Vaillant ecoTEC plus 937 Operating Manual

Also see for ecoTEC plus 937: Instructions for installation and servicing Operating manual Instructions and maintenance instructions

Contents

Vaillant ecoTEC plus 937 Operating Manual Manual pdf 9 page image

9Operating instructions ecoTEC plus 9374.3 Start-upbari F P12Fig. 4.5 Switching the appliance on• Use the main switch (1) to switch the appliance on andoff:I: "ON“0: “OFF”When you switch the unit on the display (2) shows thecurrent heating feed temperature.To adjust the appliance according to your requirements,read sections 4.4, and 4.6, which describe the settingoptions for hot water supply and heating.a Caution!Risk of damage!The frost protection and monitoring systemsare only active when the main switch of theappliance is in the "I” position and it is notdisconnected from the mains power supply.To ensure that these protection devices remain active,switch your gas wall boiler on and off using thecontroller (see the corresponding operating manual).Section 4.9 describes how to put your gas wall boiler outof operation.4.4 Domestic hot water operationThe boiler can only be used if the heating system haswater in it (see Section 4.2.2).4.4.1 Setting the hot water temperaturebari F P21Fig. 4.6 Setting the water temperature• Switch on the appliance as described in section 4.3.• Turn the knob (1) for setting the hot watertemperature to the temperature you require.• In order to increase the temperature turn the knob ina clockwise direction, and to reduce the temperatureturn the knob in an anticlockwise direction. In doingthis:- left-hand stop approx. 35 °C- right-hand stop max. 65 °Ch NoteThis knob is used to set the maximum hotwater temperature. If turning the knob all theway to the right has no effect on thetemperature then the hot water preparationsystem is running at full output for the selectedthroughput.The set value is shown in the display during the settingprocess (2).After approx. 3 seconds the display returns to standardmode (the current heating flow temperature).a Caution!If you live in an area with hard water, please donot turn the knob (1) further than the mid-position (12 o'clock position) to preventexcessive scale build up.Operation 4