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11 - OPERATING
C -
Service pressure port
D - Inlet gas pressure port
E - High fi re, CO2 adjusting screw
F - Low fi re, CO2 adjusting
Figure 32 - Gas valve
11.6 - Ignition
control testing
After placing the boiler in operation,
the ignition control's safety shutoff
function must be tested as follow:
1. turn the power switch (item "34" in
fi gure 1) to on;
2. close the room thermostat to create
a call for heat;
3. turn knobs "32" and "33" in fi gure 1
to their maximum position;
4. wait a few minutes for the burner
to light-up as indicated when
light "3" shown in fi gure 39 stays
illuminated.
5. close the manual gas shutoff valve,
see fi gure 13, item "3";
6. after 40 seconds, the display must
show L01;
7. open the manual gas shutoff valve,
see fi gure 13, item "3";
8. verify your gas meter, gas fl ow
must be zero.
WARNING!!! If gas fl ow occurs,
close the manual gas shutoff valve
and troubleshoot the system to
determine why there is gas fl ow
when the gas valve should be
deenergized. Do not operate the
boiler until the problem is resolved
or a fi re or explosion causing
property damage, personal injury
or loss of life may occur!
11.7 - Gas supply
pressure checking
and adjustment
The gas supply pressure must match
that listed on the boiler rating label.
Check the gas supply pressure by
following the steps below:
1. close the manual gas shut off valve,
fi gure 13, item "3";
2. follow the steps in section 13.2 to
remove the front cover;
3. turn the screw in pressure port
"D" shown in fi gure 32 three turns
counterclockwise;
4. connect a manometer with
graduations of at least 0.1 in.W.C.
(0.25 mbar) to the inlet gas port "D"
shown in fi gure 32;
screw
5. open the manual gas shut off valve,
6. check that the gas supply pressure
7. turn the power switch to on and
8. press the
9. press the
10. check the manometer to make
After verifying the correct gas
pressures disconnect the manometer,
turn the screw in pressure connection
"D" in fi gure 32, clockwise until snug
and check for any gas leaks.
the pressure connection screw or
the gas valve will be damaged!
WARNING!!! Never use an open
fl ame to check for gas leaks, a
fi re or an explosion could result
causing severe personal injury or
death!
40
fi gure 13, item "3";
does not exceed the "maximum
gas supply pressure" as stated in
section 14;
generate a heat demand by turning
knob "33" shown in fi gure 1 to its
maximum setting. Also ensure that
the room thermostat is calling for
heat;
and
at the same time for more than
10 seconds, the display will show
;
key until the
display shows
. Now the
boiler will run for 10 minutes at
maximum input;
sure the gas supply pressure does
not drop below the "minimum
gas supply pressure" as stated
on section 14. If the gas supply
pressure does not fall within the
above values, adjust the upstream
gas pressure regulator to bring
the gas supply pressure within
the maximum and minimum range
listed on section 14.
CAUTION!!! Never force
keys
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