1. System Controller Capacity

Different compatible VRF series can be connected to the separate supported VRF networks. The manufacturer specifies restrictions on which generations can coexist on an individual network. Confirm series compatibility before combining existing and new equipment.

2. How the System Controller Works

The UTY-APGXZ1 uses two separate software components:

System Connection Architecture

Simplified functional architecture based on the manufacturer's system diagram. Refer to Chapter 5, page 05-16 for the complete network illustration.

Local and Remote Operation

The VRF Controller and VRF Explorer can run on the same computer or on separate computers connected through a network.

• On-site: VRF Controller communicates with the connected VRF networks. VRF Explorer can run on the same PC for local operation.
• Remote: VRF Explorer can connect to the site controller over a suitable LAN or Internet connection.
• Multiple buildings: Operators may connect to different sites from a central monitoring location, subject to the documented connection limits.
• Remote access restrictions: Certain functions, including equipment registration and input/output configuration, are not available from remote Explorer clients.

3. Required Hardware and Software

PC Requirements in the Technical Manual

Current installation note: These are the legacy software requirements published in the V-IV technical manual. Before a new installation or PC replacement, confirm current Windows compatibility, installation software and licensing requirements with GENERAL Technical Support. Do not assume an operating system is supported simply because it is newer.

4. Available Control Functions

Individual Indoor Unit Control

• Start and stop operation.
• Select operating mode.
• Adjust temperature setpoint.
• Adjust supported fan speed and airflow direction.
• Enable supported economy functions.
• Set temperature upper and lower limits.
• Set remote controller operation restrictions.
• Reset filter notifications.
• Access supported human sensing functions.

Group and Building Control

• Create groups for sites, buildings and floors.
• Manage up to 1,600 groups.
• Organise groups across three hierarchical levels.
• Apply commands across selected groups of indoor units.
• Display indoor units using list, tree and graphical layouts.
• Use 2D site/floor and 3D building layouts.
• Save and reuse operation patterns.

5. Scheduling Functions

The UTY-APGXZ1 provides annual scheduling for building operation, allowing equipment to be managed according to the required occupancy patterns.

Supported schedule functions include:

• Week-of-year scheduling.
• Day-of-month scheduling.
• Day-of-week scheduling.
• Holiday and special-day schedules.
• Scheduled operation and associated control settings.
• Weekly low-noise scheduling for compatible outdoor units.

6. Fault Monitoring and Operating History

The System Controller provides centralised fault reporting and system monitoring to assist technicians and building managers.

Room temperature monitoring requires the applicable wired controller and indoor-unit temperature detection settings, as specified in the manual.

7. Optional Energy Management Functions

The UTY-APGXZ1 can be expanded using optional software.

The manufacturer's specification identifies optional energy functions including indoor-unit lead/lag, outdoor-unit capacity limitation, peak-cut control and power consumption monitoring.

8. Installation and Commissioning Overview

The following is a general commissioning workflow. Use the dedicated UTY-APGXZ1 installation and software manuals for detailed installation, registration and configuration procedures.

1. Confirm compatibility: Verify the VRF series, network configuration, indoor-unit count and required optional software.
2. Prepare the PC: Verify that the selected computer and operating system are compatible with the System Controller software.
3. Install network interfaces: Provide an Echelon U10 USB Network Interface for each VRF network being connected.
4. Install software: Install the manufacturer's VRF Controller and VRF Explorer software.
5. Connect the security key: Insert the required WHITE-USB-KEY into the site controller PC.
6. Connect the VRF network: Follow the manufacturer's interface wiring and VRF transmission-network requirements.
7. Register equipment: Configure the connected VRF networks and register the indoor and outdoor equipment using the approved software procedure.
8. Configure site layout: Organise the equipment into buildings, floors and groups.
9. Set operating controls: Configure required control permissions, schedules and fault notifications.
10. Verify operation: Confirm that the equipment responds correctly to supported control commands and that faults and status are reported accurately.
11. Configure remote access: Where required, establish authorised remote Explorer connections.
12. Record configuration: Retain site configuration records, software versions, settings and backup information.

9. Troubleshooting

10. Information Required for Technical Support

When escalating a System Controller issue, please provide:

• System Controller model: UTY-APGXZ1.
• Installed software version and operating system.
• Number of VRF networks and connected indoor units.
• Outdoor-unit models and system configuration.
• Details of the Echelon U10 USB interfaces.
• Confirmation that the WHITE-USB-KEY is connected and recognised.
• Description of the issue and when it first occurred.
• Screenshots of software errors, missing equipment or abnormal status.
• Any recent changes to the PC, operating system, network or controller software.

GENERAL AIRSTAGE | Technical information for qualified installers, service technicians and building management personnel.