Glow-worm Chatsworth 4 User Manual

Instructions for Use

Installation and Servicing

To be left with the user

221907C.04.02

Chatsworth 4 BBU

Standard

Frame

illustrated

Brass Standard Frame

Black Wide Frame

Brass/Black Wide Frame

Silver/Black Wide Frame

Used with

Dovedale 4 BBU

Brass/Black Wide Frame

Glow-worm BBU 45/4 and

Glow-worm BBU 54/4

The instructions consist of three parts, User, Installation and Servicing Instructions, which includes the Guarantee Registration

Card. The instructions are an integral part of the appliance and must, to comply with the current issue of the Gas Safety

(Installation and Use) Regulations, be handed to the user on completion of the installation.

7625

Guarantee Registration

Thank you for installing a new Glow-worm appliance in your home.

Glow-worm appliances' are manufactured to the very highest standard so we are pleased

to offer our customers' a Comprehensive First Year Guarantee.

In the centre pages are to be found your Guarantee Registration Card, which we recommend you complete and

return as soon as possible.

If this card is missing you can obtain a copy or record your registration by telephoning the Heatcall Customer

Service number 01773 828100.

Our Guarantee gives you peace of mind plus valuable protection against breakdown by covering the cost of:

✔

All replacement parts

❏

✔

All labour charges

❏

All call-out charges

✔

❏

One Contact Local Service

REGISTER YOUR GLOW-WORM APPLIANCE

FOR 1ST YEAR GUARANTEE PROTECTION

CALL 0208 247 9857

Customer Services:
Tel: [phone]
Fax: [phone]

Nottingham Road, Belper, Derbyshire. DE56 1JT

Tel: [phone] Fax: [phone]

Hepworth Heating Ltd.,

General/Sales enquiries:

Important Information

Certification

This fire front is certificated for safety and performance. It is, therefore, important that no alteration is made to the fire front, without
permission, in writing, from Hepworth Heating Ltd.

Any alteration that is not approved by Hepworth Heating Ltd., could invalidate the cetification, the warranty and could infringe the
statutory requirements.

CE Mark

The CE mark on this appliance shows compliance with:

1. Directive 90/396/EEC on the approximation of the Laws of the Member States relating to appliances burning gaseous fuels.

2. Directive 73/23/EEC on the harmonization of the Laws of the Member States relating to electrical equipment designed for
use within certain voltage limits.

3. Directive 89/336/EEC on the approximation of the Laws of the Member States relating to electromagnetic compatibility.

INFORMATION FOR THE INSTALLER AND SERVICE ENGINEER.

Under Section 6 of the Health and Safety at Work Act 1974, we are required to provide information on substances hazardous to health.
The Adhesives and sealants used in this appliance are cured and give no known hazard in this state.

REFRACTORY CERAMIC FIBRE

This product uses fuel effect Pieces containing Refractory Ceramic Fibre (RCF), which are man-made vitreous silicate fibres.
Excessive exposure to these materials may cause temporary irritation to eyes, skin and respiratory tract, consequently, it makes
sense to take care when handling these articles to ensure that the release of dust is kept to a minimum.

To ensure that the release of fibres from these RCF articles is kept to a minimum, during installation and servicing we recommend
that you use a HEPA filtered vacuum to remove any dust and soot accumulated in and around the fire before and after working on
the fire. When replacing these articles we recommend that the replaced items are not broken up, but are sealed within heavy duty
polythene bags, clearly labelled as RCF waste. This is not classified as “hazardous waste” and may be disposed of at a tipping site
licensed for the disposal of industrial waste. Protective clothing is not required when handling these articles, but we recommend you
follow the normal hygiene rules of not smoking, eating or drinking in the work area and always wash your hands before eating or
drinking.

INSULATION and SEALS

Ceramic fibre and glass fibre used in insulation panels rope and gaskets.
These can cause irritation to skin, eyes and the respiratory tract.
If you have a history of skin complaint you may be susceptible to irritation. High dust levels are usual only if the material is broken.
Normal handling should not cause discomfort, but follow normal good hygiene and wash your hands before eating, drinking or going

to the lavatory.
If you do suffer irritation to the eyes or severe irritation to the skin seek medical attention.

Spare Parts

REMEMBER, When replacing a part on this appliance, use only spare parts that you can be assured conform to the safety and
performance specification that we require. Do not use reconditioned or copy parts that have not been clearly authorised by Hepworth
Heating Ltd.

CONTENTS DESCRIPTION SECTION PAGE No.

INSTRUCTIONS

FOR USE

Introduction 3
Lighting the Boiler and Fire Front 4
Cleaning 6

INSTALLATION

INSTRUCTIONS

SERVICING

INSTRUCTIONS

221907C

General Data 1 8
Types of Installation and Flue 2 10
Installation 3 11
Lighting, Testing and Fitting of Internal Parts 4 12
Instructions to User 5 16

Servicing 6 16
Fault Finding 7 19
Replacement Parts 8 20
Spare Parts 9 23

2

Instructions for Use

690

Chatsworth
Illustrated
(same dimensions
for Dovedale)

MINIMUM FLAT AREA AND FIXTURES CLEARANCES

The Gas Safety (Installation and Use)
Regulations

In your interests and that of safety it is the Law that ALL gas
appliances are installed by a competent person in accordance
with the current issue of the above regulations.

Glow-worm Dovedale BBU or Chatsworth BBU
with Glow-worm BBU 45/4 or BBU 54/4.

These instructions should be read and carefully followed for the
safe and economical use of your combined fire front and central
heating boiler.

The fire front can be used only with special Glow-worm 45/4,
54/4 Back Boiler Units.

The fire front and back boiler must be installed as a complete
appliance.

The boiler and fire front can be used either together or
independently.

In the event of a power failure the fire front can still be used on
its own, see “Lighting the Fire Front”.

Important Notice

This appliance is for use only on G20 gas.
A slight smell may occur, for a short time, after initial lighting, this

is quite normal and it will quickly disappear.
With a little use the interior of the fire front will discolour and

acquire the appearance of a solid fuel fire.
CAUTION: Combustible furniture or materials should not be

placed closer than 1metre radius in front of the fire front, refer
to diagram 1 for side clearances.

Clothing or other flammable material must not be placed on the
fire front castings.

Soft wall coverings, for example, blown vinyl wallpaper, are
easily affected by heat, they may, therefore, scorch or become
discoloured when close to a heating appliance. Please bear this
in mind when having a heating appliance installed and when
redecorating

WARNING

The fire front has a naked flame.
A fireguard must be used for the protection of children, the infirm

or elderly.

150

150

800 WIDE FRAME

780 STANDARD FRAME

Diagram 1

A fireguard should comply with the current issue of BS6539
“Fireguards for use with solid fuel appliances” or the current
issue of BS6778 “Fireguards for use with portable, free standing
or wall mounted heating appliances”.

Do not allow any refuse or rubbish to be burnt on this fire front,
or any objects to be placed in the flue exit.

Maintenance/Servicing

To ensure the continued efficient and safe operation of the
appliance it is recommended that it is checked and serviced as
necessary at regular intervals. The frequency of servicing will
depend upon the particular installation conditions and usage,
but in general once a year should be enough.

If this appliance is installed in a rented property there is a duty
of care imposed on the owner of the property by the current
issue of the Gas Safety (Installation and Use) Regulations,
Section 35.

It is the law that this work be carried out by a competent person.
To obtain service, please call your installer or Heatcall (Glow-

worm’s own service organisation) using the telephone number
given on the front page of these instructions.

Regularly make sure that the purpose provided ventilation is
free from obstructions.

Please be advised that the ‘Benchmark’ logbook (supplied with
back boiler unit) should be completed by the installation engineer
on completion of commissioning and servicing.

All CORGI Registered Installers carry a CORGI ID card, and
have a registration number. Both should be recorded in your
boiler Logbook. You can check your installer is CORGI registered
by calling CORGI direct on :- 01256 372300.

Heat Output - Fire Front

The gas fire front will work for about 4 hours 20 minutes at full
on rate on one therm of gas. The price of a therm of gas will vary
according to the tariff.

See also “Lighting the Fire Front”

Gas Leak or Fault

If a gas leak or fault exists or is suspected the appliance MUST
be turned off, including the electrical supply and MUST NOT BE
USED UNTIL THE FAULT HAS BEEN PUT RIGHT. Advice/
help should be obtained from your installation or servicing
company or the local gas undertaking.

6215

3

221907C

Instructions for Use

Clearances

A shelf or surround of a maximum depth of 150mm may be
fitted, provided that clearances are as diagram 1, however, for
every extra 25mm above the fire front the depth of the shelf may
be increased by 25mm.

On no account may carpet or other combustible material be laid
directly under the fire front.

Frost

If the boiler is to be out of use for any long time during severe
weather conditions we recommend that the whole of the system,
including the boiler be drained off to avoid the risk of freezing up.

If fitted, switch off the immersion heater in the domestic hot
water cylinder.

If you are in doubt your installation or servicing company or the
local gas undertaking should be contacted.

Electrical Supply

WARNING. The appliance must be earthed.
Connection of the appliance and any system controls to the

mains (230V~50Hz) must be through a 3A fused double pole
isolating switch, having a minimum double pole contact
separation of 3mm, serving only the boiler and system controls.

The colours of three core flexible cable are, Brown - live, Blue

- neutral, Green and yellow - earth.

Safety Device.

This appliance is fitted with a flue blockage safety device which
will shut down the appliance in the event of abnormal flue
conditions. This device is NOT a substitute for an independently
mounted Carbon Monoxide detector.

If the boiler or fire front shut down frequently, for no apparent
reason, the first things that must be checked are the chimney
and air inlets into the room.

An additional cause of the fire shutting down could be that the
filter in the gas tap is blocked.

Any problems found must be put right, by a competent person,
before the boiler and fire front are used again.

If the burners go out, wait three minutes before relighting, but
check as above.

Lighting the Boiler

The boiler user control is placed behind the ashpit cover.
To remove the ashpit cover unhook from the fret.

Refer to diagram 2 to identify the boiler user control.
See that all other controls are calling for heat.
The clock, room thermostat and programmer, if fitted, will

probably be some distance away from the unit.
To see how these items work and need to be set, read the

manufacturers instructions supplied with them.
Turn the control thermistor knob “A” fully anti-clockwise so that

the pointer is against the “Reset” position on the boiler user
control panel, see diagram 2.

Switch on electrical supply to the back boiler.
There will be a purge for approximately 30 seconds.
NOTE: If the electrical supply is switched rapidly off and on

without gas present the control will purge for 100 sec. Neither
of the indicators will be lit. The appliance will then operate
correctly.

The boiler will automatically light.
This is indicated by a green light on the boiler user control panel

coming on, see diagram 2.
Note: Should the red light on the boiler user control panel come

on, it indicates that the pilot light is not operating correctly, or the
flue blockage safety device has been activated.

When the fault has been corrected, turn the control thermistor
knob “A” fully anti-clockwise so that the pointer is against the
“Reset” position on the boiler user control panel,
see diagram 2.

NO ATTEMPT SHOULD BE MADE TO RELIGHT THE BOILER
UNTIL ANY FAULT HAS BEEN CORRECTED. EXPERT
ADVICE SHOULD BE SOUGHT.

Adjust the control thermistor knob to the required setting between
the minimum and maximum position.

Maximum is approximately 82
The temperature of the hot water cylinder should be periodically

raised to 60
Check that all external controls are also set to your requirements.
If the burner goes out for no apparent reason it is IMPORTANT

that the advice given under “Safety Device” is followed.

o

C.

o

C.

To turn the boiler off

For short periods, turn the control thermistor knob “A” fully anti­clockwise so that the pointer is against the “Reset” position on

221907C

GREEN
LED

CONTROL BOX

CONTROL
THERMISTOR
KNOB “A”

ELECTRICAL
PLUG

4

BOILER
USER
CONTROL

GAS SERVICE
COCK

PRESSURE
TEST POINT

GAS FIRE
SUPPLY
COCK

GAS
CONTROL
VALVE

10102

Diagram 2

Instructions for Use

the boiler user control panel, see diagram 2.
The pilot will remain alight if there is a call for heat. To relight

the main burner turn control thermistor knob “A” clockwise to the
desired setting between the minimum and maximum position.

For longer periods, turn control thermistor knob “A” anti-clockwise
so that the pointer is against the “Reset” position on the boiler
user control panel. Switch off the electrical supply to the
appliance.

To relight follow the full lighting instructions given above.

Lighting the Fire Front

Please read the information about the safety device at the
beginning of these User Instructions before lighting the fire.

IMPORTANT If the burner does not light (instructions below)
within three seconds, return the knob to the OFF position, wait
for 10 seconds and repeat the following lighting operation.

1) Slide the control knob down to the “ignition position”, against
its stop and hold in position, see diagram 2, clicking of the
ignition will be heard and the burner will light.

2) Keep the knob in the ignition position for fifteen seconds after
the burner has lit. The ignition system will continue to operate,
indicated by the clicking at this time.

Note: Before releasing, ensure the control knob is against its
stop, to engage the flame supervision device.

3) Move the control knob to the desired position.
Note: Setting 1 is Low, Setting 3 or Coke is High.
To change settings, refer to diagram 3.
Note: Coke setting gives off a high glow, but a low flame effect.
If the burner goes out, wait three minutes before relighting, for

any other reason wait for two minutes.

Lighting the Fire with a Match or Spill

As a temporary measure the fire may be lit with a spill or long
match as follows:-

WARNING. Take care as the burner has a naked flame.
Hold a lighted spill or long match and put it into the hole as

shown in diagram 4 Position the spill so that the flame is over
the burner.

Keep the spill in place, slide the control knob down to the
“ignition position”, against its stop and hold, see diagram 3, the
burner will light, remove the spill.

Keep the knob in the ignition position for fifteen seconds after
the burner has lit.

Before releasing, ensure the control knob is fully depressed
against its stop, to engage the flame supervision device.

Once lit move the control knob to the desired setting.
Note: Setting 1 is Low, Setting 3 or Coke is High.
Note: Coke setting gives off a high glow, but a low flame effect.
If the burner goes out, wait three minutes before relighting, for

any other reason wait for two minutes.
This is a temporary measure only The ignition system should

be repaired or the battery be replaced as soon as possible.

Lighting the Boiler

The boiler controls are placed behind the ashpit cover.

To remove the ashpit cover unhook from the fret.

Refer to diagram 2 to identify the boiler controls.

5897

CONTROL
KNOB

OFF POSITION

COKE SETTING
HEAT SETTING 3

HEAT SETTING 2
HEAT SETTING 1

IGNITION POSITION

Diagram 3

6035

Soot Accumulation

Note: A small amount of soot accumulating is quite natural and
will give the fire a more realistic effect.

If desired, these minor soot deposits can be burned off by
running at the coke setting for approx. one hour.

MATCH

Diagram 4

5

221907C

Instructions for Use

Cleaning your Fire

WARNING. This fire contains metal parts (components) and
care should be taken when handling and cleaning, with particular
regard to edges.

Any cleaning must only be done when the fire is cold.
If large pieces of debris are found the chimney should be

inspected and the fire serviced before further use.
Under normal conditions dusting the surrounds of the fire

should be enough. An occasional wipe over with a damp cloth
will help to remove any marks.

Do not use an abrasive cleaning powder or liquid.

To Clean the Fuel and Fuel Supports - this can
be done by the User

Should any soot accumulation become excessive, the fuel
effect pieces should be removed from the fire for cleaning.
Cleaning should be carried out in a well ventilated area or in the
open air, by gently brushing with the pieces held away from your
face so that you avoid inhaling the dust. We do not recommend
the use of a normal domestic vacuum cleaner, which may blow
dust back into the air.

Remove the fret and ash pit cover, see diagram 5.
Take care not to damage the frame.
Following steps 1 to 8 in reverse order, remove the fuel effect

pieces and fuel effect supports, see diagram 6.
Be careful as with use they become fragile.
Clean the fuel effect pieces and fuel effect supports with a soft

brush, as above.
With the fuel effect pieces and fuel effect supports removed, the

base of the appliance may be cleaned with a vacuum cleaner.
Note: After cleaning, always adhere strictly to the instructions

when reassembling the fuel effect supports and fuel effect
pieces.

Use only the fuel effect approved for this fire.
Do not use more fuel effect pieces than specified.

9457

ASHPIT
COVER

FRET
RETAINING
BRACKET

Fuelbed Fitting

CAUTION. If the fuel effect supports and fuel effect pieces are
damaged, do not light the fire or further test until replacement
parts are fitted.

USE ONLY THE FUEL EFFECT APPROVED FOR THIS FIRE.
DO NOT USE MORE FUEL EFFECT PIECES THAN

SPECIFIED.
DO NOT CHANGE THE LAYOUT OF THE FUEL EFFECT

PIECES.
The importance of positioning the fuel effect pieces correctly

cannot be overemphasised if sooting is to be avoided. The
flame effect may also be impaired and the life of the fuel effect
pieces reduced if assembly directions are not followed.

Before positioning the fuel effect pieces, study carefully the
illustrations showing the layout procedure of the pieces, see
diagram 6.

Follow the steps which are shown numerically in the fuelbed
fitting sequence starting at Step 1, making sure that each stage
is completed before carrying on to the next and that all written
instructions are adhered to, see diagram 6.

STEP 1. When fitting the front support make sure the feet are
located at the back of the retaining lip and the support fits
between the brackets.

FRET

Chatsworth illustrated

STEP 2. Fit the side supports tightly into the front corners
touching the side and front of the appliance.

STEP 3. Fit the rear support, making sure it sits on the bottom
of the brackets, by pushing it down firmly.

STEP 4. Fit the middle support over the burner making sure it
sits behind the brackets on the burner. Keep the support clear
of the cross lighting ports.

STEP 5. Place the two large fuel effect pieces with the flat bases
and round indents down. Leave gaps around the pieces.

NOTE: The remaining fuel effect pieces can be turned as
requires to maintain a constant gap around each fuel effect
piece.

STEP 5 CONTINUED. Place four small fuel effect pieces
starting from the outside, leaving gaps around the pieces. The
left hand outside piece must touch the side of the fire. The right
hand outside piece must touch the left hand side of the burner
support bracket.

STEP 6. Place seven small fuel effect pieces on the middle
support starting from the outside, leaving gaps around the
pieces. The two outside pieces touch the sides of the fire.

Diagram 5

221907C

6

Instructions for Use

STEP 1 - Front support

Make sure feet are behind retaining lip

STEP 2 - Side supports

Make sure cut-out

is on bottom

NOTE : The fuel effect pieces can be
rotated to achieve a random effect.

STEP 5 - 2 Large & 4 small fuel effect pieces

IMPORTANT Leave 3mm gap between
all fuel effect pieces and middle support

Touch
the side

Fit 4 small fuel
effect pieces

Place the 2 LARGE fuel effect pieces
with flat bases and round indents down

Middle support

To touch the
left hand side
of support
bracket

STEP 6 - 7 Small fuel effect pieces

Sit 7 fuel effect pieces on the
middle support

Touch
the side

Leave gaps around pieces

Touch
the side

5982

Position pieces to touch the front and side

STEP 3 - Rear support

Fit this
way up

Make sure the rear support sits on the bottom of the
brackets by pushing it down firmly

STEP 4 - Middle support

Keep cross lighting

ports clear

IMPORTANT This row of fuel effect pieces must not
overlap the front row of fuel effect pieces. Position as
shown on the front edge of the middle support

STEP 7 - 6 Small fuel effect pieces

Touch
the side

Leave

gaps

around

pieces

IMPORTANT This row of fuel effect pieces must not
overlap the middle row of fuel effect pieces.

STEP 8 - 5 Small fuel effect pieces

Fit 5 fuel effect pieces they must touch rear of fire

Not to touch
the side

This row of
fuel effect
pieces can
overlap
slightly

Not to touch
the side

Leave gaps
around
pieces

Touch
the side

Sit 6 small
fuel effect
pieces on
rear
support

Diagram 6

7

221907C

Instructions for Use

STEP 7. Place six small fuel effect pieces on the six flat areas
of the rear support starting from the outside, leaving gaps
around the pieces. The two outside pieces touch the sides of
the fire.

STEP 8. Place five small fuel effect pieces on the top of the rear
support starting from the outside overlapping slightly the
previously fitted pieces and touching the rear of the fire. Leave
gaps around the front and side of the pieces. The two outside
pieces do not touch the sides of the fire.

When you have fitted all the small pieces you may have to adjust
some slightly to maintain constant gaps.

To Replace the Battery - this can be done by
the user

The battery, supplied, should, under normal usage last for
about 18 months.

The replacement is 9V and we recommend that it be of the
alkaline type which can be bought locally.

Remove the fret and ash pit cover, see diagram 5.
Replace the battery as shown in diagram 7.

Replacement Parts

If replacement parts are required apply to your local supplier.
Remove the ashpit cover, see diagram 5.
Quote the name of the appliance indicated on the rear of the

ashpit cover.

Quote the serial number of the fire front found on the label
attached to the chassis to the left of the electrical control box,
see diagram 7.

Quote the back boiler units name and serial number on the data
label which can be found on the base of the boiler, see
diagram 7.

9461

DATA LABEL

BATTERY

Diagram 7

1 General

590 WIDE FRAME
547 STANDARD FRAME

Dimensions are
the same for the
Dovedale except
where shown

GENERAL OVERALL
DIMENSIONS
Chatsworth illustrated

References in these instructions to British Standards and
Statutory Regulations and Requirements apply only to the
United Kingdom.

For Ireland the rules in force must be used.

1 General Notes and Information

There is one cardboard carton, which contains all the parts
necessary for the fitting of the fire front, see diagram 1.4.

Wherever possible, all materials, appliances and components
to be used should comply with the requirements of applicable
British Standards.

62 DOVEDALE

21

Where no British Standard exists, materials and equipment
should be fit for their purpose and of suitable quality and
workmanship.

76 CHATSWORTH

652 WIDE FRAME

630 STANDARD FRAME

6225

1.1 Important Notice

This fire front is for use only on G20 gas.
The back boiler is supplied pre-set to a maximum heat output

setting, for the 45/4 BBU: 11.72 kW (40000 Btu/h), for the 54/4
BBU: 14.21 kW (48500 Btu/h).

These values are permitted and must not be increased when
using the boiler in combination with a Chatsworth 4 or a
Dovedale 4 firefront.

221907C

8