rada Autotherm-3 EV User manual

1
IMPORTANT
Installer: This Manual is the property of the customer
and must be retained with the product for
maintenance and operational purposes.
PRODUCT MANUAL
Rada BSM Shower Fittings
Rada Autotherm-3 Shower Fittings

2
If you experience any difculty with the installation or operation of your new
shower ttings, then please refer to FAULT DIAGNOSIS, before contacting
Kohler Mira Limited. Our telephone and fax numbers can be found on the back
cover of this guide.
CONTENTS
INTRODUCTION .............................................................................. 3
IMPORTANT SAFETY INFORMATION ............................................ 4
PACK CONTENTS CHECKLIST ...................................................... 5
SPECIFICATIONS ............................................................................ 8
DIMENSIONS................................................................................. 10
INSTALLATION REQUIREMENTS................................................. 11
INSTALLATION............................................................................... 12
OPERATION................................................................................... 16
FAULT DIAGNOSIS ........................................................................ 18
MAINTENANCE ............................................................................. 19
SPARE PARTS ............................................................................... 21
CUSTOMER CARE ..........................................................Back Cover

3
INTRODUCTION
* The economy setting reduces the water flow to give economical use of water, whilst
still giving an adequate shower performance.This setting performs best with most
gravity, pumped, and mains pressure unvented systems. On electric showers and
some combination boiler systems the economy setting will have no effect, and will
give the same spray action as the start setting.
**The security hose retaining ring for use with Category 5 risk installations is
permanently connected to the hose. It allows the hose to move through it for
showering, but complete withdrawal of the hose is prevented.
Thank you for purchasing a quality Rada 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 following shower fittings are covered by this guide:
Rada Autotherm-3 EV Shower Fitting
An adjustable spray handset with three different spray actions (start, force, soothe),
and an economy setting*, supplied complete with flexible hose, clamp bracket assembly,
slide bar, supports, soap dish, two parking sockets and hose retaining ring. Suitable
for connection to surface mounted shower controls. Available in chrome finish.
The adjustable spray handset is supplied with a low capacity spray plate fitted, a
high capacity plate is also supplied.
Rada Autotherm-3 EV CAT 5 Shower Fitting
Designed to comply with the requirements of a Fluid Category 5 risk installation (as
detailed in Water Regulations). As above but with special patented Security Hose
Retaining Ring** which replaces the standard hose retaining ring and no parking
sockets.
Rada BSM Shower Fitting
An adjustable spray handset,with three different spray actions. Supplied complete
with flexible hose, clamp bracket assembly, slide bar, hose retainer and supports.

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IMPORTANT SAFETY INFORMATION
Caution!
1. Read all of these instructions and retain this guide for later use.
2. Pass on this guide in the event of change of ownership of the installation
site.
3. Follow all warnings, cautions and instructions contained in this guide.
4. Anyone who may have difficulty understanding or operating the controls
of any appliance should be attended whilst operating. Particular
consideration should be given to the young, the elderly, the infirm, or
anyone inexperienced in the correct operation of the controls.
Warning!
Products manufactured by us are safe provided they are installed, used and maintained
in good working order in accordance with our instructions and recommendations.

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Rada Autotherm - 3 EV Shower Fittings
Tick the appropriate boxes to familiarize yourself with the part names and to
confirm that the parts are included.
2 x Fixing Screws
2 x End Caps
2 x Supports
2 x Wall Plugs
2 x Hose Seals
1 x Soap Dish
1 x Flexible Hose
1 x Slide Bar
1 x Clamp Bracket
Assembly
1 x Hose Retaining Ring




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
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





Documentation
1 x Product Manual

2 x Fixed Handset
Holder 
PACK CONTENTS CHECKLIST
1 x Handset with Low
Capacity Spray Plate
(small holes)
1 x High Capacity
Spray Plate (large holes)

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Documentation
1 x Product Manual
Rada Autotherm-3 EV (CAT 5) Shower Fittings
PACK CONTENTS CHECKLIST
2 x Fixing Screws
2 x End Caps
2 x Supports
2 x Wall Plugs
2 x Hose Seals
1 x Soap Dish
1 x Flexible Hose
1 x Slide Bar
1 x Clamp Bracket
Assembly
1 x Security Hose
Retaining Ring













Tick the appropriate boxes to familiarize yourself with the part names and to
confirm that the parts are included.

1 x Handset with Low
Capacity Spray Plate
(small holes)
1 x High Capacity
Spray Plate (large holes)

7
Documentation
1 x Product Manual
PACK CONTENTS CHECKLIST
Rada BSM Shower Fittings
2 x Fixing Screws
2 x End Caps
2 x Supports
2 x Wall Plugs
2 x Hose Seals
1 x Handset
1 x Soap Dish
1 x Flexible Hose
1 x Slide Bar
1 x Clamp Bracket
Assembly
1 x Security Hose
Retaining Ring












Tick the appropriate boxes to familiarize yourself with the part names and to
confirm that the parts are included.


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These are the typical pressure loss graphs for the Autotherm range of shower fittings.
There will also be an additional pressure loss through the shower control and outlet
hose/pipework (Pressure loss = Pressure difference between the inlet and outlet of
the fitting).
0 2 4 6 8 10 12 14 16 18 20
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0 5 252010 15
Rada Autotherm-3 EV range flow rates - High capacity spray plate assembly
Flow Rate (litres/minute)
Pressure Loss (bar) Pressure Loss (bar)
Rada Autotherm-3 EV range flow rates - Low capacity spray plate assembly
Force
Force
Start
Soothe
Start
Soothe
Shower Fittings Flow Performance Graphs
Flow Rate (litres/minute)
Economy
Economy
SPECIFICATION

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Rada BSM Shower Fittings range flow rates - Low capacity spray plate
assembly
Shower Fittings Flow Performance Graphs
Flow Rate (litres/minute)
Pressure - Bar
Flow Rate - L/min
0
0
12.0
10.0
8.0
6.0
4.0
2.0
14.0
1.0 2.0 3.0 4.0 5.0
16.0
18.0
20.0
With flow regulators
Without flow regulators
These are the typical pressure loss graphs for the Autotherm range of shower fittings.
There will also be an additional pressure loss through the shower control and outlet
hose/pipework (Pressure loss = Pressure difference between the inlet and outlet of
the fitting).

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Rada Autotherm-3 EV Shower Fittings Inlet Pressures
Minimum maintained pressure with flow regulators removed: 0.2 bar.
Maximum maintained static pressure: 7.0 bar.
Maintained pressures above the stated maximum could result in excessive spray
forces and possible damage to the product.
The high capacity spray plate should be fitted if the maintained inlet pressures at
the shower control are above 0.9 bar. For some gas water heater installations fitting
the high capacity spray plate is recommended.
48 mm
605 mm
DIMENSIONS
Rada BSM Shower Fittings Inlet Pressures
Minimum maintained pressure: 0.05 bar.
Maximum maintained pressure: 5.0 bar.

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INSTALLATION REQUIREMENTS
Installation must be carried out in accordance with these instructions, and
must be conducted by designated, qualified and competent personnel.
1. Before connecting the shower fitting the supply pipework MUST be flushed to
clear debris.
2. A hose retaining ring is supplied to prevent the handset from dropping below
the spill-over level of the bath or shower, which could lead to contamination from
back-siphonage. For category 5 installations, the category 5 fittings set MUST
be used.
3. Installations MUST comply with all the Local and National Water Supply Authority
Regulations and Byelaws (Scotland), Building and Plumbing Regulations in force
at the time of installation. The installation should be carried out by a plumber or
contractor who is registered, or is a member of, an association such as:
- Institute of Plumbing (IOP), throughout the UK.
- National Association of Plumbing, Heating and Mechanical Services
Contractors (NAPH & MSC), England and Wales.
- Scottish and Northern Ireland Plumbing Employers’ Federation (SNIPEF),
Scotland and Northern Ireland.
4. When installing the shower fittings in a cubicle, it is best positioned to spray
across rather than towards the opening of the cubicle.
5. Avoid layouts where the shower hose will be sharply kinked. This may reduce
the life of the hose.
6. Do not use excessive force when making connections.
7. Do not install the shower fitting in a position where it could become frozen.
8. Do not fit any form of flow control in the outlet pipework if the shower fitting is
installed in conjunction with a product that requires the fitting to act as a vent
(e.g. an electric shower).
9. Layout and sizing of pipework should be such that when other services are
used, pressures do not fall below the recommended minimum for the shower
fitting as this will cause the spray pattern to collapse.
10. For a gravity fed shower installation, the minimum pressure at the shower fitting
is 0.06 bar. To generate the minimum pressure and accommodate the pressure
loss in the pipes and shower control, a head of water of 1.5 metre is required
on a typical correct installation.
11. The shower fitting is connected to the bottom outlet of the shower control or
shower outlet of the bath shower mixer as appropriate.
General

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INSTALLATION
Read the section INSTALLATION REQUIREMENTS first.
The slide bar should be fixed to the wall to one side of the shower control, at a convenient
height for all the family. It should be positioned so that the handset discharges down
the centre line of the bath, or across the opening of a shower cubicle and should
be directed away from the shower control. For category 5 installations the security
hose retaining ring MUST be used.
Solid, dry-lined, stud partition, shower cubicle or
laminated panel walls
1. Decide on a suitable position for the
slide bar avoiding buried cables and
pipes. Make sure that when the hose
retaining ring is placed in the lowest
position on the slide bar, there is
a minimum of 40 mm between the
handset and bath/tray spill-over level.
Security Ring
40 mm
730 mm
2. For category 5 installations, secure
the lower slide bar support a minimum
730 mm above the top of the bath
spill-over level, avoiding any buried
cables and pipes. Make sure there
is a minimum of 40 mm between the
handset and top of the bath spill-
over level. This is to prevent back-
siphonage.
40 mm Minimum
Spill-over Level
Hose Retaining Ring

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3. Drill two 7.0 mm holes at 607 mm centres, avoiding any buried cables or pipes,
and fit the wall plugs supplied.
Note! Installers may wish to obtain alternative proprietary cavity fixings, when
installing on to a dry lined, stud partition, shower cubicle or laminated panel
wall structures. However, these methods of fixing are beyond the scope of
this guide.
4. Assemble the clamp bracket components.
5. Push the slide bar through the clamp bracket assembly. Push the soap dish
and the hose retaining ring onto the bottom of the slide bar. For category 5
installations the security hose retaining ring is already attached to the hose.
6. Insert the fixing screw into the hole of the slide bar support. Fit the bottom slide
bar support loosely to the wall to make aligning the top support easier. Push
the slide bar into the support.
7. Push the slide bar into the support. Place the screw through the top support
and fully tighten.
8. Fully tighten the bottom support.
9. Fit the end caps over the ends of the slide bar supports.
10. Screw the hose onto the outlet of the shower control, or the right angled connector
(Make sure that the hose seal is fitted). Do not overtighten (hand tight should
be sufficient).
11. Pass the flexible hose through the hose retaining ring (category 3 only) and
screw the remaining end of the hose onto the handset (Make sure that the hose
seal is fitted).
12. Place the handset into the slide bar clamp bracket.
Note! The clamp bracket is tapered. The handset will only fit properly from one
direction. If necessary turn the end of the clamp bracket until the handset will
fit.
The clamp bracket has a central securing screw which can be tightened to
increase the friction lock and prevent the handset from pivoting downwards.

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2. Hold the parking socket on the wall and mark the positions of the xing holes.
3. Drill the 8mm holes for the xing screws and insert the wall plugs (supplied).
Install the Parking Socket
1. Decide on a suitable location for the parking socket avoiding buried cables and
pipes.
5. Clip on the parking socket cover .
4. Secure the parking socket on the wall with the xing screws (supplied).
Note! You may find it easier to remove the ball socket to secure screws and
then re-fit.
Parking Socket
Fixing Screws
Ball Socket
Parking Socket
Cover
Note! Alternatively use proprietary cavity fixings for dry lined, stud partition,
shower cubicle or laminated panel walls.

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Fixing Screw
End Cap
Slide Bar Support
Wall Plug
Handset
Soap Dish
Flexible Hose
Slide Bar
Clamp Bracket
Assembly
Hose Retaining Ring
607 mm
(Handset may
differ from one
illustrated)

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OPERATION
Spray Action - Rada Autotherm-3 Fittings
The handset spray head has three different spray actions (start, soothe and force)
and economy setting.
4. Force
Turn the spray plate
anticlockwise until it 'clicks'
(three clicks from economy
setting). Water will flow from
the inner set of holes.
1. Economy Setting
Turn the spray plate fully
clockwise. Water will flow
from the outer set of holes
and the flow rate will be
reduced.
2. Start
Turn the spray plate
anticlockwise until it 'clicks'
(one click from economy
setting). Water will flow from
the outer set of holes.
3. Soothe
Turn the spray plate
anticlockwise until it 'clicks'
(two clicks from economy
setting). Water will flow from
the middle set of holes.

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OPERATION
Spray Action - Rada BSM Fittings
The handset spray head has four different spray actions: Eco, Start, Soothe and
Force. The handset operation is described below.
1. Eco
To access the eco setting, turn the
spray plate fully clockwise. Water
will flow from the outer set of holes
and the flow rate will be reduced.
2. Start
To access the start setting turn
the spray plate anticlockwise until
it 'clicks' (one click from the eco
setting). Water will flow from the
outer set of holes.
3. Soothe
To access the soothe setting turn
the spray plate anticlockwise until
it 'clicks' (two clicks from the eco
setting). Water will flow from the
large diameter holes.
4. Force
To access the force setting turn
the spray plate anticlockwise until
it 'clicks' (three clicks from the eco
setting). Water will flow from the
inner set of holes.

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FAULT DIAGNOSIS
Providing the shower fittings have been correctly installed and are operated in
accordance with the instructions contained in this guide, difficulties should not arise.If
any maintenance is required then it must be carried out by a competent tradesperson
for whom the fault diagnosis chart and maintenance instructions are provided.Before
replacing any parts ensure that the underlying cause of the malfunction has been
resolved.
Cause RemedyMalfunction
Drip from spray plate
assembly in handset.
Spray plate blocked.
Hose blocked, twisted or
damaged.
Refer to
MAINTENANCE,
"Cleaning".
Clear blockage, release
twist in hose or renew
hose.
No flow or low flow
rate from shower
fittings.
A small amount of water
may be retained in the
shower fitting after the
shower control has been
turned off. This may drain
over a few minutes.
This is quite normal.
Changing the angle of
the shower fitting may
vary the draining time.
Defective seal(s) in the
shower control.
Refer to shower control
Instruction Manual.
Shower handset
will not lock in any
position.
The clamp bracket has
a central screw that has
become slack.
Tighten the central
securing screw to
increase the friction
lock and prevent the
handset from pivoting
downwards.

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MAINTENANCE
Spray Plate Cleaning
Many household cleaners contain abrasives and chemical substances, and should not
be used for cleaning plated or plastic fittings.These finishes should be cleaned with
a mild washing up detergent or soap solution, and then wiped dry using a soft cloth.
1. Unscrew and remove the spray
plate assembly.
2. Remove the 'O' seals.
3. Clean all the components with a stiff
brush. If necessary use a plastic
kettle descalent in accordance with
the manufacturer's instructions.
Flush thoroughly with water before
the shower is used.
4. Refit the components in reverse
order.
5. Install the spray plate assembly.
Spray Plate
Spray Plate Assembly - Removal and Installation
The procedure for the removal and installation of the spray plate assembly is identical
for both the handset and the bir assembly.The handset procedure is described below.
Removal
1. Turn the adjuster ring fully
anticlockwise.
2. Unscrew the spray plate in an
anticlockwise direction. The 'O'
seals will provide some resistance.
Installation
3. Make sure that the four 'O' seals
are located correctly.
4. Turn the flow divertor fully clockwise.
Caution! Do not over tighten the
spray plate.
5. Carefully screw the spray plate
assembly on to the flow divertor.
The 'O' seals will resist the rotation
of the spray plate.
Handset Body
Assembly
'O' Seal 'O' Seal
Spray Plate
Assembly
Flow Divertor
'O' Seal
'O' Seal
'O' Seals

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1. Use your thumb or a soft cloth to wipe
any limescale from the soft nozzles
and the front surface of the handset
spray plate.
Handset spray plate - external