MX Neptune Showers Solo User manual

IMPORTANT!
This Step-by-Step guide should be given to the customer
after installation and demonstration.
Instantaneous Electric Shower
Installation Instructions
SERVICE POLICY
In the event of you needing to contact the MX Group Customer Service Department,
the following procedure should be followed:-
If a service call is booked, you or a representative must be present
during the Engineers visit.
Before telephoning the MX Group Customer Service Department you
should ensure that you have the model number, power rating, serial
number and date of purchase.
The MX Group Customer Service Department will be able to inform you
whether the fault can be rectified by the provision of a replacement
part or an on site visit by a Qualified Service Engineer.
If the product is no longer covered by the Guarantee, a charge will
be made for the site visit and for any parts supplied.
A charge will be made where a call under the terms of the guarantee
has been booked and a failure was not product related, or an engineer
arrives and is not able to gain access.
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Customer Service Department
01489 773126
9.00 am - 5.00 pm Monday to Friday

205 mm
298 mm
Shower Unit
Showerhead
Showerhead Key
Flexible Hose
Slider Rail Tube
Slider Rail Brackets
Slider Rail Showerhead Holder
Hose Retaining Ring
Screw Pack
Shower Installation must be carried out
by a suitably qualified person and
conform with IEE Regulations and
National Water Council bylaws.
This shower unit is designed to be
connected to a 15mm cold water mains
supply.
Do not connect to a tank supply
unless a suitable booster pump is
fitted.
The minimum recommended running
water pressure to which the shower
heater may be connected is 15 lb/sq in
(1 Bar). Running pressure at 8 litres per
minute.The maximum static pressure
recommended is 150 lb/sq in (10 Bar).
(Minimum running pressure must be
obtained at 9 litres/minute for 9.5kW and
11 litres/minute for the 10.5kW.
The shower unit must not be fitted
where it may be exposed to frost, for
example in an outdoor area.
The shower must not be used if
suspected of being frozen.
Frost damage is not covered by the
guarantee.
Plumbers jointing compound must
not be used.
In instances of difficult joints use P.T.F.E.
Tape. The use of compound invalidates
the guarantee.
IMPORTANT
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2
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4
PACK
CONTENTS
1
1
SECTION
PACKING CONTENTS
The following points will help you to
understand how your MX shower unit
operates.
The stabiliser valve maintains an almost
constant shower temperature during mains
water pressure changes.
2
PACK
CONTENTS
1
2
SECTION
GENERAL ADVICE TO
SHOWER UNIT USERS
All plumbing connections must be
completed before making the electrical
connections.
The outlet of your shower acts as a vent
and must NOT be connected to any
form of tap or fitting not recommended
by The MX Group..
Always switch of at the isolating switch
when not in use.
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The flow rate of water passing through the
shower unit determines the water
temperature. The lower the flow the
warmer the water, the higher the flow the
cooler the water.
The temperature produced by the shower
unit will vary between seasons on any one
setting of the temperature control. This is
due to variance in the temperature of the
water supply, which becomes cooler in
winter than summer.
If changes in temperature are experienced
in normal use, it is likely to be caused by
water pressure falling below the minimum
level. Falls in water pressure may be due
to water being drawn off at other points
within the building.
The shower head must be cleaned regularly
to remove scale and debris. If the water
becomes hot and you are unable to obtain
cooler water, check the spray head for
blockage.

MAX CABLE
RUN
KW
RATING
NOMINAL
AT 240v
MIN RATING OF
ISOLATING
SWITCH
FUSE
RATING
6mm 10mm
7.0 29.10amps 30 amps 30 amps 29m 48m
7.5 31.25amps 40 amps 40 amps 27m 44m
8.0 33.33amps 40 amps 40 amps 25m 42m
8.5 35.41amps 40 amps 40 amps 23m 38m
9.5 39.58amps 40 amps 40 amps 21m 32m
10.5 43.75amps 45 amps 45 amps 18m 30m
2
PACK
CONTENTS
1
5
SECTION
PLUMBING CONNECTION
Plumbing the shower unit must
precede wiring.
Turn off the water supply at the isolating
stop tap.
Determine the direction of the inlet water
supply: Top (falling), Bottom (rising), or
Back inlet.
IMPORTANT
REMOVE
FOR BOTTOM
PLUMBING
ENTRY
After flushing the pipework ensure
that the shower unit is positioned
squarely on the wall and tighten the
screws. Tighten all plumbing connect
-ions and check the pipework for leaks.
Before turning on the water supply
to the shower unit the water supply
pipe should be flushed out to remove
debris. This can be achieved by
connecting the flexible hose to the
15mm compression elbow and turning
on the mains water supply long
enough to clear the debris.
Connect the mains water supply to the inlet
of the shower unit using a 15mm copper or
stainless pipe with a 15mm compression
Elbow or 15mm push-fit elbow. Do not use
excessive force when making the
connection to the unit.
From the consumer unit via a double pole
linked switch with a minimum contact gap
of 3mm. The switch must be readily
accessible and clearly identifiable and out
of reach of a person using a fixed bath or
shower tray, unless the switch is cord
operated. The wiring must be connected
to the switch without the use of a plug or
socket outlet.
The cable size required is determined by
the kW rating of the shower and the
distance between the shower and the
consumer unit. The table above will help
you choose the correct cable for your
installation, but it will depend upon the
precise circumstances of the installation. If
you are in any doubt consult an electrician.
The back plate and the trim plate are fitted
with removable inserts for fitting over the
pipework to the shower unit.
The shower unit must be permanently
connected to the electricity supply, direct
2
PACK
CONTENTS
1
6
SECTION
ELECTRICAL CONNECTION
Warning! This appliance
must be earthed
The incoming cable should be hidden.
Ensure that the terminal block
screws are fully tightened and that
no cable insulation is trapped under
screws,
Ensure the cable clamp is used to
secure the cable.
The earth continuity conductor of
the electrical installation must be
effectively connected to all exposed
metal parts of other appliances and
services in the room in which the
shower unit is installed to confirm
with IEE regulations.
IMPORTANT
Connect the live cable to the terminal
marked L.
Connect the neutral cable to the terminal
marked N.
Connect the earth cable to the terminal
marked Eon the back plate.
Avoid connecting the shower unit, if
possible, were it will be affected by water
drawn off by other appliances, e.g. From
the mains feed to the W.C., This may
cause a drop in pressure too low for the
shower unit to work correctly.
An isolating valve must be fitted into the
water supply for servicing purposes.
Plan your own installation carefully. Check
on the nearest and most readily accessible
rising mains water supply, this may be
beneath the bath or in the loft, where it
feeds the cold water storage tank. Use
only the cold rising water main supply.
Do not connect the shower unit to
the down service from the tank.
Position your shower unit on the wall away
from the direct spray of the shower and at
about the same height as the shower head
position.
2
PACK
CONTENTS
1
3
SECTION
GENERAL LAYOUT OF A
SHOWER INSTALLATION
A TYPICAL INSTANTANEOUS ELECTRIC SHOWER INSTALLATION
water heater
MX electric
accordance with local authority regulations
double pole heater switch wall mounted in
separate permanently
from consumer unit
connected supply
Isolating
stop tap
Cold
water
mains
supply
2
PACK
CONTENTS
1
4
SECTION
INSTALLATION
The shower unit should be positioned so
that the shower head cannot be immersed
in the bath or shower tray when hanging
down.
To comply with National Water
Council bylaws a double check valve
must be fitted with all flexible shower
accessories where it is possible that
the shower head may come into
contact with used water i.e. In the
bath or shower tray.
IMPORTANT
Place the shower unit on the wall and mark
the location of the fixing screws through the
back plate.
Remove the two screws securing the
shower unit cover and remove the cover
complete with the control knobs.
Carefully drill the holes as marked using a
sharpe 5.5mm masonry drill.
Fix the shower unit to the wall using the
plugs and screws provided, do not fully
tighten at this stage.
(either top, bottom or rear entry)
Mains cold water supply
Hose Retaining
Ring

knob anti-clockwise to the full cold position.
Turn the top power selector knob to the
LOW (Single Large Solid Red Dot - Sited
at the 9 o’clock position) setting, this
action will also activate the internal solenoid
valve turning the water On.
Now turn the top power selector knob
to the ‘High’ setting (Double Solid Red Dot
Symbol). The temperature at the
showerhead will rise further - this shows
that the full power setting is operating
correctly.
9. Turn the bottom temperature control
knob clockwise for hotter water and
anti-clockwise for cooler water. Allow a
few seconds between selections - for the
temperature change to reach the
showerhead.
3. Ensuring the water supply is fully on at
the mains stop cock and isolating service
valve (if fitted), check that water is not
leaking from the bottom of the case.
4. Switch on the electrical supply at the
double pole switch. The ‘Power’ neon
indicator will light.
5.
Check that
water flows freely from the shower within a
few seconds. The water from the
showerhead will be at full force and at a
cool temperature.
6. Rotate the bottom temperature control
knob slowly clockwise fully. This will
gradually reduce the flow with the water
temperature remaining cool.
7. Return the knob anti-clockwise to
maximum flow.
8.
2
PACK
CONTENTS
1
7
SECTION
FITTING THE COVER INTO
POSITION
2
PACK
CONTENTS
1
8
SECTION
RISER RAIL FITTING
INSTRUCTIONS
TIPS
A piece of insulating or masking
tape applied to the wall before
marking out the Fixing holes will help
stop the drill from wandering,
particularly on tiled surfaces. When
working near a basin or bath, insert
the plug in the waste fitting so that
small parts cannot be lost.
Take care not to drop accessories
or tools into basin or bath.
CAUTION
Check there are no hidden cables
or pipes before drilling holes for wall
plugs. Exercise great care when using
power tools near water. The use of a
residual current device (RCD) is
recommended.
2
PACK
CONTENTS
1
9
SECTION
COMMISSIONING THE
SHOWER
NOTE: It is necessary to align the ‘D’ flat
on the reverse side of the Power Selector
and Temperature knobs with their opposite
control spindles before the cover is located.
Secure the cover with the two fixing screws
provided.
IMPORTANT
Turn the flow control knob anti-
clockwise until the valve is fully
open before switching on the unit.
This will ensure a fast fill up of the
unit when the shower is first
switched on.
Switch on the power to the shower unit at
the consumer unit and the double pole
switch. At this stage the power selector
knob should be on the STOP position.
IMPORTANT
The shower unit must be full of
water before the HIGH heat settings
is used.
Turn the top power selector knob to the
STOP position.
Re-fit the shower head to the flexible hose.
Remove the shower head from the fexible
hose and point to waste.
Turn the top power selector knob to the
LOW
setting, this
action will also activate the internal
solenoid valve turning the water on. Let the
water flow through the shower unit to
release any air which may be in the system
and fill the shower unit with water.
(Single Large Solid Red Dot - Sited
at the 9 o’clock position)
Your shower is now ready to use. We
recommend that you allow your shower to
reach a stable temperature before you
commence showering.
NOTE. When the temperature is
changed the flow rate alters.
location notch on top of the rail, making
sure that the rail slot is located into the
notch. Ensure the hole position is vertically
aligned and mark the wall. Remove the rail
and bracket, then drill and plug the wall.
5. Slide the height adjuster onto the rail.
Tighten to the rail by turning the locking cap.
Then fit the hose retaining ring onto the
bottom of the rail.
6. Replace the rail assembly into the lower
bracket. Refit the top bracket, ensuring the
slot in the rail is located into the bracket
notch and fix to the wall.
7. Slide covers onto both brackets.
8. Firmly attach flexible hose to showerhead
making sure sealing washer is in place.
NOTE: The adjustable slider grips the
conical end of the hose, not the handle of
the showerhead.
3. Position the lower bracket and mark the
wall for the screw fixing. Then drill and plug
1. Establish position for the riser rail, and
mark the wall for the lower mounting
bracket. Make allowances for the tallest
person likely to use the shower regularly.
2. Remove covers from the wall brackets.
M
the wall and fix the lower bracket without
the rail location notch.
4. Fit the rail into the lower bracket.
Place the remaining bracket with the rail
1. Make sure that the top power selector
knob is in the STOP position and that the .
Electrical supply has been isolated at the
double pole isolating switch..
2. Turn the bottom temperature control
the top power selector knob to the
STOP position to stop the flow.
10. Turn

11. Switch of pull-cord or wall mounted
switch.
2
PACK
CONTENTS
1
10
SECTION
OPERATING THE
SHOWER
1. Switch on pull-cord or wall mounted
switch. The ‘Power’ neon will illuminate
indicating the switch is on.
2.
3. Select your power setting using the top
control. The shower has two positions
‘Low’ power and ‘High’ power.
‘Low’ setting
.
Turn the top power selector knob to the
LOW (Single Large Solid Red Dot - Sited
at the 9 o’clock position) setting, this
action will also activate the internal solenoid
valve turning the water On.
(Single Larger Solid Red Dot
- Sited at the 9 o’clock position)
This is the low power setting for
economy during warmer months or
when a cool shower is required.
Temperature adjustment is via the
bottom temperature control.
‘High’ setting (Double Solid Red Dot):
This is the full power setting.
Temperature adjustment is via the
bottom temperature control.
4. Wait a few seconds for the warmer
water to reach the handset.
5. If necessary turn bottom ‘Temperature’
control knob slowly to obtain desired
showering temperature. Again, waiting a
few seconds after each adjustment in
temperature to reach the handset.
Note:
To adjust the shower temperature.
The water temperature is altered by
increasing or decreasing the flow rate
of water through the shower unit via
the temperature control.
To increase the shower temperature
Turn the temperature control knob
clockwise, this will decrease the flow
of water and increase the shower
temperature.
To decrease the shower temperature
Turn the temperature control knob
anti-clockwise, this will increase the
flow of water and decrease the shower
temperature.
6. Turn the top power selector knob to the
STOP position to stop the flow.
7. A small amount of water will be retained
in the showerhead after the shower has
been turned off. This may drain over a few
minutes.
8. Switch Off pull-cord or wall mounted
switch.
2
PACK
CONTENTS
1
11
SECTION
OPERATING FEATURES
LOW
STOP
HIGH
WARMER COOLER
Power Neon Indicator
The ‘Power’ neon indicator will be
illuminated when the shower unit is
switched on and water is flowing on the
heat settings.
I
2
PACK
CONTENTS
1
12
SECTION
SHOWRHEAD CLEANING
INSTRUCTIONS
The showerhead should be cleaned
periodically to remove limescale or debris
which will reduce the performance of the
shower. The frequency of cleaning will vary
according to local water quality.
PERIODICAL MAINTENANCE
3. If scale deposits are stubborn,
soak the showerhead in a
proprietary limescale remover
and rinse thoroughly before use.
2. Some showerheads are fitted
with self clean probes, to help
the removal of limescale. These
probes can be activated by
rotating the lever clockwise.
1.To break away scale deposits
on a daily basis simply rub your
thumb over the surface whilst
the shower is running.

GUARANTEE
The MX Group guarantee this product for a period of one year,
from date of purchase, against mechanical and electrical defects
arising from faulty materials or from poor workmanship, providing
the product has been installed by a competent person in
accordance with the fitting instructions.
The MX Group undertake to repair or replace, at their discretion,
without charge, provided the product has been properly maintained
and operated in accordance with the operating instructions.
Any component found to be defective during this period, as the
result of misuse or damage, or the effects of scaling, will not be
covered by this guarantee.
This product must not be modified, repaired or taken apart except
by a person authorised by The MX Group.
This Guarantee is only valid within the United Kingdom and does
not cover product used commercially.
This Guarantee does not affect your statutory rights.
The MX Group
Alpha Close, Delta Drive, Tewkesbury Industrial Estate,
Tewkesbury, Glos. GL20 8JF
Telephone: [phone] Fax: [phone]
ATTENTION!
Do not operate the shower unit if the sprayhead or
hose becomes damaged.
Warning: If re-starting the shower immediately after
stopping, be aware that a slug of hot water will be
expelled for the first few seconds.