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6 OPERATION
6.1 OPERATING CHECKS
The heating system must be correctly operated to ensure perfect combustion as far as possible with reduced
emissions of carbon monoxide, unburnt hydrocarbons and soot into the atmosphere, and to avoid hazards
and damage to people and goods.
Guide to combustion values:
FUELS %
CO
2
Flue gases temperature % CO
Gas
10
190°C
0 – 20 ppm
Gas oil
13
195°C
10 – 80 ppm
Heavy oil
13.5
200°C
50 – 150 ppm
A diagram is provided in which the system efficiency is obtained according to the flue gas temperature, the
ambient temperature and the percentage of carbon dioxide (CO
2
). Dispersions through the boiler casings are
not considered.
Example:
Fuel used ............................GAS OIL
Ambient temperature.................20 °C
%CO
2
..........................................13 %
Efficiency……...........................91.4 %
Key:
Tf
Flue gas temperature –
Ta
Ambient temperature °C –
Go
Gas oil –
Ho
Heavy oil –
G
Gas
% EFFICIENCY CHART
(significant losses only)
Tf
Ta
Go
Ho
G
Summary of Contents for REX F
Page 1: ...TECHNICAL MANUAL REX REX F REX K REX K F REX DUAL REX DUAL F PRESSURISED STEEL BOILERS...
Page 2: ......
Page 18: ...18 1 2 6 3 4 5 9...
Page 30: ......
Page 32: ...ASSEMBLY INSTRUCTIONS STAVES LINING...
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