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DIP Switch Configuration

Controller Overview

This section describes steps required to properly configure the controller with the universal FCU application. For further information, please see the RAC18-IP Software and Hardware user manuals.

RAC18-IP controller

The S3 DIP switch is responsible for configuring the application.

The configuration of the RAC18-IP controller with the universal FCU application is described step by step in the section of the manual:

Step 1: selecting the FCU pipe type;

Step 2: selecting 1 or 2 stages of heating;

Step 3: selecting 1 or 2 stages of cooling;

Step 4: selecting the type of control the FCU valves require, and heating and cooling actuators connection details;

Step 5: selecting the temperature control value source;

Step 6: selecting the type of fan used within the project.

Steps 1-6 describe configuration of the S3 DIP switch. Their overview with default positioning is presented in the table below.

No.

Name

On

Off

Default

1

Pipe mode

2-pipe

4-pipe

4-pipe

2

Heating 2nd stage

Enable

Disable

Disable

3

Cooling 2nd stage

Enable

Disable

Disable

4

Heating/cooling control mode

Analog

Digital

Digital

The S3 DIP switch configuration

WARNING! Before attempting to configure the controller, make sure to have acquainted with all the required documentation, or have a good knowledge of the fan coil unit application–this will make configuration of the controller easy and trouble-free.


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