Specifications

8 mm
SAFETY : WARNINGS
• 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 Recommended Differential between Hot Supply and Outlet
Temperature: 12°C at desired ow rates.
• Minimum hot water supply temperature: 55°C.
SPECIFICATIONS
INSTALLATION
Installation of the Bar Valve
WARNING - This product can deliver scalding temperatures if not
operated, installed or maintained in accordance with the instructions,
warnings and cautions contained in this guide.
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.
Caution!
1. Read all of these instructions and retain this guide for later use.
2. Installation must be carried out in accordance with these instructions,
and must be conducted by designated, qualified and competent
personnel.
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. Make sure that you fully understand how to operate this shower before
use, read all operating instructions and retain this guide for future
reference.
6. This product is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience
and knowledge, unless they have been given supervision or instruction
concerning the use of the product by a person responsible for their
safety.
7. Children should be supervised to ensure that they do not play with the
product.
8. DO NOT perform any unspecied modications to the shower or its
accessories. When servicing only use genuine Kohler Mira replacement
parts.
9. DO NOT t any form of outlet ow control. Only Mira recommended
outlet ttings should be used.
10. DO NOT operate the temperature control rapidly, allow 10 – 15 seconds
for the temperature to stabilise before use.
11. Care is required when adjusting ow or temperature, make sure that
the temperature has stabilised.
12. Care is required if the product is turned off and back on during showering
as this may result in unstable temperature. Ensure temperature has
stabilised before re-using product.
13. Sunburn or skin conditions can increase your sensitivity to hot water.
Make sure that you set the shower to a cooler temperature.
14. The water supplies to this product must be isolated if the product is not
to be used for a long period of time. If the product or pipework is at risk
of freezing during this period they should also be drained of water.
15. 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.
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.
12. DO NOT overtighten connections, screws or grubscrews as product
damage may occur.
13. Upon completion of installation, or if the product is dismantled during
installation or servicing, then the product must be inspected to ensure
that there are no leaks.
14. Having completed the installation, make sure that the user is familiar
with the operation of the product.
Note! There will be occasions when the hose retaining ring will not provide
a suitable solution for Fluid Category 3 installations, in these instances an
outlet double checkvalve must be tted, this will increase the required supply
pressure typically by 10kPa (0.1 bar). Double checkvalves tted in the inlet
supply to the appliance cause a pressure build up, which affect the maximum
static inlet pressure for the appliance and must not be tted. For Fluid category
5 double checkvalves are not suitable.
Zone of
Backow Risk
30 mm
Minimum
Toilet or Bidet
FC5
Hand Basin
FC3
Bath or Shower
Tray FC3
Mixer
Shower
25 mm
Minimum
25 mm Minimum
General
Installation must be carried out in accordance with these instructions, and must
be conducted by designated, qualied and competent personnel.
The installation must comply with the “Water Supply Regulations 1999 (Water
Fittings)” or any particular regulations and practices, specied by the local
water company or water undertakers.
Note! Make sure that all site requirements correspond to the information given
in section: ‘Specications’.
1. The product must not be installed in an area where it may freeze.
Pipework to the product that could become frozen must be properly
insulated.
2. Do not install the product in a position in which service access is
restricted.
3. For stud partitions alternative xings may be required.
4. Isolating valves must be installed close to the product for ease of
maintenance.
5. Pipework must be rigidly supported and avoid any strain on the
connections.
6. Pipework dead-legs should be kept to a minimum.
7. If pipework enters the product from the rear through a hole in the wall,
provision must be made to prevent water ingress back into the wall
structure.
8. The position of the shower and shower ttings must provide a minimum
gap of 25 mm between the showerhead and the spill over level of any
bath, shower tray or basin and a minimum gap of 30 mm between the
showerhead and the spill over level of any toilet, bidet or other appliance
with a Fluid Category 5 backow risk (see diagram).
• 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 shower handset outlet).
Pressures
Temperatures
• For safety and comfort the thermostat will 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).
Thermostatic Shut-down
• Hot: Left - 1/2” BSP to pipework, 3/4” BSP to valve.
• Cold: Right - 1/2” BSP to pipework, 3/4” BSP to valve.
• Outlet: Bottom, 1/2” BSP Male to exible hose.
Connections
For new installations optimum
xing centres 510 mm.
8 mm
Note! Ensure an
equal length of
slide bar top and
bottom
Installation of the Shower Fittings
The Mira Universal Shower Hose has slightly different sized conical
connections at each end (the smaller diameter / longer length conical is
identied with a Red protective cover or White label).
The end with the red cover or white label connects to the showerhead, the
clear end connects to the valve.
Connection of the Shower Hose
8 mm
Red Protective
Cover or White
label. Remove
before Fitting
25 mm
25 mm
Wall Bracket
50 mm Min
150 mm
HOT
COLD
Plastic Pipe Guide
1. Fit the plastic pipe guide over the inlet pipes. Level the pipe guide and
secure to the wall to hold in position. Leave the guide in place and
nish the wall.
2.
3.
9. The showerhead should be positioned so that it discharges down the
centre line of the bath or across the opening of a shower cubicle.
10. Only use the inlet connections supplied with the product. DO NOT use
any other type of ttings.
11. All pipework must be checked for leaks before the product installation
is completed. The product should be pressurised & the inlet & outlet
connections inspected.
Ø6 mm
4. 5.
Drill the xing holes.
Install the wall plugs.
6. 7.
Install the xing screws.
Install the olives and the
connectors. Tighten nger tight
and then 1/4 to 1/2 turn.
8. 9.
Turn on the water supply and
ush the pipework.
Install the concealing plates.
10.
Assemble the bar valve with
a sealing washer/lter in each
inlet and attach to the wall
bracket.
Note! Connections are: Hot-
Left, Cold-Right.
11.
Install the shower ttings and
check for leaks.
1. 2.
4.
3.
6. 5.
8.
7.
Note! This product does not allow for reversed inlets and will deliver unstable
temperatures if tted incorrectly.