Vaillant atmocraft, Installation And Maintenance Instructions Manual

24

Installation and maintenance manual atmoCRAFT

5.4.5  Connection of external accessories and 

control units

When connecting accessories, the existing bridge on the 
relevant plug must be removed.
Take especial care that the bridge is removed when 
incorporating an installation thermostat.

Controller Connection

VRC 410s (1-circuit 
controller)

Insert into the operating aperture

VRC 420s (2-circuit 
controller)

Operating component: Insert into the 
operating aperture mixer module: 
electronic box ProE plug

auroMATIC 620

Terminal X1/7-8-9

calorMATIC 630

Terminal X1/7-8-9

VRT 40

Electronics box ProE plug

VRT 390

Terminal X1/7-8-9

VRT 320

Terminal X1/7-8-9

VRT 330

Terminal X1/7-8-9

VRT 340f

Receiver Insert into the operating 
aperture

VR 30/2

Plug X6/telephone jack (next to X2)

VR 80

to eBUS of controller calorMATIC 630 or 
auroMATIC 620

VR 90

Mixer module VR 60

Table 5.1   Overview of the controllers which can be used

Accessories and external installation components

Connection

External sensor VRC-DCF (from control set 410/420, see above)

Electronic box plug socket X 8

Maximum thermostat

Electronic box ProE plug “Installation thermostat”

Control fume extraction hood 

and 

Control external gas solenoid 

valve 

and 

Fault signal display 

and 

External heating pump 

and 

Control circulation pump 

and 

Control of an external exhaust gas 

diverter

The accessories are and ancillary connection box which contains the 
functions referred to. It is connected to the control box for control of 
the components: plug socket X 7

Control of external solenoid valve 

or 

Operating and fault signal 

display 

or 

Control external heating pump 

or 

Control circulation 

pump 

The accessories can be used for 

two

 of the functions referred to  - the 

setting of the required function is undertaken on the accessories. It 
is connected to the control box for control of the components: plug 
socket X 7

Flue gas sensor 

Plugs are incorporated in the wiring harness, connection instead of 
standard replacement resistance fitted

Gas pressure monitor

Connection to ProE plug: Installation thermostat, plug socket X 1

Table 5.2  Accessories and external installation components

 Note!

For the gas pressure monitor, several switches 
having safety functions can be connected to the 
small voltage input of the installation 
thermostat (in series).

The water shortage safety device, external controllers 
and similar items must be connected via potential-free 
contacts.
The controllers shown in Table 5.1 can be used for the
control of the Vaillant atmoCRAFT and the heating 
system. The installation should be undertaken in 
accordance with the individual operating instruction 
manuals.

5 Installation