System Gas Extraction Function; Gas Valve; Gas Conversion Methods - Baxi LUNA PLATINUM Instruction Manual For Users And Fitters

15.1 SYSTEM GAS EXTRACTION FUNCTION

This function is used to facilitate the elimination of the air inside the heating circuit when the boiler is first installed or after
maintenance when the water is drained from the primary circuit. The electronic board will activate a pump on/off cycle lasting 10
minutes. The function will automatically stop at the end of the cycle.
To manually interrupt the function, repeat the procedure described above. When the function is disabled, " off" is shown on
the display.

16. GAS VALVE

This appliance does not require any mechanical adjustment on the valve. The system ensures electronic
auto-adaptation.
Pi Gas supply pressure tap
Pout Gas at burner pressure tap

16.1 GAS CONVERSION METHODS

Only an Authorised Technical Assistance Service can convert boiler operation from G20 to G31 gas or vice-versa. To calibrate, set
the board parameters (fan rpm - see TABLE 1) as indicated below:
• Access MENU 2 as described in section 14.2.1.
• B Sitherm
• B On B to confirm.
• B programme row 2721 then
• B Natual gas or LPG
• B programme row 2720 then
B Off B to confirm.
•
• C to return to the previous menu then
confirm.
• to the value indicated in the following table then
• C to return to the previous menu then
confirm.
• to the value indicated in the following table then
When the gas change is complited the boiler data plate must be amended to indicate the new gas data.
TABLE 1: FAN SPEED PARAMETERS
2441
Pmax heating
Boiler
model
G20 - G25 G31
33 6000 6000
24 5600 5600
7110317.02 (3-10/14)
B B programme row 2720 then
B to confirm.
B to confirm.
B to confirm.
"Boiler Settings"
Burner Control
PARAMETERS - rpm
9529 9524
Pmax DHW Pmin
G20 - G25 G31 G20 - G25
7000 7000 1000
6600 6600 1000
B to confirm.
B B
B to confirm.
B B
B to confirm.
2441
Pmax heating
Boiler
model
G31 G20 - G25
1250 1.32 6900
1500 1.24 6600
1.18 6400
1.12 4600
44
programme row 2441 then
programme row 9529 then
PARAMETERS - rpm
9524
Pmin
G31 G20 - G25 G31
6800 1000 1250
6600 1000 1500
6200 1100 1650
4500 1100 1650
B to
B to