Vaillant ecoTEC plus 418 - Installation

4.4.4 Controls
Table 4.2 Vaillant controls (used in conjunction with the VR 65 accessory)
Controls
Article no.
Installation
VRT 392 Programmable Room
Control
0020028509
Wall mounted
VRT 392f RF Programmable Room
Control
0020028514
Wall mounted
VRC 470 Weather Compensator
0020108130
Wall mounted or plug in
VRC 470f Weather Compensator
(From Q3 2011)
0020108137
Wall mounted
Accessories
Article no.
Installation
VR 65 control centre
307215
Allows ebus connection of 1 x hot
water and 1 x heating zone
VR 61/2 Mixer Module
002019330
Allows two zone heating systems to
wire to ebus system Note: Wiring
harness plug x2 may be required.
Contact our technical dept for
details.
VR 81/2 Remote Control Unit
0020129323
Allows remote control of 1 zone or
Temperature control of a second
zone
VR 68/2 Solar Module
0020129873
Allows Weather compensator to
add solar control functionality
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.
Fig. 4.11 Mains Supply and External Controls