Installation Manual

25Instructions for installation and servicing ecoTEC plus 0020020828_07
4.4.4 Controls
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
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.
Boiler installation sequence 4