Vaillant VRT15 Room Thermostat | 306777 | 230V Mechanical Control

Description

The Vaillant VRT15 Room Thermostat is a straightforward 230V mechanical room thermostat designed to give reliable temperature control for compatible Vaillant gas fired wall boilers. Its simple dial control makes it easy for homeowners to set a comfortable room temperature, while installers benefit from a dependable, low maintenance control with a bimetallic sensor and clear electrical ratings.

Ideal for replacement or new heating installations, the VRT15 helps maintain consistent comfort by switching the heating system as room temperature changes. With a 5-30°C setting range, IP30 protection and Class II protection when correctly installed, it is a practical choice for domestic central heating systems.

230V

Supply voltage

5-30°C

Temperature range

6A

Max. contact load

IP30

Enclosure protection

Class II

Protection class

2 Years

Manufacturer warranty

Important installation notice: This room thermostat must be installed by a competent person. The installer is responsible for fitting it in accordance with the manufacturer’s instructions and all relevant electrical and heating regulations.

Compatibility note: The Vaillant VRT 30 is intended for use with compatible Vaillant gas fired wall boilers. Always confirm compatibility with the specific boiler and control configuration before ordering or installation.

Useful information: For accurate temperature sensing, mount the thermostat on an insulated, flat and solid wall, away from direct heat sources, draughts and areas affected by direct sunlight.

Key Features

Simple Dial Control

The easy to use rotary control allows homeowners to adjust the desired room temperature quickly without complicated menus or programming.

Bimetallic Temperature Sensor

A proven bimetal sensor monitors room temperature and helps the heating system respond as conditions change.

230V Operation

Operating at 230V AC, the VRT 30 is designed for standard mains powered heating control applications.

Wide Temperature Range

The 5-30°C adjustment range provides flexible control for everyday comfort, energy management and different seasonal requirements.

Protected Enclosure

The IP30 rated enclosure and Class II protection support safe, dependable operation when installed correctly.

Technical Specifications

General

Brand

Vaillant

Model

VRT15

Manufacturer Part Number (MPN)

306777

Product type

Mechanical room thermostat

Electrical

Supply voltage

230V AC

Protection class

Class II, when correctly installed

Performance

Sensor element

Bimetallic

Temperature setting range

5-30°C

Switching difference

1K or less

Permissible humidity

Up to 95%, non condensing

Protection & Warranty

Enclosure rating

IP30

Mounting requirement

Insulated, flat and solid wall

Manufacturer warranty

2 years, subject to manufacturer terms

Frequently Asked Questions

What is the Vaillant VRT15 used for?

The Vaillant VRT15 is a 230V mechanical room thermostat used to control room temperature in compatible Vaillant gas fired wall boiler installations. It switches the heating system to help maintain the selected comfort level.

Is the VRT15 suitable for DIY installation?

No. The manufacturer states that the thermostat should be installed by a competent person. A qualified heating or electrical installer should carry out the work in line with the manufacturer’s instructions and applicable UK regulations.

What temperature range does it offer?

The VRT15 provides a 5-30°C temperature setting range, giving homeowners practical control over indoor comfort throughout the year.

Where should the thermostat be fitted?

It should be mounted on an insulated, flat and solid wall. Avoid locations affected by draughts, direct sunlight, heat sources or poor air circulation, as these can affect temperature sensing.

Does the VRT15 include a programmer?

No. The VRT15 is a mechanical room thermostat, not a programmable timer. It provides manual temperature control rather than scheduled heating periods.

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