Technical data

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 37
5.20 Control units
5.20.1 Vaillant control units and accessories
Controller Item no. Connection
VRC 400 (1-circuit controller, weather-controlled) 00 2001 0843 Installation in electronics box (plug-and-play)
VRT 360 (room temperature controller) 00 2001 0842 Wall-mounted, 2-wire bus
VRT 360f (room temperature controller) 00 2001 8258 Wireless controller, receiver wall-mounted
VRT 230 (room temperature controller) 00 2001 0841 Wall-mounted, 3-wire connection to terminals 3-4-5
timeSWITCH 140 (timer) 306 760 Installation in electronics box (plug-and-play)
timeSWITCH 130 (timer) 306 759 Installation in electronics box (plug-and-play)
VRT 30 (room thermostat) 300 637 Wall-mounted, 3-wire connection to terminals 3-4-5
VRT 30 (room thermostat) 0020018265 Wall-mounted, 2-wire bus
Telecommunication Item no. Connection
vrnetDIALOG 830 (Int) 00 2000 3988 GSM/GPRS, installation in electronics box (plug-and-play)
vrnetDIALOG 860/2 (Int) 00 2000 3984 Wall-mounted, GSM/GPRS, up to 16 appliances
Accessories Item no. Connection
VR 65 control centre for UK cylinder installation (eBUS) 307 215 System solution for UK cylinder connection
vrDIALOG 810/2 00 2002 3370 Diagnostic software
Table 5.1 Vaillant control units and accessories
5.20.2 External electrical controllers
The boiler terminals 3, 4 and 5 on the combi boiler are
for the connection of external controllers, for example a
timer and/or a room thermostat. Terminals 3 and 4 are
linked together from the factory. If external controllers
are used, this link must be removed and the controllers
must be connected to terminals 3 and 4.
Terminal 5 is an additional neutral line for example for
the anticipator of a room thermostat.
5.20.3 Details for the connection of an external
timer to the terminal strip
3
987
POWER SUPPLY
230 V
50 Hz
L
L
LN
N
N
N
20 VDC (DO NOT USE 7, 8, 9 IN UK!)
FUSE 3 A
SWITCH
CONTACTS
ROOM
THERMOSTAT
TIMER
4
5
Fig. 5.22 Details for the connection of timers
If it is intended to connect a room thermostat in addi-
tion to a timer, the connection between the ON connec-
tion of the timer and terminal 4 on the combi boiler
must be broken by the contacts of the room thermostat
(see circuit diagram Fig. 5.22).
Sequence of operations during installation 5