Heating Operation; Setting The Maximum Radiator Temperature; Control; Switching Off Heating (Summer Operation) - Vaillant ecoTEC plus 612 Instructions For Installation And Servicing

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

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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 tempera-
ture).
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.
Instructions for use ecoTEC
Supplied By www.heating spares.co Tel. 0161 620 6677
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4.6.2 Switching off heating (summer operation)

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Fig. 4.14 Switching off heating (summer operation)
You can switch off the heating in summer without
switching off the hot water supply.
• Turn the knob (1) for setting the maximum radiator
temperature all the way to the left.
4.6.3 Setting a room- or outside temperature con-
troller
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Fig. 4.15 Setting a room- or outside temperature controller
• Set the room thermostat (1) and/or the thermostatic
radiator valves (2) according to the instructions sup-
plied with the control(s).
Note
Vaillant offer room thermostat/time control
accessories which give accurate and economic
room temperature control as well as improved
comfort.
Operation 4
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