Daikin Rooftop Units
Daikin commercial rooftop units feature innovative technology, high energy efficiency, and advanced control capabilities that optimize comfort while reducing operational costs.
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Popular Models
Technical Specifications
Capacity & Efficiency
Airflow & Pressure
Dimensions
Power Requirements
Common Issues & Solutions
Inverter drive faults
Symptoms:
Error codes on display, compressor not operating, reduced capacity, overheating
Solution:
Check power supply quality, verify proper grounding, inspect for physical damage, clear error codes and monitor. Replace inverter board if consistently failing.
Communication errors
Symptoms:
System unresponsive to controls, error codes, intermittent operation
Solution:
Inspect communication wiring for damage, check for interference sources, verify termination resistors, update firmware if available, replace communication module if necessary.
Refrigerant circuit issues
Symptoms:
Inadequate cooling, unusual pressures, compressor short cycling
Solution:
Check refrigerant charge, inspect for leaks, verify expansion valve operation, ensure proper superheat and subcooling values, repair or replace components as needed.
Cost Information
| Service | Average Cost | Cost Factors |
|---|---|---|
| Annual maintenance contract | $1,200-$4,000 | Unit size, service frequency, component complexity, filter program inclusion |
| Coil replacement | $2,500-$12,000 | Coil size and type, material (copper/aluminum), custom configurations, access requirements |
Frequently Asked Questions
What makes Daikin Rebel rooftop units unique in the market?
The Daikin Rebel series features variable speed inverter compressor technology that delivers part-load efficiencies exceeding ASHRAE 90.1 standards by up to 84%. They also include direct digital controls, variable frequency drives on supply fans, and modulating heating options for precise comfort control.
How does Daikin's Intelligent Equipment controller enhance RTU operation?
Daikin's Intelligent Equipment controller provides cloud-based monitoring and control, real-time performance data, automated fault detection and diagnostics, energy consumption tracking, and remote access capabilities. It can generate performance reports and send automatic alerts when issues are detected.
Can Daikin rooftop units use alternative refrigerants?
Yes, Daikin has been transitioning to lower global warming potential (GWP) refrigerants. Depending on the model, Daikin offers units with R-410A, R-32, and is developing solutions with R-454B, which has a significantly lower environmental impact than traditional refrigerants.
What are the ventilation options for Daikin commercial rooftop units?
Daikin RTUs offer multiple ventilation options including standard economizers, energy recovery wheels, dedicated outdoor air systems (DOAS), demand-controlled ventilation with CO2 sensors, and hot gas reheat for precise humidity control. These options can be factory or field installed.
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