STOVES 720GRa, 900GRa, 700GR User & Installation Instructions Manual

08 24482 04 © 6.2003

Stoney Lane, Prescot, Merseyside, L35 2XW

720GRa

Rotostar

Gas Double Oven & Grill

For Natural Gas & LP Gas Models

User & Installation Instructions

Premier Collection

In case of difficulty within the UK and Northern Ireland, please call

STOVES Customer Care Centre Helpline on

0151 432 7838

When you dial this number you will hear a recorded message and be given a

number of options. This indicates that your call has been accepted and is being

held in a queue. Calls are answered in strict rotation as our Customer Care

Representatives become available.

Opening Hours for Customer Care Centre

Monday to Friday 8am - 8pm
Saturday 8.30am - 6pm
Sunday 10am - 4pm

Enter appliance numbers here for future reference:

Please ensure you have the above details (Model No and Serial No) to hand
when calling Stoves Customer Care. They are essential to booking your call.

Outside the UK and Northern Ireland, refer to your local supplier.

Model No

Serial No

33

STOVES CUSTOMER CARE

32

TECHNICAL DATA

Data Badge

Abbreviated data badge located on
front frame. Full data badge located
on rear panel.

Gas Category

This appliance is factory set for use on
either Natural Gas only or LP Gas
only. This is clearly marked on the
data badge.

Natural Gas - I

2H (G20 @ 20mbar)

LP Gas - I3+ (G30/31 @ 28-30/37mbar)

Pressure Test Point

Manifold inlet block

Pressure Setting

Natural Gas - G20 @ 20 mbar
LPG - Butane G30 @ 28 - 30 mbar
LPG - Propane G31 @ 37 mbar

Ignition

Automatic re-ignition system

Oven / Grill Light(s)

4 x 25W (2 in each oven)

Electrical supply

220 - 240V ~ 50Hz, 230W

Grill

Burner: Surface combustion behind
ceramic glass. Spark gap: 3 - 4mm.

Top Oven

Burner: Rotary surface combustion.
Spark gap: 3 - 4mm.

Main Oven

Burner: Rotary surface combustion.

Appliance class

Class 3, Built-In Oven & Grill Unit

Countries of Destination

GB - Great Britain, IE - Ireland

Gas Burner Nominal Rate Qn Injector size Grammes per hour

G30 Butane G31 Propane

Natural Grill 3.2kW Amal Size 230 - ­Gas Top Oven 1.8kW Amal Size 130 - ­G20 Main Oven 2.4kW Amal Size 180 - -

Total heat input ∑Qn 5.6kW - - -

LP Gas Grill 3.2kW Amal Size 95 233 g/h 229 g/h
G30/G31 Top Oven 1.8kW Amal Size 55 131 g/h 129 g/h

Main Oven 2.4kW Amal Size 75 174 g/h 172 g/h
Total heat input ∑Qn 5.6kW - 407 g/h 400 g/h

1

User’s Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 17

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Be Safe - Not Sorry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Using the Maxigrill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Using the Top Oven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Using the Main Oven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Using the Ovens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Programmer / Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Micro-computer Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 - 28

Fault finding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 - 31

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Stoves Customer Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Please keep this handbook for future servicing, or for anyone else

who may use the appliance.

If you smell gas:

Do not

try to light any appliance. Do not touch any electrical switch.

Call

the Gas Emergency Helpline at TRANSCO on:

0800 111999

In the Republic of Ireland, call the Bord Gaìs emergency line on

1850 205050 or contact your local gas supplier.

CONTENTS

Thank you for choosing a
British built appliance by Stoves

We hope the following information
will help you to familiarise yourself
with the features of the appliance, and
to use it successfully and safely.

Our policy is one of constant
development and improvement. Strict
accuracy of illustrations and specifications
is not guaranteed. Modification to
design and materials may be necessary
subsequent to publication.

This appliance must be installed in
accordance with the regulations in
force, and only in a well ventilated
space. Read the instructions before
using or installing this appliance.

The 720GRa is designed to fit into a
standard 600mm wide housing unit
with a minimum internal height of
710mm and clear depth of 550mm.

The User’s Section in this handbook
covers the operation of the ovens and
grill, but to help you make the most of
your Stoves 720GRa, we have pro­duced the accompanying Cooking
Guide, which gives more details of its
features and benefits.

Your first year guarantee

To fulfil the conditions of your guarantee,
this appliance must be correctly
installed and operated, in accordance
with these instructions, and only be
used for normal domestic purposes.

Please note that the guarantee, and
Service availability, only apply to the
UK and Republic of Ireland.

Before using the appliance for
the first time, remove any protective
polythene film and wash the oven
shelves and furniture in hot soapy water
to remove their protective covering of
oil. Even so, when you first switch on
the oven or grill, you may notice a
smell or some smoke.

To replace an oven light bulb

Switch off the electricity supply to the
appliance at the socket, to avoid the
risk of electric shock.

Wait until the oven is cool then remove
the oven shelves.

The lens cover on the light can be
removed by grasping the lens cover
and pulling away from the side of the
oven. Unscrew the bulb.

Please note that the oven light bulbs
are not covered by guarantee.
Replacement bulbs can be bought
from most hardware stores.

2

INTRODUCTION

31

Grill faults are generally similar to
those listed for the oven.

If the cooling fan starts and runs, the
electrodes should spark and the
solenoid valves can be heard to open.
If the spark electrodes are correctly
positioned and no spark occurs, there
may be an air detector pressure switch
fault, one faulty solenoid valve or no
gas supply.

Symptom Fault

Oven fan does not start Faulty fan or connections.
burner lights, oven lamp lights

Oven fan does not start Component failure on main board.
lamps do not light

Cooling fan fails to start 1. Faulty fan.
‘ON’ LED fails to light 2. Faulty programmer.
cooling fan fails to start 3. Faulty component on either board.

4. Faulty mains transformer.

5. Miss set or faulty potentiometer on control
board.

6. Faulty transformer or mains supply.

7. Faulty microswitch on control board.

Temperature exceeds set level Damaged or disconnected thermistor probe.

Oven goes to HLO after four / five minutes.

Appliance will not work, green & red Faulty micro-computer.
lamps for both ovens flash together

FAULT FINDING

30

Typical faults assuming all wiring is correct

(ensure programmer is set to manual):

Symptom Fault

HLO on switching On mains Component fault on main PCB, incorrect wiring

HLO on turning On oven/grill Fault on control board / potentiometer,

incorrect wiring, open circuit solenoid.

Oven start up, burner lights and Short circuit thermistor assembly.
immediately goes out, ready light on Note: at room temperature, thermistor

resistance is approximately 100 kΩ.

Oven fails to ignite (check that 1. Incorrectly positioned or open circuit spark
electrode sparks correctly) electrode (note both grill and oven

electrodes must be connected).

2. Faulty solenoid valve.

3. Gas not at appliance.

4. Blocked injector jet.

Oven goes out before set 1. Incorrectly adjusted spark electrode (low
temperature is reached flame current).

2. Low gas pressure.

3. Incorrectly positioned potentiometer or
indicator disc.

4. If oven goes out after approximately 4
mins, this is due to a disconnected or open
circuit thermistor.

Oven fails to re-ignite after set 1. Incorrectly set spark electrode.
temperature is reached 2. Low Gas Pressure.

Oven fan fails to start 1. Open circuit in programmer.
burner does not light 2. Component failure on main board

3. Component failure at control board.

FAULT FINDING

Gas & Electrical connection

Please refer to installation instructions
for the Gas & Electrical Safety Regulations
and the Ventilation Requirements.

In your own interest, and that of safety,
it is the law that all gas appliances be
installed by competent persons, who
will ensure that the installation is in
accordance with “The Gas Safety
(Installation & Use) Regulations 1994”,
& the “The Gas Safety (Installation &
Use) (Amendment) Regulations 1996”.
Failure to comply with these
Regulations is a criminal offence.

Corgi registered installers undertake to
work to satisfactory standards.

Disconnection of gas and electric
appliances should always be carried
out by competent persons.

Warning: This appliance must be
earthed.

In the event of a power cut

1. Switch off the electricity to the
appliance at the socket.

2. When the power returns, see the
‘Programmer / Clock’ section to
‘Set the time of day’.

Note: operating the control knobs

You may find that the control knobs on your
new appliance operate or perform differentl y
to those you are used to.
The controls are part of the unique electronic
operating system of the appliance and are
designed to be extremely responsive and
easy to turn.

Condensation

When hot and cold air meet,
condensation forms. The outer door is
air cooled and the inner door gets hot,
so some condensation might form; this
is normal and will disappear within
10 - 15 minutes.

During operation, a metallic click may
be heard occasionally. This is caused
by the gas valve operating and is
quite normal.

Ventilation

The use of a gas cooking appliance
results in the production of heat and
moisture in the room in which it is
installed. Ensure that the kitchen is well
ventilated; keep natural ventilation holes
open or install a mechanical ventilation
device (mechanical extractor hood).

Prolonged intensive use of the
appliance may call for additional
ventilation, for example opening of a
window, or more effective ventilation,
for example increasing the level of
mechanical ventilation where present.
This appliance is not connected to a
products evacuation device.

It should be installed and connected in
accordance with current installation
regulations. Particular attention should
be given to the relevant requirements
regarding ventilation.

3

INTRODUCTION

Glass door panels

To meet the relevant Standards of
Domestic cooking appliances, all the
glass panels on this appliance are
toughened to meet the fragmentation
requirements of BS3193. This ensures
that, in the unlikely event that a panel
breaks, it does so into small fragments
to minimise the risk of injury.

Please take care when handling, using
or cleaning all glass panels as any
damage to the surfaces or edges may
result in the glass breaking without
warning or apparent cause at a later
date. Should any glass panel be
damaged, Stoves strongly recommend
that it is replaced immediately.

Ready lights

The ready lights are located to the left
of the control knob windows.

When the appliance is switched on,
the red lights will come on.

A steady green light indicates when
the selected oven or grill has reached
a suitable temperature.

If the lights are flashing, refer to
“Micro-computer Operation” section.

The Gas Consumer Council (GCC) is
an independent organisation which
protects the interests of gas users. If
you need advice, you will find the
telephone number is your local
telephone directory under Gas.

Cooling fan

When you switch on the ovens or grill
you will hear the cooling fan start.
This fan provides air for the burners
and keeps the exterior of the
appliance cool during cooking, the
appliance will not operate unless the
fan is operating.

If the fan malfunctions the appliance
will require servicing. Switch off the
appliance electricity supply. The fan
may continue to operate to cool the
appliance for a few minutes after the
last control has been switched off.

Warning: Do not use the oven(s) if
the fan is not working.

Environmental Protection

We are committed to protecting the
environment and operate an
Environmental Management System
which complies with BS EN ISO
14001:1996.

Disposal of packaging

• All our packaging materials are
recyclable and environmentally
friendly.

• Please help us to protect our
environment by disposing of all
packaging in an environmentally
friendly manner.

• Please contact your local authority
for the nearest recycling centre.

Caution: Packaging materials can
pose a risk of suffocation - keep away
from children.

4

INTRODUCTION

Method of operation

When the control knob is rotated from
the ‘OFF’ position, a microswitch
closes and allows the gas control
solenoids to be energised; the same
movement of the control rotates an
electrical potentiometer and lights a
red LED.

The micro-computer on the main
control board uses the resistance set
at the potentiometer to determine the
user’s requirements - ie; oven or grill
and oven temperature asked for.

The oven temperature is sensed by a
thermistor at the rear of the oven - the
computer compares the electrical
resistance of this with that set on the
potentiometer, and controls burner
accordingly.

Other inputs to the micro-computer are
signalled by door switches, the timer /
programmer unit and an air flow
checking pressure switch.

The oven fan, cooling fan, and lamps
are operated at mains voltage, the
solenoid valves, and controls at 24V.
The igniter high voltage coils are
mounted on the main PCB.

Upon applying mains voltage, the
micro-computer makes a series of checks
of the air flow and flame detector
before allowing start up.

Electrical faults

These may be either component failure
or wiring / connector faults. Should
any disconnections be made, it is
important that they be re-connected
exactly as before or the computer will
lock out; poor connections are the most
common fault. It is most important that
earth wires (green) are all connected
and earth screws tight.

There are two forms of micro­computer lockout

Hard lockout (

HLO); for instance, air

flow failure. This is indicated by the
green and red lamps of both ovens
flashing alternately left / right. The
cooling fan may continue to run for a
while. Hard lockout can only be
cancelled by turning off the mains
electricity supply.

Soft lockout (SLO), for instance, re­ignition failure, will cause the green
and red lamps of the affected cavity to
flash - the cooling fan may run on, the
oven fan will not run on. To cancel
soft lockout, turn off the control knob.

Should the oven temperature not
reach 40˚C within approximately four
minutes, the computer will consider
that a fault has occurred and go to
lockout.

29

FAULT FINDING

Step 7: Commissioning

Burner aeration

All burners have fixed aeration and no
adjustment is possible.

Pressure setting

Natural Gas - G20 @ 20 mbar
LPG - Butane G30 @ 28 - 30 mbar
LPG - Propane G31 @ 37 mbar

The pressure test point is on the
manifold inlet block.

After setting gas pressure, re-tighten
the test point screw, taking care not to
overtighten. Ensure that test point
screw is gas sound, using a non-corro­sive gas leak detecting fluid.

Programmer

The programmer must be set to
manual operation before the oven can
be used manually - see the
‘Programmer / Clock’ section.

Electrical Systems Check

In the event of an electrical fault, the
preliminary electrical system check
(earth continuity, short circuit, polarity
and resistance to earth) must be
carried out. There is also a Fault
Finding Section in this book.

Ignition

The automatic ignition will continue to
spark for a short time after the burner
flame has lit, until the flame is established.

Maxigrill

1. The door must be open for the grill
burner to ignite.

2. Turn the Top Oven / Maxigrill
control knob clockwise to the grill
setting.

Do not push in.

3. Close the door and check that the
burner goes out. The grill burner will
re-ignite when the door is opened.

Top Oven

1. Close the oven door and turn the
control knob to the required setting,
the burner will ignite.

Do not push in.

Main Oven

1. Close the oven door and turn the
control knob to the required setting,
the burner will ignite.

Do not push in.

Note: At new installations, it may be
necessary to make several attempts at
lighting before gas reaches the oven,
as only a small amount of gas is
allowed through at each lighting attempt.

Before leaving the installation

Show the customer how to ignite the
ovens and grill and give them this
book. Thank you.

28

INSTALLATION INSTRUCTIONS

When you are cooking, keep
children away from the vicinity
of the appliance.

This product is designed as a domestic
cooking appliance for the preparation
and cooking of domestic food
products, and should not be used for
any other purpose.

• Remove all packaging, protective
films and oils from the appliance
before using it for the first time.

• Make sure you read and
understand the instructions before
using the appliance.

• Keep electrical leads short so they
do not drape over the appliance
or the edge of the worktop.

• Keep all flammable materials (such
as curtains, furnishings and clothing)
away from the appliance.

• Parts of the appliance may be hot
during or immediately after use.
Allow sufficient time for the appliance
to cool after switching off.

• Never use the appliance for
heating a room.

• Do not use the oven with the door
inner glass panel removed.

• When opening the appliance
door, take care to avoid skin
contact with any steam which may
escape from the oven.

• Do not use foil on oven shelves or
allow it to block the oven flue, as
this creates a fire hazard and
prevents heat circulation.

• Do not place items on the drop­down doors when they are open.

• Do not use aluminium foil to cover
the grill pan, or put items wrapped
in foil under the grill, as this
creates a fire hazard.

• Use oven gloves when removing
hot food / dishes from the oven or
grill. The oven / grill and utensils
will be very hot when in use.

• When cooking heavy items - eg;
turkeys - do not pull the oven shelf
out with the item still on the shelf.

• Switch off the electricity supply
before replacing an oven light bulb,
to avoid the risk of electric shock.

All installation, servicing and
maintenance work should be carried
out by a competent person who will
comply with current Regulations,
Standards and Requirements.

When you have finished
cooking check that all controls
are in the off position.

As with all gas appliances, it is
recommended that your appliance is
serviced regularly.

5

BE SAFE - NOT SORRY

Caution: Accessible parts may
be hot when the grill is used.
Young children should be kept
away.

Grill ignition

Open the grill door. Turn the Top
Oven / Maxigrill control knob clock-

wise to the grill setting.
The grill door must be fully open when

the grill is used. If the door is closed
the grill burner will go out. The grill
will re-light when the door is opened
again.

There is a short delay before ignition
whilst the cooling fan speeds up - this
may be for several seconds.

To switch off, return the control knob to
the “off” position.

Note that the grill will not function
when the appliance set for automatic
cooking.

Position the grill pan centrally on the
oven shelf.

Caution:

Never

cover the grill pan or trivet
with cooking foil or allow fat to build
up in the grill pan, as this creates a
fire hazard.

Do not

use the grill if the grill burner
glass is cracked.

Preheating

For best cooked results, the grill should
be preheated until the green ready
light appears (about 3 minutes).

Detachable grill pan handle

Place the handle over the edge of the
grill pan, at the narrow side edges.
Slide the handle to the centre, and
locate between the handle position
indicators.

The handle should be removed from
the pan during grilling, to prevent
overheating.

The handle is designed for removing /
inserting the grill pan under the grill
when grilling.

If cleaning the grill pan when it is hot,
use oven gloves to move it. Do not

use
the handle to pour hot fats from the
grill pan.

Food for grilling should be positioned
centrally on the trivet.

6

USING THE MAXIGRILL

handle

grill pan

trivet

handle position

indicators

Step 4: Check edging strip

The edging strip is factory fitted to
the front side edges of the appliance
front frame. This strip provides the
cabinetry with extra protection from
any escape of heat.

When installing the product, ensure
that the edging strip is correctly located
on the outer edges of the front frame,
before positioning and securing the
appliance to the cabinet.

When securing the appliance, the
fixing screws provided are driven
through the edging strips into the
cabinet - the seal will straighten up
and sit flush to the cabinet when the
screws are fully home.

Step 5: Insert appliance and
secure in position

Note: The unit housing the appliance
must be appropriately fixed.

Method 1: Care must be taken to
ensure the appliance runners are
sufficiently engaged over the top of the
runners on the base units.

Method 2: Insert appliance into

cabinet - ensure that it is engaged over
the top of the side runners.

Method 3: Insert appliance into cabinet.

To secure:

Make sure the appliance is centrally
located.

Method 1: Open the grill door and
you will see the 2 fixing holes at the
top sides of the front frame. Drill
through the fixing holes into the side
trims with a 3.2mm diameter drill.
Secure the appliance to the side trims
with the 2 remaining No 8 x 12mm
(Silver) self tapping screws.

Methods 2 & 3: Open the grill door
and secure appliance into position
using 2 No 8 x 25mm (Silver) chip­board screws through the front frame.

Step 6: Installing a hob above
the appliance

Where the appliance is installed under
a worktop, with a hob installed above
it, the installation instructions for the
hob must be read in conjunction with
these instructions.

Installing a gas hob above the appli­ance; Care must be taken to ensure
the hob inlet pipe is as close to the
back wall as possible, so it doesn’t
obstruct the appliance or the appli­ance inlet pipe.

If a flexible inlet pipe is used, it must
hang vertically and not be trapped
between the oven and rear wall.

27

INSTALLATION INSTRUCTIONS

seal

front frame

door

handle

26

INSTALLATION INSTRUCTIONS

Step 3: Connect to the gas supply

1. The inlet to the appliance is pipe
thread ISO RP

1

⁄2

” internal situated

at the rear top right corner.

2. Fit the bayonet connection to the
wall in the shaded area as shown.

3. Fit the strainer (supplied with the
appliance) to the flexible hose inlet
as shown, making sure that it is
pushed fully into place.

4. Use a 900mm - 1125mm length of
flexible connector and make sure it
does not block the fan inlet and
cannot come into contact with
moving parts of the cabinetry - eg;
drawers and doors.

5. Natural Gas - Flexible connections

should be to BS 669. Parts of the
appliance likely to come into contact
with a flexible connecter have a
temperature rise less than 70˚C.

LP Gas - For flexible connections,
use a bayonet type hose, suitable
for use on LP Gas up to 50 mbar
pressure rise and 70˚C temperature
rise. The flexible hose should be
coloured black with a red stripe,
band or label. If in doubt, contact
your supplier.

6. Make sure all connections are gas
sound.

Important: - ensure that you route all
mains and electrical cables and
flexible tubing well clear of any
adjacent heat source, such as an oven
grill or hob.

Ensure that all pipe work is of the
correct rating for both size and
temperature.

Rear

Wall

60 mm

100

mm

150 mm

square

When you are cooking keep
children away from the vicinity
of the oven.

The top oven can be used generally,
in the same way as the main oven,
to cook the full range of dishes, but it
is a

SECONDARY oven and there are

some differences.
Please refer to the accompanying

‘Cooking Guide’ for cooking in the
top oven.

Top oven ignition

Turn the Top Oven / Maxigrill control
knob anticlockwise to the required
gas mark.

There is a short delay before ignition
(up to 10 seconds) as the cooling fan
builds up pressure.

The top oven burner will not come on
unless the oven door is closed.

To turn off, return the control knob to
the “off” position.

Note:

As part of the cooking process, hot air
is expelled through a vent at the top of
the oven(s). When opening the oven
door, care should be taken to avoid
any possible contact with potentially hot
air, since this may cause discomfort to
people with sensitive skin. We recommend
that you hold the underneath of the
oven door handle.

Warning: Do not use the oven(s) if
the fan is not working.

7

USING THE TOP OVEN

When you are cooking keep
children away from the vicinity
of the oven.

Manual operation

The oven cannot be used manually
when the programmer is set for
automatic cooking; if A (AUTO) is
showing on the programmer display,
press the cook time and ready
time buttons simultaneously to cancel
the automatic setting.

Main oven ignition

Turn the control knob anticlockwise to
the required gas mark.

To turn off, return the control knob to
the “off” position.

Automatic operation

See ‘Programmer / Clock’ section. Please
refer to Cooking Guide for important
instructions regarding food hygiene &
safety during automatic cooking.

We recommend that 15 minutes is
added to the cooking time when using
the automatic cooking facility, to allow
for preheating.

Oven light

All oven lamps will light when an oven
is in use.

Note:

As part of the cooking process, hot air
is expelled through a vent at the top of
the oven(s). When opening the oven
door, care should be taken to avoid
any possible contact with potentially hot
air, since this may cause discomfort to
people with sensitive skin. We recommend
that you hold the underneath of the
oven door handle.

Warning: Do not use the oven(s) if
the fan is not working.

8

USING THE MAIN OVEN

25

Step 3: Connect to the electricity
supply

This appliance must be connected by
a competent person, using fixed
wiring via a double pole switched
fused spur outlet, with a contact
separation of 3mm at all poles.

We recommend that the appliance is
connected by a qualified electrician,
who is a member of the N.I.C.E.I.C.
and who will comply with the I.E.E.
and local regulations.

Warning: This appliance must be
earthed.

The wires in the mains lead are
coloured in accordance with the
following code:

Green & Yellow = earth,
Blue = neutral,
Brown = live.

As the colours of the wires in the mains
lead for the appliance may not
correspond with the coloured markings
identifying the terminals in your spur
box, proceed as follows:

1. The wire which is coloured green
and yellow must be connected to
the terminal marked E (Earth) or
coloured green.

2. The wire which is coloured blue
must be connected to the terminal
marked N (Neutral)

LOAD or

coloured Black.

3. The wire which is coloured brown
must be connected to the terminal
marked L (Live)

LOAD or coloured

Red.

If the supply cord is damaged, obtain
a special cord from the Customer
Support Helpline, which must be fitted
by a qualified person.

ON

FUSE

Use a 3 amp fuse

Typical example of a double
pole fused spur outlet

N

L

SUPPLY

LOAD

L

~

N

LOAD

13

250

Neutral

Live

Earth

Cable

INSTALLATION INSTRUCTIONS

Method 3: Housing unit with internal
height 710mm or more

Note: You will not need the 4 runners
and 2 trims that are packed with the
oven for this installation.

Remove any fixings that may prevent
entry of the oven into housing, or
obstruct the gas inlet pipe. The
cabinetry should be kept structurally
sound by fixing to adjacent cabinets,
floor or worktop.

24

560 - 570mm

Min 550mm

Min
710
mm

706
mm

703

mm

550mm

595mm

9mm

697
mm

547mm

12mm gap in
plinth for air intake

support

shelf

space behind

appliance to
be kept clear

worktop

rear wall

12mm air

gap in top

of plinth

min 30mm air gap
required at back of
support shelf

1. When installed in a typical
600mm deep built in housing unit,
the false back should be removed
from the housing unit to provide
the necessary depth for installation.

2. When the false back is removed,
it is normally the case that the
support shelf for the appliance
leaves a gap between the back edge
and the wall of approximately
80mm.

3. If no gap occurs between the back
edge of the shelf and the wall
behind the unit, you must create a
gap of at least 30mm by
shortening the shelf.

INSTALLATION INSTRUCTIONS

Oven furniture

Oven shelves

The oven shelf must be positioned with
the upstand at the rear of the oven and
facing upwards.

Position baking trays and roasting tins
on the middle of the shelves, and leave
one clear shelf position between
shelves, to allow for circulation of heat.

Baking tray and roasting tins

For best cooked results and even
browning, the maximum size baking
trays and roasting tins that should be
used are as follows;

Baking tray 350mm x 280mm
This size of baking tray will hold up to

16 small cakes.
Roasting tin 370mm x 320mm
We recommend that you use good

quality cookware. Poor quality trays
and tins may warp when heated,
leading to uneven baking results.

9

USING THE OVENS

The Programmer Buttons

minute minder
cook time
ready time
minus
plus

To set the “Time of Day”

Press the cook time and ready time
buttons simultaneously

, and keep the
buttons depressed. Use the plus and
minus buttons to set the time of day,
eg; 12.00.

A (Auto) symbol goes out, cookpot
symbol comes on.

To select an alarm tone

Press the minus button to listen to the
first tone.

Release the minus button and press it
again to listen to the second tone, etc.

Releasing the minus button after the
tone has sounded will automatically
select that tone.

Manual operation

To set the programmer to manual
operation at any time (cancelling any
automatic setting), press the cook time and
ready time buttons simultaneously. The
programmer must be set to manual before
the appliance can be used manually.

Setting the minute minder

Press the minute minder button, then
use the plus and minus buttons to set
the required time.

The minute minder (bell) symbol will
appear on the display.

You can cancel the minute minder at
any time by pressing the minute
minder button and the minus button
until the display returns to 0.00.

After setting, the display will revert to
show the time of day, but you can press
the minute minder button, and the
display will show the minutes remaining.

The tone will sound at the end of the
time set - to cancel the tone, press the
minute minder button.

10

PROGRAMMER / CLOCK

Method 2: Housing unit with internal height less than 710mm.

23

50mm

min 550mm

560 - 570mm

687

mm

710mm

runners

INSTALLATION INSTRUCTIONS

Method 2: Housing unit with internal
height less than 710mm

Note: You will not need the 2 side
trims (687mm long) or the appliance
runners for this installation. You will
need the 2 runners to fix to the
adjacent cabinets.

Before you start - make sure, before
removing the bottom shelf or modifying
the housing unit, that it will remain
structurally sound - eg; by fixing to
adjacent cabinets, floor or worktop.

There must be enough space at the
back of the oven for the gas inlet pipe
to hang clear of any obstructions.
You may have to cut into, or remove,
any rear cross members from the
housing unit too obtain the 550mm
minimum depth.

To obtain the required 710mm height,
you may have to lower or remove the
bottom shelf, remove any cross rails
and reposition brackets.

Fix the runners:

1. Take the side trim, hold it against
the side of the base unit, and use
it to mark off 687mm from the top
edge of the side unit to the top
edge for the runner.

Note: This ensures a 5 - 8mm clear­ance from the underside of the
worktop to the top of the appliance.

2. Measure 50mm from the front
edges of the base units, to mark
the front edge for the runners.

3. Take 6 of the n

o

8 x 12mm (black)
chipboard screws and screw the
runners into position the right way
up as shown.

4. If necessary, adjust the height of
the plinth to just below the bottom
edge of the runners.

22

INSTALLATION INSTRUCTIONS

11

1. A (Auto) symbol appears.

2.

3. A (Auto) symbol will flash.

4. A (Auto) symbol goes out.

Semi-automatic cooking

(example)

You have started cooking a meal or
dish in the oven, and want to set the
time for the oven to switch off

.

Press the cook time button, then use the
plus and minus buttons to set the
display to show the length of cooking
time required, eg; 2 hours as shown (1).

After setting, the display will revert to
show the time of day, but you can
press the cook time button and the
display will show how much cooking
time still remains on the clock.

Press the ready time button, and the
display will show the actual time the
oven is going to switch off, eg; 18.00
as shown (2).

At the end of the cooking time, the
alarm will sound, and the oven will
automatically switch off.

To switch off the alarm, press the
minute minder button (3).

When the oven has switched off,

return the oven control knob to
the “off” position, and press the

cook time and ready time buttons to
return to manual operation (4).

If you wish to cancel the automatic
setting, or to cancel any remaining
cooking time left on the clock before
the alarm sounds, press the cook time
and ready time buttons simultaneously.
(4).

A
U

T

O

A
U

T

O

A
U

T

O

PROGRAMMER / CLOCK

12

5. A (Auto) symbol appears.

6. The cookpot symbol will

disappear from display.

7. The cookpot symbol will appear

on display.

8.

Fully automatic cooking

(example)

For use when a delayed start time is
required.

You want to set the length of cooking
time, and the time for the oven to switch
off. The programmer will automatically
calculate the cooking start time.

Turn the oven control to the
required temperature.

(Oven will begin normal cooking
mode.)

Press the cook time button, then use the
plus and minus buttons to set the
display to show the length of cooking
time required, eg; 2 hours as shown (5).

Press the ready time button, and the
present ready time will be displayed.
Using the plus and minus buttons you
can set the display to show the actual
time you want the oven to switch off,
eg; 18.00 hours (6.00 pm) (6).

The display will revert to show time of day.
The oven will automatically switch on

at the calculated start time of 16.00
hours (4.00 pm) (7).

A single press of the cook time button
shows the cooking time remaining
before the oven automatically switches
off (8).

A
U

T

O

A
U

T

O
A

U

T

O

A
U

T

O

PROGRAMMER / CLOCK

21

50mm

min 550mm

598 - 602mm

687

mm

710mm

runners

sidetrim

Method 1: Without housing unit (between 2 base units)

INSTALLATION INSTRUCTIONS

Method 1: Without housing unit
(between 2 base units)

Before installing the appliance, check
the internal dimensions as shown.

The space for the appliance must be
clear of obstructions and there must be
enough space at the back of the oven
for the gas inlet pipe to hang freely.
You may have to cut into or remove
any rear cross members from the
housing unit to obtain the 550mm
minimum depth.

The fixing kit

is packed onto the oven
under the polystyrene packaging. You
will find 2 side trims (687mm long)
and 4 runners (420mm long). The
fixing screws are in a polythene bag
in the oven pack.

1. Take the 6 n

o

8 x 12mm long (sil­ver) self tapping screws from the
polythene bag, and use them to fit
one runner to each side of the
appliance.

2. Make sure they are the right way
up as shown.

3. Take one of the side trims, hold it
against the side of the base unit,
and mark off 687mm from the top
edge of the base unit, to the top
edge of the runner.

Note: This ensures a 5 - 8mm
clearance from the underside of the
worktop to the top of the appliance.

4. Measure 50mm from the front
edge of the base units, to mark the
front edge of the runners.

5. Take 6 of the n

o

8 x 12mm (black)
chipboard screws and screw the
runners into position the right way
up as shown.

6. Fit the side trims to be flush to the
top and front edges of the base
units, using the remaining 6 n

o

8 x

12mm (black) chipboard screws.

20

INSTALLATION INSTRUCTIONS

13

9. A (Auto) symbol will flash.

10.

11. A (Auto) symbol goes out.

The oven will automatically switch off
at 18.00 hours (6.00 pm) and the
alarm will sound (9).

To switch off the alarm press the
minute minder button (10).

When the oven has switched off,
return the oven control knob to the
“off” position, and press the cook time
and ready time buttons simultaneously
(11) to return to manual operation.

If you wish to cancel the automatic
setting before cooking has started,
and return to manual operation, press
the cook time and ready time buttons
simultaneously (11).

To cancel any remaining cooking time
left on the clock before the alarm
sounds, press the cook time and ready

time buttons simultaneously (11).

A
U

T

O

A
U

T

O

PROGRAMMER / CLOCK

Caution: Any cleaning agent
used incorrectly may damage
the appliance.

Always let the oven cool before
cleaning.

Some cooking operations generate a
considerable amount of grease. This,
combined with spillage, can become a
hazard if allowed to accumulate on
the appliance through lack of cleaning.
In extreme cases this may amount to
misuse of the appliance and could
invalidate your guarantee.

It is recommended that the appliance
is cleaned after open roasting.

Do not use caustic, corrosive or
abrasive cleaning products, products
containing bleach, coarse wire wool
or any hard implements, as they will
damage the surfaces.

All parts of the appliance can be
safely cleaned with a cloth wrung out
in hot soapy water.

Chrome plated parts

OVEN SHELVES & OVEN SHELF RUNNERS,
GRILL PAN TRIVET

Do not use abrasives or polishes. Use a
moist soap pad - eg; “Brillo”. These items
may also be cleaned in a dishwasher.

Note: Oven shelf runners can be
removed for cleaning. Grasp the
runners, and slide out of the hanging
holes as shown.

Vitreous enamel parts

GRILL PAN

, OVEN FLOOR
Use a mild cream cleaner - eg; “Cif”.
Stubborn marks may be removed with

a moistened “Brillo” pad.
The grill pan may be cleaned in a

dishwasher, or with a nylon brush in
hot soapy water.

Painted, plastic & metal finish parts

DOOR HANDLE, CONTROL KNOBS

Only use a clean cloth wrung out in
hot soapy water.

Easy care surfaces

OVEN SIDES AND BACK

We recommend that the appliance is
cleaned after open roasting, and also
after roasting at temperatures higher
than gas mark 5, to help prevent a
build up of fats. Use of a trivet in a
roasting tin when roasting will help
reduce fat splashing.

Caution: Most types of cleaning
agent will damage these surfaces.

Only use a few drops of washing up
liquid in hot water. Wipe the surfaces
with a clean cloth wrung out in hot soapy
water - if larger splashes of fat do not
readily disappear, scrub the area with
a nylon brush or nylon pan scourer
and hot soapy water. Rinse well and
heat the oven to dry the surfaces.

14

CLEANING

Before you start - please read the
instructions carefully - planning your
installation will save you time and effort.

Look at the different ways the appliance
can be installed - as shown on the
following pages - and plan the installation
to suit your

situation.

Leave the appliance in the base tray
packaging until you are ready to install it.
When you remove the appliance from the
base tray packaging, take care not to
damage it.

Whilst every care is taken to eliminate
burrs and raw edges from this product,
please take care when handling - we
recommend the use of protective gloves.

Please note that the weight of the appliance
is approximately 42kg (unpacked). Take
care when lifting in into the housing unit ­always use an appropriate method of lifting.

This appliance must be installed only at
low level - ie; under a worktop. The
controls have been designed for viewing at
a low level, and it should therefore not be
installed at high level.

Please note that all dimensions and sizes
are nominal, some variation is to be
expected.

If this appliance is to be installed near to a
corner where the adjacent cabinets run at
right angles forward of the appliance,
there must be a gap of at least 90 mm
between the appliance and the cabinets,
to prevent overheating of the cabinets.

Important: Do not modify the outer
panels of this appliance in any way.

Fixing screws - The fixing screws are in
a polythene bag in the oven pack.
Depending on the method of installation,
some of the screws may not be needed.

Step 1: Prepare for installation

There are 3 methods of installing
the appliance:

Method 1:

Into a space between two

base units, ie; without a housing unit.

Method 2:

Into a housing unit, with an
internal height of less than 710mm, which
can be modified to obtain the required
dimensions.

Method 3:

Into a housing unit, with an

internal height of 710mm or more.
If you have a non standard size of cabinet

which leaves a gap above or below the
appliance, you may be able to buy a trim
kit (to fill in the gap) from the supplier of
your cabinets.

19

Quantity Colour Description For Fixing:

6 Silver No 8 x 12mm long Runners to appliance

Self tapping screw

12 Black No 8 x 12mm long Runners and sidetrims to cabinet

Chipboard screw or housing

4 Black No 8 x 25mm long Appliance to cabinet

Chipboard screw

2 Silver No 8 x 12mm long Appliance to sidetrims

Self tapping screw

INSTALLATION INSTRUCTIONS

Before you start: Please read the
instructions. Planning your installation will
save you time and effort.

Prior to installation, ensure that the local
distribution conditions (nature of the gas and
gas pressure) and the adjustment of the
appliance are compatible. The adjustment
conditions are stated on the data badge.

This appliance is not connected to a combustion
evacuation device. It shall be installed and
connected in accordance with current
installation regulation. Particular attention
shall be given to the relevant requirements
regarding ventilation.

In your own interest and that of safety, it is
the law that all gas appliances be installed
and serviced by competent persons.
CORGI registered installers undertake to
work to satisfactory standards.

Where regulations or standards have been
revised since this handbook was printed,
always use the latest edition.

In the UK the regulations and
standards are as follows:

1. Gas Safety Regulations 1996
(Installation and Use).

2. Building Regulations - Issued by the
Department of the Environment.

3. Building Standards (Scotland)
(Consolidated) - Issued by the Scottish
Development Department.

4. The current I.E.E. Wiring Regulations.

5. Electricity at Work Regulations 1989.

6. BS 6172 Installation of Domestic Gas
cooking Appliances

Also, for LP Gas, refer to BS 5482
Part 1, Part 2 or part 3 as relevant.

7. Installation & Servicing Instructions for
this appliance.

For installation in countries other than the
UK, the appliance must be connected in
accordance with all local gas and electrical
regulations. In the Republic of Ireland,
Installers should refer to IS813 Domestic
Gas Appliances.

Ventilation Requirements

The room containing the appliance should
have an air supply in accordance with
BS 5440: Part 2: 1989:

• All rooms require an openable window,
or equivalent, and some rooms will
require a permanent vent as well.

• For room volumes up to 5m

3

an air

vent of 100cm2is required.

•

If the room has a door that opens directly
to the outside, or the room exceeds
10m3, NO AIR VENT is required.

• For room volumes between 5m

3

and

10m3an air vent of 50cm2is required.

• If there are other fuel burning appliances
in the same room, BS 5440: Part 2:
1989 should be consulted to determine
the air vent requirements.

• This appliance must not be installed in
a bed sitting room of less than 20m

3

or

in a bathroom or shower room.

Windows and permanent vents should
therefore not be blocked or removed without
first consulting a CORGI gas installer.

LP Gas only - Do not install this appliance
in a room below ground level. This does
not preclude installation into rooms which
are basements with respect to one side of
the building, but open to ground level on
the opposite side.

In the Republic of Ireland, refer to relevant Irish
Standards for correct ventilation requirements.

Failure to install appliances correctly

is

dangerous and could lead to prosecution.

18

INSTALLATION INSTRUCTIONS

Glass parts

FACIA PANEL

& DOOR PANELS

Use a mild cream cleaner - eg; “Cif”.
Rinse thoroughly and dry with a soft
cloth. Do not

use abrasive cleaners

or polishes.
To remove the glass panel for cleaning,

open the door to the door stop position
(about 30˚ open), hold the top and
bottom edges of the panel and slide
out. Note that if the door is opened
fully when removing the inner door
glass panel, the door may spring shut.

Important: if the inner door glass
panel is removed for cleaning, it must
be replaced the right way up as
shown, and pushed fully in to the
stop position.

Ceramic grill glass

LOCATED IN ROOF OF COMPARTMENT

After using the top oven or grill, wait
until the grill glass is cool before
giving it a quick wipe over with a
clean damp cloth. Most splashes on
the grill glass will burn off as the grill
is used, but if necessary, it can be
cleaned using a ceramic hob cleaner ­eg; “Hob Brite” (by Homecare *), or a
moist soapy “Brillo” pad.

When cleaning, do not exert pressure
on the grill glass. For removing
stubborn deposits, we recommend the
use of a ceramic hob scraper.

* Homecare products are available
mail order from ✆ 0208 871 5027.

15

CLEANING

30˚

Door stop position

SLID

E IN

TH

IS SID

E U

P

Stainless Steel surfaces (stainless
steel finish models only)

FACIA PANEL

, HANDLES, DOOR PANELS

Only use a clean cloth wrung out in hot
soapy water, and dry with a soft cloth.

Stubborn marks can be removed using
“Luneta”. We recommend that you
clean the whole of the stainless steel
area to maintain a uniform finish.
Supplies can be purchased from the
Customer Care Centre.

Do not use undiluted bleach or any
products containing chlorides as they
can permanently damage the steel.

Extra care should be taken when cooking
food in salted water. Some foods are
corrosive - eg; vinegar, fruit juices and
especially salt

- they can mark or
damage stainless steel if they are left
on the surface. Turn off and wipe any
spillage immediately, taking care to
avoid skin contact with any hot surface
or spillage.

Sharp objects can mark the surface of
stainless steel, but marks will become
less noticeable with time.

To maintain the finish of the stainless
steel, or to remove any greasy marks,
wipe the stainless steel surface spar­ingly with a minimum

amount of

“Johnson’s Baby Oil” and kitchen paper.
Do not use cooking oils, as these may

contain salt, which can damage the
stainless steel surface.

16

CLEANING

If in doubt, isolate the appliance from the
gas and electrical supplies & contact
Customer Care.

The 720GRa double oven & grill unit uses
a built in micro-computer to control the oven
temperature. The computer also indicates
when the ovens are ready for use, and
oversees the gas supply, fan operation and
ignition sequence ensuring that these are
operating safely.

Should the micro-computer find any fault in
the systems under its control, it will either;

- stop the ignition and gas valve

operation or;

- if the cooker is already in use it will

shut down the operation until the fault
is rectified.

The cooling fan will, however, continue to
run on for a while, and the oven lights
remain on.

Electrical interference either from the mains
or other electrical equipment may cause
the micro-computer to indicate a fault when
non exists, chiefly when first turning on.

It may be necessary to reset the micro­computer (by turning the electricity supply
off at the mains plug) when first bringing
the appliance into operation.

Opening oven doors whilst the micro­computer is running through it’s checks
may cause it to lock out.

In the event of a power cut

1. Switch off the appliance at the socket.

2. When the power returns, see the
‘Programmer / Clock section to ‘Set
the time of day’.

In the event of the gas supply being
disconnected it may be necessary to

make several lighting attempts before gas
reaches the appliance.

17

Lamp signal Cause Action

Steady green Selected oven / grill None - normal operation.

has reached required
temperature.

Green lamp & red indicator Soft lockout. Reset - turn control knob off / on.
dial of main oven cavity
flash.

Green lamp & red indicator Hard lockout. Reset - turn off / on at mains. If
dial for both ovens flash (possible interference) recurring, a service visit may be
alternately left / right. required.

Green lamp & red indicator Fault on micro-computer Service visit required.
dial for both ovens flash
together.

MICRO-COMPUTER