Vaillant ecoTEC sustain 24 Installation And Maintenance Instructions Manual

Also see for ecoTEC sustain 24: Operating instructions Installation and maintenance instructions

36 Installation and maintenance instructions ecoTEC sustain 0020253094_0512.6 Setting the CO₂ contentCondition: The CO₂ content must be adjusted21▶ Remove the sticker.▶ Remove the covering cap (1).▶ Turn the screw (2) to set the CO₂ content (value withfront casing removed).◁ To increase the CO₂ content: Turn anti-clockwise◁ To decrease the CO₂ content: Turn clockwiseNoteFor natural gas only: Only perform the adjust-ment in small increments of a 1/8 turn andwait approx. one minute after each adjust-ment until the value stabilises.For liquefied petroleum gas only: Only per-form the adjustment in extremely small incre-ments (approx. 1/16 turn), and wait approx.one minute after each adjustment until thevalue stabilises.▶ Compare the measured value with the correspondingvalue in the table.Setting the CO₂ con-tentRemovedfront casingFitted frontcasingNatural gas H Natural gas HCO₂ at full load 9.0 ±0.2 vol. % 9.2 ±0.2 vol. %Set for Wobbe indexW₀14.09 kW⋅h/m³ 14.09 kW⋅h/m³O₂ at full load 4.5 ±1.8 vol. %CO at full load ≤ 250 ppm ≤ 250 ppmCO/CO₂ ≤ 0.0028 ≤ 0.0028Setting the CO₂ con-tentRemovedfront casingFitted frontcasingLiquefied pet-roleum gas PLiquefied pet-roleum gas PCO₂ at full load 10.1 ±0.2 vol.%10.3 ±0.2 vol.%Set for Wobbe indexW₀21.34 kW⋅h/m³ 21.34 kW⋅h/m³O₂ at full load 5.1 ±0.8 vol. %CO at full load ≤ 250 ppm ≤ 250 ppmCO/CO₂ ≤ 0.0025 ≤ 0.0025▽ If the setting is not in the specified adjustment range,you must not start up the product.▶ Contact customer service.▶ Check whether the air-quality requirements with regardto carbon monoxide are fulfilled.▶ Refit the covering cap.▶ Install the front panel.12.7 Removing the compact thermal moduleNoteThe compact thermal module consists of fourmain components:– Speed-regulated fan,– Gas-air mixture unit,– Gas supply (mixture pipe) with burner flange,– Premix burner.Danger!Risk of death and risk of material damagecaused by hot flue gas.The seal, insulating mat and self-locking nutson the burner flange must not be damaged.Otherwise, hot flue gases may escape andcause personal injury and material damage.▶ Replace the seal each time you open theburner flange.▶ Replace the self-locking nuts on theburner flange each time you open theburner flange.▶ If the insulating mat on the burner flangeor on the back wall of the heat exchangershows signs of damage, replace the insu-lating mat.1. Switch off the product using the on/off button.2. Close the gas stopcock.3. Remove the front casing.4. Tilt the electronics box forwards.