andrews MAXXflo EVOCWH 120/302 Installation And Maintenance Manual page 41

• Use the control thumb wheel to select "Setup" page and press the thumb wheel to select "Special
operations" (see below)
• Use the thumb wheel to select the "Chimney sweep" function and use the thumb wheel to activate this
function. Select and activate "Full load" for the burner output (see below)
• If this is the fi rst time that the heat engine has been operated, allow for several ignition attempts before
ignition is achieved whilst the gas pipework is being purged of air. It may be necessary to press the reset
button to start the ignition attempts again.
• Once ignition is successful, allow at least three minutes for the heat engine to warm up fully before checking
the combustion.
• Ensure the Boiler temperature remains below 70
illustration), if necessary open water outlets to introduce cold water into the tank keeping the boiler
temperature down.
• With the heater door open, the CO
Models
MAXXfl o EVO CWH 90
MAXXfl o EVO CWH 120
• If adjustment is required, remove the dust cover of gas valve throttle adjustment screw and insert a 4mm
allen key or medium fl at blade screw driver to adjust (see illustration on next page).
Commissioning
Regional settings
Special operations
Expert
Special operations
Chimney sweep function
Burner output
Boiler temp
C during the commissioning process (see above
O
combustion fi gure for G20 will be as follows:
2
CO Maximum CO
2
9.1% (+/- 0.2%)
9.3% (+/- 0.2%)
41
(1/3)
On
Full load
36.3 C
O
Throttle screw
expected depth (mm)
130 11.6 (+/- 1.0mm)
160 11.7 (+/- 1.0mm)
MAXXfl o EVO