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Natural Gas Models (For G20 Gas)
Burner Model
Flue Classes
N1
Classes 1 & 2
N1I
Class 1 Only
N2R
Classes 1 & 2
N2R Fireboxx350
Classes 1 & 2
N2
Classes 1 & 2
N2I
Class 1 Only
N3R
Classes 1 & 2
N3x2R Fireboxx720 Class 1 Only
N3
Class 1 Only
N3I
Class 1 Only
N4R
Classes 1 & 2
N4R Fireboxx 500
Classes 1 & 2
N4
Class 1 Only
N4I
Class 1 Only
N5R
Classes 1 & 2
N5
Class 1 Only
N5I
Class 1 Only
N6
Class 1 Only
LPG Models (For G31 Gas)
Burner Model
Flue Classes
L1
Classes 1 & 2
L2R Fireboxx 350
Classes 1 & 2
L2
Classes 1 & 2
L3R
Classes 1 & 2
L3x2R Fireboxx 720 Class 1 Only
L3
Class 1 Only
L4R Fireboxx 500
Classes 1 & 2
L4
Class 1 Only
L5
Class 1 Only
L6
Class 1 Only
a. Ensure that the builders opening, flue & hearth for the appliance are constructed from non-combustible materials, and
conform to National Regulations and Local Codes.
Models with a 6.9kW input nett or less require a minimum flue diameter of 125mm or equivalent area (Class 2) subject to
proper clearing of products of combustion i.e. no spillage.
Models over 6.9kW input nett require a minimum flue diameter 175mm or equivalent area (Class 1) subject to proper
clearing of products of combustion i.e. no spillage.
b. The flue MUST be free of any obstructions. Any dampers or restrictors MUST be removed. Some dampers are impractical to
remove; therefore they must be fixed in some way in the OPEN position.
c. The chimney/flue should be swept prior to installation of the appliance.
d. Ensure that only one fireplace is served by the flue system.
e. Ensure that the chimney/flue is continuous from inlet to termination.
f. Ensure that the chimney/flue is structurally sound, so that combustion products do not come into contact with combustible
material outside the chimney.
g. Ensure that there is a smooth tapered transition from the fireplace opening to the flue.
h. If the appliance is to be installed under a canopy, or is open on both sides, great care must be taken to ensure the
configuration is correct. If in any doubt seek expert advice.
i. CHECK FLUE PULL. Apply a smoke match to the flue opening at hearth level and observe smoke. If there is a definite flow
into the flue aperture, proceed with installation. If there is not a definite flow into the flue aperture, preheat the flue for
approximately 10 minutes and re-test. If there is still no definite flow towards the flue aperture the flue may need attention. DO
NOT FIT THE APPLIANCE, SEEK EXPERT ADVICE.
THE CONNECTION, VENTILATION REQUIREMENTS (IF ANY) & INSTALLATION OF THE APPLIANCE MUST BE IN
ACCORDANCE WITH NATIONAL REGULATIONS AND LOCAL CODES. IF IN ANY DOUBT WITH REGARD TO ANY
VENTILATION REQUIREMENTS SEEK EXPERT ADVICE. NOTE. In the UK Models with 6.9kW input nett or less do not require
additional room ventilation. In Eire all Evolution Fires require additional room ventilation. For other countries refer to National
Regulations and Local Codes.
INSTALLATION & SERVICING INSTRUCTIONS
Category
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
I
2H
Category
I
3P
I
3P
I
3P
I
3P
I
3P
I
3P
I
3P
I
3P
I
3P
I
3P
FLUE REQUIREMENTS
Gas
Injector Size
G20
460
G20
650
G20
280
G20
400
G20
510
G20
750
G20
510
G20
400 X 2
G20
700
G20
1, 050
G20
510
G20
510
G20
800
G20
1, 100
G20
510
G20
1, 000
G20
1, 200
G20
1, 200
Gas
Injector Size
G31
180
G31
180
G31
240
G31
240
G31
180x2
G31
280
G31
260
G31
320
G31
360
G31
400
VENTILATION
Page 3 of 10
(
continued)
kW Input Net
Burner Pressure
(High Flame)
(High Flame)
6
16.8 mbar
8.5
15 mbar
4.2
18.1 mbar
4.9
14 mbar
6.9
16.5 mbar
9.9
14.7 mbar
6.9
16.5 mbar
8.2
10.8 mbar
8.9
13.9 mbar
11
12 mbar
6.9
16.5mbar
6.7
16 mbar
9.3
13.7 mbar
11.2
11 mbar
6.9
16.5 mbar
10.5
11.2 mbar
11.7
10.5 mbar
11.9
10.6 mbar
kW Input Net
Burner Pressure
(High Flame)
(High Flame)
4.9
35.6 mbar
4.9
35.6 mbar
6.9
36.1 mbar
6.9
36.1 mbar
8.8
29 mbar
7.5
35.8 mbar
6.1
13.2 mbar
8.2
34.7 mbar
9
35 mbar
10.2
34.4 mbar
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