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1
1
2
en
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HeatMaster TC :
664Y6800 • A
EN
FR
NL
ES
IT
DE
PL
RU
STARTING UP
CHECKING AND ADJUSTING THE BURNER
When the burner operates at full power, the CO
2
rate must be within the limits mentioned
in the technical characteristics, (see "Combustion characteristics", page 18).
Set-up conditions
•
Operating boiler
Check procedure
1. Check if the MCBA parameters are set to meet the user's requirements (see "Parameter
setting", page 7), and change them if required.
2. Put the boiler to maximum power mode (Refer to the System Control manual provided with
the boiler).
3. Using a pressure tester, check that the dynamic gas pressure at the gas valve (
2
) is at least 18
mbar.
4. Allow the appliance to heat for a few minutes until it reaches at least 60°C.
5. Measure the burner combustion by placing the flue gas analyzer probe in the measurement
unit port on the flue pipe and compare the CO and CO
2
values displayed with those indicated
in the combustion characteristics table.
6. If the CO
2
value differs by more than 0.3%, carry out the adjustment mentioned in the
procedure below.
7. Then put the boiler to the minimum power mode (Refer to the System Control manual
provided with the boiler). Allow the boiler to stabilize for a few minutes.
8. Measure the CO
2
level. It must be equal to the value at full power, or lower than that value
by 0.5% maximum. If there is a significant deviation, please contact ACV's maintenance
department.
CO
2
adjustment procedure
To adjust the CO
2
rate, rotate the venturi screw (
1
) :
• to the left (counterclockwise)
to increase the
CO
2.
rate.
• to the right (clockwise)
to decrease the
CO
2.
rate.
The CO
2
adjustment screw (1) of the HM 120 TC is a worm screw, whose rotation in a
direction causes the CO
2
rate to cyclically increase to the maximum, then decrease to
the minimum, then increase again, and so on. To adjust, monitor the value change on
the analyzer to determine whether the rotation in the selected direction causes the
CO
2
value to increase or decrease.
HeatMaster® 120 TC only
Содержание 120 TC
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