This document serves as the Installation and Commissioning Guide for the ActronAir Variable Capacity Commercial 72 - 96kW Outdoor (R-410A Series) air conditioning units. It provides comprehensive instructions for installation, operation, and maintenance to ensure correct setup and safe, efficient performance.
Function Description
The ActronAir Variable Capacity Commercial outdoor units are designed for ducted air conditioning systems in both residential and commercial applications. These units are engineered for superior performance, high efficiency, reliability, supply air quality, and quiet operation. They incorporate advanced technologies such as variable speed driven inverter compressors, EC outdoor/indoor fans, low-noise outdoor fans, electronic expansion valves (EEV), and intelligent electronic controls. The system delivers precise cooling or heating capacity to maintain desired comfort and optimize energy efficiency.
Important Technical Specifications
Model Numbers: CRV720T, CRV850T, CRV960T
Refrigerant Type: R-410A (zero ozone depleting)
Capacities: 72 - 96kW
Electrical Supply:
- Mains Wiring (400VAC): Three Phase + Neutral + Earth, 50Hz
- Inter-Connecting Power Cable (230/400VAC):
- 2a (Single Phase + Neutral + Earth) 50Hz
- 2b (Three Phase + Neutral + Earth) 50Hz
- Data Cable to Wall Controller: Cat5E UTP (AWG 24) Data Cable
- Extra Low Voltage Data Control Wiring: 2 Core Shielded Twisted Pair 7/0.30 (0.5mm²) Data Cable
Unit Dimensions, Clearances and Weights:
| Unit Model Number |
Overall Nominal Dimension (OA) H (mm) |
Overall Nominal Dimension (OA) W (mm) |
Overall Nominal Dimension (OA) D (mm) |
MTG C-C DIST Mounting Distance Base Foot (Centre to Centre) F (mm) |
MTG C-C DIST Mounting Distance Base Foot (Centre to Centre) E (mm) |
Total Weight (Kg) |
Gas Pipe |
Liquid Pipe |
| CRV720T |
1905 |
2280 |
1205 |
1106 |
1122 |
700 |
Ø28.60 mm (1-1/8") Swaged |
Ø15.88 mm (5/8") Swaged |
| CRV850T |
2345 |
2290 |
1505 |
1106 |
1422 |
834 |
Ø28.60 mm (1-1/8") Swaged |
Ø19.05 mm (3/4") Swaged |
| CRV960T |
2345 |
2290 |
1505 |
1106 |
1422 |
906 |
Ø28.60 mm (1-1/8") Swaged |
Ø19.05 mm (3/4") Swaged |
Refrigeration Piping:
- Maximum Allowable Total Equivalent Field Pipe Length: 75 meters (including fittings and vertical height difference).
- Maximum Vertical Height Differential: 20 meters.
- Field Pipe Sizes (CRV720T): Liquid 5/8" (15.88mm) or 3/4" (19.05mm), Gas 1-1/8" (28.60mm).
- Field Pipe Sizes (CRV850T/CRV960T): Liquid 5/8" (15.88mm) or 3/4" (19.05mm), Gas 1-1/8" (28.60mm) or 1-3/8" (34.96mm).
- Factory Charge (R-410A):
- CRV720T: 13370 gms per circuit.
- CRV850T: Circuit-1 13330 gms, Circuit-2 13830 gms.
- CRV960T: Circuit-1 17120 gms, Circuit-2 18600 gms.
- Additional Refrigerant per meter: 165-220 gm/m depending on pipe length.
- Pre-charged Oil Quantity Length: 40m (CRV720T), 55m (CRV850T), 75m (CRV960T).
- Additional Oil per meter: 25 ml/m (CRV720T, CRV850T), NA (CRV960T).
Circuit Breaker Size Recommendation:
- CRV720T/EVA720T: 63 Amps
- CRV850T/EVA850T: 80 Amps
- CRV960T/EVA960T: 80 Amps
Service Clearances:
- Service Access Clearance (Coil Side): 500mm
- Service Access Clearance (Compressor & Electrical Control): 1000mm
- Service Access Clearance (End-to-End/Cluster/Side-by-Side): 600mm
- Airflow Allowance: 500mm (all sides)
- Height Clearance for banked units: 1500mm
- Maximum External Static of Outdoor Fans: 90 Pa
Usage Features
Control Options:
- Wall Control (Default): Compatible with ActronAir NEO, LR7-1, and LC7-2 wall controls for comprehensive system management.
- Basic BMS: Connects to a network via a BMS card (ICUNO-MOD), allowing operation similar to ActronAir wall controls.
- Wall Control + Basic BMS: Combines both control methods, with priority given to the most recent command.
- Advanced BMS: For systems requiring customized functions beyond standard software/logic, while retaining safety logic.
- Third Party Control: Allows control of Fan, Compressor, and Reversing Valve by external systems using 0-10V analogue input or fixed indoor fan speed.
Demand Response Management (DRM): Compliant with AS/NZS 4577.3.1:2012.
- DRM1 (Compressor Off Mode): Compressor cycles off for the entire event; other functions operate normally.
- DRM2 (Maximum 50% Power Use Mode): Compressor operates within 0% to <50% of total power.
- DRM3 (Maximum 75% Power Use Mode): Compressor operates within 0% to <75% of total power.
- Note: DRM is not applicable when using third-party control.
Remote On/Off: The unit can be wired to be turned ON and OFF remotely from the Outdoor board, configurable via the Outdoor Board menu.
Run and Fault Indication Output: Provides relay outputs (230VAC/5A MAX) for system run status and fault conditions, configurable for either compressor or indoor fan operation.
Refrigerant Charging:
- R-410A refrigerant must always be charged in liquid state into the unit liquid line.
- Charging into the high-pressure side is recommended when the system is in a vacuum.
- During compressor operation, charging can be done through the suction service port (larger of the two shut-off valves) in cooling mode.
- Subcooling and Superheat method is used for optimal performance.
Maintenance Features
Annual Maintenance Checklists:
- General Inspections: Perform general maintenance inspections and scheduled start-up checks.
- Refrigerant Circuits: Leak test refrigerant circuits.
- Electrical Connections: Inspect, clean, and tighten all electrical connections. Check contacts of all contactors and relays, replacing worn ones as needed.
- Fans: Check for balanced operation, ensuring no loose screws/bolts, fan blade interference, or damage.
- Air Filters: Inspect, clean, or replace air filters as required.
- Panel Sections: Clean and repaint any corroded panel sections.
- Airflow: Ensure no blockage of airflow through the variable speed drive.
- Coil Cleaning: Clean condenser coils at least once a year, or more frequently in dusty environments. Use a soft brush and water spray with low pressure. Avoid high alkaline detergents (pH > 8.5) to prevent corrosion. Ensure no water enters electrical compartments.
- Compressor: Measure insulation resistance and check for abnormal noise/vibrations.
- Operational Readings: Record operating pressures, superheat, and subcooling values in test cool/heat modes.
- Safety Devices: Check calibration of safety devices (HP/LP controls, sensors).
- Fault History: Investigate any causes for previous faults and reset fault history.
Safety Precautions:
- Only licensed HVAC technicians should install and service the equipment.
- Observe all prevailing WH&S regulations and safety instructions in the manual.
- Ensure unit installation complies with relevant council regulations and building codes.
- All electrical wiring must be in accordance with current electrical authority regulations and diagrams.
- TURN-OFF power from the main isolator and observe LOCK-OUT/TAG-OUT (LOTO) procedures before any service work.
- Wait at least 5 minutes after power isolation for EC Motors and Compressor Drives to discharge residual voltages.
- Ensure fans are isolated and stopped before servicing. Beware of pinch points and sharp edges.
- Always wear appropriate PPE.
- Refrigerant handling must be done responsibly, recovering, recycling, and reusing refrigerants. Never release refrigerant to the atmosphere.
- Evacuate the system thoroughly to 500 microns before charging.
- A leak test is always required on any repaired section of the refrigeration system.
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