixed water
temperature from the bath tap. The maximum
temperature takes account of the allowable
temperature tolerances inherent in thermostatic
mixing valves and temperature losses in metal
baths.
It is not a safe bathing temperature for adults
or children.
19
It is a requirement that all TMV2 approved
valves shall be verified against the original
set temperature results once a year. When
commissioning/testing is due the following
performance checks shall be carried out.
Measure the mixed water temperature at the
outlet.
Carry out the cold water supply isolation test by
isolating the cold water to the TMV, wait for five
seconds if water is still flowing check that the
temperature is below 46°C.
If there is no significant change to the set outlet
temperature (±2°C or less change from the
original settings) and the fail-safe shut off is
functioning, then the valve is working correctly
and no further service work is required.
Notes! If there is a residual flow during the
commissioning of the valve or the annual
verification (cold water supply isolation test), then
this is acceptable providing the temperature of
the water seeping from the valve is no more than
2°C above the designated maximum mixed water
outlet temperature setting of the valve.
Temperature readings should be taken at the
normal flow rate after allowing for the system to
stabilise.
The sensing part of the thermometer probe
must be fully submerged in the water that is to
be tested.
Any TMV that has been adjusted or serviced must
be re-commissioned and re-tested in accordance
with the instructions given in this guide.
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.
The thermostatic mixing valve will be installed in
such a position that maintenance of the TMV and
its valves and the commissioning and testing of
the TMV can be undertaken.
The fitting of isolation valves is required as close
as practicable to the water supply inlets of the
thermostatic mixing valve.
Commissioning notes for Thermostatic Mixing
Valves
The first step in commissioning a thermostatic
mixing valve is to check the following:
The designation of the thermostatic mixing valve
matches the application.
The supply pressures are within the valves
operating range.
The supply temperatures are within the valves
operating valve.
Isolating valves (and strainers preferred) are
provided.
If all of these conditions are met, proceed to
set the temperature as specified in section:
‘Commissioning’.
Important! The mixed water temperature at the
discharge point must never exceed 46°C
The installation of thermostatic mixing valves must
comply with the requirements of the Water Supply
(Water Fittings) Regulations 1999.
20
FAULT DIAGNOSIS
MAINTENANCE
If you require a Mira trained service engineer or
agent, refer to section: ‘Customer Services’.
General
This Product is precision engineered and should
give continued safe and controlled performance,
provided:
1. It is installed, commissioned, operated and
maintained in accordance with manufacturers
recommendations.
2. Periodic attention is given, when necessary,
to maintain the product in good functional
order.
The Mira Element SLT thermostatic mixer is
designed to need only minimal maintenance in
normal use. The only serviceable parts are the
inlet filters which should be checked and cleaned
every 12 months. If a malfunction occurs with the
thermostatic cartridge then this will necessitate a
complete cartridge replacement.
Note! The cartridge contains no internally
serviceable parts.
If you require a Mira trained engineer or agent,
refer to section: ‘Customer Service’.
Fault Diagnosis
Symptom:
Only hot or cold water from the mixer outlet.
Outlet temperature too hot / too cold.
•
•
Cause / Rectification:
Inlets reversed (hot supply to cold supply).
No hot water reaching mixer.
Check the filters for any blockage.
Installation conditions outside operating
parameters, refer to sections: ‘Specifications’
and ‘Commissioning’.
If the temperature is too cold and you have
a combination type boiler it may not be
producing sufficiently hot water at desired
flow rate (refer to ‘Specifications’). Fit flow
regulator (supplied) to shower valve outlet.
For more information contact Mira Showers
or visit the website.
•
•
•
•
•
Lubricants
Silicone based lubricants must only be used on
the rubber seals.
Caution! Oil based or other lubricant types may
cause rapid deterioration of seals.
—————————————
Symptom:
Fluctuating or reduced flow rate.
•
Cause / Rectification:
Check the showerhead, hose and filters for
any blockage and clean.
Make sure that the maintained inlet pressures
are nominally balanced and sufficient, refer to
section: ‘Specifications’.
Make sure that the inlet temperature
differentials are sufficient, refer to section:
‘Specifications’.
Flow regulator fitted incorrectly.
Air lock or partial blockage in the pipework.
•
•
Cleaning
The chrome plated parts should be cleaned using
a mild washing up detergent or soap solution,
rinsed and then wiped dry with a soft cloth.
Warning! Many household cleaners contain
abrasive and chemical substances, and should not
be used for cleaning plated or plastic fittings.
Do not use descalents on this product.
•
•
•
—————————————
Symptom:
Water leaking from showerhead.
•
Cause / Rectification:
Normal for a short period after shut off.
Check that the pressures are not in excess of
the specifications for the product.
Renew the thermostatic cartridge.
•
•
•
21
4. Carefully unclip and remove the concealing
plate from the backplate.
Note! Use a screwdriver in the cutout to assist
separation.
5. Unscrew the filter caps with the multi tool
(supplied) or a 12 mm hexagonal wrench and
remove the filters.
Note! Use pliers to carefully remove the
filters.
Inlet Filters
The inlet filters should be checked and cleaned
as necessary every 12 months.
Note! The inlet filters must not be removed except
for cleaning. If the thermostatic mixer is operated
without the inlet filters fitted the warranty on the
product will be void.
Exposed Models
1. Isolate the hot and cold water supplies and
operate the control lever to drain any residual
water.
2. Using the multi tool (supplied) to assist,
carefully remove the filter blanking caps then
unscrew the filter caps with the multi tool or
a 12 mm hexagonal wrench. Remove the
filters.
Filter
Filter Cap
6. Clean each of the filters under a jet of water
to remove any lodged particles.
7. Refit the filters and tighten the filter caps.
Note! Make sure that the seal is fitted correctly
and not damaged.
8. Turn on the hot and cold water supplies and
check for leaks.
9. Reassemble in reverse order.
Filter
Filter Cap
Filter Blanking Cap
3. Clean the filters under a jet of water to remove
any lodged particles.
4. Refit the filters and tighten the filter caps.
Note! Make sure that the ‘O’ seal is fitted
correctly and not damaged.
5. Turn on the hot and cold water supplies and
check for leaks.
6. Refit the filter blanking caps.
Built-in Models
Note! Refer to illustrations in section: ‘Control
Assembly (Built-in Models)’.
1. Isolate the hot and cold water supplies and
operate the control lever to drain any residual
water.
2. Use the slotted end of the multi tool (supplied)
or a suitably sized screwdriver inserted into
the recess to prise the control lever trim away
from the control lever.
3. Use a 2.5 mm hexagonal key to remove the
control lever securing screw then remove the
control lever.
22
SPARE PARTS
Exposed Thermostatic Mixer
1656.110
Seal Pack - Identified A
1656.169
Screw Pack - Identified B
1656.117
Inlet Connector Pack
1656.113
Backplate
B
A
B
A
1062477
Filter Pack (x2)
1656.111
Elbow Cap
A
1656.112
Elbow Assembly
1656.115
Outlet Connector
Pack
1656.114
Elbow Connector
Pack
1663.265
Flow Regulator
Pack
A
1656.166
Dome Shroud
Pack
1656.160
Cartridge
Assembly
1656.162
Control Lever
Pack
B
1656.161
Overide Pack
1656.121
Component Pack
1656.164
Multi Tool
23
B
Built-in Thermostatic Mixer
B
1595.150
Elbow Assembly
(Both sides)
1595.149
Outlet Connector
Pack
1595.066
Filter Pack (x2)
A
A
A
1656.167
Trim Pack
1656.160
Cartridge
Assembly
1595.046
Seal Pack - Identified A
1656.168
Screw Pack - Identified B
1656.161
Overide Pack
B
1656.166
Dome Shroud
Pack
1656.162
Control Lever
Pack
B
1656.165
Concealing Plate
Assembly
1656.163
Component Pack
1656.164
Multi Tool
24
RAC Assembly
450.20
RAC Mounting Pack
1663.265
Flow Regulator
Pack
450.20
RAC Mounting Pack
1617.171
RAC Shroud
25
ACCESSORIES
Genuine Mira accessories can be purchased direct from Customers Services (our contact details can be
found on the back cover of this guide) or from approved stockists or merchants.
Eco Showerhead
White - 2.1668.001
Chrome - 2.1668.002
The Eco shower head gives you an
invigorating shower, but reduces
water consumption and heating
costs.
Everclear Showerhead
White - 2.1616.030
Chrome - 2.1616.031
Mira's new Everclear range has been
specially designed for hard water
areas and reduces the risk of lime
scale build up.
Wall Mounted Soap Dish
White - 1.1540.278
Chrome - 1.1540.279
Wall mounted for use anywhere in, or
outside the showering area.
Shower Seat
White - 2.1536.128
White/Chrome - 2.1536.129
For use in or out of the showering
area. Note! Must be installed onto a
solid wall.
Shower seat folds up when not in use
Premium Shower Seat
White/Chrome - 2.1731.001
White/Chrome - 2.1731.002
Stylish, slim-line and robust shower
seat for use in or outside of the
shower area. Folds up when not in
use.
Maximum User Weight - 150kg
(23.5 stone) Note! Must be installed
onto a solid wall.
Showerhead Holder
White - 2.1605.149
Chrome - 2.1605.150
If you're looking for additional
flexibility in your shower, the Mira
Logic Showerhead Holder is the
perfect solution. Makes showering
easier for children, provides a
useful additional holder for your
Showerhead which fixes to the wall at
the desired height.
Mira Standard Grab Bars
300 mm - 2.1605.070
450 mm - 2.1605.071
600 mm - 2.1605.072
Premium grade, highly polished,
stainless steel grab bars. Note! Must be installed onto a solid
wall.
Outlet Double Check Valve (DCV-H)
Chrome - 1.0.110.55.1
DCV-H: An outlet double check valve,
designed to prevent the backflow
or backsiphonage of potentially
contaminated water, through shower
controls which are fitted with a
flexible hose as part of the outlet
shower fitting.
26
NOTES
27
CUSTOMER SERVICE
Guarantee
Your product has the benefit of our manufacturer’s
guarantee which starts from the date of purchase.
To activate this guarantee, please return your completed
registration card, visit our website or free phone 0800
0731248 within 30 days of purchase (UK only).
Within the guarantee period we will resolve defects in
materials or workmanship, free of charge, by repairing or
replacing parts or product as we may choose.
This guarantee is in addition to your statutory rights
and is subject to the following conditions:
● The guarantee applies solely to the original installation
under normal use and to the original purchaser only.
The product must be installed and maintained in
accordance with the instructions given in this user
guide.
● Servicing must only be undertaken by us or our
appointed representative. Note! if a service visit
is required the product must be fully installed and
connected to services.
● Repair under this guarantee does not extend the original
expiry date. The guarantee on any replacement parts
or product ends at the original expiry date.
● For shower fittings or consumable items we reserve
the right to supply replacement parts only.
The guarantee does not cover:
● Call out charges for non product faults (such as
damage or performance issues arising from incorrect
installation, improper use, lack of maintenance, build up
of limescale, frost damage, corrosion, system debris or
blocked filters) or where no fault has been found with
the product.
● Water or electrical supply, waste and isolation issues.
● Compensation for loss of use of the product or
consequential loss of any kind.
● Damage or defects caused if the product is repaired
or modified by persons not authorised by us or our
appointed representative.
● Routine maintenance or replacement parts to comply
with the requirements of the TMV 2 or TMV 3 healthcare
schemes.
● Accidental or wilful damage.
● Products purchased ex-showroom display.
What to do if something goes wrong
If your product does not function correctly when you first
use it, contact your installer to check that it is installed
and commissioned in accordance with the instructions in
this manual.
If this does not resolve the issue, contact our Customer
Services Team who will offer you or your installer help
and advice.
If you experience problems, check in this manual to see if
simple home maintenance is required. If you require further
assistance call our Customer Services Team.
Extended Guarantees
A selection of protection plans are available that
enable you to cover repair bills for the life of your policy
(excludes Eire). Ring 01922 471763 for more details.
Helpdesk Service
Our Customer Services Team is comprehensively trained
and can offer help and advice, spare parts, accessories or
a service visit.
We will need you to have your model name or number,
power rating (if applicable) and date of purchase. As part of
our quality and training programme calls may be recorded
or monitored.
Mira Showers Website (www.mirashowers.co.uk)
From our website you can register your guarantee,
download additional user guides, diagnose faults, purchase
our full range of accessories and popular spares, refer to
our FAQ’s and request a service visit.
Spares and Accessories
We maintain extensive stocks of genuine spares and
accessories and aim to provide support throughout the
product’s expected life.
Payment can be made by phone at time of order using
most major Credit or Debit cards and we aim to despatch
orders within 2 working days. Items purchased from us are
guaranteed for 12 months from date of purchase. For safety
reasons spares exposed to mains voltages should only be
fitted by competent persons.
Returns – items can be returned within one month of date
of purchase, providing that they are in good condition and
the packaging is unopened. If you wish to return any items
please notify us in writing within seven days of receipt.
Service / Repairs
We have a nationwide team of Service Technicians can
carry out service or repair work to your product within the
guarantee period and beyond. You have the assurance of a
fully trained Technician, genuine spare parts and a 12 month
guarantee on any chargeable work done.
Payment should be made directly to the Service Technician
who will accept most major Credit or Debit cards.
To Contact Us
UK
Telephone: 0844 571 5000
E-mail: [email protected]
Fax: 01242 282595
By Post: Mira Customer Services Dept, Cromwell Road,
Cheltenham, Gloucestershire, GL52 5EP
Eire
Telephone: 01 459 1344
E-mail: [email protected]
Fax: Dublin 01 459 2329
By Post: Modern Plant Ltd (Dublin),
Otter House, Naas Road, Clondalkin, Dublin 22
Mira is a registered trade mark of
Kohler Mira Limited.
The company reserves the right to alter
product specifications without notice.
1143423-W2-B (1617/1656) (B93B/B93E)
FM 14648
28
© Kohler Mira Limited, March 2011
Pdf Supplied By http://www.plumbworld.co.uk/
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