Charnwood SLX20 - Manual (Page 9)

right angles to the surround.
Make a hole in the font 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.
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.
The optional add-in boiler which may be fitted in the
appliance has an 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. 4.
A double feed indirect hot water 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 stainless steel.
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.
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 same
side as the boiler tappings. One of the original sidebricks is
fitted on the other side, and the rear brick is discarded. The
firebricks are held in position by the retaining brackets.
FITTING THE FIRE
HOT WATER SYSTEM
FITTING THE
OPTIONAL ADD-IN
BOILER
Surround And Opening
Fig. 3. Limiting Dimensions Of
A
B
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
750 mm
Page 9
SLX20 9.03
Drain Cock at Lowest Point
Drain Cock
Indirect Hot Water Cylinder
Cold Water Tank
Overflow
Feed and Expansion Tank
22mm Open Vents
Overflow
Domestic Hot Water Draw Off
Fig. 4. Typical Gravity Hot Water System