Glow-worm Ultimate 3 regular (25r)
Heat only (regular), natural gas
Combustion figures
| Figure | Natural gas (G20) |
|---|---|
CO₂ at high rate More infoHide infoCheck programme P.01 set to 100 (full load), reading taken after 5 minutes at the flue gas analysis point. The check table (7.8.4 and 10.4) says front casing on / front casing off. If outside the check figure, set it to the setting figure (10.5) with the front casing removed, in 1/8 turns, waiting about 1 minute after each. Setting is for Wobbe index 14.09 kWh/m³. |
|
CO₂ at low rate | Not given in MI |
Maximum CO More infoHide infoAt full load (10.5). The Benchmark flowchart in the appendix (MI p. 38) uses less than 350 ppm at maximum and minimum rate (one box prints 335 ppm). | ≤ 250 ppm |
CO/CO₂ ratio More infoHide infoFrom the 10.5 setting table. The Benchmark flowchart in the appendix (MI p. 38) uses less than 0.004 at maximum and minimum rate. | ≤ 0.0027 |
O₂ at high rate More infoHide infoAt full load (10.5 setting table). | 4.5 ±1.8 vol. % |
O₂ at low rate | Not given in MI |
Working inlet pressure More infoHide infoMeasured at the test nipple on the gas stopcock with the boiler at full load (check programme P.01, or P.03 without eBUS control). Technical data gives the G20 gas supply pressure as 20.0 mbar. |
|
Gas rate at maximum More infoHide infoFrom the technical data (G20). Gas flow at P min: 0.648 m³/h. Section 7.8.1 also has a table of gas rates at the meter against the Qnw on the data plate (nominal, +5%, −10%), checked with P.01 after 5 minutes, case on. |
|
Flue integrity More infoHide infoAt the air inlet test point, boiler at maximum rate (Benchmark flowchart, MI p. 38). | O₂ ≥ 20.6% CO₂ < 0.2% |
From 0020239568_01 (15.11.2017)
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 |
|---|---|---|
| Ultimate 3 25r -A (H-GB) | 41-019-52 | NG |
Source: Glow-worm Ultimate 3 25r installation and maintenance instructions, 0020239568_01 (15.11.2017).
Sections: 2.3 Validity of the instructions; 6.3 Using check programmes; 7.8.1 Checking the gas flow rate; 7.8.2 Checking the gas connection pressure; 7.8.4 Checking the CO₂ content; 10.4 Checking the CO₂ content; 10.5 Setting the CO₂ content; B Check programmes; H Commissioning Checklist; J Technical data.
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.