Glow-worm Flexicom sx system (18sx, 30sx)
System boiler, natural gas
Combustion figures
| Figure | Natural gas (G20) |
|---|---|
CO₂ at high rate More infoHide infoFrom the G20 burner % CO₂ table in section 13: the check and setting columns are both 9.3 ± 0.5 for both sizes. The table doesn’t split by rate; the MI checks the CO₂ at maximum and minimum rate against it. The specification table gives 9.3 nominal, case on and case off. | 9.3% ± 0.5 |
CO₂ at low rate More infoHide infoSame table as high rate: one figure used for both maximum and minimum rate. | 9.3% ± 0.5 |
Maximum CO | Not given in MI |
CO/CO₂ ratio More infoHide infoMust not exceed this value (both sizes). | 0.004 |
O₂ | Not given in MI |
Working inlet pressure More infoHide infoNominal supply pressure for G20, checked at the gas service isolation valve test point with all other gas appliances operating. The MI says the safe nominal maximum heat input can be achieved at an inlet pressure down to 15 mbar. |
|
Gas rate at maximum More infoHide infoThe MI gives different approximate figures in different places. Specification table: approximate max gas rate after 10 mins from cold. Section 12.5: approximate rates, checked at the meter at least 10 minutes after the burner has lit. The section 12.6 range rating table also gives 1.9 m³/h at 18 kW and 3.2 m³/h at 30 kW. |
|
From 0020051443-07 01.10
Enter service mode for high and low rate
High rate
Steps not added yet. Follow the MI.
Low rate
Steps not added yet. Follow the MI.
Ending the test: follow the MI.
Models and GC numbers
| Model | GC number | Gas |
|---|---|---|
| Flexicom 18sx | 41-315-72 | NG |
| Flexicom 30sx | 41-047-76 | NG |
Source: Glow-worm Flexicom 18sx, 30sx Installation and Servicing, 0020051443-07 01.10.
Sections: 1 Boiler Specification; 12.3 Gas Supply; 12.5 Check the Gas Inlet Pressure and Gas Rate; 12.6 Range Rating; 13 Servicing (Combustion check and setting the air/gas ratio valve; Maximum rate check and adjustment; Minimum rate check and adjustment).
Spotted something wrong? Tell us.
Check these figures against the MI for the appliance in front of you, matched by GC number and manual date. Combustion work needs a calibrated analyser and a Gas Safe registered engineer.