Vaillant ecoTEC plus 612, Instructions For Installation And Servicing

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Supplied By www.heating spares.co Tel. 0161 620 6677
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Instructions for installation and servicing ecoTEC
4.15 Controls
4.15.1 Vaillant controls 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
Available from 10-01-2006
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 50 (room thermostat) 00 2001 8265 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 4.1 Vaillant controls and accessories
4.15.2 External electrical controls
The boiler terminals 3, 4 and 5 are for connecting exter-
nal electrical controls such as a time switch and/or room
thermostat. 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
across terminals 3 and 4. Terminal 5 is an additional
neutral connection for external neutrals such as from
the anticipator of a room thermostat.
4.15.3 Connection details for external time switches
and boiler terminal strip
3
9 8 7
MAINS
SUPPLY
230 V
50 Hz
L
L
L N
N
N
N
20 VDC (DO NOT USE 7, 8, 9 IN UK!)
3 A FUSE
SWITCH
CONTACTS
ROOM
THERMOSTAT
CLOCK
4 5
Fig. 4.18 Connection details for time switches
If a room thermostat is to be connected in addition to a
time switch the wire between the time switch “ON” ter-
minal and boiler terminal 4 should be broken by the con-
tacts of the room thermostat (see schematic layout, fig.
4.18).
4.15.4 Vaillant optional plug in timer accessories
Refer to the instructions supplied with the optional
accessories for connection details. Upon completion of
all electrical connections refit the terminal box cover by
pushing into place. The cover is secured by two locking
clips.
4.15.5 Connection details using the VR 65 Control
Center
The Control Center VR 65 is an eBUS system compo-
nent.
In a storage unit installation, it is responsible for the
communication between the storage unit, the ecoTEC
plus system boilers and external 2- or 3-way-valves.
Connect the VR 65 Controll Center as described in the
enclosed manual.
4.16 Thermostatic radiator valves
The boiler has a built in automatic by-pass valve making
it ideal for use in systems with thermostatic radiator
valves (no separate system by-pass is required). For opti-
mum fuel economy where TRV’s are used they must be
used in conjunction with a boiler control interlock. A pro-
grammable room thermostat or separate timer and
room thermostat will ensure complete boiler shut down
when the heating demand is satisfied. (The radiator in
Boiler installation sequence 4