Vaillant VR 66/2 2-Zone Control Centre | 0020135785 | eBUS

Description

The Vaillant VR 66/2 Control Centre is a purpose built two zone wiring centre for Vaillant heating systems. It enables eBUS controllers, room thermostats, motorised valves, multi zone heating and domestic hot water cylinder controls to work together as one integrated system, helping improve comfort and heating control across the home.

Ideal for system and open vent boiler installations, the VR 66/2 provides a tidy central connection point for heating controls. It supports up to two heating zones plus hot water control and is designed for professional installation in accordance with current UK electrical requirements.

2 Zones

Heating zones plus DHW

230 V

50/60 Hz supply

20 W

Power consumption

300 m

Max eBUS cable length

IP20

Electrical protection

Class I

Earthed appliance

Safety and installation: This control centre must be installed by a competent person and connected to a permanent, correctly earthed 230 V AC supply. All wiring must comply with the relevant UK electrical standards, including BS 7671.

Compatibility: The VR 66/2 is designed for use with compatible Vaillant controls and boilers. It supports selected eBUS controllers, including the VRT 350, VRT 380 and VR 92 configurations, and works with 2 port and 3 port valves. Always confirm control compatibility before ordering.

System benefit: By bringing heating zones, hot water demand and boiler communication together, the VR 66/2 supports more responsive, better organised central heating control.

Key Features

Two Zone Heating Control

Enables independent control of up to two heating zones, helping direct heat where it is needed.

eBUS Connectivity

Connects compatible eBUS controllers to the heating system for coordinated boiler and control operation.

Hot Water Integration

Supports domestic hot water cylinder control, including cylinder thermostat and sensor connections.

Valve Compatibility

Works with compatible 2 port and 3 port motorised valves for flexible system design.

Multiple Operating Modes

A rotary switch provides multi zone and mono zone operating modes to suit the installed control setup.

Compact Wall Mounted Design

Measures just 281.3 mm wide and 49.5 mm deep, making it suitable for discreet installation near the cylinder or system controls.

Technical Specifications

General

Brand

Vaillant

Product

VR 66/2 Control Centre

MPN

0020135785

Application

Two zone heating and domestic hot water control

Electrical

Power supply

230 V, 50/60 Hz

Power consumption

20 W

Maximum relay contact load

2 A

Delay fuse

T 4 A / 250 V

DHW cylinder thermostat contact voltage

230 V

NTC sensor operating voltage

5 V

Electrical protection

IP20

Electrical classification

Class I

Connections and Dimensions

Maximum eBUS cable length

300 m

eBUS cable size

2 x 0.75 mm²

Power cable size

3 x 1.5 mm²

Maximum power cable length

10 m

Height

185 mm

Width

281.3 mm

Depth

49.5 mm

Frequently Asked Questions

What is the Vaillant VR 66/2 used for?

The VR 66/2 is a wiring control centre that links compatible Vaillant boilers, eBUS controllers, thermostats, valves and hot water cylinder controls into one coordinated heating system.

How many heating zones can it control?

It can control up to two heating zones, alongside domestic hot water control, subject to the compatible controls and system configuration.

Which valves is it compatible with?

The VR 66/2 is compatible with suitable 2 port and 3 port motorised valves, allowing flexible zoning and hot water arrangements.

Can it be used with a cylinder thermostat?

Yes. It supports compatible cylinder thermostats and the Vaillant VR 10 sensor, which is supplied separately.

Does it require professional installation?

Yes. The unit requires a permanent 230 V AC, earthed supply and should be installed by a competent installer in line with BS 7671 and manufacturer instructions.

BTU Calculator

BTU & WATT Calculator

Room Dimensions

Length (in m):

Width (in m):

Height (in m):

Room Type

Living Room

Bedroom

Kitchen

Bathroom

Conservatory

Hallway

Glazing Type

Single Glazed

Double Glazed

Triple Glazed

External Walls

0 Wall

1 Wall

2 Walls

3 Walls

4 Walls

Insulation Level

Poor

Average

Good (New Build)

Calculate

Required Heating

0

Watts

0

BTUs