Glowworm ASCOT 1.4S Release note

206416.05.93
COSHH
Installation,,'& -
Serrzicing{nstru ctiorfsr
ffiS"pd,t+y;tths,thregs;9.$f
ASCOT
1.4S
Instantantaneous
Multipoint
Balanced
Flue
Water
Heater
Number
52
Technical
Services
Departnenl:
Telephone:
Belper
(0725)
g2gl00

410mm
(16$
in)
; HEATER i
'-------
-
-l---------'
I
I
WATER
INLET
CONN
ECTION
15mm
O.D.
655
mm
(2ffiin)
WATER
OUTLET
CONNECTION
15mm
O.D.
0 oo,coNNEcloN
15mm
o.D. q WATER
CONNECTTONS
l'r
c\t
<t Diagram
1
lbu mm
(s*
in)
305
mm
(
12in)
q GASCONNECTION
(1i€in)
\E il r,,
1 General
The Glorv-rvorm Ascot 1.4Shas beendesignedfor
surface
mounling and will supply hot waterdirecr
to a bath, basin,kitchen sink and, via a suiuble
mixing valve to a shower.
Important: This heateri.: for use on NaruralGas
only and must not be used ;rittr any orher
gas.
1.1Installation
Requirements
Theinsmllation
of thiswarer
hearermusr
bein
accordancewith the relevanI
requirements
of the
current
issue
of the Gas
Safery
(Insullarion
and
Use)Regulations,
TheBuilding
Reguladons,
Local
Water
CompanyBye-laws
andThe Buildinq
Srandards
(Scotland)
Regulations.
It is theLaw thatALL gas
appliances
areinsnlled
in accordancewith theabove
regularions.
Failureto installthehearer
correctlycouldleadto
prosecudon.
It is in yourown inter-esrand
frat of
safetyto ensurethar
thelaw is compliedwirh.
Theinstallation
shouldalso
be in accordance
wirh
anyrelevant requirements
of theLocalAuthoriry
andtherelevant
requiremenB
of thecurrenlissue
of thefollowing
British
Srandardcodes
of pracrice,
85689l,
855546,856700
andBS5440
PartsI
and2.
Addidonally
it is essential
thatthis
heater
is
assembled
and
installedstrictly
in accordance
withthese
instructions.
IvlaximumWaterPressure
l3bar(188.5Ibf/in:)
1.2
Ratings
Nominal
Input
Nominal
Output
Injector
Burner
Pressure
lVeight
30.27kw
(i030008tu/h)
22.7k\Y
(775008tu/h)
Aa
16.5mbar
(6.6in
rr'g)
?iko fil lhl
Nominal
burner pressureis 16.5mbar
(6.6inti'e)
at2Ombar
(8inwg) inlet
pressure.
Dueto
variations
in gas
supply
and
heater
tolerances
the
measured
pressuremayvarybetrvcen
l7.5mbarand
15.5mbar
(7.0
and6.2in
wg).
1.3
Gas
Supply
In addition
to all other
demandsthe
metcrmust
pass
the
followingNatural
Gas:
2.87m3]h
of 38mJ/m3gas
(103ft3/h
of l0008tdfLr
The
meter
governor
should
ensurea consnnt
outlct
pressureof 2Ombar
(8in
wg).

1.4WashingMachinesandShowers
Thisheateris capable
of use
with washing
machines
and
showersbutit will involveadditional
plumbing
requirements.
Forfull derails
please
referto theenclosedsheet,or
contact
HepworthHeating
Ltd.
1.5
SheetMetal
Parts
When
installingor servicing
this
heater,careshould
be raken
whenhandling
sheet
meul parts
to avoid
any
possibility
of personal
injury.
2.1
Siting
Theheatershouldbe sited
suchthat
theminimum
internalclearancesare
provided
asshownin
diagram
2.
Thebalanced flue terminal
mustnotbesited
where
thereis a possibility
of theproducts
of combustion
re-entering
the
heater
or adjacent
doorsor windows.
TheminimumaccepLable
spacingsfromthererminal
to obstructions and
vendlation
openingsare
specifiedin theTerminalPosirioning
Table.
Where
thcterminal
is less
than
2metres,
(6fr6in),
above
lhelevel
of anyground,
balcony,
flatroof
and
thelike,to whichanyperson
has
access
and
which
adjoinsthewall in which
the
terminal
is
situated,
a durablelerminal
guard
must
be firted.
Guards
areavailablefromTheTower
Flue
Components
Ltd.,telephone
Tonbridge
351555
quoting
reference
"C orange",
or fromlvlessrs
Quinnell,
Barrett.
and
Quinnell
Lrd.,
884,Old
Kenr
Road,London,
SEl5, quoting
reference
"Type
P4".
If theterminalis fiued wirhin
850mm
(34in)
of a
plastic
or painted
gurter
or 450mm
(18in)
of
painted
eaves,an
aluminium
shield
of a[ leasr.
750mm,
(30in),
longshould
be fiued
ro rhe
underside
of the
gutter
or painted
eaves.
2.3
lnstallation
in ConfinedSpaces
The heater
may be fitted inro confined
spaces,
for
exampleunderrvork surfaces,cupboards
and the
like,
provided
that the minimum insmllarion
c{earancesare available. Cupboards
and the like
shouldbe deepenoughto enable
the case
front to
be withdrawn.
High and low levcl air ventsmust be fitted in the
cupboard
or compartmcnt,the ventilation
areamust
bc as shorvnin the Air Vent Table.
Note: Both high and low levelvents
musr
communicate
with the sameroom, or internal
space,
or must both be on the samewall to outside
air.
The hcater
may be mounted
dircctly
onro
combustiblewallsor walls otherwiselikcly to be
affected
by heatwirhout specific precaur.ions,
subjectto local regularions.
:,i'i':t
@
Eo
8@
N
q
Recommended
MinimumClearances
fromWalls,
Ceiling,Floor,
Cupboard,Worktopsetc. mm in
L.ti.and
R.ll.side
ofcasing 25 1
Top
ot casing 40 1
+
Bottomofcasing 155 6+
Frontof heatr.)r
(froma 610 24
permanent
sur{ace)
t1
a
D
Diagram
2
AIRVENT
AREATABLEFOR
COMPARTMENT
INSTALLATIONS
POSITION
OF
AIR
VENTS
AIR
VENTAREAS
AIRFROM
ROOM
OR
INTERNAL
5HAUtr
AIR
DIRECT
FROM
OUTSIDE
^^2 in2 cm2 in2
HIGH
VENT 273 42 rJo 21
LOW
VENT 273 42 tJo 21
20641e

2.5
TimberFrame
Buildings
If theheateris to be fiued
intoa building
of
timber
frameconstruction,
advicemustbe sought
fromthelocal
gas
underraking
or Hepworth
Heatine
Ltd.
TERMINALPOSITION
MINIMUMSPACING mm (in)
1FROMVERTICALDRAIN PIPESANDSOIL
PIPES IJ (3)
2 DIRECTLYBELOWAN
OPENAELE
WINDOW,
AIR
VENT,
OR
ANY
OTHER
VENTILATION
OPENING
3 BELOWGUTTERING, DRAINPIPESORSOIL
PIPES
4 BELOW
EAVES
5 . ABOVE ADJACENT
GROUND
ORBALCONY
LEVEL
300 (12)
1
6
c.|J
r-
BELOWA BALCONY
FROM
INTERNALOR EXTERNAL
CORNERS
FROM
A SURFACEFACING
A TERMINAL
FROM
A TERMIN,AL FACING
A TERMINAL
600 (24)
3.1
Preparing
theSite
Position
thetemplate
provided
on rhe
wall in rhe
required
heater
position
andmarklocation
of the
balancedflue hole. Ensure
that
rheminimum
clearances
lor installation
areavailable,
see
diagram2.
Cutthehole,
350mm
wide
x 236mmhigh
in rhe
wall to accept
the liner, seediagram
3.
ivlalie
good any plasterri'orknecessarl'at this srage.
When dr,v,select
the liner rvith the turnedflangeat
one end
and pushit into thecavity until the flange
is flush to the wall.
Reposition
the templateon the wall in line with the
wall opening and mark positions
for the two frxing
screws
at r.he baseof the appliance.
Drill and plr.:.'the fixing holessuirable
for
No.l0x50mmlons woodscrews.
PREPARED
HOLE
INTHE WALL
--r-
t^^^
t/<hmm
l(s*in)
I
V
(16
in) TTOM
LES FIXING
V
125
mm
70
mm
(21in)
Diagram
3
c{
v(aif in)
FRONT
CASE
CONTROLS
TRAY
o
ct
+
CASING
SECURING
SCREWS
Diagram
4

3.2
Preparing
the Applianbe
Thecontrols
lrayshould
beremoved
by pulling
it
forwardand disengaging.
Refit asrequiredafter
insullation,see
diagram
4.
Undothetwo casingsecuring
screws,
diagram
4,
whichrerain
thefront casing,
ease
thecaseforward
at thebottom
and
push
upwarduntilclearof the
fixingbar at thetop of theappliance,thefront
casing
cannowbe removed.
Remove
the flue hoodby releasing
thehookand
bols from the waterpipes
on theheating
bodyand
undoing
the two screwsat the backof the flue
hood. Care should
be takento avoid
knocking
or
distorting
the top of the heating
body,see
diagram5.
Removethebacking strip
fromthe
selfadhesive
seal
provided
andfit it aroundthe
spigot
on the
backo[ theheater
with the wideadhesive
edge
to
the
backof thecase, see
diagram
6.
3.3
Fittingthe Appliance Flue
Set
Note: The sandard flue setcovers
wall thicknesses
from 100mmto 380mm
(4into 15in). For wall
thicknessesup to 533mm
(2lin) anoptional
flueset
is availableto order.
At this
stage,
accountmust
be taken
of the
wall
thickness.
If lessthan230mm
(9in)
theduct
and
linerswill have
to becutto suit. The
pars
afiected
aretheterminalassembly
"A", diagram
6,
theout.letduct
"F" andthewall linersleeve "G".
Thesmndard
flue setcan
becut to accommodate
walls
downto i00mm (4in). Measurethewall
thicknessandsubuactfrom230mm
(9in)
to give
theamounl.to be removed
from fre mating
endsof
componens
A,F andG.
lr{arkout and carefully
cut the
required
parts,for
wall thicknesses
of 230mm
(9in)
to 380mm
(l5in)
thesundardflueset requiresno modification.
Fix thethreeslottedstraps
"D" to theterminal
wall
liner
"A" by inserting
themover
the
lugson the
terminal.Bend
bottom
lug flat then
bend
three
remaininglugs
so that strapsareheldfirmly in
posiLion.
WARNING: TAKE EXTREMECARE TO AVOID
LACERATINGYOURHANDSWFIEN BENDING
TFIELUGS.
Note:
For wall thicknesses
greater
than230mm
(9in) the slottedsuaps
need
be fittedonly to the
lugs
nearest
theheater endof theterminal
assembly.The lugsfurtherinto theterminal
asscmblyarefor useonly when
be fluepars havc
bcen
cut to suita wall lcss
than
230mm
(9in)
thick.
Fit thewall plate
"B" over
theterminalassembly
ensuringthat
the
plain
side
facesoutward.
FLUEHOOD
sEcuRrNG
scREW(2)-
HOOKBOLT(2)
Diagram
i.l;{::i 1
r

Fit the terminalassembly
into the wall from the
outside
ensuring
thatthe slotted
strap
on thelong
sideis uppermost.
Mount the appliance
on the wall by fitting the top
slottedsuap
to thetoplug on theappliance
case.
Thisis achieved
by pulling
thetopsrrap
rightand
tilting
theappliance
slightly
from theborrom,
permanently
secure
the strap
to the lug by bending
thelug forward.
Fit No10x50mmwoodscrews
to thebottom
of the
appliance
andtighten.
Fit the
two remaining
slotted
straps
overthelugs
on the
appliancecase
and
secure
permanently
and
cutsurplus
length
off all thesrraps.
Tape
thewall liners
toget}er
from inside.
Slidethe
stainless
steelducr
"F" inro themadns
seclion
asfar aspossible.
Tapeducts
together.
Replace
theflue hood
andsecure
usingtwo rear
fixing screws
andhookboltsover body warer
pipes
CAREMUST BE TAKEN NOT TO DAMAGE
TIIE HEATING BODY.
Note: The flue setcanbe insulled from insidethe
buildingas
follows:
a) Proceed
to 3.3 above
b) If necessarycut the ducts,see
puagraph
2
of 3.3.
c) Attachtheslotted
suaps
"D" see paragraph4
of 3.3.
d) FirmlyatLacha length of stout
suingor ropeto
theholeprovided in thebottom
centre
fin on
theterminal.
e) Remove
thewall liner.
,) Feed
terminalassembly
throughthe wall to
theouside.
g) Feedthe
suing
throughthe
wall plate
"B"
ensuringthattlre
plate
is he correct
way round,
and
then
guide
the
plate
through
the
wall and
overthe
terminal.
h) Feedthestringthroughthewall linerandrefit
the
]iner
to the wall.
i) Locateterminalinto hole
and
pull assembly
back
intohole
and
retainwith the
string.
j) Pass
suingthrough
applianceandmount,
refer
to above,and then remove thestring.
k) Nowcontinue
asabove.
3.4WaterConnections
Thewater servicemust
be in accordance
with the
current
issue
o[856700.
Theheater'swater
connectionsareby 15mm o.d
copper
tails. Theoutlet
railis fitted
in
manufacturebut theinletrailand
water
service
cockare suppliedloose. These
should
be fitted as
shown
in diagram7, give
dueattention
to the
orienLationof theservicecock.
Thecold
water
connection
can
beeither
fromthe
mainsor a cistem.
A TERMINAL
ASSEMBLY
B OUTER
WALL
PLATE
C OUTER CASE
D FIXING
STRAPS
E FLUE
HOOD
F OUTLET
DUCT
G WALLLINER
SLEEVE
H SELF-ADHESIVE
SEAL

Theminimum
waterpressure
required
to fully open
the
gasvalve
is 2.29m
(?.5f0.
However,
where
thewater
pressure
is limited,
for
example
on
a
cistern
supply,
then
for
practical
purposes
a head
of 3.29m
(l0ft10in)
is required
witlrnormalpiping
to givea waterflow rate o[
T.llitres/m
(l.6gallmin)
anda temperatureriseof
4aoC(80oD.
The head
of wateris measured
vertically
between
thelevel of the waterin the cisternandthe level
of the highesthot waterdrawoff tap. For direct
mains
connections,
(subject
to local
water
company
regulations),
tie sizemaybe 15mmcoppertubeto
BS287lwhere
sufficient
pressure
is available. If
theheater
is fitted to a mains
supply
which is
subjectto variable high pressures,
it is
recommended
that
a water
governor
is fittedto the
heaterinletpipe. A suitable governor
is the
Dereve
010521o4,availablefrom Dereve
flow Conuols)
Ltd.,ParkLane,Handsworth,
Birmingham,.B21
8LE telephone[phone]. If a warer
pressure
limiter
is requiredthismaybeconnecredintorhe
waterpipework
adjacent
to the heater
or maybe
fitted
on theheater,
after
removal
of the
venturi
cap,seediagram
10.
If theinlettail is ro be soldered
into rhe
supply
system
it is recommended
that
thewater
service
cock
beremovedwhilst
maling the
joinr. Thisis
to eliminate
therisk of damagingrhe
sealin the
service
cock.
Flush
out all foreign marter
from the
supply
pipe
BEFORE
connecting
to r.he heater.
Connectthehoc water
systemto thewater
outlet
tail,seediagram
11. Check
rharthere
areno water
leals
afterconnection.
Ensure
that
all theair is expelledfron;ihervater
system
by tunringon ALL hot warer
dra,r,off raps
and
thenturning
them
off in sequence,
snrting
with
the
draw
off tap at thelowestlevel.
Refittheoutercase.
3.5
Gas
Connections
Thegas supplyconnecrion
is made
by rhei5mm
o.dcopper uil pipe. This is supplied
loosewirh
thegas
servicecock. They should
be assembledas
shown
in diagram
9.
When
making
the
connectionit is important
rhar:
a) The gas
inlet
pipe
musrpass
above
rhe
thermocouple
andunion
nut.
b) The servicecockbe removed
duringrhe
soldering
process
if rheinletrailis soldered
into thesupply
sysrem.This is ro eliminare
therisk of damaging
rhe
service
cock
seal.
c) Thepipes
are
blownrhrough
beforeconnccrion
to prevent
forcign
matter
entcring
theheatcr.
Thesizeof a straightunrestricted
gas
supply
from
the
meterto theheater shouldbeasfollows:
Disunce
frommeter Gas
supplyoutlet
to heater
outsidediameter l5mm
22mm
Consultthe local
gas
company
Thesesizes
arefor the heater
only anddo not take
account
of anyother
gas
appliances
whichmaybe
connected
to the same
gasservice pipework.
0-3m
(0-10ft)
3-20rn
(10-65f0
20m
(65ft)and
above
OFF
POSITION
(Turn
90"
for
on position)
NINLET
WATER
CONNECTION Diagram7
WATER
SERVICE
COCK
GAS
INLET
CONNECTION
N
l-. Diagram
B
GAS
PRESSURE
TESTPOINT
GAS
INLET
TAIL
PIPE
GASSERVICE
COCK
(Shown
in
'OFF'
position)
206416

4.1
Preliminary
Checks
Remove
front
case
and
conuols
uay. Turn the
gas
"Ofl', turnwateron and
checkfor watcrleakage
around
thcheater.
Relit thcoutcr
cascand
sccurc.
Turnthcgas
servicc
cock
"On". It is on when
the
screw
driverslot is in linc with thecock. It is otf
whenthescrewdriver
slotis acrosstheaxis
of thc
cock,
secdiagram8.
Turn
thc
watcr
supply
on in a similar
manncr
the
gas
supply,sccdiagram
7 andchcck that
waterthrottlc
is not fully closcd,
sec
diagram
Opcn
all hotwatcrdrawoff taps
individually
wait until thc waterflorvsfrccly. Closc
each
off taoin turn.
lrl
the
10.
and
draw
4.2
To Lightthe Pilot
Turnthc
gas
supply
on. Fully
depress
the
"grs on"
button
I andoperate
thespark
ignitionbutton,Arz
untilthc
pilotis lit, seediagram9.
Thc
pilot,
which
is situatcd
to thclcft hand sidc
oi
thc
hcater
may
bc sccn
throughthe
pilot
vicrving
window,
sec
diagram
9.
Kccpthc "gas on" buLton
I pressedin for l0
scconds
thcn
rcleasc.If thcpilot gocs out purgc
thcsystcmand
rcpcatthc
opcration.
4.3Adjustmentof Water Temperature
Opcn thc HOT water draw-off up furrhcst
from thc
hcatcr. Ensurc
thatthe "SummerAVinter"
control
is
in thc "Wintcr" position, sccdiagram
9. Adjustthc
watcr
[hrottlcto givc thc rcquircd
\viltcr
ratc,
scc
tliagrarn
i0 (turn anti-clockrviscto opcn).
A watcrratc ol 6.7litrc/rnin
(i.5gal/rnin)r \ii:h is 9
scconds
to fill a I litrc contirincr,
(5 scconcjs
;o t'ill
a I pint
contlincr),
will givc a [cmpcraturcriscol.
rbout 50"C,
(90"R.
Ar watcrratcs
bclorv
6.7 litrc/rnin
(1.5 g:rl/rnin)
thc
\\':.ltcrratc will proportion thc sas ratc to a
controllcd
lcmpcralurc
riscsclcctcd
by'thc
"SumrncrAVintcr"
control.
Ahcrnutivcly
it may bc dcsirablc to sct thc \\,atcr to
lu
highcrflow ratc which rvill rc.sulIin lorvcr
rvirtcr
tcn)pcrilturc.,i
dcpcndingupon thc llo\\' sr'tilt thc
tilp. This allorvs watcr to bc tlrarvrtot't'
l'rom thc
butlr
t:.rp
at a suiublc.
[ctnpcri.lLurc
lbr bitthins.
ll'highcr tcrnpcrilturcs
rrc rcquircd
at thc othcr
orrtlcts
thc tcrllpcraturc
ciln bc controll'--d
bv
grlrlualll'
closirt{ thc out['t tap until a tcrl]pcri.lturc
risc ol' about -iO"C
(90"F) i.sachicvcd.
'\n1' lirrthcrrctluction
in Ihc rr'utcr rat.c
*'ill rcsult
irrtlrc tr'rnpcrlturcbcingcontrollctl
b1'thc hcutcr.
4.4 SummerMinter
Control
Thc SummcrAVintcr
control
is intcndcd
to rcducc
the eflcct
of scasonal
variationin u'atcr supply'
tcmpcrilturc.
In thc "\\'intcr" position
thc hcltcr
clclivcrs
a controllcti
tctnpcraturc
riscol abouL
50''C
(90"F)
and in thc "Sumrncr"
pt-rsition
a controllc'il
tcmpcri.rturc
ri.scof about
-l-l"C (80'F).
It shoulri
bc notctl lhat *ittcr llorv ratcsitbovc 6.7
litrc/min
(1.5gal/rnin):rc outsiclc
thc ranScof thc
controllcd
tcmpcritturc
tacilit,vand thusrcndcr
thc
"surnrncrAVintcr"
control
incfl'cctivc.
In usc,
thc controlshould
bc sct at thc "\\'intcr"
positionin thc s'intcr
and spring
rnonthsttrtd
sctItt
thc "Summcr"position
in thc sunrlncr
antlauttlllln
rnonths.
Note: lt is importltnt
thrt tluring
lhc sutl]ttlt-r
rnonth.Jthc control
is turnctl
ttl "Surnrncr"
llosititlrr
i,l:ioutlct tctltpcrilturcs
in crccss tll' (10''C
(lJ(I'F)
rnuy
rcsult
in scllc lbrrttation
lttltl
rctlucctl
cll'icicncy
ol' thc he-iltcr.
P
ILOT
VIEWING
WINDOW
SU
MMER/
WINTER
CONTROL
//rGNlTlON
I cot
ot
O
orr
T Diagram
9
WATERTHROTTLE
ADJUSTING
SCREW
(Turn
anti-clockwise
toopen)
N
VENTURI
WATER
TEMPERATURE
ADJUSTMENT I-\i^^zrm 1A
ulo9rqrrl lv
zuo{ |o

4.5Slow lgnitionDevice
When thc pilot is lit and the watcr throttle
adjusted
to the desired
flow ratc it may bc necessaryto
adjust
thc slow ignitiondevice.
This is donc by adjusting
the screwon thc
diaphragmhousing,
secdiagram
ll. Turn IN to
dclal'
OUT to advanccthe ignition.
Check
that
after
adjustment
the ignitionis Smooth
'
but rr'ithout
unducdelay.
4.6Checkingthe BurnerPressure
Whenignitionadjustrnentshave
been
completcd
atncha pressure
gauge
to the
pressure
tcst
point
afterremovingthe
scrcwandsealing
ring,
see
diagram
I
l.
Lightthc
pilot
and
fullyopcn
the
HOTdrarv-off
tapfurthcst
fromthchcatcr. Chccktheburncr
prcssurc
acainstthe
valucs
givcn
in Section 1.3.
4.7CheckingSummer/WinterControl
The SummerfiVintcr control may be checkcd for
correct
opcraLion
as follorvs.
Setthe control
in the
"Winter" position. Incrcasc
u'atcr
fio*, until maximum
burncr
prcssurc
is
obLaincd,16.5mbar
(6.6in
wg) nominal.
Gradually
reduce
watcr flow until burnerpressurc
just bcgins
to fall, that
is theprcssure
is bctu'ccn
maximurn
and 15.Smbar
(6.3in
u,g).
Without
alteringhe *'atcrflow, tum control[o
"Surnmcr"
position. Thc
burncr
prcssure
should
drop
b1'
about
2.5mbar
(lin rvg)whenthc srvitch
is
functioning
corrcctli,and thc grs inlct prcssurcis
corrcc
t.
Rcscuing
thccontrolto thc
"Wintcr"
position*ill
nol rcturnprcssurc
to thc original
valuc. To rcpcat
thc tcsr.
sct up as in Scction
4.6.
Turn ol-l'thc HOT \\,atcr
[lrp. Rcrnovc
prcssrlrc
girusc,
rcplaccscaling
rinq ancl
scrc\\'.
Rcfit controls
tral'.
4.8InstructtheUser
Irnportunt.Inslruct
thc uscr
in thc corrcct
andsafc
opcration
oi thc hcatcr.
Hlntl thc Instruct.ions
for Usc to thc uscr
for thcir
rctcntion.
Lcavcthc InstlllationInstructions with thc uscr
for
uscduring[uturcscrvicc
calls.
SLOW
IGNITION
DEVICE
SETTINGSCREW
PRESSURE
TESTPOINT
Diagram
11
zuo{ I o

Theheatershould
be serviced
regularly
by a
competent
person
to ensurelonglife andefficient
use. Fornormaldomcstic
installations
servicing
at
annualintervals
is recommendcd.
Belorc
commencinga service,turnoff the
gas
and
watersupplies
at theservice
cocks,
see
diagrams
7
and8 and
drainthewater
from theappliance
if
necessaryby rcmoval
of thc drain
screw
in the
water
servicecock,
seediagram7 andopening
one
of the hot watertaps,
Oncompletionof theservicethedrainscrew
must
bereplaced
andtheappliance checked
for gas and
walersoundness.
5.1
Burner
Remove
theburner
asdescribedin Section
6.2.
After
removaltheburnershouldbe inspectedfor
damage
and
anydeposits
removedwith a soft brush
or a vacuum
cleaner.
5.2
PilotAssembly
Remove
the
pilot assemblyasdescribedin
Section6.5.
Thethermocouple
should
beremoved asin
Secdon6.6
itscondition
inspected.
Replace
if
necessary.
Inspecttheelecrrodefor damage.
Replaceif
necessary,seeSection
6.7.
The
pilotburner
should
be pulled
off andinspected
for damageandanydepositscleanedaway
with a
softbrush. Inspect
theinjectorfor depositsor
blockage
which
should
becarefullyremovedand
theorificesblownclear,seediagram12.
Check
the
pilot fiiter,see
Section
6.9.
Afterreassembly
ensure
thattheelecuode
to pilot
dimension
is asshown
in diagram 13
andthatthe
pilotflame
strikes
thethermocouple.
Guidedimensions
are
given
in diagram13.
5.3
Body
Fornormalannualservicethebodyneednotbe
removed
but shouldbe examinedandall deoosis
formedbrushed
fromtheheatexchanger.
Remove
theflue hood
asdescribed
in Section 6.3.
Pcriodically
it maybe necessaryto removethe
body,
seeSection6.4,for descaling,the
time
interval
for thiswork wiil be determincdlargely by
the
amountof usageandthehardness
of the
water.
5.4 DiaphragmAssembly
and Automatic
Gas
Valve
Annualservicingof thiscomponentwill normally
includeonly thecheckingof the
diaphragm
and
regreasing
of the
gas
valve
spindle.
BURNER
--l-_----
Thespindle
maybe removedafter
having
retno\'!'d
the
diaphragm
as
Section
6. DONOTUSE
GRIPS
when
pulling
the
gas
valve
spindle
outof is
location.Inspect
thespindlc
for sulightncss
and
for score
marks. If in any
doubt
rcncw
thisitcrtr.
Clcan
the
spindlc
carcfully
witha softCLEAN
cloth
and
apply
siliconc
grclsc,Dorv
Cornirts
l1I
or equal,
to thespindlc.
Replace
gasvalvespindlc
ensuring
that
it moves
frccly. If it docs
not,
examineautomatic
valve
spindle
scals
for wear.
On completion
of servicing
the
appliance
shotrld
bc
rc-commissioned
asSection
4 to check
theopcrrttion
of thesummer/wintcr
switch,
watertemperaturc
ltnd
flow rate,
gaspressureand
thclike.
F\i^^.am l2
uldvrqrll l9
10

Removalandreplacement
of parts
must.be carried
outby a competent
person.
Beforeremoving
anygas carryingcomponent,
turn
off theheaterat thegas
service
cock.
After completingthe replacement of gas
carrying
components,
a]waystestfor gassoundness
with a
suitable
leak
detectionfluid.
6.1
Front
Case
Remove
controlstray
by pulling forwardsand
disengaging,seediagram
14.
Unscrewthe
two securing
screwson thelugsat the
bottomof thefront.
case.
Pull bottom
of case forwardandlift the case
up*'ardsto clear the retaining
brackets
on the top
of themaincase.
The front case can now be pull forward
and
removed.
Reversethis
procedure
to refit.frontcaseensuring
that.
caseseal
is in good
conditionand
seated
correctly.
6.2Burner
Remor,e
lhe
case
asSection6.1.
Disconnecttheignition
lead
from thespark
electrode,
seediagram15.
Removethesealing
plates
held
in place by t*,oM5
screws.When replacing
theplates careshould
be
taken
to ensurethattheseal
is correctJy
made.
\\/ithdraw
thermocouple
sufficientlyto clear
assembly
by pulling downwards.This
is best
achieved
by pulling
thethermocouple from
undersideof base.
Disconnect
the
piiot
supplytube.
Remor.e
thecentiallvl5screw
securing
the
deflector
plate,
remove
deflector
plate
and
pilotassembly.
Remove
thetwo M5 screwssecuringtheburner
feedtube
flange
to theuansferelbow,see
diagram16. RemovetheM5 scre*, in base,
withdraw
burner
andburner feed
tube
complete.
Separatetheburnerfeedtubeand
burner
by
rcmoving
thetwo screwssecuringtheflange,then
removing
thetube.
Refit in reverse
order,
ensuringthat
both
"O" rings
arein good condition. Renewif necessary.
Note. Therear
of theburner
is locatedon a
dou'el-bracket
and
it is imporrant
to ensure
that
when
replacing
theburnerit is engaged
on thc
dorvel-bracket.
M4
SCREW
SPARK
ELECTRODE
M4
scREW
(2)
PIIOT
ASSEM
B
LY
nr-r -^Tn6
L/trrLC\-t\Jn
PLATE
M4NUT
(2)
M3
SCREW
IGNITION
LEAD
(CLEAR
END)
PILOT
JN ItrLU
THERMOCO
UPLE
tvt3
SCREW
sPILOT
SUPPLY
TUBE
M5SCREW
t)\
ct
s
SEALING
PLATES
Diagram
15
I
i
II
I
FRONT
CASE
CONTROLS
TRAY
CASING
SECURING
SCREWS
Diagram
14
>tu
11 :rl(iJ 1(i

6.3Flue
Hood
Rcrnovcthc frout casc as Scction6.1.
Rclcascthc hook boltsfrom thc hcating
body.
Using a long scrcwdrivcr,rcmovc thc two screwsat
thc top rcar corncrs
o[ thc fluc hood, scc
diagrlm
17.
Raisc
thc hood to clcarhcating
body andpull
lorward (o rcmovc.
Rcfit thc fluc hood in lhc rcvcrsc
ordcr, taking carc
not to damagc thc hcatingbody and ensurc
that rhc
hood fits squarclyon thc heating
body.
6.4Heating
Body
Rcmovc thc front cascas Scction6.1.
Rcmovc thc burncr
as Scction
6.2.
Rcrnovc
thc fluc hoodas Scction
(r.3.
Turn ofl' thc watcrscrvicc
cockand drain
dow,n
thc
hclting body by rcmoving
thc plug on rhc warcr
scrvicccock, sccdiagram
7 andopcninghot watcr
outlct taps. Collcct watcr in a suitablcconlainer.
Examincthc scalon thc drain
plug and renew
if
ncccssary.
Disconncctt.hc
lwo watcr
connection
unions
on
body lcgs, scediagram17.
Li[t thc body upwards
to clcarthc unions
and
rcrnovc lrom thc casc.
Rcfit thc body in thc rcvcrsc
ordcr,cnsuring
that
thc body frcc markcd "Back" is to thc rcar of thc
hcatcr. Rcncrv lhc washcrs
on thc union
connccIions.
6.5
Pilot
Assembly
Rcmovc
thc cascas Scction
6.1.
Disconncct
thc ignii:irnlcadfronr thc spark
clcctrr>tlc,
sccdiagrarrr
;5.
Rcrnovc
thc two sc:.rlinr:
platcs
hclrl in plucc
by rrvo
,\'l-j
scrcrvs. Whcn rcplacinq,
clrrc
slroulrl
bc t:rkcn
to cnsurcthat thc scltl is corrcc[lv
ltrtrtlc.
\\/itlrtlnr*,
thcrrnocouplc
sul'l'icicntll,
[o clcar
asscnttrly,b1,
pullingdorvn*,ards.This is bcst
luchicvctl
by pulling thc thcrmoccuplcliorn
rrntlcrsirlcol-
basc.
Discurrncct
thc pilot suppll,
tubc.
Rcrrrovc
tlrc lvl-l scrcrvsccurin!:
thc nilot shicld
irnd
rcnlovcylilot
shickl.
Rt'r'nr)\'c
thc ccntftrl irl.i scrcrvsccuring
thc (lcllt-ctor
plutt'. Rcr|rrlvc
(lcl'l(-ct()r
ltlutc
untl piklt usscrtrhli..
l{crrrovc
tlrc trvo N'lJ
scrc*s iln(lnuts
s!-curinstllc
llilot usscrrtlrl)'
to thc rlcl'lccrrlr plutc. Rr.til()\'c
I)ilor
lusserrrlrI).
Itelsscrrrlrlc
llilot irr r\:\'crsc
ortlcrrrrukirrg
surc thllt
tllc tll[) lr,.'trvct'nthc sllurk
cl\'rtr(xlc
lrntl
piklt
lrtrrrrcr
is Js shorvrrirrtliusrilruli lnrl tlcllccttlr
l)llltc
rcsts
()n
tol)ol'tlrc tulrlisc.dto thc lcli-lrantl
sitlc
ol'tlrc
lrurrre
r.
.:.-,'-\r | "l
BURNER
FEED
TUBE 114
I ll-.----
I tl
/7^' BttRNFF
TRANSFER
'O'
RINGS.-
'ffiffi
'rgi 0
-Pt:
"=-;*r^ ^^,-/H
FLANiEI
n) itt? s'b"nergl
(2) lTLJP
J-
lfr r* ___g\___,_n5 sc
R
E\,
(2) (2\ Diagram
16
FLUEHOOD
SECURING
SCREW(2)
HOOKBOLT(2i
Diacram
tz

6.6Thermocouple
Rcmovs
lront
casc
as
Section
6.
l.
Rcmovcrhescaling
platcs
hcld in placc
by rhctwo
N'15
scrctvs,
scc diagram
15.
\\/ithdraw thermocouplc
lrom rhcpilot assembly.
This is bcst
achievcd
by pulling
rhc rhermocouplc
from undersidc
of basc.
Withdrau,
the thermocouple.
Repl:ce in reverse
ordcr ensuring
frat rhescaling
plates
sealcorrectlyancl
that thc rhermocouole
connection
is providing a good contact.
Note. A quarrer
turn beyond finger tight is
sufficien
r.
6.7
Spark
Electrode
Rcmove
rhe
pilot
assernbll,
as
Secrion
6.5.
undo r\.13
scrc\\,
sccuring
the
sparkelecrocle
to
pilot
assembly
bracket.
Rcplacc
in reverse
order
cnsuring
that
the
gap
bclu,ecn
the
spark
elecrodc
and
pilot
burncr
as
shorvn
in diagram
13.
6.8 Piezo Unit
Rcmovc
control
ray b1,
pulling
foru,ard
and
disengaging,
scc
diagram
14.
Rcmove
ignirion
lcad
from rcaro[ piczo unit,scc
diagram
19.
Rcmovc thc M5 scrcwsccuringthc piczo button
rctaincr.
Rcmovcpiczo
buttonand unscrcrv piczo unit.
Rcplace
in revcrsc
ordcr.
6.9 Pilot Filter
Rcmove
conrrolrray
by pulling
forward
and
discngaging,
see
diagram
14.
DisconnecI
rhc
pilor
supply,
tubc
at conncction
to
main
gas
control
unitand
withdraw
thctubc.scc
diagram
19.
Rclcase
the
pilot
filrcr
cap,
notc
posirion
ol scaling
washcr.
Rcmovc
filrcr
and
scaling
s,ashcr
from
housing,
rcneu,
thc filtcrand
scaling
lvashcr.
Rcplace
in rcvcrsc
ordcr.
6.10
Main
Gas
Control
Unit
Removcconlrol tra;,
by'pulling fonvard and
discntaqinc,
scediagram
14.
Turn thc gas
:crvicc
cockol'l',scc diasrarn
19.
DisconnccI
rhcpilor
l'ccd
rubc
a[ connccrion
[o
lnain
qas
control
unit.
PIEZO
RETAIBUTTON
:'* \
PILOT
SUPPLY
TUBECONNECTION
M5
SCREW NPILOT
CONNECTOR
(FTLTER
CAP)
GAS
FEEDTUBE
UNION
NUT PILOT
FILTER
HOUSING
,/ M5
scREW
,/ / ,^r^*ocouPLE
UNION
NUT
/ cAs rNLET
TAIL
\
I
\,\
\u,,
IGNITION
LEAD
B
LACK
MAIN
GAS
CONTROL
UNIT
M5 SCREW ./-Z ll \ |tsr
I rull\ |
ufe':il'.IY,l''# s
5
0
s
l'o
N
)
(JAs rhEs5ufit
TEST
POINT
MAIN
GAS
rtLttH
UNION
NUT M5
SCREW
(2)
OPERATINGLEVER
GAS INLET
GAS
INLET
TUBE l)irnrrr:r 1
(.)
'-'-':,'""''-'

Disconnect.thethermocouplc
nut.fromrear
of main
gas
control
unit.
Disconnect
theignitionlead
from thc rear
of piezo
unit.
Remove
thcM5 scrcwsccuring
thepiezo
button
rctainer.Pull oif all knobs.
Remove
lhefour M5 scrcws
to releasc
clamping
plates
frombothendsof highandlow pressure
tubes,
seediagram20 and2l
. Remove
tubcs
and
examinc
"O" ringseals,renewing
if necessary.
Disconnect
the
gas
inletunionnut.
at controlandat
gas
servicecock,
seediagram
19. Removethe
gas
inlet.
[ube,raking
carenot to damagcmain
gas
filter.
Disconnect
the
gas
feed
tube
unionnutat conlrol
andremovc
thetwo M5 screwsat automatic
valve
gas
feed
flange
connection
then
removerhe
tubc.
Themain gas
conuol
unit cannou,
be removed,
by
removing
thelwo M5 screws
securingit to the
bracket.
Replacein reverse
order.
6.11Electro-magnet
Unit
Removethe main gas control unit.
as in
Section
6.10.
Remove two M5 screws
securing
the operatinglever
to thc body of thegas
con[rol
unir, see inset
in
diagrami9 and remove
the operaringlever.
Remove
singleNI5 screw
on the.topand rhefour
N'15
scrcwson the end.
Carefully
pull magnet
unit clearof housing.
Replacein reverse
order.
6.12GasFilter
Remove
control uay by pulling forrvard
and
disenga_eing,
seediagram
14.
Turnthegas service
cockoff.
Undo
M5 screws
to rclease
clamping
plates
from
both
endsof highand
low prcssuretubes,
sce
diagrams
20 au;,d21.
Removetubcs
and
examinc
the
"O" ringseals,
renew
if necessary.
Releaseunionssecuring
gas
inlettube
to thcmain
gas
control
unit andscrvice
cock,see
diagram
19.
Removethctube. Examine
"O" ring
seal
and
rcnewi[ necessary.
Withdrawthc main
gas
filtcr. Clean
or renewas
necessary.
Rcplace
in reverse
order.
6.13Summer/Winter
Control
Removetheconuols
trayby pulling
forwardsand
disengaging,
seediagram
14.
Turnthe
water
service
cockoff anddrain
the
heaterat thedrainscrew,
seediagram
20. Examine
drain
plug
sealand
renew
if necessary.
Pullthesummer/winter
knobfrom shaft.
Disconnectthesummer/winter
control
connection
andcarefully
withdrawthesummer/rvinter
assembly.
Examine
"O" ring
seal,
renewil necessary.
Reassemble
in the reverseorder
ensuring
thatthe
summer/winter
knobis correctly
aligned
with the
shaftbefore
pushing
intoposition.Theknob
shouldbc positioned
so that
with theshafiturned
fully anticlockwise
the
knob
points
towardsthe
word
"WINTER" on thecontrols
cover. \\'hen the
knobis turned
fully clockwise
it will point
tou'ards
the
word
"SUMlvlER".
6.14
WaterFilter
Removetheconuols
trayby pulling
fcr*'ardsend
disengagin:,see
diagram
14.
Turnthe
\\.rr^r
service
cockoff anddrainthe
heaterat thcciraiirscrew,
seediagram
20.
Examinedrain
plug
.eal
andrenew
if necessrr\'.
IVATER
FILTER SUMMER/
WINTER
CONTROL
CONNECTION
CLAMPINGPLATE PRESSURE
TUBE
WASFJES
SL,f\1l,lEF
,
\TINTER
XNOB
WATER
SERVICECOCK
WATEB
INLET
TAIL
AIN
SCREW
O
N/OFF
(sHowN
oFF)
206.{16 1A

Disconnectthe unionnut at waterinlet to throttle
housing
andat water
service
cock. Remove
tube
and
withdrawfilter. Examine
"O" ringseal,
renew
if necessary.
Cleanthefilter or renew
if necessary.
Replacein reverseorder.
6.15
Diaphragmand PlateAssembly
Renrovethecontrolstray by pulling forwards
and
disengaging,
seediagram
14.
Turn thewater servicecock off anddrainthe
heater,
see
diagram20. Examinesealon drain
plugandrenew
if necessary.
RemovetheM5 screwto releasetheclamping
plate
fromhighandlow pressure
tubes,
see
diagram
21.
Removetheeight
lr{5screwssecuringthebottom
covero[ diaphragm
housing.
Separatethehalves of diaphragmhousing.
Note. Whenreplacing diaphragm
ensure
that
the
highpressure
side
is facingdownward.
fl
6.16
SpindFfg.l. - DiaphragmHousing
Remove,r,"
.ffi ray bypulling forwardsand
disengaging,
seediagrami4.
Tum the water servicecock off and drainthe
heater,
see
diagram20. Examine
sealon drain
plr:e,
renew
if necessary.
Removethelv15
screwto release
'clamping
plate
fromhighand low pressure tubes,see
diagram
21.
Examine
"O" ring sea-lsandrenewif necessary.
Removethetwo M5 screws
securing
the
diaphragm
housingto lheautomatic
valve. Carefully
withdraw
the
diaphragm
assemblydownwardsleaving
spindle
in automatic
valve
section.
Remove
brass
washer
to expose seal. Carefully
prise
uutthe
spindlesealand
replacewithnew
seal. Lubricate
with
silicone
grease,
Dow
Corning
1ll or equal.
Replace
in reverse
order,taking
careno to bend
the
spindle.
6.17
Automatic
Valve
Completethestepsin thefirst five paragraphs of
Section
6.16to remove thespindle
and
seals.
Remove
theburner as in Section6.2.
RemovetheM5 screwsat automadc
valve
sas
feed
pipe
flange
connection,
Remove
thefourM5 screwssecuringtheuansfer
elbow
to automaticvalve.
Remove
lhe automaticValve. Examine
gaskes
and
"O" ring seal,renewasnecessary.
Replacein reverse
order.
sf _ BRASS
WASHER
(a-\)l'
ffi-,.-- SPAcER
H" -----
vALVE
SPINDLE
l)-{
N '' -/ BRASSWASHER
X'/.
\? . JEAL
C')
qM5SCREW
(4)
TRANSFER
ELBOW
AUTOMATIC
VALVE
StAL
PR
ESSURE
th5 I
POINT
SCREW
/
M5
SCREW
(2)
M5
SCREW
(8)
DIAPH
RAGM
AND
PLATE
ASSEM
BLY
HIGH
PRESSURE
TUBE
RING
i@
Diagram
21
GASKETS
1q
LOWPRESSURE
TUBE
206J
|
6

7.1
Pilot
wilt not tight
CAUSE
Operating
instructions
notcorrectly
carried
out._
Gas
inletprcssure
inadcquatc/restricted.
Air in gas
linc.
Pilotsupply
blocked.
(a) Removepilot injector
andpress
on I knob, gasflows freely.
(b) No gas
when
on I tnob is pressed-
Gas
supply
to pilor,
butpilorwill not lighr.
_-
Spark
at elecrrode,
butpilot srill norlighting.
No spark at electrode.
7.2
Pilot
will not stay
alight
when
Control
CAUSE
Thermocouple
has
faulty
contact
at
maingas
conrrol
unit.
Faulty
electro-magnet
unit.
Outcr
case
serl inelfectivc.
7.3Main Gas will not light when Hot
CAUSE
REMEDY
Followlightjng
instructionsconectly.
Checkall gas
cocks
arcopen
and
gas
lineis unrestricted.
Purge
out
air.
Clean
injector.
Clean
pilotfiltcr and
gas
ways.
Check
there
is a sparkarelecrodeby placing
an
eanhedscrewdriver2mm awayfrom eiecuode
and
pressing
conrrolknob.
Check
correct
gap
between
pilotand
elecrrode,
see
diagram13.
(a) Checkignition
leadfor shortingour.
renewif defective.
(b) Renewfaulty
piezo
unir.
Knob
is released.
REMEDY
Pilor
flame
not impinging
on thermocouple. Check
pilor
is correctly
posirioned,
see
diagrarn12.
Renew
pitot
if no thermocouole
flameevidenr.
Thermocoupie
tip burnt
away.
Check
for partial
blockaeeandclcrn.
Renewthermocouple.
Checkftat thermocouple
conractin main gas
control is tight. Nore. One quarter
turn beyond
finger tight is adequare.
Renew thermocouple
Renervunit.
Check
cascfitted
conecrlv.
Chcckseal
is nordamaeed
andis searcdcorrecilv.
Faulty
rirerinocouple
Tap is opened
REMEDY
Insufficient
warer
flow/inadequate
pressure
(a) Cistern
supply
(b) lvlains
supply
(whcn
othcr
coldwarer
draw
off taps
in use).
Inlctwa(cr
supplyrcsricred
by stop
cock
Air lock in supply
pipes.
Hcrt cxchanger
fouled
by
2n6d 1
A
Raisetank
or connccl
to main-s
suppll,
(subject
to watcr
undcrraking
,-crulations).
Connectto cistcrn
supplyif hcatj
is availablc
consult
wal.ci
(:ompany
with rcgard
tc lorv
prcssure.
Fullyopcnall stopcocks.
Removeair lock.
Dcscaleor changc
h,:rtexchangcr.
scalc.

Water filter blocked.
Venturi
or high and
Slou, ignition valve
Diaphragmdamaged.
Valve spindle sticking.
Throttle inconectly set.
Maingasways
or injector
blocked.
7.4Slow lgnition
of MainBurner
or
CAUSE
Reduced
gaspressure
at burner:
sr.iff.
low pressure
tubes
blocked.
--
notadiustedcorrectlv
or blocked.
-
Low
Cleanor change
watcrfiltcr.
Checkthat.
venturi
and
pressuretubesareclear.
Readjust
or clean
as
necessary.
Inspect
and
renewdiaphragm
if necessary.
Check
valve
spindle
is undamaged,
lubricate
or renewasnecessary.
Checkthrottle,
reselas
necessary.
Inspect
and
clearany
obsuuction.
OutletTemperature.
REMEDY
(a) Gasservice
cock
not fully open.
(b) Obstruction
in main
gas\\,ays.
(c) Reducedinlet
pressure
Insufficientwater
flow
(a) \\/arer
servicecocknot.
to fully opengasvalve.
fulli'open
(b) \\/ater filter blocked.
(c) Insufficientpressure
fromu,arer
(d) Heat
exchangerfouled
by scale.
supply.
Excessivewaler flow throuehheater.
SIo*, isnition valve incorrectly
sct.
_
Diaphragm
defective.
Automaric
gasspindle
7.5Main
Burner
Remains
Alight
afterTapis
CAUSE
Automatic
gasvalvc hcld opcn by foreign
body.
Diaphraurn
defcctive.
Automaticgasvalvc spindlc
stiff.
Turngas
cock
fully on.
Inspectfor andclearany
obstruction.
Ensure
that
gas
supply
is clearof anyobstructions
andthat
it is adequate for the
heater
when
other
gas
appliances
arein use.
Turnwater cockfully on.
Clean
u'ater
filteror rene\\'asnecessary.
SeeSection7.3.
Descale
or replacehealexchanger.
Check
waler
flow rate through
theheater.
Resetthrottleheater
asnecessary,
if stiff,
examincthrottlc
lor obstruction.
Clean
andadjustslow
ignition
valvc.
Examineandrcncwdiaphragm
asnccessary.
Examine
spindle,
rcnov
if nccessary.
Lubricatespindlc.
turned
off.
REMEDY
Aul.omatic
Low and
Ball sruck
Dcad lcg
Automa[ic
gas valvc spring u,cak
or damagcd.
highprcssurc
tubcsblockcd.
in slow ignitionvalvc.
in wirtcr supply crcating
an air lock.
Clcan
gasvalvc scat,chcc:k nutin
gls l'iltcr.
BIow out fccd tubcs.
Examinc and rcplirccils ncccssilry.
Examincspindlc,rcnov il-ncccssllr)'.
Lubricatcspintllc.
Rcncwspring.
Rcmovc and blow through.
Clcln or rcncrvball.
Rcrnovcdcad
lcg.
In.spcct.
scal antl rcncrvil' ncccssary.
gas valvc scll damagcd
17 2064
i6

2
l
I
6
/
I
/
I
+
,(q.
rE<l
Y
3
\
lt
J,
JI
q
lt
!l
12
/
18
2054
16

When
replacement.
parts
arerequired,
apply
to your
local
supplier,
quoting
rhe
name
of the
appliance,
Ascor
1.4SWater
Heater
andits serial
number.
Key
No GC.
No
281
306
281
318
384 266
281
389
281
3tI
28i 313
281
386
281 370
28r 362
28t 363
28t 364
28r 317
Glorv-ryorm
Part No.
420020
203008
202602
203300
202401
203502
2021M
208018
2c/601
204606
2M60s
ww46l0
I
3
,1
I
5
6
7
8
9
10
11
L2
Front
cover
assembly
Burner
injector
Electrode
Elecro - Mag
Thermocouple
PilotInjecror
Spark
Igniter
Diaphragm
and
Plare
Igni[er
burton
Startcr
button
Stop
burton
Ignition
lead
asscmbly
asse
mbly
Description
19 206{I6

Infonnation
for the Installerand SeryiceEngineer.
Under Section6 of theHealthandSafery
at Work Act 7974,
we arerequiredtro
provideinformationon
substances
bazardous
to health.
The adhesivesand sealants used
in this appliancearecured
andgive no known hazard
in tiis state-
GLASS YARN
Cancause
irritation to skin, eyesandtherespkatorytract.
If you havea history of skin complaint
you may be susceptible to iritation. High dustlevelsare usualonly if
tbe materialis broken.
Norrral handlingshould not causediscomfort,
but follow normal
goodhygiene andwashyour hands
before
eating,drinking or going to the lavatory.
If you do suffer iritation to lhe eyesor severeirrihtion to theskin seek
medical
attention.
Because
of our constant
endeavour
for improvement
detailsmayyary
slightly
from tkose
in the inslruci;ons.
206416 20