Commissioning - Real Flame Elegance Series Installation & Operating Manual

COMMISSIONING THE POWER FLUE SYSTEM
THE INSTALLER MUST COMMISSION THE POWERFLUE SYSTEM AS PER CLAUSE H2.2.7
(AS5601.1.2013)
The correct CO
gas analysis. A check that the controls are operating in the manner specified shall be carried out.
The check shall include a simulation of fan failure.
Commissioning the powerflue system is an additional requirement to commissioning the appliance.
The appliance must also be commissioned as per AS5601.1.2013.
Sizing of the fan
In order to select a suitable fan, it is necessary to determine the volume and temperature of the
flue gases. Before this can be done the percentage of CO
If discharge is at a low level, 1% CO
values between 4% and 8% may be used. These values will give flue gas temperatures of 140°C
and 220°C respectively.
For appliances with modulating burners, the CO
when the appliance is operating at normal rate, i.e. 8% CO
The quantity of flue gases to be handled by the fan may be determined by the following simplified
formula, which is sufficiently accurate for most flue gases currently distributed. A suitable fan may
then be selected.
T
Q =
R
Where Q = volume of flue gases, litres per second
FLUE GASES - RELATIONSHIP BETWEEN % CO
concentration shall be established by adjustment of dampers and checked by flue
2
T = total gas consumption of appliances connected to flue megajoules per hour
R = desired % CO concentration by volume in the flue gases at the discharge point
2
CO % Volume Flow Rate L/s/MJ/h
2
10
9
8
7
6.7
6
5
4.4
4
3.3
3
2.2
2
1.7
1.2
1.0
0.8
0.6
0.5
2
may be used in the design formula. For other situations,
2
concentration in the flue shall be considered
2
2
VOLUME FLOW RATE & % EXCESS AIR
2
0.10
0.11
0.13
0.14
0.15
0.17
0.20
0.23
0.25
0.30
0.33
0.45
0.50
0.60
0.80
1.00
1.20
1.60
2.00
in the flue gases shall be decided.
in the combustion chamber.
Excess Air %
33
50
67
90
100
120
170
200
230
300
400
500
500
700
1000
1200
1500
2000
2600
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