Mira Coda PRO ERD Manuale operativo
1
INSTALLATION & USER GUIDE
These instructions must be left with the user.
THERMOSTATIC BAR VALVE
MIRA CODA PRO ERD
2
INTRODUCTION
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.
The Mira Coda Pro ERD thermostatic bar valve
is a thermostatic shower control designed for wall
mount installations.
The thermostatic bar valve has two knobs, one
knob controls the ow and the other knob controls
the temperature.
The Mira Coda Pro ERD is supplied with a xed
showerhead, rigid riser and diverter assembly,
in addition to a single mode showerhead and
shower ttings kit.
The thermostatic bar valve 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 lters are tted to protect the thermostatic
cartridge.
Guarantee
For domestic installations, Mira Showers
guarantee the Mira Coda Pro ERD against any
defect in materials or workmanship for a period
of ve years from the date of purchase (shower
ttings for one year).
For non-domestic installations, Mira Showers
guarantee the Mira Coda Pro ERD against any
defect in materials or workmanship for a period
of one year from the date of purchase.
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: 2 407 138
Design Registration: GB: 001225254-0003
If you experience any difficulty with the
installation or operation of your new
thermostatic mixer, please refer to ‘Fault
Diagnosis’, before contacting Kohler Mira Ltd.
Our contact details can be found on the back
cover of this guide.
SAFETY WARNINGS
The function of a thermostatic mixing valve is to
deliver water consistently at a safe temperature. In
keeping with every other mechanism, it cannot be
considered as functionally infallible and as such,
cannot totally replace a supervisor’s vigilance
where that is necessary. Provided it is installed,
commissioned, operated and maintained within
manufacturers recommendations, the risk
of failure, if not eliminated, is reduced to the
minimum achievable.
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 the
manufacturer’s recommendations.
2. 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 difculty understanding
or operating the controls of any shower should
be attended whilst showering. Particular
consideration should be given to the young,
the elderly, the inrm or anyone inexperienced
in the correct operation of the controls.
6. Rapid/Excessive movement of the ow 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.
3
PACK CONTENTS
Tick the appropriate boxes to familiarise yourself
with the part names and to conrm that all of the
parts are included.
Documentation
q 1 x Guarantee Registration Document
q 2 x Wall Plugs
q 2 x Fixing Screws
q 1 x Securing Bracket
q 1 x Securing Bracket
Cover
q 1 x Pin
q 1 x Rigid Riser
Arm
q 1 x Mira Coda Pro
q 1 x Rigid Riser Rail
(supplied in 2 parts) q 1 x Fixed Showerhead
& Seal
q 1 x Diverter Assembly
(inc Nut, Olive & M4 x
5 mm Grubscrew)
q 1 x EV Fittings Kit
q 1 x 2 mm
Hexagonal Wrench
q 1 x Flow Regulator
(12 L/Min)
Bar Valve Fixing Kit
q 2 x Wall Plugs
q 2 x Wall Brackets
q 2 x Fixing Screws
q 2 x Concealing Plates
q 2 x Nuts & Olives
q 2 x Filters
q 1 x Plastic Pipe Guide
4
Dimensions
150 100 Min to Wall100 Min to Wall
Ø70
100
59
1000
145
340 80
190
Dimensions in mm
SPECIFICATIONS
Pressures
• Max Static Pressure: 10 Bar.
• Max Maintained Pressure: 5 Bar.
• Min Maintained Pressure: (Gas Water Heater):
1.0 Bar (for optimum performance supplies
should be nominally equal).
• Min Maintained Pressure (Gravity System):
0.1 Bar (0.1 bar = 1 Metre head from cold tank
base to showerhead outlet).
Note! 0.25 Bar when running both outlets.
Temperatures
• Close temperature control is provided between
20°C and 50°C.
• Optimum Thermostatic Control Range: 35°C
to 45°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
temperatures up to 85°C for short periods
without damage. However for safety reasons
it is recommended that the maximum hot water
temperature is limited to 65°C).
• Minimum Differential between Hot Supply and
Outlet Temperature: 10°C.
• Cold Water Range: 5°C - 25°C.
Thermostatic Shut-down
• For safety the thermostat will shut off the
hot supply within 2 Seconds if the cold
supply fails (achieved only if the hot supply
temperature is greater than 10°C above the
set blend temperature).
Connections
• Hot: Left (side nearest ow control), 15 mm
compression.
• Cold: Right (side nearest temperature
control), 15 mm compression.
• Outlet: top, 15 mm compression from diverter.
Note! This product does not allow for reversed
inlets and will deliver unstable temperatures if
tted incorrectly.
5
INSTALLATION
Suitable Plumbing Systems
Gravity Fed:
The thermostatic mixer must be fed from a cold
water cistern (usually tted in the loft space) and
a hot water cylinder (usually tted in the airing
cupboard) providing nominally equal pressures.
Gas Heated System:
The thermostatic mixer can be installed with a
combination boiler.
Unvented Mains Pressure System:
The thermostatic mixer can be installed with an
unvented, stored hot water system.
Mains Pressurised Instantaneous Hot Water
System:
The thermostatic mixer can be installed with
systems of this type with balanced pressures.
Pumped System:
The thermostatic mixer can be installed with
an inlet pump (twin impeller). The pump must
be installed on the oor next to the hot water
cylinder.
General
Installation must be carried out in accordance
with these instructions, and must be conducted by
designated, qualied and competent personnel.
The installation must comply with the “Water
Supply Regulations 1999 (Water Fittings)” or any
particular regulations and practices, specied by
the local water company or water undertakers.
Note! Make sure that all site requirements
correspond to the information given in section:
‘Specications’.
1. The mixer must not be installed in an area
where it may freeze.
2. For stud partitions alternative xings 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.
6. Decide on a suitable position for the mixer.
The position of the mixer and the shower
ttings 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.
Note! Only use shower ttings recommended
by the manufacturer or supplier.
7. All pipework must be checked for leaks before
the product installation is completed. The
product should be pressurised & the inlet &
outlet connections inspected.
8. DO NOT overtighten grubscrews as product
damage may occur. Use hexagonal key
provided and hand tighten only, do not use
powertools.
25 mm
Spill Over
Level
6
1. Install the pipework making sure that it is level and set the correct distance apart (150 mm) by using the
supplied plastic pipe guide.
Important!
1.1 Pipes must be left a minimum of 50 mm long in front of the wall surface.
1.2 Connections are: Hot-Left, Cold-Right. This is very important as the Mira Coda Pro does not
allow for reversed inlets.
1.3 Pipes must be straight and at 90° to the nished wall surface.
2. Fit the plastic pipe guide over the inlet pipes to
hold them in position.
3. Leave the plastic pipe guide in place and nish
the wall.
50 mm Minimum
150
Pipe Centres in Wall
HOT COLD
Plastic Pipe Guide
Inlet Pipes
Installation
7
4. Place the wall bracket over the inlet pipes and
mark the position of the 2 wall bracket xing
holes.
Note! Consider the position of concealed
pipework.
5. Mark the pipe distance 25 ± 5 mm from the
nished wall.
6. Drill the 2 holes for the wall brackets with a 6
mm drill and insert the wall plugs (some wall
structures may require alternative xings, not
supplied).
Caution! Take care not to drill though any
concealed pipework.
7. Secure the wall brackets to the wall with the
xing screws supplied.
Caution! Make sure that you do not push
the pipe into the wall cavity.
8. Install the olives onto the inlet pipes and tighten
the nuts.
Ø6 mm
25 mm
25 mm
Fixing Screw
Olive
Nut
8
9. Caution! It is essential at this point that
the supply pipework is thoroughly ushed
through before connection to the bar valve.
10.Install the concealing plates,and tighten the
concealing plates until they are ush with the
nished wall.
11.Make sure that the sealing washer/lter is
fitted, offer the bar valve up to the offset
connectors and tighten the nuts.
Caution! Take care not to damage the chrome
plated surfaces.
12.Install the diverter and rigid riser assembly,
go to section: ‘Diverter and Rigid Riser
Assembly Installation’.
13.Install the shower ttings.
14.Turn on the hot and cold water supplies and
check for leaks.
15.Before using the shower, refer to section:
‘Commissioning’.
Sealing Washer/Filter
9
Diverter and Rigid Riser Assembly
Installation
1. Fit the diverter onto the mixer outlet and
tighten the M4 x 5 mm grubscrew with a 2 mm
hexagonal key (supplied)
Note! The diverter must be tted as illustrated,
with the diverter knob at the right and the outlet
at the back of the mixing valve.
2. Screw the rigid riser rail together then into the
rigid riser arm.
3. Locate the rigid riser rail into the diverter
outlet and the rigid riser arm into the securing
bracket, make sure that they are pushed fully
home.
Important! Align the rigid riser arm with the
securing bracket using the pin. Then, using a
spirit level make sure that the rigid riser rail
is vertical and mark the position of the xing
holes for the securing bracket on the wall.
Caution! Do not cut the rigid riser rail.
4. For solid walls drill the xing holes for the
securing bracket with a 6 mm drill and insert
the wall plugs (supplied). For other types
of wall structure alternative xings may be
required (not supplied).
5. Secure the securing bracket to the wall using
the screws (supplied).
Rigid Riser
Overhead Arm
Rigid Riser
Rail
Securing
Bracket Cover
Securing Bracket
Fixing Screws
Wall Plugs
Spirit Level
Pin
10
6. Slide the clamp bracket, hose retaining ring,
compression nut and olive onto the rigid riser
rail and locate into the diverter outlet.
7. Make sure that the securing bracket cover is
tted onto the rigid riser arm, then x the pipe
to the securing bracket with the pin. Screw
the securing bracket cover over the securing
bracket.
8. Tighten the compression nut using a suitable
spanner.
Note! Hold the diverter in position whilst
tightening the compression nut.
9. Fit the 12 L/Min ow regulator into the hose
then screw the hose onto the outlet of the
diverter, making sure that the hose seal is
tted.
10. Pass the flexible hose through the hose
retaining ring and screw the remaining end of
the hose onto the showerhead making sure
that the hose seal is tted.
11. Place the showerhead in the clamp bracket.
18.Make sure that the hose washer is tted and
screw the xed showerhead onto the rigid riser
arm.
12.Turn on the hot and cold water supplies and
check for leaks.
13.Before using the shower, refer to section:
‘Commissioning’.
Pin
Clamp Bracket
Compression Nut
Olive
Hose Seal
Hose
Securing Bracket
Securing Bracket
Cover
Hose Retaining
Ring
12 L/Min Flow
Regulator
Indice
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