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VRF Installation

ZoomLock vs Brazed Fittings. 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 the occupancy of the building? If it is a wood structure then...
VRF / VRV manufactures require that you use their proprietary software to design the refrigeration piping for the installation of their VRF systems. You or your engineer will need to have a cooling and heating load to import or...
VRF Piping Connection Methods Zoomlock LokRing Refnet

VRF Piping Connections

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. ZoomLock™ by Parker This is a mechanical joint that can...
VRF Piping Layout

VRF Piping Layout

Manufactures VRF Piping Layout Drawings The VRF Piping Layout is highly engineered by the VRF manufactures software to design the pipe sizes to meet the capacities and conditions required, including ASHRAE 15. The pipe sizes are affected by capacity, pipe lengths and...
ZoomLock™ Tool Review For those of you that are new to press-fit tools we will cover the features of the Klauke 19 kn tool used on ZoomLock™ fittings, this includes the tool, jaw sets, fittings and accessories required to make...
Tenant Submetering How do you bill tenants for their share of the use of a piece of air conditioning equipment that is shared amongst more than one tenant in your building? If you have a VRF Air Conditioning system, where...
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 Fitting Cost Analysis

ZoomLock Cost Analysis

ZoomLock Cost Analysis Determining if there is value in using a press-fit joint such as ZoomLock™ requires that you look at several factors that impact cost and quality. We covered the technical aspects of ZoomLock™ in another article; see ZoomLock...
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...
VRF Piping Hangers and Expansion Loops When hanging or fastening VRF copper refrigerant piping that involves long runs, then some form of considerations needs to be made for expansion due to temperature differences. If no allowances are made for expansion in...
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