Bedienungsanleitung Vaillant ecoTEC exclusiv 146 (Seite 9 von 16) (Englisch)

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9Instructions for use ecoTEC / 838402_06

Note

Your appliance has a pressure sensor.

If the pressure falls below 0.6 bar the pressure

flashes in the display.

If it falls below 0.3 bar the appliance switches

off. The error message F.22 appears in the dis-

play. The system must be filled with water be-

fore you start up the appliance again.

4.4 Turning the boiler ON

Fig. 4.8 Switching on the appliance (example: ecoTEC plus)

• Use the main ON/OFF control to switch the appliance on.

I: “ON” – 0: “OFF”

When you switch on the appliance, the current operat-

ing status appears in the display (2).

To adjust the appliance according to your requirements,

read sections 4.5 and 4.6, which describe the setting

options for hot water supply and heating.

Caution

Risk of damage.

The boiler frost protection and monitoring sys-

tems are only active when the main ON/OFF con-

trol of the appliance is in the “I” position and it is

not disconnected from the main power supply.

4.5 Domestic hot water with ecoTEC combination

boilers

The boiler must only be used when the heating system

contains water (see 4.3.2).

4.5.1 Setting the water temperature

• Switch on the appliance as described in section 4.4.

• The domestic hot water temperature can be adjusted

using the hot water temperature control (3).

• Turn the control clockwise to increase the tempera-

ture and anti-clockwise to decrease the temperature.

This corresponds to:

- left limit approx. 35 °C

- right limit max. 65 °C.

plus/exclusive pro

Fig. 4.9 Setting the water temperature

Note

This control adjusts the maximum domestic hot

water temperature. If adjusting the control up-

wards appears to have no effect on the temper-

ature, then the boiler is already operating at

full output for the selected flow rate.

When you adjust the required temperature, the set

value is shown in the display (2). After five seconds the

display returns to standard mode (the current heating

flow temperature).

Caution

If you live in a hard water area please do not set

the control knob (3) above the mid (12 o’clock)

position to prevent excessive scale formation.

4.5.2 Switching the warmstart function on and off

The warmstart system of the ecoTEC combination boil-

ers provides you with hot water at the required temper-

ature immediately. To do this, the hot water heat ex-

changer of the ecoTEC is kept at a pre-selected temper-

ature level and the boiler will therefore periodically op-

erate to maintain this temperature.

ecoTEC plus and ecoTEC exclusive

• Activate the warmstart system by briefly turning the

knob (1) all the way clockwise (position a).

Then select the desired hot water outlet temperature

again, e.g. setting b (refer to Section 4.5.1). The appliance

automatically adapts the hot holding temperature to the

set hot water temperature. The tempered water is directly

available at the taps; the symbol

flashes in the display.

• Switch off the warmstart system by briefly turning the

knob (1) all the way anti-clockwise (position c). The

symbol

disappears. Then select the required hot

water outlet temperature again, e.g. setting b.

Operation 4

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