Instruction manual DXB heater
page 14
5.8
Measuring combustion values
Sample point
inside!
To Annalyser
Heater with probe
CO
2
percentage (approximate)
Nominal CO2 percentage (airtime 20°C)
Fuel type
DXB 75
DXB 100
DXB 120
Paraffin / kerosene
8.5-9.5%
9-10%
9-10%
Diesel
8.5-9.5%
9-10%
9-10%
%
%
%
%
%
%
%
%
%
1. Switch off the heater.
2. Place the probe (1) on the heater (refer to figure DX Heater with probe) and connect the
(calibrated) flue gas analysis equipment.
3. Switch on the heater and start heating manually by pressing the button on the operating
panel.
4. Allow the heater to heat for about 5 minutes.
5. Measure the CO value.
6. Measure the CO2 percentage in the flue gas.
7. Record the CO value reading and the CO2 percentage as a reference for the next
measurement.
8. If the CO value exceeds 15 ppm, or if the CO2 percentage does not correspond to the
specified percentage, refer to theCO2 percentages (average ambient temperature 20°C)
a. Check CO2 percentage if deviates by more than 1 %, check the pump pressure
also check the fuel supply for air bubbles, check the air inlet openings of the
system fan.
b. Measure the pump pressure; refer to Measuring the burner pressure.
c. Check whether the oil pipe diameter is too small.
d. Check the CO value and the CO2 percentage again following the steps outlined
above.
9. Switch off the heater.
Allow the heater to cool down and then remove the probe and the flue gas analysis equipment
