HVAC Install Guide 2011

INSTALLATION

of VRV / VRF

System

Using Lokring

INSTALLATION

of VRV / VRF

System

Using Lokring1

Roof Mount Outdoor UnitRoof Mount

Outdoor Unit

2

FINISHED OUTDOOR UNITFINISHED OUTDOOR UNIT

Avoid mechanical stress and misalignment of tubing

by carefully laying out & supporting tubing prior to completing connections.

Expansion loops and cutouts should always be

included as per manufacturers guidelines.

3

EURO FLARE CONNECTIONEURO FLARE CONNECTION

R410A Lokring Euro Flares are available in

sizes ¼ inch thru ¾ inch.

These connections are used at Outdoor Units, Branch Selector Boxes,

and Indoor Units.

4

R410A systems require exacting flare specifications and forming procedures. These specs are

different than standard 45 degree SAE flares.

Failure to follow manufacture’s specs on flare connections is the Number 1 cause of System Leaks

R410A Euro Flares take the Failure Modes Out!

Lokring Euro Flares include replaceable preformed flare

inserts, nut and Lokring connector half body, and are designed for use on R410A

system.

5

Installing a Lokring R410A Euro Flare

A drop of oil compatible with the system oil should be applied to the seal and back of the flare body to ensure accurate torque reading.

No joint compound or sealer should be applied to mating surfaces of flare faces. Threaded connection should be tightened to manufactures specs before completing Lokring connection.A new flare insert should be used each time the connection is loosened or taken apart for service.

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Roof Access Connections Roof Access Connections

Lokring offers elbows and tees in

both metric and SAE tube sizes.

7

Lokring Long Radius Elbow versus Lokring

Standard Elbow.

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Installing InsulationInstalling Insulation

Standard insulation will slide over

Lokring connectors.

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Indoor Unit ConnectionsIndoor Unit Connections

Lokring connectors allow for

preassembly prior to final connection

helping in awkward or tight locations.

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Completed Indoor Unit ConnectionsCompleted Indoor Unit Connections

Tubing should be supported before

completing Lokring connections.

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Pre-position parts for the installation, to help

the assembly in constricted or tight

areas.

INSTALLATION OF THE TUBES

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FINISHED INSTALLATIONFINISHED INSTALLATION

Planning your piping layout and allowing for the

last connection to be on the longest run, assists with avoiding stress

points.

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Y-TUBES FOR MULTISPLITTINGY-TUBES FOR MULTISPLITTING

Layout of an inverter system:LOKtube YT and YP

branches are used to join various styles of indoor units

to a single out door unit. LOKtube headers are also

available.

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LOKtube YT-Branches at Multi Indoor UnitsLOKtube YT-Branches at Multi Indoor Units

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Application off LOKtube YT branches.

THE COLD CLEAN CONNECTIONTHE COLD CLEAN CONNECTION

Internal Cleanliness comparison of a Lokring Connection and a Brazed Joint.

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Speed and Ease of Installation The LOKRING Tube Connection allows a fast

and reliable connection of tubes, even of different material. This tube connection system is a cold, clean method that eliminates the need

for Brazing.

Field reports indicate a Labor savings of between 30% and 50% on various Ductless System

Installations and also eliminates the need for nitrogen flow during installs.

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