Glowworm Black Ash 3 Operating manual

Supplied By www.heating spares.co Tel. [phone]
Hepworth Heating Ltd.,
Nottingham Road, Belper, Derbyshire. DE56 1JT
General/Sales enquiries:
Tel: [phone] Fax: [phone]
One Contact Local Service
Customer Services:
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Fax: [phone]
221793A. 06. 00
All replacement parts
All labour charges
All call-out charges
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:
Guarantee Registration
BBU Fire Front
Forusewith
56/3e, 56/3pp, 45/2 and56/2
specially designed
Back Boiler Units only
This is a Cat I2H Appliance
BS 6332
BS 5258
Reference in these instructions to British Standards and Statutory
Regulations/Requirements apply only to the United Kingdom.
For Ireland the rules in force must be used.
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.
Tobeleftwiththeuser
❏
✔
❏
✔
❏
✔
Instructions for Use
Installation and Servicing
G.C. No. 37 047 08
REGISTER YOUR GLOW-WORM APPLIANCE
FOR 1ST YEAR GUARANTEE PROTECTION
CALL 0181 380 2555
7441

Supplied By www.heating spares.co Tel. [phone]
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Important Information
Introduction 3
Lighting the Boiler 5
Lighting the Fire Front 9
Cleaning 9
General Data 1 13
Types of Flue Installation 2 15
Fire Front Preperation 3 16
Installation 4 20
Lighting, Testing and Fitting Internal Parts 5 24
Instructions for Use 6 28
Servicing and Replacement of Parts 7 28
Fault Finding 8 33
Replacement Parts 9 36
CONTENTS DESCRIPTION SECTION PAGE No.
INSTRUCTIONS
FOR USE
INSTALLATION
INSTRUCTIONS
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.Directive73/23/EEContheharmonizationoftheLawsoftheMemberStatesrelatingtoelectricalequipmentdesignedforuse
within certain voltage limits.
3.Directive89/336/EEContheapproximationoftheLawsoftheMemberStatesrelatingtoelectromagneticcompatibility-Boiler
and Fire.
INFORMATION FOR THE INSTALLER AND SERVICE ENGINEER.
UnderSection6oftheHealthandSafetyatWorkAct1974,wearerequiredtoprovideinformationonsubstanceshazardoustohealth.
The Adhesives and sealants used in this appliance are cured and give no known hazard in this state.
FUELBEDS, ARTIFICIAL FUEL
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
licensedfor thedisposal ofindustrial waste. Protectiveclothing isnot requiredwhen handlingthese articles,but werecommendyou
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.
Normalhandling should notcausediscomfort, but follownormal good hygiene andwash your hands beforeeating, drinking orgoing
to the lavatory.
If you do suffer irritation to the eyes or severe irritation to the skin seek medical attention.
SERVICING
INSTRUCTIONS

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Instructions for Use
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.
General
These notes should be read and carefully followed for the safe
and economical use of your back boiler and fire front.
Important Notice
Ifthis fire is fitted to aGlow-worm Back Boiler WITHOUT a flue
blockagesafetydevicerefertotheSupplementaryInstallations
in the Instructions for Use.
This appliance is for use only on G20 gas.
The Glow-worm Black Ash 3 BBU gas fire front is to be used
withspecially designed Glow-worm 56/3e,56/3pp, 45/2, 56/2,
45, 56, 45R or 56R Back Boiler Units only.
The fire front and back boiler must be fitted as a complete
appliance.
This is a combined central heating back boiler and gas fire
front. The back boiler and fire front can be operated either
together or independently.
Intheeventofapowerorignitionsystemfailurethefirefrontcan
stillbe used onits own, instructionson how to dothis are given
under “Lighting the Fire Front with a Match or Spill”.
Aslightsmellmayoccur,forashorttime,afterinitiallighting,this
is quite normal and will quickly disappear.
With a little use the interior of the fire front will discolour and
acquire the appearance of a solid fuel fire.
Combustiblefurnituremust notbe placedcloserthan 1metrein
front of the fire front.
Clothingorotherflammablematerialsmustnotbeplacedonthe
fire front casing.
The convection air openings at the top of the fire front and air
inlet grilles at the sides and base must never be obstructed.
Important: Soft wall coverings, for example, blown vinyl
wallpaper, are easily affected by heat, they may therefore,
scorchorbecomediscolouredwhenclosetoaheatingappliance.
This should be borne in mind when having a heating appliance
fitted and when redecorating.
The glass panel on this fire front conforms to the requirements
of the current issue of BS1945 and satisfies the Heating
Appliance (Fireguard) Regulations.
Thefirefrontmustnotbeusedifthispanelisbrokenormissing.
WARNING. Theglass panelgets veryhot whenthe firefront is
on and MUST NOT be touched.
The glass panel does not provide full protection for the young,
elderlyor infirm. Insuch casesextra securitymustbe provided
by fitting a fireguard which complies 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”.
Diagram 1
7409
MAXIMUM
SHELF
DEPTH
FLAT AREA
FIRE FIXING
FACE
890mm 150mm
840mm
150mm

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Instructions for Use
Maintenance
To ensure the continued efficient and safe operation of the
appliance it is recommended that it is checked and serviced at
regular intervals. The frequency of servicing will depend upon
theparticular installation andusage, but ingeneral once ayear
should be enough.
If this appliance is installed in 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.
ItistheLawthatservicingiscarriedoutbyacompetentperson.
To obtain service, please call your installer or Heatcall (Glow-
worm’s own service organisation) using the telephone number
given on the fire plinth.
Please be advised that the ‘Benchmark’ logbook 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
boilerLogbook. YoucancheckyourinstallerisCORGIregistered
by calling CORGI direct on :- 01256 372300.
Heat Input - Fire Front
This gas fire front will run for about 4.4hrs at full on rate on one
therm of gas. The price of a therm of gas will vary according to
the tariff in your area.
At tap position 1 - centre section flame effect
At tap position 2 - centre section flame effect with
outer section fuel bed glow
At tap position 3 - centre and outer sections flame
effect with fuel bed glow
At tap position 4 - (full on) full flame effect and fuel
bed glow
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/servicing company or the local
gas undertaking.
Clearances
A shelf or surround of a maximum depth of 150mm may be
fitted,providedclearancesareasdiagram1,however,forevery
extra 25mm above the fire front the depth of the shelf may be
increased by 25mm.
Onnoaccountmaycarpetorothercombustiblematerialbelaid
directly under the fire front, unless the minimum clearances
shown in diagram 2 is achieved.
The dimension is taken from the bottom of the fire front casting
to the top of the carpet pile or other floor covering.
Frost
CAUTION. If the back boiler is to be out of use for any long
periodoftimeduringsevereweatherconditionswerecommend
that the whole of the system, including the back boiler be
drained off to avoid the risk of freezing up.
Ifanimmersionheaterisfittedinthedomestichotwatercylinder
make sure that it is switched off.
If in doubt your installation/servicing company or the local gas
undertaking should be contacted
Electrical Supply
WARNING The boiler must be earthed.
Connection of the appliance and any system controls to t h e
mains(230V~50Hz)mustbethroughoneunswitchedshuttered
socketoutletanda3Afused3pinplug,bothtothecurrentissue
ofBS1363. Alternatively,afused3Afuseddoublepoleisolating
switch may be used, having a minimum double pole contact
separation of 3mm, serving only the appliance and system
controls.
Thecoloursofthreecoreflexiblecableare,blue-neutral,brown
- live, green and yellow - earth.
As the markings on your plug may not correspond with these
colours, continue as follows:-
Thewirecolouredblue mustbeconnected totheterminal mark
“N” or black.
The wire coloured brown must be connected to the terminal
marked “L” or red.
The wire coloured green and yellow must be connected to the
terminal marked “E”, green or the earth symbol .
Diagram 2
183mm
7410
Diagram 3
7444
PLINTH

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Instructions for Use
Lighting the Boiler (BBU 56/3e ONLY)
Thisapplianceisfittedwith aflue blockagesafety devicewhich
will shut down the appliance in the event of abnormal flue
conditions.ThisdeviceisNOTasubstituteforanindependently
mounted Carbon Monoxide detector.
If the boiler shuts down frequently for no apparent reason the
firstthings to be checkedare the chimney andair inlets into the
room. Any problems found must be put right, by a competent
person, before the boiler is used again.
If the burner does go out, wait three minutes before relighting.
For any other reason, wait two minutes before relighting the
burner.
The boiler controls are situated behind the fire front plinth, see
diagram 3.
Toremovetheplinthgraspeachsideandpull itgentlyforwards
until it disengages.
Refer to diagram 4 to identify the controls.
Turn off the electrical supply at the mains supply outside the
unit.
See that all other controls are set for heating. The clock, room
thermostatandprogrammer,iffitted, willbesituatedawayfrom
the unit. See manufacturers’ instructions supplied with these
items.
Turnthecontrolthermostatknob“A”totheOffposition"O",that
is, fully anti-clockwise (“O” to be against the pointer “B”).
Switchontheelectricalsupplytothebackboilerunit. Aftera30
second delay the pilot will automatically light.
This is indicated by the green light illuminating on the lockout
reset button “C”.
Note: Should the red light on the lockout reset button “C” come
on,itindicatesthatthepilotlightisnotoperatingcorrectly,orthe
flue blockage safety device has been activated.
When the fault has been corrected the lockout reset button “C”
must be depressed.
NOATTEMPTSHOULDBEMADETORELIGHTTHEBOILER
UNTIL ANY FAULT HAS BEEN CORRECTED. EXPERT
ADVICE SHOULD BE SOUGHT.
Adjust the control thermostat knob “A” to the required setting
between "MIN" and “MAX”.
“MAX” is approximately 82°C.
Thetemperatureofthehotwatercylindershouldbeperiodically
raised to 60°C.
Checkthatallexternalcontrolsarealsosettoyourrequirements.
Iftheburner goesoutfor noapparentreason it isIMPORTANT
that the advice given under “Safety Device” is followed.
To Turn the Boiler Off
For short periods, turn control thermostat knob “A”
anti-clockwise until Off position "O" is opposite setting point.
Thepilotwillremainalightifthereisacallforheat.Torelightthe
main burner turn control thermostat knob “A” clockwise to the
desired setting between "MIN" and “MAX”.
For longer periods, turn control thermostat knob “A” anti-
clockwiseto Off position"O". Switch offtheelectrical supply to
the appliance.
To relight follow the full lighting instructions given above.
0
MAX
MIN
Diagram 4
6821
CONTROL BOX
LOCKOUT
RESET
BUTTON “C”
CONTROL
THERMOSTAT
KNOB “A”
OVERHEAT CUT-
OFF DEVICE
(sealed systems only)
GAS CONTROL VALVE
POINTER
“B”
GREEN
RED
BBU 56/3e ONLY

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Diagram 4a
CONTROL BOX
CONTROL
THERMOSTAT
KNOB “D”
SETTING
POINT
“G”
GAS
CONTROL
KNOB “F”
PIEZO UNIT
BUTTON “H”
POINTER
“E”
BBU 56/3pp ONLY
6822
Instructions for Use
Lighting the Boiler (BBU 56/3pp ONLY)
Thisappliance isfitted witha flueblockage safetydevice which
will shut down the appliance in the event of abnormal flue
conditions.ThisdeviceisNOTasubstituteforanindependently
mounted Carbon Monoxide detector.
If the boiler shuts down frequently for no apparent reason the
firstthings to be checkedare the chimney andair inlets into the
room. Any problems found must be put right, by a competent
person, before the boiler is used again.
If the burner does go out, wait three minutes before relighting.
For any other reason, wait two minutes before relighting the
burner.
The boiler controls are placed behind the fire front plinth, see
diagram 3.
To remove the plinth, pull it gently forwards until it is free.
Refer to diagram 4a to identify the controls.
Turn off the electrical supply at the mains supply outside the
appliance.
See that all other controls are set for heating. The clock, room
thermostatandprogrammer,iffitted, willbesituatedawayfrom
the unit. See manufacturers’ instructions supplied with these
items.
Turnthecontrolthermostatknob“D”totheOffposition"O",that
is, fully anti-clockwise (“O” to be against the pointer “E”).
Push in and slightly turn gas control knob “F” clockwise until
“” is against its setting point, that is, set to “Off”.
Pushinslightlyandturngascontrolknob“F”anticlockwiseuntil
“” is against its setting point “G”, then push fully in and hold
in. At the same time press and release piezo button “H” until
pilot burner lights.
At initial lighting of the boiler air may be present and several
attempts may be needed to light the pilot. Keep the gas control
knob “F” pushed in whilst operating the ignition button.
When the pilot is alight and stable, keep knob “F” fully pushed
inforabout15secondsthenrelease. Checkthatthepilot isstill
alight.
If the pilot burner fails to stay alight turn gas control knob “F” to
“”, that is, fully clockwise. Wait three minutes. Repeat the
lighting operation, only now keep the gas control knob “F”
pushed in for a little longer than before after the pilot has lit.
NOTE. If the burner does go out, wait three minutes before
relighting. For any other reason, wait two minutes before
relighting the burner.
Pushgascontrolknob“F”inslightlyandturnanticlockwiseuntil
“” is against the setting point “G”.
Note. Ifgascontrolknob“F”isturnedtountil“ ”isagainstthe
settingpoint“G”,asafetylockpreventsitbeingturnedonagain.
No attempt should be made to turn the valve on again until at
least three minutes have elapsed.
Turn on the electrical supply to the unit.
Turn thermostat control knob “D” clockwise until “MAX” is
against the setting point, the main burner will light.
Adjustthethermostattotherequiredsettingbetween“MIN”and
“MAX”. “MAX” is about 82oC.
Check that all external controls are set to your requirements.
Refittheplinthbycarefullylocatingthetopedgeoftheplinthinto
the sliders, then push gently back as far as it will go.
To Turn the Boiler Off
Forshortperiods,turnthermostatcontrolknob“D”anticlockwise
until “O” is against setting point "E". The pilot will stay alight, to
relightthemainburner,turnthermostatcontrolknob“D”clockwise
to the desired setting between “MIN” and “MAX”.
For longer periods, push in slightly gas control knob “F” fully
clockwise until ' ' is against the setting point “G”. Turn
thermostat control knob “D” anticlockwise to “O”.
Switch off the electrical supply the appliance. To relight follow
full lighting operation.

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Lighting the Boiler (45/2 and 56/2 ONLY)
Thisapplianceisfittedwith aflue blockagesafety devicewhich
will shut down the appliance in the event of abnormal flue
conditions.ThisdeviceisNOTasubstituteforanindependently
mounted Carbon Monoxide detector. If the boiler shuts down
frequentlyfor no apparent reason the firstthings to be checked
are the chimney and air inlets into the room.
An additional cause of the flue blockage safety device shutting
thefiredowncouldbethatthefilterinthepilotportofthegastap
has become blocked.
Any problems found must be put right, by a competent person,
before the boiler is used again.
The boiler controls are placed behind the fire front plinth.
To remove the plinth, pull it gently forwards until it is free, see
diagram 3.
Refer to diagram 4b to identify the controls.
Turn off the electrical supply at the mains supply outside the
unit.
Check that all controls are calling for heat.
The clock, room thermostat and programmer, if fitted, will be
remotefromthe appliance, refer to manufacturer’s instructions
supplied with them.
Turn the thermostat control knob “B” to Off position "O", that is,
fully anticlockwise, “O” to be against the pointer.
Pushinandslightlyturngascontrolknob“A”clockwiseuntil' 'is
against its setting point, that is, set to “Off”.
Pushinslightlyandturngascontrolknob“A”anticlockwiseuntil
''isagainstitssettingpoint,thenpushfully inandholdin. At
the same time press and release piezo button “D” until pilot
burner “E” lights. Look at flame through viewing window “F”.
At initial lighting of the boiler air may be present and several
attempts may be needed to light the pilot. Keep the control
knob “A” pushed in whilst operating the ignition button.
When the pilot is alight and stable, keep knob “A” fully pushed
inforabout15secondsthenrelease. Checkthatthepilot isstill
alight, look through window “F”.
If the pilot burner fails to stay alight turn gas control knob “A”
“Off”, that is, fully clockwise. Wait three minutes. Repeat the
lighting operation, only now keep the control knob “A” pushed
in for a little longer than before after the pilot has lit.
NOTE: If the burner does go out, wait three minutes before
relighting. For any other reason, wait two minutes before
relighting the burner.
Push control knob “A” in slightly and turn anticlockwise until
'' is against the setting point.
Note. If gas control knob “A” is turned until ' ' is against the
settingpoint,asafetylockpreventsitbeingturnedonagain. No
attemptshould bemade to turnthe valve onagain untilatleast
three minutes have elapsed.
Turn on the electrical supply to the unit.
Turn the boiler thermostat knob “B” clockwise until “MAX” is
against the setting point, the main burner will light.
Adjust the thermostat to the required setting between “MIN”
and “MAX”. “MAX” is about 82oC (180oF).
Check that all external controls are set to your requirements.
Refit the plinth by carefully locating the top edge of the plinth
into the sliders, then push gently back as far as it will go.
To Turn the Boiler Off
Forshortperiods,turnthermostatcontrolknob“B”anticlockwise
until “O” is against setting point. The pilot will stay alight, to
relight the main burner, turn thermostat control knob “B”
clockwise to the desired setting between “MIN” and “MAX”.
For longer periods, push in slightly gas control knob “A” fully
clockwiseuntil' 'isagainstthesettingpoint. Turnthermostat
control knob “B” anticlockwise to “O”. Switch off the electrical
supply the appliance. To relight follow full lighting operation.
SETTING
POINT
'F' VIEWING
WINDOW
'E' PILOT BURNER
SETTING
POINT
OFF
PILOT/IGNITION
MAIN BURNER
'A'
GAS VALVE
CONTROL KNOB
'D' PIEZO
UNIT BUTTON
'B'
THERMOSTAT
CONTROL KNOB
BBUs 45/2 and 56/2 ONLY Diagram 4b
7997
Instructions for Use

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'E' PILOT BURNER
INSET: Showing a Flue Blockage
Safety Device fitted.
SETTING
POINT 'F' VIEWING
WINDOW
SETTING
POINT
'A'
GAS VALVE
CONTROL
KNOB
'D' PIEZO
UNIT
BUTTON
'B'
THERMOSTAT
CONTROL
KNOB
OFF
PILOT/IGNITION
MAIN BURNER
5342
Instructions for Use
Diagram 5
45, 56, 45R or 56R Back Boiler Unit
WITHOUT a flue blockage safety device
Supplementary Instructions
NOTE: These supplementary instructions are only
applicable where the back boiler unit does not have a flue
blockage safety device and should otherwise be ignored.
As this fire front may be fitted to a Glow-worm 45, 56, 45R
or 56R back boiler unit WITHOUT a flue blockage safety
device,thefollowinginstructions on howtolighttheboiler
should be read and followed in place of those in the main
instructions for use.
To check if a flue blockage safety device is fitted, refer to the
inset in diagram 5, if one is fitted, this supplement MUST be
ignored.
Lighting the Boiler
The boiler controls are placed behind the fire front plinth.
To remove the plinth, pull it gently forwards until it is free.
Refer to diagram 5 to identify the controls.
Turn off the electrical supply at the mains supply outside the
appliance.
Check that all controls are calling for heat.
The clock, room thermostat and programmer, if fitted, will be
away from the unit, see manufacturer’s instructions supplied
with them.
Turn the thermostat control knob “B” to OFF Position "O", that
is, fully anticlockwise, “O” to be against the pointer.
Pushinandslightlyturngascontrolknob“A”clockwiseuntil' 'is
against its setting point, that is, set to “Off”.
Pushinslightlyandturngascontrolknob“A”anticlockwiseuntil
''isagainstitssettingpoint,thenpushfully inandholdin. At
the same time press and release piezo button “D” until pilot
burner “E” lights. Look at flame through viewing window “F”.
At initial lighting of the boiler air may be present and several
attemptsmaybeneededtolightthepilot. Keepthecontrolknob
“A” pushed in whilst operating the ignition button.
When the pilot is alight and stable, keep knob “A” fully pushed
inforabout15secondsthenrelease. Checkthatthepilot isstill
alight, look through window “F”.
If the pilot burner fails to stay alight turn gas control knob “A”
“Off”, that is, fully clockwise. Wait three minutes. Repeat the
lighting operation, only now keep the control knob “A” pushed
in for a little longer than before after the pilot has lit.
NOTE: If the burner does go out, wait three minutes before
relighting. For any other reason, wait two minutes before
relighting the burner.
Pushcontrolknob“A”inslightlyandturnanticlockwiseuntil' '
is against the setting point.
Note. If gas control knob “A” is turned until ' ' is against the
settingpoint,asafetylockpreventsitbeingturnedonagain. No
attempt should be made to turn the valve on again until at least
three minutes have elapsed.
Turn on the electrical supply to the unit.
Turn the boiler thermostat knob “B” clockwise until “MAX” is
against the setting point, the main burner will light.
Adjustthethermostattotherequiredsettingbetween“MIN”and
“MAX”. “MAX” is about 82oC (180oF).
Check that all external controls are set to your requirements.
Refittheplinthbycarefullylocatingthetopedgeoftheplinthinto
the sliders, then push gently back as far as it will go.

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Instructions for Use
Lighting the Fire Front
CAUTION. Ifthe glasspanel orinternal firepartsare damaged
do not light or use the fire front before replacement parts are
fitted.
The fire front is fitted with a flue blockage safety device which
willshutitdownifthereisaproblemwiththechimney. Ifthefire
front shuts down frequently, for no apparent reason the first
thing to be checked are the chimney and the air inlets into the
room. Anadditionalcausecouldbethatthefilter,in thegastap
has become blocked.
Push the control knob fully in and turn it anticlockwise to “1 “
ignition, clicking of the ignition will be heard and the burner will
light.
IMPORTANT. Iftheburnerdoesnotlightwithinthreeseconds,
release the tap knob, wait ten seconds and repeat the lighting
operation.
Keeptheknobpushedinfortenseconds,duringwhichtimethe
ignitionsystemwillcontinuetooperate,indicatedbytheclicking.
Airmaybepresentinthesupplytothefirefrontsothattheinitial
lighting operation may need to be repeated.
To change settings:-
Push in and turn. Refer to diagram 6.
Ifthe burner goesout for anyreason whilst thefire is turnedon,
turn off.
Wait three minutes before relighting as above.
If relighting for any other reason wait two minutes before doing
so.
Itcantakeseveralminutesfor thefueleffectpiecestoglow and
the flame effect to appear.
To turn off, turn the tap fully clockwise to “O” position and
release.
Ifthereisavisiblebuildupofsootonthefueleffectpiecesfollow
the instructions in Section on “Cleaning the Fire”.
Lighting the Fire Front with a Match or Spill
Thisisatemporary measure,tobeused onlyintheeventofthe
failure of the battery or the spark generator.
Make sure that the fire front is cold before starting.
Remove the front casting, see diagram 5.6. Take care as it is
made of cast iron.
Holdalightedspillorlongmatchandpositionitsothattheflame
is over the burner, see diagram 7.
Keepthespillinposition,pushinandturnthegastaptoposition
“1. “ignitionand the burner will light. Keep the knob pushed
for about ten seconds and the burner will stay alight.
If the burner should go out, wait for 3 minutes, then repeat the
above, but now keep the knob pushed in for a little longer.
Once lit operate the gas tap normally.
This is a temporary measure only and the battery should be
replaced or the ignition system repaired as soon as possible.
Cleaning your Fire
WARNING. Thisappliancecontainsmetalparts(components)
and care should be taken when handling and cleaning, with
particular regard to edges.
Any cleaning work must only be carried out when the fire front
is cold.
Under normal circumstances dusting should be enough. An
occasionalwipeoverwithadampclothwillhelpremovemarks.
Do not use an abrasive cleaning powder or liquid. Diagram 6
APPLIANCE OFF
IGNITION POSITION
AND CENTRE
SECTION
FLAME EFFECT
CENTRE SECTION
FLAME EFFECT
WITH OUTER
SECTIONS
FUELBED GLOW
CENTRE AND
OUTER SECTIONS
FLAME EFFECT
WITH FUELBED
GLOW
FULL FLAME
EFFECT WITH
FUELBED GLOW
7581

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Diagram 10
5
31
2
4
3
1
2
2
45
FUEL EFFECT PIECES 1 to 5
FUEL
EFFECT
BASE
4329 S
FUEL EFFECT PIECES LOCATIONS
Instructions for Use
Glass Panel and Internal Fire Front Parts
Remove the canopy as diagram 8. Take care as it is made of
cast iron. Remove the gas control knob, remove the retaining
screws, LH and RH sides, see diagram 19.
Swing the side panels open, see diagram 8.
Remove the glass panel, see diagram 9.
Clean the front glass panel inside and out with a proprietary
ceramic hob cleaner.
Should any soot accumulation become excessive, the fuel
effect pieces should be removed from the fire for cleaning.
Cleaningshouldbecarriedoutin awellventilatedareaorin the
openair,bygentlybrushingwiththepiecesheldawayfromyour
facesothatyouavoidinhalingthedust. Wedonotrecommend
theuse of a normal domestic vacuum cleaner,whichmay blow
dust back into the air.
CAUTION. Ifreplacinguseonlythefueleffectpiecesapproved
for this fire front.
When replacing fit as shown in diagram 10 to 17.
Note. Each fuel effect piece is numbered on its back.
DO NOT USE MORE FUEL EFFECT PIECES
THAN SHOWN.
Diagram 8
7433
5mm 5mm
5171
GLASS
RETAINING
BRACKET
Diagram 9
GLASS
FRONT PANEL
PULL FORWARDS
AND UP
Diagram 7
5094
MATCH OR
SPILL
MATCH
EXTENSION
BURNER

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Diagram 12
Diagram 13
Diagram 14
Diagram 16
Diagram 15
LOCATION
RECESS 1
LOCATION
RECESS 2
LOCATION
LUG 3
LOCATION
RECESS 4
LOCATION
RECESS 5
4331 S
4332 S
4333 S4334 S4335 S
FUEL EFFECT PIECE POSITION 1
FUEL EFFECT PIECE POSITION 2
FUEL EFFECT PIECE POSITION 3
FUEL EFFECT PIECE MUST
SIT ON SUPPORT ANGLE
NOTE:
NOTE: FUEL EFFECT PIECE MUST
SIT ON SUPPORT ANGLE
FUEL EFFECT PIECE MUST
SIT ON SUPPORT ANGLE
NOTE:
FUEL EFFECT PIECE POSITION 5
FUEL EFFECT PIECE POSITION 4
SUPPORT ANGLE FOR
FUEL EFFECT PIECES
1, 2 AND 3 Diagram 11
Left
Side
FUEL
EFFECT
BASE
5088
Fuel Effect Base
seats behind
retaining brackets
NOTE:
Right
Side
FUEL
EFFECT
BASE
(see note)
RETAINING
BRACKETS
Instructions for Use

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Diagram 17
Ensure corners of fuel effect
pieces 4 and 5 are seated on
flat areas of fuel effect pieces
1, 2 and 3
3943 S
COMPLETED FUEL
EFFECT BED
Instructions for Use
Diagram 20
5283
SECURING
SCREW
SPARK
GENERATOR
ELECTRICAL
CONNECTIONS
9V ALKALINE
BATTERY
SECURING
SCREW
IGNITION
LEAD
To Replace the Battery
Thebatterysupplied,should,undernormalusagelastforabout
18 months.
The replacement is 9V and we recommend that it be of the
alkaline type which can be bought locally.
Remove the canopy as diagram 18. Take care as it is made of
cast iron. Remove the gas control knob, remove the securing
screwstop,swingopentherighthandsidepanelasdiagram19.
Fit the battery as shown in diagram 20, make sure that the
terminals are correctly fitted.
Replacement Parts
If replacement parts are required apply to your local supplier.
Please quote the name of the fire front, “Black Ash 3 BBU”, to
be found on the control knob bezel.
The back boiler serial number can be found on the base after
removal of the plinth.
Thefirefrontserialnumbercanbefoundon thechassis,visible
when the front casting is removed.
Thisapplianceisfittedwith aflue blockagesafety devicewhich
will shut down the appliance in the event of abnormal flue
conditions.ThisdeviceisNOTasubstituteforanindependently
mounted Carbon Monoxide detector.
Refittheplinthbycarefullylocatingthetopedgeoftheplinthinto
the sliders, then push gently back as far as it will go.
Diagram 18
CANOPY
LOCATING
PIN
LOCATING HOLE
Diagram 19
7562
UPPER SIDE
RETAINING
SCREW FIBRE
WASHER
R.H. SIDE
PANEL
3947 S
LOCATING PIN
AND HOLE

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1 General
1 General Notes and Information
If this fire front is to be fitted to a Glow-worm Back Boiler
WITHOUT a flue blockage safety device refer to the
Supplementary Installation Instructions in the Instructions for
Use..
General Notes and Information
TheGlow-wormBlackAsh3BBUgasfirefrontistobeusedwith
specially designed Glow-worm 56/3e, 56/3pp, 45/2, 56/2, 45,
56, 45R or 56R Back Boiler Units only.
NOTE: Ifyouarefittingthefirefronttoa45/2or56/2backboiler
unit you will have to use the additional kit No. 459319 supplied
withthefirefront. If youarefittingthefirefronttoanyoftheother
back boiler units listed above, discard the kit as it not required.
This fire front and back boiler are NOT suitable for fitting to a
precast flue.
The fire front is delivered packed in two cardboard cartons,
whichtogethercontainallthepartsnecessaryfortheinstallation
of the fire front.
If the back boiler and fire front are to be installed at the same
please read both sets of instructions before starting.
Wherever possible, all materials, appliances and components
to be used shall comply with the requirements of applicable
British Standards.
Where no British Standards exist, materials and equipment
should be fit for their purpose and of suitable quality and
workmanship.
1.1 Important Notice
This fire front is for use only on G20 gas.
This fire front is fitted with a flue blockage safety device which
will shut down the fire if there is an unacceptable spillage of
products at the draught diverter. If the fire front shuts down
frequentlyfor no apparent reason the firstthings to be checked
are the chimney and the air inlets into the room. An additional
cause could be that the filter, in the gas tap has become
blocked. Anyproblemsfound mustbe putrightby acompetent
person, before the fire front is used again.
Sheet Metal Parts
WARNING. When installing or servicing this fire front care
should be taken when handling metal parts (components) to
avoid any possibility of personal injury.
1.2 Statutory Requirements
The installation of this fire front must be carried out by a
competent person, in accordance with the current issue and
relevant requirements of:-
Manufacturer’s instructions, supplied.
TheGasSafety(InstallationandUse)Regulations,TheBuilding
Regulations,theLocalGasUndertaking,TheBuildingStandards
(Scotland) Regulations (applicable in Scotland), The Health
and Safety at Work Act, Control of Substances Hazardous to
Health,TheElectricityat Work Regulations and any applicable
local regulations.
Detailedrecommendationsarecontainedinthecurrentissueof
the following British Standards and Codes of Practice:-
BS1251, BS5440 Part 1 and 2, BS5871, BS6891, BS7671.
Manufacturer’snotes must notbetaken as overridingstatutory
requirements.
Diagram 1.1
7595
FLAT AREA
FIRE FIXING
FACE
690mm
351mm
339mm
327mm
289mm 327mm
351mm
C
L

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1 General
1.3 Data
Gas connection - from the service cock
Total weight - 49kg
Injector - upper - Bray 18/180
- lower - Bray 18/320
Burner pressure setting
- cold - 13.0mbar 5.2in wg
- hot - 13.2 mbar 5.3in wg
Heat input - gross 6.7kW - 22,750Btu/h
Heat output -nominal 4.4kW - 15,000Btu/h
Fire serial number - on chassis - visible when front
casting is removed
Data label - LH side of lower front baffle.
The fire front burner is lit by means of a battery operated
electronic spark generator unit.
All dimensions are given in millimetres (except as noted).
1.4 Fire Front Location
The back boiler must be correctly positioned in the builder’s
opening as the fire front is located by connection to it.
The back boiler air duct acts as a support for the fire front.
Thetopofthe fire front must be secured to the vertical fire front
fixing wall face. This wall face may be a chimney breast or
surround, see diagram 1, (Instructions for Use).
The fire front flue spigot sticks out into the back boiler flue
collector assembly.
The gas supply is taken from the back boiler gas service cock.
1.5 Clearances
Restrictions must not be placed around the assembled fire
front, see diagram 1, (Instructions for Use).
A shelf or surround of a maximum depth of 150mm may be
fitted, provided clearances are as shown in
diagram 1, (Instructions for Use). However, for every extra
25mm above the fire front the depth of the shelf may be
increased by 25mm.
Combustible furniture or materials must not be placed closer
than 1metre in front of the fire front.

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C
L
2Types of Flue and Installation
Diagram 2.3
Diagram 2.2
INSTALLATION CENTRE LINE
406mm to
460mm
FRONT
OPENING
560mm
to
590mm
PREPARED
BASE
7594
3920s
Note. Refer to Section 2 in the Back Boiler Installation book
before starting.
2.1 With Hearth
A fireproof hearth under the fire front must have the minimum
dimensions as shown in diagram 2.1.
2.2 With Surround
See diagram 2.2. The fire front casing should cover the
opening.
Awider openingwill requireany openingleftto becovered with
a non-combustible finished material, see diagram 2.3.
The surround must have a minimum clear, flat area as shown
in diagram 1, (Instructions for Use). Any projections on the
surround must be outside this area.
Anycombustiblematerial onthe firefrontfixing facearea ofthe
surround must be removed, see diagram 2.3. This area, to the
depth removed, should then be rendered with a sand/cement
mixture.
2.3 Without Surround or Hearth
Thefirefrontfixingwallfacemustbeflatover anareaasshown
in diagram 1, (Instructions for Use). This also shows the
minimum clearances for shelves or projections on the fire front
fixing wall face.
The information in the last two paragraphs of “With Surround”
should now be followed.
Undernoaccountmustcarpetorothercombustiblematerialbe
laiddirectlyunderthefirefront,unlesstheminimumclearances
shown in diagram 2. (Instructions for Use) is achieved.
2.4 Flue
Thebackboilerfluecollectorassemblyacceptsthefirefrontflue
spigot.
Note. Provisionmustbemadeduringtheinstallationoftheback
boiler for the total ventilation requirement for the combined
appliance. See relevant section in the Back Boiler Installation
Instructions.
280 280
220 220
680
560
135
BUILDERS
OPENING
C
L
INSTALLATION
CENTRE LINE
REMOVE
COMBUSTIBLE
MATERIAL FROM
THIS AREA PREPARED
BASE
Diagram 2.1
7440
50mm
2in. MIN.
760mm
30in 340mm
131/2in
1/2in. 12mm
Non-
combustible
material

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3 Fire Front Preperation
7880
FIRE BODY PACK
CASING PACK
Diagram 3.1
COMBUSTION
CHAMBER
BOTTOM PLATE
FLUE SPIGOT
FUEL
EFFECT
BED
FIRE
BODY
ASSEMBLY
WALL
SEALING
PLATE
L.H. SIDE
CASTING
L.H. SIDE
PANEL
LITERATURE L.H. LEG
PLINTH
R.H. LEG
R.H. SIDE
CASTING
R.H. SIDE
PANEL
CANOPY
7598
LOOSE
ITEMS
PACK
FRONT
CASTING

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CONTROL
KNOB
GAS
SUPPLY
PIPE
FIBRE WASHER (2)
SIDE EXTENSION (2)
OLIVE (2)
BATTERY
TUBING
NUT
A
KEY
B
C
D
E
F
G
H
J
Diagram 3.2
SCREW FRONT LEG
M5x30 LEVELLING SCREW
SCREW UPPER WALL
M5x40 MOUNTING
ANCHOR UPPER WALL
NUT MOUNTING
SCREW FRONT LEG
M4x8 FIXING
KNURLED UPPER SIDE
SCREW RETAINING
SCREW SIDE CASTINGS
M5x14 REAR FIXING
7870
3 Fire Front Preperation
SCREW WALL SEALING
No. 10 x 11/2in. PLATE FIXING
WALL WALL SEALING
PLUG PLATE FIXING
SCREW FLUE SPIGOT
No. 8 x 3/8in. FIXING

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3 Fire Front Preperation
Diagram 3.3
FLUE SPIGOT ASSEMBLY
SECURING
SCREW (7)
J
7591
3.1 Unpacking
The fire front is delivered in two packs, one contains the body
assembly. The other contains the fire front castings, and loose
itemspack. Referto diagrams3.1and 3.2.toidentify theparts.
To unpack carton 1, lift out the top fitting containing the fire
spigot and combustion chamber bottom plate, lift out the
cardboard front fitting, the supply tube pack and the two boxes
containing the fuel effect pieces.
Lifttheoutercartoncleartoleavethefirefrontsittinginthebase
tray.
To unpack carton 2, lift out the cardboard tray containing the
plinth and side panels. Lift out the loose items pack, legs box
and canopy. Remove the internal cardboard fitting and lift out
the lower front and side castings.
Put these items on one side until required. Check contents of
loose items pack against list.
Remove the glass front panel, see diagram 9. (Instructions for
Use).
Itissuggestedthatthesideextensions,fromthecastingspack,
be fitted at this time to the left and right hand side panels.
NOTE: These are a slide fit onto the louvres.
3.2 Flue Spigot Assembly
Note. This is marked “Homeglow BBU”
Leave the fire front sitting in the base tray.
Secure the spigot assembly to the fire front back with the self
taping screws provided, in the loose items pack, see diagram
3.3.
3.3 Battery
Remove the fire front from the base tray.
Take the battery from the fittings pack and fit as shown in
diagram20,(Instructions forUse),makesurethattheterminals
are correctly fitted.

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BACK
BOILER
AIR
DUCT
*'C' = Distance from fire fixing wall face to datums
on back boiler air duct. This represents the
length of pipe that requires cutting off.
'P'
*'C'
*'C'
GAS FIRE
SUPPLY TUBE
FIRE FIXING
WALL FACE
3.4 Gas Supply to Fire Front (Fitting to 56/3e
and 56/3pp Back Boiler Units ONLY)
Check that gas service cock on the boiler is in the Off position,
see diagram 3.4.
Theinletsupplytubeispackedwiththefirefrontandwillrequire
cutting to fit the gas service cock on the back boiler unit.
Removeglasspanel,connectinletsupplytubetobulkhead,see
diagram 4.9. To measure the correct length of gas supply
tubing, the fire front will have to be temporarily positioned
againstthe fire fixing wall face, see diagram 3.5. Mark position
and cut, deburr the tube end inside and out. Replace glass
panel.
3.5 Gas Supply to Fire Front (Fitting to 45/2
and 56/2 Back Boiler Units ONLY)
Check that gas service cock on the boiler is in the Off position,
see diagram 3.4.
The inlet supply tube is packed with the fire front plinth in the
loose items pack.
Thissupplytubemayneedtobecut,attheplainend,dependent
on the model and position of the back boiler in the opening.
Measurethedistance“C”, seediagram3.6, fromthefront mark
“P” on the air duct to the fire front fixing wall face.
Use a straight edge across the opening.
Shortentheplainendofthegassupplytubebythedistance“C”.
No shortening is required when “P” is level with the fire front
fixing wall face, “C” being zero.
The maximum distance for “C” will be 67mm.
Deburr the tube end inside and out.
3 Fire Front Preparation
Diagram 3.5
7163
BACK
BOILER
AIR
DUCT
GAS FIRE
SUPPLY TUBE
FIRE FIXING
WALL FACE
GAS SERVICE
COCK
UNION
NUT
OLIVE
56/3e and 56/3pp
Back Boiler Units ONLY)
45/2 and 56/2
Back Boiler Units ONLY) Diagram 3.6
Diagram 3.4
BACK
BOILER
ONLY 'ON'
TURNED
FULLY
CLOCKWISE
90˚
180˚
'OFF'
TURN FULLY
ANTI-
CLOCKWISE
BACK
BOILER &
FIRE FRONT
'ON' TURNED
TO MID
POSITION
7595

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GF
MARK
FRONT
FIXING
HOLES
SPIGOT
FLUE
COLLECTOR
ASSEMBLY
FIRE FRONT
Diagram 4.2
Diagram 4.3
7868
7593
MOUNTING
BRACKET (2)
SECURING
SCREW (2)
ANCHOR
NUT (2)
SECURING
SCREW (2)
C
D
C
BACK
BOILER
AIR DUCT
FLUE
SPIGOT DUCT
7867
Diagram 4.1
FIRE FIXING
WALL FACE
56/3e and 56/3pp
Back Boiler Units ONLY)
4.1 Positioning the Fire Front (Fitting to 56/3e
and 56/3pp Back Boiler Units ONLY)
Place the wall sealing plate onto the back boiler air duct, mark
the fixing holes, remove the plate and drill the holes to suit the
plugs and screws provided, in the supply tube pack, leave
sufficientscrewproudtoacceptthewallsealingplatekeyholes,
see diagram 4.1.
Fit the wall sealing plate and tighten the screws, making sure
that the “wings” are flush with the fire fixing wall face, see
diagram 4.1.
Place the fire front onto the back boiler air duct, check that the
firefrontfluespigotiscentralinthefluecollectorassembly,push
into contact with the fire front fixing wall face.
Mark the fire front fixing points through the mounting bracket
holes, at the top, see diagram 4.2.
Pull the fire front forwards and remove.
Drillthe fire frontfixingwall face, usinga 10mm masonry drillto
a minimum depth of 40mm to accept the anchor nuts and
screws, supplied in the loose items pack.
Place anchor nuts and screws into holes, screw up, but leave
sufficient thread proud the accept the fire front.
Note. If the fire front fixing face is not of a solid construction, to
a minimum depth of 40mm, that is, hollow brick or metal an
alternative and rigid form of fastening must be used and extra
care taken.
4.2 Securing (Fitting to 56/3e and 56/3pp Back
Boiler Units ONLY)
Refer to diagrams 4.2 and 4.3.
Offer the fire front up to engage fire front spigot, position
mounting bracket holes over the screws in fire front fixing wall
face.
Push back to locate flue spigot into flue spigot duct, lift slightly
to engage mounting bracket onto screws.
Tighten up securing screws.
4 Installation