53
9.12 Chimney Sweep Function
For correct boiler operation, content of (CO
2
- O
2
) in the combustion flue must be within tolerances indicated in table below.
Combustion
Table
Gas A (Natural Gas)
Gas E (LPG)
MAH-100
MAC-115 & 150
MAH-125
MAH-165
MAC-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
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
to gradually adjust power (increments of
1%).
C. To exit press and hold,
and
power/reset buttons,
for at least 6 seconds.
D. If value of
CO
2
-O
2
is different, check the electrodes 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
to display instantaneous flow 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.
9 - START UP PROCEDURE
(*)
Automatically calculated from the PCB
9.14 Check Firing Rate
1.
Measure input, if a gas meter is installed in the system.
•
Turn off gas to all other appliances.
• Activate some heating zones to dissipate heat.
•
Set boiler on high fire using Chimney Sweep 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 (CO
2
%)
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
" (
flashes);
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.
240013354 REV B [09/15/2021]
Содержание MAC-115
Страница 2: ...MAC 205 ...
Страница 4: ...MAH 165 ...
Страница 77: ...73 APPENDIX A WIRING DIAGRAMS A 2 MODEL 125 Heat Only 240013354 REV B 09 15 2021 ...
Страница 78: ...74 APPENDIX A WIRING DIAGRAMS A 3 MODEL 165 Heat Only 240013354 REV B 09 15 2021 ...
Страница 79: ...75 APPENDIX A WIRING DIAGRAMS A 1 MODEL 115 Combi 240013354 REV B 09 15 2021 ...
Страница 80: ...76 APPENDIX A WIRING DIAGRAMS A 4 MODEL 150 Combi 240013354 REV B 09 15 2021 ...
Страница 81: ...77 APPENDIX A WIRING DIAGRAMS A 5 MODEL 205 Combi 240013354 REV B 09 15 2021 ...
Страница 82: ...78 NOTES 240013354 REV B 09 15 2021 ...
Страница 118: ...34 MODEL 125 Heat Only 125 HEAT ONLY WIRING DIAGRAM PN 240011430 REV P 09 15 2021 ...
Страница 119: ...35 MODEL 165 Heat Only 165 HEAT ONLY WIRING DIAGRAM PN 240011430 REV P 09 15 2021 ...
Страница 120: ...36 115 COMBI WIRING DIAGRAM MODEL 115 Combi PN 240011430 REV P 09 15 2021 ...
Страница 121: ...37 MODEL 150 Combi 150 COMBI WIRING DIAGRAM PN 240011430 REV P 09 15 2021 ...
Страница 122: ...38 MODEL 205 Combi 205 COMBI WIRING DIAGRAM PN 240011430 REV P 09 15 2021 ...
Страница 127: ...43 Low Water Cutoff Detail LOW WATER CUTOFF NO NO YES PN 240011430 REV P 09 15 2021 ...
Страница 132: ...48 3 FAULT SOLUTION SECTIONS PN 240011430 REV P 09 15 2021 ...
Страница 135: ...51 Parameter ID Changed From Changed To Date Reason PARAMETER CHANGE HISTORY PN 240011430 REV P 09 15 2021 ...
