Bellfires MEDIUM 3 CF/LF Guide

INSTALLATION INSTRUCTIONS &
MANUAL FOR MAINTENANCE
CORNER BELL
MEDIUM 3 CF/LF
Gas fires with closed combustion system
This document is an essential part of your gas fire.
Read it carefully before installation and maintenance of the
gas fire and keep it in a safe place!
Bellfires wishes you many cosy evenings with your new Bellfires gas fire
Serial number:
Production date:

14
Bellfires English
Installation instructions
Figure 4: Vertical roof-mounted outlet without bend
ALL SIZES INCLUDE THE LENGTH OF THE ROOF OR WALL TERMINATION
18
10, 11, 12, 13
1
4
Y
28
16
17
16
24
23
24
23
(100)
RIGID CONCENTRIC FLUE Ø100 mm - Ø150 mm SYSTEM CONNECTION
POSSIBILITIES
Appliance: Concentric flue connection Ø100-Ø150 mm or Ø130-Ø200 mm
Item descriptions:
see 1.6.2
Assemble restriction plate:
Appliance: Distance Y Concentric Concentric
(min.-max.) connection connection
on appliance is on appliance is
Ø100-Ø150 mm Ø130-Ø200 mm
2.0 - 4.0 m Width: Width:
B = 30 mm B = 65 mm
Corner Bell Medium 3 L/R
4.0 - 12.0 m Width: Width:
B = 40 mm B = 80 mm

15
Bellfires English
Installation instructions
Figure 5: Vertical roof-mounted outlet with bend
(*) : (Y1+ Y2) : X > 2 : 1
(Vertical to horizontal ratio (or 45° upwards) is always at least 2 to 1)
ALL SIZES INCLUDE THE LENGTH OF THE ROOF OR WALL TERMINATION
16
23
Y2
X
10, 11, 12, 13
14, 15
Y1
4
1
28
23
23
17
24
(100)
Item descriptions:
see 1.6.2
Assemble restriction plate:
Appliance: Distance Y1(*) Distance X (*) Distance Y1+ Y2(*) Concentric Concentric
(min.-max.) (min.-max.) (min.-max.) connection connection
on appliance is on appliance is
Ø100-Ø150 mm Ø130-Ø200 mm
Corner Bell 1.0 - 11.0 m 0 - 3.0 m 1.0 - 11.0 m -Width:
Medium 3 L/R B = 40 mm

16
Bellfires English
Installation instructions
Figure 6: Vertical chimney outlet using an existing lined chimney
(Flexible Ø100 mm and/or rigid Ø100 mm / Ø150 mm)
ALL SIZES INCLUDE THE LENGTH OF THE ROOF OR WALL TERMINATION
(100)
1
4
28
32
18
23
25
26
29
7
5
29
30
10, 11, 12, 13
Y
Item descriptions:
see 1.6.2
Assemble restriction plate:
Appliance: Distance Y Concentric Concentric
(min.-max.) connection connection
on appliance is on appliance is
Ø100-Ø150 mm Ø130-Ø200 mm
2.0 - 4.0 m Width: Width:
B = 30 mm B = 65 mm
Corner Bell Medium 3 L/R
4.0 - 12.0 m Width: Width:
B = 40 mm B = 80 mm
Appliance: Concentric flue connection Ø100-Ø150 mm or Ø130-Ø200 mm
FLEXIBLE CONCENTRIC FLUE Ø100 mm - Ø150 mm SYSTEM CONNECTION
POSSIBILITIES

17
Bellfires English
Installation instructions
Figure 7: Vertical chimney outlet using a lined chimney with a bend > 45°
(Flexible Ø100 mm and/or rigid Ø100 mm / Ø150 mm)
(*) : (Y1+ Y2+ Y3) : X > 2 : 1
(Vertical to horizontal ratio (or 45° upwards) is always at least 2 to 1)
ALL SIZES INCLUDE THE LENGTH OF THE ROOF OR WALL TERMINATION
Y2
Y1
10, 11, 12, 13
> 45°
X
Y3
32
18
30
29
5
7
29
26
25
23 28
4
1
(100)
Item descriptions:
see 1.6.2
Assemble restriction plate:
Appliance: Distance Y1(*) Distance X (*) Distance Y1+ Y2 + Y3(*) Concentric Concentric
(min.-max.) (min.-max.) (min.-max.) connection connection
on appliance is on appliance is
Ø100-Ø150 mm Ø130-Ø200 mm
Corner Bell 1.0 - 11.0 m 0 - 3.0 m 1.0 - 11.0 m -Width:
Medium 3 L/R B = 40 mm

18
Bellfires English
Installation instructions
Figure 8: Vertical chimney outlet using an existing unsound lined
chimney or when no chimney liners are present
(Flexible Ø100 mm / Ø150 mm)
ALL SIZES INCLUDE THE LENGTH OF THE ROOF OR WALL TERMINATION
Y
7
6
8
1832
31
29
30
29
26
29
27
28
29
4
1
(100)
Item descriptions:
see 1.6.2
Assemble restriction plate:
Appliance: Distance Y Concentric Concentric
(min.-max.) connection connection
on appliance is on appliance is
Ø100-Ø150 mm Ø130-Ø200 mm
2.0 - 4.0 m Width: Width:
B = 30 mm B = 65 mm
Corner Bell Medium 3 L/R
4.0 - 12.0 m Width: Width:
B = 40 mm B = 80 mm

19
Bellfires English
Installation instructions
Figure 9: Vertical chimney outlet using an existing unsound lined
chimney or when the chimney is unlined; with a bend >45o
(Flexible Ø100 mm / Ø150 mm)
(*) : (Y1+ Y2+ Y3) : X > 2 : 1
(Vertical to horizontal ratio (or 45° upwards) is always at least 2 to 1)
ALL SIZES INCLUDE THE LENGTH OF THE ROOF OR WALL TERMINATION
Y3
Y2
Y1
X
> 45°
6
8
7
31
29
32
18
30
29
26
29
27
28
29
4
1
(100)
Item descriptions:
see 1.6.2
Assemble restriction plate:
Appliance: Distance Y1(*) Distance X (*) Distance Y1+ Y2+ Y3 (*) Concentric Concentric
(min.-max.) (min.-max.) (min.-max.) connection connection
on appliance is on appliance is
Ø100-Ø150 mm Ø130-Ø200 mm
Corner Bell 1.0 - 11.0 m 0 - 3.0 m 1.0 - 11.0 m -Width:
Medium 3 L/R B = 40 mm

20
Bellfires English
Installation instructions
ALL SIZES INCLUDE THE LENGTH OF THE ROOF OR WALL TERMINATION
Wall
Termination
Position
(100)
4
28
1
Y
X19
14
10, 11, 13
0.16 m
Appliance: Concentric flue connection Ø100-Ø150 mm or Ø130-Ø200 mm
RIGID CONCENTRIC FLUE Ø100 mm - Ø150 mm SYSTEM CONNECTION
POSSIBILITIES and with wall outlet Ø100 mm - Ø150 mm
Figure 10: Horizontal wall termination
Item descriptions:
see 1.6.2
Assemble restriction plate:
Appliance: Distance Y Distance X Concentric Concentric
(min.-max.) (min.-max.) connection connection
on appliance is on appliance is
Ø100-Ø150 mm Ø130-Ø200 mm
1.0 - 2.0 m 0 - 0.6 m - -
Corner Bell Medium 3 L/R
2.0 - 3.0 m 0 - 1.6 m - -

21
Bellfires English
Installation instructions
Figure 11: Horizontal wall termination
ALL SIZES INCLUDE THE LENGTH OF THE ROOF OR WALL TERMINATION
Wall
Termination
Position
100
4
128
1
Y
X19
14
110, 111, 113
0.16 m
Appliance: Concentric flue connection Ø130-Ø200 mm
Assemble restriction plate:
Appliance: Distance Y Distance X Concentric connection on
(min.-max.) (min.-max.) appliance is Ø130-Ø200 mm
0.5 - 1.0 m 0 - 0.6 m Width: B = 40 mm
Corner Bell Medium 3 L/R
1.0 - 2.0 m 0 - 2.6 m -
Item descriptions:
see 1.6.2
RIGID CONCENTRIC FLUE Ø130 mm - Ø200 mm SYSTEM CONNECTION
POSSIBILITIES and with wall outlet Ø100 mm - Ø150 mm

22
Bellfires English
Installation instructions
ALL SIZES INCLUDE THE LENGTH OF THE ROOF OR WALL TERMINATION
Figure 12: Horizontal wall termination
Appliance: Concentric flue connection
Ø130-Ø200 mm
Assemble restriction plate:
Appliance: Distance Y Distance X Concentric connection on
(min.-max.) (min.-max.) appliance is Ø130-Ø200 mm
0.5 - 1.0 m 0 - 1.6 m -
Corner Bell Medium 3 L/R
1.0 - 3.0 m 1.6 - 4.6 m -
Item descriptions:
see 1.6.2
100
4
128
1
Y
X19
114
110, 111, 113
0.25 m
123
Wall
Termination
Position
RIGID CONCENTRIC FLUE Ø130 mm - Ø200 mm SYSTEM CONNECTION
POSSIBILITIES and with wall outlet Ø100 mm - Ø150 mm

23
Bellfires English
Installation instructions
ALL SIZES INCLUDE THE LENGTH OF THE ROOF OR WALL TERMINATION
Figure 13: Horizontal wall termination
Appliance: Concentric flue connection
Ø130-Ø200 mm
Assemble restriction plate:
Appliance: Distance Y1Distance X1Distance Y2Distance X2Concentric connection on
(min.-max.) (min.-max.) (min.-max.) (min.-max.) appliance is Ø130-Ø200 mm
0 - 0.5 m 0 - 0.5 m 0.5 - 1.0 m 0 - 0.6 m -
Corner Bell 0.5 - 1.0 m 0 - 0.5 m 0 - 0.5 m 0 - 0.6 m -
Medium 3
L/R 1.0 - 3.0 m 0 - 1.0 m 0.5 - 2.0 m 0 - 0.6 m -
1.0 - 3.0 m 0 - 3.0 m 1.0 - 3.0 m 0 - 0.6 m -
Item descriptions:
see 1.6.2
110, 111, 113
128
4
1
114
14
114
110, 113
110, 111,
113
100
19
0.16 m
Y2
X2
Y1
X1
Wall
Termination
Position
RIGID CONCENTRIC FLUE Ø130 mm - Ø200 mm SYSTEM CONNECTION
POSSIBILITIES and with wall outlet Ø100 mm - Ø150 mm

24
Bellfires English
Installation instructions
ALL SIZES INCLUDE THE LENGTH OF THE ROOF OR WALL TERMINATION
Figure 14: Horizontal wall termination
Item descriptions:
see 1.6.2
4
128
1
Y
X119
114
110, 111, 113
0.25 m
123
Wall
Termination
Position
Appliance: Concentric flue connection Ø130-Ø200 mm
RIGID CONCENTRIC FLUE Ø130 mm - Ø200 mm SYSTEM CONNECTION
POSSIBILITIES and with wall outlet Ø130 mm - Ø200 mm
Assemble restriction plate:
Appliance: Distance Y Distance X Concentric connection on
(min.-max.) (min.-max.) appliance is Ø130-Ø200 mm
0 - 0.5 m 0 - 0.6 m -
Corner Bell Medium 3 L/R 0.5 - 3.0 m 0 - 3.6 m -
1.0 - 3.0 m 3.6 - 8.6 m -

47
Bellfires English
Installation instructions
Figure 15: A clearence of at least 1 cm must be maintained between
the bottom of the appliance and the floor.
1.6.3 Gas connection
Operation (gas regulator block (and receiver)) outside the appliance (in the operating
unit):
The gas connection is situated where the operating unit is built in near to the appliance.
Use only gas piping with a minimum diameter of 1/2” and a shut-off valve.
1.6.4 Operating unit
If the appliance is fitted with an operating unit comprising gas control block and receiver,
this will be located, once it has been built in, at a maximum of 50 cm from the left or
right hand side of the appliance.
1.6.5 Convection package connections
When fitting a convection package (= convection casing and convection set (1x or 2x)),
consideration should be given to the openings at approximately 1 meter above the
appliance for the warm air exiting grids.
1.7 POSITIONING THE APPLIANCE
Important: The fireplace is constructed on a sufficiently solid floor that
can bear the weight of the appliance.
Ensure a free space of at least 1 cm between the bottom of
the appliance and the floor.
Ensure that the temperature of the floor under and in front of
the appliance can never rise above 85°C!
Make use of a temperature protection plate (of nonflammable
material) on the floor if necessary.
Take care with a floor made of a flammable material.
Min.1 cm

48
Bellfires English
Installation instructions
Never position the appliance directly against the rear wall,
but always place an nonflammable insulation plate, at least
12 mm thick, between the appliance and the rear wall, with
free space on either side of 2 cm. (Total ± 5 cm.)
The rear wall must be made of nonflammable material.
Never use combustible materials during the installation.
Ventilate the fireplace, by allowing vents above and
below the fireplace.
During installation of the gas fire, a clearance of 3 mm
should be maintained on all sides of the appliance to
allow for expansion of the appliance during operation.
Do not insulate the appliance! Only the top and sides
may be fitted with a strip of white, loose insulation wool
(heat-resistant to 1000°C), width 15 cm max. to protect
the wall.
Do not use fibreglass or Rockwool, or any other sort of
insulating material. These emit a pungent odour.
This is considered extremely unpleasant. They may also
cause discolouring of the column.
Flammable materials, such as curtains, should not
be placed in the vicinity of the gas fire.
Minimum safe distance: 100 cm.
If desired, fit a convection package to the appliance.
(See chapter 1.1)
The appliance can be easily installed Corner Bell Medium 3 R with options:
using a set of carrying brackets • 10 cm frame (4 sided) and mantle iron
(accessory). After installing: • convection package
remove carrying brackets!

49
Bellfires English
Installation instructions
Figure 16: Appliance installed in ventilated chimney breast
Horizontal outlet of the flue gas exhaust /combustion air
supply via the wall.
Fitted with the options / accessories:
• convection package (= convection casing and 1x convection set)
• 1x extra convection set
1 Inlet opening (appliance) convection air
2 Inlet opening (grate) (chimney breast) convection air
3 Natural convection in the chimney breast
4 Outlet opening (grate) (chimney breast) natural convection air
5 Outlet opening (appliance) convection air / connection convection set (2x or 4x)
6 Outlet opening (grill convection set) (chimney breast) convection air (2x or 4x)
7 -
8 Concentric flue connection appliance; Ø130-200 mm for a horizontal wall outlet
9 Horizontal wall outlet
10 Built in operating unit with gas regulator block and receiver

50
Bellfires English
Installation instructions
Figure 17: Appliance installed in ventilated chimney breast
Vertical outlet of the flue gas exhaust / combustion air
supply via the roof.
Fitted without convection package
1 Inlet opening (appliance) convection air
2 Inlet opening (grate) (chimney breast) convection air
3 Natural convection in the chimney breast
4 Outlet opening (grate) (chimney breast) convection air (2x)
5 Concentric flue connection appliance; Ø100-150 mm for a vertical roof outlet
6 Concentric flue system; Ø100-150 mm for a vertical roof outlet
7 Built in operating unit with gas regulator block and receiver

51
Bellfires English
Installation instructions
When fitting the appliance, it can be levelled with the adjustable feet .
These adjustable feet can be reached via the openings (4x), after removing the
protective covers, in the corners of the floor of the combustion chamber.
The floor of the combustion chamber can be reached after the window and the grill
around the burner have been removed (see chapter 4).
Using an Allenkey (no. 5), the appliance can be adjusted to the required height.
- Adjustable feet seen from the bottom - Adjust height with Allenkey no. 5.
of the appliance.
Press the 4 protecting covers back into the floor.
- Position 4 protecting covers. - Protecting cover.





52
Bellfires English
Installation instructions
Position the gas supply pipe such that it can be easily mounted after installation.
Because the control system is outside the appliance, the gas pipe must lead to where
the operating unit (built in), the gas regulator block (and the receiver) assembly are
fitted.
Move the appliance until it is ± 5 cm from the rear wall and ensure it is level. Place the
nonflammable insulation plate (min. 12 mm) between the appliance and rear wall. The
appliance may not be installed against a flammable rear wall.
Attach the appliance to the rear wall with 2 wedge bolts. Use the adjustable mounting
brackets at the side of the appliance for this.
- 2x Mounting bracket.

53
Bellfires English
Installation instructions
Figure 18: Operating unit
Frame with
door (white)
Operating unit
1.7.1 Gas connection operating unit
Important: During gas connection, take care not to twist the gas
regulator block. Make sure that both the gas regulator
block and the supply pipes are not subjected to stresses.
The appliance is supplied with a built-in operating unit.
Remove the decorative edging and door of the operating unit.
Fit the separate operating unit, where the gas regulator block and receiver will be
placed, on max. 50 cm from the appliance.
The burner, gas regulator block and receiver have been fully factory assembled.
Disconnect the bracket with the gas regulator block and receiver from the appliance.
Carefully move the bracket with the gas regulator block, receiver, pipes and cables to
the operating unit. Mount the bracket at the bottom of the operating unit.
Important: Take care that no pipes get damaged and no compression fittings
come loose when moving the gas regulator block. Prevent twisting
the flexible pipes! Check all compression fittings for leaks
afterwards!
Mount the receiver in the top of the operating unit. Check afterwards that all electric
connections are properly connected.
General:
Route all piping and cables from the operating unit to the appliance through an easily
accessible hollow cavity.
During subsequent installation of the operating unit, protect the gas regulator block and
piping against encasement by cement etc.

54
Bellfires English
Installation instructions
Gas pipe
“rear burner”
Ø8 mm Flex.
Gas valve
“rear burner”
Gas pipe
“front burner”
Ø8 mm Flex.
Gas supply
connection
Gas regulator block
Thermocouple
Pilot light pipe
Ø4 mm Flex.
Thermocouple
interrupter
Figure 19: Gas regulator block and gas valve: Gas and thermocouple connections
Important : Cement and chalk can damage
the piping and can, in turn,
lead to gas leaks.
Disassembly and assembly of pipes and cables:
If necessary for mounting, all pipe compression fittings and cable connectors can be
temporarily disassembled. After mounting, carefully reassemble all pipes and cables.
Check afterwards all compression fittings for leaks and that all electric connections are
properly connected.
Important : Screw the thermocouple connection (and thermocouple
interrupter) manually into the gas regulator block. Afterwards,
carefully fasten a half turn with a spanner.
Note : Check that the flexible burner pipes are correctly connected!
The gas connection of the gas valve “rear burner” must be
connected to the “rear burner”! See Chapter 5. Switching over the
flexible burner pipes during assembly can lead to an explosive
ignition. Prevent this at all costs!