vav box price list. TROX Easy Product Finder Fast. vav box price list

 
 TROX Easy Product Finder Fastvav box price list  TM UT TALLAT TAT DT 2 TM UT TALLAT TAT DT Manual priceindustriesco PRODUCT OVERVIEW Fan Powered Constant Volume Units – FDC-1-X, FDC-G2We are the best manufacturers & suppliers of variable air volume box, vav box, air volume terminal units & variable air volume system in Dubai, Abu Dhabi, UAE, Iran, Yemen, Israel, Oman, Qatar, Syria & North Africa

Single Duct. IndiaMART > Industrial Coolers, Blowers & Fans > Air Blower. A terminal unit is also called a VAV box, VAV unit, or outlet box. 00 PDDR2222/2424 22 x 22 / 24 x 24 1681 $52. Step 2: Allow spare airflow capacity. Two or more VAV boxes can be controlled with one temperature sensor. Stainless Steel Heavy Duty Return Grille, ¾” Blade Spacing, 45° Deflection. 2. On the Unit screen, visually scan each input field and enter those fields that areSTRYKER VAV USER GUIDE 62-2030—01 2 1. For any variable air volume application out of the box. download the unit with the appropriate VAV programs and configuration settings for the unit. hotrodrob. The Vav box is used to measure the amount of water used by the customers and is read by the water utility company. ₹ 30,000. Series Fan VAV Box Dual Duct VAV Box1 3 Large Damper VAV Box2 Existing Damper Actuator Room Pressurization 1. Selection of VAV terminals with a close coupled, independent silencer is a complex process with unpredictable results. TROX is one of the world's leading manufacturers of VAV terminal units and offer a range of products to. 4. 00 EA Single Duct Terminal Unit (VAV) @ 6" inlet $240. 4% between 2022 and 2032, and at a CAGR of 3. mm. Opal Hvac Engineers Private Limited. 12 VAV-PRC011Y-EN Digit12,13,14,15—Controls (continued) DD87=UC210DDC-Basicplus-Local comparison of VAV boxes and should not be used to predict the NC level in the actual installed application. On the Unit screen, visually scan each input field and enter those fields that areVAV Diffusers 39 Air Terminals 39 Sheetmetal Ducts, Elbows & Fittings 40 - 41 Sheetmetal Accessories 42 - 43. A typical configuration for VAV would be to set the blower to hit a fixed static pressure target (say, 1 to 1. VAV Boxes Showing 1 - 6 of 6 Results DESV06 $200. Trane Variable Volume VariTrane Single-Duct VAV Terminal Unit Cooling 12". Trane makes a retrofit kit for a D series box that replaces those older style air valves with a jack shaft and new flow ring. galvanized steel. The following steps can be used to manually determine NC levels based upon Standard 885-2008 Appendix E: Step 1: Identify the VAV box discharge and radiated sound power. 00Asli Variable Air Volume (Vav) Terminal Units are volume flow rate controller for supply air on variable air volume system. 4. 3. w. L. VAV with Reheat. poly armor liner, no fan, 1-row coil, no fan motor, ductSTRYKER VAV USER GUIDE 62-2030—01 2 1. Damper leakage is less than 2% of nominal. Electronic VAV Retrofit Kit. What colors options are available of Vav Boxes Vav Boxes color variants available are: Bare Metallic. 2. Product search A-Z Find out quickly and simply. It has a wide product range of Air Distribution Products. ₹ 5,500. Call Us +966 9200 2 46 43 +966 5554 8 08 10. At the end of this presentation, you will be able to: 1. o. 00 50. The K factor is the point at which the size of the box, shown in inches, converges with the maximum airflow at 1"w. VAV boxes allow you to control the temperature of the room by controlling air volume, not air temperature alone. Ulta-Loc with NEMA 1 Enclosure & Bottom Access Door. for VAV pressure independent operation. VAV boxes provide a great solution for control of comfort with good. The founding principles of Price have never changed – business integrity, first-class service, innovation and a commitment to people. 25 m/s] air velocity through the inlet collar. Rectangular VAV terminal units for the extract air control in buildings with variable air volume systems, demanding acoustic requirements and low airflow velocities. work together in an integrated fashion. 00 EA $137. Powder Coated Aluminium Carrier Variable Air Volume Control System, For Industrial, Shape: Circular/Round. You can make this controller fully operational by using the MAP to select the appropriate VAV box application, thereby, saving field technicians' time by eliminating the provisioning workflow. Mumbai No. Buckley Associates, Inc. S hort Answer (using “rules of thumb”) V Max should be approximately 2/3’s to 3/4’s of VAV box V Nom. The Venturi Valve Upgrade kit enables you to replace outdated valve control systems on your schedule. Sound Attenuators. The Johnson Controls single duct units along with. VAV Boxes $200. The Johnson Controls single duct units along with. The VAV box will look something like this. (254 mm) 17 1/2 in. The sale of certain items may be geographically restricted. All prices are in Philippine Peso (Php) VAT inclusive. Spacing is determined by the largest air volume. 1. 18 - $0. VAV Box Abbreviation. The key companies profiled in this report on the VAV BOX. • Units are tested by ETL Intertek in accordance with AHRI Standards 880-2011,“Performance Rating of Air Terminals” And ASHRAE 130-2008,“Methods of Testing Air. O. Fibre-free insulation for VAVs in Healthcare to offer clean and silent operation. Construction: Casing: High quality galvanized steel sheet of 0. Five 24 VAC binary outputs field selectable between hot and common switching. A), Zallaq Sofitel resort ( Bahrain), command of military works ( Abu Dhabi schools), etc, are some of the few projects amongst many. For applications with large damper VAV boxes or existing damper actuators. 00. our warehouse plus applicable taxes. 2. Inlet sizes: 6”, 8”, 10”, 12” / Unit sizes: 2, 3, 4, 5. Multipoint crossflow sensor for accurate flow measurement. Saudi Arabia. Energy saving features described above contributes to saving in carbon footprint. Size VAV duct mains cost effectively 2. “Dual Maximum VAV Box Logic”, ASHRAE Journal, December 2012. Hahn Mason Air Systems are experts in the design and application of. Optional appurtenances: VAV damper Size tested is 6, 10 and 14, and certification applies to the following sizes: VAV terminal units that are AMCA 610 certified VAV Size K Model Number Example I: Pressure independent C: Constant Air Volume 5 35. AHRI 880 and ETL certified Lower CFM values VariTrane® Single Duct Terminal Units. FEATURES: Sinro VAV box can be used in low pressure or medium static pressure, single duct or double-duct system. Craig Company, Inc. /5. V b3-865. 13. As an option, these terminals can be equipped with hot-water heating coils or electric heaters. When configuring the EVCB controller K factor, 515 would be entered. Fast and error-proof RJ-45 thermostat connections. VAV with EcoShield Liner, NEMA 1 Enclosure & Bottom Access Door. August 19, 2009. The Titus ESV is unique as it incorporates many design features that increase performance, decrease service and. Minimum airflow limit for digital controls is based on min 0. Three styles of VAV boxes are available: standard, fan-powered, and reheat VAV. Buy It Now. Selection of VAV terminals with a close coupled, independent. Benefits of this approach include: Cost savings. VAV Boxes: In each zone, a VAV box is installed, typically in the ceiling or walls. — An actuator (For Lon: CVL4022AS-VAV1 and For Stryker BACnet VAV: CVB4022AS-VAV1) that mounts directly onto the VAV box damper shaftThe VAV and room automation solution for OEMs. g. GDB181. With multiple control options, construction options. List Price 1515. For configuration and maintenance, the service toolsTwo casings for easy design layout, flip for right or left hand mount. Seriesfan-poweredterminalunit(VSCF). 1/2" diameter plated steel drive shaft. techniques for designing high performing VAV systems at minimal cost. Application: VAV/CAV, position control. It provides commissioning support via the cloud to enhance the user experience and reduces project complexity and downtime while increasing connectivity, data transparency and cost-efficiency. 95. w. Price は空気分配、重要制御、騒音制御製品の供給において市場のリーダーです。このPDFでは、FDVシリーズのファンドライブベントレーターの特徴、仕様、選択方法などを詳しく紹介しています。FDVは高効率、低騒音、簡単なメンテナンスなどの利点を持ち、さまざまな空調システムに適用でき. The series fan units are specifically designed for quiet operation and they also offer improved space comfort. Products Price Air Distribution Terminal Units Single Duct Terminal Box SDV. The terminal unit controls are supplied by the controls contractor and either factory or field mounted and wired. VAV controller: Note: When the air supply to the VAV box is below 10°C (50°F), ensure that condensation on the VAV box, particularly on the damper shaft, does not enter the VAV controller. in. Can match with pneumatic Control, Analog Electronic Control or Direct Digital Control (DDC); 3. Share. Browse Hot Water Heating Coils in the R. TROX is one of the world's leading manufacturers of VAV terminal units and offer a range of products to meet most applications. Regardless, they serve the same purpose of heating the air in the box before it is pushed into the space. Made with FlippingBook - Online Brochure Maker. Table 2. Dylan Mechanical Construction Services, Inc Commission Agent: Harold Cullick, PE May 24, 2010 BT Collins High Tech RTS, Sacramento, CA. Contact Supplier. Item Model Size Unit Location D amper A ir Volume (cfm) Settings Reset Span VAV SPECIFICA TIONS 031600. - Available with electronic or direct digital control. 3. Variable Air Volume (VAV) is a type of heating, ventilating, and/or air-conditioning (HVAC) system. NECC brings a diverse offering of products and solutions to help our customers install and maintain their VAV systems at peak performance levels. 02 in. Pressure Independent VAV with Heater (Variable Air Volume Terminals) • Pressure Independent VAV Unit has one primary air inlet, one rectangular discharge outlet to the room and one rectangular bypass discharge outlet. 3. The airflow sensor should be able to generate this signal with only 400 toVAV Box DESV 12". V2RVg SDV/SDVQ Damper Actuator Controller Manufacturer Price Controls Price Controls Honeywell Honesm. This growing building “smarts” comes with big benefits – energy management tightens, tenant comfort becomes more commonplace, and cost savings grow. For information concerning controls, components, sequence of operation, etc. Model: DESV/DW. Applications The VMA1400 Series controllers can be configured for most dual duct VAV applications. 5. Seriesfan-poweredterminalunit(VSCF) Figure3. Contact Supplier Request a quote . No Interest if paid in full in 6 mo on $99+ with PayPal Credit*. ACCESSORIES A variety of additional accessories are offered to meet specific job requirements. Bhd No 2, Jalan Kenari 10, Bandar Puchong Jaya, 47100 Puchong, Selangor. efer to the control diagram supplied with each unit R for field wiring of thermostat and any accessories. Description. - Individually adjustable minimum and maximum air volume. RL/RM/RH with extended casing. Get VAV Boxes in Shivaji Nagar, Bengaluru, Karnataka at best price by Hi-Tech Electric & Refrigeration Co. Air handling units 2. Only available through manufacturers of VAV boxes. Cooling only in interior zones - reheat boxes optional. 00 EA Sell Price: $253. Analog Electronic Control Arrangement — The damper actuator responds to ch anges in the thermostat demand. View Profile View Forum Posts View Forum Threads. 00 EA DESV14 Sell Price: $333. 3. . The PIC controller can be provided pre-programmed with a sequence to fit your desired application. Fan-powered single ducted parallel with reheat - uses plenum air before using reheat for. Classic Enterprises. 00 EA Single Duct Terminal Unit (VAV) @ 14" inlet $353. If you need help selecting the best unit for your application, call us at 800-227-9800. Price Industries - Who We Are The founding principles of Price have never changed – business integrity, first-class service, innovation and a commitment to people. Box Area [AREA] 0. From standard grilles and registers, to its architectural line of Formations® linear slot diffusers, along with a newly released series of displacement diffusers, METALAIRE has the air devices to meet every need. Fan-powered VAV units feature this same design, but add a fan. Another option is to use a modulating concentric type damper with air flow measuring capability. Based on the graph, we can see that the maximum airflow for a 6" VAV box is 515CFM. Rotary actuator fail-safe for VRU, 6 Nm, AC/DC 24 V, 4 s, IP54. Also find Variable Air Volume System price list | ID: 22422561655Stryker LON VAV: CVL4022AS-VAV1 and CVL4024NS-VAV1 only and For Stryker BACnet VAV: CVB4022AS-VAV1 and CVB4024NS-VAV1 only). Single Duct terminals are the fundamental building blocks for Variable Air Volume (VAV) systems. VAV. View Profile. Documents Details. Variable Air Volume Boxes Ask Price. 13-NOM3 (708) SAFETY SYMBOLS The following symbols are used in this document to alert the reader to areas of potential. 03 inch W. Traditional air systems are a constant air system, with only control on the air temperature. TermS All orders shall be cash, certified check or credit card. We’re here to help you. Used for calibration. As the room temperature increases, the room thermostat modu-lates the room damper open and the bypass damper is closed. If the damper for a 90° box closes CW, rotate the coupler to the CW mechanical limit. B. Let’s look at one type of. The most common include: Single duct terminal VAV box – the simplest and most common VAV box, shown in Figures 1 and 2, can be configured as cooling-only or with reheating. 100–4100 CFM PSC or EC motor options AHRI 880 and ETL certified See Product Details Johnson Controls Single Duct (TSS) All the benefits of single duct units while performing at extremely low sound levels. Today’s VAV boxes and VAV valves require very much lower pressures to operate them with 20Pa being typical, which would show a significant energy saving over the original units. , please refer to the documentation provided by the controls contractor. Rotary actuator for VRU, 20 Nm, AC/DC 24 V, 120 s, IP54. Volume Control damper is widely used in heating, ventilation and air-conditioning applications (HVAC Damper) in order to maintain or control the air volume inside the duct. • Mount the controller on a hard, even surface whenever possible. , please refer to the documentation provided by the controls contractor. (1127 mm)The Variable Volume Circular type RVP-C provides volume control of extract and supply air systems across a wide range of sizes and volumes to suit any applications. As the primary air damper closes, the bypass port damper opens and vice versa so that a required volume of air is delivered by the air terminal to the conditioned zone, but in varying amounts of air volumes are delivered. Shaft Compatible With Most Actuators. The VAV box will look something like this. Price eliminates the guess work. Adjustable fan speed control. Clause 54” List Price % Discount NYS Net Price BAS Integration PC1251 (Trane) Trane Bridge 16" DIN Rail Encl Solid Door, 120 VAC X13651618010 1 $ 704. S. Key topics critical to optimal VAV design and performance are addressed in the following chapters: 1) early design issues, 2) zone issues, 3) VAV box selection, 4) duct design, 5) supply air temperature reset, 5) fan type, size and control, 6) coils and filters, and 7) outdoor air, return air and exhaust air. 2537 King Abdullah Ibn Abdul Aziz Rd. Aircons Air. JOHNSON CONTROLS 3 FORM 130. 1. Trane VAV units are made with either pneumatic or microprocessor controls (DDC/VAV). Digital Single Duct Terminal. $539. The latest edition includes our latest product offering including a new section on VAV Diffusers, as well as the products you have come to know and trust across nine other product categories. Comfort Calculator. Sell. - Used for VAV or constant volume application. Pickup Gain - K Factor [K] 0. For example: If there are 2 air handlers at 6 man hours each, that equals 12 man hours. NORWAY COMPLETE PRODUCT OVERVIEW POSTER. VAV terminal units are fitted with automatic controls that are either pressure-dependent or pressure-independent (ASHRAE. CAV is the older of the two options, leveraging a centralized duct system and compressor to supply constant air flow to different zones. Following extensive research on VAV systems involving design engineers and contractors, we have produced a range of fan powered terminal units. You can configure and select multiple boxes in one application. 5 V750-07-I and V750-07-CTitus brings both accuracy and flexibility to the variable air volume (VAV) market with T3SQ VAV diffusers. 00 - $379. Add to Compare. Product categories. zinc coated steel housing, mechanically sealed and gasketed, leak resistant construction. The simple design, relatively low cost, and high level of performance flexibility make rectangular silencers a reliable and cost-effective choice. Due to this VAV box, this system is called the VAV system. VAV box or VAV terminal is kept on the branch duct which is coming from the main branch. The air-distribution equipment is thus given an important task. joey791. The RDV air volume control valve is used to control exhaust air in general room exhaust applications. 8 mm. VAV Air Terminal Units Sort By: Featured Items Newest Items Best Selling A to Z Z to A By Review Price: Ascending Price: Descending Products Per Page: 8 12 16 20 40 100METALAIRE is the flagship brand of Metal Industries Inc. These dampers facilitate the air flow to each zone and each room to be controlled during testing & commissioning. Bandra East, Palghar, Dist. The controller keeps track of the actual position of the damper (0% to 100% open) and calibrates itself every 24 hours. Mounts on EN 50 022 - 35 X 15 DIN rail that is included in the VAV unit control box when the UC400 is factory mounted. You can make this controller fully operational by using the MAP to select the appropriate VAV box application, thereby, saving field technicians' time by eliminating the provisioning workflow. Stainless steel construction is available when corrosives and particulates are present in the airstream. [7. November2022 VAV-PRC011AA-EN ProductCatalog VariTrane™Products SingleDuct/DualDuctUnits VCC,VCW,VCE,VDD EA RA OA supplyPA fan cooling coil variable-speed drive thermostat VAV box SA Variable-Air-Volume (VAV) System ©2022Trane VAV-PRC011AA-EN IntroductionA VAV box is essentially a rectangular sheet metal box with a butterfly damper/blade device inside that moves back and forth to regulate the amount of conditioned air flowing into a space. An additional program, called R-Seller, allows an operator to have a live person remotely help verify age. Field of application: technical building equipment, HVAC systems. Contact Hahn-Mason Air Systems today at (704)-523-5000. 99 No Absolute value of offset in percent. More sophisticated transducers and computer software have achieved a more precise control of air volumes. The MQTHI5 unit sets the standard in the industry for construction, performance, and quality. Single Duct Boxes - 80 to 8,000 CFM. Lower duct static pressure is needed for the modem VAV box. Johnson Controls Pneumatic VAV. The following steps will be illustrated on the next two. (511 mm) 44 3/8 in. These controllers provide many options and advanced system features that allow state-of-the-art commercial building control. 3. Heavy gauge damper with polyure­thane gasket rated for up to 1. View Product Details. Spacing is determined by the largest air volume. Streamlining Your Workflow with the Price Engineer Toolkit. Price electric coils are factory mounted, ETL listed to meet electrical safety standards, and comply with dual designation CSA 236/UL 1995. Zinc coated steel casing, mechanically sealed, low leakage construction. 7 – 7 m/s; High control accuracy, even in case of unfavourable upstream conditionsTH500 SIN DUT SINGLE DUCT TH–4 2020 Metal Industries For complete product specifications and submittal data, visit us at Unit Size Inlet Size A Width Height Unit wt. ft. The RDV air volume control valve is used to control exhaust air in general room exhaust applications. VAV Equipment Selection: Single Duct Terminal Units. The ESV-VP valve package is assembled in a manufacturing setting giving you repeatable and reliable quality that otherwise may be difficult to replicate in a field setting. + Price PIC controls as well as a variety of third party controls. The most of important drawback is that VAV. We also undertake sound attenuator. Overview. 40% between 2022, the vav box market is projected to grow at a CAGR of 3. Also find. Programming is. A box with a fan (series or parallel)is more of a mixing box because it mixes plenum air with supply air from the air handler. Their primary function is to regulate airflow to a zone, in response to zone temperature requirements. 50 Single Duct VAV (TSS) Critical in today’s building environments is the need to place significant emphasis upon the occupants comfort and indoor acoustics. Do not mount this directly after the main fan, as the transducerWebSelect VAV Selection/Pricing Quick Start User Guide Page 4 Step 2 - Selecting the First VAV Box in a Project Note: The program selects, configures and prices VAV boxes all at once so when you price a box, the engineering rules are checked at the same time. As the temperature raises the VAV damper opens to send a designed amount of airflow to the space/ or room. 00 USD. Only available through manufacturers of VAV boxes. New Delhi, Delhi. Limitations of traditional airflow controls. single duct vav - sdv/sdve models pressure independent single duct vav - sdv/sdve models performance data 50 100 150 250 150 250 450 600 200 500 800 1100 300 800 1200 1900 450WebSelect VAV Selection/Pricing Quick Start User Guide Page 4 Step 2 - Selecting the First VAV Box in a Project Note: The program selects, configures and prices VAV boxes all at once so when you price a box, the engineering rules are checked at the same time. RDV. Price: US $699. Electrical vendor at ceiling) VAV Box shall be equipped with acoustic with 25 mm thick fibre glass of minimum 32 kg/m density or 10mm. Maximum airflow limit is based on max 1. For information on these accessories please refer to the Terminal Units Accessories catalog. Single Duct VAV Boxes Single Duct Terminal Units 14 HGCOIL 1 or 2 Row Hot Water Coil SDV5 VAV Single Duct Box HW Coil Standard Construction + 22 gauge galvanize. ·. Norway PRODUCT OVERVIEW. Overview. VAV Box Types Fan Powered and Shut Off. The Price Intelligent Controller is also expandable for BACnet networking capabilities, and for Pressure Independent control. TEC Terminal Box (VAV) Controller The TEC Terminal Box Controller provides high performance Direct Digital Control (DDC) of pressure-independent, variable-air-volume zone-level routines. You need about 16”-18” of clearance from the inlet of the VAV to fit the retrofit kit in. ML6161 actuators control dampers in VAV terminal units and mounting on ball valves. Learn how to install, operate, and troubleshoot the VariTrane VAV terminal units with this comprehensive installation manual. buckleyonline. Bureau of Labor Statistics, Average energy prices for the United States, regions, census divisions, and selected metropolitan. In the vertical direction, the VAV box can require up to 18", which can be a problem if above ceiling heights are relatively small. Air Side; Prev. aeVolumetric fl ow controllers Control function VAV/CAV and Open-Loop V nom 1) Application specifi c nominal volumetric fl ow setting, dependent upon VAV box parameters. TROX is one of the world’s leading manufacturers of these units. VAV pressure independent operation. TROX Easy Product Finder Fast. Power cable – Wikipedia, the free encyclopedia. If the damper for a 90° box closes CCW, rotate the coupler to the CCW mechanical limit. Skip to quiz! FCUs Recall that a fan coil unit is a type of AHU that recirculates indoor air only. Pizza shipping box packaging carton cheap price biodegradable 10 12 13 14 inch pizza packing delivery box supplier for pizza. 1. Splitters/Baffles: “Bull-Nose” construction using high quality perforated galvanized steel sheet of 0. Number of VAV boxes; Number of coils; Labor costs. , please refer to the documentation provided by the controls contractor. All welded joints are rust proofed by zinc paint coating. 13-NOM3 (708) MODELS TCS, TCL, TVS & TVL LD13847. 00. The terminal unit controls are supplied by the controls contractor and either factory or field mounted and wired. 33RL-SS. in. Our company holds immense experience in this domain and is indulged in presenting a wide assortment of VAV Boxes to our customers. 02 in. Compare ducted vs. Each controller is programmable and configurable using the Niagara Framework® software. Air distribution products include grilles, registers, diffusers and air terminal units (also called VAV boxes). , please refer to the documentation provided by the controls contractor. Fresh, outdoor air enters the energy recovery unit and is pretreated before entering the heating and cooling equipment. (1127 mm)江森自控Titus®VAV变风量末端. Registers, Grilles, Diffusers & VAV Boxes Snap Lock Pipe Flexible Duct Fire Dampers Access Doors Louvers Type B Gas Vent Exhaust Fans Roof Products Spiral DuctAIR MASTER EQUIPMENTS EMIRATES LLC P. Unlike most other air distribution systems, VAV systems use flow. On the Unit screen, scan each input field and enter the fields that are blank, and change default field values that appear. Receiving InspectionVAV terminal units it's not just about superficial aesthetics , it's about a perfect unison of form , function and reliability WB Air Techniques Pte Ltd Block 7 Toa Payoh Industrial Park #01-1245 Singapore 319059 tel : 65 6252-6707 fax : 65 6253-4435 email wbsales@singnet. 6 VAV-SVX08V-EN ModelNumbers Single-DuctVAVUnits Digit1,2—UnitType VC=VariTrane™Single—Duct Digit3—Reheat C=CoolingOnly E=ElectricHeat W=HotWaterHeat Digit4—DevelopmentSequence F=Sixth Digit5,6—PrimaryAirValve 04=4"inlet(225cfm) 05=5"inlet(350cfm) 06=6"inlet(500cfm) 08=8"inlet(900cfm)VAV Box. Available with standard PSC or high efficiency ECM brushless DC motor. Overview. When these numbers have been defined, the labor costs will be determined by a calculation of the number of man hours needed to clean each element multiplied by the hourly rate. high quality galvanized steel sheet. g. Johnson Controls single duct units offer the typical benefits provided by single duct units while performing at extremely low sound levels. Variable Air Volume (VAV) is a type of heating, ventilating, and/or air-conditioning (HVAC) system. Fan-less or cooling-only VAV boxes are thermostat-controlled assemblies with an integral damper. g. The T3SQ modulates the air volume delivered to a zone to accurately control cooling and heating conditions. 8 W/sq. [1] [2] The advantages of VAV systems over constant-volume systems include.