When installing a Daikin VRV (Variable Refrigerant Volume) system, there are several key factors to consider to ensure proper installation and maximize system performance. AirReps has invested in VRV field project specialists in each of our offices to make sure each job is a success. Our team is here for clients and partners to lean on for questions and guidance on how to properly install each unique system. Every job is different, and we’re great at working around the different nuances of the job.
- Take the Daikin install and commissioning class
- This really is step one. It’s worth taking our certified classes, which provides attendees with the foundation to build upon for a successful installation and start-up of our equipment.
- Correct Location for Indoor and Outdoor Units
- Indoor Units: Install the indoor units free from obstructions that could restrict airflow. Ensure there is easy access for maintenance. Always check the install manual as each individual indoor unit has variations in clearances.
- Outdoor Units: Place outdoor units in areas with sufficient air flow, avoiding locations that might cause the unit not to breathe properly. Always refer to the install manual.
- Refrigerant Piping Layout
- Work closely with AirReps to ensure the design intent is met. These systems are carefully designed on paper; we need to work closely to make sure the layout of the piping in the building will avoid unnecessary traps or breaking piping rules.
- Condensate Management
- Outdoor units- Keep in mind that these units will go into defrost mode and produce a substantial amount of condensation in the wintertime. Ensure there are clear paths for the condensation to travel
- Indoor units- Follow local code for disposal of condensation. Ensure that condensation can flow freely and that there are no obstructions in the piping network.
- Electrical Connections
- Ensure proper electrical connections according to Daikin’s guidelines and local codes. Proper grounding and protection against power surges are essential to avoid damage to the system. For the low volt wiring portion, 18-2 stranded, non-shieled copper wiring is required. No splices of any kind. Refer to the installation manuals.
- System Pressure Testing
- Before charging the system with refrigerant, perform a pressure test to check for leaks in the refrigerant lines. This is critical for ensuring system efficiency and preventing refrigerant loss. For Daikin VRV 3 equipment, you can pressure test to 450 psi if you have a FXTQ fan coil(s), without FXTQ’s, 550 psi is permitted.
- Correct Refrigerant Charge
- Charge the system with the correct amount of refrigerant as per the Daikin specifications. Overcharging or undercharging the system can lead to poor performance or system failure. Work closely with AirReps on this, we’ll give you the accurate trim charge based off of your actual pipe lengths.
- Clearance for Maintenance
- Ensure that there is enough space around the units, both indoor and outdoor, for future maintenance and service. A minimum clearance around the units should be followed to allow for airflow and technician access.
For any additional questions about your commercial HVAC system, Daikin VRV, or any other products from our lineup of manufacturers, contact our AirReps HVAC experts at [email protected] today!