Product Catalog
VariTrane™ Products
Parallel and Series Fan-Powered
VPCF, VPWF, VPEF, VSCF, VSWF, VSEF,
LPCF, LPWF, LPEF, LSCF, LSWF, LSEF
Variable-Air-Volume (VAV) System
EA |
|
RA |
OA |
supply |
PA |
|
fan |
|
|
cooling |
VAV |
|
coil |
box |
|
variable- |
|
|
speed drive |
|
|
thermostat |
|
|
|
SA |
July 2013 |
VAV-PRC012-EN |
Introduction
Fan-powered units offer energy savings due to intermittent fan control.The fan energizes only in heating mode when the space needs heat. Additional energy savings are obtained by using warm plenum air for free reheat. Motor heat is never wasted in parallel units.They are an excellent choice when minimal zone heating is needed.
Figure 1. Parallel fan-powered terminal unit (L) & series fan-powered terminal units (R)
Figure 2. Low height series: LSCF (L) & low height series: LSWF (R)
Figure 3. Low height series: LSEF (L) & low height parallel: LPCF (R)
Figure 4. Low height parallel: LPWF (L) & low height parallel: LPEF (R)
Revision Summary
VAV-PRC012-EN (16 Jul 2013). Updated proportional water valve design.
VAV-PRC012-EN (27 June 2013). Updated controls information. Updated dimensions for units with attenuators.
Trademarks
Earthwise, VariTrane, VariTrac,Trane and theTrane logo are trademarks ofTrane in the United States and other countries. All trademarks referenced in this document are the trademarks of their respective owners.
BACnet is a registered trademark of American Society of Heating, Refrigerating and AirConditioning Engineers (ASHRAE); LONMARK and LonTalk are registered trademarks of Echelon Corporation.
© 2013Trane All rights reserved |
VAV-PRC012-EN |
Table of Contents
Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Agency Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Model Number Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Parallel Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Series Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Low Height Parallel Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . 47
Low Height Series Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . . 53
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Parallel Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Series Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Low Height Parallel Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . 68
Low Height Series Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . . 70
Acoustics Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Parallel Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Series Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Low Height Parallel Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . 92
Low Height Series Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . . 98
Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Parallel Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Series Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Low Height Parallel Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . 123
Low Height Series Fan-Powered Terminal Units . . . . . . . . . . . . . . . . . . . . 134
Mechanical Specifications: Fan-Powered . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
DDC Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Control Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
DDC Remote Heat Control Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Tracer™ UC400 and UC210 Programmable BACnet Controllers . . . . . . . 152
Trane DDC VAV Controller Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Flow Tracking Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Tracer™ Programmable BACnet Controller — Unit Control Module . . . . 158
Trane LonMark DDC VAV Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Trane DDC VAV Controller Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
VAV-PRC012-EN |
3 |
Flow Tracking Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
165 |
LonMark™ Direct Digital Controller—Unit Control Module . . . . . . . . . . . |
166 |
Direct Digital Controller—Unit Control Module . . . . . . . . . . . . . . . . . . . . . |
169 |
Wireless Comm Interface (WCI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
170 |
Wireless Receiver/Wireless Zone Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . |
172 |
DDC Zone Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
173 |
CO2 Wall Sensor and Duct CO2 Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
174 |
DDC Zone Sensor with LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
176 |
Zone Occupancy Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
177 |
Factory or Field Wired Auxiliary Temperature Sensor . . . . . . . . . . . . . . . |
178 |
Control Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
178 |
Two-Position Water Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
179 |
Proportional Water Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
180 |
Differential Pressure Transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
181 |
Transformers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
182 |
Trane Actuator – 90 Second at 60 Hz Drive Time . . . . . . . . . . . . . . . . . . . . |
183 |
Belimo Actuator – 95 Second Drive Time . . . . . . . . . . . . . . . . . . . . . . . . . . |
184 |
Trane Spring Return Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
185 |
VariTrane DDC Retrofit Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
186 |
Retrofit Kit Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
186 |
Silicon-Controlled Rectifier (SCR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
187 |
Pneumatic Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
188 |
Controls Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
203 |
Application Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
VAV System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208 Parallel vs. Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211 Low-Temperature Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Energy Savings & System Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216 Control Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218 Flow Measurement and Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 Reheat Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224 Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Duct Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 Best Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231 Unit Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232 Additional VAV System and Product References . . . . . . . . . . . . . . . . . . . . 233
4 |
VAV-PRC012-EN |
VariTrane™– VAV Leadership
VariTrane variable-air-volume (VAV) units lead the industry in quality and reliability and are designed to meet the specific needs of today’s applications.This generation of VariTrane units builds upon the history of quality and reliability and expands the products into the most complete VAV offering in the industry.
Parallel Fan-powered units offer energy savings due to intermittent fan control.The fan energizes only in heating mode when the space needs heat.Additional energy savings are obtained by using warm plenum air for free reheat. Motor heat is never wasted in parallel units.They are an excellent choice when minimal zone heating is needed.
Series fan-powered units have fans which are always energized in occupied mode.They are common in applications such as conference rooms, cafeterias, etc., that desire constant airflow rates at all conditions.
Low-height parallel units provide the energy savings of an intermittent fan with the flexibility of an 11"–11.5” casing height.This is a good choice for tight plenum spaces.
Low-height series units have been used for years in projects with strict plenum height requirements. Units
are available in 11.0" height.
Energy Efficient Earthwise™ Systems
Figure 5. Rooftop VAV (office building)
A significant consumer of energy in commercial buildings is heating and air conditioning. One of the most energy-efficient HVAC solutions is theVAV system.This inherent system efficiency, along with high-quality, affordable DDC controls, has steadily increased demand for VAV systems over the years. VAV systems save significant energy, are able to deliver the required amount of ventilation air, and provide reliable occupant comfort.
Energy saving features must go beyond a simpleVAV unit to incorporateVAV unit level and system level control strategies like:
•Ventilation Optimization-Combines demand-controlled ventilation (using either a time-of-day schedule, an occupancy sensor, or a carbon dioxide sensor) at the zone level with ventilation reset at the system level to deliver the required amount of outdoor air to each zone, while minimizing costly over-ventilation.
VAV-PRC012-EN |
5 |
Features and Benefits
•Fan Pressure Optimizationreduces supply fan energy by as much as 40% by intelligently reducing the pressure in the air distribution system to the lowest possible level without impacting occupant comfort.
•Night setback reduces energy consumption during unoccupied periods by raising or lowering space temperature setpoints.
•Supply AirTemperature Reset-reduces overall system energy use (balancing reduced cooling and reheat energy with increased fan energy) by raising the supply air temperature at part load, while avoiding elevated space humidity levels.
•Electrically Commutated Motors (ECM) improve the efficiency of fan-powered VAV units.
•LowTemperature Air Distribution can decrease overall system energy use by reducing airflows and the fan energy needed to move that air through the system.
To determine the potential energy savings a VAV system can bring to your applications,Trane offers energy-modeling software like System Analyzer™ andTRACE 700®. WhenTRACE™ was introduced into the HVAC industry in 1972, the HVAC design and analysis program was the first of its kind and quickly became a defacto industry standard. It continues to grow with the industry meeting requirements for ASHRAE Standard 140, ASHRAE 90.1, and the LEED® Green Building Rating System and has now been approved by the IRS to certify energy savings for building owners. Contact your localTrane Sales Engineer for additional information.
Control Flexibility—Trane factory installs more VAV controllers than any other manufacturer in the industry. In addition to Trane DDC controls and simple factory-mounting
of non-Trane VAV controllers, Trane now offers a LonMark™ controller that is completely factory-commissioned to maximize installation quality and system reliability. Labor savings are maximized with Trane factory-commissioned controllers.
Accurate Flow Ring—Housed and recessed within the air valve to provide flow ring handling/shipping protection. The patented flow ring provides unmatched airflow measurement accuracy.
Service Friendly:
*Internal shaft visible through control box cover sight hole for blade orientation verification.
*Same-side NEC jumpback clearance— provides all highand low-voltage components on the same side
to minimize field labor.
*SQ fan-powered units have improved accessability to internal components. Sliding panels are standard which improve safety and allow servicing with a single technician.
Rugged Air Valve—Trane air valves are heavy gage steel with a continuously welded seam to limit inlet deformation. This provides consistent and repeatable airflow across
the flow ring with performance you can count on.
Technologically Advanced " Units— New super-quiet (S fan/motor/wheel assemblies engineered as an air deliver system to provide the most efficient design available in industry. For quiet comfort y can trust, rely onTrane SQ u
Tough Interlocking Panels— Rug and rigidity are assured withTra patent-pending interlocking pan
Superior Metal Encapsulated VariTrane Units are complete encapsulated edges to arrest fibers and prevent erosion in
Full Range of Insulation—Whether seeking optimal acoustical perf or cleanability,Trane has a complete line of insulation options, incl double-wall, matte-faced, foil-faced, closed cell, etc.
6 |
VAV-PRC012-EN |
Features and Benefits
Construction
UL-listed products—
Safety and reliability are vital in commercial construction. All VariTrane units are completely listed in accordance with UL -1995 as terminal units.This listing includes the VAV terminal with electric heaters. Additionally, all insulation materials pass UL 25/50 smoke and flame safety standards.
AHRI Certified Performance—
All VariTrane units are AHRI certified. AHRI 880 guarantees the pressure drop, flow performance, and acoustical performance provided is reliable and has been tested in accordance with industry accepted standards. AHRI 885 uses AHRI 880 performance and applies accepted industry methods to estimate expected “NC” sound levels within the occupied space.
Casing Design—
Interlocking Panels—VariTrane products are manufactured in the most state-of-the-art VAV facility in the world.The patent-pending interlocking panels are designed using integral I-beam construction technology.This limits deformation and creates tremendous product rigidity. An additional benefit is a smooth unit exterior with few exposed screws—ideal for exposed ceiling applications. VariTrane units are designed for use in systems that operate up to 5" w.c. of inlet pressure.
Metal Encapsulated Edges—AllVariTrane units are complete with encapsulated edges to arrest cut fibers and prevent insulation erosion into the airstream.This is the standard of care in applications concerned with fiberglass erosion or projects with either double-wall or externally wrapped duct work.
TheTrane Air Valve—is at the heart of VariTrane terminal units.This is where airflow is measured and controlled. Repeatability and ruggedness is vital.VariTrane products are the most rugged and reliable available.
18-gage Cylinder—limits deformation or damage during shipment and job site handling, and provides even airflow distribution across the flow ring for unmatched airflow measurement accuracy.
Continuously Welded Seam — an automated weld process creates the highest quality continuous seam, which is “right” every time.The welded seam improves air valve rigidity and creates consistent and repeatable airflow across the flow measurement device.The result is a truly round cylinder every time, with no flat spots caused by lower quality crimping and riviting technologies.
Flow Ring—TheTrane flow ring is time tested to perform under the most demanding conditions. Additionally,Trane’s patented flow ring is recessed within the air valve cylinder to reduce the potential for damage during job site handling and installation.
VAV-PRC012-EN |
7 |
Features and Benefits
External Shaft—The simple design provides controller flexibility and is designed to facilitate actuator field replacement.
Position Indicator—The position indicator shows current air valve position to aid in system commissioning. Many times this can be seen from the floor without climbing a ladder.
ExternalActuator—This feature increases serviceability, control system compatibility, and actuator clutch access for simplified commissioning.
Indoor Air Quality (IAQ) Features
The oil embargo of the early 1970s created an energy crisis, which resulted in tighter buildings, and reduced ventilation rates. A fallout issue of tighter building construction was poor indoor air quality.This heightened IAQ awareness. IAQ issues have been featured in publications from the smallest towns to the largest cities. System design should consider applicable ventilation and IAQ standards.(See your localTrane Sales Engineer or visit www.trane.com for additional information). Good indoor air quality results from units and systems which:
•Provide the required amount of ventilation air to each zone during all operating conditions
•Limit particulates from entering occupied spaces
•Allow proper access for periodic cleaning.
Note: Access made easy on new VariTrane units, as shown on this Series Fan-Powered unit.
VariTrane units are designed with simplified access and a full line of insulation options including:
Matte-faced—Typical industry standard with reduced first cost.
Closed-cell—This insulation has an R-value and performance equivalent to matte-faced insulation. The main difference is the reduction of water vapor transmission. Closed-cell is designed for use in installations with a high chance of water formation. (It has been used to coat the exterior of chiller evaporator barrels for many years.)
Foil-faced—A fiberglass insulation with a thin aluminum coating on the air stream side to prevent fibers from becoming airborne.The aluminum lining is acceptable for many applications, however it is not as rugged as double-wall
Double-wall—Premium insulation often used in many health care applications with insulation locked between metal liners.This eliminates the possibility for insulation entering the airstream and allows for unit interior wipe-down as needed.
VariTrane VAV units are the most prepared IAQ units in the industry.
The end result is a reliable product designed for peak performance, regardless of job site conditions or handling.
8 |
VAV-PRC012-EN |
Features and Benefits
Tracer™ Building Automation System
Tracer Building Automation System assures comfort within your building. Building controls have a bigger job description than they did a few years ago. It’s no longer enough to control heating and cooling systems and equipment. Sophisticated buildings require smarter technology that will carry into the future. Tracer™ controls provide the technology platform – mobile, easy-to-use, cloud-based, scalable and open - for the next generation of data-driven, technology-enabled services that are creating high performance buildings. With aTraneTracer Building Automation System, you’ll:
•Reduce operating costs through energy management strategies
•Consistently provide occupant comfort
•Enjoy reliable operation with standard, pre-engineered and pretested applications
•Easily troubleshoot and monitor either on site or from a remote location
•Reduce installation time and simplify troubleshooting
Whether factory-mounted or field-installed,Trane offers a wide range of controllers to suit virtually any application.These units are compatible with a variety of building types and can be used for new construction or renovation.Through extensive usability testing internally and with building operators, we’ve designed our controls for real world ease of use.
(Additional control options and sequence-of-operations are located in the “Controls” section.)
Trane VAV UCM DDC Controller
DDC (communicating electronic)—DDC controllers are today’s industry standard. DDC controllers provide system-level data used to optimize overall SYSTEM performance. Variables such as occupied/unoccupied, minimum and maximum cfm and temperature, valve position, ventilation fraction, etc. are available on a simple twistedshielded wire pair. For additional information, see “Industry Issues: Energy Efficiency”.
Note: One of many Trane DDC Control Options which are factory-installed, wired, calibrated, and fully tested before shipment.
Trane DDC controllers provideTrane-designed solid-state electronics intended specifically for VAV temperature control in space comfort applications. DDC control capabilities include:
•Pressure-independent (PI) operation—Provides airflow required by the room thermostat to maintain occupant comfort.The controller automatically adjusts valve position to maintain required airflow. Minimum and maximum airflow is factory-set and field-adjustable.
•Factory-set airflow and temperature setpoints
•Most advanced system integration in the industry.
Tracer VV550 LonTalk™ Controllers
LonTalk™ Controller
Trane now offers a full line of LonTalk™ controllers designed for simple integration into ANY system which can communicate via the LonMark Space Comfort Control (SCC) protocol.These controllers are also completely factory-commissioned.
VAV-PRC012-EN |
9 |
Features and Benefits
Tracer BACnet™ Controllers
Trane now offers a full line of BACnet controllers designed for simple integration into any system which can communicate via the BACnet protocol.These controllers are factory-commissioned and shipped ready to be installed.
UC210 BACnet Controller |
UC400 BACnet Controller |
Trane Wireless Comm Interface (WCI)
WCI controller
Provides wireless communication between theTracer SC,
Tracer Unit Controllers, and BACnet™ Communication
Interface (BCI) modules.
TheTrane WCI is the perfect alternative toTrane’s BACnet wired communication links (for example – Comm links between aTracer SC andTracer UC400).
Eliminating communication wire used between terminal products, zone sensors, and system controllers has substantial benefits.
•Installation time and associated risks are reduced.
•Projects are completed with fewer disruptions.
•Future re-configurations, expansions, and upgrades are easier and more cost effective.
Trane Wireless Zone Sensor
Wireless Zone Sensor
Provides wireless communication between the Unit Controller and the zone sensor.This is an alterntive to the wired zone sensor when access and routing of communicaiton cable is an issue. It also allows very flexible mounting and relocation of zone sensors
10 |
VAV-PRC012-EN |
Features and Benefits
Pneumatic Controller
Pneumatic Controller
Pneumatic—Pneumatic controllers provide proven reliability and performance. A full line of options provide:
• Highest quality PVR available, which maximizes zone temperature control.
Pressure-independent operation
• AllVariTrane pneumatic controllers use the patented flow sensor input to provide the most accurate performance available.
Binary Input Controller
Integration Options (Interfacing with other control systems) - Trane offers three ways to interface with other control systems.
1.UseTrane LonMark, factory-commissioned VAV controllers
2.UseTrane Binary Input Controller (BIC). BIC allows system control through binary logic.This means that a control system on an existing campus, or those seeking “Analog noncommunicating control” can control aTrane DDCVAV unit via basic binary contact closures, like relays, etc.This can be a cost effective interface option where a fullTrane DDC VAV System is not available.
3.UseTrane BACnet™ factory-commissioned VAV controllers.
Factory-installed vs. Factory-commissioned:
The terms factory-installed and factory-commissioned are often used interchangeably.Trane takes great pride in being the industry leader in factory-commissioned DDC controllers. Table differentiates these concepts.
Factory-commissioned controllers provide the highest quality and most reliable units for yourVAV system. Additional testing verifies proper unit operation including occupied/unoccupied airflow, temperature setpoints, communication link functionality, and output device functionality.The benefits of factory-commissioning are standard on VariTrane terminal units withTrane DDC controls.This means that factory-commissioned quality on VariTrane VAV units is now available on ANY manufacturer’s control system that can communicate using the LonMark Space Comfort Control (SCC) protocol. (See Controls section for complete listing of variables which are communicated.
Table 1. Factory-installed vs. factory-commissioned
|
Factory-installed |
Factory-commissioned |
|
|
|
Transformer installed (option) |
X |
X |
|
|
|
Wires terminated in reliable/consistent setting |
X |
X |
|
|
|
Controller mounted |
X |
X |
|
|
|
Electric heat contactors and fan relay wired |
X |
X |
|
|
|
VAV-PRC012-EN |
11 |
Features and Benefits
Table 1. Factory-installed vs. factory-commissioned
|
Factory-installed |
Factory-commissioned |
|
|
|
Testing of electric heat contactors and fan relay |
|
X |
|
|
|
Controller addressing and associated testing |
|
X |
|
|
|
Minimum & Maximum airflows settings (occupied/unoccupied) |
|
X |
|
|
|
Minimum & Maximum temperature setpoints (occupied/unoccupied) |
|
X |
|
|
|
Minimum ventilation requirements |
|
X |
|
|
|
Thumbwheel enable/disable |
|
X |
|
|
|
Heating offset |
|
X |
|
|
|
Wireless communications modules (WCI) |
X |
X |
|
|
|
Wireless zone sensor |
X |
|
|
|
|
Indoor Air Quality Management During Construction
LEED wrap option is a pressure sensitive covering that prevents contamination of the VAV box during the construction phase. It is utilized to seal all openings without constraining the installation process.
Trane VAV Systems - Proven Performance
Trane is the industry leader in VAV systems, including factory-commissioned controls and integration with other control systems.This leadership began with customers seeking the most reliable VAV products in the industry.The solution was factory-commissioned controls (see Factory-installed vs. Factory-commissioned). Since then, it has blossomed to include optimized system control strategies.
Control strategies are often made more complicated than necessary. VariTrane DDC controls simplify control strategies by pre-engineering control logic and sequencing into the controller.This information is available via a twisted-shielded wire pair, and accessible via aTraneTracer™ SC building automation system. Data is easily accessed via a computer workstation.
Optimized system control strategies, such as ventilation optimization, fan-pressure optimization, and optimal start/stop, are pre-engineered in VariTrane™ unit-level DDC controllers and theTracer SC building automation system.
This allows aTrane VAV system to meet or exceed the latest ASHRAE 90.1 Energy Efficiency standards. Pre-engineered controls allow consistent, high quality installations which are very repeatable.The end result is PROVEN control strategies you can rely on to perform. For more information on these and other control strategies, contact your localTrane Sales Office, or visit www.trane.com.
Purchasing VAV controllers and VAV hardware from a single manufacturer provides a single contact for all HVAC system related questions.
12 |
VAV-PRC012-EN |
There are numerous regulations and standards in the industry that determine the construction and performance parameters for VAV terminal units. Some of the more important of those standards and regulations are listed below, along with a brief description of what each one addresses.
American Society of Heating, Refrigerating and Air-conditioning Engineers
(ASHRAE) - 41.1
ASHRAE - 41.2
ASHRAE - 41.3
These standards specify methods for temperature measurement (41.1), laboratory airflow measurement (41.2), and pressure measurement (41.3).While none of these standards specifically discusses VAV air terminals, they discuss topics that are aspects of terminal box systems. Therefore, some engineers will include these standards in their specifications as a primer on accepted measurement techniques.
ASHRAE - 62
This standard specifies the minimum ventilation rates and indoor air quality that are acceptable for occupied spaces.
ASHRAE - 111
This standard calls out procedures to be followed for testing and balancing HVAC systems. It includes descriptions of the equipment used, procedures followed, and field changes that must be made when a system is balanced.
Air-Conditioning, Heating and Refrigeration Institute (AHRI)
AHRI 880
This standard sets forth classifications, performance testing requirements, and test results reporting requirements for air terminal units.The standard contains very detailed procedures that are to be followed for the testing and certification program associated with this standard.This is one of the most commonly referenced standards in the VAV terminal unit industry.The AHRI-880 certification program is designed to police the accuracy of documented performance for terminal units.The certification program requires a sampling of at least four units be tested annually.The tested units are chosen at random by AHRI and sent to an independent laboratory for the testing. The performance is tested at one specific operating condition.The operating characteristics tested include discharge and radiated sound power (for the damper and, in the case of fan-powered boxes, the fan), wide-open damper pressure drop, and fan motor amp draw. VariTrane terminal units are certified according to AHRI-880.
AHRI 885
This document provides a procedure to estimate sound pressure levels in an occupied space.The standard accounts for the amount of sound pressure in the space due to the VAV air terminal, diffusers and their connecting low pressure ductwork. While sound generated from the central system fan and ductwork may be a significant factor in determining the sound pressure level in the room, this standard does not address those factors. It focuses solely on theVAV terminal and items downstream of it.This standard is related to AHRI-880 by using sound power determined using AHRI-880 methodology as a starting point for the AHRI-885 procedure.
Underwriter’s Laboratory (UL) 1995
Underwriter’s Laboratory is an independent testing agency that examines products and determines if those products meet safety requirements. Equipment manufacturers strive to meet UL guidelines and obtain listing and classifications for their products because customers recognize UL approval as a measure of a safely designed product. VariTrane VAV air terminals are listed per UL-1995, Heating and Cooling Equipment.The terminals are listed as an entire assembly.
VAV-PRC012-EN |
13 |
Agency Certifications
National Fire Protection Association
NFPA 70
This standard is also known as the National Electrical Code (NEC).The Code gives standards for installation of wiring and electrical equipment for most types of commercial and residential buildings. It is often referred to inVAV air terminal specifications when fan-powered boxes, electric heat or electric controls are included.
NFPA 90A
This standard does not speak directly to VAV air terminals but does discuss central system considerations pertaining to a fire and/or smoke condition.The standard discusses safety requirements in design and construction that should be followed to keep the air-handling system from spreading a fire or smoke.The standard specifies practices that are intended to stop fire and smoke from spreading through a duct system, keep the fire-resistive properties of certain building structures (fire walls, etc.) intact, and minimize fire ignition sources and combustible materials.
14 |
VAV-PRC012-EN |
Digit 1, 2—Unit Type
VP = VariTrane™ Fan-Powered Parallel VS = VariTrane Fan-Powered Series LP = VariTrane Fan-Powered
Low-Height Parallel LS = VariTrane Fan-Powered
Low-Height Series
Digit 3—Reheat
C |
= |
Cooling Only |
E |
= |
Electric Heat |
W |
= |
Hot Water Heat |
Digit 4—Development Sequence
F = Sixth
Digit 5, 6—Primary Air Valve
05 |
= |
5" inlet (350 max cfm) |
06 |
= |
6" inlet (500 max cfm) |
08 |
= |
8" inlet (900 max cfm) |
10 |
= |
10" inlet (1400 max cfm) |
12 |
= |
12" inlet (2000 max cfm) |
14 |
= |
14" inlet (3000 max cfm) |
16 |
= |
16" inlet (4000 max cfm) |
RT |
= |
8" x 14" inlet (1800 max CFM) |
Note: |
10, 12, 14, 16 Not Available on Low- |
|
|
|
Height |
Digit 7, 8—Secondary Air Valve
00 = N/A
Digit 9—Fan
P= 02SQ fan (500 nominal cfm)
Q= 03SQ fan (1100 nominal cfm)
R= 04SQ fan (1350 nominal cfm)
S= 05SQ fan (1550 nominal cfm)
T |
= |
06SQ fan (1850 nominal cfm) |
U |
= |
07SQ fan (2000 nominal cfm) |
V= 08SQ Fan (500 nominal cfm)
W= 09SQ Fan (900 nominal cfm)
X = 10SQ Fan (1800 nominal cfm)
Digit 10, 11—Design Sequence
** = Factory assigned
Digit 12, 13, 14, 15—Controls
DD01= Cooling Only Control
DD02= N.C. On/Off Hot Water DD03= Prop. Hot Water DD04= Staged On/Off E-Heat
DD05= Pulse Width Mod of E-Heat DD07= N.O. On/Off Hot Water
DD11= VV550 DDC Controller - Cooling Only
DD12= VV550 DDC Ctrl w/N.C. On/Off HW Valve
DD13= VV550 DDC Ctrl w/Prop. HW Valve
DD14= VV550 DDC Ctrl - On/Off Electric Heat
DD15= VV550 DDC Ctrl w/Pulse Width
Modulation
DD17= VV550 DDC Ctrl w/N.O. On/Off HW Valve
DD23= VV550 DDCBasic plusLocal (Electric heatPWM) Remote (Staged EH)
DD28= VV550 DDC-Basic plusLocal
(Water heat- N.O. 2-position) Remote (Water- N.O. 2-position)
DD29= VV550 DDC-Basic plusLocal (Water heat- N.C. 2-position) Remote (Water- N.C. 2-position)
DD30= VV550 DDC-Basic plusLocal (Water heat- N.O. 2-position) Remote (Water- N.C. 2-position)
DD31= VV550 DDC-Basic plusLocal (Water heat- N.C. 2-position) Remote (Water- N.O. 2-position)
DD32= VV550 DDC-Basic plusLocal (Electric heatStaged) Remote (Staged EH)
DD41= UC400 DDC-Basic (No water or electric heat)
DD42= UC400 DDC-Basic (Water heat-
Normally Closed- 2 position) DD43= UC400 DDC-Basic (Water heat-
Modulating)
DD44= UC400 DDC-Basic (Electric heatstaged)
DD45= UC400 DDC-Basic (Electric heatPWM)
DD47= UC400 DDC-Basic (Water heatNormally Opened- 2 position)
DD53= UC400 DDC-Basic plusLocal (Electric heatPWM) Remote (Staged EH)
DD58= UC400 DDC-Basic plusLocal (Water heat- N.O. 2-position) Remote (Water- N.O. 2-position)
DD59= UC400 DDC-Basic plusLocal (Water heat- N.C. 2-position) Remote (Water- N.C. 2-position)
DD60= UC400 DDC-Basic plusLocal (Water heat- N.O. 2-position) Remote (Water- N.C. 2-position)
DD61= UC400 DDC-Basic plusLocal (Water heat- N.C. 2-position) Remote (Water- N.O. 2-position)
DD62= UC400 DDC-Basic plusLocal (Electric heatStaged) Remote (Staged EH)
DD65= Basic (Electric HeatModulating SCR)
DD66= Basic plus – Local (Electric heat – Modulating SCR) Remote (Staged EH)
DD71= UC210 DDC-Basic (Cooling only)
DD72= UC210 DDC-Basic (Water heat-nc 2pos)
DD73= UC210 DDC-Basic (Water heat-Modulating)
DD74= UC210 DDC-Basic (Electric heat-staged)
DD75= UC210 DDC-Basic
(Electric heat-pwm)
DD77= UC210 DDC-Basic (Water heat-NO 2pos)
DD83= UC210 DDC-Basic+ Local (Electric heat-pwm) Remote (Staged)
DD84= UC210 DDC-Basic+ Local (Water heat Modulating) Remote (Water-NC 2pos)
DD85= UC210 DDC-Basic+ Local (Water heat Modulating) Remote (Water-NO 2pos)
DD86= UC210 DDC-Basic+ Local (Water heat NO 2pos)
Remote (Water-Modulating) DD87= UC210 DDC-Basic+ Local
(Water heat NC 2pos) Remote (Water-Modulating)
DD88= UC210 DDC-Basic+ Local (Water heat NO 2pos) Remote (Water-NO 2pos)
DD89= UC210 DDC-Basic+ Local (Water heat NC 2pos) Remote (Water-NC 2pos)
DD90= UC210 DDC-Basic+ Local (Water heat NO 2pos) Remote (Water-NC 2pos)
DD91= UC210 DDC-Basic+ Local (Water heat NC 2pos) Remote (Water-NO 2pos)
DD92= UC210 DDC-Basic+ Local (Electric heat-staged) Remote (Staged)
DD95= UC210 DDC-Ctrl w/Modulating SCR
DD96= UC210 DDC-SpaceTemp Ctrl w/ Local SCR & Remote Stge Elec Heat
DD00= Trane Actuator Only ENCL= Shaft Only in Enclosure
ENON= Shaft Out Side for Electric Units FM00= Other Actuator and Control FM01= Trane supplied actuator,
other control
PN00= N.O. Actuator and Linkage Only PN05= N.O. 3000 Series, RA Stat PN51= Pneumatic normally open
w/3011,DPS fan
PN52= Pneumatic normally open w/3011, DPM fan
PNON= Shaft Out Side for Pneumatic Units
N.C. = Normally-closed
N.O. = Normally-opened
DA Stat = Direct-acting pneumatic t-stat (by others)
RA Stat = Reverse-acting pneumatic t-stat (by others)
PN = Pneumatic
FM = Factory installation of customersupplied controller
PVR = Pneumatic Volume Regulator
Digit 16—Insulation
A= 1/2” Matte-faced
B= 1" Matte-faced
D = 1" Foil-faced
F= 1" Double-wall
G= 3/8” Closed-cell
Digit 17—Motor Type
D= PSC Motor
E= High-efficiency motor (ECM)
VAV-PRC012-EN |
15 |
Model Number Descriptions
Digit 18—Motor Voltage
1 |
= |
115/60/1 |
2 |
= |
277/60/1 |
3 |
= |
347/60/1 |
4 |
= |
208/60/1 |
5 |
= |
230/50/1 |
Digit 19—Outlet Connection
1 |
= |
Flanged |
2 |
= |
Slip & Drive |
Digit 20—Attenuator
0 |
= |
No Attenuator |
W |
= |
With Attenuator |
Digit 21—Water Coil
0 = None
1= 1-Row–Plenum inlet installed RH
2= 2-Row–Plenum inlet installed RH
3= 1-Row–Discharge installed, LH
4= 1-Row–Discharge installed, RH
5= 2-Row–Discharge installed, LH
6= 2-Row–Discharge installed, RH1
A= 1-Row–Premium water coil inlet
B= 2-Row–Premium water coil inlet
C= 1-Row–Premium hot coil
on discharge, LH
D= 1-Row–Premium hot coil on discharge, RH
E= 2-Row–Premium hot coil on discharge, LH
F= 2-Row–Premium hot coil on discharge, RH
Note: 1- and 2-row not available with Low-Height
Digit 22—Electrical Connections
L= Left (Airflow hitting you in the face)
R= Right (Airflow hitting you in the face)
W= Narrow Corridor LH, Hi-Volt Inlet Facing
X= Narrow Corridor RH, Hi-Volt Inlet Facing
Note: (W & X) Fan Powered Series Only
Digit 23—Transformer
0 = N/A (provided as standard)
Digit 24—Disconnect Switch
0 |
= |
None |
W |
= |
With |
Electric Reheat w/ door interlocking power disconnect, Cooling Only and Water Reheat w/ toggle disconnect
Digit 25—Power Fuse
0 |
= |
None |
W |
= |
With |
Digit 26—Electric Heat Voltage |
Digit 35—Wireless Sensors |
|||||
0 |
= |
None |
0 |
= |
None |
|
A |
= |
208/60/1 |
1 |
= |
Factory Mounted Wireless |
|
B |
= |
208/60/3 |
|
|
Receiver (Sensor Assembly) |
|
C |
= |
240/60/1 |
2 |
= |
Wireless Comm Interface |
|
D |
= |
277/60/1 |
|
|
Modular FM |
|
E |
= |
480/60/1 |
Note: |
All sensors selected in accessories |
||
F |
= |
480/60/3 |
||||
Digit 36—Pre-Wired Factory |
||||||
G |
= |
347/60/1 |
||||
H |
= |
575/60/3 |
Solutions |
|||
J |
= |
380/50/3 |
0 |
= |
None |
|
K |
= |
120/60/1 |
||||
1 |
= |
Factory Mounted DTS |
||||
|
|
|
||||
Note: |
K not available with Low Height |
2 |
= |
HW Valve Harness |
||
Digit 27, 28, 29—Electric Heat |
3 |
= |
Both DTS & HW Valve Harness |
|||
|
|
|
||||
kW |
|
|
|
|
|
|
000 = |
None |
|
|
|
||
050 = |
0.5 kW |
|
|
|
||
010 = |
1.0 kW |
|
|
|
||
015 = |
1.5 kW |
|
|
|
||
260 = |
26.0 kW |
|
|
|
Note: Electric Heat Voltage -
0.5 to 8.0 kW–½ kW increments
8.0 to 18.0 kW –1 kW increments
18.0 to 46.0 kW–2 kW increments
Digit 30—Electric Heat Stages
0 = None
1= 1 Stage
2= 2 Stages Equal
3= 3 Stages Equal
Note: 3 not available with Low Height
Digit 31—Contactors
0 = None
1= 24-volt magnetic
2= 24-volt mercury
3= PE with magnetic
4= PE with mercury
5= SCR heat UC400
6= SCR heat FMTD/ENCL/DD00
Note: SCR cannot be selected with the following configuration:
•KW > 10, 208 volt 3 phase, Low Height
•KW > 22, 480 volt 3 phase, Low Height
•Voltage = 575 volt
Digit 32—Airflow Switch
0 |
= |
None |
W |
= |
With |
Digit 33—Not Used
0 = N/A
Digit 34—Actuator
0 |
= |
Standard |
A |
= |
Belimo actuator |
16 |
VAV-PRC012-EN |
This section describes elements and process required to properly select fan-powered VAV terminals, and includes a specific examples. Selection procedure is iterative in nature which makes computer selection desirable. Selection of fan-powered VAV terminals involves four elements:
•Air valve selection
•Heating coil selection
•Fan size and selection
•Acoustics
Note: Use the same procedures for selecting Low-Height Fan-Powered Units.
Provided in the Performance Data—Air Pressure Requirements section of the catalog is the unit air pressure drop at varying airflows.To select an air valve, determine the airflow required at design cooling. Next, select an air valve diameter that will allow proper airflow modulation, (a velocity of 1600 – 2000 FPM is recommended). Keep in mind that modulation below 300 FPM is not recommended. Proper selection requires defining the minimum valve airflow (in either heating or cooling) and maintaining at least 300 FPM through the air valve.The minimum is typically set based on ventilation requirements. If zone ventilation does not come through the VAV unit, a minimum valve position can also be zero.
Supply Air Temperature
The first step required when selecting a heating coil is to determine the heating supply air temperature to the space, calculated using the heat transfer equation. A recommended value is 90°F, although values between 85°F and 95°F are common. Discharge air temperatures that exceed 20 degrees above space temperature are not recommended for proper diffuser operation. Air temperature difference is defined as the heating supply air temperature to the space minus the winter room design temperature.The zone design heat loss rate is denoted by the letter Q. Supply air temperature to the space equals the leaving air temperature (LAT) for the terminal unit.
Coil Leaving Air Temperature
Once the terminal unit LAT is determined, the heating requirements for the coil can be calculated. The leaving air temperature for the coil of a parallel fan-powered terminal unit varies based on the type of unit installed heat being selected. Series unit leaving air temperatures do not vary because in each case the coil is located on the unit discharge.
Electric coil LAT equals terminal unit LAT because the coil is located on the unit discharge. Hot water coils can be located on either the discharge or, for maximum system efficiency, the plenum inlet when located on the entering air side of the fan. Coil LAT is calculated using a mixing equation. Given the unit heating airflow and LAT, minimum primary airflow at its supply air temperature, and the volume of heated plenum air, the leaving air temperature for the hot water coil can be determined (see the unit selection example that follows for more details).
Coil Entering Air Temperature
The entering air temperature (EAT) to the coil also varies based on the coil position on the unit for parallel units.The unit heat is mounted on the discharge of a series unit.Therefore the EAT equals the temperature of blended primary and plenum air.
Parallel electric coils are mounted on the unit discharge. Hot water coils can be mounted on the discharge or on the plenum inlet. Plenum inlet mounting creates a more efficient VAV system.This is because the parallel fan is energized only when in heating mode, and thus, when in cooling mode, the water coil is not in the airstream.
The EAT for discharge mounted coils equals the temperature of blended primary air and plenum air. For plenum inlet mounted water coils, the EAT equals the plenum air temperature.
VAV-PRC012-EN |
17 |
Selection Procedure
Capacity Requirement
Once both coil EAT and LAT are determined, the heat transfer (Q) for the coil must be calculated using the heat transfer equation. For electric heat units, the Q value must be converted from Btu to kW for heater selection.The required kW should be compared to availability charts in the performance data section for the unit selected. For hot water heat units, reference the capacity charts in the performance data section for the required heat transfer Q and airflow to pick the appropriate coil.
Fan Airflow
Fan airflow is determined by calculating the difference between the unit design heating airflow and minimum primary airflow.
Fan External Static Pressure
Fan external static pressure is the total resistance experienced by the fan, which may include downstream ductwork and diffusers, heating coils, and sound attenuators. As total airflow varies so will static pressure, making calculation of external static pressure dependent on unit type.
In many applications of parallel terminals, a minimum primary airflow must be maintained to meet ventilation requirements.This primary airflow contributes to the total resistance experienced by the fan and should be accounted for in all components downstream of the fan itself, including electric coils. Hot water coils positioned on the fan inlet are not affected by the additional primary airflow.The static pressure resistance experienced by the fan due to the hot water coil is based on fan airflow only, not the total heating airflow.
With series fan-powered terminal units, all airflow passes through the fan. External static pressure requirements are the sum of the individual component pressure retirements at the design airflow of the unit.
Fan Motor Type
The fan motor type that will be used for the unit will need to be known before fan selection can begin.The ECM motor offers more efficient operation than the standard single-speed PSC motor and will use different fan curves. Because series fans operate in both heating and cooling mode, payback is typically 2–3 years for the premium ECM option. Refer to the Features and Benefits section to determine which motor is more appropriate for the unit
Selection
Once fan airflow and external static pressure are determined, reference the fan curves in the performance data section. Cross plot both airflow and external static pressure on each applicable graph. A selection between the minimum and maximum airflow ranges for the fan is required.
It is common to identify more than one fan that can meet the design requirements.Typically, selection begins with the smallest fan available to meet capacity. If this selection does not meet acoustical requirements, upsizing the fan and operating it at a slower speed can be done for quieter operation.
Air Valve Generated Noise
To determine the noise generated by the air valve, two pieces of information are required; design airflow and design air pressure drop.The design air pressure drop is determined by taking the difference between design inlet and static pressure (the valve’s most over-pressurized condition) and external static pressure at design cooling flow.This represents a worst-case operating condition for the valve.
18 |
VAV-PRC012-EN |
Selection Procedure
Fan Generated Noise
To determine fan noise levels, fan airflow, external static pressure and speed information is required.
Evaluation Elements
For parallel fan-powered terminal units, the air valve and fan operation must be evaluated separately because these operations are not simultaneous. For Series fan-powered units, the air valve and fan are evaluated together because they have simultaneous operation. Access the appropriate acoustics table(s) of the catalog and determine the sound power and NC prediction for both the discharge and radiated paths. It is important to understand that discharge air noise is generally not a concern with fan-powered terminals. Radiated noise from the unit casing typically dictates the noise level of the space. If the entire unit or any element of it is generating noise in excess of the Noise Criteria requirements, the size of the appropriate portion of the terminal should be increased. Because the selection procedure is iterative, care should be taken by the designer to confirm that the change in selection does not affect other elements of the unit or system design.
Air Valve Selection
Design Cooling Airflow:1000 cfm
Minimum Ventilation Airflow: 200 cfm
Maximum Unit APD: 0.25 in. wg
Choose 10" air valve
Check – Is minimum airflow above 300 FPM? Guidelines, FPP 8)
A 10" air valve is selected with unit pressure drop = 0.01 in. wg
Heating Coil Selection
Required Information:
Zone design heat loss: 20000 Btu
Unit heating airflow: 600 cfm
Winter room design temp.: 68ºF
Coil entering water temp.: 180ºF
Minimum primary airflow: 200 cfm
Fan Airflow: 400 cfm
Plenum temperature: 70ºF
Coil flow rate: 2 gpm
Primary air temperature: 55ºF
Heat Transfer Equation (Btu)
Q = 1.085 x Cfm x DTemperature
For the heating zone, the temperature difference is the zone supply air temperature (SAT) minus the winter room design temperature.
18000 Btu = 1.085 x 600 x (SAT - 68ºF) SAT = 95.6ºF
Because the designer chose to maximize system efficiency by having the hot water coil on the plenum inlet, the unit supply air temperature is equal to the mix of the heated plenum air from the fan and the minimum primary airflow.
600 cfm x 95.6ºF =
200 cfm x 55ºF +
(600 cfm - 200 cfm) x Coil LAT
Coil LAT = 116ºF
VAV-PRC012-EN |
19 |
Selection Procedure
For the heating coil, the temperature difference is the calculated coil LAT minus the coil EAT (Plenum AirTemperature).
Coil Q = 1.085 x 400 x (116-70) = 19,964 Btu = 19.96 Mbh
Coil Performance Table
Selection:
Size 02SQ fan, 1-row coil with 2 gpm =20.53 Mbh (at 400 cfm)
1-row coil with 2 gpm = 2.57 ft WPD
Fan Selection
Required Information:
Design airflow: 400 cfm
Downstream static pressure at design airflow: 0.25 in. wg
Fan external static pressure equals downstream static pressure (ductwork and diffusers) plus coil static pressure.The coil static pressure that the fan experiences is at the fan airflow (400 cfm).The downstream static pressure the fan experiences is at fan airflow plus minimum primary airflow. The sum of fan airflow and minimum primary airflow (600 cfm) is less than design airflow (1000 cfm) and therefore the 0.25 in. wg downstream static pressure at design airflow must be adjusted for the lower heating airflow.
Parallel Fan-Powered Unit with Water Coil (2 Options)
Plenum Inlet Mounted |
Discharge Mounted |
Using Fan Law Two:
Heating Downstream Static Pressure = (600/1000)2 x 0.25 = .09 in. wg
A size 02SQ fan has the capability to deliver approximately 650 cfm at 0.09 downstream static pressure. If an attenuator is required, use the attenuator air pressure drop tables to define additional fan static pressure.
Acoustics
Required Information:
Design inlet static press.: 1.0 in. wg
NC criteria: NC-35
The selection is a VPWF Parallel Fan-poweredTerminal Unit, 10" primary, parallel fan size 02SQ, with a 1-row hot water coil.
Determine the casing radiated noise level because it typically dictates the sound level (NC) of the space. With a parallel unit, two operating conditions must be considered, design cooling and design heating.
20 |
VAV-PRC012-EN |
Selection Procedure
Design Cooling (1000 cfm). Radiated valve typically sets the NC for parallel units in cooling mode. The closest tabulated condition (1100 cfm at 1.0 in. wg ISP) has an NC=31. (A more accurate selection can be done viaTOPSS electronic selection program.):
Table 2. Selection Program Output (Radiated Valve):
Octave Band |
2 |
3 |
4 |
5 |
6 |
7 |
NC |
|
|
|
|
|
|
|
|
Sound Power |
65 |
60 |
53 |
48 |
41 |
32 |
30 |
|
|
|
|
|
|
|
|
Design Heating (200 cfm valve, 400 cfm fan, 0.25 in. wg DSP). Radiated fan typically sets the NC for parallel units in heating mode.The closest cataloged condition (430 fan cfm , 0.25 in. wg DSP) has an NC=32. (A more accurate selection can be done viaTOPSS electronic selection program.)
Table 3. Selection Program Output (Radiated Fan):
Octave Band |
2 |
3 |
4 |
5 |
6 |
7 |
NC |
|
|
|
|
|
|
|
|
Sound Power |
66 |
58 |
56 |
52 |
48 |
41 |
31 |
|
|
|
|
|
|
|
|
The predicted NC level for design cooling is NC-30 and for design heating is NC-31. If the catalog path attenuation assumptions are acceptable, this unit meets all of the design requirements and the selection process is complete.
Computer Selection
The advent of personal computers has served to automate many processes that were previously repetitive and time-consuming. One of those tasks is the proper scheduling, sizing, and selection of VAV terminal units.Trane has developed a computer program to perform these tasks.The software is called theTrane Official Product Selection System (TOPSS).
TheTOPSS program will take the input specifications and output the properly sized VariTrane VAV terminal unit along with the specific performance for that size unit.
The program has several required fields, denoted by red shading in theTOPSS screen, and many other optional fields to meet the criteria you have. Required values include maximum and minimum airflows, control type, and model. If selecting models with reheat, you will be required to enter information to make that selection also.The user is given the option to look at all the information for one selection on one screen or as a schedule with the other VAV units on the job.
The user can select single-duct, dual-duct, and fan-powered VAV boxes with the program, as well as most otherTrane products, allowing you to select all yourTrane equipment with one software program.
The program will also calculate sound power data for the selected terminal unit.The user can enter a maximum individual sound level for each octave band or a maximum NC value.The program will calculate acoustical data subject to default or user supplied sound attenuation data.
Schedule View
The program has many time-saving features such as:
•Copy/Paste from spreadsheets like Microsoft® Excel
•Easily arranged fields to match your schedule
•Time-saving templates to store default settings
The user can also export the Schedule View to Excel to modify and put into a CAD drawing as a schedule.
Specific details regarding the program, its operation, and how to obtain a copy of it are available from your localTrane sales office.
VAV-PRC012-EN |
21 |
Selection Procedure
Air Valve Selection
Required Information: Design cooling airflow: 1000 cfm
Minimum ventilation airflow: 200 cfm
Maximum unit APD: 0.40 in. wg
A 10" air valve is selected.
Check–is minimum airflow above 300 FPM?
Answer–Yes. Minimum cfm allowable = 165 cfm. (See
General Data—Valve/Controller Guidelines pp FPS 8).
The 03SQ fan will be used in this instance. By interpolating, you can choose a 10" air valve with wide-open air pressure drop of 0.32 in. wg.
Heating Coil Selection
Required Information: Zone design heat loss: 30000 Btu
Design heating airflow: 1000 cfm
Winter room design temp.: 68ºF
Coil entering water temp.: 180ºF
Minimum primary airflow: 200 cfm
Plenum temperature: 70ºF
Primary air temperature: 55ºF
Coil flow rate: 2 gpm
HeatTransfer Equation (Btu) Q = 1.085 x Cfm x Temperature
For the heating zone, the temperature difference is the zone supply air temperature (SAT) minus the winter room design temperature.
30000 Btu = 1.085 x 1000 x (SAT-68°F) SAT = 96ºF
Because the hot water coil is on the unit discharge of a series fan-powered unit, the unit supply air temperature is equal to the coil LAT. Coil entering air temperature (EAT) is a mix of plenum air and the minimum primary airflow.
1000 cfm x Coil EAT = 200 cfm x 55ºF + (1000 cfm - 200 cfm) x 70ºF
Coil EAT = 67ºF
For the heating coil, the temperature difference is the calculated coil LAT minus the coil EAT (Plenum AirTemperature).
Coil Q =1.085 x 1000 x (96-70) = 31,465 Btu
On a series unit the hot water coil is located on the discharge, so the total heating airflow, 1000 cfm, passes through the coil.
Coil Performance Table
Selection:
Performance:
Size 03SQ fan, 1-row coil at 2 gpm = 32.23 MBh 1-row Coil at 2 gpm= 0.83 ft WPD
Fan Selection
Required Information. Fan airflow: 1000 cfm
Downstream static pressure at design airflow: 0.25 in. wg
A size 03SQ fan can operate at up to 1150 cfm (1-row coil) or 1100 (2-row coil) and 0.25" downstream static pressure. Inlet and coil selections should be verified withTOPSS electronic selections.
22 |
VAV-PRC012-EN |
Selection Procedure
If an attenuator is required, use attenuator air pressure drop tables to define additional fan static pressure.
Acoustics
Required Information. Design inlet static press: 0.75 in. wg
NC criteria (general office space): NC-40
The selection is a VSWF Series Fan-PoweredTerminal Unit, 10" primary, series fan size 03SQ, with a 1-row hot water coil.
Determine the casing radiated noise level because it typically dictates the sound level (NC) of the space. With a series unit, the air valve and fan operate simultaneously, so the chart for air valve and fan sound data must be consulted.
The results in the below table are for the acoustics value of a size 10" air valve with a size 03SQ fan.
The predicted NC level for design conditions is NC-38.
Octave Band |
2 |
3 |
4 |
5 |
6 |
7 |
NC |
|
|
|
|
|
|
|
|
Sound Power |
70 |
65 |
63 |
61 |
59 |
59 |
38 |
|
|
|
|
|
|
|
|
Note: Ensure water coil acoustical impact is considered. For this example, the appurtenance effect adds one (1) NC to fan-only radiated sound. Because this does not set NC for this selection, it can be overlooked.The addition of an attenuator (see same appurtenance effect tables reduces the NC four (4) points, resulting in a final selection NC = 30 (if required).
Note: Do not overlook the water coil impact on acoustics. A good rule of thumb is that it will add 1 to 2 NC to “fan only” radiated sound for most applications.
Computer Selection
The advent of personal computers has served to automate many processes that were previously repetitive and time-consuming. One of those tasks is the proper scheduling, sizing, and selection of VAV terminal units.Trane has developed a computer program to perform these tasks.The software is called theTrane Official Product Selection System (TOPSS).
TheTOPSS program will take the input specifications and output the properly sized VariTrane VAV terminal unit along with the specific performance for that size unit.
The program has several required fields, denoted by red shading in theTOPSS screen, and many other optional fields to meet the criteria you have. Required values include maximum and minimum airflows, control type, and model. If selecting models with reheat, you will be required to enter information to make that selection also.The user is given the option to look at all the information for one selection on one screen or as a schedule with the other VAV units on the job.
User can select single-duct, dual-duct, and fan-powered VAV boxes with the program, as well as most otherTrane products, allowing selection of allTrane equipment with one software program.
The program will also calculate sound power data for the selected terminal unit.The user can enter a maximum individual sound level for each octave band or a maximum NC value.The program will calculate acoustical data subject to default or user supplied sound attenuation data.
Schedule View
The program has many time-saving features such as:
•Copy/Paste from spreadsheets like Microsoft® Excel
•Easily arranged fields to match your schedule
•Time-saving templates to store default settings
User can also export Schedule View to Excel to modify and put into a CAD drawing as a schedule.
Specific details regarding program, its operation, and how to obtain a copy of it are available from your localTrane sales office.
VAV-PRC012-EN |
23 |
Table 4. Primary airflow control factory setting-I-P
|
Air Valve |
Maximum |
Maximum |
Minimum |
Constant Volume |
|
Control Type |
Size (in.) |
Valve Cfm |
Controller Cfm |
Controller Cfm |
Cfm |
|
|
|
|
|
|
|
|
|
5 |
350 |
40-350 |
0, 40-350 |
40-350 |
|
|
6 |
500 |
60-500 |
0, 60-500 |
60-500 |
|
Direct Digital |
8 |
900 |
105-900 |
0, 105-900 |
105-900 |
|
|
|
|
|
|
||
10 |
1400 |
165-1400 |
0, 165-1400 |
165-1400 |
||
Control/ UCM |
||||||
12 |
2000 |
240-2000 |
0, 240-2000 |
240-2000 |
||
|
||||||
|
14 |
3000 |
320-3000 |
0, 320-3000 |
320-3000 |
|
|
16 |
4000 |
420-4000 |
0, 420-4000 |
420-4000 |
|
|
|
|
|
|
|
|
|
5 |
350 |
63-350 |
0, 63-350 |
63-350 |
|
|
6 |
500 |
73-500 |
0, 73-500 |
73-500 |
|
Pneumatic with |
8 |
900 |
134-900 |
0, 134-900 |
134-900 |
|
Volume |
10 |
1400 |
215-1400 |
0, 215-1400 |
215-1400 |
|
Regulator |
12 |
2000 |
300-2000 |
0, 300-2000 |
300-2000 |
|
|
14 |
2885 |
408-2887 |
0, 408-2887 |
408-2887 |
|
|
16 |
3785 |
536-3789 |
0, 536-3789 |
536-3789 |
Note: Maximum airflow must be greater than or equal to minimum airflow.
Table 5. Primary airflow control factory settings – SI
|
Air Valve |
Maximum |
Maximum |
Minimum |
Constant |
|
Control Type |
Size (in.) |
Valve L/s |
Controller L/s |
Controller L/s |
Volume L/s |
|
|
|
|
|
|
|
|
|
5 |
165 |
19-165 |
0, 19-350 |
19-350 |
|
|
6 |
236 |
28-236 |
0, 28-236 |
28-236 |
|
Direct Digital |
8 |
425 |
50-425 |
0, 50-425 |
50-425 |
|
|
|
|
|
|
||
10 |
661 |
77-661 |
0, 77-661 |
77-661 |
||
Control/ UCM |
||||||
12 |
944 |
111-944 |
0, 111-944 |
111-944 |
||
|
||||||
|
14 |
1416 |
151-1416 |
0, 151-1416 |
151-1416 |
|
|
16 |
1888 |
198-1888 |
0, 198-1888 |
198-1888 |
|
|
|
|
|
|
|
|
|
5 |
165 |
30-165 |
0, 30-165 |
30-165 |
|
|
6 |
236 |
35-236 |
0, 35-236 |
35-236 |
|
Pneumatic with |
8 |
425 |
63-425 |
0, 63-425 |
63-425 |
|
Volume |
10 |
661 |
102-661 |
0, 102-661 |
102-661 |
|
Regulator |
12 |
944 |
141-944 |
0, 141-944 |
141-944 |
|
|
14 |
1362 |
193-1363 |
0, 193-1363 |
193-1363 |
|
|
16 |
1787 |
253-1788 |
0, 253-1788 |
253-1788 |
Note: Maximum airflow must be greater than or equal to minimum airflow.
Table 6. Unit air pressure drop – in. wg (I-P)
Fan/Inlet Size Airflow Cfm Cooling Only |
Fan/Inlet Size Airflow Cfm Cooling Only |
02SQ-05 |
40 |
0.01 |
|
150 |
0.03 |
|
250 |
0.08 |
|
350 |
0.17 |
|
|
|
02SQ-06 |
60 |
0.01 |
|
200 |
0.05 |
|
350 |
0.17 |
|
500 |
0.35 |
04SQ-14 |
320 |
0.01 |
|
1200 |
0.01 |
|
2100 |
0.01 |
|
3000 |
0.01 |
|
|
|
05SQ-10 |
165 |
0.01 |
|
550 |
0.01 |
|
950 |
0.02 |
|
1400 |
0.05 |
Note: Unit pressure drops do not include hot water coil or attenuator pressure drops.
02SQ-08 |
105 |
0.01 |
|
05SQ-12 |
240 |
0.01 |
|
350 |
0.03 |
|
|
750 |
0.01 |
|
600 |
0.09 |
|
|
1350 |
0.01 |
|
900 |
0.21 |
|
|
2000 |
0.01 |
|
|
|
|
|
|
|
24 |
VAV-PRC012-EN |
Performance Data
Table 6. Unit air pressure drop – in. wg (I-P) (continued)
Fan/Inlet Size |
Airflow Cfm |
Cooling Only |
02SQ-10 |
165 |
0.01 |
|
550 |
0.01 |
|
950 |
0.01 |
|
1400 |
0.01 |
|
|
|
03SQ-06 |
60 |
0.01 |
|
200 |
0.06 |
|
350 |
0.19 |
|
500 |
0.40 |
|
|
|
03SQ-08 |
105 |
0.01 |
|
350 |
0.03 |
|
600 |
0.08 |
|
900 |
0.20 |
|
|
|
03SQ-10 |
165 |
0.01 |
|
550 |
0.01 |
|
950 |
0.02 |
|
1400 |
0.05 |
|
|
|
03SQ-12 |
240 |
0.01 |
|
750 |
0.01 |
|
1350 |
0.01 |
|
2000 |
0.01 |
|
|
|
04SQ-08 |
105 |
0.01 |
|
350 |
0.03 |
|
600 |
0.08 |
|
900 |
0.20 |
|
|
|
04SQ-10 |
165 |
0.01 |
|
550 |
0.01 |
|
950 |
0.02 |
|
1400 |
0.05 |
|
|
|
04SQ-12 |
240 |
0.01 |
|
750 |
0.01 |
|
1350 |
0.01 |
|
2000 |
0.01 |
|
|
|
Fan/Inlet Size |
Airflow Cfm |
Cooling Only |
05SQ-14 |
320 |
0.01 |
|
1200 |
0.01 |
|
2100 |
0.01 |
|
3000 |
0.01 |
|
|
|
06SQ-10 |
165 |
0.01 |
|
550 |
0.01 |
|
950 |
0.01 |
|
1400 |
0.01 |
|
|
|
06SQ-12 |
240 |
0.01 |
|
750 |
0.01 |
|
1350 |
0.01 |
|
2000 |
0.01 |
|
|
|
06SQ-14 |
320 |
0.01 |
|
1200 |
0.01 |
|
2100 |
0.01 |
|
3000 |
0.01 |
|
|
|
06SQ-16 |
420 |
0.01 |
|
1600 |
0.01 |
|
2800 |
0.01 |
|
4000 |
0.01 |
|
|
|
07SQ-10 |
165 |
0.01 |
|
550 |
0.01 |
|
950 |
0.01 |
|
1400 |
0.01 |
|
|
|
07SQ-12 |
240 |
0.01 |
|
750 |
0.01 |
|
1350 |
0.01 |
|
2000 |
0.01 |
|
|
|
07SQ-14 |
320 |
0.01 |
|
1200 |
0.01 |
|
2100 |
0.01 |
|
3000 |
0.01 |
|
|
|
07SQ-16 |
420 |
0.01 |
|
1600 |
0.01 |
|
2800 |
0.01 |
|
4000 |
0.01 |
Note: Unit pressure drops do not include hot water coil or attenuator pressure drops.
Table 7. Coil air pressure drop – in. wg (I-P)
Fan Size |
Airflow Cfm |
1-Row HW (in. wg) |
2-Row HW (in. wg) |
02SQ |
100 |
0.00 |
0.00 |
|
200 |
0.01 |
0.01 |
|
300 |
0.01 |
0.02 |
|
400 |
0.02 |
0.03 |
|
500 |
0.02 |
0.05 |
|
|
|
|
03SQ |
250 |
0.01 |
0.02 |
04SQ |
500 |
0.02 |
0.04 |
05SQ |
750 |
0.04 |
0.08 |
|
1000 |
0.07 |
0.13 |
|
1250 |
0.10 |
0.19 |
|
1400 |
0.12 |
0.23 |
|
|
|
|
06SQ |
600 |
0.02 |
0.04 |
07SQ |
900 |
0.04 |
0.07 |
|
1200 |
0.06 |
0.11 |
|
1500 |
0.09 |
0.16 |
|
1800 |
0.12 |
0.22 |
|
2000 |
0.15 |
0.27 |
Note: HW Coil Only pressure drops do not include unit pressure drop.
VAV-PRC012-EN |
25 |
Performance Data
Table 8. Attenuator air pressure drop (I-P)
Fan Size Plenum Cfm |
Attenuator |
||
|
|
|
|
02SQ |
50 |
0.00 |
|
200 |
0.00 |
||
|
|||
|
350 |
0.01 |
|
|
500 |
0.02 |
|
|
650 |
0.04 |
|
|
750 |
0.06 |
|
|
|
|
|
03SQ |
50 |
0.00 |
|
250 |
0.00 |
||
|
|||
|
500 |
0.00 |
|
|
750 |
0.00 |
|
|
1000 |
0.01 |
|
|
1200 |
0.06 |
|
|
|
|
|
04SQ |
50 |
0.00 |
|
300 |
0.01 |
||
|
|||
|
600 |
0.02 |
|
|
900 |
0.03 |
|
|
1200 |
0.05 |
|
|
1450 |
0.06 |
Note: Plenum cfm = (Fan cfm)
Table 9. Attenuator air pressure drop (SI)
Fan Size |
Plenum L/s |
Attenuator |
|
|
|
|
|
02SQ |
24 |
0 |
|
94 |
0 |
||
|
|||
|
165 |
2 |
|
|
236 |
5 |
|
|
307 |
10 |
|
|
354 |
14 |
|
|
|
|
|
03SQ |
24 |
0 |
|
118 |
0 |
||
|
|||
|
236 |
0 |
|
|
354 |
0 |
|
|
472 |
2 |
|
|
566 |
14 |
|
|
|
|
|
|
24 |
0 |
|
|
142 |
3 |
|
04SQ |
283 |
5 |
|
425 |
8 |
||
|
|||
|
566 |
11 |
|
|
684 |
14 |
Note: Plenum cfm = (Fan cfm)
Fan Size |
Plenum Cfm |
Attenuator |
|
|
|
|
|
05SQ |
50 |
0.00 |
|
300 |
0.00 |
||
|
|||
|
600 |
0.02 |
|
|
900 |
0.06 |
|
|
1200 |
0.13 |
|
|
1550 |
0.24 |
|
|
|
|
|
06SQ |
50 |
0.00 |
|
500 |
0.01 |
||
|
|||
|
900 |
0.03 |
|
|
1300 |
0.06 |
|
|
1650 |
0.10 |
|
|
1900 |
0.14 |
|
|
|
|
|
07SQ |
50 |
0.00 |
|
500 |
0.01 |
||
|
|||
|
1000 |
0.04 |
|
|
1500 |
0.08 |
|
|
2000 |
0.15 |
|
|
2500 |
0.25 |
|
|
|
|
Fan Size |
Plenum L/s |
Attenuator |
|
|
|
|
|
05SQ |
24 |
0 |
|
142 |
1 |
||
|
|||
|
283 |
5 |
|
|
425 |
15 |
|
|
566 |
32 |
|
|
731 |
61 |
|
|
|
|
|
06SQ |
24 |
0 |
|
236 |
2 |
||
|
|||
|
425 |
7 |
|
|
613 |
15 |
|
|
779 |
26 |
|
|
897 |
35 |
|
|
|
|
|
|
24 |
0 |
|
|
236 |
2 |
|
07SQ |
472 |
9 |
|
708 |
21 |
||
|
|||
|
944 |
38 |
|
|
1180 |
62 |
|
|
|
|
Table 10. Coil air pressure drop – Pa (SI)
Fan Size |
Airflow L/s |
1-Row HW (Pa) |
2-Row HW (Pa) |
02SQ |
200 |
0 |
1 |
|
300 |
1 |
3 |
|
400 |
2 |
5 |
|
500 |
4 |
8 |
|
600 |
6 |
12 |
|
|
|
|
03SQ |
118 |
2 |
4 |
04SQ |
236 |
5 |
11 |
05SQ |
354 |
10 |
21 |
|
472 |
17 |
33 |
|
590 |
25 |
47 |
|
661 |
31 |
57 |
|
|
|
|
26 |
VAV-PRC012-EN |
Performance Data
Table 10. Coil air pressure drop – Pa (SI)
06SQ |
900 |
5 |
10 |
07SQ |
1200 |
9 |
18 |
|
1500 |
15 |
28 |
|
1800 |
22 |
41 |
|
2150 |
30 |
56 |
|
2500 |
36 |
67 |
Note: HW Coil Only pressure drops do not include unit pressure drop.
Table 11. Unit air pressure drop-Pa (SI)
Fan/Inlet Size |
Airflow L/s |
Cooling Only |
|
|
19 |
2 |
|
02SQ-05 |
71 |
7 |
|
118 |
20 |
||
|
|||
|
165 |
41 |
|
|
|
|
|
|
28 |
2 |
|
02SQ-06 |
94 |
13 |
|
165 |
41 |
||
|
|||
|
236 |
86 |
|
|
|
|
|
|
50 |
2 |
|
02SQ-08 |
165 |
8 |
|
283 |
23 |
||
|
|||
|
425 |
51 |
|
|
|
|
|
|
78 |
2 |
|
02SQ-10 |
260 |
2 |
|
448 |
2 |
||
|
|||
|
661 |
3 |
|
|
|
|
|
|
28 |
2 |
|
03SQ-06 |
94 |
15 |
|
165 |
48 |
||
|
|||
|
236 |
99 |
|
|
|
|
|
|
50 |
2 |
|
03SQ-08 |
165 |
6 |
|
283 |
21 |
||
|
|||
|
425 |
49 |
|
|
|
|
|
|
78 |
2 |
|
03SQ-10 |
260 |
2 |
|
448 |
6 |
||
|
|||
|
661 |
13 |
|
|
|
|
|
|
113 |
2 |
|
03SQ-12 |
354 |
2 |
|
637 |
2 |
||
|
|||
|
944 |
2 |
|
|
|
|
|
|
50 |
2 |
|
04SQ-08 |
165 |
6 |
|
283 |
21 |
||
|
|||
|
425 |
49 |
|
|
|
|
|
|
78 |
2 |
|
04SQ-10 |
260 |
2 |
|
448 |
6 |
||
|
|||
|
661 |
13 |
|
|
|
|
|
|
113 |
2 |
|
04SQ-12 |
354 |
2 |
|
637 |
2 |
||
|
|||
|
944 |
2 |
|
|
|
|
Note: Unit pressure drops do not include hot water coil or attenuator pressure drops.
Fan/Inlet Size Airflow L/s |
Cooling Only |
||
|
151 |
2 |
|
04SQ-14 |
566 |
2 |
|
991 |
2 |
||
|
|||
|
1416 |
2 |
|
|
|
|
|
|
78 |
2 |
|
05SQ-10 |
260 |
2 |
|
448 |
6 |
||
|
|||
|
661 |
13 |
|
|
|
|
|
|
113 |
2 |
|
05SQ-12 |
354 |
2 |
|
637 |
2 |
||
|
|||
|
944 |
2 |
|
|
|
|
|
|
151 |
2 |
|
05SQ-14 |
566 |
2 |
|
991 |
2 |
||
|
|||
|
1416 |
2 |
|
|
|
|
|
|
78 |
2 |
|
06SQ-10 |
260 |
2 |
|
448 |
2 |
||
|
|||
|
661 |
2 |
|
|
|
|
|
|
113 |
2 |
|
06SQ-12 |
354 |
2 |
|
637 |
2 |
||
|
|||
|
944 |
2 |
|
|
|
|
|
|
151 |
2 |
|
06SQ-14 |
566 |
2 |
|
991 |
2 |
||
|
|||
|
1416 |
2 |
|
|
|
|
|
|
198 |
2 |
|
06SQ-16 |
755 |
2 |
|
1321 |
2 |
||
|
|||
|
1888 |
2 |
|
|
|
|
|
|
78 |
2 |
|
07SQ-10 |
260 |
2 |
|
448 |
2 |
||
|
|||
|
661 |
2 |
|
|
|
|
|
|
113 |
2 |
|
07SQ-12 |
354 |
2 |
|
637 |
2 |
||
|
|||
|
944 |
2 |
|
|
|
|
|
|
151 |
2 |
|
07SQ-14 |
566 |
2 |
|
991 |
2 |
||
|
|||
|
1416 |
2 |
|
|
|
|
|
|
198 |
2 |
|
07SQ-16 |
755 |
2 |
|
1321 |
2 |
||
|
|||
|
1888 |
2 |
|
|
|
|
VAV-PRC012-EN |
27 |
Performance Data
|
Pa |
In. wg |
|
Parallel 02SQ—PSC |
|
|
|
|
|
|
150 |
0.60 |
|
|
|
|
|
|
|
|
125 |
0.50 |
|
|
|
|
|
|
|
Pressure |
100 |
0.40 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
DischargeStatic |
75 |
0.30 |
|
|
|
|
|
|
|
|
120 cfmmin |
(57L/s) |
|
|
|
|
|
|
|
|
50 |
0.20 |
|
|
|
|
|
|
|
|
25 |
0.10 |
200 |
300 |
400 |
|
|
|
|
|
|
100 |
500 |
600 |
700 |
Cfm |
|||
|
|
47 |
94 |
142 |
189 |
236 |
283 |
330 |
L/s |
|
|
|
|
|
Airflow |
|
|
|
|
|
|
Pa |
In. wg |
|
|
|
|
|
Parallel Fan Size 03SQ—PSC |
|
|
|
|
||||
|
|
199 |
0.80 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VPCF and VPEF maximum |
|
174 |
0.70 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Minimum |
PressureStatic |
150 |
0.60 |
|
mincfm250 |
L/s)(118 |
|
|
|
|
|
|
|
|
|
|
|
1-row coil maximum |
125 |
0.50 |
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
2-row coil maximum |
|
100 |
0.40 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Discharge |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
pressure for final fan performance. |
50 |
0.20 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Note: When attenuator is required, add inlet |
|
75 |
0.30 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
attenuator pressure to discharge static |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
25 |
0.10 |
|
|
|
|
|
600 |
700 |
800 |
900 |
1000 |
1100 |
1200 |
1300 Cfm |
|
|
|
|
200 |
|
|
300 |
400 |
500 |
|||||||||
|
|
|
94 |
|
|
142 |
189 |
236 |
283 |
330 |
378 |
425 |
472 |
519 |
566 |
614 |
L/s |
|
|
|
|
|
|
|
|
|
|
Airflow |
|
|
|
|
|
|
|
|
Pa |
In. wg |
|
|
|
|
Parallel 04SQ—PSC |
|
|
|
|
|
|
||||
|
199 |
0.80 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
174 |
0.70 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
PressureStatic |
150 |
0.60 |
mincfm300 |
L/s)(142 |
|
|
|
|
|
|
|
|
|
|
|
||
125 |
0.50 |
|
|
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
Discharge |
100 |
0.40 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
75 |
0.30 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
50 |
0.20 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
25 |
0.10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
200 |
|
|
400 |
600 |
|
800 |
|
1000 |
1200 |
|
1400 |
1600 |
Cfm |
|
|
|
|
94 |
|
|
189 |
283 |
|
378 |
|
472 |
566 |
|
661 |
755 |
L/s |
|
|
|
|
|
|
|
|
|
|
Airflow |
|
|
|
|
|
|
|
|
28 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VAV-PRC012-EN |
Performance Data
|
Pa |
In. wg |
|
|
|
Parallel 05SQ—PSC |
|
|
|
|
|
|
199 |
0.80 |
|
|
|
|
|
|
|
|
|
|
174 |
0.70 |
|
|
|
|
|
|
|
|
|
Static Pressure |
150 |
0.60 |
|
|
|
|
|
|
|
|
|
125 |
0.50 |
350 cfm min |
(165 L/s) |
|
|
|
|
|
|
|
|
100 |
0.40 |
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|||
Discharge |
75 |
0.30 |
|
|
|
|
|
|
|
|
|
50 |
0.20 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
25 |
0.10 |
|
|
|
|
|
|
|
|
|
|
|
300 |
|
500 |
700 |
900 |
1100 |
1300 |
1500 |
1700 |
Cfm |
|
|
142 |
|
236 |
330 |
425 |
519 |
614 |
708 |
802 |
L/s |
|
|
|
|
|
|
|
Airflow |
|
|
|
|
|
|
Pa |
In. wg |
|
|
|
Parallel 06SQ—PSC |
|
|
|
|
|
||
|
|
199 |
0.80 |
|
|
|
|
|
|
|
|
|
|
|
VPCF and VPEF maximum |
|
174 |
0.70 |
|
|
|
|
|
|
|
|
|
|
|
Pressure |
|
|
530cfm min |
(250L/s) |
|
|
|
|
|
|
|
|
|
|
1-row coil maximum |
125 |
0.50 |
|
|
|
|
|
|
|
|
|
|||
Minimum |
|
150 |
0.60 |
|
|
|
|
|
|
|
|
|
|
|
2-row coil maximum |
Static |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Discharge |
100 |
0.40 |
|
|
|
|
|
|
|
|
|
|
|
Note: When attenuator is required, add inlet |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
attenuator pressure to discharge static |
|
75 |
0.30 |
|
|
|
|
|
|
|
|
|
|
|
pressure for final fan performance. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
50 |
0.20 |
|
|
|
|
|
|
|
|
|
|
|
|
|
25 |
0.10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
400 |
|
600 |
800 |
1000 |
1200 |
1400 |
1600 |
1800 |
2000 |
2200 |
Cfm |
|
|
|
189 |
|
283 |
378 |
472 |
566 |
661 |
755 |
850 |
944 |
1038 |
L/s |
|
|
|
|
|
|
|
|
|
Airflow |
|
|
|
|
|
|
Pa |
In. wg |
|
|
|
Parallel 07SQ—PSC |
|
|
|
|
|
||
|
199 |
0.80 |
|
|
|
|
|
|
|
|
|
|
|
|
174 |
0.70 |
|
|
|
|
|
|
|
|
|
|
|
Pressure |
150 |
0.60 |
585 cfm min |
(276 L/s) |
|
|
|
|
|
|
|
|
|
125 |
0.50 |
|
|
|
|
|
|
|
|
|
|||
Static |
100 |
0.40 |
|
|
|
|
|
|
|
|
|
|
|
Discharge |
|
|
|
|
|
|
|
|
|
|
|
||
75 |
0.30 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
50 |
0.20 |
|
|
|
|
|
|
|
|
|
|
|
|
25 |
0.10 |
|
700 |
900 |
1100 |
1300 |
1500 |
1700 |
1900 |
2100 |
2300 |
Cfm |
|
|
500 |
|
||||||||||
|
|
236 |
|
330 |
425 |
519 |
614 |
708 |
802 |
897 |
991 |
1086 |
L/s |
|
|
|
|
|
|
|
Airflow |
|
|
|
|
|
VAV-PRC012-EN |
29 |
Performance Data
|
Pa |
In. wg |
|
|
|
VPxF 03SQ—ECM |
|
|
|
|
|
||
|
125 |
0.50 |
|
|
|
|
|
|
|
|
|
|
|
Static Pressure |
100 |
0.40 |
160 cfm min (76 L/s) |
|
|
|
|
|
|
|
|
|
|
75 |
0.30 |
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
||
Discharge |
50 |
0.20 |
|
|
|
|
|
|
|
|
|
|
|
|
25 |
0.10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
1000 |
1100 |
Cfm |
|
|
47 |
94 |
142 |
189 |
236 |
283 |
330 |
378 |
425 |
472 |
519 |
L/s |
|
|
|
|
|
|
|
Airflow |
|
|
|
|
|
|
|
|
Pa |
In. wg |
|
|
|
|
|
VPxF 04SQ—ECM |
|
|
|
|
|
|
|
|
|
125 |
0.50 |
|
|
|
|
|
|
|
|
|
|
|
|
|
VPCF and VPEF maximum |
|
100 |
0.40 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Minimum |
PressureStatic |
mincfm220 |
L/s)(104 |
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1-row coil maximum |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2-row coil maximum |
|
75 |
0.30 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Discharge |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ideal for systems seeking maximum motor |
50 |
0.20 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Notes: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1. ECMs (Electrically Commutated Motors) are |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
efficiency. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2. When attenuator is required, add inlet |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
attenuator pressure to discharge static |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
pressure for final fan performance. |
|
25 |
0.10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
200 |
|
|
400 |
600 |
|
800 |
1000 |
1200 |
|
1400 |
1600 |
Cfm |
|
|
|
|
94 |
|
|
189 |
283 |
|
378 |
472 |
566 |
|
661 |
755 |
L/s |
|
|
|
|
|
|
|
|
|
|
Airflow |
|
|
|
|
|
|
|
|
|
Pa |
In. wg |
|
|
|
|
VPxF 05SQ—ECM |
|
|
|
|
|
|
||
|
|
125 |
0.50 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
StaticPressure |
100 |
0.40 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
75 |
0.30 |
|
280cfm min |
(132L/s) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
Discharge |
50 |
0.20 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
25 |
0.10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
200 |
|
|
400 |
600 |
800 |
1000 |
1200 |
1400 |
1600 |
1800 |
2000 |
Cfm |
|
|
|
|
94 |
|
|
189 |
283 |
378 |
472 |
566 |
661 |
755 |
850 |
944 |
L/s |
|
|
|
|
|
|
|
|
|
|
Airflow |
|
|
|
|
|
|
|
30 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VAV-PRC012-EN |