Tips on Adequate VRF System Installation

Both commercial and residential customers are starting to show an increased interest in VRF, or Variable Refrigerant Flow heating and air conditioning systems offered by reputable HVACR distributors such as Gustave A. Larson. And rightfully so. VRF HVAC systems are a modern alternative to traditional heating and air conditioning solutions that allows for more control of the overall comfort while providing additional benefits.

However, the installation of a Variable Refrigerant Flow system can be more complicated when compared to standard HVAC systems. In order for your customers to actually reap all the benefits of such a system, it’s up to you to adequately install it. Here are some considerations you have to make before installing a VRF system for your commercial or residential clients. 

How Do I Properly Install a Vrf System?

VRF systems provide many advantages over traditional HVAC solutions. They eliminate installation limits of packaged and large-scale air handling systems without sacrificing any efficiency. They also provide energy savings, simple operations, and lower upfront costs. 

However, in order for your clients to actually experience all these benefits, it is up to you to properly and correctly install their Variable Refrigerant Flow HVAC unit. Here’s what you should pay attention to before proceeding with the installation. 

Accurate Sizing

The first thing to pay attention to is accurately sizing the VRF unit your customers want to purchase. If the indoor VRF units lack the capacity to adequately meet load requirements, they will be unable to maintain the necessary setpoints. Alternatively, a unit that is too large for the load in question will spend more energy unnecessarily and be in greater risk of developing faults. 

Think About Additional Space

Fresh air delivery through a VRF system can potentially require additional terminal boxes, ductwork, and sometimes even a management system for the entire building. It is important to pay attention to your customer’s specific requirements, lay down any necessary groundwork, and only then proceed to install the actual system. 

Consider Ventilation

If the zone your client wants to condition with a VRF system must be ventilated, you have to think about providing access to windows or take an MAU into consideration in order to meet the ASHRAE Standard requirements for ventilation. 

Ensure BMS Are Able to Communicate

If you are planning to integrate the VRF system with a building management system with a BACnet, you will need to install an adapter that allows for communication between the two systems. Without such a connection, the maintenance staff would be tasked with managing two distinct front ends in order to successfully run the HVAC system of the building. 

Plan for Maintenance

Plan out the installation of the system and the location and length or refrigerant lines so that regular maintenance procedures can be conducted quickly and efficiently. For example, you want to be able to promptly detect a potential refrigerant leak and resolve the problems as soon as possible. 

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