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VAV Terminal Units VAV TERMINAL UNITS All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown. Introduction ASLI Variable Air Volume (VAV) terminal units are volume flow rate controller for supply air on variable air volume system. These units are designed to control the airflow rate of conditioned air into an occupied space in response to a control signal from thermostat or Building Automation System (BAS). They could be used in stand alone system or interfaced with LONWORKS or BACnet. ASLI VAV terminal units consist of a casing with circular inlet spigot, rectangular outlet connection with integral of fiberglass with black matt tissue for noise reduction, damper blade for air volume control and cross flow differential pressure sensor for measuring air volume. ASLI VAV terminal units also incorporate control components, (VAV controller actuator, and transformer) which are factory fitted. ASLI in-house testing facility ensured that all boxes that come out from the factory are calibrated and tested to match the controller of individual size. This allow the terminals to monitor the desired flow rate, as dictated by the thermostat or BAS, and compensate instantly for any changes in supply air pressure that might tend to alter the supply air volume. Hence, the net result is a pressure independent variable air volume system. Features Oval shape damper for better flow management. Neoprene peripheral gasket to prevent leakage. Multi-point averaging inlet differential pressure sensor. 1”, 2 lbs fiberglass with black matt tissue internal insulation for noise reduction. Round inlet with beading for good inlet connection. Square damper shaft for better grip mounting of actuator. Shaft indicator indicating damper position. Double layer heavy gauge damper blade. Protective metal shroud for control components mounting. Low pressure drop construction with round inlet and rectangular outlet- static regain. Can be used for Constant Air Volume (CAV) application. Rectangular discharge opening with slip and drive cleat duct connection. Optional internal perforated sheet or aluminum foil facing. Reheat coil available upon request. Tube conceal (optional). Materials • Casing: 0.7mm thickness galvanized steel. • Damper blade: Double layer 0.7mm thickness galvanized steel with a sandwiched peripheral gasket. • Internal insulation: 25mm (1”) 40 kg/m3 (2 lb) density fiber glass with matt black tissue facing. • Bearing: Engineering plastic. • Square shaft: 10mmX10mm galvanized steel. Differential pressure sensor: Aluminum. Air Volume Control Type Variable Air Volume (VAV) Pressure Dependent Control - Without differential pressure sensor. - Pressure dependent. - No monitoring of air volume. Variable Air Volume (VAV) Pressure Independent Control - With differential pressure sensor. - Pressure independent. - Air volume varies depending on design flow and signal by controller. - Air volume could be monitored. Constant Air Volume (CAV) Pressure Independent Control - With differential pressure sensor. - Pressure independent. - Air volume is constant (design flow) provided that the minimum static pressure is achieved. - Air volume could be monitored. VAV page 1 of 15 Type I Type II

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  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    IntroductionASLI Variable Air Volume (VAV) terminal units are volume flow rate controller for supply air on variable air volume system. These units are designed to control the airflow rate of conditioned air into an occupied space in response to a control signal from thermostat or Building Automation System (BAS). They could be used in stand alone system or interfaced with LONWORKS or BACnet.

    ASLI VAV terminal units consist of a casing with circular inlet spigot, rectangular outlet connection with integral of fiberglass with black matt tissue for noise reduction, damper blade for air volume control and cross flow differential pressure sensor for measuring air volume.

    ASLI VAV terminal units also incorporate control components, (VAV controller actuator, and transformer) which are factory fitted. ASLI in-house testing facility ensured that all boxes that come out from the factory are calibrated and tested to match the controller of individual size. This allow the terminals to monitor the desired flow rate, as dictated by the thermostat or BAS, and compensate instantly for any changes in supply air pressure that might tend to alter the supply air volume. Hence, the net result is a pressure independent variable air volume system.

    Features Oval shape damper for better flow management. Neoprene peripheral gasket to prevent leakage. Multi-point averaging inlet differential pressure sensor. 1, 2 lbs fiberglass with black matt tissue internal insulation for noise reduction. Round inlet with beading for good inlet connection. Square damper shaft for better grip mounting of actuator. Shaft indicator indicating damper position. Double layer heavy gauge damper blade. Protective metal shroud for control components mounting. Low pressure drop construction with round inlet and rectangular outlet- static regain. Can be used for Constant Air Volume (CAV) application. Rectangular discharge opening with slip and drive cleat duct connection. Optional internal perforated sheet or aluminum foil facing. Reheat coil available upon request. Tube conceal (optional).

    Materials Casing: 0.7mm thickness galvanized steel. Damper blade: Double layer 0.7mm thickness galvanized steel with a sandwiched peripheral gasket. Internal insulation: 25mm (1) 40 kg/m3 (2 lb) density fiber glass with matt black tissue facing. Bearing: Engineering plastic. Square shaft: 10mmX10mm galvanized steel. Differential pressure sensor: Aluminum.

    Air Volume Control Type Variable Air Volume (VAV) Pressure Dependent Control

    - Without differential pressure sensor. - Pressure dependent.- No monitoring of air volume.

    Variable Air Volume (VAV) Pressure Independent Control- With differential pressure sensor.- Pressure independent.- Air volume varies depending on design flow and signal by controller.- Air volume could be monitored.

    Constant Air Volume (CAV) Pressure Independent Control- With differential pressure sensor.- Pressure independent.- Air volume is constant (design flow) provided that the minimum static pressure is achieved.- Air volume could be monitored.

    VAV page 1 of 15

    Type I

    Type II

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    Construction Illustrations Type I

    Physical Dimension Type I Unit:mm

    General notes: Internal insulation 25mm (1) 32 kg/m3 (2 lb) density coated to prevent air erosion. Galvanized steel housing. Mechanically seal-leak resistant construction. Rectangular discharge opening have drive and slip cleat duct connections as standard. Right hand control location standard, as shown above. Turbulent flow approaching the terminal will create additional noise, pressure drop and greater air flow variation. It is therefore recom mended for optimum perfor mance there should be a

    minimum of 4 duct diameters of straight inlet duct, same size as inlet, between the inlet and any transition, take off or fitting.

    VAV page 2 of 15

    D A B C E F G L H

    100 305 203 394 120 220 310 700 100

    150 305 203 394 120 220 310 700 100

    200 305 254 394 120 220 310 700 100

    250 356 318 394 120 220 310 700 100

    300 406 381 394 120 220 310 700 100

    350 508 445 396 120 220 310 700 100

    400 610 457 396 120 220 310 700 100

    609 X 406 965 460 395 120 220 310 700 100

    Figure 2: VAV Terminal Unit (Type I) with Electric Reheat Coil

    Figure 1: Basic VAV Terminal Unit (Type I)

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 3 of 15

    Construction Illustrations Type II

    Construction Illustrations Type II Unit:mm

    General notes: Internal insulation 25mm (1) 32 kg/m3 (2 lb) density coated to prevent air erosion. Galvanized steel housing. Mechanically seal-leak resistant construction. Rectangular discharge opening have drive and slip cleat duct connections as standard. Right hand control location standard, as shown above. Turbulent flow approaching the terminal will create additional noise, pressure drop and greater air flow variation. It is therefore

    recommended for optimum performance there should be a minimum of 4 duct diameters of straight inlet duct, same size as inlet, between the inlet and any transition, take off or fitting.

    D A B C E F G L H

    100 305 203 444 120 220 310 700 100

    150 305 203 444 120 220 310 700 100

    200 305 254 444 120 220 310 700 100

    250 356 318 444 120 220 310 700 100

    300 406 381 444 120 220 310 700 100

    350 508 445 546 120 220 310 700 100

    400 610 457 546 120 220 310 700 100

    609 X 406 965 460 445 120 220 310 700 100

    Figure 2: VAV Terminal Unit (Type II) with Electric Reheat Coil

    Figure 1: Basic VAV Terminal Unit (Type II)

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 4 of 15

    VAV TERMINAL UNITS

    ST-5000 Single Duct Variable Air Volume Terminal Selection Guide

    VAV Terminal Units

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 3 of 14

    Air Volume Ranges

    MOA Multi-Outlet Attenuator Section

    CFM26 - 22562 - 450110 - 800180 - 1350270 - 2100400 - 3200570 - 40002500 - 8000

    liter/s12 - 10629 - 21252 - 37885 - 637127 - 991189 - 1510269 - 18881800 - 3775

    Air Volume Range (Min - Max)

    100 (4)150 (6)200 (8)250 (10)300 (12)350 (14)400 (16)

    609 X 406 (24X16)

    Unit Size, mm (inch)

    4 = 4 dia.6 = 6 dia.8 = 8 dia.10 = 10 dia.12 = 12 dia.14 = 14 dia.16 = 16 dia.24X16 = 24X16 inlet

    0 = Time proportional1 = Single Stage

    2 = Two Stage

    3 = Three Stage

    0 = Cooling Only

    1 = Water Reheat

    2 = Electric Reheat

    A= DDC Control by ASLIB = Bare UnitC = Constant Volume UnitD = DDC Control by Others

    E = Electronic ControlF = Pneumatic Control

    ST - 5

    ATT Attenuator Section RDC Round Discharge Collar36" (914) A

    4"(102)

    3.625"(84)A

    BB Normal Size

    End View

    End View

    End ViewSide View

    Side View

    36" (914)

    3.313" (84)Typical

    3.313" (84)Typical

    B

    B

    Notes: Only one outlet size to be specified per M.O.A. - No mixing of outlet sizes on the same unit. All round outlet c/w manual dampers. Denotes air flow direction. For special outlet sizes & arrangements, consult

    Standard MOA Configuration

    A B DC FE G

    Non-Std.Arrangements

    NC = Without Tube Conceal

    C = With Tube Conceal

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 5 of 15

    VAV TERMINAL UNITS

    Electric Reheat ApplicationASLI offers factory supplied and mounted electric coils for VAV terminal units. The electric reheat extension comes in separate unit which can be installed onthe existing basic VAV terminal units. The electric heater coils are removable from the side of the terminal units consoled within a shroud.

    Features Of ASLI VAV Terminal Units With Electric Reheat Coils Heaters are factory wired and tested ensuring a high level of quality. Electric coil configuration and air flow is matched to eliminate hot spots, provide efficient heat transfer and to maintain element life. Reheat units come with a manual reset thermal cut-out to protect unit from overheating. 25mm (1) 32 kg/m3 (2 lb) density fiberglass internal insulation to prevent air erosion. Magnetic contactors are provided as standard on stages heaters for de-energizing or disconnecting power to heating coils. An air flow switch is provided as standard to ensure air is passing over the electric coil before it will energize. This is to ensure that the electric coil will not energize when the system fan is shut-down or fails.

    1. Locate the room heat loss on the MBH scale on the far left side of the chart. Convert to kWh by moving horizontally to the right to the kWh scale (1kWh = 3.413 MBH)2. Calculate the kWh required to heat the primary air to room temperature using the following equation,

    3. Add the kWh value obtained in the step 2 to the kWh scale at the let side. More horizontally to the right to the point where the kWh value and the air flow volume intersect.

    4. With the point of intersection from step 3, the air temperature rise (ATR), can be obtained by interpolating between the air temperature rise lines on the graph.5. To verify the selection, sum the air temperature rise and the temperature of the primary air. The sum total should be less then 120F.

    Selection ExampleSelect electric coil for a size 10 VAV Terminal with a minimum air flow of600 CFM. Space heat loss is estimated at 18 MBH and space designtemperature is 70F. The temperature of the primary air flow is 60F.

    1. Space heat loss (18 MBH) = 5.2 kWh2. heat required to raise the temperature of primary air:

    3. Total heat required = 5.2 + 1.90 = 7.1 kWh4. Referring to chart, air temperature rise ATR = 35F5. Leaving air temperature = 60F + 35F = 95F. since the leaving air temperature is less than the recommended maximum limit of 120F, the selection is satisfactory6. Select a suitable power supply from the reheat coil selection table7. Verify minimum airflow requirement are met. (minimum 70 CFM/kW)

    Reheat Selection Chart

    VAV Terminal Units

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 4 of 14

    Electric Reheat Coil Selection Table

    600V3.06.011.017.030.049.549.549.5

    Minimum kW Single phase = 0.5 kW/stage, three phase = 1.5 kW/stage. Minimum air velocity should be 1m/s. Minimum air volume must be greater than minimum air volume listed or 70 CFM per kilowatt. Static pressure loss of coil is negligible, therefore the minimum static pressure drop is equal to basic unit value.

    3 Phase415V3.06.011.017.030.034.534.534.5

    208V3.06.011.017.017.017.017.017.0

    277V3.06.011.013.013.013.013.013.0

    Allowable Maximum kW1 Phase240V3.06.09.511.511.511.511.511.5

    120V3.05.05.55.55.55.55.55.5

    Stages

    1,21,2

    1,2,31,2,31,2,31,2,31,2,31,2,3

    CFM Range

    100 - 225100 - 450167 - 800243 - 1350333 - 2100486 - 3000600 - 4000950 - 8000

    Unit Size (inch)

    46810121416

    24 X 16

    Electric Reheat Coil Selection Guide

    kWh = CFM x T3160

    = 85 CFM/kW600 CFM7.1 kW

    kWh = = 1.90kWh600 x 103160

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 6 of 15

    AIR FLOW SENSOR

    PRIMARY AIR

    DAMPERACTUATOR

    CONTROLLER

    DISCHARGE AIR

    COOLING MODE

    CoolOccSpt

    THERMOSTAT

    MAXFLOW(POS)

    MINFLOW(POS)

    AIR FLOW SENSOR

    PRIMARY AIR

    DAMPERACTUATOR

    CONTROLLER

    DISCHARGEAIR

    COOLING MODE

    CoolOccSpt

    THERMOSTAT

    MAXFLOW(POS)

    MINFLOW(POS)

    CONTACTORS

    STAGED REHEAT COIL REHEATMODE

    REHEATFLOW

    STAGE 3STAGE 2STAGE 1 ON

    ONON

    HeatOccSpt

    VAV TERMINAL UNITS

    VAV Controller Control Mode (Cooling Only)

    VAV Terminal Units

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 5 of 14

    This mode is used where only cooling application is required. The controller will modulate the VAV box damper according to the set point and room temperature between the cooling mode minimum and maximum flow setting.

    VAV Controller Control Mode (Cooling With Electric Stages Reheat)

    During this mode, 2 or 3 stages reheat control the heater output by using 2 or 3 stages of heater control at different intervals. The heaters cut-in at different stages depending on the heating set-point of reheat.

    When the room temperature is above the cooling set point, the flow shall be maximum and when the room temperature fall below cooling set point (by more than 1 degree Celsius), the flow will be minimum.

    When the room temperature fall beyond heating set point, the control should automatically increase to auxiliary flow (which is resettable) when the 1st stage of heater cut in. when the room temperature continues to fall, the 2nd heater and 3rd heater will cut in accordingly. The interval for each stage of reheat to cut in is determined by the room temperature and heating set point.

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 7 of 15

    AIR FLOWSENSOR

    CONTROLLER

    PRIMARYAIR

    FAN

    DAMPERACTUATOR FAN

    RELAY

    OPEN TOPLENUM

    VALVE

    REHEATCOIL (OPTIONAL)

    DISCHARGEAIR

    THERMOSTAT

    AIR FLOWSENSOR

    CONTROLLER

    PRIMARYAIR

    FAN

    DAMPERACTUATOR

    FANRELAY

    VALVE

    REHEATCOIL

    DISCHARGEAIR

    THERMOSTAT

    RETURN AIRFROM PLENUM

    VAV TERMINAL UNITS

    VAV Controller Control Mode (Cooling With Series Fan And Reheat)

    VAV Terminal Units

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 6 of 14

    VAV Controller Control Mode (Cooling With Parallel Fan And Reheat)

    At this mode, the fan is intended to run continuously when the main air handler is on and is in-line with the primary air flow through the box. The controller will activate the fan when the primary flow is above minimum flow setting or a pre-determined flow volume, say 50 CFM whichever is higher). The heater will cut in when the room temperature drops below the heating set point.

    A parallel fan is not located in the primary air stream, but is designed to add return air from the plenum into the air stream delivered to the space. The controller turns on the parallel fan when the space temperature falls below set point as a first stage of reheat, or if the air flow falls below a minimum air flow set point to maintain a minimum air flow to the space (parallel flow). The heater will cut in when the room temperature drops below the heating set point.

    AIR FLOW SENSOR

    PRIMARY AIR

    DAMPERACTUATOR

    CONTROLLER

    DISCHARGE AIR

    THERMOSTAT

    COOLING MODE

    CoolOccSpt

    MAX(POS)

    MIN(POS)

    REHEATMODE

    REHEATFLOW

    HeatOccSpt

    VALVE

    FLOATINGACTUATOR

    HOT WATER OR STEAMREHEAT COIL

    Periph Min Pos

    100PERCENTOPEN

    VAV Controller Control Mode (Cooling With Modulating Reheat)

    During this mode, reheat coils or hot water coil are controlled with modulating output from controller.

    When the room temperature is above the cooling set point, the flow shall be maximum and when the room temperature fall below cooling set point (by more than 1 degree Celsius), the flow will be minimum.

    When the room temperature fall beyond heating set point, the air flow should automatically be increased to reheat flow (which is resettable). At the same time, the peripheral output will gradually increase the valve position to increase the hot water volume. Hence the supply air temperature rises.

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 8 of 15

    VAV TERMINAL UNITS

    VAV Terminal Units

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    Performance Data (Radiated Sound Power Levels, Basic Assembly Unit)

    Unit Size

    Ps 125 Pa (0.5" W.G.)Octave Band

    Ps 250 Pa (1.0 W.G.)Octave Band

    Ps 500 Pa (2.0 W.G.)Octave Band

    Ps 750 Pa (3.0 W.G.)Octave BandAir Flow

    Sound Power Level, Lw dB, re 10-12 watts

    4

    6

    8

    10

    12

    14

    16

    24 X 16

    VAV page 7 of 14

    72831343631343739343740424043454738414446483943464850394246495153545645485255

    63538414338414446414447494750525445485153554650535557464953565860616352555962

    54043454743464850464951535254565851545658605256586062525559616365666858616567

    44447515247505455505357585660616255586263645660636566545761646667717260636770

    34750555850535861535661645964676858616669705963677172576064687273777863667074

    24851565951545962545762656065687058616669715963677173576064687274777963667074

    72326313425283336283136393439424632354043473337414549333640444852515539424650

    63033384133364043363943464246495240434750534145495255414448525558586147505458

    53639434639424548424548514851545747505356594852555861485155586164646754576164

    44043485043465052464953555256586051545860625256596264505357606365687056596366

    34548525548515458515457615760646556596266675761646869555862656970747561646871

    24750545749525760525560635863666756596467685761656970555862667071757661646872

    71720283219223034222533372836404426293741452731374347273034404650495333364046

    62629343927303641303339443642475034374348513539455053353842485356565941444854

    53336414534374347374046504349535542455155574347525759434650556062636549525661

    43740454838414750414450534753565946495558614751566063454852576164666951545863

    34447495345485154485154575457606153565962635458616465525559626566707158616568

    24548535647505457505357605660636554576164665559636668535660646769727459626670

    71215253013162631161929342232374320233338442125334046212428364349465227303442

    62124313722253238252835413138444829323945493034414751303337445054535736394350

    52932394430334045333643483946515438414853563943495558394246525861616445485258

    43336424634374347374046504349535742455155594347525761414448535862636747505459

    34245465043464751464950545253575851545559605256596162505357606263676856596366

    24447515445485255485155585458616252555962635357616465515458626566707157606468

    L/s376083106741201662131322142963782233614996383475086698319925297741020126615116619071152139816431889132218132304279632873778

    CFM7912817622515825535345028045362780047376510581350735107614181759210011201640216026803200140019202440296034804000280038404880592069608000

    Ps is the difference in static pressure from inlet to discharge of the unit.

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 9 of 15

    VAV TERMINAL UNITS

    VAV Terminal Units

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    Performance Data (Discharge Sound Power Levels, Basic Assembly Unit)

    Unit Size

    Ps 125 Pa (0.5" W.G.)Octave Band

    Ps 250 Pa (1.0 W.G.)Octave Band

    Ps 500 Pa (2.0 W.G.)Octave Band

    Ps 750 Pa (3.0 W.G.)Octave BandAir Flow

    Sound Power Level, Lw dB, re 10-12 watts

    4

    6

    8

    10

    12

    14

    16

    24 X 16

    VAV page 8 of 14

    75054606153576364586166676466676864666869706567697071687172676971747778737577

    65458646755596568606366696667677067697070736971727275697275717374757881777980

    55660666957616770626568716869697269717272757173747477707375767679767981828285

    45458666955596770606368716668697267697172756971737477687173757679747779818285

    35660656560646969656872727173757570727476767173757777707375777979727577798181

    25357636757616771626570746870737769717376807173757882707375778084717476788185

    74347545746505659515458615759606354565859635859626366606264616266666870676872

    64751586149535962545760636061616558606262656264666669636668666769697274727375

    54953616450546265555863666163646760626464686466686872646769707074707375767680

    44953616550546266555863676163646860626465706466686973646769707175707375767781

    35155606255596466606367696668707264666870726668707274666971727476707274767779

    25054596354586367596266706566697364666870746769717478677072737680707374767882

    73741475238424954434651564952535849515354595052545560525456555661586062616267

    64145515542465357475054585355565954565758625658596064575962616265636568676871

    54347556044485661495257625558586355576061655759626367586064646569646670707175

    44549576246505863515459645759606557596162675961636469606264656671666870717277

    34751565951556063565963666264666961636567706264666871636466686972676971727477

    24650555950545963555862666163656962646567716466676973656768707175697173747680

    73034414831354249363943504245465341434647544344474855444548494956505154555562

    63438454936404751414448524749505447495152564951535458515355565660575961626266

    53640505537415156424552574852535848505455605052565762525458595964586064656570

    44044525841455359464954605254556152545657635456585965565860616167626466676773

    34246515646505560515458635759616656586062675759616368596062636469656668697075

    24347515547515559525558625859616558606163676062636569626465666771687071727377

    L/s376083106741201662131322142963782233614996383475086698319925297741020126615116619071152139816431889132218132304279632873778

    CFM7912817622515825535345028045362780047376510581350735107614181759210011201640216026803200140019202440296034804000280038404880592069608000

    Ps is the difference in static pressure from inlet to discharge of the unit.

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 10 of 15

    VAV TERMINAL UNITS

    VAV Terminal Units

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    Performance Data (Typical Selection Guide)

    Unit Size Air Flow

    4

    6

    8

    10

    12

    14

    16

    24 X 16

    NC are derived from sound power level, which are obtained in accordance with ARI standard 885-98. Ps is the difference in static pressure from inlet to discharge of the unit. Pt is the difference in total pressure from inlet to discharge of the unit. Ps for terminal units with electric coils is equal to basic unit. Resistance of the coil elements is negligible. Dash(-) in space indicates NC less than 20.

    VAV page 9 of 14

    -20242820232832232732353035383929323740423034384344283135394445343742485253

    --

    2124--

    2328-

    2327322730353625293337382732353940242833364042323539434849

    ---

    22--

    2023--

    23272327303322252933352328323537202429333638283236394345

    -------

    20---

    2320222731-

    232429332025293235-

    2227303336252934373943

    --------------

    2226---

    2428--

    242730--

    22252831202429323438

    2024293020242930222429302830313227293134352830323334252830343536353840424344

    --

    2427--

    2325--

    222422242528-

    202226292223262830192224283032283133353538

    ---

    22---

    21---

    20--

    2024---

    2326--

    202326---

    232428232628303235

    ---------------

    20----

    23----

    23-----

    24212225262733

    ----------------------------------

    20212228

    2226313225293435303237383335363733353738393234363738313436383940374042444546

    3.0"W.G.750Pa

    --

    2629-

    222830232630322729303324262830332627303234252830323436303335373740

    2.0"W.G.500Pa

    ---

    24--

    2126--

    232820232529-

    22242730-

    22242730202224272832252830323437

    ---

    20---

    21---

    23---

    25---

    2027---

    2027---

    202228232427282935

    --------- ----------

    21----

    21-----

    23--

    22232430

    143567112113171128102447831126539213254165961632538512814253957811121427456897136

    0.060.140.270.450.040.120.280.510.040.090.190.330.050.110.210.370.050.100.170.260.390.060.130.210.340.520.060.100.160.230.320.450.060.110.180.270.390.55

    2251027255322616226162224102226162222512259152440

    0.010.010.020.040.010.030.100.210.010.010.020.060.010.010.020.060.010.010.010.020.040.010.010.010.020.060.010.010.010.010.020.050.010.020.040.060.100.16

    2251027255322616226162224102226162222512259152440

    0.010.010.020.040.010.030.100.210.010.010.020.060.010.010.020.060.010.010.010.020.040.010.010.010.020.060.010.010.010.010.020.050.010.020.040.060.100.16

    376083106741201662131322142963782233614996383475086698319925297741020126615116619071152139816431889132218132304279632873778

    7912817622515825535345028045362780047376510581350735107614181759210011201640216026803200140019202440296034804000280038404880592069608000

    MinimumPs Across

    UnitBasic unit

    MinimumPs AcrossUnit With Attenuator

    Min PtBasic Unit

    Discharge NCBasic Unit

    Ps Across unit

    Discharge NCc/w 36" AttenuatorPs Across unit

    Radiated NCBasic Unit

    Ps Across unit0.5"W.G.125Pa

    Min

    W.G PaW.G PaW.G PaCFM L/s

    1.0"W.G.250Pa

    3.0"W.G.750Pa

    2.0"W.G.500Pa

    0.5"W.G.125Pa

    Min

    1.0"W.G.250Pa

    3.0"W.G.750Pa

    2.0"W.G.500Pa

    0.5"W.G.125 Pa

    Min

    1.0"W.G.250Pa

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 11 of 15

    Suggested Specification

    General Variable Air Volume (VAV) units shall be fully/truly pressure independent with multi-point velocity sensor, detachable flow transmitter, 3 point floating electric actuator,

    room thermostat, and open protocol LonMark DDC (direct digital control) controller. The unit including all the control components shall be supplied, installed and the complete unit tested at the factory by a qualified VAV manufacturer. A qualified VAV

    manufacturer shall have both good manufacturing facility and a pressure independent test laboratory for variable air volume testing. The warranty of the complete unit including the controls shall be the sole responsibility of the supplier. The calibration of the VAV units shall be conducted in accordance with Industry Standard for Air Terminals Standard ARI 880 published jointly by Air Diffusion Council

    (ADC) and Air conditioning and Refrigeration Institute (ARI). The manufacturer shall maintain an air distribution laboratory capable of performing full testing of pressure independent boxes and airflow accuracy test.

    Basic Assembly The basic assembly shall be constructed of galvanized steel, not less than 0.7mm (24ga.) thickness. Internal insulation shall be at least 25mm, 32kg/cu.m density fiberglass black tissue to prevent erosion. The damper shall be of heavy gauge metal, with peripheral tear resistant Neoprence lip seal to ensure a tight air seal at full shut off position. Damper shaft shall have

    damper position indicator and of square shape to ensure a fool proof grip between damper and electric actuator. Round shaft shall not be accepted. All control components shall be mounted inside a protective metal shroud.

    Pressure Requirement The static pressure drop across the terminal unit shall not be more than 53Pa (0.22 in. W.G.) at the selected design air flow. The pressure independence shall be achieved using a differential pressure type velocity sensor on a feed forward control loop. The velocity sensor shall be a differential pressure multi-point sensing type using the reliable pitot tube concept for air flow measurement. The high and low tubing connection shall be air tight to prevent leakage affecting the accuracy of the air flow measurement. Airflow measurement accuracy must be

    within +/- 5%.

    Noise Sound power level in each octave band 2 through 6 shall not exceed the following when operating at the rated air flow rate with 125Pa (0.5 in W.G.) static pressure

    across the terminal unit:

    Controls The VAV controller shall be Lon based microprocessor based direct digital control (DDC) with open system concept to ensure ease of interfacing on site with others. Each VAV unit shall have its own dedicated, stand-alone microprocessor-based, truly independent LonMark open system controller. Each VAV controller shall accept standard thermistor input for temperature sensing. All the VAV units shall be capable of stand-alone or networking operation. In networking mode, the DDC controller shall be truly open to be freely integrated to existing

    LonWork BAS without any additional hardware or software. As a minimum, the user shall have the capability of monitoring the following dynamics up-dated information through each of the operator interface devices :-

    - zone temperature - actual live airflow - desired set-point airflow - cooling set-point etc - operating mode

    The room thermostat shall have a LCD display for room temperature and set point adjustment capability. The controller shall have an overriding function to occupied/unoccupied mode. As a minimum the user shall have the ability to monitor and control the following set-points through each of the operator interface devices :-

    - cooling set-point - minimum and maximum air flows - neutral zone - occupied/unoccupied time schedule - room temperature - live actual air flow

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 12 of 15

    Control ComponentsASLI VAV terminal units are compatible with virtually all VAV controllers and thermostats. Below are some of the VAV controllers and thermostats combination that ASLI offers. Please contact ASLI sales representative for more information of the control components.

    Alerton BACtalk VAVi-SDThe Alerton BACtalk VAVi-SD controller with integrated actuator is a versatile BACnet-compliant controller, providing pressure independent control of any single-duct Variable Air Volume (VAV) box. As a native BACnet controller, the VAVi-SD integrates seamlessly with BACnet system, communicating up to 76.8 Kbps on a BACnet MS/TP LAN.

    BACtalk Microset IIBACtalk Microset II Wall UnitBACtalk Microset II is an intelligent and attractive programmable wall unit that updates the functions of a typical thermostat. Microset II connects to Alertons BACtalk VisualLogic Controllers (VLCs) and serves as a tenant control center and field service tool. Sleek styling, a backlit Liquid Crystal Display (LCD) and simple pushbutton controls make operation intuitive. The LCD simultaneously displays the setpoint, room and outside air temperatures in Fahrenheit or Centigrade and fan status.

    Trend IQLVAVIQLVAV is a terminal unit controller with an integral damper actuator for pressure -independent VAV applications. The IQLVAV supports communication with other IQL and LonMark devices over a LonWorks network. A LINC unit provides an interface to other Trend IQ system current-loop networked devices.

    SDU-LONThe SDU-LON, Smart Display Unit, enables the user to view and adjust selected parameters (sensors, knobs, drivers, switches, digital inputs) via a 4 x 20 character electro-luminescent display, and four illuminated push buttons. It provides the IQLVAV with a real time clock, a time zone, and a calendar. It is associated with a particular IQLVAV either using a combination of the push-buttons or using IQLTool2. SDUs also support password protection, using the controllers built-in security.

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 13 of 15

    Control ComponentsASLI VAV terminal units are compatible with virtually all VAV controllers and thermostats. Below are some of the VAV controllers and thermostats combination that ASLI offers. Please contact ASLI sales representative for more information of the control components.

    Siemens GDB181.1E/3Compact controllers for plants with variable and constant air volume with the air volume as an auxiliary variable. Comprised of pressure difference sensors, digital air volume controller and actuator; Operating voltage AC 24 V; P-response, nominal torque 5/10 Nm, air damper working range mechanically adjustable between 0 and 90, prewired with 0.9 m long connecting cable. Suitable for stand alone system

    ALE05UThe ALE05U series is a microprocessor based wall mounted proportional integral (PI) temperature controller for controlling fan coil unit heating and cooling applications. It has a large and clear LCD display which is both aesthetic in design and user friendly in operation.

    Belimo NMV-D2MThe VAV-Compact NMV-D2M controller has PI control characteristics and is used for the pressure independent control of VAV air control units. Stepped-mode constant flow control e.g. switch or clock program. Variable flow with modulating reference variable based on, for example, temperature, occupancy, room thermostat, DDC or LONWORKS system, allowing demand-related, energy-saving ventilation of individual rooms or zones of air-conditioning systems. Maintenance-free sensor technology, thoroughly proven in a great variety of previous applications, means that the controllers can offer total reliability and dependability in various climate conditions.

    ALE05UThe ALE05U series is a microprocessor based wall mounted proportional integral (PI) temperature controller for controlling fan coil unit heating and cooling applications. It has a large and clear LCD display which is both aesthetic in design and user friendly in operation.

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 14 of 15

    Control ComponentsASLI VAV terminal units are compatible with virtually all VAV controllers and thermostats. Below are some of the VAV controllers and thermostats combination that ASLI offers. Please contact ASLI sales representative for more information of the control components.

    Matrix UAV0560LUAV0560L is an application specific DDC for pressure independent variable Air Volume Terminal Boxes. It can work as a stand-alone controller as well as a controller on a twisted-pair, unpolarized, free topology network. UAV0560L has an on-board differential pressure transducer to measure airflow through the VAV terminal box via a differential pressure pitol tube sensor within the box. The controller has two triac outputs for driving floating position damper actuator, and four additional triac outputs for heaters, fan and hot water valve control. UAV0560L is a LonMarkTM compliant controller designed to communicate on LonTalkTM open system network.

    SAV3HDThe SAV3HD is a wall mount command module with display for Variable Air Volume terminal boxes. SAV3HD works in conjunction with VAV Controllers such as Matrix iS21 UAV0520L & UAV0506L in local mode stting by exchanging the zone temperature, temperature set-point, bypass time via hard wire. It has a 92mm x 50mm LCD screen to display the time & date of the day, zone temperature and remaining bypass time.

    Invensys Micronet LonMark VAV SeriesThe I/A Series MicroNet LONMARK VAV Series (Variable Air Volume) Controllers are interoperable, LONMARK-compliant controllers. When programmed using WorkPlace Tech Tool or loaded with a pre-engineered application, they provide a wide range of control strategies for pressure independent terminal boxes with, or without, reheat capabilities. Both models provide an integral actuator with manual override, an integral patented pressure transducer, one digital input, one universal input, Sensor Link (S-Link) support, LED indication, and over-the-shaft damper mounting. In addition, the MNL-V2RVx model provides one analog output and three digital outputs. These controllers can function either in a standalone mode or as part of a LONWORKS FTT-10 Free Topology communications network.

    Invensys Micronet SensorThe I/A Series MicroNet Sensors (MN-SXXX series) are a family of digital wall temperature and humidity sensors for use with I/A Series MicroNet controllers. These sensors feature a Sensor Link (S-Link) communication protocol which provides a simple two-wire interface for power and exchange of sensor and subbase information. Subbase information includes selecting occupancy override, fan speed, operating mode, or emergency heat. Available in twelve models, MN-SXXX series sensors provide an integral analog-to-digital conversion for elimination of sensor-to-controller noise effects and wire resistance offset.

  • VAV Terminal Units

    VAV TERMINAL UNITS

    All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

    VAV page 15 of 15

    Control ComponentsASLI VAV terminal units are compatible with virtually all VAV controllers and thermostats. Below are some of the VAV controllers and thermostats combination that ASLI offers. Please contact ASLI sales representative for more information of the control components.

    Honeywell Excel 10Honeywells Excel 10 VAV Box Controller is an excellent, low-cost control solution for any size commercial building. The standard energy-saving setpoint reset options, open communications protocol and low-cost mounting design, make this controller a smart choice for all the right reasons. Suitable for LONWORKS network.

    Thermostat T7770The T7770 are direct-wired wall modules used in conjunction with W7751B,D,F,H Controllers. The zone controlled by the W7751 Controllers will typically use a T7770 wall module with a temperature sensor for space temperature measurement in a minimum system configuration. Additional features available in the T7770 model include analog setpoint input, override digital input pushbutton, override status LED and E-Bus network access jack.

    Yamatake VAV Controller with Damper ActuatorInfilex VC Model WY5306C is a damper actuator with DDC (direct digital control) inside that controls a VAV (variable air volume) unit in a building air-conditioning system. Infilex VC, integrated in a VAV unit cost-effectively controls temperature plus air volume. Comfort therefore is compatible with energy saving. Besides, Infilex VC offers building owners and operators the flexible and high-performance controls of various VAV units. It is a LONMARK certified product.

    Neoplate QY7290The QY7290 Neoplate is a user terminal for use with specific Yamatake controllers. Neoplate is designed to look like regular lighting switch and ensures complete compatibility with any interior design. The temperature set point change based on absolute value, relative value or perception of temperature.