Temperzone Ducted Packaged Units

Introduction

Temperzone's Econex Packaged rooftop HVAC units offer ultimate flexibility and performance for open-plan commercial environments. The Econex series provides energy efficiency, low start-up current, a wide operating range (-10°C to +50°C ambient conditions), and potential for 'free' cooling using an Economiser option. Econex Pro models add integrated controls, intelligent software for changing conditions, enhanced energy efficiency, and additional control options.

Applications

These units are specifically developed for air conditioning of large commercial premises, including retail warehouses, supermarkets, shopping malls, educational facilities, sports venues, exhibition centres, industrial process facilities, and auditoriums.

Key Features

• Lower GWP: Utilizes R32 Refrigerant, offering a 75-80% reduction in Global Warming Potential (GWP) per kW of cooling compared to R410A units.
• Economy: Econex units use a combination of inverter and fixed-speed compressors. Econex Pro models feature four variable capacity inverter compressors for enhanced part-load efficiency and redundancy.
• Efficient: Incorporates inverter scroll compressors for high part-load efficiency. Indoor fans can also operate at part load for further efficiency gains. High-efficiency electronically commutated (EC) motors are used for plug fans. Large heat exchange coils with inner grooved tubes enhance heat transfer.
• Better Comfort: Variable speed technology allows for fine-tuning, leading to improved temperature stability and occupant comfort.
• Intelligence: Econex Pro units feature intelligent software that self-adjusts to maintain required temperature and humidity levels, optimizing for part-load efficiency, performance, or a balance of both.
• Quiet Operation: Integral high-efficiency EC fan motors allow for slow ramp-up. Outdoor coil design permits low fan speeds. Compressors are isolated in insulated compartments, and the indoor air section is also insulated for noise attenuation.
• Durable Construction: Cabinets are made from high-grade galvanised steel with baked polyester powder coating (AS 4506:2005, Grey) for weather protection (IP44/IPX4). External fasteners are marine-grade SKT® coated steel. Units include a baked polyester powder coated internal condensate drain tray. Heat exchange coils use aluminium fins on mechanically expanded rifled copper tubes, with pre-epoxy coating for corrosion resistance. Fan motor bearings are sealed for life. Coil protection guards are included.
• Easy Access: Service panels are hinged with turn locks for straightforward maintenance access.
• Improved Indoor Air Quality: Units accommodate 50 or 100 mm thick panel filters. Indoor fans ventilate the building, with an option for fresh air introduction via an Economiser Kit.
• Low Maintenance: Utilizes fans requiring no pulley or belt adjustments. Controlled outdoor section drainage prevents water pooling.
• Inverter Compressor: Hermetically sealed, quiet-running inverter compressors are supported on rubber mounts to minimize vibration and provide part-load economy.
• Soft Starting: EC motors and inverter compressors offer soft starting, eliminating high in-rush current issues.
• Insulation: Closed-cell foam insulation in the indoor air section prevents particle introduction into the airstream. Both indoor and outdoor chambers are insulated to prevent external condensation. Insulation meets fire test standards AS 1530.3 (1989) and BS 476 parts 6 & 7.
• Unit Control System: Econex uses four Temperzone UC8 controllers with a master UC8 for staging, status, and alarms. An external controller is also required. Econex Pro uses a Carel c.pCO master controller with four UC8 slave controllers, offering fully integrated, stand-alone operation. An optional remote display (pGD1) is available.
• Control Options: Econex Pro can maintain airflow using a differential pressure transducer. Both Econex and Econex Pro EC plug fans can be controlled via a 0-10V DC signal from a BMS or the c.pCO controller. Units are BMS compatible (Modbus RTU, Modbus TCP/IP, BACnet/IP) and can operate as turn-key systems.
• Extended Capability: Inverters are suitable for applications requiring high fresh air, VAV, and close control. Supply air temperature control is possible via BMS or other controls.
• System Protection Features: Includes HP/loss of refrigerant protection, anti-rapid cycle timer, circuit breaker control, electronic de-ice switch, frost protection, sensor fault indication, and crankcase heater.
• Self Diagnostics: Unit Controllers (UC8) have LED displays for faults. Econex Pro faults are displayed on the master controller.
• Compact Design: Self-contained units compared to split systems.
• Wiring: Designed for 3-phase 400V a.c. 50 Hz supply. Complies with RCM for electrical safety and EMC standards. Includes a single-phase auxiliary power outlet.
• Plant Room Use: Units are supplied with high static condenser fans. Correct clearances and no air recirculation are required for performance.
• Configurations: Available in horizontal and downward supply/return air versions, with opposite-hand options. Integrated Hot Gas Reheat coil is an option.
• Optional Equipment: Includes filters (G4 rated), TZT-100 wired wall thermostat, Remote Service Interface Display (pGD1), Economiser kits, Spill Air kits, controller expansion modules, and BACnet gateway controllers.
• Economiser Option: Provides 'free cooling' by utilizing outdoor air when its heat content or wet bulb temperature is below that of the return air. Econex units include dampers/motors/cowl (controls by others); Econex Pro includes dampers/motors/cowl and temperature/humidity sensors with Economy Cycle control.
• Reheat Coil Options: Econex Pro can be supplied with an integrated hot gas reheat coil for humidity control or an external hot water coil for utilizing waste heat.

Key Differences: Econex vs. Econex Pro

Controls

TZT-100 Controller (Optional)

• Supports Cool, Cool Dry, Heat, Auto Dry, Auto, Fan Only modes.
• Auto/High/Medium/Low fan speed selection (customisable).
• Temperature setting range: 1°C - 38°C.
• LED status indicator [Power On/Off].
• Room and set temperature display.
• Real-time clock with 12/24 hour display.
• °C or °F display.
• 7-day timer (up to two events per day).
• On-demand countdown run timer (up to 9 hours).
• Auto-Restart or No Restart after power failure.
• Continuous or intermittent fan run-on in dead zone.
• Backlit screen, soft-touch keys.
• PIN protected menus (Installer PIN).
• Keypad and/or temperature lock.
• Filter monitor option (by hours).
• Occupancy sensor inputs.
• Integrated Modbus option.
• Battery backup (Lithium).
• Night mode for temperature setback to save energy.
• Audible beep for key entry or wireless remote control.
• 24V control cable.
• Optional remote air temperature sensor.
• Note: TZT-100 is not suitable for Econex Pro units and does not control an Economiser.

Carel c.pCO Advanced Controller

• Adaptive technology for flexibility and user-friendliness.
• Fully integrated controls for all unit functions.
• Pre-programmed optimisation and comfort modes.
• Intelligent humidity control.
• Built-in controller display for quick set-up and function display.
• Room temperature and humidity sensors supplied loose.
• Return and supply air sensors factory fitted.
• Fresh air temp/humidity sensor supplied for units with Economiser.
• Single and averaging temperature sensor options.
• Indoor fan control for constant speed or airflow.
• Occupancy offset feature to set back room temperature during unoccupied periods.
• Reduced indoor fan speed during unoccupied times to minimize energy use.
• Night/Quiet Mode to reduce noise levels.
• Daily scheduled on/off operation (up to 4 events per day, 7 days).
• Individual time clock for night mode or unoccupied mode, independent of the 24/7 time clock.
• Economy Cycle control using enthalpy for outdoor/return air dampers.
• Spill Air control for optional spill air dampers.
• Multi-level security and password protection.
• Service Interface screen with data logging and alarms; USB exportable file.
• Refrigeration system information available (power monitoring, etc.).
• Quick Start-up user settings.
• Dirty air filter indicator.
• Blocked condensate drain alert.
• Remote on/off capability.
• Battery backup for settings.
• Expansion modules available for additional sensors (e.g., CO2) or external water valves.
• Tempering control of supply air during cooling dehumidification.
• Optional remote wired Service Interface display (pGD1).

Performance Data

The following tables provide detailed performance data for Cooling Capacity (kW) and Heating Capacity (kW) across various operating conditions (Outdoor/Indoor Air Temperature, Air Flow). Capacities are gross and do not include allowance for fan motor heat loss.

Note: Detailed performance data tables are available in the original document for specific operating points.

Air Handling

Air Handling performance is illustrated through graphs showing Available External Pressure (Pa) vs. Air Flow (l/s) and Power Input (kW) vs. Air Flow (l/s) for different fan speed voltage inputs (e.g., 5V, 6V, 7V, 8V, 9V, 10V) and corresponding current draws (A). These graphs are for dry coils and do not include filters or Reheat coil options.

Sound Levels

Indoor Sound Levels

Sound Power Levels (SWL) and Sound Pressure Levels (SPL) are provided for indoor air outlets across various octave band frequencies (125 Hz to 4 kHz). Data is presented for different models (OPA 1410, 1710, 2110) and fan speeds (e.g., 4V, 7.5V, 6.5V). Sound Pressure Levels within a room are derived by deducting room absorption effects based on room type (Soft, Medium, Hard).

Outdoor Sound Levels

Sound Power Levels (SWL) – Radiated and Sound Pressure Levels (SPL) are detailed for outdoor fans across octave band frequencies. Data is provided for different models and fan speeds, measured in decibels re 1 picowatt and decibels re 20 μPa respectively.

Dimensions

Dimensional data is provided for OPA 1410, 1710, and 2110 models in horizontal supply configurations, including point loads (kg) for standard and economiser versions. Diagrams illustrate upward and downward supply/return air options, showing key measurements and spigot flange details. Minimum clearances for multiple units and access points are indicated.

Specifications

Nomenclature

The model number nomenclature provides details about the series (OPA), size (nominal capacity in kW), type (e.g., R for reverse cycle, L for R32 refrigerant, T for three-phase power, M for multiple compressors, F for number of inverter compressors, P for EC Plug fans, Q for EC outdoor fans, D for advanced controller), configuration (e.g., I for Hot Gas Reheat Coil, Z for Economiser, 01 for Standard Horizontal Supply/Return Air), and options.

Contact Information

Temperzone has offices across Australia, New Zealand, Singapore, and other locations. Key contact details including Head Office addresses, phone numbers, and email addresses for sales inquiries are provided for Auckland, Sydney, Hamilton, Wellington, Christchurch, Newcastle, Launceston, Adelaide, Melbourne, Brisbane, Singapore, and Perth.