Bubble Bb2 User manual

www.oilstoves.co.uk
BB2
MARINE INSTALLER INSTRUCTIONS
ISSUE 1 @ 01-0 -03

2
INDEX
1. BEFORE STARTING THE JOB. ........................................................... 3
1.FITTING OPTIONS.............................................................................................................................................................3
2. ABOUT THE STOVE...........................................................................................................................................................4
3. OPERATING PRINCIPLES. ..............................................................................................................................................4
2. SAFETY...................................................................................... 5
1. FUMES....................................................................................................................................................................................5
2. FIRE........................................................................................................................................................................................5
3. BURNS....................................................................................................................................................................................5
3. CLEARANCES ............................................................................... 5
4. VENTILATION.............................................................................. 5
5. CHIMNEY.................................................................................... 5
1-5. THE CHIMNEY RULES. ..................................................................................................................................................6
6. FUEL SUPPLY. .............................................................................. 6
1. PREAMBLE .............................................................................................................................................................................6
2. WAXING ...............................................................................................................................................................................6
3. TRIM.......................................................................................................................................................................................6
4. TANK ......................................................................................................................................................................................6
5. OIL LINE...............................................................................................................................................................................6
6. WATER CONTAMINATION ............................................................................................................................................
. REMOTE SENSING FIREVALVES..................................................................................................................................
8. ISOLATION VALVES. .......................................................................................................................................................
9. SLEEVING.............................................................................................................................................................................
10 DRIP TRAY. ..........................................................................................................................................................................
7. FIREPLACE. ................................................................................. 7
THE HEARTH............................................................................................................................................................................
FIREPROOFING. ......................................................................................................................................................................
FASTENING DOWN...............................................................................................................................................................
8. FITTING DRY STOVES. ................................................................... 7
1. SELECT LOCATION............................................................................................................................................................
2. FIT OIL TANK. ....................................................................................................................................................................8
3. RUN OIL LINE.....................................................................................................................................................................8
4. TRIAL FIREPLACE ASSEMBLY. ......................................................................................................................................8
5. TRY STOVE IN POSTION................................................................................................................................................8
6. ESTABLISH FLUE POSITION. .......................................................................................................................................8
. MARK OUT AND CUT THE ROOF PLATE. ....................................................................................................................8
8. FIT DECK FLANGE..............................................................................................................................................................8
9. FIT ABOVE DECK EXTENSION......................................................................................................................................8
. FITTING WET STOVES ................................................................... 8
2. CALORIFIERS......................................................................................................................................................................8
3. VENTING OF AIR...............................................................................................................................................................8
5. PUMPED SYSTEMS.............................................................................................................................................................9
. WATER TREATMENT. .......................................................................................................................................................9
8. DRAIN DOWN. ....................................................................................................................................................................9
9. CIRCULATING PUMP. ........................................................................................................................................................9
10. COMMISSIONING. .......................................................................
FUEL SUPPLY TANK................................................................................................................................................................9
FUEL............................................................................................................................................................................................9

3
OIL LINE .................................................................................................................................................................................10
ISOLATION VALVE.............................................................................................................................................................. 10
ELECTRICAL............................................................................................................................................................................ 10
VENTILATION....................................................................................................................................................................... 10
WATER SYSTEMS................................................................................................................................................................. 10
11. FAULT FINDING HEATING SYSTEM.................................................. 11
THE CIRCUIT DESIGN. ........................................................................................................................................................11
AIR LOCKED CIRCULATING PUMP....................................................................................................................................11
AIR LOCKED PIPEWORK.......................................................................................................................................................11
INOPERATIVE CIRCULATING PUMP................................................................................................................................11
INADEQUATE PIPE SIZEING............................................................................................................................................11
INADEQUATE CALORIFYER DESIGN. ............................................................................................................................11
INCORRECT STOVE LOCATION....................................................................................................................................... 12
OVER PUMPING...................................................................................................................................................................... 12
LACK OF PRESSURE RELEASE SAFETY VALVES. ........................................................................................................ 12
12. FAULT FINDING COMBUSTION. ...................................................... 12
1. RACING. ............................................................................................................................................................................... 12
2. FLUE VACUUM................................................................................................................................................................... 12
3. BURNER RUNS SOOTY. .................................................................................................................................................. 12
4. BURNER DOES NOT LIGHT EASILY...........................................................................................................................12
5. OIL WILL NOT ENTER THE POT................................................................................................................................. 12
6. OIL SMELLS.......................................................................................................................................................................12
. DEFLOODING A FLOODED POT................................................................................................................................... 12
8. OPERATING OIL FLOW RATES. .................................................................................................................................. 13
13. ROUTINE MAINTENANCE. ............................................................. 13
1. EVERY 4 WEEKS-:.............................................................................................................................................................. 13
2. AS REQUIRED -: ............................................................................................................................................................... 13
3. EVERY EIGHT WEEKS -: ................................................................................................................................................. 13
4. EVERY 24 WEEKS-:........................................................................................................................................................... 13
5. ONCE PER YEAR-:.............................................................................................................................................................. 13
6. EVERY TWO YEARS -: ..................................................................................................................................................... 13
. AS REQUIRED -: ............................................................................................................................................................... 13
14. WARRANTY............................................................................... 13
15. WARRANTY ITEMS NOT COVERED. .................................................. 13
DOOR GLASS.......................................................................................................................................................................... 13
LABOUR COSTS..................................................................................................................................................................... 13
TRAVELING COSTS.............................................................................................................................................................. 13
CONSEQUENTIAL LOSS. ................................................................................................................................................... 13
CONSEQUENTIAL DAMAGE..............................................................................................................................................13
Read in conjunction with the appropriate: -
1. Oil control valve leaflet.
e mail [e-mail].
www.oilstoves.co.uk
1
1. . B BE EF FO OR RE E S ST TA AR RT TI IN NG G T TH HE E J JO OB B. .
1.FITTING OPTIONS.
There are normally three different situations that the
installer may be faced with-:
A new build installation.
An established boat installation, (which has not had a
oil stove fitted).
A replacement installation, where there has been a
solid fuel stove fitted previously.
Each of the situations will present differing problems
which will be-:

4
• Where to locate the stove.
• How to deal with fireplace design.
• Where to locate the oil tank.
• How to get an oil supply to the stove.
• How to fit the chimney.
• How to connect water to the stove.
• How to disconnect and remove the stove,
easily.
The new build situation should be the easiest.
The established boat situation will require careful
attention to the sighting of the stove in relation to
flue positions and existing fittings positions.
In replacement situations it may well be necessary to
blank off the existing through roof flue position and
cut a fresh one to suit the new location.
2. ABOUT THE STOVE
3. The top of the stove can be used for warming and
cooking.
5. Standard deck flanges and traditional chimney
extensions can be used above deck.
6. The stove will provide space or combined space and
water heating.
There are two choices of boiler either a 3 or 9kW and
there are 2 x 1" BSP female sockets for water
connections to be made at the rear of the stove as
required.
8. The boilers are high water content and suitable for
pumped or gravity systems, pressurised or open
vented, provided that the systems are correctly
designed.
3. OPERATING PRINCIPLES.
1. The stove is a space heater, which burns diesel oil in
a controlled manner utilizing a chimney to discharge
the products of combustion.
2. The stove generates heat from burning oil mixed
with air in a vaporizing pot located in the bottom of
the stove.
3. Once lit, oil goes into the pot at a steady and
controlled rate via gravity flow, metered by the OIL
CONTROL VALVE the oil flow can be controlled from
minimum to maximum or any setting in between
determined by where you set the oil flow control knob.
4. Air is sucked into the pot by the natural action of
the negative pressure in the chimney and to allow the
chimney to work correctly it is essential that you have
adequate, unrestricted ventilation into the area where
the stove is situated.
5. The amount of oil that can be successfully burned is
directly proportional to the amount of air that the
chimney can draw into the pot and so to achieve
adequate combustion a balanced and appropriate flow
of both oil and air is required.
4. CONTROLS
The output of the stove is regulated by the amount of
oil allowed to go into it and this function is controlled
by the -:
OIL CONTROL VALVE (O.C.V.), which is situated at
the rear of the stove.
Turning the knob anti clockwise controls the oil flow.
The knob is located at the top rear of the stove and is
calibrated from off position (fully clockwise) through
6 graduations to maximum.
Controls for the stove will vary, depending on which
valve is fitted to it.
Depending upon its intended use the stove could be
fitted with either a ships valve (OCI 252 AY sea
going) or a (Toby DVR inland water) valve.
The control for the sea going ships valve comprises
Oil flow control only. ( OCI 252AY Ships Valve)
For thermostatic control we recommend the use of a
Teddington 90 deg C, KBB remote sensing fire valve,
with the sensing file attached to the hot pipe of the
appliance.
The control for the inland waterways version has
controls which are-:
Oil flow control.
Oil valve trip lever.
For boiler versions of the stove there are two
additional controls.
Thermostat control.
Safety Stat reset control.
The Toby oil control valve used on boiler stoves has a
built in, non electric, modulating thermostat control,
which will put the fire on to low fire when the target
temperature has been achieved.
In addition to this there is also a similar safety stat,
which will shut the burner down, should the water
exceed 80 deg C.
The safety stat re set control is lifted to reset the
valve, should the stat trip. (For details see the
separate booklet on oil valve details supplied with the
stove.)
The Toby valve has to be tripped into action by lifting
the trip lever on the side of the valve.
The flow of oil into the pot can be adjusted via the
knob on top of extension rod rising up from the oil
control valve.
8. With the increased flow of oil, extra heat is
generated, which in turn stimulates the chimney to
work harder and consequently draw more air into the
pot to maintain an adequate fuel air ratio.

5
2
2. . S SA AF FE ET TY Y. .
Take care to make sure that safety and ventilation
issues are adequately addressed.
1. FUMES
Here are the main causes of fume or smoke to leak
from the stove.
• The chimney is blocked.
• There are too many bends in the chimney.
• The above deck chimney extension is not high
enough.
• The boat is moored in a position near to high
buildings or trees and downdraughting is
occurring. (Note if downdraughting occurs open
the front doors of the boat to equalise the
pressure.)
• The chimney is not airtight.
2. FIRE
Fire can be caused by a variety of potential danger
points and because of the space limitation on boats;
this risk is ever present and must be adequately
assessed.
The main danger is the effects of heat from the stove
on combustible materials and boat occupants.
Make sure that all combustibles are adequately
protected from the effects of heat radiation.
The stove must stand on a fireproof base of minimum
thickness 25mm
Floors in front of the stove must have suitable fire
protection.
If heat shields are used around the stove or flue pipe,
space above them must be left clear to allow the heat
to rise and dissipate.
3. BURNS
During normal, day-to-day use, many parts of this
stove, pipe work, and chimney can become too hot to
touch.
Where necessary, we recommend that suitable guards
be fitted, to provide adequate protection from the
heat generated by the stove.
Always use heatproof gloves when working on or near
to a hot stove.
Always wear heatproof gloves to operate the
descalling device.
3
3. . C CL LE EA AR RA AN NC CE ES S
Combustibles must be a minimum distance of 200mm
above the top of the stove (vertical clearance) and
300mm in front of and around the stove.
Any combustible material within these distances from
the stove must be protected by a suitable heat shield.
Protection can be gained by the use of -:
• Sheet metal heat shields and spacers.
• Heat resistant boards.
Combustible materials can be-:
• Wooden furniture.
• Curtains.
• Wooden panels or frames adjacent to the flue
pipe or where it passes through the deck of
the boat.
• Carpet or flooring close to the stove.
• Items near to the stove, which could fall onto
it and ignite, should the boat suffer a slight
impact.
4
4. . V VE EN NT TI IL LA AT TI IO ON N. .
Ventilation plays a vital role in the fitting and sighting
of any stove.
The provision of ventilation for this stove is
adequately covered by the requirements of the boat
safety scheme.
25cm
2
minimum permanent ventilation, directly to
outside air, must be provided for this stove.
WARNINGS
1. Never try to relight a hot stove; wait until it
has cooled down.
Hot oil vapour is explosive.
Never try to light a flooded pot.
When attempting to light a stove, make sure that the
pot is not flooded with oil by looking into the base of
the burner.
If it is flooded remove the excess oil as per
instructions in the faultfinding section.
2. The stove must be securely fastened down so that
it can resist impact or collision and it must be level in
both directions.
3. The stove must not be operated with the door glass
panel cracked or damaged, or without the lighting port
plug fitted.
4. Unvented plumbing systems can only be installed
by suitably qualified persons.
4. A suitable and serviceable fire extinguisher should
always be readily accessible near to the appliance.
5
5. . C CH HI IM MN NE EY Y
This is the one of the most interesting problems the
installer has to deal with and as the chimney affects
most aspects of running the stove, we take time here
to list the following information for your
consideration.
The power, (
suck or vacuum the chimney can develop )

6
depends upon the following-:
• THE HEIGHT.
• THE DIAMETER.
• THE TEMPERATURE OF THE GASSES IN IT.
• THE RESISTANCE OF THE INNER SURFACE
OF THE FLUE PIPE OR PIPES.
It is obvious that on a boat all the above elements are
in short supply.
Normally, we have low flues which are small in
diameter and generally not very well insulated, coupled
with all these problems we have an other one, which is
that the boat moves across constantly changing
surroundings, through locks, into headwinds and
crosswinds, all creating major opportunity for down
draughting to occur.
Any bend in any part of the chimney or roughness on
the internal chimney wall will slow down the velocity of
rising gases and reduce the effectiveness of the
chimney.
Any slight reduction in the flue gas temperature will
reduce the chimney vacuum or pull, hence when the
stove is slowed down for all night burning, as the flue
gas cools down the chimney vacuum reduces and as the
chimney vacuum drops, the stove may well start to
burn sooty. This problem is highlighted even more
during very cold weather when the chimney can cool
down even faster.
To help control conditions of excessive vacuum the
appliance has a built in swinging barometric damper
designed to swing open and spill air into the chimney
should the vacuum suddenly increase.
The swinging damper is located at the rear of the
appliance.
1-5. THE CHIMNEY RULES.
1. Always use a top outlet for flue pipe take off.
2. Never put any bends in the flue. (To maintain a
concentric fit, we will allow a slight kick off
the stove and a similar kick into the deck
flange).
3. Always try to get the stove as low as
possible in the boat, this will allow
installation of maximum length flue pipe.
4. Always have two double walled, above deck
extensions, short for cruising and long (28inch
minimum) for mooring. Insulated extensions
are a thing of the future but it is possible to
fill the space using a vermiculite and cement
mix sealed off with flexible fire putty.
5. Fit a rotating cowl to each extension or make
one interchangeable.
6. Clean or have the chimney cleaned regularly.
(Frequency depends upon type of fuel and
length of time used).
Don’t phone in and ask for dispensations on the
rules.
6
6. . F FU UE EL L S SU UP PP PL LY Y. .
1. PREAMBLE
There are several problems relating to diesel fuel
supply, which need be adequately addressed.
2. WAXING
Cold weather waxing or thickening alters the flow
characteristics of diesel.
An adequate fuel feed supply can turn into an
inadequate one when the temperature starts to fall.
The worst scenario is fuel feed pipe 50-60 feet long in
8mm dia pipe.
The best-case scenario is a fuel pipe 4 feet long in
10mm dia with insulated lagging.
3. TRIM
A minimum pressure head of out 8" is required.
This head is measured from the base of the oil tank to
the top of the oil control valve. In some cases this
head can be affected by the ballast or trim of the
boat.
Take great care to try out all the different ballast and
trim possibilities to make sure that adequate oil feed
is always available at the outlet end of the fuel pipe
before it enters the oil control valve at the stove.
4. TANK
If the stove is fitted at the bow of the boat, a bow
tank is recommended.
The tank should comply with the requirements of the
boat safety scheme and have-:
• A conveniently sized filler
• A means of venting.
• A conveniently located, easily visible, contents
gauge.
• An isolation valve
• An easily replaceable cartridge filter.
Do not use glass filter bowls, they are not acceptable
under the boat safety scheme.
It may be necessary to add a suitable proprietary
antifreeze additive to the stove fuel for wintertime
running.
5. OIL LINE
The oil feed line starts after the fuel filter and
proceeds to the point of entry, which is where the oil
line goes into the cab or saloon of the boat.
The diameter of the oil line is dependant upon the

length of run. See 4-2 on waxing and make sure that
you have suitably sized compression fittings available.
At this point it is necessary to fit a remote sensing
fire valve, designed to shut off the oil supply, should a
fire occur near to the stove.
If the bubble stove is fitted up to the first bulkhead
it will be necessary to fit the isolation valve outside
the cabin or saloon of the boat.
6. WATER CONTAMINATION
Because of the high risk of fuel contamination with
water, we strongly recommend the fitting of a high
volume water trap in the oil supply line.
7. REMOTE SENSING FIREVALVES
The oil feed line starts after the fuel filter and
proceeds to the point of entry, which is where the oil
line goes into the cab or saloon of the boat.
At this point it is necessary to fit a remote sensing
fire valve, designed to shut off the oil supply, should a
fire occur near to the stove.
If the bubble stove is fitted up to the first bulkhead
it will be necessary to fit the isolation valve outside
the cabin or saloon of the boat.
When fitting the fire valve make sure that where the
capillary and oil line go through the bulkhead in
separate sleeved tubes, so that the capillary can be
withdrawn separately should it ever need replacing.
For fitting of long oil feed lines which pass through
bulkheads and various other parts of the boat it may
well be necessary to fit more than one fire valve,
especially where the oil line passes through an area
where a fire could occur i.e. kitchen area etc.
8. ISOLATION VALVES.
1. Two isolation valves are required, one fitted close to
the appliance and easily accessible by the user.
This valve will allow you or the service person to turn
the oil off should the need arise, and one on the oil
tank fitted before the filter again to allow you or the
service person to change the filter every year.
. SLEEVING.
Where the oil line goes through the boat
superstructure a bulkhead fitting must be used.
10 DRIP TRAY.
The stove must be fitted on a suitable impervious drip
tray.
The drip tray must cover all areas beneath the stove
and provide a catchment area for any oil leaks.
It must be made of a Non-combustible material and
have an up stand of minimum height 12.5mm.
7
7. . F FI IR RE EP PL LA AC CE E. .
Use materials, which are easy to keep clean and
fireproof such as tiles, asbestolux or vermiculite
boarding.
THE HEARTH.
The hearth must be-:
FLAT - SECURE - FIREPROOF AND LEVEL IN BOTH
DIRECTIONS.
FIREPROOFING.
The vertical walls of the fireplace must be fireproof,
suitable materials would be tiles, asbestolux sheet,
compressed vermiculite board.
FASTENING DOWN.
It is important to fix the drip tray down to the hearth
but don’t drill through it as this will allow oil to leak
from it should a spill occur.
8
8. . F FI IT TT TI IN NG G D DR RY Y S ST TO OV VE ES S. .
1. SELECT LOCATION.
2. FIT OIL TANK.
3. RUN OIL LINE.
4. TRIAL FIREPLACE ASSEMBLY.
5. TRY STOVE IN POSTION.
6. ESTABLISH FLUE POSITION.
. MARK AND CUT ROOF PLATE.
8. FIT DECK FLANGE.
9. FIT FIRESTOP SPACER.
10. TRIAL FIT FIRE.
11. TRIAL FIT EVERYTHING ELSE.
12. IF IT ALL FITS REFIT IT PERMANENTLY.
1. SELECT LOCATION.
The stove can be located in any suitable position.

8
It and the flue system must be securely fastened, so
as to withstand the normal day-to-day situations,
which will be encountered in a boat.
These could be-:
• Impact by other vessel.
• Impact into lock gate.
• The pitching and rolling effects of sailing.
•
The location must have adequate protection from the
effects of radiated and conducted heat as specified.
2. FIT OIL TANK.
The oil tank will be fitted and must comply with the
requirements of the boat safety scheme.
3. RUN OIL LINE.
Run the oil line and fit all the required components as
described.
4. TRIAL FIREPLACE ASSEMBLY.
The oil line and the fire valve sensor will have to pass
through the fireplace, make sure that you make
adequate provision for this and the remote sensing
fire valve.
5. TRY STOVE IN POSTION.
Try the stove in position and make sure that the oil
feed and remote sensing fire valve fit as required.
6. ESTABLISH FLUE POSITION.
Normally the stove will be fitted in a suitable
fireplace, this will predict the angle or direction at
which the flue pipe will have to be fitted.
It is important to make sure that the flue fits
concentrically at both the stove end and as it passes
through the fire stop spacer and deck flange.
7. MARK OUT AND CUT THE ROOF PLATE.
8. FIT DECK FLANGE.
. FIT ABOVE DECK EXTENSION.
. . F FI IT TT TI IN NG G W WE ET T S ST TO OV VE ES S
1. PREAMBLE.
Installation of the wet stove will be the same as the
dry except that when dealing with the location an
extra element comes in to the equation and that is
connecting the stove up to the heating circuit.
The stove has an integral, boiler, which can be fitted
to open vented or pressurised systems.
When connecting stoves to pressurised systems make
sure that the Toby oil control valve and matching aqua
stat are fitted. Or in the case of a OCI ships valve fit
a suitable KBB remote sensing fire valve to act as over
boil protection.
Pressure vessels should be set @ 0.5 bar for static
heads of 2 metres or less.
To facilitate removal of the stove, make sure that
there is
• Easy access to the boiler unions.
• Easy access to the drain down valve.
• Easy access to the oil connection.
• Easy access to the isolation valve.
Water can be connected to the stove via 2 x 1 inch
BSP male sockets, welded into the boiler at the rear
diagonal top and bottom.
Make sure that all the air has been vented from the
boiler and heating system before firing the stove.
When installing water heating Bubble stoves, the space
heating output will be reduced.
The boiler is high water content and suitable for
pumped or gravity systems both open vented or
pressurised.
If you are not a suitably qualified person, arrange
for a heating engineer to carry out the design and
fitting work for you.
2. CALORIFIERS.
Indirect calorifiers must be used on gravity or pumped
systems.
On gravity systems the calorifiers must be located
higher than the stove and as close as possible to it,
obviously keeping horizontal runs as short as possible.
3. VENTING OF AIR.
Gravity or Pumped systems can be fitted with open
vented or pressurised systems.
If open vented systems are used the feed and
expansion tank must be as close as possible to the
boiler and be fitted at the highest part of the circuit.
Consult an experienced boat-heating engineer for
advice on feed and expansion tanks.
To vent the system of air use automatic air vents on
all possible air lock locations.
4. PIPE WORK.
All gravity pipe work must rise on flow and fall on
return and be a minimum of 28mm dia. (35mm dia
preferred)
To reduce resistance to flow-:
• Use swept bends, do not use elbows.
• Use copper pipe work.
• Use high water content radiators.
The primary circuit must have a total length of not
more than 6 meters otherwise the recovery time of
the calorifyer will be increased beyond an acceptable
period of time.
Primary circuit pipe work must not have valves or

9
other devices that can be used to interfere with the
free flow of water.
5. PUMPED SYSTEMS
Always come off the stove with 28mm copper for a
minimum run of 350 mm before dropping on to 22mm
hep 2o
To ensure suitable flow of water through the
primaries a suitable injector tee should be used.
Great care should be taken with the positioning of the
circulating pump and the feed and expansion tank to
make sure that the water flows where it should and
that over pumping does not occur.
The heating circuit must be piped in 15 or 22mm
copper or Hep 2
o
with 15mm stabs to radiators.
Where additional radiators are fitted as heat leaks,
the pipe work must be kept as short as possible, rise
on feed and fall on return.
6. SAFETY VALVE.
A 1" safety valve must be fitted as close to the boiler
as possible (within 300mm) and the outlet from it must
be directed to a safe location so as not to present any
danger should the valve blow-off and exit steam or
boiling water.
Note
Safe location could be through the side of the boat,
with a deflector to stop any horizontal emission.
7. WATER TREATMENT.
To reduce the build up of lime scale in the primary
circuit pipe work the temperature of the water should
not be allowed to exceed 65 Deg C and a suitable
water treatment should be added, suitable water
treatment could be good quality auto antifreeze, which
also contains rust inhibitor.
Note
12 or 24-volt water circulating pumps supplied by
Harworth Heating will be damaged if suitable rust
inhibitor is not used.
8. DRAIN DOWN.
A drain down valve should be fitted at the lowest point
of the circuit.
. CIRCULATING PUMP.
On pumped systems make sure that the circulating
pump is fitted in such a way as to make it easily
replaceable, this means lock shielded valves at either
side and easy access.
When fitting these pumps to old established systems
make sure that they are drained down and flushed out.
After flushing add auto antifreeze which also contains
rust inhibitor.
1
10 0. . C CO OM MM MI IS SS SI IO ON NI IN NG G. .
If the stove has been fitted to an existing heating
system, make sure that the system is adequately
designed and complies with the details specified in
this manual.
If the heating circuit does not comply, it must be
modified, before attempting to light the stove.
Make sure that old established systems are drained
down and flushed out.
After flushing add a good quality brand of auto
antifreeze which also contains rust inhibitor.
Commissioning takes the following form:
1. PRE FIRING CHECKS.
2. LIGHTING.
3. COMMISSIONING.
SEC 1. Pre firing checks.
FUEL SUPPLY TANK
Check for leaks-stability-height-position-vent.
FUEL
Check for correct grade.
FILTER
Is it fitted-check for function and leaks?

10
OIL LINE
Check for function, positioning, material suitability and
leaks.
FIRE VALVE
Check for function and leaks.
ISOLATION VALVE
Check for function, convenience of positioning and
leaks.
Flush at least 5 litres of oil through the line to check
for contamination and to clear the oil line of
installation debris and trapped air.
Make sure that the oil feed supply pipe is level and has
no potential for air locking. (Kinks, wavy runs, and
sudden changes in level or slope).
ELECTRICAL
Check for correct fusing, location and specification of
any isolation devices.
VENTILATION
Make sure that adequate ventilation is provided in line
with boat safety scheme.
WATER SYSTEMS
Should be pre-checked for leaks and tests must be
made to make sure that water will flow freely through
the boiler and that the boiler and pump is vented and
free from trapped air.
CHIMNEY SYSTEM
Should be checked to make sure that it complies with
the relative standards, regulations and all other
instructions given.
CHIMNEY HEIGHTS
Must be a minimum of 1.8 meter for low fire use and
2.2 meter for high fire use.
CLEARANCE FROM COMBUSTABLES
Check the stove is fitted with adequate clearances
from combustibles.
SWINGING BARROMETRIC DAMPER
Check that the swinging barometric damper is swinging
freely and then returning to it’s closed position.
The damper will only be brought into use under
conditions of high chimney vacuum.
SEC 2. Lighting.
When attempting to light the stove these are the
rules, which must be followed.
1.Always make sure that the pot is not flooded with oil
by looking down into the base of the pot.
2.Never try to light the stove if it is flooded with oil.
3. Always check that oil has not leaked into the drip
tray.
4.Do not light the stove and leave it unattended until it
is settled down and stabilized into constant blue flame
combustion on low fire. (This could take 10 to 20
minutes.)
Two Ways to Light the Stove
Through the lighting port.
or
Through the front door, directly into the base of the
pot.
Lighting Into The base Of The Pot
On the first light up you may find this option better,
as you can see the oil trickle in to the pot more easily.
Use a heatproof glove when putting the catalysers
back into the pot and it is important to replace them
quickly whilst the flame is small.
Make sure that the oil is turned off.
Open the front door.
Carefully remove the coal kit,
Remove the upper catalyser and ring,
Remove the lower catalyser,
Turn the oil on and allow a small pool of oil to flow into
the pot about the size of a small biscuit, then turn
the oil off
Light a small piece of firelighter and drop it into the
oil, allow a few seconds for it to get going and then
replace the catalysers and coal kit, and close the door.
Wait for approx 1 minute until the pool of oil is alight
and then turn the oil on to minimum setting no 1.
Watch the appliance for a few minutes and you will see
the flame establish and settle down into blue flame
combustion.
Allow the burner to run for a further 10 minutes
before turning the appliance up to the higher settings.
If at any time during the ignition process large
amounts of flame can be seen, turn the oil off
immediately and wait until the flames die down
before putting the oil on again at minimum setting.
Manual Lighting Through the Lighting Port
Make sure that the oil safety cut off knob is lifted
(tripped off) via an audible click.

11
Check that the isolation valve is turned on.
Press the oil safety cut off knob down to trip the oil
on via an audible click.
Open the front door.
Remove the lighting port plug by pulling it out of its
tubular socket.
Turn the oil on to the first position via the flow
control knob and allow a small pool of oil to flow into
the pot about the size of a small biscuit.
Turn the oil off.
Cut a small piece of firelighter and stab it onto the
spike.
Light it and push it into the lighting port tube, let the
firelighter drop off the spike into the bottom of the
pot.
Replace the lighting port plug back into the tube.
Close the front door.
Turn the fuel flow on again at the lowest setting
Watch the appliance for a few minutes until it settles
down into blue flame combustion.
Allow the burner to run for a further 10 minutes
before turning the appliance up to the higher settings.
If at any time during the ignition process large
amounts of flame cane be seen, turn the oil off
immediately and wait until they die down before
putting the oil on again.
We have regular problems with air locks located in the
metering stem or in the feed pipe from the oil valve to
the pot.
Read the relative valve booklet supplied with the stove
to find out how the valve works.
Note there may be the occasional growl or audible
vibration whilst the burner settles down into blue
flame combustion.
SEC 3. Commissioning the burner.
There are two types of valve fitted to Bubble stoves
and access to the low fire adjustment is different.
On the OCI ships valve the plastic drive knob has to
be removed to gain access to the low fire screw.
On the Toby valve the low fire screw is clearly visible
as per TOBY MANUAL FIG 2
The valve has been flow rated before leaving the
factory and it should not need adjusting, if it does it is
necessary to remove the plastic drive cover (OCI
VALVE) which is held in place by a single fastener in
the side face of the knob.
Once the knob has been removed the low fire
adjusting screw is clearly visible.
When the burner has established good blue flame
combustion turn it up to half output. (Setting 3 on the
fuel flow control knob) and let it stabilize.
Allow at least half an hour for the chimney to warm up
thoroughly before making any adjustments to the high
or low fire screws.
Turn the stove down onto minimum firing rate and let
it stabilize.
After stabilization there should be a dull red glow in
the lower catalyser with wispy blue flames flicking into
and just over it.
If the flame falls into a dirty rolling yellow flame and
the catalyser is not dull red then the low fire will need
to be increased until it can support the required blue
flame combustion.
To increase the low fire oil flow, screw the adjusting
screw in by quarter turn increments.
When you are happy with the low fire, set the high
fire.
Turn the oil flow knob up to setting 4, let the flame
stabilize, and look at it, if it is stable and blue, turn it
up slowly using the control knob, letting it stabilize
after each movement, if the flame starts to go yellow
with long flame combustion, it is running fuel rich and
the high fire screw needs adjusting to reduce the flow
of oil. (Screw the adjuster screw in to reduce the high
fire oil flow.)
Before adjusting the high fire screw, turn the flame
down and let it stabilize in blue flame combustion,
adjust the high fire screw by half a turn in and try
turning the fuel flow up, if it is still fuel rich repeat
the process until the hire fire flame is running blue
with just flicks of yellow in the tips.
If the burner does not run well check that the seals in
the stove are good and that there is no ingress of air
into the stove flue ways.
Seals in stove mean:
The pot to closure plate seal.
The door seal.
Check that the correct fuel oil is being used.
1
11 1. . F FA AU UL LT T F FI IN ND DI IN NG G H HE EA AT TI IN NG G S SY YS ST TE EM M. .
If the system does not perform well check the
following-:
THE CIRCUIT DESIGN.
AIR LOCKED CIRCULATING PUMP.
AIR LOCKED PIPEWORK.
INOPERATIVE CIRCULATING PUMP.
INADEQUATE PIPE SIZEING.
INADEQUATE CALORIFYER DESIGN.

12
INCORRECT STOVE LOCATION.
The stove is fitted out of level, allowing an air pocket
to build up in the top of the boiler, causing subsequent
kettling and damage to thermostat sensing phial on
TOBY DVD valves.
Check the flow of water through-:
THE BOILER.
THE CALORIFYER.
THE RADIATORS.
Inadequate water circulation through the boiler
check-:
OVER PUMPING.
The system is not over pumping due to bad location of
the cold feed and expansion vessel.
If water were just circulating thro the feed and
expansion this would indicate incorrect circuit design.
LACK OF PRESSURE RELEASE SAFETY VALVES.
Make sure that pressure release valve are fitted in
the correct position as close as possible to the boiler.
1
12 2. . F FA AU UL LT T F FI IN ND DI IN NG G C CO OM MB BU US ST TI IO ON N. .
1. RACING.
1. Audible vibrations generated by the flame caused
allowing by too much oil in the pot, too quickly.
1-1. Turn off the oil flow until the burner has settled
down to a steady burn rate and then turn the fuel on
again but don’t let the flame go out otherwise the
burner MUST be allowed to cool down fully before a re
ignition is attempted.
2. FLUE VACUUM.
1. The pot type burner is extremely sensitive to flue
vacuum variations.
2. Good combustion will not be possible unless our
instructions on chimneys and flue vacuum are followed.
See fig1
3. If the burner does not burn with a blue flame,
recheck the chimney vacuum and oil flow rate.
4. If the burner does not run well check that the seals
in the stove are good and that there is no ingress of
air into the stove flue ways.
5. Check that the correct fuel oil is being used.
6. Check the levels.
3. BURNER RUNS SOOTY.
Comments made on this subject assume that the stove
has been running normally for some time.
If the stove soot’s up this indicates that there is not
adequate air for blue flame combustion or there is an
excess of fuel.
Check that the chimney is working correctly. (This
means pulling enough air into the burner to allow
correct blue flame combustion to occur.
Check that the fuel is the correct type and quality.
Check that the flow rates are correct.
Where burners are run at high fuel flow rates on low
chimney vacuums, long unsatisfactory yellow flame
combustion and bad sooting will occur.
To rectify this problem reduce the high fire flow rate
screw on the Oil Control Valve until blue flame
combustion occurs.
Never switch from low settings to high settings; a
longer burner life will be achieved if the regulator is
moved only by one number at a time leaving approx. one
minute between each setting change.
4. BURNER DOES NOT LIGHT EASILY.
Read the instructions in the lighting section of this
publication.
5. OIL WILL NOT ENTER THE POT.
Is there oil in the fuel tank?
Has the fire valve tripped?
Has the isolation valve been accidentally turned off?
Is the oil turned on at the oil flow control knob on the
valve?
Is the oil feed pipe from the valve to the pot?
Blocked. (Unlikely)
Has the water stat tripped off on the aqua stat?
Has the aqua-stat been damaged by overheating.
To check this out, remove the aqua-stat from the
valve and remove the phial from the boiler, re cock the
valve and test fire the appliance. See Fig 4 Toby Valve
document.
Note this type of damage is not covered by the
warranty.
6. OIL SMELLS.
Visual check on all joints for obvious leaks.
Check that the descalling lever packing gland nut is
adjusted.
7. DEFLOODING A FLOODED POT.
To carry out this procedure you will need -:
a. A small leak proof plastic bag.
b. A small sponge.
c. A larger plastic bag for disposal of the residue.
d. A pair of disposable plastic gloves.
If the pot becomes flooded, de flood it is as follows -:
Put a small plastic bag into the stove and sponge from
the pot into the bag, when the excess oil has been
removed put the plastic bag and sponge into another

13
plastic bag and dispose of it.
8. OPERATING OIL FLOW RATES.
OIL Flow rates in cc per minute.
Min Max
4cc 16cc
1
13 3. . R RO OU UT TI IN NE E M MA AI IN NT TE EN NA AN NC CE E. .
Continuous running assumed.
1. EVERY 4 WEEKS-:
Operate the descalling lever by turning it completely
two or three times.
2. AS REQUIRED -:
Clean inside of door glass.
3. EVERY EIGHT WEEKS -:
Clean the burner completely by removing all the inner
components as follows,
1. Open the front door.
2. Remove the coal kit if it has been supplied with the
stove.
3. Remove the burning ring.
4. Remove the upper and lower catalysers.
Scrape the bottom of the pot and remove all carbon
build up.
Reassemble in the reverse order.
4. EVERY 24 WEEKS-:
Tighten up the gland nut on the descaling device to
stop oil smells.
5. ONCE PER YEAR-:
Have your service man replace or clean all the filters
in the oil supply line.
6. EVERY TWO YEARS -:
Have your service man clean the filter in the Oil
Control Valve and check the function of all the safety
equipment associated with the stove, oil supply and
plumbing system.
Remove and clean out the oil supply pipe from the valve
to the pot.
7. AS REQUIRED -:
Keep the Coals, Coal kit, and burner inners in good
condition, replace as necessary.
1
14 4. . W WA AR RR RA AN NT TY Y. .
You are advised that if Harworth Heating Ltd are
called out to appliances under warranty claims, where
no appliance fault can be found, charges will be made
at the rate of £35.00 per hour, including travelling
time.
Fill in the warranty form and returned it to us, the
information recorded on the warranty form helps us to
deal with any problems you may encounter.
Where we do not hold returned warranty forms
replacement parts would only be issued when we are
sure that the stove has not been damaged by improper
use or installation.
The warranty covers PARTS ONLY for a period of
ONE YEAR and is conditional upon all the requirements
of our installation instructions being fully adhered to.
1
15 5. . W WA AR RR RA AN NT TY Y I IT TE EM MS S N NO OT T C CO OV VE ER RE ED D. .
DOOR GLASS.
LABOUR COSTS.
TRAVELING COSTS.
CONSEQUENTIAL LOSS.
CONSEQUENTIAL DAMAGE.

14
Fig 4

15
© HARWORTH HEATING LTD 30.6.98
This publication may not be copied by any means, without written permission from the authors.
This product is subject to continuous development and improvement and it is consequently acknowledged that due to this process there may be
some omissions and errors.
This publication is intended only to assist the reader in the use of this product and therefore Harworth Heating Ltd shall not be liable for any loss
or damage whatsoever arising from the use of any information, error or omission found in this guide.
Only approved personnel, WHO HAVE BEEN SUITABLY TRAINED, must carry out maintenance
on this product.