Heatrae Sadia DART 2005 Guide

Please leave with the user
Booklet No. 3600 5903 Issue 1
DART 2005
Installation an User Instructions
Please rea an un erstan these instructions
before starting work
Heatrae Sa ia Heating, Hurricane Way,
Norwich, Norfolk NR6 6EA.
For Service enquiries call 01603 420330
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Figure 1.0 Major Internal Components
Figure 1.1 Internal Circuit Diagram
Page 2
CONTENTS
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YOUR SHOWER Recognition of major components
Circuit Diagram
SECTION ONE Important information for installers and users
How an instantaneous shower works
SECTION TWO Siting and Plumbing
SECTION THREE lectrical Installation
SECTION FOUR Connecting the shower to services
SECTION FIVE Fault-Finding
SECTION SIX User Instructions
NB Due to product variations the precise appearance of your shower may not be exactly as depicted in this leaflet.
Dimensions and functioning are unaffected.
Page 3
SECTION ONE Important Information
Your shower is designed and tested to the very highest standards and complies fully with all of the relevant
national/international standards for safety and reliability.
The shower is manufactured in a BS N ISO 9001:2000-registered factory - your assurance of a quality product.
To ensure correct use and maintenance of the shower, please read and adhere to the following warnings and
guidelines.
For Installers:
1.1 The Installation must comply with the Building Regulations Part P and the Water Regulations. Where there is a
new installation, or a replacement product is not identical to the one being replaced, the cable sizes, circuit protective
devices, bonding and other requirements of the Building Regulations must be assessed by a (registered) qualified and
competent electrican, who should carry out the installation taking into account the site conditions. To meet the
requirements of the lectrical Safety.
Standard ( N 60335), 4mm2 cable should not be used to install showers with a rating of more than 7.7kW (at 240V)
and 6mm2 cable should not be used to install showers with a rating of more than 9.6kW (at 240V).
1.2 WARNING: THIS APPLIANCE MUST BE EARTHED.
1.3 Before removing your shower heater cover always ensure your shower heater is isolated from the electrical mains.
1.4 This product is splash-proof, and is approved for use in shower cubicles and over baths. However, do not install
the shower heater in a position where the handset, in its normally-parked position, will consistently direct spray over
it.
1.5 To comply with the Water Regulations a servicing valve must be fitted in the pipework to the shower, in an
accessible place. This will be of great benefit if any maintenance work, or complete replacement of the shower, is
required later on.
1.6 This shower is designed for domestic use and is not vandal-resistant. If it is installed in an institutional or
commercial situation, frequent inspection may be necessary, and our guarantee may be affected.
For Users:
1.7 If water emerges from anywhere other than the spray head outlets, do not use your shower, and refer to the fault-
finding section.
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1.8 IT IS IMPORTANT TO CLEAN THE HANDSET SPRAY PLATE REGULARLY, particularly in hard water areas,
where this may be necessary as often as once a week. Failure to do so will affect the performance of the shower, and
in extreme cases may cause the pressure relief device to operate.
Refer to Section 6.
1.9 The shower heater outlet, hose an han set act as a vent. They must not be blocke , obstructe , or
have connecte to them any fitting not approve by us. The use of unapproved accessories may invalidate the
guarantee and affect the performance and safety of the unit.
1.10 WARNING: DO NOT US the shower if the HOS IS DAMAG D in any way; for instance if the outer covering
has parted to reveal the inner tube. A damaged hose can suddenly restrict the flow and result in extremely hot water
from the spray head.
A damaged hose could completely block the outlet of the shower; the resulting increase in pressure could burst a
weakened or damaged hose.
1.11 Do not install the shower in a situation where the water in it could freeze. Any damage caused by freezing will
not be covered by the guarantee.
WARNING. If you suspect your shower of being frozen, DO NOT SWITCH ON. If you have switche on,
SWITCH OFF IMMEDIATELY.
Refer to Fault-Finding, Section Five.
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1.12 Do not leave young children, the infirm or disabled unattended in the shower.
1.13 Before stepping into the shower, always test the temperature of the spray with your hand.
1.14 Switch off at the isolating switch after use. This is a safety procedure recommended with ALL electric
appliances.
1.15 As with all electrical appliances, it is recommended to have your shower and installation checked at least every
two years by a competent electrician, to ensure there is no deterioration due to age and usage.
1.16 Shampoo and shower gel should be stored using the gel hook and soap dish (where provided) and must not be
place on top of the shower unit.
How an instant electric shower works
1.17 In an instant electric shower, an electric element heats water AS IT PASS S THROUGH. The temperature of
the shower is adjusted by controlling the rate at which water flows over the heating element. This is done using a flow
control knob. There is no thermostat. If the temperature of the incoming water varies (mains water can be as low as
5°C in winter and as high as 20°C in summer), the output temperature will also vary. The shower is only able to
RAIS the temperature of the water by a given amount (depending upon the flow rate).
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Figure 1.17 Showing how the water is heate as it passes through.
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SECTION TWO Siting an Plumbing
Spend some time planning exactly where to site the shower heater and riser rail.
Bear in mind the height of people who will be using it.
Tools you may nee :
- Adjustable spanner giving at least 25 A/F
- Flat blade screwdriver with blade width 5-6mm
- No 2 Pozidriv screwdriver with a bit in good condition
- Sharp Stanley knife
- Round file
- Pipe cutters
- lectric drill and 7mm dia (N° 14) masonry bit
- Wire cutters
- lectrician's insulation strippers
Other items you may nee :
- 15mm compression elbow or straight connector for connection to the shower unit
- 15mm isolating valve
Things you must o:
2.1 It is advisable to check that the water pressure to the shower is adequate. If in doubt, consult a competent
plumber.
Max: 1 MPa.
Min: Up to and including 9.5kW: 0.09 MPa Over 9.5kW: 0.11 MPa
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The minimun figures are running pressures with at least 5 l/min flowing.
The use of other services connected to the water pipe supplying the shower heater may cause the water pressure to
drop below the minimum.
Figure 2.6 Siting of riser rail an heater.
The following conversions may be useful:
1 bar =14.5 lbf/in2
=33.3 ft head of water
=10m head of water
=0.1MPa
1 lbf/in2= 2.3ft head.
2.2 lectric shower heaters are normally plumbed into the mains water (except for special low pressure versions).
However, the shower heater may be fed from a storage tank as long as there is a sufficient head of water.
2.3 Mount the shower heater on a flat vertical wall with the outlet, to which the hose is connected, pointing
downwards. The shower must be securely fixed to the mounting surface using suitable mechanical fixings in the three
mounting points. Adhesive must not be used.
2.4 nsure that the shower heater is not in the direct spray of a normally parked handset.
2.5 Allow room around the shower heater for removal of the front cover.
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2.6 Position the riser rail close to the heater, not necessarily on the same wall (but bear in mind paragraph 2.4) so
that, in its highest parked position the handset is no more than 610mm (24") above the bottom of the heater, and in
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its lowest position no lower than 305mm (12") below the heater (see Fig. 2.6).
2.7 Remember that if the handset can reach to within 25mm (1") of the spillover level of the bath, shower tray, wash
basin, WC or bidet, then to prevent the possiblity of back-siphonage of used water, you must either:
(i) install a hose-restraining ring (see Fig. 2.6)
(ii) fit a double-check valve in the pipework to the shower.
2.8 Decide from which direction your pipe will enter the shower heater. There is a choice of top, bottom, rear or side.
See Section Four for details.
2.9 nsure there are no services such as gas, water pipes, electrical or telephone cables beneath the surface of the
wall before drilling.
2.10 The water connection to the shower heater should be made using standard 15mm outside diameter copper pipe
or stainless steel pipe. The ends should be cut square and be free from internal and external burrs and deep
scratches. Where possible, use a pipecutter and not a saw, to prevent saw chippings entering the pipe.
Figure 2.10
2.11 Before making the final water connections to the shower heater, the pipework MUST B FLUSH D
THOROUGHLY to remove brick dust, swarf etc. which could severely damage the shower itself. (See Fig. 2.11)
Figure 2.11
2.12 A servicing valve must be fitted in the water supply pipe to the shower to comply with the Water Regulations.
This is to allow the shower heater to be serviced without turning off the water supply to other appliances.
Things you must not o:
2.13 Do not use plumber's paste on any joints as this may damage the shower.
2.14 Do not use a blow-torch or other form of heat close to the shower heater as this may damage the non-metallic
parts.
2.15 Do not use excessive force, and do ensure adequate support, when making connections.
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SECTION THREE Electrical Installation
WARNING:
THIS APPLIANC MUST B ARTH D
The Installation must comply with the Building Regulations Part P. Where there is a new installation, or a
replacement product is not identical to the one being replaced, the cable sizes, circuit protective devices, bonding
and other requirements of the Building Regulations must be assessed by a (registered) qualifed and competent
electrican, who should carry out the installation taking into account the site conditions.
3.1 The shower must only be connected to a 230V-240V ac supply
Figure 3.3 Schematic iagram of straightforwar installation circuit
3.2 Before making any electrical connections within the installation, make sure that no terminal is live.
If in doubt, switch off the whole installation at the consumer unit or switch fuse (where fitted).
3.3 It is strongly recommended that a 30mA rcd is incorporated in the circuit, even if it is not required to comply with
BS 7671.
3.4 A double-pole isolating switch with a contact separation of at least 3mm in each pole, must be incorporated in the
circuit.
This must have a mechanical indicator showing when the switch is in the OFF position. A neon lamp alone is not
sufficient.
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SECTION FOUR Connecting the Shower to Services
PREPARATION:
4.1 Remove the fixing screws which hold the front cover to the backplate. Note that the upper screws are different
from the lower one.
4.2 Carefully remove the cover, which holds the control knob and push buttons captive, by pulling directly away from
the backplate. Do not twist, otherwise you may snap the fixing lugs on the front cover.
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Figure 4.2
4.3 Carefully take out the removable bottom section of the backplate by lifting its sockets clear of the pegs on the
backplate (See Fig. 1.0). This section allows greater access for installing the cable and pipe. Keep it safe, as it could
easily be damaged.
4.4 Decide which entry points you will use for cable and water pipe (See Fig. 4.8).
4.5 Decide where to mount the shower. Refer to Section Two for guidance. nsure that you leave enough room
around the shower for removal of the front cover for inspection or servicing at a later date.
4.6 It is best to mount the shower on top of any tiling, so that it can be replaced easily in the future without requiring
re-tiling. If you must tile around the shower, DO NOT grout right up to the shower backplate as this makes
subsequent removal difficult. Do not seal the shower to the wall using bath sealant, as the shower will not be harmed
by water dripping behind it.
4.7 Remove the relevant areas of the backplate, which are not knockouts, using a sharp knife and/or a round file.
Cable an Pipe Entries:
Cable Entry
4.8 Available entry points: Top, bottom and rear (rear is generally the easiest). Side entry is not possible. The
thinned areas in the backplate and bottom section are suitable for a cable size up to 16mm2.
For rear entry, cable must emerge from the wall only in the areas specified in Fig. 4.8. You will need at least 280mm
of cable to emerge from the wall to allow connection to the terminal block.
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Figure 4.8 Backplate imensions (in mm)
Pipe Entry
4.9 Available entry points: Top, bottom, rear and right hand side (bottom is generally the easiest). The inlet spigot
is smooth, 15mm diameter and is designed to accept a 15mm compression fitting. This must be an elbow for top,
bottom and rear entry, and a straight connector for side entry. (See Fig. 4.9) You should use compression rings
(olives) made of copper, rather than brass, as copper will crush down better onto the plastic spigot. Push-fit
connectors cannot be used.
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Figure 4.9 Connection of pipe to inlet (top entry shown). Not to scale.
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Rear Entry
If the pipework is to enter from the rear, you must cut away the wall from around the pipe to allow room for the nut on
the compression elbow to be recessed into the wall (See Fig. 4.11). The pipework MUST be connected to the elbow
B FOR the shower is fitted to the wall; if you were to fix the pipe in place first, you would not be able to get a
spanner onto the compression nut.
Figure 4.11
Depending on the type of compression elbow used, you may need to remove a small part of the bottom section of the
backplate in order for it to fit over the elbow nut.
Top Entry
You must connect the LBOW to the INL T SPIGOT first; if you were to connect the elbow to the pipe first, there
would not be enough room within the pipe channel in the shower to manoeuvre the elbow onto the spigot.
Si e Entry
You must use a straight connector with an overall length (including nuts and olives) of less than 42mm.
Plumbing:
4.10 Decide where to connect to the water mains for your feed to the shower.
nsure that the pipe you have selected is not a gas pipe (they can look similar) or a hot water pipe, nor from a cold
water storage tank (unless you have sufficient head - see Section 2.2).
4.11 Cut the necessary pipework to length, assemble and offer up to the installation before making any soldered
joints. nsure that the pipe is the correct length, since to shorten it can be difficult once joints have been made.
4.12 Carry out any cutting with pipe cutters in preference to a hacksaw, to minimise swarf. Use 15mm compression
fittings, preferably with copper compression rings (olives), for the connection to the shower heater.
4.13 Remember to incorporate a servicing valve and, if required, a double-check valve (see Section 2.7).
4.14 Locate your stop cock, and turn off the water supply. Check that the pipe you intend tapping off no longer carries
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water, by opening a tap that the pipe supplies.
4.15 Make your connection to the pipe. If it is on a low-lying loop there may be some water left in the pipe, so be
prepared for some flow of water. Make all joints except that to the shower heater before flushing.
4.16 It is essential to flush the system in or er to clear any ebris, bits of sol er an swarf which coul
enter an amage components within the shower heater (See Fig. 2.11). It may be best to take the shower off
the wall to do this.
4.17 Turn the water off after flushing, either at the stop cock or by using your servicing valve.
4.18 Remount the shower firmly and make the final water connection to it. Turn the water control knob fully clockwise.
Turn the water on again.
4.19 Check for leaks in all pipework, and rectify as necessary.
Fitting the Riser Rail an Accessories:
4.20 For riser rail and accessories please refer to instructions in the accessory box.
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Wiring:
4.21 Design your system as outlined in Section Three. Lay the cable in your chosen route, ensuring that you have
ample length.
4.22 Leave the connection to the consumer unit or switch-fuse until last.
4.23 Remember: when working on electrical components, ensure they are not live. If in any doubt, switch off
at your main switch at the fuseboard or consumer unit.
4.24 If you find it necessary to increase access for fitting the cable, the shower can be unplumbed at its inlet pipe and
temporarily removed from the wall.
4.25 Feed the cable through the opening in the backplate below the terminal block.
4.26 nsure that all three screws hold the shower backplate to the wall firmly.
4.27 Strip the outer insulation sheath back as required. Strip the insulation from the cores and make connections to
the LIV (L) (brown or red), N UTRAL (N) (blue or black) and ARTH terminal block. The earth wire must be
sleeved green/yellow. Make sure that the cores of the cable lie tidily and do not touch any metallic part of the shower.
They must not be under strain. There is no cable clamp.
4.28 nsure that the cable does not foul the area above the bottom removable section, where the knob gear will fit
when the front cover is fitted in place.
4.29 Make sure that all the terminal block screws are tightened very firmly. Replace the bottom section of the
backplate (the shower hose connection to the outlet will have to be temporarily removed to do this).
Fitting the front cover:
4.30 Turn the valve fully anti-clockwise (closed). Turn the knob in the cover until its marker points vertically upwards.
There is no knob-stop in the cover.
4.31 Carefully fit the cover to the backplate, ensuring that the lugs slide into their sockets. You may have to adjust
the water control knob slightly to enable its gear to mesh with that on the control valve.
4.32 Fit the cover fixing-screws. The longer one is for the lower fixing point. You may have to push the front cover
firmly against the backplate seal, to enable the screws to locate properly through the fixing lugs.
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4.33 Press the push-buttons in turn to check that their mechanism operates smoothly.
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Testing:
Once you have finished installing your shower, carry out the following tests to ensure that you have followed our
installation instructions correctly and that your shower is functioning as it should.
4.34 Secure the handset on the riser rail where it can spray safely. Press the 'Low' button.
Turn the water control knob fully clockwise.
4.35 Turn on the isolating valve (if applicable).
4.36 Slowly turn the control knob anti-clockwise. There may be gurgling noises as water fills the heater can, then
water will start to flow. Press the 'High' button.
4.37 Turn the water control knob further anti-clockwise, until the 'Power On' light illumunates. The elements are now
heating.
4.38 Adjust the water control knob to give the desired temperature. Turn clockwise for warmer, anti-clockwise for
cooler. Allow a few seconds after each adjustment for the temperature to stabilise. The high/low power selector push
buttons allows you to choose the power used by the heater. The low setting which uses less electricity can be used
in the summer to decrease the spray temperature, when the incoming water temperature is likely to be higher. A cold
shower can be obtained by leaving the isolating switch off and adjusting the flow rate using the water control knob.
Figure 4.54 External features of shower
Page 13
SECTION FIVE Fault-Fin ing
In the unlikely event of a problem, consult the trouble-shooting chart below.
For your particular symptom follow the suggested remedies in the order given.
If you are unable to remedy the problem, CONTACT YOUR INSTALLER IN THE FIRST INSTANCE. Do not attempt
any electrical or plumbing work unless you are competent to do so.
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Symptom Possible Cause Reme y
1. No Flow or hot
enough Flow
A. Water control knob is turned
fully clockwise.
A. Turn water control knob anti-clockwise.
B. Water turned off at mains or
servicing valve.
B. nsure water is fully turned on at the mains and at
servicing valve in circuit.
C. SHOW R H AT R
SUSP CT D OF B ING
FROZ N.
C. If so, DO NOT US .
(i) Switch off immediately at isolating switch.
(ii) Turn water off at servicing valve (if fitted) or at stop
cock.
(iii) Contact our Service Department.
D. There may be an outlet
blockage.
D. Disconnect handset from hose and run the shower.
(i) If water flows, then the handset is blocked with scale
or debris. Remember that disturbances to plumbing
elsewhere in your house, or in the street, can dislodge
debris which can find its way to the shower. Clean the
handset and spray rings/plate thoroughly. See
maintenance (Section 6)
(ii) If water does not flow, remove the hose from the
shower outlet.
(a) If water then flows, the hose is blocked. This could be
due to damage, severe kinking or even an obstruction.
Replace with a new hose.
(b) If the water does not flow, there is a blockage in the
plumbing to the shower, or the shower itself. Contact our
Service Department if the shower is considered to be the
problem.
2. Flow adequate but
water too cold.
A. Shower heater is on the "Low"
power setting.
A. nsure that shower is on "High" setting where
applicable.
B. Water flow too high. B. Reduce the flow by turning the water control knob
clockwise slowly.
NOTE: If the knob is turned too far clockwise, the safety
pressure switch inside the shower will turn off the heating
elements. This is apparent when the indicator light on the
shower goes out and/or the 'low flow'/'reduce temp' light
(where applicable) comes on. If this happens, turn the
knob anti-clockwise until the light(s) revert to their original
state.
3. Water too hot. A. Water flow too low. A. Increase the flow by turning the water control knob
anti-clockwise slowly.
B. Spray plate blocked with scale
and debris.
B. Clean the handset spray plate.
C. Water pressure too low. C. Switch to "low setting", if applicable.
4. Water runs from
around hose.
Turn off isolating switch and servicing valve.
A. Handset blocked. A. Clean out the spray plate as in "Maintenance",
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Pressure Relief
Device (PRD) has
operated due to
excess pressure
bulld-up.
Section 6. Call a service engineer to remove the front
cover and reset the PRD by removing the bent bracket,
pushing the black outlet boss back into the heat
exchanger and refitting a new bracket.
If the fault occurs again without the hose being damaged
or the handset blocked, contact our Service Department.
B. Hose damaged or kinked. B. Replace kinked or damaged hose and be careful not
to turn water control knob too far anti-clockwise. Reset
as in "A".
If the fault occurs again without the hose being damaged
or the handset blocked, contact our Service Department.
5. Temperature varies
whilst showering,
cyoling hot/ cold.
A. Thermal cut-out is operating,
normally making a 'click' as it
does so.
A. Increase the flow by turning the water control knob
anti-clockwise. Clean the handset and spray plate.
B. Input pressure is below the
minimum required (see section
2.1).
Flow is unstable.
B. nsure that your stop cock and servicing valve are
fully open. If they are, ask your installer or the local water
company to check that the running pressure is above the
minimum required (See para. 2.1)
6. Cold Flow. 'Power
On' indicator not lit.
Isolating switch 'On'
but its neon not lit.
A. Cartridge fuse or miniature
circuit breaker (mcb) has
operated in your fusebox (or
consumer unit) or switch fuse.
A. Switch off power and isolating switch. Renew fuse or
reset mcb. If they operate a second time, contact a
qualified electrician.
B. Residual current device (rcd)
(earth leakage circuit breaker)
has operated.
B. Follow the same procedure as above. If this has
happened with a 'split load' consumer unit on initial
installation, check that the neutral core of the shower
feed cable is connected to the 'protected' neutral bar of
the unit.
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Page 15
Where the fault cannot be corrected by either yourself or your installer, contact our service department (address and
phone number on front cover), who will try to help over the phone. If necessary, they can arrange a visit by one of our
service engineers. We find that the vast majority of problems can be solved by reference to these fitting instructions or
by discussion over the phone. In the event that our engineer is called and finds that the fault is caused by faulty
installation or usage, or lack of reasonable maintenance, a call-out charge will be made.
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SECTION SIX User Instructions
6.1 To turn on an set temperature:
(a) Turn on your isolating switch.
(b) nsure power-setting button or knob is set to 'high'.
(c) Turn water control knob anti-clockwise to allow water to flow until the 'POW R' light comes on; then the shower is
heating.
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WARMER- D CR AS FLOW - TURN KNOB CLOCKWIS
COOLER- INCR AS FLOW - TURN KNOB ANTI-CLOCKWIS
Make adjustments carefully. Give the shower a few seconds after each adjustment to stabilise, then check the
temperature by hand before stepping into the shower. The 'low' setting cuts out one heating element and so can be
used to save energy in the summer months when incoming water temperatures are higher, or simply to reduce the
spray temperature.
A cold shower can be obtained by leaving the isolating switch off.
6.2 To turn off:
(a) Turn water control knob fully clockwise.
(b) Turn off your isolating switch.
Environmental Information
This product is made from many recyclable materials, therefore at the end of its useful life it should be disposed of at
a local authority waste disposal site to ensure the environmental benefits are realised.
Han sets
It is recommen e that perio ically the han set is immerse an soake in a proprietary escalant
overnight.
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6.3 Maintenance
(a) Cleaning the Han set:
To get the best performance from your shower, the plate in the handset must be cleaned regularly, maybe as often as
once a week in hard water areas.
This is because the fine outlet holes can become restricted with scale, and this will affect the pattern of the spray and
cause the heater to perform poorly.
For details of the cleaning procedure please refer to the instructions in the accessories box.
(b) Inspection:
We recommend that in the interests of safety the shower and its electrical installation is checked by a qualified
electrician at least every two years.
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Notes
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