For the owner Operating manual ecoTEC plus 937 Gas condensing storage combination boiler GB VUI
Contents Appliance characteristics Recommended accessories Appliance characteristics ........................................... 2 Appliance characteristics Recommended accessories......................................... 2 The Vaillant ecoTEC plus 937 is a compact gas wallmounted boiler with condensing technology and 15 litre laminar stainless steel storage tank. The Vaillant ecoTEC plus 937 provides central heating and hot water, whereby the hot water is supplied direct from the boiler.
Notes on the documentation 1 Safety 2 1 Notes on the documentation The following information is intended to help you throughout the entire documentation. Further documents apply in combination with this operating manual. We accept no liability for any damage caused by thefailure to observe these instructions. Other instruction manuals which form part of the scope of supply of the equipment For the owner of the system: Short operating instruction manual No. 838404 Guarantee card with envelope No.
2 Safety • • • • • • Do not smoke. Shut off the gas supply at the meter. Open the windows and doors. Warn other residents. Get out of the house. Consult your gas supplier, service agent or other competent person. 2.3 Safety instructions Always observe the following safety instructions and regulations. d Danger! Inflammable mixtures of gas and air may explode Do not use or store explosive or easily flammable substances such as petrol or paint in the same room as the appliance.
Instructions on operation 3 3 3.1 Instructions on operation Factory guarantee 3.1.1 Two years guarantee for ecoTEC plus units Vaillant is committed to rectify any manufacturing faults which arise during the first 24 months after installation. A prerequisite for the effectiveness of the guarantee in the second year is that, one year after installation, an annual inspection is carried out by a CORGI registered maintenance engineer. The costs for this annual service are not included in the guarantee. 3.1.
4 Operation 4 Operation 4.1 (in this example 45 °C). In the event of a fault, an error code appears instead of the temperature. You can also see the following information from the symbols displayed: Overview of the operating elements 1 2 10 1 The current heating flow temperature, the heating system filling pressure or a status or error code Flue problem Flue problem 3 9 8 7 4 6 5 Fig. 4.
Operation 4 4.2 Measures prior to commissioning 4.2.1 Opening the isolating valves h • Check the filling pressure of the system using the pressure gauge (1) before putting it into operation. Note If the boiler is fitted with a bottom cover the isolating valves are under this cover. For the heating system to operate properly, the indicator on the pressure gauge must be in the dark grey zone when the system is cold. This corresponds to a filling pressure between 1.0 and 2.0 bar.
4 Operation When you switch the unit on the display (2) shows the current heating feed temperature. To adjust the appliance according to your requirements, read sections 4.4, and 4.6, which describe the setting options for hot water supply and heating. a Caution! Risk of damage! The frost protection and monitoring systems are only active when the main switch of the appliance is in the "I” position and it is not disconnected from the mains power supply.
Operation 4 4.4.3 Storage tank charging mode The storage tank charging of the layer charging storage tank can be activated and de-activated using the operating elements on your boiler. The Legionella protection system can be de-activated in the diagnosis level. For further information see installation and maintenance manual, Section 6.1.4, Storage tank charging and Section 8.1.2, Diagnostic codes.
4 Operation 4.5 Heating operation The boiler can only be used if the heating system has water in it (see Section 4.2.2). 4.5.3 Setting a room thermostat or weather compensator 1 4.5.1 Setting the flow temperature 2 2 1 Fig.4.13 Setting a room thermostat or weather compensator Fig. 4.11 Setting the flow temperature • Adjust the room thermostat (1) and/or the radiator thermostatic valves (2) in accordance with the operating instructions for these accessories.
Operation 4 The status display provides information on the operating status of the appliance. • Press the "i" button (1) to activate the status displays. The display (2) then shows the individual status codes, e.g. "S. 4“ for burner operation. The table below explains the most important status codes. In switching phases, for example on starting up again after the flame was extinguished, the status message "S." briefly appears. • Press the "i" button (1) again to switch the display back to normal mode.
4 Operation 4.8 De-commissioning a Caution! Danger of freezing up of parts of the entire installation The frost protection system cannot guarantee flow through the entire heating system. 4.10 1 Fig. 4.16 Switching off the appliance • Turn the main switch (1) to the position "0“. a Caution! The frost protection and monitoring systems are only active when the main switch of the appliance is in the "I" position and it is not disconnected from the mains power supply.
0020031573_02_GB 09 2007
