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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

Salus RT520RF Programmable RF Thermostat

Excluding Tax
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