Plugwise connection table
Connect Anna and Adam correctly to your boiler, heat pump and district heating.

Brands
Is your heat source not listed here? Please contact us and we will find out how it can be connected.
These connection details have been compiled with care. Our goal is that all information is correct and complete. But of course there can always be an error somewhere. We are not liable for any consequences of that error.
Control
OpenTherm
OpenTherm control is suitable for central heating boilers and heat pumps with an OpenTherm thermostat connection. The wires are polarity independent, so it doesn’t matter which wire you connect on the left or right.
With OpenTherm your heat source is controlled in a modulating way. This means that if little heating is required, a lower supply temperature can be requested. This makes it the most economical way of heating.
On/Off
On/Off control is suitable for central heating boilers, heat pumps and district heating with a 24V potential-free thermostat connection. The wires are polarity independent, so it doesn’t matter which wire you connect on the left or right. You can switch your heat source on or off via on/off.
You can often set the boiler temperature that is used on your heat source. You can set this lower to heat more efficiently. With the Adam HA you have to enter this temperature in the settings of Adam HA. This way Adam HA knows with which temperature to calculate.
Readjustment / Post regulation
For example with district heating, heat pumps and cascade control.
In some situations with district heating and heat pumps, hot water always flows around as soon as you open the radiator. With boilers and heat pumps, this is sometimes also referred to as weather-dependent control. There is therefore no thermostat present. Then use Adam HA with a zone control that controls the radiators and underfloor heating. Then you do not connect Adam HA to the heat source. Then, in Adam HA, turn on the Uncontrolled heat source feature in the advanced heating settings. Also enter the boiler temperature that Adam HA can use to calculate with. Then Adam HA opens the radiators and underfloor heating if that zone needs to be heated.
If Adam HA is used as a readjustment / post regulation, there must always be warm water flowing around. This situation is therefore not mentioned separately below.
Anna is not suitable for use as readjustment / post regulation. Then use Anna in combination with Adam HA and a zone control.

Phone: +32 2 357 28 28
E-mail: info.be@groupe-atlantic.com
Website: acv.com/belgie
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Kompakt HRE eco – 1 heating circuit – zone 1 (LT) |
|
11 and 12 |
|
6 and 7 |
Kompakt HRE eco – 2 heating circuits – zone 1 (LT) |
|
11 and 12 |
|
11 and 12 |
Kompakt HRE eco – 2 heating circuits – zone 2 (HT) |
|
|
6 and 7 |

Installers: +31 (0)544 391777
Consumers: info@atagverwarming.nl
Website: atagverwarming.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
50 series |
|
|
1 and 2 | |
A-series (until early Apr. 2009) |
|
|
3 and 4 | |
A-series Z-ready (as of early April 2009) |
|
1 and 2 |
|
3 and 4 |
BE Series: CZA/CMA/350, 351, 352, 650, 651, 652.952 |
|
|
1 and 2 | |
Blauwe Engel II S-HR |
|
|
22 and 23 | |
E-series (until early April 2009) |
|
|
22 and 23 | |
E-series Z-ready (as of early April 2009) |
|
|
22 and 23 | |
E-series Z-ready (as of February 2013) |
|
1 and 2 |
|
22 and 23 |
Energy M Series Heat Pump |
|
|
TA1 and TA25 | |
Enigma (Comfort) E-SHR |
|
|
22 and 23 | |
Enigma Standard E-SHR |
|
|
2 and 3 | |
HR39T/27T |
|
|
1 and 2 | |
HR Solar Gas Combi HR -ZGC |
|
|
22 and 23 | |
i-Series i20C, i20EC, i28C, i28EC, i32S, i36C, i36EC |
|
Blue connector with OT-LPA |
|
Black connector On/Off |
i Zone Series i22ECZ, i24SZ, i28CZ, i28ECZ, i30CZ, i32SZ, i32ECZ, i35SZ, i36CZ, i36ECZ |
|
Blue connector |
|
Blue connector |
P series |
|
|
||
Perfect II PF-SHR |
|
|
2 and 3 | |
Perfect Intelligence PF-SHR |
|
|
22 and 23 | |
Q Series: Q/Q-CC/Q-Solar |
|
20 and 21 |
|
22 and 23 |
Q Series: Q-Solar |
|
|
22 and 23 | |
Q Series, Q25c, Q30cc, Q38C, Q42c, Q51 |
|
|
23 and 24 | |
SHR Solar gas Combi II SHR-ZGC |
|
|
22 and 23 | |
VR18T/30T/48T |
|
|
1 and 2 | |
XL series |
|
7 and 8 |
|
7 and 8 |
(1) Terminal block/plug is on the underside of the boiler. Set parameter 60 to 02, see also manual page 23.
(2) Only in combination with an OpenTherm Low Power Adapter (OT-LPA), item AA08400U. This adapter must be connected between the boiler and Anna/Adam HA.
Phone: +31 (0)318 54 47 00
Email: info.nl@groupe-atlantic.com
Website: atlanticclimate.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Aurea Hybrid Add-On Control Box |
|
Boiler and square with circle |
|

Installers: +31 (0)20 565 9480
Consumers: +31 (0)20 565 9420
Website: www.awb.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
ThermoBasic 23 T |
|
|
See terminal block (1) | |
ThermoElegance 3, 4, 6 (as of April 2001) |
|
|
RT 24V | |
ThermoElegance 6 & 35T |
|
Orange/yellow on terminal block |
|
Orange/yellow on terminal block |
ThermoElegance A 1,2,3,4,4 Solo,5,6 (as of April 2001) |
|
|
RT 24V | |
ThermoElegance Advance 25-A/3 30-A/3 35-A/3 |
|
|
RT 24V | |
ThermoGrand (as of April 2001) |
|
|
3 and 4 | |
ThermoMaster 2HR (from April 2001) |
|
See terminal block (1) |
|
See terminal block (1) |
ThermoMaster 2HR 32.50 (from April 2001) |
|
Via interface: wire red/white and blue/white |
|
22 and 23 |
ThermoMaster 3HR |
|
See terminal block (1) |
|
See terminal block (1) |
ThermoMaster C-XV 25, 30, 35 |
|
|
RT 24V | |
ThermoMaster HRG |
|
Orange/yellow on terminal block |
|
Orange/yellow on terminal block |
ThermoMaster VR 23.xx series, 24 |
|
|
Plug | |
ThermoMaster VR 24 (T) |
|
See terminal block (1) |
|
See terminal block (1) |
Other ThermoMaster 2HR series (from April 2001) |
|
See terminal block (1) |
|
See terminal block (1) |
ThermoSystem HRM/3 (from April 2001) |
|
|
(1) Terminal block/plug is at the bottom of the boiler
(2) Optionally with OpenTherm module 0020092426
Installers: +31 578 576 836
Email: info@belimo.nl
Website: belimo.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
CQ230A-T – Heating | No | Yes(1) | Heating valve: N, L and L2 | |
CQ230A-T – Cooling | No | Yes(2) | Cooling valve: N, L and L2 | |
LR230A – Heating | No | Yes(1) | Heating valve: N, L and L2 | |
LR230A – Cooling | No | Yes(2) | Cooling valve: N, L and L2 |
(1) If you only want to heat, you need the 230V relay box.
(2) If you want to heat and cool, you need the Relay Box Heating and Cooling District Heating.

Phone: +31 (0)570 602 500
Website: nefit-bosch.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
26/30/35/42 HRC |
|
O and T of OTM1 (7) |
|
1 and 2 (1) |
24/30/35/42 HRC II |
|
O and T of OTM4 (6) |
|
2 and 4 (2) |
30 HRC Condensate 6000W |
|
|
||
28/35/42 HRS II |
|
O and T of OTM4 (6) |
|
2 and 4 (2) |
22/28/35/42 HRS TOP |
|
O and T of OTM1 (7) |
|
1 and 2 (1) |
Condens 3000W (All versions) |
|
Via EMS-OT converter on black plug on the back of the control unit (5) |
|
1 and 2 (3) |
Compact CW 3,CW 4,CW5 |
|
Via EMS-OT converter on the orange plug (5) |
|
Green plug |
EHLE 17, 23 ,27, 34, 39 and 78 |
|
|
7 and 8 | |
TurboTower I, TurboTower Solar I |
|
O and T of OTM1 (7) |
|
1 and 2 (1) |
PRC I |
|
|
1 and 2 (3) | |
PRC II |
|
|
In black block OpenTherm |
(1) Supplied resistor 1.5 kΩ, 1 W between terminals 2 and 4.
(2) Set parameter 7F to 04
(3) Resistor 1.5 kΩ, 1 W between terminals 2 and 4. Not included as standard and can be ordered via Bosch with article number 89003193050
(4) Possible for devices from May 2003 (> FD384). Older units (FD385 to FD484) have different connections, contact the manufacturer.
(5) EMS-OT converter is required.
(6) OpenTherm module OTM4 is not supplied as standard and can be ordered through Bosch with article number 7719003406.
(7) OpenTherm module OTM1 is supplied as standard with some models. If not available, order via Bosch with article number 7719002314, and connect to 314.

Phone: +31 (0)522 46 99 44
Email: info@brinkclimatesystems.nl
Website: brinkclimatesystems.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Allure series (before 2010) |
|
OpenTherm |
|
|
Allure Series v5.0 (After 2010) |
|
|
||
Elan (equipped with E-Bus) |
|
|
||
Elan E (equipped with E-Bus) |
|
|
||
Flair IGX |
|
|
K1 and K2 | |
Furore |
|
|
K1 and K2 | |
H series |
|
|
K and T or K1 and K2 | |
N series |
|
|
2 and 5 | |
SWB series (until 1987) |
|
|
13 and 14 | |
SWB series (from 1987) |
|
|
2 and 5 or K1 and K2 | |
SWB HR Series |
|
OpenTherm |
|
Phone: +32 (0)15 46 55 00
Contact: Contact form
Website: buderus.com
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Logamax plus |
|
Via EMS-OT converter (green connection) |
|
1 and 2 green |
Logano plus GB102/GB102S |
|
Via EMS-OT converter (green connection) |
|

Phone: +31 (0)88 324 54 21
Email: aangenaam@daikin.nl
Website: daikin.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Altherma – Primary heating |
|
|
X2M/4 and X2M/1 | |
Altherma – Primary cooling |
|
|
X2M/4 and X2M/2 | |
Altherma – Secondary heating |
|
|
X2M/4 and X2M/1a | |
Altherma – Secondary cooling |
|
|
X2M/4 and X2M/2a | |
Altherma – Cooling contact |
|
|
X2M/32 and X2M/33 | |
Altherma 3 HF/HW – Primary heating |
|
|
X2M/30 and X2M/35 | |
Altherma 3 HF/HW – Primary cooling |
|
|
X2M/30 and X2M/34 | |
Altherma 3 HF/HW – Secondary heating |
|
|
X2M/30 and X2M/35a | |
Altherma 3 HF/HW – Secondary cooling |
|
|
X2M/30 and X2M/34a | |
Altherma 3 HF/HW – Cooling contact |
|
|
X2M/3 and X2M/4 | |
Altherma 3 R ECH₂O – Primary heating |
|
|
X12M/22 and X12M/15 | |
Altherma 3 R ECH₂O – Primary cooling |
|
|
X12M/22 and X12M/16 | |
Altherma 3 R ECH₂O – Secondary heating |
|
|
X12M/22 and X12M/19 | |
Altherma 3 R ECH₂O – Secondary cooling |
|
|
X12M/22 and X12M/20 | |
Altherma 3 R ECH₂O – Cooling contact |
|
|
X12M/9 and X12M/10 | |
Altherma R hybrid Intergas – Primary heating |
|
|
X2M/4 and X2M/1 | |
Altherma R hybrid Intergas – Primary cooling |
|
|
X2M/4 and X2M/2 | |
Altherma R hybrid Intergas – Secundary heating |
|
|
X2M/4 and X2M/1a | |
Altherma R hybrid Intergas – Secundary cooling |
|
|
X2M/4 and X2M/2a |
(1) Note: 230V on/off contact on the Daikin indoor unit. Use the Anna 230V for this. With Adam HA, use the Relay box 5V if you only want to heat. If you want to heat and cool, you need the Relay Box Heating and Cooling Heat Pump and the Cooling feature.
(2) Various settings have to be adjusted in the user interface so that the installation knows that it is controlled externally such as eg; Unit control method. For this, see the installation manual of the Daikin indoor unit.
(3) Make use of the Relay Box Heating and Cooling Heat Pump together with the Adam HA and the Cooling feature . You can’t cool with Anna.
(4) Heating and cooling control can also be controlled by a cooling contact. You then need the Relay box 5V and Relay box 230V . However, the recommended way is through the Relay Box Heating and Cooling Heat Pump.

Phone: +34 91 628 14 40
Email: export@elnur.es
Website: elnur-global.com
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Mattira Combi CMX15i CMX18i |
|
|
TA | |
Mattira System MAS15-MAS18 |
|
|
TA |

Phone: +31 (0)76 5725 730
Email: helpdesk@ferroli.nl
Website: ferroli.com/nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Blue City 300 |
|
3 and 4 |
|
3 and 4 |
BlueSense 3,4,5 |
|
7 and 8 |
|
7 and 8 |
Combifor MFT |
|
|
terminal block | |
Domina C24E and F24E |
|
|
terminal block | |
Domina F124E and C124E |
|
7 and 8 |
|
5 and 6 |
Econforte HMC and HMA series |
|
|
1 and 2 | |
Econpact 125C, 127A/C, 135A/C |
|
9 and 10 |
|
1 and 2 |
Econpact 225C, 235C |
|
9 and 10 |
|
1 and 2 |
Econpact 3(HP), 4(HP), 5 |
|
9 and 10 |
|
1 and 2 |
Econpact 50A/B, 27A/C, 35A/C |
|
3 and 4 |
|
11 and 12 |
MegaDens 3, 4, 4SHR, 5, 5SHR |
|
7 and 8 |
|
7 and 8 |
MegaLux 5, 6, A JA 7 and 8 terminal block |
|
7 and 8 |
|
7 and 8 |
MegaStar 3F, 3C |
|
terminal block |
|
terminal block |
NAV24 EL |
|
|
3 and 4 | |
Other NA, NAV, NE, NEV Series |
|
|
terminal block | |
SG-, HG-, A series 1988/1990 |
|
|
1 and 2 | |
SG, HG, HGW series |
|
|
1 and 2 | |
SVR DT 22 (until September 1998) |
|
|
terminal block | |
SVR DT 22 (from September 1998) |
|
|
terminal block | |
ULTIMA 3S, 4S, 3, 4, 5, A |
|
7 and 8 |
|
5 and 6 |
URS / CCS |
|
5 and 6 |
|
1 and 2 |

Phone: +31 (0)20 703 3500
Website: resideo.com/nl/
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
VC8010/VC8015 three-way valve (district heating) |
|
|
Terminal block wires brown and black |

Phone: +31 (0)88 8788700
Email: info@intergas.nl
Website: intergas-warming.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
G 22 VRT (W) Low Nox ps |
|
|
6 and 7 | |
G 22/32/42 VR(W) Low NOx ps |
|
|
6 and 7 | |
G22/32/42 VR-Tronic |
|
|
6 and 7 | |
H22 VR Low NOx-ps VRS(W) / VRM(W) / VRT(W) |
|
|
6 and 7 | |
HR/HRW 220/250/280 |
|
|
6 and 7 | |
HR/HRW Comfort Line 250/280 |
|
|
6 and 7 | |
Kombi Compact HR 22, 28, 28/24, 36/30 |
|
11 and 12 |
|
6 and 7 |
Kombi Compact HRE 24/18, 28/24, 36/30, 36.48 (RF2) |
|
11 and 12 |
|
6 and 7 |
Kombi Compact Hreco 24/30/36 |
|
11 and 12 |
|
6 and 7 |
Compact Solo HR 12/22/28 |
|
11 and 12 |
|
6 and 7 |
Compact Solo HRE 12/18/24/30 |
|
11 and 12 |
|
6 and 7 |
Compact Tap HR |
|
11 and 12 |
|
6 and 7 |
Prestige CW 5/6 |
|
11 and 12 |
|
6 and 7 |
XTREME 24/30/36 |
|
T1 X12 1/2 |
|
T1 X12 1/2 |

Installers: +31 (0)88 427 5770
Consumers: Contact form
Website: intergas-warming.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Aqua-Max |
|
1 and 2 |
|
1 and 2 |
Base Cube |
|
2a and 2b |
|
3a and 3b |
Base Cube 2nd thermostat |
|
|
4a and 4b | |
Basic Cube (until September 2011) |
|
3 and 4 |
|
1 and 2 |
CombiFort |
|
K3 (2x) |
|
K1 (2x) |
CombiFort 2nd thermostat |
|
|
K2 (2x) | |
CombinAir – zone 1 (LT) |
|
|
K1 (2x) | |
CombinAir – zone 2 (HT) |
|
|
K2 (2x) | |
CombiPact |
|
K3 (2x) |
|
K1 (2x) |
CombiPact 2nd thermostat |
|
|
K2 (2x) | |
Comfort Classic |
|
K3 (2x) |
|
K1 (2x) |
Comfort Classic 2nd thermostat |
|
|
K2 (2x) | |
HP Cool Cube – Zone 1 (LT) |
|
Via Base Cube (boiler) |
|
Divider 2 and 3 |
HP Cool Cube – see Base Cube 2nd thermostat | ||||
HP Cube – Zone 1 (LT) |
|
Via Base Cube (boiler) |
|
Divider 2 and 3 |
HP Cube – see Base Cube 2nd thermostat | ||||
HR GAS Kombi series |
|
K3 (2x) |
|
K1 (2x) |
Kli-Max |
|
7 and 8 |
|
5 and 6 |
Kli-Max 2 |
|
1 and 2 |
|
3 and 4 |
Multi-solar series |
|
K3 (2x) |
|
K1 (2x) |

Phone: +31 (0)570 602 500
Contact: Contact form
Website: nefit-bosch.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
THR |
|
|
1 and 2 | |
ZWB 21S/21Z/30S (Ecostar) |
|
|
2 and 3 | |
ZWBR 7-25 |
|
|
1 and 2 (1) | |
ZWE all types |
|
|
1 and 2 (1) | |
ZWR all types |
|
|
1 and 2 (1) |

Phone: +31 (0)570 602 500
Contact: Contact form
Website: nefit-bosch.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
9000i |
|
|
1 and 2 | |
BaseLine HRC 24/CW3, 24/CW4 |
|
Via EMS-OT converter (green connection) |
|
1 and 2 green |
EcomLine Classic HR(C) |
|
|
1 and 2 | |
EcomLine Economy HRC 23V, 23/28V |
|
|
1 and 2 | |
EcomLine Elite HRC 24/CW4, 30/CW5 |
|
Via EMS-OT converter (green connection) |
|
5 and 6 green |
EcomLine Excellent HR(C) |
|
|
1 and 2 | |
Economy HRC 24 |
|
|
1 and 2 | |
Economy VR(C) 24, 24/CW4, 24(S) |
|
|
1 and 2 | |
HRC 23VT |
|
|
1 and 2 | |
ProLine HRC 24/CW3, 24/CW4, 30/CW5 |
|
Via EMS-OT converter (green connection) |
|
1 and 2 green |
ProLine NxT HRC 24/CW3, 24/CW4 30/CW5 |
|
1 and 2 orange |
|
1 and 2 orange |
SmartLine Basic HR(C) 24, 24/CW3, 24/CW4 |
|
Via EMS-OT converter (green connection) |
|
1 and 2 green |
SmartLine HR(C) 11, 24/CW3, 24/CW4 |
|
Via EMS-OT converter (green connection) |
|
1 and 2 green |
TopLine AquaPower (Plus) I/II HRC |
|
Via EMS-OT converter (green connection) |
|
1 and 2 green |
TopLine Compact HRC 25/CW4, 30/CW5 |
|
Via EMS-OT converter (green connection) |
|
1 and 2 green |
TopLine HR 70/100 |
|
Via EMS-OT converter (green connection) |
|
5 and 6 green |
TopLine I/II HR 25/30/45 |
|
Via EMS-OT converter (green connection) |
|
1 and 2 green |
TopLine II HR 70/100 |
|
Via EMS-OT converter (green connection) |
|
1 and 2 green |
TrendLine AquaPower Plus (II) HRC 25/CW6 30/CW6 |
|
Via EMS-OT converter (green connection) |
|
1 and 2 green |
TrendLine HRC (II) 25/CW4, 30/CW5 |
|
Via EMS-OT converter (green connection) |
|
1 and 2 green |
Turbo HR(C) |
|
|
1 and 2 | |
VR FC 2510 F/S(C) |
|
|
Knows | |
VR FC 2520/3030 F/S(C) |
|
|
5 and 6 |
(1) EMS-OT converter is required.
Phone: +31 (0)882 43 30 70
Email: helpdesk@plugwise.com
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Adam HA |
|
On thermostat icon |
|

Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Qbooster – Heating(manual) |
|
|
X2 | |
Qbooster – Cooling |
|
|
X5 |

Phone: +31 (0)570 602 500
Contact: Contact form
Website: nefit-bosch.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Aquatronic |
|
|
2 and 3 | |
ER electronic/EHRE/EHLE |
|
|
2 and 3 | |
ERE 160, 200, 240, 300 |
|
|
2 and 3 | |
Matador |
|
|
2 and 3 | |
Maxicom |
|
|
2 and 3 | |
Multicom 26 HRC/28 |
|
|
2 and 3 | |
NOx HRC 25/35/2560/3560/2510 |
|
|
2 and 3 | |
NOxTRONIC HRC 25/35 |
|
|
2 and 3 | |
TP 14/22 |
|
|
2 and 3 |

Installer: +31 (0)55 5496969
Email: info@remeha.nl
Website: remeha.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Aquanta |
|
7 and 8 |
|
7 and 8 |
Avanta |
|
3 and 4 |
|
3 and 4 |
Avanta Ace |
|
R-BUS |
|
R-BUS |
Calenta / Calora Tower |
|
On/off OT |
|
On/off OT |
Calenta Ace |
|
R-BUS |
|
R-BUS |
Elga |
|
5 and 6 |
|
|
Elga Ace |
|
R-BUS |
|
R-BUS |
Gas 1DXR |
|
|
10 and 11 | |
Gas 1DXR-E |
|
|
9 and 10 | |
Mercuria |
|
R-BUS |
|
R-BUS |
Mercuria Ace |
|
R-BUS |
|
R-BUS |
Micron 1 and 2 |
|
|
A and B | |
Micron Combi |
|
|
2 and 3 or A and B | |
Optimum Combi |
|
|
20 and 21 | |
Optimum Solo |
|
|
20 and 21 | |
Quinta 25/28/30/35 Combi |
|
1 and 2 |
|
3 and 4 |
Quinta 25/30/45/65/85 Solo |
|
1 and 2 |
|
3 and 4 |
Quinta Ace |
|
On/off OT |
|
On/off OT |
Quinta pro |
|
On/off OT |
|
On/off OT |
Selecta (Plus) |
|
5 and 6 |
|
2 and 3 |
Tzerra / Tzerra Plus / Tzerra Hybrid |
|
On/off OT |
|
On/off OT |
Tzerra Ace |
|
R-BUS |
|
R-BUS |
W21 Combi/Solo ECO |
|
1 and 2 |
|
3 and 4 |
W23 Combi |
|
|
1 and 2 | |
W23 Solo |
|
|
20 and 21 | |
W28 Combi/Solo ECO |
|
1 and 2 |
|
3 and 4 |
W40 and W60 ECO |
|
|
1 and 2 | |
W40-m and W60-m ECO |
|
13 and 14 |
|
2 and 2 |
(2) See the FAQ for how to connect: Connecting to a Remeha Tzerra Ace.

Installer: +32 (0)3 451 24 24
Email: info@thercon.be
Website: thercon.be
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Thermastage R410A |
|
|
||
Thermastage R32 |
|
Terminal board TBTS Z1 or Z2 |
|
(1) Loria/Thermastage feature is required.

Installers: +31 (0)10 4595415
Email: info-nl@viessmann.com
Website: viesmann.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
Vitodens 100 W |
|
On/Off connection |
|
with external H4 (1) |
Vitodens 100-W B1KA |
|
X21.1 and X21.2 |
|
X21.1 and X21.2 |
Vitodens 100-W B1KC |
|
X21.1 and X21.2 |
|
X21.1 and X21.2 |
Vitodens 100-W WB1A |
|
X3.3 and X3.4 |
|
X3.3 and X3.4 |
Vitodens 100-W WB1B |
|
X21.1 and X21.2 |
|
X21.1 and X21.2 |
Vitodens 100-W WB1C |
|
X21.1 and X21.2 |
|
X21.1 and X21.2 |
Vitodens 111-W |
|
|
with external H4 (1) | |
Vitodens 111-W B1LA |
|
X21.1 and X21.2 |
|
X21.1 and X21.2 |
Vitodens 111-W B1LB |
|
X21.1 and X21.2 |
|
X21.1 and X21.2 |
Vitodens 111-W B1LD |
|
X21.1 and X21.2 |
|
X21.1 and X21.2 |
Vitodens 200 W |
|
|
with external H4 (1) | |
Vitodens 200-W B2HA |
|
|
with external H4 (1) | |
Vitodens 200-W B2KA |
|
|
with external H4 (1) | |
Vitodens 200-W WB2B ≥45 kW |
|
|
with external H4 (1) | |
Vitodens 200-W WB2B 26 + 35 kW |
|
A8 OT+ and OT- (3) |
|
with external H4 (1) |
Vitodens 200-W WB2C |
|
|
with external H4 (1) | |
Vitodens 222-W |
|
|
with external H4 (1) | |
Vitodens 222-W B2LA |
|
|
with external H4 (1) | |
Vitodens 222-W WS2A |
|
A8 OT+ and OT- (3) |
|
with external H4 (1) |
Vitodens 222-W WS2B |
|
|
with external H4 (1) | |
Vitodens 300-W WB3A |
|
|
with external H4 (1) | |
Vitodens 333 WS3A |
|
|
with external H4 (1) | |
Vitopt 1000 WH1 |
|
|
X4.1 and X4.2 | |
Vitodens 1000 WB1 |
|
|
X4.1 and X4.2 |
(2) Separate module Extension OpenTherm is available from Viessmann Nederland B.V.
(3) Terminals OT- and OT+ are located on extension A8 in the boiler.

Phone: +31 (0)20 565 9420
Contact: Contact form
Website: vaillant.nl
Heat source | OpenTherm | On terminals | On/Off | On terminals |
---|---|---|---|---|
ecoCOMPACT VSC 306 4-5 90, 4-5 90 R1, 4-5 150 R1, 4-5 150 |
|
Connecting OT and Ground\RT24V |
|
RT 24 |
EcoFITpro VUW 256,306,356 |
|
Connecting OT and ground\RT24V on built-in On/Off module VR33 |
|
RT 24 |
ecoTEC classic 2019 VHR 18-24/5-3, 18-24/5-3, 23-28/5-3, 23-28/5-3 EXP, 28-34/5-3 |
|
Connecting OT and ground\RT24V on built-in On/Off module VR33 |
|
RT 24 |
ecoTEC exclusive VHR 25-35/5-7, 35-45/5-7, 25/5-7 + QL 75 boiler |
|
Connecting OT and ground\RT24V on built-in On/Off module VR33 |
|
RT 24 |
ecoTEC plus VHR 20-24/5-5, 25-30/5-5, 30-34/5-5, 35-38/5-5, 34/5-5 I, 25/5-5S, 35-5/5 -5S, 34/5-5 I with 25L boiler, 45/4-SA, 65/4-SA |
|
Connecting OT and ground\RT24V on built-in On/Off module VR33 |
|
RT 24 |
ecoTEC Pro/classic VHR CW 3/5-3, 3/5-3 EXP, 4/5-3, 4/5-3 EXP, 5/5-3 |
|
Connecting OT and Ground\RT24V |
|
RT 24 or on 3 and 4 |
hrEXCLUSIVE VHR 35S, 35C, 45S, 65S |
|
|
3 and 4 | |
hrEXCLUSIVE from 2006 VHR 20/4S, 25/4S, 35/4S, 30/4C, 35/4C, 45/4S, 65/4S |
|
|
3 and 4 | |
hrPro CW 3/3, 4/3, 4/3 EXP |
|
|
3 and 4 | |
hrSOLIDE (until 2006) VHR 10S, 18S, 24S, 18-22C, 24-28C |
|
A and B (3) |
|
3 and 4 |
hrSOLIDE (2006 onwards) VHR 18-22/3C, 24-28/3C, 30-34/3C, 34/3 IC |
|
Connecting OT and ground\RT24V on built-in On/Off module VR33 |
|
3 and 4 |
hrSOLIDEplus VHR 18-22/3-5, 24-28/3-5, 30-34/3-5, 34/3-5 |
|
Connecting OT and ground\RT24V on built-in On/Off module VR33 |
|
3 and 4 |
thermoCOMPACT 2000 VC/VCW 254XE and 255E |
|
|
3 and 4 (2) | |
thermoCOMPACT 2000/2 VC/VCW 254XE and 255E |
|
|
3 and 4 | |
thermoCOMPACT HR VU 18/6 E and 23/6 E, VUW 18-22/6 E and 23-28/6 E |
|
|
3 and 4 (2) | |
thermoCOMPACT from 2008 VC/VCW 254/4 and 255/4 |
|
|
3 and 4 | |
thermoCOMPACT VC/VCW 254/3 and 255/3, CWK 245/3 |
|
|
3 and 4 | |
thermoCOMPACT VC/VCW 180 (X)E to 282 E, CWK 24-12, 24-12 SO 28 and 24-12 E |
|
|
3 and 4 (2) |
(2) Pump function in position 1.
(3) When used as an OpenTherm thermostat: convert D20 function to OpenTherm