Santon Aquarius AU7/3 Guide

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Installation and User Instructions
Aquarius Undersink Vented Water Heaters
Models: AU7/3, AU7/1, AU10/3, AU10/1.
Please read and understand these instructions before starting work.
Please leave this leaet with the user following installation
PACK CONTENTS
Heater, Fixing screws and plugs,
Installation and User Instructions, and
Guarantee card.
WARNING
This water heater must only be installed by
competent persons
36005806 Issue 08

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Thankyou for purchasing a Santon Aquarius water heater. The Aquarius water heater
is manufactured in the UK to the highest standards and has been designed to meet
all the latest relevant safety specifications.
This Aquarius water heater must be installed and maintained by a competent
person only. Please read and understand these instructions prior to installing your
Aquarius water heater. Particular attention should be paid to section three headed
INSTALLATION. Following installation the operation of the heater should be explained
to the user and these instructions left with them for future reference.
This appliance can be used by children aged from 8 years
and above and persons with reduced physical sensory or
mental capabilities or lack of experience and knowledge if
they have been given supervision or instruction concern-
ing use of the appliance in a safe way and understand the
hazards involved. Children shall not play with the appli-
ance. Cleaning and user maintenance shall not be made
by children without supervision.
Children must be supervised to ensure they do not play
with the appliance.
Electrical rating .....................................................1.17/1.2kW@230/240V~
2.75/3.0kW@230/240V~
Capacities .............................................................7 & 10 litres
Weight ................................................................. 7 litre - 9.3kg, 10 litre - 12.5kg
Rated Pressure....................................................... 0Mpa (0bar)
Minimum recommended supply pressure ..............Mains fed or cistern fed
(3m head required)
Temperature range ............................................... 10 to 70°C
1.0 INTRODUCTION
2.0 TECHNICAL SPECIFICATION

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240 240
57
120
100
X
Y
FIGURE 01: DIMENSIONS
2 KEYHOLE
FIXING SLOTS
FOR UNDERSINK
FIXING
120
3rd FIXING
HOLE
DIMENSION X Y
7 LITRE 356 349
10 LITRE 442 435
Table: Technical parameters in accordance with European Commision
regulations 814/2013 and 812/2013
Name Aquarius
Model AU7/3 AU7/1 A10U/3 A10U/1
Volume Litres 7 7 10 10
V40 9 9 11 11
Load Profile XXS XXS XXS XXS
Energy Efficiency Class C C C C
Energy Efficiency % 31.4 31.4 31.9 31.9
Annual electricity consumption kWh 587 587 578 578
Daily fuel consumption kWh 2.850 2.850 2.790 2.790
Thermostat setting 60°C
Specific precautions that shall be taken when
the water heater is assembled, installed or
maintained and disposed of at end of life
See Section 2 to 5
3.1 LOCATION
3.1.1 Inlet must always be on the right.
3.1.2 The outlet of this water heater acts as a vent and must not be blocked or
restricted in any way.
3.1.3 Only Santon open outlet accessories must be used with this water heater. A
full range is available, please consult your distributor or Santon for further
information.
3.1.4 The installation must be carried out in accordance with the relevant
requirements of the appropriate Building Regulations, either:
3.0 INSTALLATION

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• The Building Regulations
• The Building Regulations (Scotland) or Building Regulations (Northern
Ireland)
• The Water Fittings Regulations or water Byelaws in Scotland
3.1.5 Select a suitable site but check that:
a) There is enough clearance above the heater to allow for pipe connections
and removal of the element plate.
b) There are no hidden services where the wall is to be drilled.
3.1.6 Mark the position of the fixing holes (as shown in Figure 01).
3.1.7 Drill and plug the hole positions.
3.1.8 Screw in the lower two screws leaving heads 3mm from the wall.
3.1.9 Hang the heater on the two screws.
3.1.10 Screw in top screw to secure heater.
3.2 PLUMBING
3.2.1 This water heater is designed for cistern-fed application in conjunction with
a separate cistern and vent pipe (see Figure 02).
3.2.2 Alternatively the heater can be connected directly to the water mains
provided that a Santon ‘vented tap’ is used (see Figure 03).
3.2.3 Both inlet and outlet pipes are clearly labelled. The pipes are 15mm tube
and are suitable for compression fittings.
3.2.4 It is recommended that a WRAS listed isolating valve (not supplied) be fitted
in the water supply pipe to the heater to allow for servicing.
3.3 ELECTRICAL
3.3.1 Warning: this appliance must be earthed. It is suitable for a.c. supply only.
Electrical installation must be carried out by a competent electrician and be
in accordance with the latest I.E.E. regulations.
3.3.2 Nominal cross-section of supply cable must be at least 1.5mm2. A double
pole isolating switch with a contact separation of at least 3mm in each pole
must be incorporated in the supply.
3.3.3 Remove the terminal cover using a large flat bladed screwdriver to relieve
the snaps located towards the front at either side of the cover. Gripping the
cover at the front, pull upwards.
3.3.4 Strip the outer sheath and insulation on the cable to the required lengths,
push the cable through the grommet provided, this will be held in the cable
grip when the connections are made (see Figure 04).
3.3.5 Pass the cable underneath the cable grip and through the top moulding.
3.3.6 Make the connections to the terminal block as follows:
• Live (brown or red wire) to terminal marked “L”
• Neutral (blue or black wire) to terminal marked “N”
• Earth (green or green/yellow wire) to terminal marked .
3.3.7 Secure the cable in the cable grip by tightening the two screws.
3.3.8 Set the adjustable thermostat by rotating the control to the required
temperature. It is recommended that it is set to lowest acceptable temperature
to meet user requirements. This will minimise the risk of scalding and reduce
the level of scaling in hard water areas.
3.3.9 Replace terminal cover by locating the hinge at the rear. Slide the snaps into
place. Apply pressure to the front of the cover, pushing back and down until
it snaps securely in place.

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HOTCOLD
MAINS
STOP COCK
SI N K
CI STERN
FIGURE 02:
CISTERN FED APPLICATION
FIGURE 03:
OPEN OUTLET APPLICATION
(USING 'VENTED TAP')
MAINS
HOTCOLD
STOP COCK
VEN T ED H OTTAP
FIGURE 05: WIRING DIAGRAM.
INLET
OUTLET CA BLE CLA M P
TERMINAL BLOCK
EA RTH PO ST
EL EM EN T
THERMOSTAT CONTROL
FIGURE 04: INTERNAL LAYOUT
THERMAL CUT-OUT
CAPILLARY STAT
TO ELEMENT
GREEN&YELLOW
BROWN/RED
BLUE/BLACK
EARTH
LIVE (RED)
NEUTRAL (BLACK)
THERMAL FUSE
THERMOSTAT
TERMINAL BLOCK
THERMOSTAT BULB

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Your Aquarius water heater should give you trouble free operation, however,
should a problem occur the table below should enable most faults to be identified
with ease.
Fault finding should only be carried out by a competent person and any replacement
part should be authorised Santon spare parts.
4.0 COMMISSIONING
4.1 DO NOT SWITCH ON HEATER UNTIL IT IS FILLED WITH WATER
Fill with water by opening tap and leaving open until a full bore of water
flows from the outlet.
4.2 Switch on water heater at double pole isolating switch. The heater will heat
water to the temperature set on the thermostat.
4.3 Check water is heating correctly.
• 7 litre 1.2kW - after 10 mins water temperature will increase by 20°C
• 7 litre 3kW - after 10 mins water temperature will increase by 60°C
• 10 litre 1.2kW - after 10 mins water temperature will increase by 15°C
• 10 litre 3kW - after 10 mins water temperature will increase by 40°C
4.4 Pass instruction leaflet to user and draw their attention to the following
two statements:
• DO NOT USE HEATER IF THE WATER IS THOUGHT TO BE FROZEN
Switch off immediately at the isolating switch if the water does not flow
freely.
Any damage resulting from freezing will not be covered by the guarantee.
• DURING HEATING THE OUTLET WILL DRIP
This is due to the expansion of water inside the heater and is normal for
heaters of this type. It does not indicate that the valve is faulty and over
tightening of the valve can result in damage.
5.0 FAULT FINDING
SYMPTOM PROBABLE CAUSE ACTION
No hot water 1. Check power Check and replace as necessary.
2. Faulty cut out
3. Faulty thermostat
4. Faulty element
Water too hot
/cold
1. Thermostat set to wrong
temperature
Adjust thermostat.
2. Faulty thermostat Switch off, check and replace.
No water flow 1. Frozen Switch off electrical power and al-
low to thaw at room temperature.
Do not switch on again until full
water flow restored and full checks
made for leaks and electrical safety.
2. No mains supply Check mains.
Continuous water flow Faulty valve/tap Check and replace.

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6.0 SPARE PARTS
In the unlikely event of your Water Heater developing a fault, the following spare
parts are available:
Element plate assembly 7 litre 1.2kW 95 606 902
Element plate assembly 7 litre 3kW 95 606 903
Element plate assembly 10 litre 1.2kW 95 606 904
Element plate assembly 10 litre 3kW 95 606 905
Element plate assembly gasket 95 611 021
Capillary thermostat 95 612 051
Over temperature cut-out 95 612 050
Top cover moulding 95 614 272
Terminal cover 95 614 273
Adaptor long 95 607 954
Adaptor o-ring 95 607 955
Fixing fork 95 607 956
7.0 GUARANTEE
This product is guaranteed against faulty materials and manufacture for a period of
2 years from the date of purchase provided that:
1. The unit has been installed in accordance with the Installation and User Instruc-
tions and all relevant Codes of Practice and Regulations in force at the time of
Installation, and that all necessary controls and safety valves have been fitted
correctly.
2. Any valves and controls are of the Santon recommended type and specification.
3. The unit has not been modified or tampered with in any way, and has been
regularly maintained as detailed in the Installation and User Instructions.
4. The unit has been used only for heating potable water.
The unit is not guaranteed against damage by frost, and the inner container with
integral immersion heater is not guaranteed against excessive scale build-up.
This Guarantee in no way affects the statutory rights of the consumer.
Santon’s policy is one of continuous product development and, as such, we re-
serve the right to change specifications without notice.
8.0 ENVIRONMENTAL INFORMATION
This product is manufactured from many recyclable materials.
At the end of its useful life it should be disposed of at a Local Authority Recycling
Centre in order to realise the full environmental benefits. Insulation is by means of
CFC-free polyurethane foam.
This product does not contain any substances harmful to health; it does not
contain any asbestos.

8
Hurricane Way,
Norwich
Norfolk, NR6 6EA.
www.santon.co.uk
Service Tel: [phone]
Service E-mail:
customer[email protected]
9.0 SPARES STOCKISTS
Electric Water Heating Co.
2 Horsecroft Place, Pinnacles,
Harlow, Essex CM19 5BT
E-mail: [email protected]
SPD
Units 9 & 10 Hexagon Business Centre
Springfield Road, Hayes
Middlesex UB4 0TY
Tel : [phone]
Newey & Eyre
Unit 3 - 5 Wassage Way
Hampton Lovett Ind. Estate,
Droitwich, Worcestershire WR9 0NX
Tel : [phone]
Fax: [phone]
UK Spares Ltd.
Unit 1155 Aztec West,
Almondsbury,
Bristol BS32 4TF
Tel: [phone]
Alternatively, contact your local supplying merchant, wholesale branch or use our online stockist finder
at www.interpartspares.co.uk