Overview
Fujitsu General’s VRF systems incorporate advanced Energy-Saving Features to optimize power consumption while maintaining comfort and efficiency. These features are ideal for buildings with varying occupancy patterns and environments where reducing energy costs is a priority.
Key Features of Energy-Saving Functions
Automatic Off Function:
Automatically turns off the system when no occupancy is detected for a set duration.
Peak Power Consumption Control:
Limits the system’s total power consumption to a preset threshold to prevent energy overuse.
Ventilation Interlock Function:
Coordinates the operation of the air conditioning system with external ventilation systems to optimize airflow and reduce energy waste.
Human Sensor Integration:
Detects room occupancy and adjusts the operation accordingly to reduce energy use in unoccupied spaces.
Keycard Interlock Function:
Automatically switches off the air conditioning when a keycard is removed, common in hotels and guest accommodations.
Nighttime Low Noise Mode:
Reduces both noise and energy consumption during off-peak hours.
Use Cases
Office Buildings: Automatically shuts down unused systems during off-hours or in unoccupied meeting rooms.
Hotels: Keycard interlocks ensure energy savings when guests leave their rooms.
Retail Spaces: Peak power consumption control during high-demand periods ensures operational efficiency.
Energy-Saving Features Overview
| Feature | Description |
|---|---|
| Automatic Off Function | Turns off the system after detecting no occupancy for a set time. |
| Peak Power Control | Limits power usage to reduce electricity demand charges. |
| Ventilation Interlock | Synchronizes with ventilation systems for optimized airflow and energy use. |
| Human Sensor Integration | Detects occupancy and adjusts operation to reduce energy use. |
| Keycard Interlock | Turns off air conditioning when the keycard is removed. |
| Nighttime Low Noise Mode | Minimizes energy use during nighttime operation. |
Setting Up Energy-Saving Features
Configure Automatic Off Settings:
Access the system’s settings via the remote controller or control panel.
Input the Function No. and Setting No. for automatic shutoff.
Enable Peak Power Control:
Set the desired power consumption limit on the outdoor unit’s printed circuit board (PCB).
Use Mode No. 03 for levels ranging from 40% to 100% capacity.
Integrate Human Sensors:
Connect human sensors to the indoor units via the external input terminals.
Ensure correct wiring and DIP switch settings for activation.
Set Up Keycard Interlocks:
Install a keycard reader and connect it to the VRF system using the external input kit.
Test to confirm proper ON/OFF operation.
Configure Nighttime Low Noise Mode:
Adjust noise level and operational priority settings on the outdoor unit PCB.
Use Mode No. 40 (Quiet Priority) or Mode No. 41 (Capacity Priority).
