Onix Installation Manual.qxd - Affordable Home Inspections

SandwichSandwich ApplicationSandwich applications mimic Staple-Up in almost every way except one.In a Sandwich application, the Onixtubing is placed on top of the subfloorinstead of beneath. Sleepers areinstalled every 8" or 16" on center,depending on the floor constructionand floor covering requirements.These sleepers mimic the function ofthe joist in the main floor, aiding supportfor the upper subfloor that will beadded prior to the finished floor.In some cases, a sandwich applicationmay be installed over an existing slab.In these cases, the installation requirementsare the same as they are forSandwich applications over a framefloor. Variations occur in how the systemsare insulated. Sandwich over slabapplications must be insulated betweenthe sleeper runs to isolate the heat lossinto the slab. For similar Sandwichinstallation techniques, refer to WattsRadiant s SubRay installation manual.2. Onix tubing andWatts Radiant Clamps.Each Onix TorqueTite “ requires anin.-lb. torque wrench for attachment,while the SelfTite “ clampsneed a pair of SqueezeTite “ Pliers.See manifold assembly section formore details. The number of Onixcoils on the jobsite should correspondto the number listed in theZone List report.3. Manifold.Only use manifolds provided byWatts Radiant or Watts Radiantmanifold components for field constructedmanifolds.4. Unwinder.A required component for easilyunrolling each precut Onix coilwithout kinks and twist.5. Field Repair Kit.Each kit contains two barb-by-barbsplices and four Onix Clamps.6. Manifold Mounting Bracket.Each bracket is used to temporarilyor permanently mount each manifoldpair to the floor or wall.7. Watts Radiant staple gun, staplesand NailTites.8. Pressure test kit.Each manifold pair must be pressuretested. This helps ensure each Onixconnection has been assembledcorrectly and that no damage hasbeen done to the tubing duringinstallation.9. Chalk line.FastenersOne advantage Onix has over othertubing options is its natural tendencyto remain where it is placed. If someadded support is needed, such asaround bends or tight corners, regularduct tape can be used to secure theOnix. In some cases, a quick settingadhesive, such as Liquid Nails canbe used.DO NOT use the Watts Radiant staplegun with an Onix sandwich application.The staples will become the highpoint, preventing the Onix fromTools and MaterialsRequiredMake sure all materials are presentand in good working order. Followingare the most common items needed:1. RadiantWorks Reports.These reports will ensure theproper amount of tubing isinstalled in each area, alongwith the correct manifold size.Supply/Return ManifoldsFlooror CoveringUpperSubfloorSubfloorSleepererOnixJoistFoilFaced InsulationSandwich application over frame floor.page 26Watts Radiant: Onix Installation Manual