DEVIreg Hotwater DIN Rail
Programmable Controller
User Guide

Installation and User Guide
DEVIreg™ Hotwater
DIN-rail programmable controller for Hotwater maintenance

Introduction

DEVIreg™ Hotwater is a 4 channel electronic programmable controller. 3 additional chancels are not used in this constellation. The device is DIN-rail mountable and is used for control of Devi Hot watt cables. Every channel (4) can be  individually set up, this will allow for 4 different temperatures and disinfection schedules.
Universal analog channels’ inputs can be selected via software between 7 types of temperature sensors including NTC 15 kOhm at 25 °C. The controller has a LCD display, Modbus RS-485 serial interface and 110/230 V AC power supply.  Voltage to sensors is SELV.
DEVIreg™ Hotwater has 8 control relays – 2 sets of max. 10 A and 6 sets of max. 6 A; For this specific application 2, 10A and 2, 6A relays are used. Relay control functions can be set to Hot-water maintenance and legionella control of a  hot-water system by use of applicable heating cables. Additionally, relay contacts are not connected to a voltage source inside the controller, and can be used for control systems with any voltage up to 250 V AC.
Hardware of DEVIreg™ Hotwater is based on the Danfoss controller type MCX08M2, art. no. 080G0307, but is customized with special software.
The product complies with the EN/IEC Standard “Automatic electrical controls for household and similar use”:
• EN/IEC 60730-1 (general)
• EN/IEC 60730-2-9 (thermostat)
More information on this product can also be found at: devi.com
Connection scheme DEVIreg™ Hotwater

Safety Instructions

Make sure the mains supply to the controller is turned off before installation.
Please also note the following:

• The installation of the controller must be done by an authorized and qualified installer according to local regulations.
• The controller must be connected to a power supply via an all-pole disconnection switch.
• Always connect the controller to continuous power supply.
• Do not expose the controller to moisture, water, dust and excessive heat.

Note: Product is designed for Over Voltage Category II. When used, installation must be equipped with transient protection.

Mounting Instructions

Please observe the following placement guidelines:
Install the thermostat in an electric cabinet with DIN rail attachment or a separate DIN attachment according to local regulation on IP classes.
Do not place the thermostat in a way that will expose the controller to direct sunlight.
Follow the steps below to mount the thermostat:

1. Click the thermostat on the DIN rail attachment.
2. Connect the thermostat according to the connection diagram, see page 4.
3. The screen of the heating cable must be connected to the earth conductor of the power supply cable by using a separate connector.
4. Turn on the power supply.

Note: Always install the sensors at assumed hottest and coldest locations on the respective pipe, and in direct contact with the pipe (2 sensors pr. heating circuit)

User Manual

4.1 General use
The DEVIreg™ Hotwater is operated via 6 physical buttons to the right of the LCD-display.
Buttons
The functions of the 4 operated buttons are:

Up, Down		Shows additional information
Left, Right		Next menu entry / next line / next setting parameter
Escape		Escape return to previous level of menu / show Alarm screen
Enter		Confirm / select / go to the Main menu

Display
The DEVIreg™ Hotwater can simultaneously control up to 4 different systems. These 4 systems are referred as H1, H2, H3 and H4 (short for Heater).
The DEVIreg™ Hotwater provides the user with an opportunity to view the current status of the all systems. This status is always shown on the main screen.
Main Screen view (default)

The Main Screen is the main window appearing when the controller is powered. This screen displays an overview of data from the different heaters. (H1-H4) by pressing the and more detailed information can be obtained from the respective heaters sub screen. This view provides the user with an overview of all systems, however with limited information.

Heater sub-screen view
These screens give to user quick and more detailed information about settings and status of each heater.

Just press button on the Main Screen of con troller and H1 data will appear, press again – and you’ll see H2 data, and so on. To progress reversely through this menu please use .
To exit from sub-screens view and return to the Main Screen – press 1 time.
Setup wizard
On the first power on of the device, the device will ask to run the wizard to do this pressPress once more to proceed into the setup.The device will ask for the amount heaters use to select and to accept. 

The device will now ask for the details of each heater in the following pattern
– Pipe material
– Sensor type
– Temperature setpoint
– Enable disinfection

All mentioned can be selected with and accepted by.If multiple heaters are entered, this exact procedure will repeat till all information is filled for all heaters.

The final step in the wizard is the RTC (Real Time Clock) press
Navigate with or select with Manipulate with accept with or return with Once time and date are set confirm with
First start-up
Ensure everything is correctly connected and securely fixed.
Please check this now.

Once verified press and hold (approx. 3-5 sec.) to turn on the device.
The device will now commence normal operation.
Sub-menu Alarm
The structure in this Sub-menu is navigated like the main menu.Active alarms: display of the currently active alarms and is to navigate like Alarm view. Having an active alarm will activate alarm relay. Alarms will be retained till reset has been performed.
Reset Alarms: Reset all alarms by pressing
Log history: display previous alarms in a list with date and timestamp. This is navigated like Alarm view.
Clear log history: clears the log history permanently by pressing.
Sub-menu Service
The structure in this Sub-menu is navigated like the main menu.System: contains a system submenu for professional users containing (Yxx) parameters.
Additionally this menu should under normal circumstances not be used.
This menu will change according to the user level password entered in Login.
Relay counters:
Displays the number of relay ON/OFF switching’s performed by each relay.
Software info:
Displays the installed software version.
Device info:
Displays serial number, product code and BIOS version
RTC setup:
Setup of the real time clock, this is to navigate like explained in setup wizard step RTC.
Login:
Enables a password to be input and is to be navigated with and select with
Configuration:
Contains buzzer activation time, delay for alarm activation and alarm state when device is OFF.
Serial settings:
Contains Modbus/CAN serial address, Modbus serial baudrate and Modbus serial settings
Language:
The structure in this Sub-menu is navigated like the main menu.
Contains the different language variants.
Function Setup Wizard
This function will reset the device into the Setup Wizard.Yes with or NO with

Sub-menu (H1-H4)
The structure in this Sub-menu is navigated like the main menu.
Sensor type:
to select correct type and to confirm.
Be aware that 2 sensors must be used for each heater circuit (H1-H4) and that these must be the same type.
-PT1000
-NTC16K (NTC16.8K)
-NTC100 (NTC100K)
-NTC2K
-NTC5K
-NTC10K
-NTC15K (Std. DEVI sensor)
Has no default value as this must be set in setup wizard. Please refer to the sensors maximum and minimum temperatures to ensure safe operation of the system.
Setpoint:
Settable with to select and to confirm.
Settable temperature setpoint (desired maintained temperature) between 20.0-80.0°C (20-60.0°C on plastic pipe).
Has no default value as this must be set in setup wizard.
Hysteresis:
Settable with to select and to confirm.
Settable between 1.0-10.0K
Defaults to 2.0K
High temperature:
Settable with to select and to confirm.
Settable between 20.0-90.0K
Defaults to Setpoint+Hysteresis+5K
Not settable below setpoint
Alarm delay:

Settable with to select and to confirm.
Temperature alarm delay
Settable between 10-240s
Defaults to 10s
Sensor weighting:

Settable with to select and to confirm.
Weighting the impact of the 2 sensors on the heater regulation.
0% means that the regulation is made on basis of sensor A only 100% meaning sensor B only, thus 50% is the mean between sensor A and B.
Settable between 0-100%
Defaults to 50%
Disinfection temp:

Settable with to select and to confirm.
Settable between 55-80.0°C
Defaults to 55°C
Pipe material:

Settable with to select and to confirm.
This parameter will have impact on the maximum settable temperatures.
Can be set to metal or plastic.
Has no default value as this must be set in setup wizard
Disinfection alarm temperature:

Settable with to select and to confirm.
This parameter will have impact on the alarm temperature for disinfection temperatures.
Defaults to 65°C
Maximum rising time:

Settable with to select and to confirm.
This parameter will have impact on when the alarm will be triggered due to, too low temperature (setpoint not reached).
Defaults to 120 minutes.
Sub-menu Disinfection schedule
The structure in this Sub-menu is navigated like the main menu.
(H1-H4) Schedule:

Press to go to next parameter and to cancel.
Settable with to select and to confirm.
Defaults to Sunday at 02:00.
(H1-H4) Manual start:
Starts the Disinfection procedure manually by pressing
Temperature time table:

Alarms view

By pressing button from Main Screen – screen(-s) with Alarm appears.
If more than 1 Alarm is happened – use navigation by going . Pressing button again leads from Alarm to Main Screen. Having an active alarm will activate alarm relay. Alarms will be retained till reset has been performed.

Main menu

By pressing from the Main Screen– screen Main Menu appears.

The menu system is navigated from Main Screen by the following sequence:
The main menu is navigated by and.
Pressing the the selected sub-menu will be shown. Pressing button you will be taken back to the previous menu step.
4.2 Language setting
DEVIreg™ Hotwater controller has different programmed languages located in Sub-menu Service under languages.
4.3 Date and Time settings
DEVIreg™ Hotwater controller has RTC (Real Time Clock) for fixing time of data logging information, for example Alarms.
NB: Battery back-up time is min. 48 hours.
4.4 BMS(Building Management System) settings
DEVIreg™ Hotwater controller has Modbus RS-485 opto-insulated serial interface.
Modbus RS-485 settings can be done by the following menu sequence:
Main Screen – Enter to Main Menu – Enter to Service – Enter to Serial settings
More detailed information is contained in the Appendix A.

Connection diagram

Connection scheme DEVIreg™ Hotwater

Technical Specifications

6.1 Technical data

6.2 Dimensions

Disposal Instruction

Appendix A. BMS and RS-485 interface

The controller has a built-in Modbus data transmission system and can be connected to the BMS central unit.
A1. Communication settings
Default communication settings:

• Serial address: 1.
• Serial baud rate (Transmission speed): 19200.
• Serial setting: 8N1.

A2. RS-485 specifications
MCX hardware network specifications (wiring, topology, etc.) can be found in Danfoss document:
User manual. Meet any HVAC requirement with the reliability of MCX network.
This document provides general indications for the setup of RS-485 networks.
A3. Modbus parameters and variables
Modbus parameters and variables for DEVIreg™ Hotwater controller.

Warranty

A 2-year product warranty is valid for:
• thermostats: DEVIreg™ Hotwater.
Should you, against all expectations, experience a problem with your DEVI product, you will find that Danfoss offers DEVI warranty valid from the date of purchase on the following conditions: During the warranty period Danfoss  shall offer a new comparable product or repair the product if the product is found to be faulty by reason of defective design, materials or workmanship. The repairer replacement. The decision to either repair or replace will be solely at  the discretion of Danfoss. Danfoss shall not be liable for any consequential or incidental damages including, but not limited to, damages to property or extra utility expenses. No extension of the warranty period following repairs undertaken  is granted.
The warranty shall be valid only if the WARRANTY CERTIFICATE is completed correctly and in accordance with the instructions, the fault is submitted to the installer or the seller without undue delay and proof of purchase is provided. Please note that the WARRANTY CERTIFICATE must be filled in, stamped and signed by the authorized installer performing the installation (Installation date must be indicated). After the installation is performed, store and keep the  WARRANTY CERTIFICATE and purchase documents (invoice, receipt or similar) during the whole warranty period.
DEVI warranty shall not cover any damage caused by incorrect conditions of use, incorrect installation or if installation has been carried out by non-authorized electricians. All work will be invoiced in full if Danfoss is required to inspect or repair faults that have arisen as a result of any of the above. The DEVIwarranty shall not extend to products which have not been paid in full. Danfoss will, at all times, provide a rapid and effective response to all complaints and inquiries from our customers.
The warranty explicitly excludes all claims exceeding the above conditions.
For full warranty text visit www.devi.com.devi.danfoss.com/en/warranty/
WARRANTY CERTIFICATE
The DEVIwarranty is granted to:

Address—————————————–
Stamp——————————————
Purchase date ——————————-
Serial number of the product—————
Product —————————————-
Art. No.—————————————-
*Connected output [W]———————-
Installation Date & Signature————–
Connection Date & Signature————-
*Not mandatory

Danfoss A/S
Nordborg Vej 81
6430 Nordborg, Syddanmark
Denmark

Danfoss A/S
DEVI • devi.com • +45 7488 2222 • EH@danfoss.com
Any information, including, but not limited to information on selection of product, its application or use, product design, weight, dimensions, capacity or any other technical data in product manuals, catalogues descriptions, advertisements, etc. and whether made available in writing, orally, electronically, online or via download, shall be considered informative, and is only binding if and to the extent, explicit reference is made in a quotation or order confirmation. Danfoss cannot accept any responsibility for possible errors in catalogues, brochures, videos and other material. Danfoss reserves the right to alter its products without notice. This also applies to products ordered but not delivered provided that such alterations can be made without changes to form, fit or function of the product. All trademarks in this material are property of Danfoss A/S or Danfoss group companies. Danfoss and the Danfoss logo are trademarks of Danfoss A/S. All rights reserved.

8097137 & AN377831097153en-010103
Produced by Danfoss © 03/2024

Documents / Resources

Danfoss DEVIreg Hotwater DIN Rail Programmable Controller [pdf] User Guide DEVIreg Hotwater DIN Rail Programmable Controller, DEVIreg Hotwater, DIN Rail Programmable Controller, Rail Programmable Controller, Programmable Controller, Controller

References

• User Manual