CALIBRATION MODE:
Proceed as follows to enter “calibration mode” on the boiler control panel and calibrate
the gas value:
1. Turn the control knobs 6 and (fig. 1) 7 fully counter-clockwise to their
minimum positions as shown below.
2. Starting in this position, quickly turn control knob 7 twice, consecutively,
clockwise approximately a ﾼ turn as shown below in fig. 2.
Note: LED’s 2 and 3 (fig. 4) flash alternately and the display alternates the message
“SF” and the boiler output temperature every five seconds (fig. 3).
3. Now turn knob 6 to adjust the fan speed to a setting between minimum
thermal power (0%) and maximum thermal power (100%).
Note: In “calibration mode”, the display alternates between the message “P” and
the boiler output temperature about every 5 seconds. (fig. 4)
4. Calibration mode remains active for 20 minutes. To exit “calibration mode”
before this time simply turn control knob 7 twice, consecutively, clockwise
approximately a ﾼ turn as shown in fig. 2.
Note: This function is interrupted if the central heating delivery temperature
reaches its MAX. SETPOINT.
PROCEED AS FOLLOWS TO CALIBRATE THE GAS VALVE:
1
. Ensure your combustion analyzer is set to NG, insert the flue probe into the flue
opening on the top of the boiler, after removing the two flue test port plugs.
2. Calibrate maximum thermal power by turning knob 6 clockwise to max. With the
boiler operating at max. output, check the value for CO2 measured in the flue is
8.7%. If necessary, turn the adjustment screw, or “V” screw, on the gas valve.
Turn clockwise to reduce the CO2 level or counter-clockwise to increase it.
3. Calibrate minimum thermal power. With boiler operating at minimum output by
turning knob 6 counter-clockwise to minimum setting. Check the CO2 value
measured in the flue to 8.4% CO2. If necessary adjust the “K” screw (4mm hex) on
the gas valve. Turn clockwise to increase the CO2 level or counter-clockwise
to reduce it.
Note: Allow time between adjustments for your combustion analyzer to sense the adjusted for your
combustion analyzer to sense the adjusted CO2 level. The boiler is now ready for normal operation using NG
g
as and can be returned to the service mode by turning control knob 7.
BAXI LUNA HT 1.650 SETUP NATURAL GAS
Luna HT 1.650 Setup Natural Gas
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