Danfoss ECL Comfort A315 Service Guide

© Danfoss |2017.06
VI.LV.H1.02 | 1
ECL Comfort 296 / 310 controllers
Modbus networking guide
Service Guide
1.0 Contents
1.0 Contents... . ................................................................................................................................................................................................................................................1
2.0 Introduction .............................................................................................................................................................................................................................................2
3.0 Conclusion ... .............................................................................................................................................................................................................................................2
4.0 Modbus network denitions .............................................................................................................................................................................................................3
4.1 Multipoint serial bus infrastructure .......................................................................................................................................................................................3
5.0 ECL 296 / 310 Modbus network specication .............................................................................................................................................................................4
6.0 Installation class and surge / lightning protection ....................................................................................................................................................................5
7.0 Annexure A: Modbus network wiring guidelines ...................................................................................................................................................................... 6
7.1 Central heating station ................................................................................................................................................................................................................7
7.2 Repeater stations (individual houses with repeater) ....................................................................................................................................................... 8
7.3 Individual houses (without repeater) ....................................................................................................................................................................................9
8.0 Annexure B ............................................................................................................................................................................................................................................ 10
8.1 Selection of parts ........................................................................................................................................................................................................................10
8.2 Surge protector wiring..............................................................................................................................................................................................................11
8.3 “Modbus” to “mains” separation ...........................................................................................................................................................................................12

Danfoss ECL Comfort A315 Specifications

General

Protection Class	IP20
Application	Heating systems, Cooling systems
Power Supply	24 V AC
Relay Outputs	3
Analog Inputs	Up to 4
Communication	Modbus RTU
Display Type	LCD
Inputs	Digital and analog inputs
Outputs	Relay and triac outputs
Operating Temperature	0 to 50 °C
Storage Temperature	-20 to +60 °C
Relative Humidity	5 to 95 % RH, non-condensing