Start-up procedure
9
Installation instructions Logamax plus GB142-24/30/45/60 • version 10/2007
35
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z
Press the "Chimney Sweep"
d
button and hold it (for
approx. two seconds) until the display shows the decimal
point.
z
Press and hold the "Chimney Sweep"
d
and "Service"
e
buttons (for approx. five seconds) until the display
shows "
Lxx
" (e. g.
L80
).
z
Set the boiler to partial load "
L30
" by pressing the
"Chimney Sweep"
d
button (higher values) or the
"Reset"
c
button (lower values).
z
Read out the differential pressure.
The differential pressure (p
Gas
– p
Air
) must be -0.02 inch
W.C. (- 5 Pa) (±0.02 inch W.C. = ± 5 Pa) (read-out on
pressure gauge: -0.04 – 0 inch W.C. = -10 – 0 Pa).
z
Enter the value measured in the start-up report.
z
If the gas/air ratio is not correct it can be adjusted using
the adjustment screw (fig. 37, pos. 1). The adjustment
screw is located behind the cover screw.
z
Repeatedly press the "Service"
e
button until the
temperature indication is displayed.
z
Press the "Chimney Sweep"
d
button until the decimal
point is cleared from the display.
z
Switch off the heating system using the main switch.
z
Remove the measurement set-up, tighten the screw in
the burner pressure measuring nipple.
z
Switch on the heating system using the main switch.
+
= higher values
= lower values
Fig. 37
Setting the gas/air ratio