Jetmaster Standard 16 User manual

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WOOD AND COAL CONVECTOR FIRE
Installation and Operating Instructions
Please leave these instructions with the customer
December 2008

Contents Page
Data Table............................................................................................................................. 1-2
INSTALLATION INSTRUCTIONS
Introduction............................................................................................................................. 3
Dimensions ....................................................................................................................... 3
Regulations....................................................................................................................... 3
Important Points To Note Before Starting Installation ....................................................... 3
Flue Outlets............................................................................................................... 3
Convection Inlet ........................................................................................................ 3
Smoke Gathering ...................................................................................................... 3
Paint .......................................................................................................................... 4
Fire Surround ............................................................................................................ 4
Installation Requirements...................................................................................................... 4
Unpacking......................................................................................................................... 4
Chimneys.......................................................................................................................... 5
Use of Existing Chimneys ......................................................................................... 5
New Chimney Breasts............................................................................................... 5
Dimensions ............................................................................................................... 5
Soundness of Flue .................................................................................................... 5
Soot Doors ................................................................................................................ 5
Termination................................................................................................................ 5
Bends ........................................................................................................................ 6
Flue Gathers ..................................................................................................................... 6
Installation Using an Existing Flue Gather........................................................................ 6
Installation Using the Jetmaster Flue Gather and Adaptors ............................................. 6
Hearths and Fire Surrounds ............................................................................................. 8
Protection of Heat and Shelves ........................................................................................ 8
Air Supply ......................................................................................................................... 9
Fitting the Firebox ................................................................................................................ 10
Preparation for Fitting ..................................................................................................... 10
Fitting the Firebox Without a Jetmaster Gather ...............................................................11
Fitting the Firebox With a Jetmaster Gather ................................................................... 12
Fitting the Wood Tray and Log Retainer ......................................................................... 14
Fitting the Basket Grate .................................................................................................. 14
Hole in the Wall Installations........................................................................................... 14
Inglenook Installations .................................................................................................... 14
The Arched Lintel............................................................................................................ 15
Fillet Plate ....................................................................................................................... 15
Commissioning..................................................................................................................... 16
After installation is complete ........................................................................................... 16
Air Supply ....................................................................................................................... 16
Smoke Draw Test............................................................................................................ 16
Notice Plate .................................................................................................................... 16
Cleaning Up .................................................................................................................... 16
Lighting After Installation................................................................................................. 16
Chimney Sweeping......................................................................................................... 16
Handing Over.................................................................................................................. 17

USERS INSTRUCTIONS
General ................................................................................................................................ 18
Warnings......................................................................................................................... 18
Safety Information................................................................................................................ 18
Chimney Sweeping......................................................................................................... 18
Chimney Fires................................................................................................................. 18
How do I know when I have a chimney fire? .................................................................. 18
What should I do if I have a chimney fire?...................................................................... 18
Important......................................................................................................................... 19
Protection of Heat and Shelves ...................................................................................... 19
Operating Instructions......................................................................................................... 20
Lighting after Installation................................................................................................. 20
Wood Burning Trays and Basket Grates ........................................................................ 20
Wood Burning Tray ......................................................................................................... 20
Lighting with Wood Burning Tray .................................................................................... 20
Basket Grates ................................................................................................................. 20
Lighting with Basket Grate.............................................................................................. 21
Use of the Throat Restrictor............................................................................................ 21
Fuels ............................................................................................................................... 21
Recommended Fuel Types............................................................................................. 22
Smokeless Fuels..................................................................................................... 22
Wood....................................................................................................................... 22
Peat......................................................................................................................... 22
Gas.......................................................................................................................... 22
Fire Screens ................................................................................................................... 22
Servicing Instructions.......................................................................................................... 23
Important......................................................................................................................... 23
Servicing ......................................................................................................................... 23
Removal and Replacement of Throat Restrictors........................................................... 23
Cleaning and Maintenance ............................................................................................. 24
Jetmaster Guarantees.......................................................................................................... 24
Jetmaster Provides Two Guarantees.............................................................................. 24
Two Year Guarantee (Registerable on Gas Fires).......................................................... 24
Ten Year Guarantee (Registerable) ................................................................................ 25
Terms and Conditions ..................................................................................................... 25
Statutory Rights .............................................................................................................. 26
Complain ts.................................................................................................................... 26
Specifications.................................................................................................................. 26
Trademark....................................................................................................................... 27
Contact Details ............................................................................................................... 27

1
DIMENSIONS
STANDARD UNIVERSAL LOW EXTRA
MODEL 16 18 500 600 700 500 600 700 700 850 1050
FRAME
WIDTH A mm 453 503 600 700 800 600 700 800 800 950 1150
ins 17
5
/819
5
/823
5
/827
1
/231
1
/223
5
/827
1
/231
1
/231
1
/237
1
/245
1
/2
HEIGHT B mm 576 576 650 650 650 550 550 550 700 750 800
ins 22
5
/822
5
/825
5
/825
5
/825
5
/821
5
/821
5
/821
5
/827
1
/229
1
/231
1
/2
FIREBOX
WIDTH C mm 398 448 550 650 750 550 650 750 750 900 1100
ins 15
5
/817
5
/821
5
/825
5
/829
1
/221
5
/825
5
/829
1
/229
1
/235
1
/243
3
/8
HEIGHT D mm 549 549 630 630 630 530 530 530 680 730 780
ins 21
5
/821
5
/824
3
/424
3
/424
3
/420
7
/820
7
/820
7
/826
3
/428
3
/430
3
/4
DEPTH E mm 350 350 355 355 355 355 355 355 405 455 505
ins 13
3
/413
3
/414 14 14 14 14 14 16 18 20
OPENING REQUIRED
WIDTH mm 407 457 580 680 780 580 680 780 780 930 1130
Ins 16 18 22
7
/826
3
/430
3
/422
7
/826
3
/430
3
/430
3
/436
5
/844
1
/2
HEIGHT mm 559 559 635 635 635 535 535 535 685 735 785
ins 22 22 25 25 25 21 21 21 27 29 31
DEPTH mm 356 356 365 365 365 365 365 365 415 465 515
ins 14 14 14
3
/814
3
/814
3
/814
3
/814
3
/814
3
/816
3
/818
3
/820
3
/8
WEIGHT Kg 37 45 53 59 68 53 59 68 76 99 133
OUTPUTS / EFFICIENCY /
TEMPERATURES
WOOD TRAY with WOOD
ROOM SIZE HEATED M³57 70 130 150 170 70 130 150 175 200 250
HEAT OUTPUT TO ROOM
WOOD (Tested to BS3250)
KW 2.9 3.6 6.5 7.5 8.5 5.0 6.5 7.5 9.5 14.9 17
TOTAL NOMINAL HEAT OUTPUT WOOD
WHEN TESTED TO EN13229: 2001
kW 5.5 8.5 15 20 X X X X X X X
NET EFFICIENCY WOOD
TO EN13229: 2001
% 49.7 46.7 46.7 46.7 X X X X X X X
FLUE GAS TEMPERATURE
TO EN13229: 2001
°C 187 <380 <380 380 X X X X X X X
FLUE GAS MASS FLOW
TO EN13229: 2001
gs¯¹28.9 X X 61.9 X X X X X X X
MEAN CO2 IN FLUE GAS
TO EN13229: 2001
% 2.42 X X 5.12 X X X X X X X
MEAN CO @ 13% O2
TO EN13229: 2001
% 0.35 0.35 0.35 0.17 X X X X X X X

DIMENSIONS
STANDARD UNIVERSAL LOW EXTRA
OUTPUTS / EFFICIENCY TEMPERATURES
BASKET with SMOKELESS FUEL
HEAT OUTPUT TO ROOM
SMOKELESS FUEL
(Tested to BS3250)
kW 2.9 3.2 5.1 5.8 6.6 4.0 5.1 5.8 6.7 10.1 12
TOTAL NOMINAL HEAT OUTPUT
SMOKELESS FUEL WHEN TESTED TO
EN13229: 2001
kW 5.9 X X X X X X X X X X
NET EFFICIENCY SMOKELESS FUEL
TO EN13229: 2001
% 52.3 X X X X X X X X X X
FLUE GAS TEMPERATURE
TO EN13229: 2001
°C210XXXXXXXXXX
FLUE GAS MASS FLOW
TO EN13229: 2001
gs¯¹23.8 X X X X X X X X X X
MEAN CO2 IN FLUE GAS
TO EN13229: 2001
% 2.73 X X X X X X X X X X
MEAN CO @ 13% O2
TO EN13229: 2001
% 0.51 X X X X X X X X X X
OUTPUTS / EFFICIENCY TEMPERATURES
BASKET with WOOD
TOTAL NOMINAL HEAT OUTPUT WOOD
WHEN TESTED TO EN13229: 2001
kW 18 X X 23.4 X X X X X X X
NET EFFICIENCY WOOD
TO EN13229: 2001
% 52.6 X X 40.3 X X X X X X X
FLUE GAS TEMPERATURE
TO EN13229: 2001
°C 400 X X 375 X X X X X X X
FLUE GAS MASS FLOW
TO EN13229: 2001
gs¯¹37.5 X X 83.8 X X X X X X X
MEAN CO2 IN FLUE GAS
TO EN13229: 2001
% 6.15 X X 4.15 X X X X X X X
MEAN CO @ 13% O2
TO EN13229: 2001
% 0.19 X X 0.18 X X X X X X X
RECOMMENDED FLUE
SQUARE mm (int.) 185 185 185 185 200 185 185 185 200 250 300
ins (int.) 7
1
/47
1
/47
1
/47
1
/48 7
1
/47
1
/47
1
/48 10 12
ROUND mm (int.) 180 200 200 200 200 200 200 200 225 250 300
ins (int.) 7 8 8 8 8 8 8 8 9 10 12
MINIMUM FLUE
MINIMUM FLUE ROUND mm (int.) 155 180 180 190 200 180 185 190 225 250 300
in (int.) 6 7 7 7
1
/28 7 7
1
/47
1
/29 10 12
MINIMUM FLUE AREA cm
2
190 250 250 285 315 250 267 285 366 507 730
in
2
30 38 38 44 50 38 42 44 57 79 113
MINIMUM FLUE DRAUGHT Pa 10 10 10 10 X 10 10 X X X X
CHIMNEY HEIGHT
ABOVE FIRE M 4.6 4.6 5.5 5.5 5.5 5.5 5.5 5.5 5.5 6.0 7.2
ft 15 15 18 18 18 18 18 18 18 20 24
AIR SUPPLY
cm
2
170 170 230 230 230 230 230 230 230 350 500
in
2
26 26 36 36 36 36 36 36 36 55 78
DIMENSIONS
STANDARD UNIVERSAL LOW EXTRA
MODEL 16 18 500 600 700 500 600 700 700 850 1050
FRAME
WIDTH A mm 453 503 600 700 800 600 700 800 800 950 1150
ins 17
5
/ 8 19
5
/ 8 23
5
/ 8 27
1
/ 2 31
1
/ 2 23
5
/ 8 27
1
/ 2 31
1
/ 2 31
1
/ 2 37
1
/ 2 45
1
/ 2
HEIGHT B mm 576 576 650 650 650 550 550 550 700 750 800
ins 22
5
/ 8 22
5
/ 8 25
5
/ 8 25
5
/ 8 25
5
/ 8 21
5
/ 8 21
5
/ 8 21
5
/ 8 27
1
/ 2 29
1
/ 2 31
1
/ 2
FIREBOX
WIDTH C mm 398 448 550 650 750 550 650 750 750 900 1100
ins 15
5
/ 8 17
5
/ 8 21
5
/ 8 25
5
/ 8 29
1
/ 2 21
5
/ 8 25
5
/ 8 29
1
/ 2 29
1
/ 2 35
1
/ 2 43
3
/ 8
HEIGHT D mm 549 549 630 630 630 530 530 530 680 730 780
ins 21
5
/ 8 21
5
/ 8 24
3
/ 4 24
3
/ 4 24
3
/ 4 20
7
/ 8 20
7
/ 8 20
7
/ 8 26
3
/ 4 28
3
/ 4 30
3
/ 4
DEPTH E mm 350 350 355 355 355 355 355 355 405 455 505
ins 13
3
/ 4 13
3
/ 4 14 14 14 14 14 14 16 18 20
OPENING REQUIRED
WIDTH mm 407 457 580 680 780 580 680 780 780 930 1130
Ins 16 18 22
7
/ 8 26
3
/ 4 30
3
/ 4 22
7
/ 8 26
3
/ 4 30
3
/ 4 30
3
/ 4 36
5
/ 8 44
1
/ 2
HEIGHT mm 559 559 635 635 635 535 535 535 685 735 785
ins 22 22 25 25 25 21 21 21 27 29 31
DEPTH mm 356 356 365 365 365 365 365 365 415 465 515
ins 14 14 14
3
/ 8 14
3
/ 8 14
3
/ 8 14
3
/ 8 14
3
/ 8 14
3
/ 8 16
3
/ 8 18
3
/ 8 20
3
/ 8
WEIGHT Kg 37 45 53 59 68 53 59 68 76 99 133
OUTPUTS / EFFICIENCY /
TEMPERATURES
WOOD TRAY with WOOD
ROOM SIZE HEATED M³57 70 130 150 170 70 130 150 175 200 250
HEAT OUTPUT TO ROOM
WOOD (Tested to BS3250)
KW 2.9 3.6 6.5 7.5 8.5 5.0 6.5 7.5 9.5 14.9 17
TOTAL NOMINAL HEAT OUTPUT WOOD
WHEN TESTED TO EN13229: 2001
kW 5.5 8.5 15 20 X X X X X X X
NET EFFICIENCY WOOD
TO EN13229: 2001
% 49.7 46.7 46.7 46.7 X X X X X X X
FLUE GAS TEMPERATURE
TO EN13229: 2001
°C 187 <380 <380 380 X X X X X X X
FLUE GAS MASS FLOW
TO EN13229: 2001
gs¯¹28.9 X X 61.9 X X X X X X X
MEAN CO2 IN FLUE GAS
TO EN13229: 2001
% 2.42 X X 5.12 X X X X X X X
MEAN CO @ 13% O2
TO EN13229: 2001
% 0.35 0.35 0.35 0.17 X X X X X X X
2

Installation Instructions
Introduction
READ THESE INSTRUCTIONS CAREFULLY BEFORE STARTING THE INSTALLATION.
CLOSE ATTENTION TO THE DETAILS OF INSTALLATION WILL ENABLE YOU TO GET
THE BEST RESULTS FROM YOUR FIRE.
NOTE: THESE INSTRUCTIONS SHOULD BE RETAINED FOR FUTURE REFERENCE.
There are three essential requirements for a successful installation.
A. The fire must be correctly fitted into the recess and surround.
B. The chimney must be of correct dimensions, be suitable for use with open fires and be
terminated clear of any possible wind effects.
C. There must be an adequate air supply of air into the room.
Dimensions
The table of installation data on pages 1 & 2 contains all the dimensional information necessary
to allow the installation to be properly planned.
Regulations
In the United Kingdom the installation must be in accordance with:-
• The Building Regulations issued by the Department of the Environment or the Building
Standards (Scotland) (Consolidation) Regulations issued by the Scottish Development
Department.
• All relevant codes of practice and relevant parts of any local regulations, including those
referring to National and European standards.
In your own interest and for safety, in the United Kingdom, it is the law that all solid fuel
appliances are installed by competent persons. The Heating Equipment Testing and Approval
Scheme (HETAS) require its members to work to recognised standards.
In other countries the installation must also conform to the national and local regulations in
force. This may include only the use of permitted fuels in some countries.
Important Points to Note Before Starting Installation
Flue Outlets
Flow from the outlets must be totally free from any obstruction.
Convection Inlet
This must never be restricted. The fire can be fitted on a small plinth for aesthetic reasons also
this will help prevent the ingestion of any ash from the hearth into the air inlet.
Smoke Gathering
The smoke from the two outlets must be gathered in as smooth a manner as is possible into the
flue, which is to serve the fire. Steps caused by lintels etc. that can cause eddies in the smokeway,
should be chamfered away, or, if space allows, filleted over to form smooth profiles.
3

Paint
The frame of the fire may require to be painted after installation to freshen the ‘keeper’ coat
with which the fire is supplied. It is strongly recommended that the shot blast finish on the frame
etc. is protected from cement and plaster splashes during installation, as these are difficult to
remove from the textured surfaces.
Fire Surrounds
Some fire surrounds require the fire to be set forward from the chimney breast or to be raised
for aesthetic reasons. Ensure that these requirements are taken into account when positioning
the fire.
Installation Requirements
The minimum height of any flue must be 4.6m measured from the top of the firebox for the 16”
and 18” standard fires. As the fire size opening becomes larger then the height will increase.
Please see the installation data table on pages 1 & 2.
The flue must not be used for any other appliance or application.
If a Jetmaster gas conversion kit is ever fitted in the firebox the damper or throat restrictor should
be removed. If removal is not possible, it must be permanently secured in the open position.
This must be in line with the Gas safety (Installation & Use) Regulations.
Any under floor vents or openings within the builders opening should be sealed off.
The surface of the hearth and fireplace floor must be sufficiently flat to ensure that a good seal
with the firebox can be made. Any excessive unevenness (uneven tiles, stone, etc.) should be
rectified.
The front face of the fireplace should be reasonably flat over the area covered by the firebox top
and side flange seals to ensure good sealing. These faces should be made good if necessary.
The appliance must not stand on combustible materials or carpets.
Unpacking
The Convector fire and the following components are packed in several cartons. Take care
when unpacking the fire to avoid accidental damage.
Ensure that all the listed items are present before commencing installation.
• Firebox.
• Poker
• Insulation
• Installation & Operating Instructions.
• Damper spanner
• Guarantee card
• Firescreen
Either:-
A - Wood Tray and Log Retainer
B – Basket Grate and Ashpan
4

Chimneys
New chimneys may be constructed using chimney blocks, insulated tubular sections or clay
liners within brick or stone. Weather the chimney is old or is newly built, its dimensions must
be adequate to support the size of fire to be installed. The larger the fire, the greater the size of
flue and the taller the chimney required. When specifying flue liners, ensure that the important
internal dimensions are stated. Some fires may operate successfully on flues smaller than
the recommended sizes, but this is normally only the case when the flue height is significantly
greater than the minimum recommended. No data is available for this calculation.
Use of Existing Chimneys
These must be swept and inspected for dimensions and soundness before starting to install
the fire.
New Chimney Breasts
Where a new chimney breast is to be built, the Jetmaster flue gather and adapter may be used
in achieving connection to the flue. The components are available for Universal, Low and Extra
Units
Dimensions
See the installation data table on pages 1 & 2 for recommended flue size and minimum chimney
height.
Soundness of Flue
The flue must be sound and free from cracks and obstructions. New flues must be lined.
All flues should be swept clean prior to installation and inspected for soundness and freedom
from blockages.
Soot Doors
The Fires are provided with removable throat restrictors to facilitate chimney sweeping and for
the removal of soot from the top of the unit. However, the provision of a soot door into the flue
will make sweeping easier.
In inglenooks where register plates are fitted, a soot door should be provided in the register for
cleaning out soot falls above this level. On outside walls, an external soot door can be fitted so
the chimney can be swept from the outside. The throat restrictor flap can then be closed during
sweeping and the soot removed by vacuum (from above).
Termination
The top of the flue should be well clear of turbulence and downdraught and preferably higher
than any overshadowing building or tree within 15m. Building regulations stipulate minimum
clearance above windows and ventilation openings. Pots should be simple, open topped and
with the same internal diameter as the flue. Unconventional pots or terminals must be so
designed that will operate satisfactorily in all wind directions. Take steps to prevent birds nesting
in the terminal.
5

Bends
The ideal flue is straight and vertical. New chimneys must not deviate more than 45º from the
vertical, but it is desirable that the deviations do not exceed 30º. Bends greater than 30º are not
allowed in pre-fabricated metal chimneys. In older chimneys bends exceeding 45º may be found
and will degrade flue performance, particularly by allowing soot deposits to accumulate in the
angles. In new flues it is essential to check that no
builders material has been left in the bends.
Flue Gathers
All fires need some type of gather to channel
the smoke to the base of the flue. If there is no
existing gather then one needs to be provided.
Gathers may be constructed from bricks, blocks
etc or can be a proprietary cast gather or fire chest.
Alternatively the Jetmaster gather may be fitted. In
nearly all cases where a gather needs to be fitted
to an existing flue then the chimney breast will
need to be cut into.
The Jetmaster fire is not a structural unit, although
very robust it is not designed to take the weight
of the flue. Therefore a structural lintel will need
to be provided for clay liners or the use of a fire
chest with built in gather lintel or in the case of pre
fabricated stainless steel chimney the chimney
manufactures recommended fixing brackets or
method must be used.
Installation Using an Existing Flue Gather
If the existing masonry gather is to be used to
channel the smoke into the flue from the top of the
fire, it must be smooth and in good condition. The
flue dimensions must be reached at least 200mm
above the top of the fire, where the flue exit is
central, and at least 500mm above the fire where
the flue exit is to one side. The shoulders of the
gather should not be at an angle of more than 45º
from vertical.
Installation Using the Jetmaster Flue
Gather and Adaptors
The Jetmaster Flue Gather and adaptor is a convenient way of achieving the efficient transfer
of smoke from the fire unit to the flue. It may be used bolted onto the firebox and the assembly
slid under the flue as shown in the diagram below. The use of a small plinth as shown in the right
hand example is recommended, as this minimises any ingestion of dust into the convected air.
6

FIRE Dim. F Dim. G Dim. H Dim. J Dim. K Dim.L
Universal/Low 500 215 250 140 144 0 251.5
Universal/Low 600 215 275 140 144 0 251.5
Universal/Low 700 215 325 140 144 0 251.5
Extra 700 215 325 178 156 34 263.5
Extra 850 265 380 219 165 25 297.5
Extra 1050 315 455 259 175 15 332.5
FIRE Dim. F Dim. G Dim. H Dim. J Dim. K Dim.L
Universal/Low 500 215 250 140 284 144 391.5
Universal/Low 600 215 275 140 284 144 391.5
Universal/Low 700 215 325 140 284 144 391.5
Extra 700 215 325 178 296 106 403.5
Extra 850 265 380 219 305 115 437.5
Extra 1050 315 455 259 315 125 472.5
7

The flue gather is not designed to support the chimney or its liners.
Normally the gather would be used in conjunction with one of the adapters, which are available
in several forms.
Type A - Forms a receptacle for the spigot of a standard size flue liner 200mm square.
Type B - Accepts the 225mm circular liner.
Type C - Is sized for nominal 200mm diameter vitreous or stainless steel flue pipe and for
200mm double skinned flexible stainless steel flue liners.
Type D - Is sized for export
Type E - Accepts the 175mm circular liner.
Type F - Accepts the 200mm circular liner.
When raised into position below the flue liner, the adapter may be supported by drilling and screw
fixing, or by use of the special adapter clamp. The adaptor has 25mm of vertical movement to
take up small variations in height.
Large adapters of similar design are available for E850 and E1050 fires. These are based upon
250mm and 300mm internal flue dimensions.
Hearths and Fire Surrounds
The floor or recess on which the fire stands shall have adequate load bearing capacity. Particular
attention shall be paid to existing constructions.
New hearths, fireplaces recesses and chimneys should be constructed to conform to Building
Regulations Part J.
Hearths, or plinths constructed to support the fire above the hearth, must be horizontal. Some
fire surrounds will require the fire to be set above hearth level, or forward of the chimney breast.
The Jetmaster decorative contemporary frame requires sufficient clearance around the firebox
to allow for the frame to fit flush with the fireplace surround. Take this into account when forming
the recess and front finished face of the fireplace for the fire.
Protection of Heat and Shelves. (Not tested under conditions of EN13229)
As on all heat producing appliances the use of flammable wall coverings directly above or to the
sides of the fire may lead to a fire hazard. Please bear this in mind when installing the appliance
or decorating.
If in doubt always consult the building regulations regarding the proximity of combustible
materials.
8

The minimum height from the top surface of the frame of the fire to the underside of any shelf
shall be as follows.
For a shelf depth of 100mm (4”) from wall – Minimum height = 300mm (12”)
For shelves of a greater depth add 50mm (2”) to the shelf height for every 25mm (1”) increase
in shelf depth.
These are Jetmaster estimated distances, in certain cases further protection may be required
to guard against heat on combustible materials, such as increasing the shelf height or shielding
with a non combustible material.
This is because of the variability of the heat produced from a solid fuel fire. It is dependent on the
quantity of fuel used and the refuelling frequency. A comparable gas or electric fire has a known
fixed input and thus a fixed output.
Air Supply
All fires require a supply of air to support combustion and to allow the chimney to draw correctly.
Air starvation will result in poor flue draw and smokiness in the room. All installations will
require a permanent dedicated air supply for the fire. Newly constructed houses, especially
those using double-glazing and employing modern draught control techniques, will need careful
planning of air entry. The size of air supply duct or ducts recommended for each fire is shown in
the installation data table pages 1 & 2.
The building regulations Part J and L must be taken into account when providing
ventilation for the fire.
Extractors or fans when operated in the same room or adjoining room of the fire may cause
problems.
If there is a fan or extractor fitted in the property then allowance for additional air may be
required.
See commissioning section.
If there is more than one appliance in the property then each appliance must be supplied with
adequate combustion air and ventilation so that all the appliances can operate simultaneously.
Bring air in to the room close to the fire. The ideal position is just to the sides of the fireplace
opening as shown. It can be split and brought up in two positions if required, one each side of
the fireplace opening.
9

DO NOT set a ventilation grille in the hearth immediately in front of the fire. The cold air entering
the room will form a cold ‘curtain’ in front of the fire and may destroy the convection of warm air
around the room.
DO NOT place an air supply inlet across the room from the fire. The draught of cold air crossing
the room will scour the room of warm air and the overall heating effect of the fire will be
reduced.
DO NOT set a ventilation grille in a position where they may become liable to blockage.
Where possible, draw air from two walls at right angles and duct to a mixing chamber beneath
the floor before it enters the room. This will reduce the influence of strong winds on the supply
of air. Where an existing floor is solid, vents may have to be provided through the walls in a
manner, which achieves conditions as close as possible to the above, perhaps, by the use of
ducting or of false skirting.
Where there is a suspended floor over a well ventilated under floor space, it may be sufficient
just to set ventilation openings through the floorboards adjacent to the chimney breast. Older
houses with the possibility of draughts entering around doors and windows will still profit from the
provision of a separate air supply as, properly placed, this will stop or reduce cold draughts.
When bringing in the air supply consideration should be given to any regulations that would
effect the position of any ducting or ventilation grilles.
Fitting the Firebox
Preparation For Fitting
If installing the fire in an existing fireplace, first remove all loose material from the recess and
measure the opening and recess to ensure that the Jetmaster fire will fit. The opening must be
high enough to allow the fire, and the flue gather if used, to be put into position, and must be
sufficiently wide to permit the fire and its insulation to pass through. The recess must be large
enough to provide a clearance of 20 - 40mm (¾” - 1½”) around the sides and back of the fire.
Cut away or build up to achieve the desired dimensions. Alternative methods of creating the
required recess size are shown in the diagram below.
Where the recess is to be newly built, form the recess to give a clearance around the sides and
back of the fire of 20 - 40mm (¾” - 1½”) to accommodate the insulation.
For details of opening sizes required. See table on pages 1 & 2.
Where the sides or back of the recess have to be built up, and the masonry flue gather of the
chimney is to be used, build up to the height of the fire only and then top with a sloping fillet of
mortar to deflect any soot fall into the top of the fire.
Check that the hearth, or new plinth where this is constructed, is horizontal.
Check that the two flue outlets on top of the fire will not be restricted.
The fire surround should be flat around the sealing area of the fire. The hearth and fireplace
opening must be flat and at the same level.
10

Fitting The Firebox Without A Jetmaster Gather
Place the fire in front of the prepared opening. Wrap the sides and back of the fire with the
insulation and hold this in place with tape.
Slide the fire into position in the prepared recess, taking care not to snag the insulation on the
sides of the opening.
Where the opening is significantly higher than the fire, the space may be filled by brickwork.
Place a layer of insulation beneath the bricks to provide an expansion joint on top of the fire. If
more than three or four courses of brick are needed, these should be supported on a lintel or
steel bar between the jambs.
A tight and effective seal must be made all round the front of the firebox. Where slate or
marble slips are used, these should be placed behind the frame to form a sliding contact and
thus allow for the expansion of the fire. Do not allow slips, marble, plaster or brickwork etc to
abut the edge of the frame or to have direct contact with the firebox as expansion of the fire
may cause them to crack. Use a strip of insulation as an expansion joint where necessary. The
box can be sealed to the opening using the insulation supplied, or similar material in either
position shown in the diagram below. A way of achieving this is to cut off a strip of the insulation
supplied and double it over until the required thickness is achieved to form an effective seal. An
alternative way is to use a proprietary ceramic rope seal of the correct size. If the front of the fire
is not sealed, air can leak into the flue and chimney performance will be impaired. The object is
to form a dry seal that will stay flexible moving with the box as it expands and contracts, yet still
keep the firebox sealed to the fireplace opening.
11

Fitting The Firebox With A Jetmaster Gather
The fitting of the firebox with the Jetmaster gather is similar to that when fitting with a concrete
gather. However, the recess must be high enough to allow the fire, and the Jetmaster gather to
be slid into position. This will involve breaking into the front of the chimney breast.
Place the fire with the gather attached in front of the prepared opening. Wrap the sides and back
of the fire/gather with the insulation and hold this in place with tape.
Slide the fire/gather into position in the prepared recess, taking care not to snag the insulation
on the sides of the opening. Once in situ then the adaptor can be joined to the flue. See section:-
Installation Using The Jetmaster Flue Gather And Adaptors. The front of the chimney-breast can
then be infilled and the cavity around the gather may be wrapped with flexible insulation or back
filled with vermiculite cement. Use strips of insulation as expansion joints where necessary.
A tight and effective seal must be made all round the front of the firebox. The box can be
sealed using the insulation supplied, in a similar manner to that Without a Jetmaster Gather. If
the front of the fire is not sealed, air could leak into the flue and chimney performance will be
impaired. The object is to form a dry seal that will stay flexible moving with the box as it expands
and contracts, yet still keep the firebox sealed. It will also help against the possibility of curing
paint fumes escaping into the room.
12

An alternative use for the Jetmaster gather is to form a permanently fixed shuttering, supported
by masonry piers. Gather support brackets may be made and fixed to the sloping sides of the
gather at a height suitable for the piers. The cavity above the gather may be wrapped with
flexible insulation or back filled with vermiculite cement.
The fire may then be slid beneath the gather and sealed in a similar manner to that without a
Jetmaster Gather.
It is essential that the system be sealed at each joint so that the only air, which can reach the
flue, is that which enters through the front of the fire. Once the sealing has been carried out,
the chimney breast may be infilled with block work. The firebox, using an expansion joint or
resilient insulation, may support three or four courses of brick but any greater quantity should be
supported on a lintel or steel bar between the jambs.
Some fires, when installed on very smooth surfaces have a tendency to creep forward after
a period of use. If this happens it can degrade the sealing arrangements and impair the flue
draw.
To prevent this a pair of pins, say 5mm in diameter may be sunk into the hearth and left to
protrude by 3mm. A matching pair of holes drilled into the base of the convection air inlet will
enable the fire to be pushed back and engaged over the pre-fitted pins.
13

Fitting the Wood Tray and Log Retainer
Slide the wood tray into the firebox. The wood tray should be fitted with the centre leg towards
the rear of the firebox. Once in position the log retainer can be attached to the front of the wood
tray. The clips on the rear of the retainer should clip over the front of the tray and the lugs at each
end of the retainer will locate behind the firebox frame each side.
Fitting the Basket Grate
The basket can be slide into the firebox centrally. It should be pushed back to the rear of the
firebox and then pulled foreword slightly by a few millimetres to allow a small air space between
the rear of the basket and the inside back of the firebox. Fit the bottom grid into the basket and
slide the ashpan under the basket.
Hole - In - The - Wall Installations
When fitting as a hole in the wall fire the following should be taken into account.
Installations without overhead mantle may be subject to hot air staining above the fire in the
same manner as a wall above a radiator.
If fitting the Jetmaster contemporary decorative frame then sufficient clearance should be
allowed around the outside of the fire for the frame to fit flat to the wall. The distance from the
top of the hearth to the underside of the firebox should be 95mm minimum.
Any hole in the wall installation will still require a hearth to be fitted.
Inglenook Installations
The fire should be set within a brick or stone recess, built within the inglenook and extending at
least to the height of the top of the flue gather. For the best possible results, the flue connection
from the top of the fire to the chimney should be made with flue liners or flue pipe sealed in to
the existing chimney where it narrows. The inglenook above the lintel should then be sealed with
a non-combustible register, or ceiling, to prevent heat loss into this space.
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Where direct connection of the flue from fire to chimney cannot be achieved, the flue liners
or flue pipe should be taken up as high as possible within the narrowing inglenook chimney,
to extend at least 2 metres (6 ft 6 in) above the register plate level. In this case the register
plate should be made of steel or aluminium and a removable section should be incorporated,
of adequate size to allow access for inspection and cleaning. The register must be air tight and
sealed around the edges, the flue connection passing through it and the inspection access
cover. The register should be supported on a framework of steel or aluminium.
Flue liners or flue pipe used must be of the correct size for the fire and must be suitable for use
with open fires. Flue pipes of aluminium or asbestos may not be used, nor may flexible pipes of
aluminium or single wall stainless steel.
The Arched Lintel
Secured to the top of the fire, the arch lintel extends 100mm (4”) in front of the frame to form
an arched support for a brick or stone facing. It can be of particular use where a deep lintel
supporting the chimney breast prevents the fire being set fully forward in the opening.
A resilient gasket, such as glass fibre, should be interposed between the fire structure and the
lintel, and between lintel and facing material, to allow movement under varying temperature and
to ensure that a seal is formed preventing air leakage into the flue if a gather is not used.
It is possible to use both an arched lintel and a Jetmaster steel flue gather.
Fillet Plate
Where the installation is to be carried out into
an existing opening which is already gathered
starting at a height not more than above
600mm above the top of the unit to be fitted, it
is not necessary to utilise the Jetmaster gather.
However, it is essential to create fillets just above
the top of the fire to prevent any falling soot or
debris from settling on top of the insulation and
any infill blockwork. This is particularly important
to the rear of series 5 Jetmaster fires that have
the 70mm chamfer at the top of the firebox.
There is an optional accessory available which
may be fitted by drilling two holes in the side of
the smoke outlets. This fillet plate enables a rear
fillet to be achieved with minimum effort and over
a range of rear clearance.
15

Commissioning
After Installation Is Complete
In your own interest and for safety, in the United Kingdom, it is the law that all solid fuel
appliances are installed by competent persons. The Heating Equipment Testing and Approval
Scheme (HETAS) require its members to work to recognised standards.
Air Supply
When commissioning the fire ensure that the air supply is adequate for the fire. Particular
attention should be observed if there is an extractor or fan in the room or adjoining room as this
may have an effect on the draw of the flue / fire. The fire should be tested with the extractor fan
on and with all inter-connecting doors to the room closed and then open. If required additional
air may be required to overcome the extractor or fan pressure.
Smoke Draw Test.
Ensure appliance is not alight.
Warm chimney for 10 minutes using a blowlamp or similar heating device.
Place a smoke pellet in the wood tray or basket grate towards the front of the opening of the fire
and ignite the pellet.
Check that the smoke is being drawn into the fire and flue and that it is discharging satisfactory
at the flue terminal.
Notice Plate
Ensure that any notice plate is provided in line with the building regulations J4. The notice
should contain information on the performance characteristics of the hearth, fireplace, flue or
chimney and is to be fixed in an appropriate place.
Cleaning Up
Immediately after installation, the visible parts of the fire should be cleaned up and painted
with a heat resistant matt black paint. Thereafter, the surfaces may be kept clean by using a
light brush to remove dust and by occasional wiping with a lint-free cloth. Annual repainting is
recommended. Do not use black leading or paint the interior of the firebox.
Lighting after installation
The Jetmaster should not be lit until all cement and plasterwork is completely dry and cured.
When installation has involved building in cement mortar allow:-
a. 7 days drying time if the house has other forms of heating.
b. At least 14 days if the installation is in a new or unoccupied property, or is fitted into a
completely new chimney breast.
Chimney Sweeping
We recommend that flues should be swept at least twice a year, during the heating season.
More frequent sweeping may be necessary where fires are burned throughout the year or where
low grade wood or bituminous coal are used as fuels. Fires are provided with removable throat
restrictors to facilitate chimney sweeping and for the removal of soot from the top of the unit.
A small boss flue brush head that will fit to standard rods may be required for the smaller
fires. These brush heads should be available from any good hardware store or through your
Jetmaster distributor. See Servicing Instructions.
16

Handing Over
- Read the Users instructions and instruct the user on the operation of the fire and cleaning
methods. Leave instructions with the user.
- The user should be told that any odours are due to the newness of materials and should
disperse after a few hours operation.
- The user should be informed that the fire should be serviced annually and the chimney
checked for flue pull and blockage.
Advice the customer on the operation of the flue damper
Advice the customer on the importance of an adequate air supply
Advice the customer on the importance of regular servicing and chimney sweeping
17