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Glow-worm Checked against MI

Glow-worm Energy 2 combi LPG (30c P)

Combi, LPG (G31 propane) only

Combustion figures

FigureNatural gas (G20)LPG (G31)
CO₂ at high rate
More infoHide infoFull load: check programme P.01 set to 100, read once stable (5 minutes), at the flue gas analysis point. Adjust to the front casing off figure (MI 10.5). This manual covers the LPG model only.
Not given in MI
Front casing off
10.3 ±1 %
Front casing on
10.1 ±1 %
CO₂ at low rate
Not given in MINot given in MI
Maximum CO
More infoHide infoAt full load, front casing off or on (MI 10.5). The Benchmark flowchart in the appendix (MI p. 44) uses CO less than 350 ppm as its check at maximum and minimum rate (one box prints 335 ppm).
Not given in MI≤ 250 ppm
CO/CO₂ ratio
More infoHide infoAt full load (MI 10.5). The Benchmark flowchart in the appendix (MI p. 44) uses a ratio less than 0.004 at maximum and minimum rate.
Not given in MI≤ 0.0031
O₂ at high rate
More infoHide infoAt full load, same figure with the front casing off or on (MI 10.5).
Not given in MI5.1 ±0.8 vol. %
O₂ at low rate
Not given in MINot given in MI
Working inlet pressure
More infoHide infoG31, at the test nipple on the gas stopcock, boiler at full load (P.01) with hot taps open (MI 7.10.2). Technical data gives the same G31 supply pressure. Data plate factory setting: G31 – 37 mbar.
Not given in MI
Appliance inlet
25.0–37.0 mbar
Gas rate at maximum
More infoHide infoThe manual contradicts itself on the unit: MI 7.10.1 gives 2.38 kg/h for Qnw 30.6 kW (allowed +5%: 2.50, −10%: 2.14 kg/h), measured at the gas meter with the front casing fitted, P.01, after 5 minutes. The technical data (MI J) gives 2.38 m³/h for hot water at P max. MI 7.10.1 also lists Qnw 24.7 kW: 1.92 kg/h and 25.7 kW: 2.00 kg/h; the technical data gives this boiler’s hot water input as 30.6 kW. Technical data gas flow at P min: 0.598 m³/h.
Not given in MI
Hot water (MI 7.10.1)
2.38 kg/h
Hot water (MI J)
2.38 m³/h
Heating (MI J)
1.98 m³/h
Flue integrity
More infoHide infoAt the air inlet test point, boiler at maximum rate. From the Benchmark flowchart (MI p. 44).
Not given in MIO₂ ≥ 20.6%
CO₂ < 0.2%

From 0020283671_01 (21.09.2018)

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

ModelGC numberGas
Energy 2 30c -A (P-GB)47-019-38LPG

Source: Glow-worm Energy 2 30c P installation and maintenance instructions, 0020283671_01 (21.09.2018).

Sections: 2.3 Validity of the instructions; 7.10.1 Checking the gas flow rate; 7.10.2 Checking the gas connection pressure; 7.10.3 Checking the leak-tightness of the flue gas installation; 7.10.5 Checking the CO₂ content; 10.4 Checking the CO₂ content; 10.5 Setting the CO₂ content; A Check programmes; H Commissioning checklist and Benchmark flowchart; J Technical data.

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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.