Green Heating Technology
32
2.
on the flue flange, unscrew the screw
1
and move the tapping insert
2
in such a way to tap the inlet
plug
A
only; insert the analyser sensor in the flue plug
F
, taking care of the seal of the connection;
Remark: The device placed at the top of sensor must be placed as possible in the centre of the flow
outlet: we advise you to insert well the sensor and so to extract it of 3 cm. Insert the sensor so that
the protection bow of the sensor, placed at the top, is transversal (the flow must pass through it
and directly touch the sensor).
Generate a heating request by activating the room thermostat. Be sure that the heat produced
by the boiler can be eliminated by the heating system through the radiators and/or radiant pan-
els/floor systems.
3. turn the Summer/Winter knob
to Summer position
;
4. turn the "Hot Water" knob
on the “chimneysweeper”
symbol
and wait (about 5 seconds)
that the display shows
“SE”
(SErvice) flashing (besides, the
green
lamp flashes with short light-
nings);
5. when the display shows
“SE”
flashing, turn the Hot Water knob
on the beginning of the
scale
(burner ignition at the minimum power output). The
service
indication appears on the
display, to indicate that the function is active. Besides, the
yellow
lamp turns on, indicating that
the burner is ignited;
6. making reference to the following table, check that the centre of the display shows the correct
value for the number of revolutions per minute at Qr for the
type of gas used
(you are reading
the number of fan revolutions per minute x100 at reduced flow capacity; for example, the value 14
means that the fan is rotating at 1400 rpm)
;
Heat input
Natural gas G20
Commercial propane G31
CO2 %
Fan rpm x 100
CO2 %
Fan rpm x 100
Reduced Qr
8.9 ±0.5
14 … 15
9.6 ±0.5
15 … 16
Nominal Qn
9.1 ±0.5
57 … 58
10.0 ±0.5
58 … 59
7.
the burner ignites at the reduced input. Wait for the boiler to come up to full operation (about
5 minutes). If the value of
CO
2
in the fumes, at the reduced input Qr for the
type of gas used
, is
within the range shown in the table, go to step
8
to check/adjust the nominal input, otherwise
you will have to bring the CO
2
back within the correct values, changing the offset by turning the
screw P.R. ADJ.
(the adjustment screw is inside the bushing, under the screw cap).
ATTENTION:
turn the screw 1/8 of turn at a time and then wait 1 minute to allow the CO
2
value measured by
the analyser to stabilize;
•
If the
CO
2
value is
HIGHER
than allowed,
DECREASE
the off-set by turning the screw
P.R. ADJ.
COUNTERCLOCKwise
;
•
If the
CO
2
value is
LOWER
than allowed,
INCREASE
the off-set by turning the screw
P.R. ADJ.
CLOCKwise
;
8. turn the Hot Water knob
fully clockwise to the end of the scale
(burner ignition at the
maximum power output);
9. check that the centre of the display shows the correct value for the number of rpms at Qn for the
type of gas used
(rpm x100 at nominal flow capacity; for example, the value 57 means 5700 rpm)
;
10.
the burner ignites at the reduced flow capacity. Wait for the boiler to come up to full operation
(about 5 minutes). If the
CO
2
value in the fumes at nominal input Qn for the
type of gas used
is
between the values shown in the table, turn the “Summer/Winter” knob
on
to quit the
programming mode and turn off the boiler, otherwise you will have to adjust the gas input by turn-
ing the screw R.Q. ADJ. . ATTENTION: turn the screw 1/4 - 1/2 of turn at a time,
waiting 1 minute
for the values measured to stabilize:
