Dometic VARC 72 - User Manual

VARC Chiller Control
Operations Manual
Dometic Group Marine Division
Rev. 20170511
L-3499 English
P/N 338208
COPYRIGHT © 2011-2017 Dometic Group Marine Division. All Rights Reserved.
No part of this publication may be reproduced, translated, stored in a retrieval system, or transmitted in any form or by any means
electronic, mechanical, photocopying, recording or otherwise without prior written consent by Dometic Corporation. Every
precaution has been taken in the preparation of this manual to insure its accuracy. However, Dometic Corporation assumes no
responsibility for errors and omission. Neither is any liability assumed for damages resulting from the use of this product and
information contained herein.

Summary

Introduction to VARC Chiller Control

Touchscreen Navigation Overview

Explains the main screen icons and navigation for the touchscreen interface.

General System Information

Analog Inputs and Temperature Monitoring

Details analog inputs, temperature sensors, and setpoint adjustments.

Setpoints and Operational Modes

Setpoint Configuration (Cooling;Heating)

Details how to configure cooling and heating setpoints.

Pump Operation Details

Cooling and Heating Mode Details

Describes system operation in cooling and heating modes.

Status Screen Navigation

Main Menu Navigation Tree

Menu B: Setpoints and Limits

Access to heating/cooling setpoints, current limiting, and units.

Electrical Specifications

Appendix I: Touchscreen Navigation

Main Page & Chiller Enable

Navigating the main touchscreen page and enabling chiller operation.

Chiller Setpoints & Summary

Chiller Summary Screen Details

Detailed view of individual chiller stage parameters and status.

Chiller Stage Operation

Maintenance Mode Access

Instructions for accessing and enabling maintenance mode.

Electronic Expansion Valve (EEV) Monitoring

Trends Monitoring and Data Export

Alarm Management and History

Active Alarms Display

Display of current system alarms and their status.

Alarm History Log

Accessing and reviewing the chronological record of system alarms.

Alarm Help and Troubleshooting

Remote Support & Enable Configuration

Remote Support Setup

Steps to enable remote support and view IP address.

Remote Enable Functionality

Configuring remote login settings like autostart and silent startup.

Remote Configuration Options

Appendix II: Display Navigation Tree

Main Status Screen Parameters

Details of parameters displayed on the main status screen.

Program Configuration Menu

Factory Settings: Compressor & Alarms

Compressor Configuration

EVO Configuration & Regulation

EVO Configuration Parameters

Specific settings for valve regulation, PID, and custom configurations.

Regulation Parameter Details

Details on regulation parameters like output frequency and speed control.

Power + n1 Configuration

Power + n1 Settings

Detailed settings for motor type, control mode, and parameters.

Power + n1 Regulation Details

EEV Pre-opening Settings

I;O Configurations: Inputs & Outputs

Appendix III: Multistage Setup

Initial Wiring & Connections

Basic Wiring Diagram

Firmware Compatibility Check

Networking Setup (1 of 3)

Networking Setup (2 of 3)

Networking Setup (3 of 3)

Appendix IV: Configuration & Setup

Setting Time and Date

Enabling Electric Heat

Selecting Unit of Temperature

HMI Setup: Uploading Program

Deleting Old Program: Project Manager

Screen Settings: Address, Time, Backlight

7 Touch Screen Connection

Activating Maintenance Mode

Enabling via PGD1 Display

Activating Maintenance via Touchscreen

Chiller Summary for Maintenance

Accessing maintenance mode via the Chiller Summary screen.

Maintenance Mode Settings

Appendix V: Alarm Table

Appendix VI: Default Parameters

Default Parameter Tables

Detailed default parameter values for different VARC models.

Appendix VII: I;O Table & Wiring Diagram

VARC Standard Wiring Diagram

Dometic VARC 72 Specifications

General

Brand	Dometic
Model	VARC 72
Category	Chiller
Language	English