SALUS CONTROLS
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.
Characteristics
- Simple, quick and straightforward operation and setup
- ErP Rating V
- PIN entry option
- 5 year warranty ?️
- Volt free contacts
- Multi generation coding
- Compatible with existing range of SALUS receivers
Features
| Feature | Specification |
|---|---|
| Product | Boiler Plus Compliant Thermostat |
| Power supply | 2 x AA Alkaline batteries ? |
| Communication | Wired |
| Scale | 5 - 33.5°C |
| Measuring steps | 0.1°C or 0.5°C |
| Output | OpenTherm or NC/COM/NO-Voltage free output |
| Control algorithm | TPI (Time Proportional & Integral): ±0.25°C or ±0.5°C |
| Dimensions (mm) | 118 x 95 x 26 |
Product Dimensions
The thermostat has a width of 118 mm, a height of 95 mm, and a depth of 26 mm. The front view shows the LCD display and control buttons. The side view shows the depth.
Connection Scheme
Boiler Connection Scheme: This scheme shows the RT520 thermostat connected to a boiler. The thermostat is powered by 2 x AA batteries (3V). The thermostat has terminals labeled NC (Normally Closed), COM (Common), and NO (Normally Open). For boiler connection, the thermostat's NC or NO terminal is connected to the boiler's control circuit, with COM connected to the other side of the boiler's control circuit. The boiler itself is shown with a flame symbol ? and earth ground connection ?.
OpenTherm Connection Scheme: This scheme illustrates the RT520 thermostat connected via OpenTherm. The thermostat is powered by 2 x AA batteries (3V). It has terminals labeled A and B for OpenTherm communication. The boiler is shown with a flame symbol ? and earth ground connection ?.
AC 230V Connection Scheme: This scheme details the wiring for a system with AC 230V power. The AC 230V supply (L and N) connects through a fuse (MAX 3 (1) A) to the RT520 thermostat. The thermostat is powered by 2 x AA batteries (3V) and has NC, COM, and NO terminals. The COM and NO terminals are connected to control a pump (represented by a circular arrow symbol ▶️) and a motor (represented by 'M' in a circle), which are also connected to the AC 230V supply and earth ground ?. The connection to the boiler is indicated as 'BOILER CONNECTION*' and to OpenTherm as 'OPENTHERM*'.
