Drawing Hot Water (Ecotec Combination Boilers Only); Heating Operation - Vaillant ecoTEC Instructions For Use Manual

ecoTEC pro
1
b
a
b
c
1
Fig. 4.11 Switching the warmstart system on and off with eco-
TEC pro
• Activate the warmstart system by briefly turning the
knob (1) all the way clockwise (position a). The green
LED (2) lights up.
Then select the required temperature, e.g. setting b,
see 4.5.1.
The water is kept at a constant temperature of 55 °C
and is available immediately as you turn on a tap.
• Switch off the warmstart system by briefly turning the
knob (1) all the way anti-clockwise (position c). The
green LED (2) goes out. Then select the required hot
water outlet temperature again, e.g. setting b.
4.5.3 Drawing hot water (ecoTEC combination
boilers only)
1
Fig. 4.12 Drawing off hot water (example: ecoTEC plus)
On opening a hot water tap (1) at a supply point (basin,
shower, bath, etc) the ecoTEC combination boiler will
automatically operate to deliver hot water.
On closing the tap the boiler switches OFF (or continues
to operate for central heating if required).
Instructions for use ecoTEC / 838402-05
4.6

Heating operation

The boiler must only be used when the heating system
contains water (see 4.3.2).
4.6.1 Setting the maximum radiator temperature
control
2
2
2
1
Fig. 4.13 Setting the maximum radiator temperature control
Set the maximum radiator temperature control to the
desired setting using the control knob (1).
We recommend the following settings:
– Left setting during spring and autumn,
– Middle setting during mild winter,
– Right setting during cold winter.
When you adjust the temperature, the set value is
shown in the display (2). After five seconds the display
returns to standard mode (the current heating flow tem-
perature).
Normally you can adjust the knob (1) continuously up to
a flow temperature of 75 °C. However, higher tempera-
tures can be set on your appliance, have your engineer
make adjustments so that you can operate the heating
system at higher flow temperatures.
Operation 4
plus/exclusive
11