NEWSLETTER

New and Revised Section Synopses: 

New Section 04 2616 (04817) - Adhered Masonry Veneer

Adhered Masonry Veneer covers thin brick installed over a masonry substrate or over sheathing and studs specified in other sections. This section includes thin brick units, adhesives, lath, mortar, grout, flashings, and accessory materials. (Mortar, grouting, lath, and thin brick for use in precast panels can also be specified separately in other SpecLink sections.)

New Section 23 8129 (15732) - Variable Refrigerant Volume (VRV) HVAC System 

VRV systems are highly efficient heat pump "split" systems, with much longer piping runs possible than conventional refrigerant systems. A typical outdoor/condenser unit serves 5-20 indoor units, can be ganged in series, and can be up to 3000 feet away from the farthest indoor unit. Systems are available to heat and cool simultaneously, as well as heat or cool, but only one at a time.

All VRV systems are essentially proprietary. There are relatively few manufacturers and the manufacturers' systems and products have different features and capabilities. Most VRV manufacturers provide their design software to their authorized installers. This section is currently written around the products of Daikin Americas, www.daikinac.com, as the Basis of Design.

This section can be used in the conventional manner, to specify the equipment and system performance, after design by an engineer. It can also be used for a semi-design-build project, where only some equipment characteristics have been determined and the contractor (or his subcontractor) is assigned the responsibility of designing the system, based on the manufacturer's criteria. In theory, it can also be used for a total design-build situation provided you specify the design criteria correctly. Sample design criteria are included in the section.

This section is accompanied by another section:  23 8130 - BASIS OF DESIGN VRV EQUIPMENT - DAIKIN, which lists all the condenser and evaporator units made by Daikin and their critical performance data. This list can be used to specify the equipment required by the design, if not shown on the drawings.

New Section 26 0923 (16145) - Lighting Control Devices

This section covers several types of devices commonly used for automatic control of lighting:

• Occupancy Sensors:  Wall switch, ceiling-mounted, directional, and luminaire-mounted types as well as associated power packs and accessories. Occupancy sensors may be passive infrared, ultrasonic, dual technology passive infrared/ultrasonic, or dual technology passive infrared/acoustic where applicable; line voltage with self-contained low-voltage transformer and relay, or low voltage for control of compatible power packs; with or without adaptive technology for automatic adjustment of settings; with or without integral photocell for inhibition of automatic turn-on of load. Various coverage ranges are available.
• Outdoor Motion Sensors:  With or without integral lamp holders.
• Time Switches:  Digital electronic and electromechanical types; 24-hour, 7-day or astronomic scheduling.
• In-Wall Time Switches:  Digital electronic and electromechanical types.
• In-Wall Interval Timers:  Digital electronic and spring wound types.
• Outdoor Photo Controls:  Direct wired stem-mounted, locking receptacle-mounted, and button types. Locking receptacle-mounted types may have cadmium sulfide or silicon photo diode sensors and metal oxide varistor or air gap arrestor for surge protection.
• Daylighting Controls:  Photo sensors, switching and dimming modules, and associated power packs.  Switching modules may be single zone or multi-zone.

See the article Get Control of Your Lighting for additional information about this section.

Major Revisions to Sections

Revised Section 26 5600 (16520) - Exterior Lighting (Exterior Luminaires) This section has been almost entirely revised to include updated and expanded information. Part 1 includes new article "Administrative Requirements." Under Part 2, existing article "Luminaires" has been renamed "Luminaire Types" and a new article "Luminaires" has been added for general luminaire requirements. In addition, the article "Luminaire Types" has been expanded to include more luminaire types for editing. Part 3 includes new articles "Examination," "Preparation," and "Protection." The section also includes extensive new master note content, which users should find very helpful in editing.

Revised Section 26 5100 (16510) - Interior Lighting (Interior Luminaires) 

This section has been almost entirely revised to include updated and expanded information. Part 1 includes new articles "Administrative Requirements," "Delivery, Storage, and Protection," "Field Conditions," and "Warranty." Under Part 2, existing article "Lighting Fixture Types" has been renamed "Luminaire Types" and relocated above the existing article "General Requirements for Lighting Fixtures," which has been renamed to "Luminaires." In addition, the article "Luminaire Types" has been expanded to include several more luminaire types for editing. Part 3 includes new articles "Examination," "Preparation," "Closeout Activities," and "Protection." The section also includes extensive new master note content, which users should find very helpful in editing.