51
9.12 Chimney Sweep Function
table below.
Chimney Sweep Function enables boiler to generate
maximum heating power.
After activation, boiler power % can be adjusted from
minimum (0%) to maximum (100%) in DHW mode.
A. Press and hold and at the same time for 6
seconds. When the function is enabled, displays
shows “On” for few seconds followed by program
row “303” alternating with % of boiler power.
B. Press or to gradually adjust power
(increments of 1%).
C. To exit press both buttons and together for
at least 6 seconds.
D. If value of CO
2
-O2
and their relative distances. See Figure 11-1.
If necessary, replace electrodes and position them
correctly. If problem persists, use "COMBUSTION
ADJUSTMENT FUNCTION (CO
2
%)". See Section 11
General Maintenance, Figure 11-1 Electrodes. If problem
persists, use Section 9.8 Automatic Calibration
Function, and Section 9.9 Manual Calibration
Function.
NOTICE
• Press
temperature for 15 seconds.
• Use a regularly calibrated combustion analyzer
for combustion analysis.
• During normal operation boiler performs
combustion control cycles. In this phase CO
values higher than 400 ppm can occur for brief
periods of time.
(*) Automatically calculated from the PCB
9.14 Check Firing Rate
1.
Measure input, if a gas meter is installed in the
system.
•
• Activate some heating zones to dissipate heat.
•
Function.
• Use ½, 1 or 2 cu ft dial on gas meter. Measure
time required for two or more complete
revolutions. Measure time
for one or more
minutes.
• Calculate input.
9.13 Combustion Adjustment Function (CO2%)
This function sets out to partially adjust the value of
CO
2
%. Use the following procedure:
1.
Press buttons and together for at least 6
seconds. When the function is enabled, displays
shows “On” for a few seconds followed by program
row “304” alternated with the % of boiler power;
2.
After burner is lit, boiler reverts to maximum
DHW power (100). When display shows "100" it is
possible to partially adjust value of CO
2
%;
3.
Press and . Display shows "00" alternating
with function number "304" (
4.
Press to raise or lower the amount of CO
2
(from -0.3% to +0.3%);
5.
Press to save new value. Power value "100" will
show on display again. Boiler continues operating at
maximum DHW power.
This procedure can be used to adjust CO
2
to ignition
power and minimum power by pressing after
performing step 5 above.
6.
After saving the new value (step 5 above), press
to set boiler to ignition power. Wait for value
of CO
2
to stabilize. Adjust as described in step 4 of
procedure (power value is a number <> 100 and <>
0). Repeat step 5 to save.
7.
Press to adjust boiler to minimum power. Wait
for value of CO
2
to stabilize. Go to step 4 to adjust
(power value = 00);
8.
Exit function by pressing and together for at
least 6 seconds, see step 1.
9 - START UP PROCEDURE
Combustion
Table
Gas A (Natural Gas) Gas E (LPG)
DCBF-100
DCCF-115 & 150
DCBF-125
DCBF-165
DCCF-205
All
CO2 % O2 % CO2 % O2 % CO2 % O2 % CO2 % O2 %
Maximum
power
(100%)
Nominal value 9.0 4.9 8.7 5.4 9.0 4.9 10.0 5.7
Permitted
value
8.5
– 9.5 4.0 - 5.7 8.2 – 9.3 4.3 – 6.3 8.5 – 9.5 4.0 – 5.7 9.5 – 10.5 4.9 – 6.4
Ignition
power (*)
Nominal value 8.7 5.4 8.7 5.4 8.7 5.4 10.8 4.8
Permitted
value
8.2 - 9.3 4.3 – 6.3 8.2 – 9.3 4.3 – 6.3 8.2 – 9.3 4.3 – 6.3 10.3 - 11.3 3.7 – 5.2
Minimum
power (0%)
Nominal value 8.8 5.2 8.8 5.2 9.0 4.9 9.8 6.0
Permitted
value
8.2 - 9.3 4.6 – 6.3 8.2 – 9.3 4.3 – 6.3 8.5 – 9.5 4.0 – 5.7 9.3 – 10.3 5.2 – 6.7
240013375 REV A, [07/01/2021]
To Next Page
Loading...
