RT520RF Boiler Plus Compliant Thermostat - Cool Energy Shop
RT520RF Boiler Plus Compliant Thermostat - Cool Energy Shop

RT520RF Boiler Plus Compliant Thermostat


Regular price£89.88

  • International shipping available
  • Low stock - 3 items left
  • Inventory on the way

RT520 Boiler Plus Compliant Thermostat

The RT520 is the latest addition to SALUS’ tried and tested RT range of thermostat heating controls.

With a new on-board load compensation feature, it offers the most cost effective fully compliant Boiler Plus solution on the market providing the homeowner with optimum efficiency and maximum heating control comfort.

The wired RT520 thermostat includes all the features of the previous RT series with a larger more intuitive LCD display and a handy new suite of additional operational and efficiency functions. 



Load Compensation

Load Compensation is one of the 4 energy saving features that makes a system Boiler Plus compliant. Therefore the RT520 will be the most cost effective fully compliant thermostat option on the market.

Taking the most commonly used OpenTherm protocol compatible with most new boilers sold in the UK, on board load compensation allows the homeowner to more efficiently manage their heating and reduce energy and costs.


OpenTherm provides more precise control on the boiler through the control of the gas valve.

Optimisation Functions

Optimum Start and Optimum Stop.

New Larger Clear easy to read LCD

Simple, quick and straightforward operation and setup for all users.

TPI (Time Proportional & Integral)

‘self-learning’ Functionality

More precise heating control with increased comfort and improved energy efficiency.

ErP Rating V

Improved ErP rating means better efficiency rating of the whole system and total cost reductions. ErP IV is a benchmark minimum for some EU markets.

Service Mode

Thermostat can be programmed to ensure home occupier is aware a boiler service is required and landlord can access to action.

Landlord PIN

PIN entry option for landlord/building owner only access to certain settings and menus.

Battery operated

Simple and quick to install with no 230v wires.

868Mhz Wireless (RT520 RF)

Wireless free installation, excellent range and pre-paired out of the box.

5 year warranty

For maximum peace of mind.

Basic Specification

Power supply

2 x AA Batteries


5°C ~ 32.5°C


95mm x 118mm x 26mm (HxWxD)

RF Frequency (RT520RF)

868Mhz (up to 30m range)

Additional Features

• Volt free contacts

• Multi generation coding

• Compatible with existing range of SALUS receivers






Use collapsible tabs for more detailed information that will help customers make a purchasing decision.

Ex: Shipping and return policies, size guides, and other common questions.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Customer Reviews

Based on 1 review Write a review

You may also like

Don't take our word for it


Ordered a heat pump from these guys, cannot thank them enough for the help and advice given.


Trust Pilot


Really helpful company, easy to deal with, no pressure selling and seem to know everything when it comes to heat pumps. They explained everything we needed and how it would work simply for us to understand.


Trust Pilot


We have just had our boiler replaced with a Cool Energy invertech heat pump. From initial enquiry through to recommending a local installer, we cant fault the service. The heat pump is very quiet and so far seems very efficient to run. Very happy!


Trust Pilot