Dunsley Heat Wentworth User manual

USER'S INSTRUCTIONS
The Wentworth is controlled by a flame supervision
device control unit, which automatically shuts off the
gas supply should the flame be extinguished with or
without your knowledge. An oxygen depletion system
is also fitted for additional safety. FIG. t.
1.The ignition is by Piezo Spark.
2. The control knob in the OFF
position, see FIG. 1.
3. To ignite, depress knob and
turn anti-clockwise through
to the pilot position to create
a spark, keep depressed,
when the pilot flame is alight
keep the knob depressed in
this position for approx. 15
seconds to allow the
thermocouple to react. Ifthe
pilot does not ignite firsttime, turn to off and repeat.
The pilot light can be seen above the pilot cover plate, 20mm to
the left (facing) of the 10mmholein the centre of the pilot cover
plate. See FIG.2.
4. If the control knob is thenreleased, the knob is in a position
giving a pilot flame only.
S. To put the fire onto main flame, turn knob anti-clockwise through
to the max setting.
6. To adjust to a lower setting turn knob clockwise towards MIN.
to obtain the heat required.
7. To turn fire off, depress knob turn clockwise to pilot.It will be
noted when the control knob is in pilot position the main flame
will be off leaving only the pilot flame on.
8. To turn off pilot light, depress knob and turn clockwise into the
'OFF' position.
Iffor any reason the Piezo spark unit fails to ignite the Pilot Flame,
proceed as follows (until such time as the piezo spark unit can be
replaced) Using a lighted match or taper, depress the control knob,
turn it to pilot keeping theknob depressed, place the lighted match
or taper in the position shown at Fig.2. above the front cover plate,
match flame being slightlyover the top edge towards the coals, you
will note the pilot flame light, keep knob depressed for I5 seconds,
repeat if necessary, then operate normally.
Match or Taper
position.
1. After turning to 'OFF' or if,for any reason, the pilot and fire are
extinguished, wait for three minutes before attempting to re-light
the fire.
2. This appliance has anaked flame.When lit, a fireguard complying with
BS 6539 or BS 6778should be used for the protection of young
children, the elderly or the Inflrm.
The Wentworth has been specially designed by Dunsley to meet
E.C.requirements for coal effect gasopen fires. The Gas/Air
injection system has been completely re-designed. All the
important features are shownin the illustrations.
A summary of the new developments are as follows:
1. Primary Air and Gas injectionsystem, goes through a stainless
steel burner.This improves the mixture, prevents burn back
and reduces combustion noise.
2.Secondary air inlets to further improve combustion and
flameeffect.
3.A re-designed rear ceramic coal bed to give a more
concentrated heat effect.
4.Ceramic Fibre front coalassembly plus Ceramic Fibre standard
coals, to give a good flame effect.
5. Additional purpose prOVidedventilation should not normally
be necessary.
Result:a very good coal effect inset fire.
DESCRIPTION
The Wentworth has been designed and manufacturEd to incorporate
two important features:
SAFETY,AND THE NATURAL LOOK OF A SOUD FUEL OPEN-FIRE
The detailed development which hasgone into the Wentworth unit
has created a gas fire which gives the authentic and pleasant look of
a real solid fuel open fire combined with the ease and the cleanliness
of gas.
With regards to safety, the gas supply is controlled by a gas controller
which has variable control on thegassupply. The main gas flow will
not operate until the pilot light is alight. The pilot light is linked with
a thermocouple safety device which stops the flow of gas should the
flame extinguish.
The gas control automatically closes down the gas flow if, for any
reason, the pilot light goes out.Thiseliminates any danger of
explosion or accidental ignition and makes theunitquite safe in use.
The pilot system is also linked to an oxygendepletion system which
prevents a dangerous situation occurring when thelevel of oxygen
to the fire is depleted due to a blocked flue or lack of primary air.
The spillage monitoring system shall not beadjusted by theinstaller
and shall not be put out of operation.When replacing the spillage
monitoring system, only original manufacturers parts shall be used.
Should the spillage monitoring system shut offthe gas to the appliance
wait three minutes before attempting to re-light theappliance. If the
appliance continues to shut off the appliance should be serviced as
soon as possible by a competent person.
The Wentworth is so easy to light withthe piezo ignition that the
pilot light does not require to be left on whenthe fire is not in use.
The pilot light is there for safety reasons and for ease of use when
turning off the fire for short periods.
THIS APPLIANCE SHOULD BE INSTALLED AND SERVICED BYA COMPETENT
PERSON IN ACCORDANCE WITH THE GAS SAFETY (INSTALLATION ANDUSE)
REGULATIONS 1994 AND IN ACCORDANCE WITH THE INSTALLATION
INSTRUCTIONS OR THE RULES IN FORCE.WE ALSO OPERATE A COMPLETE
RE-FURBISHMENT SERVICE AT A VERY REASONABLE COST. RETURNTHE
COMBUSTION UNIT TO OUR WORKS,CARRIAGE PAID - WEDO THE REST.
58004

FIG.4. FRONT
ELEVATION
FIG.5.PLAN OF BURNER BAR
••
.e.. .0
••••••••
in positiononburner bar. Push well back against fire bed retainer.
FIRE BED RETAINER
;
Q·······-ii··········cit····:····tl··········ci>··········Q
in positionin front of therear ceramic coai bed fitting inside the
Fire Bed Retainer.
NOTE:Tunnelat bottom running from front to rear to give
correct gas ignition
Required - 6 small coals,S medium coals, 7 angle coals. Coals vary a little
in size, but are easily selected.
Note coal position in FIG 6.C.and 6.D.See aiso letter chart below,which
gives positions of coals.Position coalson ceramic bed keeping the flame
holes reasonably clear.
Four small coalson back row
restingagainstconvectorback.
One small coal at each end of
third row.
M:- Five medium coals.
A:- Seven Angle coals.
S = Small Coals
M = Medium Coals
A = AngleCoals
).'. ANGLE
, ~~. COAL
'\'
J
FRONT
The angle coals must
sit on the short base,
upright with thelong
surface facingthe
front.
1.The Wentworth should be serviced at leastonce per year by a
Corgi Registered gas engineer, to ensure many yearsof trouble
free operation.
2.The chimney or flue must·be swept before installation of t};e
Wentworth.
3. The chimney or flue must be checked annually to ensure
continued clearance of combustion products and that there is
no excessive build up of soot.Any purpose-provided
ventilation should be checked periodicallyto ensurethat it is
free from obstruction.
4.The Wentworth is designed such thatit is very unlikely any
excessive soot will accumulate on any part of the fire.
S. If excessive deposits of soot are notedthe fire should beleft
to cool for three to four hours before any servicing work is
carried out.Any debris from the chimney or other sources
must be removed and anysoot formedshouldbe cleared.
Gloves should be worn.A soft brush should be used if it is
necessary to clean off any soot which may have formed on the
coals, front coal assembly, rear ceramicbed orburner.If any
large pieces of debris are found the chimney should be
inspected and the appliance fully serviced before further use,
to maintain good combustion.A vacuum cleaner may be used
after removal of the ceramic coals and supports.Ensure all gas
jet holes in the burner are clear.Do not change the layout or
alter the quantities of the coals used.
6. The rear ceramic bed is made of pure ceramicand will break if
dropped. If handled with reasonable care when placingin
position it will last indefi itely.It will not break in use.
It is precision made and designed to be placed in thecorrect
position to giveagood performance.It will not require replacing
unless it is broken. The black coat will not burn off, it can be
chipped off, if not handled with care whenremovingor replacing
for servicing. To meet this possibility we supply a small bottle
of black ceramic paint complete with touch up brush.
7. If for any reason any of the coals or fire bed are removed they
must be replaced carefully and correctly, see FIG 4,Sand
6A, B, C and D.
8.Rubbish or combustible material must not be thrown, orput,
onto the fuel bed.Do not disturb the fuelbed.
58004