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output sufficient for domestic hot
water heating. If the boiler is fitted
then the room heating will be
reduced.

The hot water system should be a
gravity circuit and must be correctly
vented as shown in Fig. 6.

A double feed indirect hot water

appliance. In some situations it may
be necessary to shield the beam or
mantelpiece to protect it.

PREPARATION OF

FIREPLACE

Before fitting the appliance into an
existing fireplace remove the fireback
and any loose in-fill material.

The hearth, surround and opening for
the appliance must conform with
Figs. 5 and 6. The flat area around
the opening must be a minimum of
750 mm wide and 660 mm high.
Ensure that the hearth and the base
in the opening are flat, level, and at
right angles to the surround.

Make a hole in the front of the
chimney breast to give access for
infilling and fixing the flue pipe. If
the optional boiler is to be fitted it
will also be necessary to make a hole
in the side of the chimney breast to
give access for the pipework.

FITTING THE FIRE

In some cases it may be necessary to
place the connecting flue pipe in the
chimney before fitting the fire into
the fireplace.

Apply fire cement to the rear face of
the sealing flange on the appliance.
Fit the appliance into the opening
ensuring that it is central and that a
good seal is made between the
sealing flange and the face of the
surround.

Remove any excess fire cement from
around the sealing flange.

The appliance should be screwed to
the hearth through the holes at the
base of the sealing flange.

HOT WATER SYSTEM

The optional add-in boiler which may
be fitted in the appliance has an

Minimum

400 mm

This Dimension Is The
Minimum Level Area
Required To Enable The
Ashpit Door To Be
Opened.
For Overall Sizes Of
Hearth See The
Section Titled "Hearth".

Of Hearth

750 mm

Surround And Opening

Dim. A:

Dim. B:

Max. 575mm (22 2/3")

Min. 555mm (21 3/4")

Max. 470mm (18 1/2")

Min. 405mm (16")

The shaded area on the face of

the surround is the minimum flat

area required.

660 mm

265 mm Minimum

Fig. 4. Limiting Dimensions

Fig. 5. Limiting Dimensions Of

storage cylinder to BS:1566 part 1
should be used in most situations,
unless the appliance is to be fitted in
a soft water area in which case a
direct hot water cylinder may be used
provided that the boiler is glass lined.

All pipework in the primary circuit
must be 28mm diameter and the flow
pipe must rise continuously from the
boiler to the open vent.

If an indirect cylinder is used then
the primary circuit should be filled
with a suitable inhibitor to prevent
the build up of scale and corrosion.

FITTING THE

OPTIONAL ADD-IN

BOILER

The boiler replaces the rear firebrick
and is reversible so that the 1" B.S.P.
male tappings may come on either
the left or the right hand side of the
boiler.

The boiler tappings protrude from the
sides of the appliance and it will
therefore be necessary to fit the boiler
into the appliance after positioning
the appliance in the fireplace if the
fire surround is already fitted.

Before fitting the boiler, remove the
front firebars, the side and back fire
plates and the firebricks. Knock out
the knock-outs for the boiler tappings
on the appropriate side of the firebox.

Remove the backnuts and fibre
washers from the boiler tappings and
fit the boiler into the appliance. Place
the fibre washers over the tappings
on the outside of the appliance and fit
the backnuts, ensuring that the boiler
is held tightly against the rear inside
face of the appliance and that the top
edge of the boiler is level or runs
uphill to the flow tapping.

When re-fitting the firebricks, note
that the short side firebrick supplied
with the boiler must be fitted on the

Page 8

HV 7/96

Summary of Contents for DX20i MkII

Page 1: ...Operating and Installation Instructions CHARNWOOD DX20i MkII Multifuel Roomheater Bishops Way Newport Isle Of Wight PO3O 5WS U K Tel 01983 537799 Fax 01983 537788 ...

Page 2: ...table Coal Housecoal doubles trebles or cobbles may all be burnt Do not use singles small nuts or coal dust It is important that large size coal is used i e larger than 50mm or 2 in size The coal should be dry When burning bituminous coal a little extra care is needed Please take note of the section Special Points For Burning Coal Wood Only dry well seasoned wood should be burnt on this appliance ...

Page 3: ...ignited then load with more fuel close the doors and adjust the thermostat and airwash control to the desired setting Leaving the main doors slightly ajar when lighting will keep the glass clean while the airwash is warming up On initial lighting the fire may smoke and give off an odour as the silicon paint with which the firebox is painted reacts to the heat This is normal and will cease after a ...

Page 4: ...to the ashpan and should therefore be avoided Clinker should regularly be removed from the firebed After riddling the grate should be put back into the solid fuel or wood position as required the tool should be horizontal for solid fuel or vertical for wood or peat REFUELLING Keep the firebox well filled the fuel may be sloped up from the front firebars but do not allow fuel to spill over the top ...

Page 5: ...posits on the glass may be burnt off simply by running the fire at a fast rate for a few minutes Do not use abrasive cleaners or pads as these can scratch the surface which will weaken the glass and cause premature failure Aerosol spray cleaners should not be used near the appliance whilst it is under fire If the fire is going to be out of use for a long period for instance in the summer then to p...

Page 6: ...mneys The following points should be noted and with a little care should enable the glass to be kept clean in most situations a The airwash relies on a supply of heated air to keep the glass clean therefore when lighting the stove allow the firebed to become well established before turning the thermostat down This may also be necessary when re fuelling the stove b When re fuelling keep the fuel as...

Page 7: ...L SQUARE If an existing chimney is to be used it must be swept and checked it must be in good condition free from cracks and blockages and should not have an excessive cross sectional area e g greater than 250mm x 250mm If you find that the chimney is in poor condition then expert advice should be sought regarding the necessity of having the chimney lined If it is found necessary to line the chimn...

Page 8: ...erall SizesOf Hearth SeeThe Section Titled Hearth Of Hearth 750 mm Surround And Opening Dim A Dim B Max 575mm 22 2 3 Min 555mm 21 3 4 Max 470mm 18 1 2 Min 405mm 16 Theshaded areaon thefaceof thesurround istheminimum flat arearequired 660 mm 265 mm Minimum Fig 4 Limiting Dimensions Fig 5 Limiting Dimensions Of storage cylinder to BS 1566 part 1 should be used in most situations unless the appliance...

Page 9: ...in any way and that all joints are well sealed Before infilling cover the front of the appliance to protect it Ensure that the flue pipe is central and then fill the space between the body of the appliance and the structural brickwork with vermiculite e g micafil or similar concrete Ensure that there are no air pockets The recommended mix is six volumes of vermiculite granules to one volume of por...

Page 10: ... lighting check the following points 1 The bottom grate bars must all be fitted and should move freely and easily when the riddling mechanism is operated 2 The plates round the sides and back of the grate must be in position and sitting correctly 3 The throat plate must be fitted in the roof of the appliance COMMISSIONING On completion of the installation and after allowing a suitable period of ti...

Page 11: ...506 265 405 120 260 200 547 i d 400 260 150 84 604 620 Optional Boiler May BeFitted WithThe1 B S P MaleTappings OnTheLeft Or TheRight CharnwoodDX20i MkII Overall Dimensions Dimensionsarein mm Page 11 HV 7 96 ...

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