Controls; External Electrical Controls; Connection Details For External Switches And . Boiler Terminal Strip; Vaillant Optional Plug In Timer Accessories - Vaillant ecoTEC plus Instructions For Installation And Servicing

4.4.4 Controls

Controls
VRC 400 (1-circuit controller, weather-controlled)
VRT 360 (room temperature controlled)
timeSWITCH 140 (timer)
Accessory
VR 65 control centre for UK cylinder installation (eBUS)
Table 4.2 Vaillant controls (used in conjunction with the VR 65 accessory)

4.4.5 External electrical controls

The boiler terminals 3, 4 and 5 are for connecting
external electrical controls. Terminals 3 and 4 are linked
together when the boiler is supplied. If external controls
are used, this link must be removed, and the controls
connected to terminal 4. Terminal 5 is an additional
neutral connection for external neutrals such as from
the anticipator of a room thermostat.
4.4.6 Connection details for external switches and
boiler terminal strip.
20 VDC
7 8 9 L N
Do not use
7, 8, 9 in UK!
Note: All cables
connected to the
appliance should
be permanently
fixed to the wall!
* Remove link if
external 230v
controls are to
be fitted
E
230 Vac 50 Hz permanent supply
Fig.4.11 Mains Supply and External Controls

4.4.7 Vaillant optional plug in timer accessories

Refer to the instructions supplied with the optional acces-
sories for connection details. Upon completion of all elec-
trical connections refit the terminal box cover by pushing
into place. The cover is secured by two locking clips.
Instructions for installation and servicing ecoTEC plus / 0020020828_05
Item no.
00 2001 0843
00 2001 0842
306 760
Item no.
307 215
heating pump connection
3 4 5
L N
N
230 Vac system
controls
• Zone valve
• programmer
• room thermostat
• cylinder thermostat
junction box
3 amp fuse
double pole
isolator
N L
Boiler installation sequence 4
Connection
Installation in electronics box or wall-mounted (plug-and play)
Wall-mounted, 2-wire bus (plug-and-play)
Installation in electronics box (plug-and-play)
Connection
System solution for UK cylinder connection

4.4.8 Connection details using the VR 65 control

centre

The Control Centre VR 65 is an eBUS system component.
In a storage unit cylinder installation, it is responsible
for the communication between the ecoTEC plus boiler
and external 2- or 3-way-valves. Connect the VR 65
Control Centre as described in the enclosed manual.
21