Measurement Modes in the Main Menu
40
Fig. 44: Measuring the ventilation loss
Fig. 45: Entering the parameters for the
ventilation loss measurement
How to perform the measurement:
NOTE!
Connect the Special Wall Temperature Probe
(see accessories) to jack 12, fig. 1.
If you do not connect any room temperature
probe, the temperature measured by the internal
probe will be adopted.
1.
In the submenu "Energy Utilization Check",
select "Ventilation Loss". Confirm with OK.
15.
Enter or control the parameters. (Nominal
power, diameter of the flue gas pipe, outside
temperature and ambient pressure)
NOTE!
The Wöhler DC 410
FLOW
is equipped with an am-
bient pressure probe, so that the meter will de-
termine the ambient pressure automatically.
Press "Procced". A message will appear: "Zeroing
pressure sensor. Remove hoses."
16.
Confirm with "OK". The pressure sensor will
be zeroed. It is important that the S-tube
probe is not connected yet.
NOTE!
Do not change the position of the meter after the
pressure sensor has been zeroed. The sensor is
extremely sensitive.
17.
Connect the S-tube probe to the Wöhler DC
410
FLOW
.
18.
Insert the closed S-tube through the meas-
urement opening into the gas line, while the
burner is working.
19.
Fix the S-tube with a cone, open it as shown
in Fig. 44: Measuring the ventilation loss
and
direct the sensors as shown in the figure.
20.
If necessary, adjust the S-tube with the
knurled screws, so that it fits into the gas line.
