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K900000000SE 022628A0 071013
4.14
Draught Menu
The DRAUGHT menu gives access to the stack draught measurement. Being a negative pressure, in
accordance with standard UNI10845, draught must be measured using the negative pressure input P-. The
correct values for a natural draught boiler are therefore positive by definition. Before performing the
measurement the instrument allows the user to input the external air temperature as required by the standard.
Afterwards the measurement screen is reached: here the user can acquire the value displayed in order to add it
to the running analysis measurements or, alternatively, print the relevant ticket through the ‘PRINT’ menu.
NOTE: The measurement may not be accurate due to condensation inside the fumes probe. Should you
notice an inaccurate or unstable reading on the instrument, it is advisable to disconnect the fumes
probe from the instrument itself, and purge pipes by blowing with a compressor. In order to be sure
there is no humidity, it is suggested to perform the measurement by means of the transparent rubber
pipe supplied on issue.
Once the data is stored, the instrument progresses automatically from the Draught Menu to the
Analysis Menu.
NOTE: The draught values to be stored in the memory must be acquired before storing the analysis data.
Activates the Draught Menu.
4.14.1 Flow Chart - Draught Menu
Before starting the pressure zeroing sequence pay attention to remove the gas probe from the stack.
Insert the probe in the stack and measure the
draught. In order to add the draught value to those
of the ongoing analysis, please select KEEP
through the right arrow key, then press ' '. For
a printout of the ticket with the draught value,
enable the PRINT menu through the relevant key,
then proceed as in the combustion analysis
printing. A draught value acquired into memory can
be deleted by pressing again the 'draught' key: a
series of dashes will appear in place of the
measurement value; after this select the 'KEEP'
option with ' '.
Pressure zeroing is accomplished by pressing ' ' with the ZERO option highlighted in the background.
Connect the probe pressure input hose to
the instrument
P-
input.
Enter the external air temperature.
►T outdoor: 20°C
WARNING
Use P- negative
inlet
DRAFT
T outdoor:
WARNING
Use P- negative
inlet
DRAFT
20
°C
T outdoor:
WARNING
Use P- negative
inlet
DRAFT
21
°C
°C
°C
°C
0.00hPa
DRAFT
ZERO
KEEP
KEEP
KEEP
KEEP
0.00hPa
DRAFT
ZERO
ZERO
ZERO
ZERO
KEEP
KEEP
KEEP
KEEP
0.05hPa
DRAFT
ZERO
ZERO
ZERO
ZERO
KEEP
KEEP
KEEP
KEEP
►Print report
Print setup
Paper feed
Print test
Printer type
►RefO
2
Auto:001
▼
O
2
4.2
٪
CO
2
9.3
٪
λ,n 1.25
Tf 190.1C
Ta 15.4C
∆T 74.7C
Qs 8.6
٪
ηs 91.4
٪
ηt 91.4
٪
CO 146p
NO 40p
SO
2
41p
Analysis
Model
PRINT REPORT
QUIT
draft
running
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