9
Installation Instructions
for Control Center VR 65
5.3
Installing the VR 65 with a NTC
Note!
To comply with the approvals, the boiler must
be Vaillant ecoTEC if the cylinder NTC solution
is used.
Before installing the NTC, first remove the cylinder con-
trol with two capillary tubes for the cylinder thermostat
and thermal cut out.
The cylinder control is be fitted in one of two ways
(A or B).
• Disconnect the wires (
1
) from the terminal block of the
cylinder control (
a
).
•
Version A, fig. 5.4:
Unclip the cylinder control (
a
) and remove it from the
terminal box (see
2
, fig. 5.4).
(
Version B, fig. 5.5:
To remove the cylinder control (
a
) release the clips
with two screw drivers as shown in fig. 5.5)
• Remove the capillary tubes (
3
) of the thermostat and
the thermal cutout from the dry pocket of the
uniSTOR.
Ensure that the capillary tube of the immersion sensor
is not removed.
• Now the NTC can be pushed into the free dry pocket
of the cylinder as shown in fig. 5.6.
• The NTC is wired into the VR 65 as shown in fig. 5.2 or
fig. 5.3.
2
3
a
b
1
Fig. 5.4 Removing the cylinder control (Version A)
Legende:
a Cylinder
control
b Immersion
Heater
Control
3
a
b
1
Fig. 5.5 Removing the cylinder control (Version B)
Legende:
a Cylinder
control
b Immersion Heater Control
Fig. 5.6 Installing the NTC
Electrical installation 5
Summary of Contents for Control Center VR 65
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