CHAFFOTEAUX Corvec Britony II Release note

Supplied By www.heating spares.co Tel. [phone]
chaffoteaux ltd. c%%iiii~
CORVEC BRITONY II
CONFORMS WITH EUROPEAN STANDARD EN.26
installation
servicinginstructions

Supplied By www.heating spares.co Tel. [phone]
Page 3 : TECHNICAL DhTA
Pages 4. 5 and 6 : IXSTALLXTION
Pages i. B and 9 : SERVICING [SSTRUCTIONS
Pages 10 and 11 : F.4ULT FINDING CHART FOR CORVEC BRITONY II
Page 12 : SHORT LIST
GENERAL
e CORVEC Britony II is a balanced flue instantaneous gasfired muitipoint water heater. Two models are available,
_ ,rorrnai pressureversion for direct connection to the mains coid water supply and a low pressureversion for connection
to a coid water storage tank.
The CORVEC Britony II does not require any purpose provided ventilation unless installed in a compartment. A
compartment enclosing the heater requires high and low level openings communicating with outside air or the room in
which the compartment is located. The free areaof these openings must be :
High Level Low Levei
Air from room
102 cm2 (I 5.8 in2)
102 cm2 (15.8 in2)
Air from outside
51 cm2 ( 7.9 in2)
51 cm2( 7.9 in2)
The installation of the heater must be in accordance with the relevant requirements of the Gas Safety Reguiations,
Building Regulations and the Byeiaws of the local Water Undertaking. It shouid also be in accordance with any relevant
requirements of the local gas region and iocai authority and the relevant recommendations of the following British
Standard Codesof Practice.
CP331 Installation of pipes and meters for town gas
-y3 Part 3 - Low pressure installation pipes
‘CP32 Selection and instahation of town gashot water mppiies. Pati 1 - Domestic premises
-5440 Flues and air supply for gasappliances of rated input not exceeding 60 kW (1st and 2nd family gases)
Part 1 - Flues
Part 2 - Air Supply
i’

Supplied By www.heating spares.co Tel. [phone]
technicaldata
.YA’l-C’RAL c;,\s
TABLE 1
Heat mput Nominal. ........................
Heat output Nominal .......................
Gasrate (maximum) ........................
Burner pressure ...........................
Main burner mjectors marking &. ................
Pilot injector marking .......................
Water flow rate . raised 500 C (900 F) ............
Water tlow rate . raised 300 C (540 F) ............
Minimum operating head for normal pressure........
Maximum operating head for normal pressure .......
Minimum operating head for iow pressure ..........
Maximum operating head for low pressure..........
30.27 kW
”
m-.
70 kW
3.81 mjih
15 mbar
113
23
6.5 I/m
11.l I/m
10m
IOOm
3.5 m
8 m
103.280 Btu/h
77.450 Btu/h
99.24 ft3/h
6.0 ins
1A4 g.pm.
2.44 g.pm.
15p-s-i.
150psi.
11Jft
26 ft
-
Note : The minimum water pressure is for the correct operation of the heater only. An additionai allowance
must be made for the resistance of the pipework and fittings particuiariy where showers and washingma&&a
areused. This should be the equivalent of 2 m (6.5 ft) head.
Water iniet .............................. Right hand connection 15mmcopper
Water outlet ............................. Left hand connection 15mmcopper
Gas ................................... Centre connection 15mmcopper
Height ................................. 655 mm 26 in
Width .................................. 395 mm 15.5 in
Depth .................................. 253 mm 10 in
Weight ................................. 19kg 42lb
Spaceforftig-Top ....................... 65 mm 2.6 ins
Spacefor fixing . Bottom ..................... 178mm 7.oins
Spacefor fling -Sides ...................... NIL NIL
Spaceforftig-Front ...................... 152mm 6.0 ins
HOLE FOR WALL LINER
Width ..................................
Height ................................. 305 mm 12ins
205 mm 8ins
WALL THICKNESS
Standardflueset .......................... 75-355 mm
Optionaiflueset ........................... 75-610 mm
NB. The low pressuremodel does not havea temperature selector knob
3.14 ins
3-24 ins
NATURAL GAS

Supplied By www.heating spares.co Tel. [phone]
installation
rile CORVEC Uritony 11is supplied in two cartons. one :\ minimum ciearance or SO mm t3.2 in) should be left
<ontamtr;c LilL’ heater. the other contammg the balanceu above the top edgeot‘ the wall openmg. For dimenstons and
tlue ser. ilearance seePage.! 2nd fechmcai Data. Puge3.
INSTALLING THE B;\LANCED FLUE
nle srclndard flue set ISsultabie for walls havmg a thickness
0i 75 mm (3 in) to 355 mm (14 in). Xn optional flue set
<or wali thicknesses up to 610 mm (24 in) ISavatiable to
spectaiorder.
Detaded recommendations for tlueing are given m BS
5440 : 1. The foilowtng notesare for generai gutdance oniy.
The heater must be installed so that the flue termtnai is
exposed to the external air. The heater must not be ins-
talled so rhat the terminal discharges mto another room or
spacesuch asan outhouse or lean-to.
rmmatlon should be on a clear expanse oi wail. the
termtnai preferably being not lessthan 000 mm 1.I ft) away
from a corner. recessor projection.
DO NOT install the terminal :
a) within 100 mm (1 ft) measured vertically from the
bottom of sn openable wmdow. air vent or any other
ventiiation opening.
b) within 300 mm (1 ft) above adjacent ground level.
c) within 600 mm (2 ft) of any surface facing the terminai.
d) immediateiy beneath eavesor a balcony.
Where the lowest part of the terminal is less than 2 m
(6.5 ft) above the level of any ground. balcony, flat roof or
place to which any person hasaccess,and which adjoins the
wail in which the terminal is situated. the tet-mtnal must be
protected by a guard of durable materiai. (A terminal guard
isavaiiable from Chaffoteaux Limited).
The air iniet. product outlets duct or termmai oi the heater
must not be closer than 50 mm (2 in) to any combustible
tertal. Detailed recommendations on the protection of
,umbusribie material are given in BS 5440 : I.
PREPARING THE WALL
The heater should be installed on a wall of flat non-com-
bustible material that w-ii1 not reverberate. Whatever the
thickness of the wail. make a hole 305 mm (I? in) wide by
205 mm (8 in) high. If the hole is cut accurately there is no
need to iine it as the wail liner will seai off the cavity.
Slide thi: wail liner through file wali ensuring that it is
horizontal and chat the tlanged end is flush with the face of
the lns~de w;lil. Trim Lo length LI ncces=ry. so that the
outer end of the duct IStlush with the t’a<eoi the outside
wail. Make good around ihc wall liner 11’necessary(fig. 1).
N.B. For walis oi between 75-100 mm (3-J in). turn the
wall liner hooks down through 900
FI’I-I-ING THE FLUE TERMINAL
The flue terminal may be fitted trom mslde or outside of
the building by fixing the two sprmg loaded chains over the
hooks on the instde of the wail liner (fig. ‘1.
Where the termtnai is to be m&led from mstde the buil-
ding. it can be passedthrough the wail liner and pulled back
into posltton by usmg the chams. Where this procedure is
used it must be ensured that there IS no risk that the
terminai can fall. It is recommended that a length of cord
or string is fiyed to the termmai to prevent any risk of
damage to the terminai. the building. or to danger to
persons tn or about the building.
INSTALLING THE HEATER
The heater is attached to the waii by .?studs at the top and
two screws at the bottom. .A further optronai top fting is
provided for instailations where the waUadjacent to the top
fixing hoies is of lessthan sound construction. The fig
studs. screws and optional cop bracket are packed witk
the gas service tap and a foam gasket and placed in a box
which is found inside the heater.
Remove the front caseof the heater by pulling off the gas
control/temperature control knobs and unscrewing the
three ftving screws at the :op. bottom and between the
control knobs. Pull off the front case taking .care not to
loose the rubber spacer behind the centre fixing screw.
Fig. I
pie. 2 Fie. 3
conbustible

Supplied By www.heating spares.co Tel. [phone]
installation
Remove the tiue bend from the top of the heat exchanger Distance t’rom Meter
hy reieasmg the t‘ixing clip and removtng the two screws. outlet to heater GasSupply
N.B. It’ ihe oprionai top fucing bracket IS to be used this
Aouid now be attached to the top of the rear casewith the
screwsaiready ritted to the case(fig. 3).
Using the heater as a template. locate the spigot oi the
qpilance III the wail liner. check that the appliance is
vrrtlcal 2nd mark the four or five fiiing holes. Drill and
piug the wail and fasten the top studs in position. These
studs can be screwed into the wall by locking two nuts
together on the parallel thread and using a spanner.
.-\itach the seit‘adhesive foam gasket to the flat surface oi
the heater around the air inlet spigot of the rear case.
Remove the protective paper whiie sticking down the gasket.
Lift the hearer into position on the wail. locating on the
stuc1sand the wail liner. Secure the heater to the wail using
*he nuts and screws provided. The hooks fit under the
;IIJCSor’ the top iixing studs (fig. 4).
Trxnsrer the termmai fixing chains from the wail iinet to
these hooas. T’he termmai chains should not be left fixed
to the wail liner hooks.
Slide the rlue duct through the rectangular hole in the rear
case and engage into the central spigot of the termmal so
that it touches the two end stops. Refit the flue bend so
that the flue duct engagesby at least 25 mm (1 in). it may
be necessary to cut the flue duct to the correct length. and
ensure that the flue bend is seated correctly on the heat
exchanger with the gasket in place. Replace the two screws
and clip securmg the !lue bend.
Do not refit the front cover until the appliance has been
iommissloned.
GAS CONNECTION
,<emove the piastic cover from the gas inle; which is the
centre connectlon on the bottom of the heater.
Fit the gas service tap provided using the fine filter washer
to seai the connection. Fit the 15 mm dia. copper tail nut
and washer provided to the inlet of the gasservice tap and
connect this to the gassupply.
The size of the gas supply pipe from the meter to the
heater oniy should be asfollows.
O-3 m t O-IO ftl IS mm
3-20 m ( IO-65 ft ) ‘2 mm
20 m and above contact British Gas
These sizes are for the heater oniy and do not take account
of any other gasappiiances that may be connected to the
samegasservtcepipework.
WATER CONNECTIONS
Remove the plastic covers protectmg the water inlet and
outlet connections.
Fit the water service tap provided to the right hand connec-
tion at the bottom of heater usmg the coarse Mter washer
to seal the connectlon.
Fit the 15 m dia. copper tails and washers provided to the
inlet of the water service tap and to the outlet of the heater
(left hand connection 1.
The water service tap supplied with the heater incorporates
a drain plug.
APPLICATIONS OF THE CORVEC BRITONY II
The heater is designed to servea variety of hot water draw-
off points including washing machines and showers. The
heater can be connected to all the hot water drawaff
points in the installation. but it should be appriciated that
depending upon the temperature seiected. the water flow
available wiil normally only be sufficient for simultaneous
drawaff at a maximum of two points.
The heater is compattbie with most current automatic
washing machines. but care should be taken to ensurethab
the machine is capable of accepting water at the design
flow rate of the heater. Hot and cold fii machines normally
require a hot water temperature of 600 C (1400 F), the
heater producing approximateiy 6.5 i/m (1.44 gpm) at
this temperature. (he advice of the washing machine manu-
facturers should be sought, but generally it is only neces-
sary to remove the water flow restrictor (if fitted) in the
hot water inlet connection of the machine to obtain a
satisfactory heater operation.
TO COLD TAPS ALTERNATIVE
POSITION
Remove

Supplied By www.heating spares.co Tel. [phone]
installation
Contact C‘haffoteaux Limited for detatis of those machines
known IO be compatrble with the CORVEC Britony il
The heater can be used to supply hot water to a separate
shower draw-oii. The heater should not be used to suppiy
more than one shower mixing valve. but can supply two
shower heads oif a singie nuxing valve. The recommended
pipework arrangement tbr a smgle shower head is shown
in fig. 5. Only those .‘ittings detailed should be used with
the heater. Chaffoteaux Limited to not supply the water
governor or any shower fittings. For local supplies of
thesepieasecontact :
Water Governor Dereve(Flow Controls) Limited.
Unit 11. Middlemore industrtal Estate.
Middlemore Road. Smethwick, Warley,
West Midlands
Tel :021
520 1337
1
Shower Accessories Walker Crosweller & Co Limited,
Whaddon Works. Cheltenham.
Gloucestershire CL52 SEP
Tel .0’42 27953
. -
Do not use the heater with push-on hand showers that fit
over existing hot and cold water taps.
PIPEWORK
The following notes are for general guidance only.
6) the heaters performance may be affected if the
installation has old pipework forming dead-legsor air
reservoirs. Always ensure that any old pipework is
either removed or capped off immediately adjacent
to the pipework that will be in use.
(ii) the size of pipework between the heater and the
various draw-off points should be sized to ensure an
adequate flow at all draw-offs when used individually.
PUTTING INTO SERVICE
Open the gasand water service taps beneath the appliance.
Purge the gasand water supplies. Check for gasand water
soundness at all heater and extemai pipework connections.
Fit the gas control knob and light the pilot by turning the
knob 900 anti-clockwise. it may be necessary to purge the
pilot gas suppiy, if so, wait a few moments. return the gas
.troi knob to the off position and repeat. (The pilot
jclppiy wiil only purge when the gascontroi knob has been
turned 900 anticlockwise).
Turn the gas control knob fully anticlockwise to the main
gas posttion. if the piiot IS now extinguahed for any
reason. return the gas control knob to the off position and
watt approxnnateiy 30 seconds for the safety interlock to
reset Itself.
Turn on an adjacent water draw-oif pomt. the heater will
now light.
Check the burner pressure by fitting a suttable gaugeto the
pressure test point on the end of the burner manifold. The
correct pressure is given in Table 1. Page3. If the burner
pressure is not correct. check that the pressure at the gas
tap test point is 20 mbar (8 ins w.g.) with the appliance
operating. If the inlet pressure is not correct. check for
any possible blockage or restriction UI the pipework to
the heater. If the pressure cannot be corrected contact
your local gas region. The heat input to the heater is preset
and non-adjustable.
For the low pressure model. adjustment of the water flow
rate is necessary. With the burner pressure checked as
before. adjust the water throttle (fig. 6) to give a temp-
erature rise of 500 C (900 F). Screw in to increase the
temperature and out ot decreaseit.
Remove the gascontrol knob.
Replace the front cover ensuring that the rubber spacer
is in place behind the centre fixing screw. Refit all fixing
screws. Replace the gas control knob and temperature
control knob ensuring that the knob indicates “hot” when
turned fully clockwise.
Hand the User’s instructions to the consumer and instruct
in the correct and safeoperation of the heater.
DRAINING THE HEATER
If the heater is not to be used for long periods it is recom-
mended that it be drained. See the Servicing Instructions
for how to dram the heater.
Fig. 6
520 1337
control
supply

Supplied By www.heating spares.co Tel. [phone]
servicinginstructions
Before commencingany servicingwork. turn off the gas
andwaterat the gasandwateriniet tapson theappiiance. Rep&e in reverseordermakingsurethat the
gasket bet-
weenthe burnermanifoid andgassectionisin placeand
thatthe burnerheadassemblyiscorrectly located on the
two spigotsat therear.
RECOMMENDED SERVICING SCHEDULE
For efficient andtrouble-freeoperation.it isret&mended
that the heateris servicedannuaiiy, The following work
shouidbecarriedout by acompetentperson.
0 Cleantheburner
ii) Cleanthe heatingbody (In hard waferareasir may
be necessaryfo descaiethe heating body)
ii) Cleanthepilot andthermocouple
.V) Cleanthegasandwaterfalters
“) Cleanthewatergovernor
vij Changethediaphragmeverythreeyears
3) HEATING BODY
Removethe flue bendfrom the top of theheatex&an-
gerby ,removingthe clip gnd the fwo fixing screws.Lift
the flue bendoff the heat exchangertakingcare not to
damagethe sealinggasket. The heating body can be
exa&ed in posirion, and if external cleaningis s&i-
cient, removethe burner and cleanthe heatexchanger
with asoft brush.detergentandhot water.
To remove the heatingbody for further cieaning,the
heatermustfirst bedrained.
1) FRONT CASING
To remove,pull off the gascontrol and temperature
controlknobs.
Unscrewthe centre futing screw betweenthe control
knobsandthe top andbottom fixing screws.
PuII off the casetaking care not to loosethe rubber
spacerbehindthecentreftig point.
Turn off the wafer iniet tap to the applianceasbefore
andopenan adjacenthot waterdraw-off point:Remove
the drain plug from the side of the water inlet tap
(C - fig. 8) anddrain the water from the heater. Alter-
nativelyremovethe wafergovernorplug(D -fs. 8) from
the baseof the wafer sectionand drain the water from
the heater. Replacethe drain down valve and/or water
governor plugbeforeproceeding.
Removetheburner(seesection2)
2) BURNER
Removethe screw holding the bottom of the heating
bodyskirt to therearcase.
Unscrewthe pilot tube clampingscrew(A - fig. 7) and Releasethe two union nuts joining the heating
body
removetheclampandtube. legsto the wafersection.
Removethe burner manifold by unscrewingthe two
screws(B -fig. 7). Removetheheatingbody.
MI burner head assemblyforward to remove,taking
care not to trap the thermocoupleor igniter wires.
The burner head should be turned upside down and
cleanedby brushing.
In hard water areasit may benecessaryto descaIethe
heating body. Use a solution consistingof 5 parts
water to 1 part hydrochloric acid. The water should
preferably be hot - ADD ACID TO WATER NOT
WATERTO ACID.
Fig. 7 Fig. 8 Fig. 9
iv)

Supplied By www.heating spares.co Tel. [phone]
servicinginstructions
[‘ill the tmtmg body with this soiutm ami leave unrd
ttlc soiutlon stops bubbling. Flush out the hcatmg body
rilorouzidy bciorc rctitting to the heater.
W,ARNINC - \CID/W.ATER SOLUTIONS \lUST BE
USED WITH E!CI-REblE CAUTION. T,AKE CARE NOT
TO SPLASH THE SOLUTION ONTO SKIN OR INTO
THE EYES. WASH ANY AREAS AFFECTED WITH
LARGE .4310UNTS OF COLD WATER AND SEEK
MEDICAL ADVICE.
Re-assembie m reverse order ensuring that the skirt
t‘ixing screw and reinforcing strip arc m pisce.
4) PILOT
Unscrew the pliot tube ciamping screw (A - fig. 7). and
remove the ciamp and tube.
Blow through the tube to remove any dust.
Remove the burner (seesection 1).
Unscrew the knurled pilot burner outer rmg (E - fig. 9).
Unscrew the piiot body (F - fig. 9), with a 15 mm
spanner. Clean by blowing or washing in water. Do
not clean the holes with a wire.
Blow any dust out of the gassection.
Re-assemblein reverseorder.
5) THERMOCOUPLE
Remove the burner. seeSection 2.
Remove the pilot. seeSection 4.
Unscrew the thermocoupie nut (G - fig. 10) from the
thermo-electric valve and remove it from the wire.
With a 7 mm box spanner. unscrew the nut (H - fig. 11)
holding the thermocouple into the gassection.
Thread the thermocoupie and wire up through the gas
section.
Replace in reverseorder.
6)
7)
SPARK ELECTRODE
Remove the burner. XC &XLIUII .!.
Remove the ciectrodc t’ising screw (J - fig. 1I) with a
screwdriver placed inside the hcstmg body skirt.
Pull ol‘i the electrode cable t‘rom the p~ezocartridge.
Lift the eiectrodc out 01.the gsssectIon.
Reassemble in reverse order. and note that the slot in
the connector on the end of the electrode cable is
vertical when pushed onto the cartrIdge.
THERMO-ELECTRIC VALVE
To repiace. remove the thermocouple nut (G - fig. IO)
Unscrew cap from the side ot‘ the gas section and with-
draw the thermo-electric valve.
NOTE : This heater is fitted with a safety interlock.
When the pilot is turned off. the heater can not be relit
until the thermocoupie cools down and the lighting
sequenceis repeated.
8) MAIN GAS VALVE
To inspect and clean. remove the burner (seeSection 2).
Disconnect the thermocoupie and igniter lead (see
Section 5 and 6).
Remove the four screws iastenmg the top of the gas
section to the base (K - fig. 12) and the two screws
at the back (L - fig. I?), holding it to the rear case:
Lift the gassection top oif the base.
Remove the complete gas valve assembly by unscrewing
the brasscylinder that has two flats.
Dismantle the gas valve assembly by unscrewing the
hexagonal spring retainer from the top of the assembly.
Remove the spring and gas valve and cleah the valve
seating.
2

Supplied By www.heating spares.co Tel. [phone]
servicinginstructions
!ieplace c/11’gasvalve lacing rubber and gasvalve assem-
t>Iv“0” ring 11‘ricccssarv.
!<~~Ixc 111reverse order. cnsurtng that the hexagonai
,pru$ rctammg nut 1sscrewed fully down and the
whole assembiy is screwed fully down Into the gas
xectlon.
(Jean tjlc t‘ilters t)y blowmg or washing in water. DO
NOT useany solvents.
Replace erlsuring that the coarse filter IS fitted in the
water inlet and the fine t’iltcr in the gasinlet.
9) DIAPHRAGXI
To replace. turn off the cold water supply and gas.
Drain the heater by removing the water governer plug
situated in the baseof the water section.
tinscrew the four water unions (M - fig. 13) on the
ivater sectlon.
tinscrew the SK screws (N - fig. 13) holding the water
12ctlon to the gassection.
[bemoverhe water section complete with the diaphragm.
Replace III reverse order - NOTE - fit the water gover-
nor iast. It is easier if the cold water miet connection is
partially engaged before fitting the screws and re-
connectmg the union nuts.
10) WATER GOVERNOR
To clean. turn off the cold water supply to the heater.
Remove the governor situated in the baseof the water
section (0 - fig. 14).
Clean the components with water.
Check that the spring loaded piston moves freely.
Replacein reverse order.
11) GAS AND WATER FILTERS
12) PIEZO CARTRIDGE
Pull off the electrode from the piezo cartridge.
Remove the screw holding the gas control cam and
remove the cam CP- fig. 15).
Remove the two screws (Q - fig. 15) holding the
retaining piate.
Remove the piezo cartridge and replace if necessary.
13) HEAT INPUT
The heat input is pre-set and non-adjustable. The
heat input and burner pressure should be checked
’ against Table 1.
If the heat input/burner pressure is,not correct, check
the working pressure at the pressure test point on the
gas service tap. This should be 20 mbar (8 ins w.g.).
The gas installation should be examined for any
possible blockage if the pressure is incorrect.
14) WATER SECTION VENTURI
Drain the heater asin Section 3.
Gasand water inlet filters are fitted between the inlet
tapsand the heater.
To clean. turn off the taps, unscrew the union nuts
Disconnect the right hand heating body leg at the
water section and remove the venturi.
Clean or replace asnecessaryand re-assemblein reverse
attaching the taps to the heater. and remove the filters. order.
bly

Supplied By www.heating spares.co Tel. [phone]
PROBLEM CAUSE
WATER TE>lPERATURE i ) Water rate too high (LP model)
i i ) Insufficient gasilow
i i i ) Water governor sticking (Mains model:
i v ) Incorrect venturi
v ) No venturi fitted
BURNER STAYS ON
YELLOW FLAMES
SOOT FORMED
UNSTABLE FLAMES
HEATING BODY
NOISE
[NSUFFICIENT
WATER FL0 W
i ) Air in pipework
i i ) Gasvalve stays open
i i i ) Venturi blocked
i v ) Dirt on gasvalve facing
v ) Loose jumper on house stop cock tap
v i ) Dirt or foreign matter in water section
i ) Heating body fins blocked
i i ) Primary air suppiy restricted
i i i ) Wrong injectors
i ) Water in gasline
i i ) Faulty flue
i) Scale
i i ) Excessivegas
i i i ) Insufficient water flow
i ) Water service tap partly closed
i i ) Blocked venturi
i i i ) Low water pressure
i v ) Water governor faulty
v ) Water governor sticking
v i ) Foreign matter in water section
v i i ) Water reguiator (LP model)
REMEDY
Check water regulator
Check rate and user’s tap is open
Remove and clean or replace
Replace (Mains model 3.65 mm
Fit
LP model)
Check for “dead-legs”
Clean and greasegasspindle
Remove and clean
Strip and clean gasvalve
Replace water stop tap or pin down
jumper
Clean water section
Remove heating body and clean
Check burner manifold and clean
Check injector sizes
h3e
Check terminal position and flue ducts
Descaleheating body
Check gaspressure(seePage3)
see below
Check it is fully opened
Remove and clean venturi
Check water pressure
Changegovernor
Remove and clean or replace
Remove and clean
Adjust

Supplied By www.heating spares.co Tel. [phone]
PROBLETvl CAUSE REMEDY
PILOT FLAME DOES NOT i ) Gasservicetap closed Open servicetap
LImn ii) Airinpipe Purge iine
i i i ) Pilot injector blocked Clean or change
a
i v ) No ignition spark Check electrode. lead and igniter
POOR PILOT FLAME i ) Pilot injector dirty/damaged Clean or change
i i ) Wrong injector Change for correct diameter (0.23 mm)
i i i ) Pilot headblocked Clean
i v ) Faulty piiot tube Clean or replace
PILOT WILL NOT i ) Thermocouple not working Change thermocouple
STAY ALIGHT i i ) Thermoeiectric vaive faulty Change valve
i i i ) Gaspressurelow/variable Check at inlet to heater (seePage3)
i v ) Terminai wrongiy positioned Reposition heater (seePage3)
v ) Badly assembledflue Refit - check sealing
v i ) Gas pressuretoo high Check with British Gas
MAIN BURNER DOES NOT i ) Gasservicetap not open fully Open fully
LIGHT i i ) Gaspressurelow Check at manifold and at inlet with
heater running (seePage3)
i i i ) Water rate iow Check if water rate is sufficient (Page3)
i v ) Gasvalvenot opening Check(v) and (vi)
v ) Diaphragm punctured Change diaphragm
v i ) Venturi blocked or loose Check venturi
v i i ) Gascontrol tap faulty Check operation of User’sgascontrol tar
v i i i ) Wrong injector Check for correct diameter (1.13 mm)
SCPLOSrVE IGNITION i ) Pilot Check pilot tube and injector
SAS CONTROL TAP i ) Greasedried Clean and regrease
ITIFF (USERS) i i ) Operating mechanism replaced Refit
iIlCOtTE%tly

Supplied By www.heating spares.co Tel. [phone]
CHAFFOTEAUX LIMITED
Concord House - Brighton Road
Salfords - Redhiii
SURREY RHl 5 DX
HORLEY (02934) 72744