8
Wait 1 minute for the boiler to stabilize
before carrying out the combustion
analyses. Read the
CO
2
value (%) and
compare it with the values given in the
table below:
Gas
CO
2
(%)
CO
(ppm)
NG
8.
7
–
10
.0
<
175
LP
9.
7
–
11
.0
<
175
Table 3
–
CO
2
M
ax
– M
in
ATTENTION:
The
CO
2
at Min Power must be
set
low
er
than the
CO
2
at Max Power by 0.2 –
1.0%
(
e.g. if, using LP, the CO
2
at Max Power = 10.3%,
the CO
2
at Min Power must be between 9.5 – 10.1%).
ATTENTION!! Values must be obtained
with the front cover installed.
If the
CO
2
values given in
Ta
ble
3
, adjust the gas
valve following the instructions below.
Otherwise move directly to
the
next
operation.
ATTENTION!!
Test Function will automatically deactivate
after 30 minutes. Test Function can be
RESET
button.
1
3
2
4
Adjusting the Gas Valve at Max
Power
Adjust the gas valve by turning
setting
screw
4
clockwise to increase the
CO
2
level; counterclockwise to reduce
the
CO
2
level (1 turn adjusts the
CO
2
level
by approximately 0.3%). Wait 1 minute
after each change in setting for the
CO
2
value to stabilize.
If the measured
value corresponds
Figure
7 – Max Power
CO
2
Adjustment
Wait 1 minute for the boiler to stabilize
before carrying out the combustion analyses.
2.
Checking/
Adjusting the
CO
2
at Max
Power
Set the thermostat at the highest possible
setting to create a demand for heat.
Select Max Power from the Test Mode
– Burner Test screen, then wait for the
Burner Power gauge to reach 100%.
3. Checking/Adjusting the
CO2
at Min
Power
Select Min Power from the Test Mode –
Burner Test screen, then wai
t
for the Burner
Power gauge to reach 10%.
4
to the value given
in Table 3, Max
Power adjustment
is complete.
Otherwise, continue
with the procedure.
Pa
rt
3.
Checking/Adjusting the
CO
2
at Max
and Min Power
Max Power
(100%)
Min Power
(10%)
8.
5
–
9.8
9.
5
–
1
0.8
Содержание TFTN
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