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INSTALLATION & SERVICING INSTRUCTIONS (continued)
FLUE REQUIREMENTS
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.
VENTILATION
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.
LPG Models (For G31 Gas)
kW Input Net Burner Pressure
Burner Model Flue Classes Category Gas Injector Size (High Flame) (High Flame)
L1 Classes 1 & 2 I3P G31 180 4.9 35.6 mbar
L2R Fireboxx 350 Classes 1 & 2 I3P G31 180 4.9 35.6 mbar
L2 Classes 1 & 2 I3P G31 240 6.9 36.1 mbar
L3R Classes 1 & 2 I3P G31 240 6.9 36.1 mbar
L3x2R Fireboxx 720 Class 1 Only I3P G31 180x2 8.8 29 mbar
L3 Class 1 Only I3P G31 280 7.5 35.8 mbar
L4R Fireboxx 500 Classes 1 & 2 I3P G31 260 6.1 13.2 mbar
L4 Class 1 Only I3P G31 320 8.2 34.7 mbar
L5 Class 1 Only I3P G31 360 9 35 mbar
L6 Class 1 Only I3P G31 400 10.2 34.4 mbar
Natural Gas Models (For G20 Gas)
kW Input Net Burner Pressure
Burner Model Flue Classes Category Gas Injector Size (High Flame) (High Flame)
N1 Classes 1 & 2 I2H G20 460 6 16.8 mbar
N1I Class 1 Only I2H G20 650 8.5 15 mbar
N2R Classes 1 & 2 I2H G20 280 4.2 18.1 mbar
N2R Fireboxx350 Classes 1 & 2 I2H G20 400 4.9 14 mbar
N2 Classes 1 & 2 I2H G20 510 6.9 16.5 mbar
N2I Class 1 Only I2H G20 750 9.9 14.7 mbar
N3R Classes 1 & 2 I2H G20 510 6.9 16.5 mbar
N3x2R Fireboxx720 Class 1 Only I2H G20 400 X 2 8.2 10.8 mbar
N3 Class 1 Only I2H G20 700 8.9 13.9 mbar
N3I Class 1 Only I2H G20 1, 050 11 12 mbar
N4R Classes 1 & 2 I2H G20 510 6.9 16.5mbar
N4R Fireboxx 500 Classes 1 & 2 I2H G20 510 6.7 16 mbar
N4 Class 1 Only I2H G20 800 9.3 13.7 mbar
N4I Class 1 Only I2H G20 1, 100 11.2 11 mbar
N5R Classes 1 & 2 I2H G20 510 6.9 16.5 mbar
N5 Class 1 Only I2H G20 1, 000 10.5 11.2 mbar
N5I Class 1 Only I2H G20 1, 200 11.7 10.5 mbar
N6 Class 1 Only I2H G20 1, 200 11.9 10.6 mbar
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