Wolf MGK-130 Technical Manual And Installation Instructions page 28

A) CO setting at the upper load
2
(emissions test mode)
• Undo the four screws from the front casing and
remove the casing.
• Remove the screw from the "flue gas" test port.
• Insert the test probe of the CO
the "flue gas" test port.
• Turn the temperature selector to
"Emissions test" .
(Illuminated status indicator ring flashes yellow.)
• Check the CO content at full load, and compare the
2
actual values with those in the table below.
• Correct the CO setting as required using the
2
gas throughput adjusting screw on the gas
combination valve in accordance with the table.
• Turn clockwise - lowers CO
• Turn anti-clockwise - raises CO
Appliance open (without casing) at upper load
Natural gas H
9.2% ± 0.2%
• Terminate the emissions test mode by returning the
temperature selector to its original position.
Test port, flue gas
Fig.: Flue gas test at the integral test port
MGK-130

Gas throughput adjusting screw (under cover)

Allen screw 3 mm for the MGK-170 - MGK-300)
Slotted screw for the MGK-130
Fig.: Gas combination valve
28
Changing the gas type / CO
test instrument into
2
content
2
content
2
MGK-170/210/250/300
B) CO adjustment at the lower load
2
(soft start)
• Restart the gas condensing boiler by pressing the
"Reset button".
• Check and if necessary correct the CO
approx. 30 s after burner start using the CO
by fine adjusting the zero point adjusting screw in
accordance with the table. Make this adjustment within
120 s of the burner start. If necessary, repeat the start
phase for setting procedures by pressing the reset
button.
• Turn clockwise - raises CO
• Turn anti-clockwise - lowers CO
Appliance open (without casing) at lower load
Natural gas H
9.0% ± 0.2%
MGK-130

Zero point adjusting screw, Tx40 Torx (under the

cover)
Fig.: Gas combination valve
settings
2
content
2
tester,
2
content
2
content
2
MGK-170/210/250/300
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