SALUS RT520RF Boiler Plus Compliant Thermostat Quick Guide

SALUS RT520RF Boiler Plus Compliant Thermostat

Introduction

The RT520 and RT520RF are the latest additions to SALUS’ tried and tested RT range of thermostat heating controls. With a new onboard load compensation feature, they offer the most cost-effectively compliant Boiler Plus solution on the market providing the homeowner with optimum efficiency and maximum heating control comfort. Available in both wired and wireless RF versions, the new RT520 series 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.
Before use please read this manual carefully.

Product Compliance

This product complies with the essential requirements and other relevant provisions of the following EU Directives:
EMC 2014/30/EU, LVD 2014/35/EU, RED 2014/53/EU and RoHS 2011/65/EU. Full text of the EU Declaration of Conformity is available on www.saluslegal.com

Safety Information

Use in accordance to national and EU regulations. Use the device as intended, keeping it in dry condition. Product for indoor use only. Installation must be carried out by a qualified person in accordance to national and EU regulations.

Always ensure the AC mains power is switched off before installing or working on any components (this includes replacing the batteries). Use only AA 1.5 V alkaline batteries in the thermostat. Place the batteries into the battery slot located in the back of the thermostat. Do not use rechargeable batteries.

Technical Specification

	RT520 Thermostat	RT520TX Thermostat
Thermostat supply	2 x AA alkaline batteries	2 x AA alkaline batteries
Thermostat rating max	3 (1) A	–
OpenTherm terminals	A / B	–
Outputs	Voltage free NC / NO / COM terminals	–
Temperature range	5°C – 33.5°C	5°C – 33.5°C
Temperature accuracy	0.1°C or 0.5°C	0.1°C or 0.5°C
ErP control class	V	V
Radio frequency	–	868 MHz
Dimension [mm]	118 x 95 x 26 [mm]	118 x 95 x 26 [mm]

RXRT520 Receiver
Receiver supply	230 V AC
Receiver rating max	16 (5) A
OpenTherm terminals	A / B
Outputs	Voltage free NO / COM terminals
Radio frequency	868 MHz
Dimension [mm]	96 x 96 x 26 [mm]

Button Functions

1. MENU – enter the menu options, press and hold for 3 sec to return to main screen or to deactivate Boost Mode
2. SELECT – confirm changes and enter menus
3. DOWN – decrease the temperature and move through the menus
4. UP – increase the temperature and move through menus
5. BOOST – activate Boost Mode
6. MANUAL – activate / deactivate Manual Mode
7. ON – When in Manual Mode, ON will turn the boiler on.
8. OFF – When in Manual Mode, OFF will turn the boiler off.
9. AUTO – The receiver operates in automatic mode according to the thermostat.
10. MANUAL – Receiver output is controlled by the On/Off slide switch.

LCD Icon Description

1. Text Bar
2. AM / PM
3. Day of the week (numeric)
   Day of the week (alphabetic)
4. Holiday Mode On
5. Temperature Unit
6. Frost Protection Mode On
7. Manual Mode On
8. Clock
9. Heating Mode On
10. Wireless connection with the receiver
11. Program number
12. Program indicator
13. Low battery status
14. Temperature measured / set
15. Service Mode On
16. Settings
17. Boost function

RT520 Thermostat Terminals Description

Terminal	Description
B / A	OpenTherm Communication Wire
NC	Switched Live OFF
NO	Switched Live ON
COM	Common Terminal

RXRT520 Receiver Terminals Description

Terminal	Description
B / A	OpenTherm Communication Wire
NO	Switch Terminal
COM	Common Switch Terminal
L; N	Supply (230 V AC)

RT520 Wiring Diagram

RT520TX Wiring Diagram

OpenTherm Power Up and Configuration

OpenTherm Modulating Control is a method of control used by modern heating systems. Instead of switching a boiler on and off at intervals, modulating control allows the amount of heat provided by the boiler to be controlled to match the varying demand from the thermostat. This means the customer has greater system efficiency, energy saving, and room comfort from our heating controls.

Please make the receiver connections and power the receiver before inserting the batteries into the thermostat.

OpenTherm – Hot Water

Standard Power Up and Configuration

1. Please follow steps 1 to 14 from section OpenTherm Power Up and Configuration.
2. TPI (Time Proportional & Integral) is a self-learning, timeproportional algorithm. TPI type of regulation ensures economical system operation through more accurate temperature maintenance during controlling process and limits overload conditions. In addition to the exact and stable room temperature, the advantage of this system is the minimization of energy consumption and significant savings. RT520 offers 3 types of TPI control: 1. for radiator (6CPH); 2. for underfloor heating (3CPH); 3. for electric heating (9CPH).
   Optimum Stop calculates how long the house will take to cool down, then turns off the boiler at the earliest possible moment, this means the system is not running when it’s not actually necessary. If there is a sudden heat loss during this period, then Optimum Stop will be overridden to regain comfort conditions.

Programming – Automatic Mode

In this mode, user can set the schedules for the thermostat (temperature setpoints for specific periods of time). Programmed schedules should use all time periods.

Repeat the process for all time periods.

Landlord Settings

Landlord settings is a pin code-protected feature that allows the landlord to set a service reminder on the thermostat that will warn the tenant when the boiler is due its annual service. Once service mode has become active, the device will lock the set point temperature as set by the installer/landlord. To unlock this device, the landlord needs to be contacted and the boiler serviced.

RT520TX Thermostat Pairing with the Receiver

If you are using the RT520RF pack, the pairing between the thermostat and the receiver is already done.
If you bought the RT520TX and RXRT520 separately or if you want to re-pair thermostat with the receiver, make sure that the device is disconnected from the power supply and the switches on the receiver have been set to AUTO and ON. Then connect the receiver to the power supply and wait for the red LED to light steadily. Then switch to the OFF position and again to ON position quickly. The red flashing LED will confirm entering the pairing mode.

Test the Pairing Process

Factory Reset

Landlord settings will not be reset.

SALUS Controls plc SALUS House Dodworth Business Park South, Whinby Road, Dodworth, Barnsley S75 3SP, UK.
T: +44 (0) 1226 323961
E: sales@salus-tech.com
E: techsupport@salus-tech.com
SALUS Controls is a member of the Computime Group.
Maintaining a policy of continuous product development SALUS Controls plc reserves the right to change the specification, design, and materials of products listed in this brochure without prior notice.
www.salus-tech.com
Issue Date: September 2018

REFERENCE:

Download Manual:

SALUS RT520RF Boiler Plus Compliant Thermostat Quick Guide

OTHER MANUALS:

SALUS RT520RF Boiler Plus Compliant Thermostat User Manual

SALUS RT520RF Boiler Plus Compliant Thermostat Product Information Guide

SALUS RT520RF Boiler Plus Compliant Thermostat Specification Sheet

SALUS RT520RF Boiler Plus Compliant Thermostat Quick Guide