Manual Calibration Function; Aeration Function; Changing The Type Of Gas - ECR International Dunkirk DCB-75 Installation, Operation & Maintenance Manual

9.9 Manual Calibration Function:

Manual Calibration phase starts at the end of the Automatic
Calibration.
The Display shows the boiler power and adjustment of the CO2
value (parameter setting) during Manual Calibration sequence.
The process begins at minimum power.
A. After Automatic Calibration sequence with
flashing together on the display, you can adjust minimum
power combustion by pressing
to raise % CO .
2
B. When minimum power combustion is in the specified
range, press and then
C. Press to adjust ignition power combustion. Press
to lower % CO , and
2
D. When ignition power combustion is in the specified range,
press and then
E. Press to adjust maximum power combustion. Press
to lower % CO , and
2
F. When maximum power combustion is in the specified
to exit Manual Calibration Function ESC
range, press
is displayed on the sceen..
IMPORTANT INFORMATION
A. If display shows fault E118 (low pressure in hydraulic
circuit) open filling tap on appliance and restore correct
pressure.
B. If gas recognition function is interrupted due
to fault (e.g.: E133 no gas) press
reset. Then press
6 seconds) to restart the function again.
If gas recognition function is interrupted due to
overheating, restart function by pressing and holding
down together for at least 6 seconds.
C. Combustion of this appliance is factory default for
operation to Natural gas.
9.10 De-Aeration Function
Used to eliminate air inside the heating circuit when boiler
is installed or after maintenance when water is drained from
primary circuit.
1.
Press buttons
On appears on display for a few seconds, followed by
program row 312.
2.
The electronic board will activate pump on/off cycle for
10 minutes. Function will automatically stop at end of the
cycle.
3.
To manually exit this function, press
together and hold for 6 seconds.
9 - START UP PROCEDURE
to lower % CO
to reach ignition power.
to raise % CO .
2
to reach maximum power.
to raise % CO .
2
to
and (for at least
together and hold for 6 seconds.
buttons
FIGURE 9-3 - Gas Inlet Tap - Pi
, and
2
PI = Gas Supply Inlet Pressure Tap

9.11 Changing The Type Of Gas

If change of gas type is required after first installation:
• Change parameter P02. See section 9.15
Commissioning and section 9.15 Parameter Settings.
• Check minimum gas pressure is suitable for selected gas:
minimum gas pressure is determined with boiler operating
at high fire and any other appliances connected to same fuel
source operational as well (whole house load)
Gas A (NG) = 3.5" (8.7 mbar)
Gas E (LPG) = 8.0" (19.9 mbar)
• Place supplied label with indication of gas type close to
the data plate of boiler replacing the original.
• Perform Automatic Calibration Function - Section 9.8.
• Manufacturer recommends verification of CO2
concentration on the flue.
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240013501 REV A [03/15/2022]