7 Commissioning
7.1
Commissioning procedure
Warning
Commissioning must be done by a qualified installer.
If adapting to another gas type, the gas valve unit must be
adjusted before switching on the boiler.
1. Open the main gas valve.
2. Open the appliance gas valve.
3. Switch on the power with the boiler's on/off switch.
4. Configure the settings shown on the display.
The start-up program will start and cannot be interrupted.
5. Set the components (thermostats, control) so that heat is demanded.
Important
In the event of an error during the start-up, a message with the
corresponding code is displayed. The meaning of the error codes
can be found in the error table.
7.2
Gas settings
7.2.1
Factory setting
The factory setting of the boiler is for operation with the natural gas group
G20 (H gas).
Tab.46 Gas 320 Ace - Factory settings G20 (H-gas)
Code
Display text
Description
285
355
430
500
575
650
DP003
Abs. max fan
DHW
Maximum fan speed on Domestic
Hot Water
5200
5500
3500
3800
4300
4100
GP007
Fan RPM Max
CH
Maximum fan speed during Central
Heating mode
5200
5500
3500
3800
4300
4100
GP008
Fan RPM Min
Minimum fan speed during Central
H Domestic Hot Water
mode
1400
1550
950
1050
1100
1050
GP009
Fan RPM Start
Fan speed at appliance start
2500
2500
1300
1400
1400
1400
Tab.47 Gas 620 Ace - Factory settings G20 (H-gas)
Code
Display text
Description
570
710
860
1000
1150
1300
DP003
Abs. max fan
DHW
Maximum fan speed on Domestic
Hot Water
5200
5500
3500
3800
4300
4100
GP007
Fan RPM Max
CH
Maximum fan speed during Central
Heating mode
5200
5500
3500
3800
4300
4100
GP008
Fan RPM Min
Minimum fan speed during Central
H Domestic Hot Water
mode
1900
1850
1300
1250
1400
1350
GP009
Fan RPM Start
Fan speed at appliance start
2500
2500
1300
1400
1500
1600
7.2.2
Checking and setting the gas/air ratio
For boiler Gas 620 Ace, apply the instructions to each boiler module.
Make sure that the other boiler module is out of operation during this
check and/or setting.
The flue gas analyser must meet the requirements of BS 7927 or BS-EN
503793 and be calibrated according to the manufacturer's requirements.
7 Commissioning
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