Junkers TW2 Bedienungsanleitung Seite 9

The TW 2 remote control has the following con-
trol elements (Fig. ):
1
e Operational mode switch
f Adjustment knob
g Brief operating instructions:
In the compartment on the right side of
the base, a small instruction manual
can be found. It contains all essentials
for operation in brief form.
h Switch (Fig.
5.1 Operating Mode Switch (e)
With this switch, selection can be made be-
tween the following four different operating
modes:
Frost Protection Operation:
• At outside temperatures above + 4 °C,
the central heating appliance is
switched off (burner and pump).
If a mixer valve is fitted, it closes and the
circulation pump for that circuit is
switched off.
• At outside temperatures below +3 °C,
the central heating appliance is adjusted
to the minimum temperature set on the
outside-temperature controlled pro-
grammer. In case a heating mixer is
present, it regulates to a feed tempera-
ture for +10 °C and the circulation pump
for this heating circuit runs.
Central Heating Mode:
Continuous regulation of the temperature
to the value set on the knob (f). See
"Temperature Range" for the temperature
range.
)
3
Economy Mode: Continuous reduction
of the temperature
• Room thermostat function off:
If the control knob (f) is in the centre po-
sition, the central heating flow tempera-
ture is reduced by approx. 25 K com-
pared with the set heating characteristic.
• Room thermostat function on:
If the control knob (f) is in the centre po-
sition, the central heating flow tempera-
ture is reduced by approx. 3 K compared
with the set heating characteristic.
The reduced temperature setting on the out-
side-temperature controlled programmer has no
effect. The circulation pump is switched on.
Alternating mode:
Temperature control alternates automati-
cally between central heating and economy
modes or between central heating and anti-
freeze modes.
Alternation takes place according to the
mode selected (
outside-temperature controlled program-
mer or the timer program setting.
5.2 Knob (f)
The control knob shifts the heating characteris-
tic set on the outside-temperature controlled
programmer up or down.
– Set the central heating flow temperature on
the control knob.
A division corresponds to a change of the
feed temperature of 4 K and therefore a room
temperature change of approx. 0.5 K (see
"Temperature Range").
5.3 Switch (h)
– After removing the top part of the remote
control (a) from the base (b), the switch (h) is
accessible on the back side of the top part.
– With this switch, the room temperature sens-
ing is switched on or off.
• Position = Operation without room
O
temperature sensing (de-
livered condition)
• Position = Operation with room tem-
perature sensing.
TW2
or Automatic) on the
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