Job Site Installation

Straight Run of Rectangular Trunk Line (left); Trunk Duct coming out of Mechanical Room in Airport construction (right) In commercial buildings, whether it be a school, movie theater, office building, arena or hospital, there is a trunk line in the Ductwork serving as the main artery for airflow originating from the indoor air handling units […]

Duct Access Doors are placed in the ductwork, often in the sidewall for easier removal and clearer line of sight, to give access inside the duct. This access is most essential during the inspection process when ensuring that the fire dampers are functional; in fact many Air Distribution plans refer to these as “Access Doors

Is Painting Duct Wrap to Match the Ceiling a Thing of the Past? It’s commonly known that fiberglass duct wrap insulation comes standard with an FSK aluminum foil jacket. In fact, over 95% of commercial installations using duct wrap have an FSK jacket. As building design trends shift toward leaving ceilings exposed, this has created an

Square Framed Access Doors are most commonly the Dovetail Tabbed type with a Cam on either side or a Cam and Hinge on either side. They are often included in the Air Distribution package, included as a Lump sum amount. Increasingly, Mechanical contractors study every portion of the Job Site Processes in an effort to

*These instructions are for EPDM ballasted, mechanically attached, or fully adhered roof systems. Before You Start: Inspect the existing roof with a qualified professional to ensure that it is in good condition and meets local codes and manufacturer’s warranty requirements.Contact nVent Customer Care for a list of qualified installation professionals. Layout: Appropriate frequency and spacing

Step 1: Install the rooftop anchor, purchased seperately. Ensure that anchor is installed so that the cable will be at a 45 angle when installation is complete. Refer to the instruction sheet included with the anchor or www.nVent.com for installation instructions. Ensure the screws are snug, but not so tight as to create a depression

*These instructions are for PVC, TPO, and KEE mechanically attached or fully adhered roof systems. Before You Start: Inspect the existing roof with a qualified professional to ensure that it is in good condition and meets local codes and manufacturer’s warranty requirements. Weldability of the membrane should be verified when determining suitability of the roof.

Fabric Ductwork a.k.a. Air Socks FabriDuct is woven polyester cloth ductwork which displaces air along the entire length of the duct through various fabrics and linear vented slots. Its light weight means a lighter roof load and less need for heavy equipment in installation Round HVAC Duct made of Fabric… Have you ever considered the

Johns Manville Microlite White PSK Duct Wrap Contractors frequently “wrap” the standard silver jacket FSK Duct Insulation around the Ductwork once it’s hung. Then, the owner or General Contractor often has this Insulation painted to blend in with the ceiling which is often black or white. But this voids the manufacturer’s warranty on the Insulation.

Duro Dyne EZ Corner Connector Point the self-guided screw anywhere thru the hole and turn on the drill and simple as that…the screw bolt aligns the mating ducts, pulling them together for a fast connection Currently, Rectangular Duct is connected this way: Use a drift pin to line up the holes Manually insert a Carriage

Johns Manville Microlite Black PSK Duct Wrap Johns Manville (JM) has introduced a black-coated duct wrap insulation, Microlite® Black PSK (Polypropylene-Scrim-Kraft) Duct Wrap. Like JM’s other Microlite Duct Wrap Insulations, this new insulation is Formaldehyde-free™ and has a facing with a perm rating of 0.02. Contractors frequently “wrap” the standard silver jacket FSK Duct Insulation

Hurricane Aluminum Rooftop Equipment Stands Hurricane Stands as seen installed on a Miami rooftop Miami-Dade NOA#: 18-0828.09   Roof top units are typically set on the roof directly, however in hurricane zones, Florida Building Code requires all rooftop equipment and supports be elevated and secured to the structure.  Elevating roof top units allows air to pass around all

Wire Hanging System Wire Hanging Systems are made up of two main components: wire rope and cable locks… Contractors and Installers alike enjoy the time savings of hanging 10′ sections of pipe instead of 5’ and not having to seal the longitudinal seam. This labor savings can be significant, but once paired with the Dyna Tite cable hanging system the labor savings become substantial when compared to using

Duct Board Our Mobile, Orlando, and Miami branches offer contractors free use of our in-house Glassmaster SG-220 Duct Board Grooving Machine Using the Duct Board Cut Sheet below, provide Conklin the R value size and length for your order and we can cut your duct board in house Duct Board Cut Sheet   Johns Manville

Vent Pipe for Condos, Apartments, and Hotels Everywhere you look in cities like Atlanta, Nashville, Miami, and Tampa you’ll see apartments, condos, and hotels under construction. Because each unit has a clothes dryer and bathroom fan, there’s a lot of piping required to move that exhaust out of the building. These are vented either through

Drill Screws…taking it to another level     Tech 5 Pro-Point Screws, with a precision formed drill point, are designed to fasten heavy gauge metals. These screws assure accurately sized holes for maximum holding power, eliminating the need for hole preparation and frequent alignment problems encountered in parts assembly. Ideal for fastening to structural steel

Thermaflex MK-E In Miami Dade county, all Hospitals and School jobs are now requiring the M-KE Thermaflex Flex Duct. What makes this Flex Duct special? …it has qualities that allow for air to flow at high velocities and positive pressure at low levels of sound.  For one, it has a CPE Core; this stands for Chlorinated

Silicone Sealant—Ideal for many applications….unless it’s to be Painted Silicone is supposed to last forever, but don’t use it on an application that will be painted. Conklin stocks in four colors. In sequence of popularity they are: Clear, Aluminum, Red (high temp, but not fire stop), and White.  

HVAC Installation Tools Rectangular Duct Installation tools and materials: Why promoting efficiency matters!    In markets like Miami and Fort Lauderdale, most Mechanical Contractors do not have sheet metal fab shops and thus do not build the Duct. Instead, they sub out the fabrication of HVAC Ductwork to a Duct Fabricator. When the Ductwork is

Standing S Lock What’s a contractor to do when the width of a duct is larger than 2 ft but they still want to use Slip and Drive as the Transverse connection rather than moving to Ductmate (or TDC)? After all, without having to line up 4 Corners and gasketed frames for mating, the installation

Greenseam Plus Snaplock Pipe  There’s a shortage of labor in the commercial construction market; this has elevated the need to reduce as much job site labor as possible.  For the HVAC contractor, one of these job site tasks is the sealing of the Snaplock Pipe . It’s almost always done with bucket and brush in

Slip & Drive Duct Installation Slip and Drive Duct is the most common type of rectangular ductwork. Even the largest Duct fab shops will tell you that Slip and Drive duct accounts for a greater percentage than the TDC/F and Ductmate flanged duct they produce.   In low pressure duct, the standard means of connecting two

The Cost of Labor in the Field vs the Cost of additional deliveries to Job Site?     More Mechanicals and Sheet Metal Contractors are moving in the direction of not only Fabricating Duct Sections in the Shop but also connecting and Sealing the Joints. This is a result of the continuing challenge of quality

Are Mechanical Contractors starting to use third party companies to Install the Sheet Metal Ductwork?   In several of our markets we’ve seen an increase in companies that are built around an increased need: Commercial Duct Installation    Labor Shortages are forcing many Mechanicals to try something new: subcontract the Installation of the Sheet Metal