HEATIT 54 304 59 DIN Smart Thermostat Installation Guide

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1. INTRODUCTION  

HEATIT  

PRODUCT  

DOCUMENTS  

Heatit DIN Smart Thermostat is an electronic thermostat  

designed for electrical heatingand cooling. The thermostat can  

be controlled via Z-Wave^® via a Z-Wave gateway. It can also be  

controlled by Wi-Fi using the MyHeatit app, or via Modbus 485  

and the buttons on the front of the thermostat. The thermostat  

has a user friendly interface.  

DIN SMART  

THERMOSTAT  

Z-Wave Installers manual  

Firmware version  

Document version  

FW 1.0  

Article no.  

Ver-A  

Document date  

54 304 59  

01.03.2025  

Org. doc. date 01.03.2025  

The Heatit DIN Smart Thermostat is a versatile solution for  

both residential and industrial use. It functions as a standard  

floor heating thermostat, offering simple temperature control  

with three modes: Heat, Cool, and Eco. Additionally, it features  

a specially designed industrial function (INDU) that allows  

it to handle setpoints ranging from -30°C to 85°C, making  

it ideal for demanding industrial applications. It can also  

be used as a plus/minus snow melting thermostat (PLUS),  

adjusting temperatures for efficient snow and ice melting on  

outdoor areas, driveways, or stairs. With the Heatit DIN Smart  

Thermostat, you get precise temperature control for a wide  

range of purposes.  

Heatit DIN Smart Thermostat  

54 304 59  

The thermostat clicks easily on a standard DIN rail and can  

be installed in the main switchboard. The thermostat has  

connection for two external temperature sensors.  

TABLE OF CONTENTS  

1. Introduction  

22. Display on/off  

While used on Wi-Fi, the thermostat can communicate over  

a local API, where the user can make integration with a local  

gateway, server, controller that offers such a service, without  

needing connecting it to the cloud. The device also supports  

Amazon Alexa and Google Home (Amazon Alexa and Google  

Home are pending).  

2. Statement regarding  

products from multiple  

manufacturers  

23. Display icons  

24. Child lock  

25. Open window detection  

26. Modbus  

3. Behavior within the  

Z-Wave network  

27. Firmware update - OTA  

28. Error codes  

4. Installation Disclaimer  

5. Quick Start  

29. Safety features  

30. QR-Code Placement  

31. Security  

To see more information regarding the functionality for the  

Wi-Fi version, see the Wi-Fi manual of the product.  

6. Connections  

7. Installation  

8. Add/Remove  

32. Node Information Frame  

33. Associations  

Heatit DIN Smart Thermostat has active power metering  

and it gives you real time information about your power  

consumption. It also allows you to set the power metering  

value manually in case of connection with a contactor.  

9. Factory Reset  

10. Startup  

34. Association Groups  

35. Configuration Parameters  

36. Command Classes  

37. Supported Command  

Classes  

11. Principles of regulation  

12. Local settings menu  

13. Display Menu structure  

14. Standby and main screen  

15. Temperature shown in  

display  

The device has implemented ZeroX™ technology. This  

technology makes sure the relay switches at 0V when turning  

on and off. With this technology the thermostat will have a  

much longer lifetime.  

38. Controlled Command  

Classes  

16. KWh value in menu  

17. Size of load  

39. Thermostat dimensions  

40. Thermostat controls  

41. Chart - Display menu  

Structure  

Heatit DIN Smart Thermostat has been developed for central  

controlling systems and all the features are easily accessible  

over MODBUS 485.  

18. Choice of sensor  

19. Selecting sensor value  

20. Calibration  

Product info  

21. Brightness  

The thermostat can withstand a load of max 16A/3600W at  

230VAC. We recommend a contactor for loads above 13A.  

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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• HEATIT

HEATIT 54 304 59 DIN Smart Thermostat Installation Guide Overview

Summary of Contents

• Page 1: Introduction Heatit DIN Smart Thermostat is an electronic thermostat designed for electrical heating and cooling. The thermostat can be controlled via Z-Wave, Wi-Fi using the MyHeatit app, or Modbus 485. It has a user-friendly interface and functions as a standard floor heating thermostat. The thermostat offers three modes: Heat, Cool, and Eco. It features an industrial function that allows it to handle setpoints ranging from -30°C to 85°C. The thermostat can also be used as a snow melting thermostat, adjusting temperatures for efficient snow and ice melting. It clicks easily on a standard DIN rail and can be installed in the main switchboard. The thermostat has connection for two external temperature sensors. It has active power metering and provides real-time information about power consumption. The device has implemented ZeroX™ technology, ensuring longer relay switch lifetime.
• Page 2: Statement regarding products from multiple manufacturers emphasizes compatibility with Z-Wave Plus certified devices from any manufacturer. The device must be added to an existing Z-Wave network to communicate with other devices. Installation must be performed by a qualified electrician following national building codes. Power to the device must be disconnected at all times during installation. Quick start instructions include switching off mains voltage and fastening the device onto the DIN rail. Connections must be verified before switching on the mains voltage. The primary controller/gateway must be set in add mode for device integration. Max tightening torque for terminal screws is 2Nm. The primary controller/gateway has a mode for adding or removing devices. External sensor specifications include NTC type with various resistance values.
• Page 3: Startup process involves selecting the protocol and sensor mode after powering up the device for the first time. The thermostat regulates temperature using readings from external wired sensors and can operate using hysteresis or PWM based on the setpoint temperature. Adding the device to a Z-Wave network can be done through standard (manual) or SmartStart (automatic) methods. Hysteresis allows the thermostat to turn the load on and off based on a set hysteresis value, adjustable between 0.3°C and 3.0°C. Pulse-width modulation (PWM) regulates the thermostat based on duty cycles, turning the device on and off in percentage intervals. The local settings menu can be accessed by holding the Center button for 5 seconds, allowing navigation through various options. Factory reset can be initiated through the settings menu or by holding specific buttons for a designated time. The standby screen displays the setpoint temperature when the thermostat is not in use. The device will indicate when a factory reset is in progress and confirm completion with a display message. SmartStart products can be added to a Z-Wave network automatically by scanning a QR code if supported by the primary controller.
• Page 4: Temperature shown in display is the setpoint by default. This can be altered with Parameter 12: “Temperature display”. Brightness of the display can be changed using menu choices “BR1” and “BR2”. The device supports power metering to provide insight into power consumption through the “kWh” menu option. The thermostat has a display ON/OFF function that can be enabled or disabled by holding the Left and Center buttons for 10 seconds. The load value can be set manually in the “load” menu or from Parameter 26, adjustable in 100W increments up to 9900W. The thermostat has multiple sensors and sensor modes that can be configured from the local settings menu or via Parameter 2. Child lock function disables buttons from the display locally, showing “LOCK” when enabled. Open Window Detection (OWD) reduces the thermostat setpoint upon detecting an open window, activating when a rapid temperature drop is registered. The thermostat allows selection of different resistance values of an NTC sensor via the local settings menu or Parameter 3. Temperature readings can be calibrated using Parameters 8 and 9, with adjustments displayed in the controller/gateway.
• Page 5: The default value for baud rate is 38.4 kbps, which can be changed through the menu option BAUD. The QR-Code is needed when including a device using S2 security or SmartStart. An OTA (Over-The-Air) update on Z-Wave products allows devices to be updated wirelessly, depending on the primary controller/gateway used. S2 security enhances Z-Wave Plus with an additional layer of AES 128-bit encryption to prevent hacking and man-in-middle attacks. The node information frame is the business card of a Z-Wave device, containing information about the device type and technical features. The device has safety features to ensure safe operation and warn the user of any faults or unexpected behavior. Z-Wave devices interact with other Z-Wave devices through associations, which maintain a list of devices that will receive controlling commands. The device features internal temperature sensors that detect overheating and will turn off the relay to prevent damage. The device has a 16A overload protection that is triggered if there is a current draw of more than 16A. The thermostat has support for the Multi Channel Command Class, allowing it to be perceived as multiple devices by the primary controller/gateway.
• Page 6: Association groups without multi-channel support include a description of value and name for each group. The lifeline group is used by the primary controller to send various reports including thermostat mode, setpoint, operating state, and protection reports. Buttons on the front of the device can be enabled or disabled through parameters or locally by holding specific buttons. The thermostat setpoint set commands allow for use as a master thermostat, sending commands based on its own setpoint. The external sensor can decide the highest and lowest temperature limits when using sensor modes. The configuration parameters detail the functionality of Z-Wave products and their ability to work out of the box after inclusion. Heating, cooling, and ECO mode setpoints can be set within a range of 2°C to 40°C. The temperature report interval can be set between 30 to 65535 seconds. The hysteresis for temperature reporting determines the change in temperature required to send a report. The device can react to overload or overheating features, with options for error handling and recovery attempts.
• Page 7: This will unlock the thermostat until it goes back to standby, requiring you to unlock it again. Set the % of time the relay should be active when using PWER mode. Protection State to 0x02 means that no operation is possible and the thermostat can only be unlocked by setting Parameter 1 to 0. Set the time interval of how often the device updates Thermostat Setpoint set, Thermostat Mode set and Binary set to associated devices. Thermostat Setpoint is implemented with 3 setpoints, Heating, Cooling and ECO. It is possible to change the operating mode of the thermostat by sending a Thermostat Mode set command. The thermostat reports the operating state of the internal relay using this Command Class. The device supports the Indicator Command Class which will flash the display. Binary Switch commands are used to control external relays. Protection Command Class allows you to disable local control of the thermostat.
• Page 8: Supported command classes include S0, S2 authenticated security, and S2 unauthenticated security. The device supports various command classes such as association, firmware update, and security. Thermostat controls allow for increasing or decreasing set temperature. The device features multiple association groups and notifications. Thermostat modes and operating states are included in the command classes. Dimensions of the thermostat are specified as 51mm and 58mm. The document lists various versions of command classes supported by the device. Firmware updates and device reset notifications are part of the functionality. The device includes a transport service and supervision capabilities. Basic notification and meter functionalities are also supported.
• Page 9: Hold the middle button for 5 seconds to enter menu. TDS: Temperature displayed in standby mode. SETT: Setpoint temperature. RELT: Real time temperature for 2 seconds.
• Page 10: Page 10
• Page 11: Hold the middle button to set HYST value, from 0.3-3.0. Load value from 100-9900W, by increments of 100. Hold to reset the Kwh. Slave ID used for Modbus.
• Page 12: Error messages in display Internal error: MCU and Z-Wave chip communication failed Radio error Floor sensor error External sensor error The product must be used with a security-enabled Z-Wave controller in order to fully utilize security/encryption. Overheat Overload The device is maintenance-free. Indoor use only. Do not dispose of electrical appliances as unsorted municipal waste, use separate collection facilities.