Heatrae Sadia UTC 99 User manual

1
Fitting Instructions and User Guide
UTC 99

2
CONTENTS
SECTION PAGE
1.0 INTRODUCTION 2
2.0 TECHNICAL SPECIFICATION 3
3.0 INSTALLATION 4
4.0 COMMISSIONING 9
5.0 EXPLANATION TO USER 9
6.0 MAINTENANCE 10
7.0 FAULT FINDING 12
8.0 SPARE PARTS 14
9.0 GUARANTEE 15
10.0 ENVIRONMENTAL INFORMATION 15
11.0 SPARES STOCKISTS 16
1.0 INTRODUCTION
Thank you for purchasing a Heatrae Sadia UTC 99 vented water heater. The
UTC 99 water heater is manufactured in the UK to the highest standards and
has been designed to meet all the latest relevant safety specications.
This UTC99 water heater must be installed, commissioned and maintained
by a competent person only. Please read and understand these instructions
prior to installing your vented water heater. Particular attention should be paid
to the section headed IMPORTANT INSTALLATION POINTS.
Following installation and commissioning, 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 concerning use
of the appliance in a safe way and understand the hazards
involved. Children shall not play with the appliance. 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.

3
Means for disconnection from the supply mains having a con-
tact seperation in all poles that provide full disconnection under
overvoltage category III conditions is required. The instructions
shall state that means for disconnection must be incorporated
in the xed wiring in accordance with the wiring rules.
2.0TECHNICAL SPECIFICATION
Electrical rating 1.5kW@240V~ or 3kW@240V~ 50Hz.
Capacity 15 litres
Weight (full) 23.4kg
Rated pressure (open outlet) 0 MPa (0 bar)
Rated pressure (max head pressure cistern fed) 0.2 MPa (2 bar)
Minimum recommended supply pressure 0.04 MPa (0.4 bar)
Supplier’s name or trade mark UTC
Supplier’s model identier 10L 15L
Storage volume V in litres 10.0 15.0
Mixed water at 40°C V40 in litres 16 25
The declared load prole XS XS
The water heating energy efciency class of the model C D
The water heating energy efciency in % 32.3 29.2
The annual electricity consumption in kWh 570 631
Daily fuel consumption Q fuel in kWh 2.75 3.10
The thermostat temperature settings of the water heater, as placed
on the market by the supplier 60°C
Specic 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 7
Table 2: Technical parameters in accordance with European Commision
regulations 814/2013 and 812/2013
The HWA Charter Statement requires that all members adhere to the
following:
`To supply t for purpose products clearly and honestly described.
`To supply products that meet, or exceed appropriate standards and
building and water regulations.
`To provide pre and post sales technical support.
`To provide clear and concise warranty details to customers.

4
3.0 INSTALLATION
Warning: Do not connect any pressure-relief device to the vent pipe of
this water heater.
Warning: This outlet acts as a vent and must only be connected to a
tting recommended by the manufacturer. It must not be connected to
a tap.
3.1 IMPORTANT INSTALLATION POINTS
3.1.1 The UTC 99 vented water heater is designed to be tted under a sink
or worktop.
3.1.2 The UTC 99 can be installed either as an Open Outlet or Cistern Fed
type unit when used with the appropriate ttings.
DO NOT connect directly to the mains water supply.
3.1.3 OPEN OUTLET INSTALLATION
When installed as an open outlet water heater, the outlet acts as
a vent and must not be connected to any form of tap or tting not
recommended by Heatrae Sadia.
Only one outlet can be served via an Open Outlet type tapset.
3.1.4 CISTERN FED INSTALLATION
FIGURE 01: DIMENSIONS
656
252
59
FIXING CENTRES OF
MOUNTING BRACKET
516
190
613
100
267

5
When installed as a Cistern Fed water heater, the cold water supply
must be from a feed cistern complying with Water Byelaw 30.
A vent pipe must be connected to the outlet of the heater. The vent
pipe must rise continuously and be arranged to discharge into the
cold water feed cistern.
The vent pipe must have a minimum bore of 19mm.
3.1.5 National Wiring rules may contain restrictions concerning the installation
of these units in bathrooms.
3.1.6 The installation must be carried out in accordance with the relevant
requirements of:
• The appropriate Building Regulations either The Building
Regulations, The Building Regulations (Scotland) or Building
Regulations (Northern Ireland).
• The Water Fittings Regulations or Water Byelaws in Scotland.
LOCATION
3.1.7 The unit should be vertically wall mounted using the wall bracket
provided. Alternatively, it can be oor mounted on its base. The water
connections must always be to the top of the unit.
3.1.8 Enough space should be left at the top above the unit to allow for pipe
connections. Refer to Fig. 01 to determine a suitable position for the
heater.
3.1.9 Ensure that the wall can support the full weight of the unit (see Technical
Specication) and that there are no hidden services (gas, water or
electricity) below the surface of the wall.
3.1.10 The unit should be xed to the wall using No. 12 screws into suitable
wall plugs.
3.2 PLUMBING
3.2.1 DO NOT install where the unit may freeze.
3.2.2 Refer to the section IMPORTANT INSTALLATION POINTS to determine
which valves and accessories are required.
3.2.3 The water connections are 15mm diameter copper tube suitable for
compression ttings. Do not use solder joints as this will damage the
heater.
3.2.4 The inlet is marked BLUE and the outlet is marked RED. It is
recommended to t a WRAS listed isolating valve on the cold water
inlet to simplify servicing.
OPEN OUTLET INSTALLATION
3.2.5 When installed as an open outlet water heater, the outlet acts as
a vent and must not be connected to any form of tap or tting not

6
recommended by Heatrae Sadia.
3.2.6 Only one outlet can be served via an Open Outlet type tapset. A range of
open outlet (vented) taps are available from Heatrae Sadia. All tapsets
are of high quality chromium plated brass construction.
PACK J 95 970 295 Two hole mixer set
PACK K 95 970 296 Monobloc mixer tap
PACK M 95 970 298 Pair of pillar taps with ¼ turn elbow levers
PACK P 95 970 299 Pair of basin taps with ¼ turn elbow levers
PACK Q 95 970 310 Two hole mixer set with ¼ turn elbow levers
PACK R 95 970 311 Pair of pillar taps
PACK S 95 970 312 Basin hot tap
PACK T 95 970 313 Basin cold tap (matches Pack S)3.2.7
The cold water supply can either be taken from the cold water mains
or from a cold water feed cistern complying with Water Byelaw 30 with
a minimum recommended pressure of 0.04 MPa (0.4 bar).
3.2.8 The inlet/outlet connections of the heater must be connected to the
open outlet tapset in accordance with the tting instructions supplied
with the tapset.
The inlet must not be connected directly to the cold water mains
supply.
3.2.9 In an open outlet installation, it is normal for the tap to drip during
heating. This is due to expansion of the water as it is heated within the
unit and does not indicate a fault. DO NOT attempt to stop this dripping
by over-tightening the tap as damage to the sealing washers or internal
operating mechanism will occur.
UTC99
HEATER
FIGURE 02: TYPICAL OPEN OUTLET INSTALLATION

7
CISTERN FED INSTALLATION
3.2.10 This method of installation must be used if the outlet is to be
connected to one or more conventional taps. It is not
recommended for supplying a shower. Individual site
demands should be considered when choosing the number of
outlets to be served.
3.2.11 A vent pipe must be connected to the outlet of the heater.
The vent pipe must rise continuously and be arranged to
discharge into the cold water feed cistern.
The vent pipe must have a minimum bore of 19mm.
DO NOT connect any pressure relief device to the vent pipe of
this water heater.
3.2.12 The cold water supply must be from a cold water feed cistern
complying with Water Byelaw 30. The maximum head distance
must not exceed 20 metres.
3.2.13 It is recommended to t a WRAS listed isolating valve on the cold
water inlet to simplify servicing.
3.2.14 The inlet must not be connected directly to the cold water
mains supply.
FIGURE 03: TYPICAL CISTERN FED INSTALLATION
UTC99
HEATER

8
3.3 ELECTRICAL REQUIREMENTS
WARNING: This appliance must be earthed. It is suitable for a.c. supply only.
Disconnect the electrical supply before removing the terminal cover. Electrical
installation must be carried out by a competent electrician and be in accordance
with the latest I.E.E. wiring regulations.
Ensure the electrical supply is switched off before making any connections
to the water heater.
3.3.1 The unit is supplied tted with a 0.75m 3 core 1.5mm2 exible cable. The
electricity supply should be fused 13 Amp for 3kW models and 10A for
1.5kW models and be via a double pole isolating switch with a contact
separation of at least 3mm in both poles. Refer to Fig. 04 below.
3.3.2 The wires are colour coded as follows:
Green and Yellow EARTH
Brown LIVE (L)
Blue NEUTRAL (N)
FIGURE 04: WIRING DIAGRAM

9
4.0 COMMISSIONING
4.1 Do not switch on the electrical supply until the unit has been lled with
water and checked for leaks.
4.2 Check that all installation and electrical requirements have been met.
4.3 Check that all water and electrical connections are tight.
4.4 Open a hot water tap and turn on cold water supply to the heater.
4.5 Allow unit to ll and leave hot tap running for a short while to purge any
air and ush out the pipework. Close the hot tap and check the system
for leaks.
4.6 Switch on the electrical supply. The indicator light will illuminate during
heating. When the set temperature is reached the indicator light will go
out.
5.0 EXPLANATION TO USER
Following Installation and Commissioning of the water heater the operation
should be fully explained to the user:
5.1 The UTC99 vented water heater stores water at the temperature set
on the adjustable thermostat. This can be set to provide temperatures
in the range of 10 to 70°C. To avoid any risk of freezing when the
heater is not in use for long periods during the winter months, do not
switch off the electrical supply and set the thermostat to its minimum
position. N.b. this will not protect other system pipework.
5.2 The set temperature can be adjusted by rotating the knob located in
the terminal cover. It is possible to lock the thermostat knob in either
the ‘mid-range’ or a ‘hot’ position by following the procedures below.
Always switch off the electrical supply before removing the terminal
cover.
5.3 Setting the ‘mid-range’ position:
Rotate the thermostat knob to the mid position. Remove the terminal
cover using a large at-bladed screwdriver to depress the three snap
lugs located in the three top rectangular depressions. Holding the
thermostat knob in position, turn the terminal cover over and remove
the backing disc from the underside of the cover. Turn the backing disc
over and ret to the knob, ensuring the notch locates with the boss on
the underside of the cover. Ret the terminal cover and the thermostat
will now be locked in the ‘mid-range’ position.

10
5.4 Setting the ‘hot’ position:
Rotate the thermostat knob to mid way through the hot graduated
range (red graphic). Follow the procedure in 5.3, however in this case,
the knob should be held in the ‘hot’ position previously set. When the
terminal cover has been re-tted, the thermostat will be locked in the
‘hot’ position.
5.5 SYSTEM MALFUNCTION
1. Explain how to isolate electrical and water supplies incase of a fault.
2. Explain that a qualied plumber and / or electrician should be contacted
if there is a fault.
3. Explain how to identify / check basic faults.
5.6 SYSTEM MAINTENANCE
Explain the necessity to carry out regular maintenance of the water heater to
ensure it’s continued safe and efcient operation.
5.7 LITERATURE
Hand over the Installation and user instructions.
6.0 MAINTENANCE
WARNING: Disconnect from all electrical supplies before beginning any work
on the water heater. Water contained in the water heater may be very hot!
To ensure the continued safe and efcient operation of the water heater it
should be regularly maintained.
In hard water areas the water heater will require periodic descaling.
Maintenance and servicing should be carried out by a competent person
and any replacement parts used should be authorized Heatrae Sadia spare
parts.
6.1 RE SETTING THE THERMAL CUTOUT
6.1.1 Switch off and disconnect the electrical supply, turn off the water supply
to the unit and remove the terminal cover.
6.1.2 Press the thermal cut out button (see Figure 05).
NOTE: If the thermal cut out continues to operate, check the operation of the
thermostat and the element plate assembly.

11
6.2 DRAINING THE WATER HEATER
6.2.1 Switch off and disconnect the electrical supply. Turn off the water supply
to the unit.
6.2.2 Open a hot tap to relieve any system pressure. Disconnect the plumbing
connections to the unit and remove (note full weights of units). Empty
unit through the outlet connection.
6.3 DESCALING
6.3.1 Switch off and disconnect the electrical supply, turn off the water supply
to the unit and drain as above.
6.3.2 Remove the terminal cover as previously described. Remove the plastic
disc from the thermostat spindle and the insulating pad from the terminal
housing.
6.3.3 Disconnect the electrical terminations to the thermostat. Disconnect
earth links to the earthing stud.
6.3.4 Remove the element plate assembly by unscrewing the ve securing
screws, tapped jacking points are provided. Remove any loose scale
from the container. Carefully clean off any scale from the element and
thermostat pocket. DO NOT clean scale from interior container walls.
6.3.5 Re-t the element plate assembly using a new sealing gasket. Note
the correct orientation of the element plate by reference to Figure 05.
Rewire the unit with reference to the Figure 04 .
6.3.6 Ret the cover.
6.3.7 Re-commission the unit following the INSTALLATION and
COMMISSIONING instructions.
FIGURE 05: COMPONENT IDENTIFICATION

12
7.0 FAULT FINDING
WARNING: Disconnect from all electrical supplies before beginning any work
on the water heater. Water contained in the water heater may be very hot!
The water heater should give trouble free operation, however should a
problem occur, the table overleaf should enable most faults to be identied
with ease.
Fault Finding should be carried out by a competent person and any
replacement parts used should be authorised Heatrae Sadia spare parts.
6.3.8 SUPPLY CORD
If the supply cord is damaged the water heater should be switched off until
the supply cord can be replaced by a competent electrician or a Heateam
Engineer in order to avoid a hazard.

13
9
NOTE: Use only Heatrae Sadia approved spare parts. Replacement of
any parts with components not recommended by Heatrae Sadia will
invalidate the guarantee and may render the installation dangerous.
ACTIONPOSSIBLE CAUSESFAULT
1. Check electrical supply1. Electrical supply faultWater not heating
h / h l
necessary replace
thermostat operation. If
operated reset and check
2. Check cut-out, if2. Thermal cut-out tripped
necessary
operation, replace if
3. Check thermostat3. Thermostat fault
replace.
resistance. If faulty
continuity and insulation
4. Check element for circuit4. Element fault
supply is on.
1. Check mains water
turned on
1. Cold water supply not
N
o water ow - Genera
l
2. Check for obstructions.
supply
2. Blockage in cold water
connections to tapset
1. Check water
correctly installed
1. Open Outlet tapset not
Outlet installations
N
o water ow - Open
2. Check for obstructions.2. Blockage in tapset
1. Check for obstructions.1. Blockage in tapset
Fed installations
N
o water ow - Cistern
oat valve.
Check operation of cistern
cistern tank is turned on.
2. Check water supply to2. Cistern tank empty
oat valve.
Check operation of cistern
equal to outlet ow rate.
and that inlet ow rate is
cistern tank is turned on
1. Check water supply to
as outlet ow rate
1. Cistern not lling as fast
installations
reduces - Cistern Fed
Water ow gradually
necessary.
obstructions, clear as
2. Check vent pipe for2. Vent pipe blockage

14
8.0 SPARE PARTS
WARNING: Disconnect from all electrical supplies before beginning any work
on the water heater. Water contained in the water heater may be very hot!
To ensure the continued safe and efcient operation of the water heater it
should be regularly maintained.
Maintenance and servicing should be carried out by a competent person
and any replacement parts used should be authorized Heatrae Sadia spare
parts.
DESCRIPTION CODE No.
Element plate assembly - 3kW 95 606 922
Element plate assembly - 1.5kW 95 606 927
Combined thermostat/thermal cut-out 95 980 041
Indicator light 95 607 992
Element plate gasket 95 611 811
Top cover moulding 95 614 246
Terminal cover c/w thermostat knob 95 614 182

15
9.0 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 Instructions 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 tted correctly.
2. Any valves and controls are of the Heatrae Sadia recommended type
and specication.
3. The unit has not been modied 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.
The policy of Heatrae Sadia is one of continuous product development and,
as such, we reserve the right to change specications without notice.
10.0 ENVIRONMENTAL INFORMATION
Heatrae Sadia products are manufactured from many recyclable materials.
At the end of their useful life they should be disposed of at a Local Authority
Recycling Centre in order to realise the full environmental benets. Insulation
is by means of CFC-free polyurethane foam.
This water heater does not contain substances harmful to health; it does not
contain any asbestos.

16
11.0 SPARES STOCKISTS
For the fast and efcient supply of spares, please contact the stockists listed
below:
Electric Water Heating Co.
2 Horsecroft Place, Pinnacles
Harlow, Essex, CM19 5BT
Tel: [phone]
E-Mail: [email protected]
SPD
Special Product Division
Units 9 & 10 Hexagon Business Centre
Springeld Road, Hayes, Middlesex, UB40 0TY
Tel: [phone]
Parts Centre
Tel: [phone]
www.partscentre.co.uk
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
Almonsbury, Bristol, BS32 4TF
Tel: [phone]
Alternatively contact your local supplying merchant
or wholesale branch or use our online stockist nder
at www.interpartspares.co.uk
Heatrae Sadia
Hurricane Way Norwich NR6 6EA
www.heatraesadia.com
36005721_issue_03
AFTER SALES SERVICE
t| 0344 8711535
e| customer[email protected]