ASHRAE looked at three types of flame-free mechanical joints that are used in refrigeration and air-conditioning systems, which included; Press/crimp fittings, compression fittings, and flare fittings. They also included a brazed joint as a bench mark against the time...
VRF Piping Connections
There are several methods for joining refrigerant piping to VRF System components and fittings. The following mechanical VRF Piping connections can save labor but will cost extra in material.
ZoomLockâ„¢ by Parker
This is a mechanical joint that can...
VRF System Control Wiring
This VRF System control wiring is for a VRF VRV Heat Recovery System with single port branch selector boxes. The control wiring is very simple, it’s basically two 18 gauge wires that go from the thermostat...
ZoomLock Value Calculator Review
The ZoomLock Value Calculator provides a quick way to analyze the cost difference between doing a project with brazed joints versus the ZoomLock press-fit connection method. In this article we will do a ZoomLock Value Calculator...
Refrigerant Monitoring Code Requirements
ASHRAE 15 requires the monitoring of refrigerant leaks under certain conditions within a mechanical room, but what about an occupied space where refrigerant is circulated through VRF/VRV (Variable Refrigerant Flow) Indoor Fan Coils? When is a...
On August 13, 2020, the inventor and manufacturer of the original ZoomLock fittings – RLS, LLC – announced it was ending its relationship with Parker-Hannifin and will no longer supply its fittings to Parker to sell under...
Refrigerant piping insulation has historically escaped the scrutiny that it has found itself under recently in some jurisdictions. What could possibly be such a big deal with plain old boring refrigerant piping insulation? With energy codes getting stricter during...
How do you increase individual control without adding additional indoor units? Daikin has a Zoning Kit that allows you to increase the amount of zones that are controlled by their own thermostat while using the same indoor...
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ZoomLock or RLS Fittings vs Brazed Fittings
ZoomLock vs Brazed Fittings.
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Which piping joint method is best for your project? There are several things to consider.
What materials are the structure constructed of, and what is...
Active vs Passive Refrigerant Recovery
The active removal of refrigerant from a system using Refrigerant Recovery Machines makes the process much easier than using passive methods. The removal of refrigerant from a system that is being repaired or replaced is...
