Confidential Marketing Guide VariTrane™ Parallel and Series Fan-PoweredTerminal Units DATE: October 2002 ORDER No.: VAV-SLM005-EN Catalog Reference: VAV-PRC005-EN Introduction 3 Parallel Product Features 4–7 Parallel Feature Evaluation 8–11 Parallel Model Comparison 12 Parallel Quick Competitive Comparison 13–14 Parallel Primary Inlet Airflow Ranges (Cfm) 15 Parallel Valve/Fan Combinations 16 Parallel Size Comparison 17 Parallel Fan Airflow Comparison 18–21 Parallel Pressure Requirements 22–24 Parallel Hot Water Coil 25–29 Parallel Electric Coil 30–32 Parallel Contents
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ConfidentialMarketing Guide
VariTrane™Parallel and SeriesFan-PoweredTerminal UnitsDATE: October 2002 ORDER No.: VAV-SLM005-EN
This Fan-Powered marketing guide is divided into two sections: Fan-PoweredParallel and Fan-Powered Series. The guide is a performance and featurecomparison of Trane, Titus, Enviro-Tec (ETI), Price, and Nailor.
Along with just comparing the performance the guide also shows advantages anddisadvantages of the Trane product vs. the competition’s and explains key sellingfeatures of the product. This is done in the beginning pages of each section titledProduct Features. This Product Features page shows where Trane is advantaged,equal, and disadvantaged. There are also corresponding page numbers thatindicate where you can find more information regarding the features.
Example:Page # where more supporting
data can be found
Green = Trane is advantaged ..................................................... #
Yellow = Trane is equal .............................................................. #
Red = Trane is disadvantaged .................................................... #
3
ProductFeatures
TitusDTQP, ETQP, and PTQP
� 5 fan sizes available, 200–2650 cfm (range based on .25 in. wg DSP)� 19 valve/fan combinations� 5-point flow cross sensing device� 2 casing sizes� SCR fan speed control� DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, attenuators, and
various IAQ linings
VAV-SLM005-EN 4CONFIDENTIAL DOCUMENT. FOR INTERAL USE ONLY.
Trane vs. Titus PageGreen = Trane is advantaged
Yellow = Trane is equal
Red = Trane is disadvantaged
Encapsulated edges .................................................................................................. 8Factory-commissioned controls ...............................................................................11More measuring points on our flow ring ..............................................................8, 13ARI certified units ............................................................................................... 10, 13Air filter ................................................................................................................8, 13Filter frame...........................................................................................................8, 13Fan disconnect .....................................................................................................8, 13Hanger brackets ...................................................................................................8, 13
Number of valve/fan combinations..................................................................... 13, 16Unit access ............................................................................................................. 13Fan cfm ranges ............................................................................................. 14, 18–21SCR fan speed control ............................................................................................ 14
� 7 fan sizes available, 210–2500 cfm (range based on .25 in. wg DSP)� 19 valve/fan combinations�Minimum 14 measuring point flow ring�Metal encapsulated insulation edges standard for IAQ� Rugged contractor tough unit construction� Factory-commissioned controls� Factory calibrated�UL and ARI listed� Factory-mounting customer controls availability� DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, attenuators, and
various ‘IAQ’ linings
5VAV-SLM005-EN
ParallelFan-Powered
ProductFeatures
Enviro-Tech (ETI)VFR, VFR-WC, and VFR-EH
� 6 fan sizes available, 100–2400 cfm (range based on .25 in. wg DSP)� 19 Valve/Fan Combinations� 12-point Flow Star™ flow sensing device, (available for size 6” and above)�Mechanically fastened insulation�DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, attenuators, and
various IAQ linings
Green = Trane is advantaged
Yellow = Trane is equal
Red = Trane is disadvantaged
Trane vs. ETI PageTransformer ......................................................................................................... 14Factory-commissioned controls ........................................................................... 11Manual secondary cutout standard with electric reheat .................................... 9, 13Flow ring on smaller units (5" inlet) / ETI uses a flow bar ................................... 8, 13Air filter ............................................................................................................ 8, 13Filter frame....................................................................................................... 8, 13Fan disconnect ................................................................................................. 8, 13Hanger brackets ............................................................................................... 8, 13
Dual-wall insulation option ...................................................................................13External actuator ..................................................................................................13Damper position indicator ....................................................................................13Fan cfm range ........................................................................................... 14, 18–21
Line fuses for electric heat standard for ETI .......................................................... 14SCR electric heat control ................................................................................. 11, 14120-volt electric heat option .................................................................................. 14Electric reheat kW/voltage/staging options ................................................ 10, 30–31
TraneVPCF, VPWF, and VPEF
� 7 fan sizes available, 210–2500 cfm (range based on .25 in. wg DSP)� 19 valve/fan combinations�Minimum 14 measuring point flow ring�Metal encapsulated insulation edges standard for IAQ� Rugged contractor tough unit construction� Factory-commissioned controls� Factory calibrated�UL and ARI listed� Factory-mounting customer controls availability�DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, attenuators, and
various ‘IAQ’ linings
6
ParallelFan-Powered
VAV-SLM005-EN CONFIDENTIAL DOCUMENT. FOR INTERAL USE ONLY.
ProductFeatures
Green = Trane is advantaged
Yellow = Trane is equal
Red = Trane is disadvantaged
Trane vs. Price PageValve/fan combinations ...................................................................................... 13, 16Lower damper leakage ............................................................................................ 13More measuring point on our flow ring ................................................................8, 13Water coil access is standard with hot water reheat ................................................. 13Air filter ................................................................................................................8, 13Filter frame...........................................................................................................8, 13Fan disconnect .....................................................................................................8, 13Hanger brackets ...................................................................................................8, 13
Manual secondary cutout for electric reheat .........................................................9, 13Factory-commissioned DDC controls ...................................................................... 11Electric heat wire type ............................................................................................. 14
Perforated liner ................................................................................................... 11, 13SCR electric heat control .....................................................................................11, 14120-volt electric heat ................................................................................................ 14kW range .................................................................................................10, 13, 30–31Fan cfm range ............................................................................................... 14, 18–21Attenuators ............................................................................................................. 14
PriceFDV, FEV, FPV
� 5 fan sizes available, 220–2900 (range based on .25 in. wg DSP)� 14 valve/fan combinations� Factory calibrated to job requirements� SP-200 multi-point flow sensor with 12 measuring points� DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, attenuators, and
various insulation
TraneVPCF, VPWF, and VPEF
� 7 fan sizes available, 210–2500 cfm (range based on .25 in. wg DSP)� 19 valve/fan combinations�Minimum 14 measuring point flow ring�Metal encapsulated insulation edges standard for IAQ� Rugged contractor tough unit construction� Factory-commissioned controls� Factory calibrated�UL and ARI listed� Factory-mounting customer controls availability� DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, attenuators, and
various ‘IAQ’ linings
7VAV-SLM005-EN
ParallelFan-Powered
ProductFeatures
Nailor35P, 35PW, 35PE
� 6 fan sizes available. 150–2185 cfm (range based on .25 in. wg DSP)� 22 valve/fan combinations� Inclined opposed blade damper design� “Diamond Flow” multi-point averaging sensor with 8 measuring points�DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coil for reheat, attenuators, and
various IAQ linings
Green = Trane is advantaged
Yellow = Trane is equal
Red = Trane is disadvantaged
Trane vs. Nailor PageEncapsulated edges .............................................................................................. 8Factory-commissioned controls ........................................................................... 11Lower damper leakage .................................................................................... 11, 13Fan cfm range ........................................................................................... 14, 18, 21Manual secondary cutout for electric reheat ..................................................... 9, 13ARI certified units ........................................................................................... 10, 13Air filter ............................................................................................................ 8, 13Filter frame ....................................................................................................... 8, 13Fan disconnect ................................................................................................. 8, 13Hanger brackets ............................................................................................... 8, 13
Single point power ............................................................................................... 14Transformer standard .......................................................................................... 14
Number of valve/fan combinations ................................................................. 13, 16SCR electric heat control ................................................................................. 11, 14Attenuators .......................................................................................................... 14
TraneVPCF, VPWF, and VPEF
� 7 fan sizes available, 210–2500 cfm (range based on .25 in. wg DSP)� 19 valve/fan combinations�Minimum 14 measuring point flow ring�Metal encapsulated insulation edges standard for IAQ� Rugged contractor tough unit construction� Factory-commissioned controls� Factory calibrated�UL and ARI listed� Factory-mounting customer controls availability�DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, attenuators, and
various ‘IAQ’ linings
8
ParallelFan-Powered
VAV-SLM005-EN CONFIDENTIAL DOCUMENT. FOR INTERAL USE ONLY.
FeatureEvaluation
Hanger Brackets/Air Filter/Filter Frame/Fan DisconnectTrane provides hanger brackets, air filter, filter frame, and a fan disconnect asstandard. When Trane is in control of the specifications, make sure that we are makingour competition provide these options in their bill of materials!
Metal Encapsulated EdgesAll VariTrane units are complete with metal encapsulated insulation edges. Thisencapsulated design arrests cut fibers and prevents erosion of the fibers into theairstream. As a standard, our competition “butters” the edges of the exposedinsulation with an adhesive spray intended to hold the fibers together. After beinghandled, and over time, the adhesive breaks down and allows fibers to escape into theairstream. Edge spray is clearly not equivalent! Specifying VariTrane metalencapsulated edges will force the competition to add additional dollars to their units.Whether or not Trane is basis of design, make sure the consultant understands thesignificance of metal encapsulated edges.
Suggested Spec
INSULATION EDGE TREATMENT—All cut edges of insulation shall completely en-closed by metal to arrest cut fibers and prevent erosion into the airstream.
Number of Measuring Points on our Flow Ring (How low canyou go?)The accuracy of a flow-measuring device is determined by the lowest allowableminimum cfm setting. Below this cfm, the VAV units will change from pressure-independent (PI) to pressure-dependent (PD) control. Because VariTrane units aredesigned to integrate into a DDC control system the UCM, flow ring, and pressuretransducer create a flow measurement “system” which provides unmatched flowperformance in the VAV industry. Accuracy is +/- 5% from maximum to minimumcfm. See pp. 11 for a comparison of Trane vs. the competition.
Given:A consultant is designing a space that requires 800 cfm maximum airflow. Ventilationis determined by minimum occupancy = 8 persons. 15 cfm/person equates to 120minimum cfm.
Using the VariTrane Quick Select (VAV-SLP001-EN), the consultant chooses an8” inlet.
The 8" VariTrane air valve can have a minimum set as low as 110 cfm. Thus, the120 cfm minimum is available. Competitor “N” has a minimum that stops at150 cfm and can be no lower. Let’s look at the system/cost impact:
Find:The efficiency impact by having a higher minimum cfm setting.
Assume:
�Unit operates for 3000 hours per year
�Unit is providing reheat 50% of the time.
� Room setpoint (winter) = 70°F
� Supply Air = 55°F
Solution:When in reheat, the VAV unit operates at its minimum airflow. VAV systems typicallyhave 55°F primary air temperature. Let’s see how this 30 cfm can impact operatingcosts:
Qs = 1.085 x cfm x DT
The additional energy required by competitor “N” is
1.085 x 30 cfm x (70 – 55) = 488 Btuh
This equates to 732,375 Btu per year, per 8” valve, which is an increase of 25% inenergy required to reheat the air up to room temperature.
9VAV-SLM005-EN
ParallelFan-Powered
FeatureEvaluation
Suggested Spec
Multi-point, multi-axis flow ring or cross sensor to be furnished and installed byterminal unit manufacturer. Single-point or flow bar sensors are not acceptable. Flowsensing device shall be capable of maintaining airflow to within +/- 5 percent of ratedunit airflow setpoint when installed with 1.5 duct diameters straight duct, of the samesize as the primary airflow inlet, upstream from the unit.
Water Coil MBH PerformanceOverall we have the highest MBH performance out of our competition. This highperformance is the result of our higher water pressure drop on the coils. Don’t let thecompetition force you into a 2-row coil if our 1-row coil will satisfy the MBHperformance requirement.
Suggested Spec
HOT WATER HEATING COILS—Coils shall be factory-installed and shall consist ofaluminum-plated fins and seamless copper tubes. Fins shall have full fin collars toprovide accurate fin spacing and maximum fin-to-tube contact. Tubes shall be me-chanically expanded into the fin collars. Coils shall be leak tested under water to 450psig pressure. Supply and return water connections shall be on the same side of thecoil.
Water Coil Pressure DropAt first glance, you will notice that the Trane VAV water coils have a higher waterpressure drop then the competition. Typically, water pressure drop of VAV terminalunits is not a concern of engineers since the units are piped in a two-pipeconfiguration and the air-handler coil is in the same line. The air-handler water coilpressure drop is what the pump(s) will be sized for.
Manual Secondary Cutout“Electric heater shall be complete with automatic reset cutout and manual resetcutout. The Manual reset cutout shall be capable of being reset by a switch, or pushbutton. Fusible links are not acceptable.”
Why is this important?A fusible link is a small wire sized to melt when it receives more amperage than it wasdesigned to handle. Once melted, it can cool and complete the circuit again. Thissafety issue is why Trane no longer uses fusible links.
Additionally, finding of a replacement part for a fusible link may be difficult. Therefore,the unit would be down for an extended period.
Control Boxes as Standard for Units with NO Controls
What we do:
Field-Installed Controls:Approximately 50% of VAV controllers in the industry are “plenum rated”. This meansthey DO NOT NEED A CONTROL ENCLOSURE. If a control enclosure is required, thecontrols supplier should provide it. After all, they know the size, shape, etc. of theircontroller.
If transformers, disconnects, and/or fuses are factory-installed, then a controlenclosure will be provided to house these. (A control box is available as adesign special.)
Factory-Installed Competitive Controls:When competitive controls are installed in the factory and the controller to beinstalled is a plenum-rated controller, then no control box will be provided. If thecontroller is not plenum rated then a control box will be provided. (A control box isavailable as a design special.)
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VAV-SLM005-EN CONFIDENTIAL DOCUMENT. FOR INTERAL USE ONLY.
FeatureEvaluation
Analog ControlsAnalog controls are a reduced cost solution for the end-user… or are they? AnalogVAV controllers have a similar cost as DDC VAV controllers. What they lack is theability to:
�Monitor remotely
� Provide diagnostic data
� Provide feedback to building control panel
� DDC systems can recognize something is broken before it is even noticed by theoccupants. By the time occupants notice a problem, a service technician can alreadybe on the way.
� Leverage energy-saving strategies such as static pressure optimization (required byASHRAE 90.1) or Ventilation Reset. (See www.Trane.com/commercial/issues/iaq/ashrae.asp.com for additional details)
AcousticsMake sure you are doing an “apples to apples” comparison. Don’t let the competitionuse a less stringent sound power assumption or show cooling only information if re-heat is to be used.
Sound Power–if specifying a particular spectrum shape for a particularmanufacturer, this is the same as being a proprietary specification. This is not advised.
NC (Noise Criteria)–NC level is determined by taking the sound power generatedusing ARI 880-98, and applying a transfer function. The transfer function assumptionsin ARI 885-98 standard are significantly different than the 90 standard. On average, thesame unit operating at the same conditions will show a 4 NC improvement if theolder, superceded 90 standard is used. Don’t let the competition catch you in this trap.
Said another way, if your customers specified NC 40 in the space prior to the 98standard being written, that is now equivalent to NC 44 with the current standard
ARI Certification–Are the units that are specified ARI certified?Titus has a quantity of 19 valve/fan combinations, however on the ARI website only 14are listed as certified units.
Nailor has a quantity of 22 valve/fan combinations listed in their catalog, however onthe ARI website only 14 of those are listed as certified units.
Trane has a quantity of 19 valve/fan combinations, 19 of which are listed on theARI website.
If sound is going to be critical on specific units, make sure the units that we arecomparing to are listed on the ARI website www.ariprimenet.org .
UL Rating for Electric HeatOur units have been tested, approved, and listed with UL as an entire assembly. MostVAV manufacturing companies have their units ETL listed in accordance with ULstandards.
Electric Reheat kW/Voltage/Staging optionsTo better answer this questions as to why units with electric reheat are not able toreach certain higher kW’s on 2- and 3-stage or have certain number of stages, 3-phaseunits when some are able to reach kW’s on some 1-phase, 1-stage units. There aremany reasons why, but the two major limiting factors are wire size and the unitsdischarge dimensions.
A heating element requires a certain length, a certain diameter, and the correctnumber of elements in order to obtain the correct staging. This determines theohmage (resistance) needed to provide the desired kW. Since resistance and kW areinversely proportional for a given voltage, higher kW heaters end up needing very littleelement material, which means changing either the length or the diameter of the wire.However, there are safety issues, UL and NEC regulations, and manufacturingpractices that limit the diameter from getting too small. Hence, only one alternativeexists and that is to change the length of the wire, which may not be long enough tofill the discharge area of the heater. Filling the discharge area is important to building aheater, because it will minimize stratification and will increase the longevity of theheater by minimizing hot spots.
11VAV-SLM005-EN
ParallelFan-Powered
FeatureEvaluation
Factory-CommissioningFactory-commissioning is more than just factory-installed controls! Trane takes greatpride in being the industry leader in factory-commissioned DDC controls. Thefollowing table differentiates these concepts and indicates where options can beobtained (either the field, or the factory):
Factory-installed Factory-commissioned
Transformer optionally installed X XWires terminated in reliable/ consistent setting X XController mounted X XElectric heat contactors and fan relay wired X XTesting of heater contactors and fan relay XController addressing and associated testing XMinimum & Maximum airflows (occupied/unoccupied) XMinimum & Maximum temperature setpoints(occupied/unoccupied) XMinimum ventilation requirements(used to calculate ventilation fraction) XThumbwheel enable/ disable XHeating offset X
Factory-commissioned controllers provide the highest quality and most reliablecontrollers for your VAV system. Additional testing verifies proper unit operationincluding occupied/unoccupied airflow, temperature setpoints, communication linkfunctionality, and output device functionality. The benefits of factory-commissioningare standard on VariTrane terminal units with Trane DDC controls.
Perforated LinersThe intended use of perforated liners was for units that had a Mylar or Tedlarinsulation. Mylar and Tedlar insulation was found to have long-term durabilityproblems and would erode into the airstream over time. The perforated liner wasdesigned to hold the insulation with the idea to improve acoustical performance overa dual-wall construction.
Today, if a perforated liner is specified, it is generally used to prevent possible tearingof the insulation during installation. However, the perforated liner will still allow air topenetrate the insulation and loft fibers into the air stream. The best solution is to use afoil-face or dual-wall insulation option.
SCR Electric Heat ControlTrane does not offer an option for SCR electric heat control. Our competitors use SCRelectric heat control, which is very costly. We can achieve a modulating kW operationusing our DDC controls. Using pulse-width modulation, our DDC UCM calculateshow far from setpoint the temperature is and what percentage of the electric heat isneeded. The heater is then pulsed for a specific time period to satisfy the zone.
Suggested Spec
PULSE-WIDTH MODULATION (PWM)—At heating setpoint, energize first stage ofheat. The second stage of heating shall be energized based on time and temperaturedeviation from setpoint. Duty cycle these stages on a three-minute window. Stage 1shall modulate from 0–50 percent deviation and be on continuously above 50%. Stage2 shall modulate from 50–100 percent deviation.
Lower Damper Leakage
Our damper leakage rate is 1% @ 3 in. wg and Nailor’s leakage rate is 2% @3 in. wg.
Nailor’s higher rate is the result of an opposed blade damper design, which generallyhas a higher leakage rate.
12
ParallelFan-Powered
VAV-SLM005-EN CONFIDENTIAL DOCUMENT. FOR INTERAL USE ONLY.
VAV Terminal Units TRANE TITUS ETI PRICE NAILOR
Parallel Fan-Powered VPCF xTQP VFR FxV 35PCooling x = D (Digital) x = D (Digital)
E (Electronic) E (Electronic)P (Pneumatic) P (Pneumatic)
Parallel Fan-Powered VPWF xTQP VFR-WC FxV 35PWw/ Hot Water Reheat x = D (Digital) x = D (Digital)
E (Electronic) E (Electronic)P (Pneumatic) P (Pneumatic)
Parallel Fan-Powered VPEF xTQP VFR-EH FxV 35PEw/ Electric Reheat x = D (Digital) x = D (Digital)
E (Electronic) E (Electronic)P (Pneumatic) P (Pneumatic)
Note: For Titus and Price replace "x" for control options letter.
Unit Access Std.* Std. Std. Std. Std.*Notes: Trane-Access is available through the plenum inlet on cooling only and electric re-heat units. With water coils,access will be provided as standard.
Outlet Connection
Flange Std. Std. Std. Std. Std.Slip and Drive Opt. Opt. Opt.* Opt. Opt.*Notes: ETI only has S&D connection on HW reheat as standard.
External Actuator Std. Std. Std. Std. Std.
Damper Position Indicator Std. Std. Std. N/A N/A
Damper/Fan Combinations
Quantity of Valve/Fan Combinations 19 19 19 14 22# of the units listed by ARI 19 14 19 14 14
Damper Leakage @ 3 in. wg 1% 1% < 1% 2% 2%
Air Measurement
Flow Sensing Device Flow Ring Flow Cross Flow Star* Flow X Flow DiamondAccuracy +/-5% +/-5% +/-5% +/-5% +/-5%Min. Number Measuring Points 16 5 12 12 8*Notes: ETI has a single-point (flow bar) measuring device for size 5" inlet.
Reheat Offering
Series / Cooling Only Opt. Opt. Opt. Opt. Opt.Series / Hot Water Reheat Opt. Opt. Opt. Opt. Opt.Series / Electric Reheat Opt. Opt. Opt. Opt. Opt.Steam Coils N/A Opt. Opt. N/A N/A
VAV-SLM005-EN CONFIDENTIAL DOCUMENT. FOR INTERAL USE ONLY.
Valve/FanCombinations
Trane VP*FInlet Sizes
Fan Size 4" 5" 6" 8" 10" 12" 14" 16" Total
01 (210–500 cfm) X X 1902 (300–615 cfm) X X X03 (500–925 cfm) X X X04 (575–1150 cfm) X X X05 (1000–1675 cfm) X X X06 (1000–2350 cfm) X X X07 (1300–2500 cfm) X X
Titus TQPInlet Sizes
Fan Size 4" 5" 6" 8" 10" 12" 14" 16" Total
2 (200–600 cfm) X X X X 193 (410–1270 cfm) X X X X4 (840–1500 cfm) X X X X5 (700–1700 cfm) X X X X6 (1340–2650 cfm) X X X
ETI VFRInlet Sizes
Fan Size 4" 5" 6" 8" 10" 12" 14" 16" Total
4 (215–420 cfm) X X X X 196 (480–595 cfm) X X X11 (690–1150 cfm) X X X X18 (1450–1890 cfm) X X X21 (1600–2075 cfm) X X X24 (1800–2400 cfm) X X
Price F*VInlet Sizes
Fan Size 4" 5" 6" 8" 10" 12" 14" 16" Total
20 (220–670 cfm) X X X 1430 (500–1250 cfm) X X X40 (780–1910 cfm) X X X50 (1490–2450 cfm) X X X60 (2000–2900 cfm) X X
Nailor 35PInlet Sizes
Fan Size 4" 5" 6" 8" 10" 12" 14" 16" Total
2 (150–540 cfm) X X X 223 (150–775 cfm) X X X4 (650–1080 cfm) X X X X5 (590–1400 cfm) X X X X6 (860–1670 cfm) X X X X7 (1050–2185 cfm) X X X X
Notes:1. Fouling Factor = 0.000252. The off-coil temperature of the hot water coil on parallel fan-powered units must not exceed 140°F.3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD)4. Capacity based on 70°F entering air temperature and 180°F entering water temperature. Refer to correction factors for different
entering conditions.
26
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VAV-SLM005-EN CONFIDENTIAL DOCUMENT. FOR INTERAL USE ONLY.
TQP Titus Electric Coil kW Guidelines—Minimum to MaximumFan Single-Phase Voltage Three-Phase VoltageSize Stages 208 V/240 V 277 V 347 V 480 V 208 V 480 V 575 V
VFR ETI Electric Coil kW Guidelines—Minimum to MaximumFan Single-Phase Voltage Three-Phase VoltageSize Stages 208 V/240 V 277 V 347 V 480 V 208 V 480 V 575 V
FEV Price Electric Coil kW Guidelines—Minimum to MaximumFan Single-Phase Voltage Three-Phase VoltageSize Stages 208 V/240 V 277 V 347 V 480 V 208 V 480 V 600 V
6, 7 3/4 13.4 8.4 4.5Note: DIFFERENT motors than series units.Information listed is at high speed)
35PE Nailor Electric Coil kW Guidelines—Minimum to MaximumFan Single-Phase Voltage Three-Phase VoltageSize Stages 208 V/240 V 277 V 347 V 480 V 208 V 480 V 575 V
� 6 fan sizes available, 320 to 3100 cfm (range based on .25 in. wg DSP)� 21 valve/fan combinations� 5-point flow cross sensing device� Cast position indicator on damper shaft� SCR fan speed control�DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, and various ‘IAQ’
linings
TraneVSCF, VSWF, and VSEF
� 7 Fan sizes available, 280 to 3000 cfm (range based on .25 in. wg DSP)� 20 Valve/Fan Combinations�Minimum 16 measuring point flow ring�Metal encapsulated insulation edges standard for IAQ� Rugged contractor tough unit construction� Factory-commissioned controls�UL and ARI listed� Factory-mounting customer controls availability�DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, and various ‘IAQ’
linings
Green = Trane is advantaged
Yellow = Trane is equal
Red = Trane is disadvantaged
Trane vs. Titus PageEncapsulated edges ............................................................................................ 37, 43Factory-commissioned controls .............................................................................. 40More measuring points on our flow ring ............................................................. 37, 43ARI certified units ...............................................................................................39, 43Air filter .............................................................................................................. 37, 43Filter frame ......................................................................................................... 37, 43Fan disconnect ................................................................................................... 37, 43Hanger brackets ................................................................................................. 37, 43
Unit access .............................................................................................................. 43Fan Cfm ranges ............................................................................................ 44, 48–51SCR fan speed control ............................................................................................. 44
CONFIDENTIAL DOCUMENT. FOR INTERAL USE ONLY. 34VAV-SLM005-EN
ProductFeatures
Enviro-Tech (ETI)CFR, CFR-WC, and CFR-EH
� 9 fan sizes available, 230–4700 cfm (range based on .25 in. wg DSP)� 24 valve/fan combinations� 12-point Flow Star™ flow sensing device, (available for size 6” and above)�Mechanically fastened insulation�DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, and various ‘IAQ’
linings
TraneVSCF, VSWF, and VSEF
� 7 Fan sizes available, 280 to 3000 cfm (range based on .25 in. wg DSP)� 20 Valve/Fan Combinations�Minimum 16 measuring point flow ring�Metal encapsulated insulation edges standard for IAQ� Rugged contractor tough unit construction� Factory-commissioned controls�UL and ARI listed� Factory-mounting customer controls availability� DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, and various ‘IAQ’
linings
Transformer ....................................................................................................... 44Factory-commissioned controls ......................................................................... 40Manual secondary cutout standard with electric reheat .................................. 38, 43Flow ring on smaller units (5" inlet) / ETI uses a flow bar ..................................37, 43120-volt ECM option ........................................................................................... 44Air filter ..........................................................................................................37, 43Filter frame .....................................................................................................37, 43Fan disconnect ...............................................................................................37, 43Hanger brackets .............................................................................................37, 43
Line fuses for electric heat standard for ETI ......................................................... 43SCR electric heat control ................................................................................ 41, 44120-volt electric heat option ................................................................................ 44Fan cfm range ...........................................................................................44, 48, 51Electric reheat kW/voltage/staging options .......................................................... 40
Trane vs. ETI PageGreen = Trane is advantaged
Yellow = Trane is equal
Red = Trane is disadvantaged
SeriesFan-Powered
CONFIDENTIAL DOCUMENT. FOR INTERAL USE ONLY. 35VAV-SLM005-EN
ProductFeatures
PriceFDC, FEC, FPC
� 6 fan sizes available, 250–4000 (range based on .25 in. wg DSP)� 11 valve/fan combinations� Factory calibrated to job requirements� SP-200 multi-point flow sensor with 12 measuring points�DDC, Analog or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, attenuators, and
various insulations
TraneVSCF, VSWF, and VSEF
� 7 Fan sizes available, 280 to 3000 cfm (range based on .25 in.wg. DSP)� 20 Valve/Fan Combinations�Minimum 16 measuring point flow ring�Metal encapsulated insulation edges standard for IAQ� Rugged contractor tough unit construction� Factory-commissioned controls�UL and ARI listed� Factory-mounting customer controls availability�DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, and various ‘IAQ’
linings
Green = Trane is advantaged
Yellow = Trane is equal
Red = Trane is disadvantaged
Valve/fan combinations ................................................................................... 43, 46Lower damper leakage ......................................................................................... 43More measuring point on our flow ring ............................................................ 37, 43Water coil access is standard with hot water reheat ............................................ 44Air filter ........................................................................................................... 37, 43Filter frame ...................................................................................................... 37, 43Fan disconnect ................................................................................................ 37, 43Hanger brackets .............................................................................................. 37, 43
Manual secondary outout for electric reheat ................................................... 38, 43Factory-commissioned DDC controls .................................................................. 40Electric heat wire type .......................................................................................... 44
Perforated liner ............................................................................................... 40, 43SCR electric heat control ................................................................................. 41, 44120-volt electric heat ............................................................................................ 44kW range ................................................................................................... 43, 65, 68Fan cfm range ............................................................................................ 44, 48–51Attenuators ......................................................................................................... 44
Trane vs. Price Page
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ProductFeatures
TraneVSCF, VSWF, and VSEF
� 7 Fan sizes available, 280 to 3000 cfm (range based on .25 in.wg. DSP)� 20 Valve/Fan Combinations�Minimum 16 measuring point flow ring�Metal encapsulated insulation edges standard for IAQ� Rugged contractor tough unit construction� Factory-commissioned controls�UL and ARI listed� Factory-mounting customer controls availability� DDC, Analog, or Pneumatic control options�Options include hot water coils or integral electric coils for reheat, and various ‘IAQ’
Single-point power ............................................................................................. 44Transformer standard ......................................................................................... 44
SCR electric heat control ................................................................................ 41, 44PSC fan cfm range ....................................................................................44, 48–51ECM performance ......................................................................................... 73–74Attenuators ........................................................................................................ 44
Nailor35S, 35SW, 35SE
� 6 Fan sizes available. 300 – 3700 cfm (range based on .25 in.wg. DSP)� 15 Valve/Fan Combinations� Inclined opposed blade damper design� “Diamond Flow” multi-point averaging sensor with 8 measuring points� DDC, Analog, Pneumatic control options�Options include hot water coils or integral electric coil for reheat, attenuators, and
various IAQ linings
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FeatureEvaluation
Hanger Brackets/Air Filter/Filter Frame/Fan DisconnectTrane provides hanger brackets, air filter, filter frame, and a fan disconnect asstandard. When Trane is in control of the specifications, make sure that we aremaking our competition provide these options in their bill of materials.
Metal Encapsulated EdgesAll VariTrane units are complete with metal encapsulated insulation edges. Thisencapsulated design arrests cut fibers and prevents erosion of the fibers into theairstream. As a standard, our competition “butters” the edges of the exposedinsulation with an adhesive spray intended to hold the fibers together. After beinghandled, and over time, the adhesive breaks down and allows fibers to escape intothe airstream. This is clearly not equivalent! Specifying VariTrane metal encapsulatededges will force the competition to add additional dollars to their units. Whether ornot Trane is basis of design, make sure the consultant understands the significance ofmetal encapsulated edges.
Suggested Spec
INSULATION EDGE TREATMENT—All cut edges of insulation shall completelyenclosed by metal to arrest cut fibers and prevent erosion into the airstream.
Number of Measuring Points on our Flow Ring (How low canyou go?)The accuracy of a flow-measuring device is determined by the lowest allowableminimum cfm setting. Below this cfm, the VAV units will change from pressure-independent (PI) to pressure-dependent (PD) control. Because VariTrane units aredesigned to integrate into a DDC control system, the UCM, flow ring, and pressuretransducer create a flow measurement “system” which provides unmatched flowperformance in the VAV industry. Accuracy is +/- 5% from maximum to minimumcfm. See pp. XX for a comparison of Trane vs. the competition.
Given:A consultant is designing a space that requires 800 cfm maximum airflow. Ventilationis determined by minimum occupancy = 8 persons. 15 cfm/person equates to 120minimum cfm.
Using the VariTrane Quick Select (VAV-SLP001-EN), the consultant chooses an 8”inlet.
The 8” VariTrane air valve can have a minimum set as low as 110 cfm. Thus, the 120cfm minimum is available. Competitor “N” has a minimum which stops at 150 cfmand can be no lower. Let’s look at the system/cost impact:
Find:The efficiency impact by having a higher minimum cfm setting.
Assume:�Unit operates for 3000 hours per year
�Unit is providing reheat 50% of the time.
� Room setpoint (winter) = 70°F
� Supply air = 55°F
Solution:When in reheat, the VAV unit operates at its minimum airflow. VAV systems typicallyhave 55°F primary air temperature. Let’s see how this 30 cfm can impact operatingcosts:
Qs = 1.085 x cfm x DT
The additional energy required by competitor “N” is
1.085 x 30 cfm x (70 – 55) = 488 Btuh
This equates to 732,375 Btu per year, per 8” valve, which is an increase of 25% inenergy required to reheat the air up to room temperature.
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CONFIDENTIAL DOCUMENT. FOR INTERAL USE ONLY. 38VAV-SLM005-EN
FeatureEvaluation
Suggested Spec
Multi-point, multi-axis flow ring or cross sensor to be furnished and installed byterminal unit manufacturer. Single-point or flow bar sensors are not acceptable. Flowsensing device shall be capable of maintaining airflow to within +/- 5 percent of ratedunit airflow setpoint when installed with 1.5 duct diameters straight duct, of the samesize as the primary airflow inlet, upstream from the unit.
Water Coil MBH PerformanceOverall, we have the highest MBH performance out of our competition. This highperformance is the result of our higher water pressure drop on the coils. Don’t let thecompetition force you into using a 2-row coil if a 1-row coil can supply the specifiedMBH performance.
Suggested Spec
Hot Water Heating Coil—Coils shall be factory-installed and shall consist of aluminum-plated fins and seamless copper tubes. Fins shall have full fin collars to provideaccurate fin spacing and maximum fin-to-tube contact. Tubes shall be mechanicallyexpanded into the fin collars. Coils shall be leak tested under water to 450 psig pres-sure. Supply and return water connections shall be on the same side of the coil.
Water Coil Pressure DropAt first glance, you will notice that Trane VAV water coils have a higher water pressuredrop than the competition. Typically, water pressure drop of VAV terminal units is not aconcern of engineers since the units are piped in a two-pipe configuration and the air-handler coil is in the same line. The air-handler water coil pressure drop is what thepump(s) will be sized for.
Manual Secondary Cutout“Electric heater shall be complete with automatic reset cutout and manual resetcutout. The manual reset cutout shall be capable of being reset by a switch, or pushbutton. Fusible links are not acceptable.”
Why is this important?A fusible link is a small wire sized to melt when it receives more amperage than it wasdesigned to handle. Once melted, it can cool and complete the circuit again. Thissafety issue is why Trane no longer uses fusible links.
Additionally, finding of a replacement part for a fusible link may be difficult. Therefore,the unit would be down for an extended period.
Water Coil AccessAll series units have an access panel as standard on the side of the unit. However,you will still require an access to clean the water coil. When a reheat water coil isprovided, access is provided as standard for coil cleaning. For our competition, this isan option.
Control Boxes as Standard for Units with NO ControlsWhat we do:
Field-Installed Controls:Approximately 50% of VAV controllers in the industry are “plenum rated”. This meansthey DO NOT NEED A CONTROL ENCLOSURE. If a control enclosure is required, thecontrols supplier should provide it. After all, they know the size, shape, etc. of theircontroller. If transformers, disconnects, and/or fuses are factory installed, then acontrol enclosure will be provided to house these. (A control box is available as adesign special.)
Factory-Installed Competitive Controls:When competitive controls are installed in the factory and the controller to beinstalled is a plenum rated controller, then no control box will be provided. If thecontroller is not plenum rated then a control box will be provided. (A control box isavailable as a design special.)
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Analog ControlsAnalog controls are a reduced cost solution for the end-user… or are they? AnalogVAV controllers have a similar cost as DDC VAV controllers. What they lack is theability to:�Monitor remotely
� Provide diagnostic data
� Provide feedback to building control panel
� DDC systems can recognize something is broken before it is even noticed by theoccupants. By the time occupants notice, a service technician can already be on theway.
� Leverage energy saving strategies such as static pressure optimization (required byASHRAE 90.1) or Ventilation Reset. (See http://www.trane.com/commercial/issues/iaq/ashrae.asp.com for additional details)
AcousticsMake sure you are doing an “apples to apples” comparison. Don’t let the competitionuse a less stringent sound power assumption or show cooling only information if re-heat is to be used.
Sound Power–if specifying a particular spectrum shape for a particularmanufacturer, this is the same as being a proprietary specification. This is notadvised.
NC (Noise Criteria)–NC level is determined by taking the sound power generatedusing ARI 880-98, and applying a transfer function. The Transfer function assumptionsin ARI 885-98 standard are significantly different than the 90 standard. On average, thesame unit, operating at the same conditions will show a 4 NC improvement if theolder, superceded 90 standard is used. Don’t let the competition catch you in this trap.
Said another way, if your customers specified NC 40 in the space prior to the 98standard being written, that is now equivalent to NC 44 with the current standard.
ARI CertificationAre the units that are specified ARI certified?
Titus has a quantity of 21 Valve/Fan combinations. However on the ARI web site, onlysix are listed as certified units.
Nailor has a total 15 Valve/Fan combinations listed in their catalog. However, on theARI web site only 14 of those are listed as certified units.
Trane has a quantity of 19 Valve/Fan combinations. On the ARI web site, all 19 arelisted as certified units.
If sound is going to be critical on specific units, make sure the units that we arecomparing to are listed on the ARI website (www.ariprimenet.org).
UL Rating for Electric HeatOur units have been tested, approved, and listed with UL as an entire assembly. MostVAV manufacturing companies have their units ETL listed in accordance with ULstandards.
UL never certifies a product until it passes all the standard requirements and a verystringent internal review process. The checks and balances system that UL hasalways implemented tends to cause delays to which manufacturers are very averse.
In addition, UL has a very comprehensive follow-up program to ensure that productsmade after certification continue to be manufactured consistently with the initiallycertified and tested product. ETL, on the other hand, is known within the test andmeasurement community to be less rigorous in both the certification and the follow-up of the products that they evaluate.
In short, the ETL Listed Mark indicates that your product has been tested by ITS ETLSEMKO, found in compliance with accepted national standards, and meets the
FeatureEvaluation
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Electric Reheat kW/Voltage/Staging OptionsThere are many reasons why units with electric reheat are not able to reach certainhigher kWs with 2- and 3-stage, or have certain number of stages with 3-phase units.The two major limited factors are wire size and the units discharge dimensions.
A heating element requires a certain length and diameter, and the correct number ofelements in order to obtain the correct staging. This determines the ohmage(resistance) needed to provide the desired kW. Since resistance and kW are inverselyproportional for a given voltage, higher kW heaters need very little element material,which means changing either the length or the diameter of the wire.
However, there are safety issues, UL and NEC regulations, and manufacturingpractices that limit the diameter from getting too small. Hence, only one alternativeexists and that is to change the length of the wire, which may not be long enough tofill the discharge area of the heater. Filling the discharge area is important to building aheater, because it will minimize stratification and will increase the longevity of theheater by minimizing hot spots.
Factory-CommissioningFactory-commissioning is more than just factory installed controls! Trane takes greatpride in being the industry leader in factory-commissioned DDC controls. Thefollowing table differentiates these concepts and indicates where options can beobtained (either the field, or the factory.):
Factory-installed Factory-commissioned
Transformer optionally installed X XWires terminated in reliable/ consistent setting X XController mounted X XElectric heat contactors and fan relay wired X XTesting of heater contactors and fan relay XController addressing and associated testing XMinimum & Maximum airflows (occupied/unoccupied) XMinimum & Maximum temperature setpoints(occupied/unoccupied) XMinimum ventilation requirements(used to calculate ventilation fraction) XThumbwheel enable/ disable XHeating offset X
Factory-commissioned controllers provide the highest quality and most reliablecontrollers for your VAV system. Additional testing verifies proper unit operationincluding occupied/unoccupied airflow, temperature setpoints, communication linkfunctionality, and output device functionality. The benefits of factory-commissioningare standard on VariTrane terminal units with Trane DDC controls.
Perforated LinersThe intended use of the perforated liner was for units that had a Mylar or Tedlarinsulation. Mylar and Tedlar insulation was found to have long-term durabilityproblems and would erode into the airstream over time. The perforated liner wasdesigned to hold the insulation with the idea to improve acoustical performance overa dual-wall construction.
Today, if a perforated liner is specified, it is generally used to prevent possible tearingof the insulation during installation. However, the perforated liner will still allow air topenetrate the insulation and loft fibers. Our best solution is to use a foil-face or dual-wall insulation option.
FeatureEvaluation
SeriesFan-Powered
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FeatureEvaluation
SCR Electric Heat ControlTrane does not offer an option for SCR Electric Heat Control. Our competitors useSCR electric heat control, which is very expensive. We can achieve a modulating kWoperation using our DDC controls. Using pulse-width modulation, our DDC UCMcalculates how far from setpoint the temperature is and what percentage of theelectric heat it need to bring to satisfy the zone.
Suggested Spec
Pulse-Width Modulated (PWM)—At heating setpoint, energize first stage of heat. Thesecond stage of heating shall be energized based on time and temperature deviationfrom setpoint. Duty-cycle these stages on a three-minute window. Stage 1 shallmodulate from 0–50 percent deviation and be on continuously above 50%. Stage 2shall modulate from 50–100 percent deviation.
Lower Damper LeakageOur damper leakage rate is 1% @ 4 in. wg and Nailor’s leakage rate is 2% @ 3 in. wg.Nailor’s higher rate is the result of an opposed blade damper design, which generallyhas a higher leakage rate.
SeriesFan-Powered
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ModelComparison
Model ComparisonVAV Terminal Units TRANE TITUS ETI PRICE NAILOR
Series VSCF xTQS CFR FxC 35SFan-Powered x = D (Digital) x = D (Digital)
Cooling E (Electronic) E (Electronic)P (Pneumatic) P (Pneumatic)
Series VSWF xTQS CFR-WC FxC 35SWFan-Powered w/ x = D (Digital) x = D (Digital)
Hot Water Reheat E (Electronic) E (Electronic)P (Pneumatic) P (Pneumatic)
Series VSEF xTQS CFH-EH FxC 35SEFan-Powered w/ x = D (Digital) x = D (Digital)Electric Reheat E (Electronic) E (Electronic)
P (Pneumatic) P (Pneumatic)Notes: For Titus and Price replace “x” for control options letter.
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Unit Access Std. Std. Std. Std. Std.Built-in Water Coil Access Std. N/A Std. Opt. Std.
Outlet Connection
Flange Std. Std. Std. Std. Std.Slip and Drive Opt. Opt. Opt.* Opt. Opt.*Note: ETI only has S&D connection on HW reheat as standard.
External Actuator Std. Std. Std. Std. Std.
Damper Position Indicator Std. Std. Std. N/A N/A
Damper/Fan Combinations
Damper Blade Indicator Std. Std. Std. N/A N/AQuantity of Size Combinations 20 21 24 11 15# of the units listed by ARI 20 6 24 11 6
Damper Leakage @ 3 in. wg 1% 1% <1% 2% 2%
Air Measurement
Flow Sensing Device Flow Ring Flow Cross Flow Star* Flow X Flow DiamondAccuracy +/-5% +/-5% +/-5% +/-5% +/-5%Min. Number Measuring Points 16 5 12 12 8*Note: ETI has a single point (flow bar) measuring device for sizes 5
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Valve/FanCombinations
Titus TQSInlet Sizes
Fan Sizes 4" 5" 6" 8" 10" 12" 14" 16" Total
2 (320–750 cfm) X X X X 213 (600–1440 cfm) X X X X4 (820–1550 cfm) X X X X5 (900–1880 cfm) X X X X6 (1400–2350 cfm) X X X7 (1320–3100 cfm) X X
Nailor 35SInlet
Fan Sizes 4" 5" 6" 8" 10" 12" 14" 16" 18"oval Total
2 (300–700 cfm) X X 153 (400–1140 cfm) X X X4 (670–1630 cfm) X X X5 (840–2000 cfm) X X X6 (1260–2570 cfm) X X7 (1675–3700 cfm) X X
Price FxCInlet Sizes
Fan Sizes 4" 5" 6" 8" 10" 12" 14" 16" Total
20 (250–680 cfm) X X 1130 (550–1200 cfm) X X40 (800–1980 cfm) X X50 (1500–2400 cfm) X X60 (2000–3200 cfm) X X70 (2500–4000 cfm) X
ETI CFRInlet Sizes
Fan Sizes 4" 5" 6" 8" 10" 12" 14" 16" 16x16" Total
4 (230–415 cfm) X X X 246 (520–625 cfm) X X X11 (780–1270 cfm) X X X18 (1675–2000 cfm) X X X21 (1700–2275 cfm) X X X24 (1990–2575 cfm) X X30 (3050–3350 cfm) X X X40 (3125–4200 cfm) X X44 (3840–4700 cfm) X X
Trane VSxFInlet Sizes
Fan Sizes 4" 5" 6" 8" 10" 12" 14" 16" Total
01 (280–500 cfm) X X X 2002 (375–700 cfm) X X X03 (540–1130 cfm) X X X04 (690–1260 cfm) X X X05 (950–1950 cfm) X X06 (1200–2400 cfm) X X X07 (1200–3000 cfm) X X X
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PerformanceData—SizeComparison
Trane VSxF—Size ComparisonFan Cooling Electric H2O Width Height Cooling Cooling Electric H2OSize Length Heat Length Footprint Volume Heat Length
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PerformanceData—Electric Coil
TQS Titus Electric Coil kW Guidelines—Minimum to MaximumFan Single-Phase Voltage Three-Phase VoltageSize Stages 208V/240V 277V 347V 480V 208V 480V 575V
3 40 40 40 40 40 40 40Notes:1. Maximum kW determined by dividing the actual fan capacity (cfm) by 70 (i.e. maximum 70 Cfm per KW= 45° rise)2. Cfms are at 0.25" w.c.3. Available kW increments are as follows:� .5 to 5.0 kW—.25 kW�5.0 to 10.0 kW—.5 kW�Above 10 kW—1.0 kW)
35SE Nailor Electric Coil W Guidelines—Minimum to MaximumFan Single-Phase Voltage Three-Phase VoltageSize Stages 208V/240V 277V 347V 480V 208V 480V 575V
Notes:1. Analog electronic controls are limited to maximum 2 stages.2. Discharge air temperature may not exceed 120°F.3. A minimum airflow of 70 cfm per kW is required for any given terminal in order to avoid possible nuisance tripping of the thermal cutouts.
PerformanceData—Electric Coil
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Notes:1. Available kW increments are by 0.5 kW from 0.5–8.0 kW, by 1.0 kW from 9.0–17.0 kW, and by 2.0 kW from 18–24.0 kW.2. All heaters come with an auto-thermal cutout (140°F (60°C)) and manual reset cutout (160° F (71°C)).
ECM Fan Electrical PerformanceMax FLA
Fan Size HP 120VV 277V
04 1/2 7.7 4.105 1 12.8 6.9
CFRQ ETI ECM Electric Coil kW Guidelines—Minimum to MaximumInlet Single-Phase Voltage Three-Phase VoltageSize Stages 208V/240V 277V 347V 480V 208V 480V 575V
Notes:1. Maximum kW determined by dividing the actual fan capacity (cfm) by 70 (i.e. maximum 70 cfm per kW = 45° rise)2. Cfms are at 0.25" w.c.3. KWs assumed same as standard product, as catalog does not indicate otherwise.
3 0.5–8.0 .05–11.5 — — 0.5–14.5 .05–16.0 —Notes:1.KWs assumed same as standard product, as catalog does not indicate otherwise.2.Three low-height series units are available with 1/3 hp motor(s) providing from 100–1800 cfm.3.Units are available in standard or “Stealth” design. “Stealth” units have an integral attenuator.
ECM Fan Electrical PerformanceMax FLA
Fan Size HP 120V 277V
3 1/2 7.9 3.55 3/4 12.6 5.57 2@3/4 25.2 10.9
ECM Fan Electrical PerformanceMax FLA
Fan Size HP 120V 277V
20 1/2 6.5 2.040 1/2 8.0 4.060 1 13.0 6.0
F*CE Price ECM Electric Coil kW Guidelines—Minimum to MaximumInlet Single-Phase Voltage Three-Phase VoltageSize Stages 208V/240V 277V 347V 480V 208V 480V 575/600V