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Vaillant connection chart
Valiant
Wondering whether a thermostat is suitable for your Vaillant central heating boiler? View the connection table for all Vaillant boiler models here
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The control of the appliance is controlled by the thermostat, this can be done via on/off or modulating.With an on/off control, the appliance is simply switched on or off and this control can also control a valve for district heating, for example. This arrangement is suitable for almost any device.
A modulating heating control allows the burner height of the appliance to burn at different positions. This ensures precise temperature controls and the burner activity of the boiler is precisely adapted to the heat demand. A modulating control thus achieves more efficiency from a low heating capacity.
In the table below you can look up your type of central heating boiler, in the columns next to it it is indicated which thermostat is suitable for your appliance and to which connection you should connect it. |
Connection table
|
Type |
On off |
Opentherm |
||
|
ecoTEC plus VHR 20-24/25-30/30-34 |
And |
RT 24 |
And |
OT and ground on supplied OpenTherm module VR33 |
|
ecoTEC classic VHR CW 3/5, 3/5 EXP, 4/5, 4/5 EXP, 5/5 |
And |
RT 24 |
And |
Only with optional Opentherm module VR33 art. no 0020017859 |
|
ecoTEC pro VHR CW 3/5, 3/5 EXP, 4/5, 4/5 EXP |
And |
RT 24 |
And |
Only with optional Opentherm module VR33 art. no 0020017859 (1) |
|
hrPRO serie VHR CW 3/3, 4/3, 4/3 EXP |
And |
3 in 4 |
And |
Only with optional Opentherm module VR33 art. no 0020017859 |
|
hrSOLIDE (2000 - 2006) VHR 10S, 18S, 24S, 18-22C en 24-28 C |
And |
3 in 4 |
And |
A en B (4) |
|
hrSOLIDE (2006 onwards) VHR 18-22/3, CVHR 24-28/3, 30-34/3, 34/3 IC |
And |
3 in 4 |
And |
Only with optional Opentherm module VR33 art. no 0020017859 (1) |
|
hrSOLIDEplus VHR 18-22/3-5, 24-28/3-5, 30-34/3-5, 34/3-5 |
And |
3 in 4 |
And |
OT and ground on supplied OpenTherm module VR33 |
|
hrEXCLUSIEF VHR 35 S, 35 C, 45 S, 65 S |
And |
3 in 4 |
N.V.T. |
|
|
hrEXCLUSIEF (vanaf 2006) VHR 20/4 S, 25/4 S, 35/4 S, 30/4 C, 35/4 C, 45/4 S, 65/4 S |
And |
3 in 4 |
And |
Only with optional Opentherm module VR33 art. no 0020017859 (1) |
|
thermoCOMPACT (from 2008) VC 454/4, 255/4, VCW 254/4, 255/4 |
And |
3 in 4 |
N.V.T. |
|
|
thermoCOMPACT VC 254/3, 255/3, VCW 254/3, 255/3, CWK 245/3 |
And |
3 in 4 |
N.V.T. |
|
|
thermoCOMPACT HR VU 18 / 6E, 23 / 6E, VUW 18-22 / 6E, 23-28 / 6E |
And |
3 in 4 (3) |
N.V.T. |
|
|
thermo COMPACT 2000/2 VC 254 XE, 255 E, VCW 254 XE, 255 E |
And |
3 in 4 |
N.V.T. |
|
|
thermo COMPACT 2000 VC 254 XE, 255 E, VCW 254 XE, 255 E |
And |
3 in 4 (3) |
N.V.T. |
|
|
thermo COMPACT VC/VCW 180 (X) E t/m 282 E, 24-12, 24-12 SO 28, 24-12 E |
And |
3 in 4 (3) |
N.V.T. |
|
| (1) Opentherm module VR33 available here |
| (2) Resistance between 4 and 5: 220 Ohm/5W |
| (3) Pump function in position 1 |
| (4) When used as OpenTherm thermostat: convert D20 function to OpenTherm |