51
9.12 Chimney Sweep Function
For correct boiler operation, content of (CO2 - O2) in the combustion flue must be within tolerances indicated in
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
-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.
(*)
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.
9 - START UP PROCEDURE
Combustion
Table
Gas A (Natural Gas)
Gas E (LPG)
MAHF-100
MACF-115 & 150
MAHF-125
MAHF-165
MACF-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
240013371 REV B, [10/01/2021]
Summary of Contents for MACF-115
Page 2: ...MACF 150 ...
Page 4: ...MAHF 125 ...
Page 74: ...70 A 1 MODEL 100 Heat Only APPENDIX A WIRING DIAGRAMS 240013371 REV B 10 01 2021 ...
Page 75: ...71 A 2 MODEL 125 Heat Only APPENDIX A WIRING DIAGRAMS 240013371 REV B 10 01 2021 ...
Page 76: ...72 APPENDIX A WIRING DIAGRAMS A 3 MODEL 165 Heat Only 240013371 REV B 10 01 2021 ...
Page 77: ...73 APPENDIX A WIRING DIAGRAMS A 4 MODEL 115 Combi 240013371 REV B 10 01 2021 ...
Page 78: ...74 A 5 MODEL 150 Combi APPENDIX A WIRING DIAGRAMS 240013371 REV B 10 01 2021 ...
Page 79: ...75 A 6 MODEL 205 Combi APPENDIX A WIRING DIAGRAMS 240013371 REV B 10 01 2021 ...
Page 80: ...76 NOTES 240013371 REV B 10 01 2021 ...
Page 81: ...77 NOTES 240013371 REV B 10 01 2021 ...
Page 82: ...78 NOTES 240013371 REV B 10 01 2021 ...
Page 117: ...33 MODEL 100 Heat Only 100 HEAT ONLY WIRING DIAGRAM PN 240012875 REV C 10 01 2021 ...
Page 118: ...34 MODEL 125 Heat Only 125 HEAT ONLY WIRING DIAGRAM PN 240012875 REV C 10 01 2021 ...
Page 119: ...35 MODEL 165 Heat Only 165 HEAT ONLY WIRING DIAGRAM PN 240012875 REV C 10 01 2021 ...
Page 120: ...36 115 COMBI WIRING DIAGRAM MODEL 115 Comb PN 240012875 REV C 10 01 2021 ...
Page 121: ...37 MODEL 150 Combi 150 COMBI WIRING DIAGRAM PN 240012875 REV C 10 01 2021 ...
Page 122: ...38 MODEL 205 Combi 205 COMBI WIRING DIAGRAM PN 240012875 REV C 10 01 2021 ...
Page 127: ...43 LOW WATER CUTOFF DETAIL LOW WATER CUTOFF NO NO YES PN 240012875 REV C 10 01 2021 ...
Page 132: ...48 3 FAULT SOLUTION SECTIONS PN 240012875 REV C 10 01 2021 ...
