- 4-row hot water coils maintain heating capacity with lower entering water temperatures from electrified heating systems. A plus for meeting building decarbonization goals.
- ECM with variable fan airflow control (ECV) offers tight temperature control, reduced operational costs and part load conditions.
- Air-Fi® Wireless Communication eliminates wiring costs and reduces startup/commissioning time.
- Low leak casing design.
- Universal right- or left-hand connection design allows handing to be determined during installation.
VariTrane® VAV Parallel Fan Powered Terminal Units
Models VPxG, VPxF, VPCG, VPWG, VPEG, LPCF, LPWF, LPEF
Overview
Reliability and enhanced energy efficiency when paired with electrified heating systems.
- Airflow performance ranging up to 2500 CFM
- Available Primary Air Inlet Sizes: 4-in. to 16-in., 8-in x 14-in rectangular
- Available in both low and standard height configurations
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Energy Efficiency
Our Parallel Fan Powered Terminal Units are designed to optimize performance and increase energy efficiency, featuring an intermittent ECM fan with variable speed fan control that operates in heating mode only and low leak casing design to help deliver optimal thermal comfort and reduce energy consumption.
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Versatile Design
With multiple casing heights and universal right- or left-hand connections, the Parallel Fan Powered Terminal Units offer a flexible design that ensures ease of installation, saving time and effort.
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Factory Commissioned Controls for Superior Performance
Factory mounted, wired and tested BACnet communication controls are pre-programmed with tested and proven control sequences for optimal performance, assuring seamless integration with Building Automated Systems.
Product Information
- UL-60335 Listed
- AHRI 880/885 Certified Acoustical Performance
- Airflow performance ranging up to 2500 CFM.
- Available Primary Air Inlet Sizes: 4-in. to 16-in., 8-in x 14-in rectangular
- Low height (10.5-in.) and Standard height (20-in.) casing options
- Standard top and bottom access panels for improved accessibility to internal components
- 1” total static pressure capability supports MERV-8 and MERV-13 high-efficiency filtration
- LEED wrap prevents contamination during the construction phase
FAQs
Your frequently asked questions about parallel fan powered VAV boxes, answered.
Parallel fan-powered terminal units are commonly used in zones which require some degree of heat during occupied hours when the primary supply air is cool. The terminal unit fan is in parallel with the central unit fan; no primary air from the central fan passes through the terminal unit fan. The terminal unit fan draws air from the space ceiling plenum.
When no heat is needed, the local parallel fan is off and a backdraft damper on the fan’s discharge is closed to prevent cool air entry into the plenum. When cool primary airflow to the zone is at a minimum and the zone temperature drops below heating setpoint, the local parallel fan is turned on and the backdraft damper opens. The fan can deliver either a constant or variable volume of warm plenum air, which is mixed with cool primary air at a minimum flow. Remote heat or terminal reheat can provide additional local heating.
With the VAV Parallel Fan-Powered Terminal Units, the terminal unit fan is in parallel with the central unit fan; no primary air from the central fan passes through the terminal unit fan. Fan is only used when needed, making the unit more energy efficient.
With the VAV Series Fan-Powered Terminal Unit, terminal unit fan is in series with the central fan. Primary air from the central fan always passes through the terminal unit fan. As the fan is always on, Series Fan Powered Units may be a more optimal choice where acoustics is a top concern, as the noise level is constant.
Yes, Trane offers low-height parallel fan-powered models with 10.5 inches casing height. Low-height fan-powered terminal units are a slightly modified version of a fan-powered terminal unit. As its name suggests, the low-height fan-powered unit has a shorter height dimension to accommodate applications where ceiling space is limited.
Low acoustic levels are more challenging in these low ceiling space applications due to the reduced radiated ceiling plenum effect. The operation of the low-height terminal unit is exactly the same as that of a parallel terminal unit, as are the options for high-efficiency ECMs, insulation options, etc. As with the other fan-powered terminal units, additional local heating can be provided by remote heat or terminal reheat.
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Models VPxG, VPxF, VPCG, VPWG, VPEG, LPCF, LPWF, LPEF
Upgrade your HVAC system with VariTrane parallel fan powered VAV boxes, optimized for heat pump and heat recovery chillers for enhanced energy efficiency. Low-height models also available.
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