Products | Zone-All Controls

VVT System

Starzone 4000

The Starzone 4000 system is the premier VVT system that has evolved from the accumulation of the experience and knowledge Zone All Controls has acquired in manufacturing easy to use packaged VVT temperature control systems since 1987.

Unlike conventional DDC systems, the Starzone 4000 is a packaged system, meaning it is pecifically designed for its intended use. This make the system less costly, easier to install and wire, easier to operate, does not require complicated programming, and the operating system has more depth and features than a conventional DDC system.

The Starzone 4000 system begins with the Master control panel. Designed to control 2 stage heat/cool AHU's, the Master control panels can be interfaced to a common communication bus back to our Starcom Building Software. The entire system can then be accessed over the internet. Through the software we provide unlimited FREE technical support for the life of the system. Individual zones and AHU's can be trend logged, several test modes allow for easy problem diagnose, and the systems operation can be tailored to the building by locking out thermostat set points, establishing maximum and minimum damper position, and much more.

In addition to the main AHU's the thermostats can incorporate auxiliary heating devices such as electric, or hot water baseboards, and duct heaters.

Zone dampers can be added to individual zones, or the entire system can be expanded to a full VVT control system with the addition of a by-pass damper.

Up to 32 Zones Packaged VVT No Programming

Brochure.pdf ZA4000 Manual.pdf

Master Controller

SZM-4000 Master

The heart of the Starzone 4000 system is the Starzone Master Controller. The SZM-4000 Master controller interfaces to the air handling unit (AHU) through a series of industry standard isolation relays. Each AHU that is to be zoned will have its own SZM-4000 Master panel. Each panel can operate independently, or be networked together back to a central PC.

Features an intuitive LCD interface with simple menu navigation — no laptop or specialised tools required for setup or diagnostics.

✓ Controls the temperature of up to 32 zones.

✓ Controls heat/cooling/fan modes of 2 stage HVAC units.

✓ The Master panel has contacts for change-over valves, allowing the controller to interface to heat pump units.

✓ Perimeter radiation, or duct heaters are controlled directly by each zone thermostat.

✓ Starzone Building Software allows the user to view set-point, ambient, outside, and discharge air temperatures. The user can over-ride thermostat set points, set damper max/min. positions, set Master controllers and thermostats to heat only, or cool only operation.

✓ The Starcom software can perform trend logging, reports, problem scanning and much more, but is simple enough to allow building owners to adjust settings and verify system operation.

LCD Interface RTU Communication Built-in Diagnostics

SZM-4000 Manual.pdf

Zone Thermostats

SZT-4000 Thermostats

The Starzone 4000 thermostat is a fully programmable micro-processor based thermostat with several features. It offers 2 hour night set back override, 24 hour trend log history, damper override test mode, and can be interfaced to an auxiliary heat source such as an electric or hot water baseboard, or duct heater.

✓ Adjustable set point range 19C to 25C (66F to 78F).

✓ Display indicates room temperature, space temperature, time, heat/cool mode, and label.

✓ 24 hour trend log.

✓ Damper test mode.

✓ Adjustable heat/cool mode selection for zones.

2-Wire Bus Heat / Cool Occupant Override

SZT-4000 Manual.pdf

Airflow Control

Zone Dampers

The fully modulating zone dampers, model AVD's are available in 6", 8", 10", 12", 14", and 16" round sizes. Upon request we can provide any size of rectangular damper

Our dampers feature elliptical blades for a more linear response and consist of two steel blades fastened together separated by an air tight neoprene gasket for quiet operation.

Round & Rectangular Spring Return 6"–20" Sizes

Damper Manual.pdf

Pressure Relief

By-Pass Damper

The Zone-All by-pass damper maintains correct static pressure in the supply duct when zones close down, preventing the rooftop unit from surging or shutting on high-pressure safety.

Fully adjustable and available in sizes to match your supply duct, the by-pass damper is a critical component of any properly designed VVT system.

Pressure Relief Adjustable Duct-Matched Sizes

By-Pass Manual.pdf

Building Software

Starcom Hub and Software

The Starcom Hub connects Starzone 4000 systems to a building-wide Ethernet network, enabling monitoring, scheduling, and remote access from any web browser — no proprietary software required.

View live zone temperatures, adjust setpoints, configure schedules, and receive fault alerts from anywhere. Ideal for multi-tenant and campus applications.

Web Browser Access Scheduling Fault Alerts Multi-System

Starcom Manual.pdf

Temperature Sensors

TSA / TOA Sensors

The TSA (Supply Air) and TOA (Outside Air) sensors provide accurate temperature readings to the SZM-4000 master controller, enabling intelligent supply air reset and economiser control strategies.

Housed in rugged, low-profile enclosures rated for harsh duct and outdoor environments. Quick plug-in wiring minimises installation time.

Supply Air Outside Air Quick-Connect

Sensor Manual.pdf

TOA Sensor

TSA Sensor

Stand-Alone Control

STA Stand Alone

The STA provides direct zone control for single-zone or small multi-zone applications where a full Starzone 4000 system isn't required. Simple wiring, simple setup.

Supports heating, cooling, and fan control with adjustable deadband and setpoint limits — a cost-effective solution for server rooms, meeting rooms, and retrofit projects.

Single Zone Heat / Cool / Fan Retrofit Ready

STA Manual.pdf

Built for Reliable HVAC Control