1 Safety experience and knowledge if they have been given supervi- 1.1 Intended use sion or instruction concerning The product is intended as a use of the product in a safe way heat generator for sealed heat- and understand the hazards in- ing installations and for do- volved.
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▶ If it is safe to do so, close the bells, telephones or other communication systems in emergency control valve or the building. the main isolator. ▶ Close the emergency control ▶ If possible, close the gas valve or the main isolator. stopcock on the product.
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– to the gas, supply air, water ter and, in cases of doubt, ask and electricity supply lines a competent person about – to the entire flue system this. – to the entire condensate dis- 1.3.6 Legionella charge system ▶ Have a competent person in- –...
2 Notes on the VUW 20/26CS/1-5 (N-GB) 47-044-92 ecoTEC plus 826 documentation VUW 25/32CS/1-5 (N-GB) 47-044-93 ▶ ecoTEC plus 832 Always observe all operating instruc- VUW 30/36CS/1-5 (N-GB) 47-044-94 tions enclosed with the installation com- ecoTEC plus 836 ponents. ▶ VUW 30/40CS/1-5 (N-GB) 47-044-95 Store these instructions and all other...
Installer level active The declaration of conformity can be viewed at the manufacturer's site. Display locked Connected to the system con- trol Connection to the Vaillant server established 0020308119_02 Operating instructions...
3.6 Hot Water Association who should, on receipt, write the Notifica- Vaillant is a full member of the Hot Water tion Number on the Benchmark Checklist. Association and promotes the scheme This product should be serviced regularly in association with its cylinder range.
Vaillant sensoROOM Further settings for heating mode and do- pure (VRT 50/2) control. mestic hot water mode are described in The installer level must only be operated the relevant sections.
4.3 Activating/deactivating the tions for the room temperature con- trol. button lock ◁ Heating mode is switched off. Call up MAIN MENU → SETTINGS → Button lock. Note If the sensoROOM pure Confirm by pressing (VRT 50/2) room temperature – The button lock is activated. control is connected, you To deactivate the button lock, press cannot set the desired temper-...
▶ If you want to switch off cylinder Validity: Product without connected sensoROOM pure (VRT 50/2) charging, deactivate comfort mode. ▶ (→ Section 4.5.3) Call up MAIN MENU → CONTROL → Comfort mode. Condition: Cylinder charging switched off ▶ – Hot water temperature: 35 to 65 ℃ Activate On or Off.
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Set the time periods on the heat generat- or's control panel. (→ Section 4.6.2) 24 °C Switching off heating mode The heating mode can only be switched 21 °C off by decreasing the target room tem- perature to the minimum value of 15 °C. 16 °C (→...
5 Care and maintenance 5.1 Caring for the product ▶ Clean the casing with a damp cloth and a little solvent-free soap. ▶ Do not use sprays, scouring agents, detergents, solvents or cleaning agents that contain chlorine. The active list entry is displayed lit up in 5.2 Maintenance white.
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▶ We recommend a filling pressure of at Recommendation for the excess pres- least 1 bar (0.1 MPa). If the filling pres- sure: At least 1.0 bar (0.1 MPa), max- sure is lower than 0.8 bar (0.08 MPa), imum 2.5 bar (0.25 MPa) with correct act- top up the heating water and, in doing ive pressure compensation, good standard so, increase the excess pressure in the...
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▶ Open all radiator valves (thermostatic Validity: Product with integrated hot water generation OR Product with integrated hot water generation and valves) of the heating installation. ▶ shift-load cylinder If necessary, check that both service valves on the product are open. ▶...
7 Decommissioning 5.5 Checking the condensate discharge pipe and tundish 7.1 Temporarily decommissioning The condensate discharge pipe and tun- the product dish must never be blocked and condens- ate should be able to flow freely. Condition: Risk of frost ▶ Regularly check the condensate dis- ▶...
Vaillant scheme. Disposing of batteries – Immediate help If your Vaillant boiler develops a fault your first action should be to contact your in- If the product contains batteries that staller, as his professional assessment is are labelled with this mark: needed under the terms of our Guarantee.
Appendix A End user level When the status display is displayed, press twice to call up the menu. CONTROL menu item Comfort mode: Product with integrated domestic hot water generation or product with connected domestic hot water cylinder On: Keeps the domestic hot water generation ready. INFORMATION menu item Water pressure: Displays the current water pressure.
Code Meaning S.020 There is no demand for the domestic hot water cylinder charging. S.022 The domestic hot water cylinder charging is active and the pump is in prerun mode. S.023 The domestic hot water cylinder charging is active and the unit ignites. S.024 The domestic hot water cylinder charging is active and the burner is operating.
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Symptom Possible cause Measure ▶ Product does not start The cold water stop Open the cold water stop valve. up (no hot water, valve is closed. ▶ heating remains cold) The product is Restart the product. (→ Section 8) switched off. The room temper- Set the flow temperature.