Boiler Plus Compliant Thermostat


AVAILABLE NOW – from your local Merchants

The RT520RF 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 wireless RT520RF 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. 

Please note: We have improved the test / pairing on the RT520RF thermostat. Please follow the procedure below:

The RT520RF is factory pre-paired as standard. When you power up the receiver, the RED LED will flash.

To test that the receiver and thermostat are paired, navigate to the Pairing Menu by choosing Menu > Pairing > TEST. This will display ‘TESTING 10’ on the thermostat. If the receiver and thermostat are paired correctly, the RED and GREEN LED’s on the receiver will flash. To exit test mode, press and hold the Menu button for 3 seconds.

If the RED and GREEN LED’s on the receiver are NOT flashing, you will need to Re-Pair the Thermostat and Receiver. To do this, slide the ON/OFF switch on the receiver to OFF and then slide it back to ON. The RED LED will now flash. Now, enter the pairing process by choosing Menu > Pairing > PAIR. You will now see ‘PAIRING 10’ on the screen. When the RED LED’s stops flashing, the Thermostat and Receiver are paired.

You can test this again by following the above process.



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




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