Single-Duct. Table of Contents. Model Number Description SD 2 3. Service Model Number Description SD 4. Selection Procedure SD 5 6

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1 Table of Contents Model Number Description SD 2 3 Service Model Number Description SD 4 Selection Procedure SD 5 6 General Data Valve/Controller Airflow Guidelines SD 7 Performance Data Pressure Requirements SD 8 10 Performance Data Hot Water Coil SD Performance Data Electric Data SD Performance Data Acoustics SD Dimensional Data SD Mechanical Specifications SD SD 1

2 Model Number Description Single-Duct VAV Terminal Units The features of the single-duct VAV terminal units are described by the product categories shown in bold. Within each category the available options are listed. VCCF VCWF VCEF MODL Unit Model VCCF Single-duct cooling-only terminal VCWF Single-duct with hot water heat VCEF Single-duct with electric heat DSEQ Design Sequence Design sequence INLT Primary Inlet 04 4" inlet 05 5" inlet 06 6" inlet 08 8" inlet 10 10" inlet 12 12" inlet 14 14" inlet 16 16" inlet 24RT 24" x 16" inlet INSL Unit Insulation MT.5 1/2" matte-faced MT1 1" matte-faced FF.5 1/2" foil-faced FF1 1" foil-faced DW1 Dual-wall w/ 1" matte-faced FBRF 3/8" closed-cell CONTROLS Trane-Supplied Controls DD00 Trane actuator only DD01 DDC w/o remote heat DD02 N.C. on/off hot water valve control DD03 Proportional hot water valve control DD04 On/off electric heat control DD05 Pulse-width modulation control DD07 N.O. on/off hot water valve control EI05 Basic operation w/ reheat capability EI28 Basic operation w/ reheat capability & auto-dual minimum EI29 Basic operation w/ reheat capability & constant volume PN00 Pneumatic normally-open actuator only PN04 Pneumatic N.O. actuator, PN PVR, d.a. stat Pneumatic N.O. actuator, 3011 PVR, r.a. stat PN11 Pneumatic N.O. actuator, w/ auto-dual minimum PN32 Pneumatic N.O. actuator, w/ PVR constant volume d.a. stat PN34 Pneumatic N.O. actuator, w/ PVR constant volume r.a. stat PC00 PC04 PC05 Pneumatic normally-closed actuator only Pneumatic N.C. actuator, 3011 PVR, d.a. stat Pneumatic N.C. actuator, 3011 PVR, r.a. stat CONTROL1 Customer-Supplied Controls/No Controls PNON Shaft only pneumatic controls by others ENON Shaft only electric controls by others VMA1 FM Johnson VMA-1410 VMA2 FM Johnson VMA-1420 PWR1 FM Seimens w/ GDE131.1P actuator PWR4 FM Seimens w/ Trane actuator PWR5 FM Seimens w/ GDE131.1U actuator AT01 FM Automated Logic U341V+ AT02 FM Automated Logic U141V+ FM00 Factory installation of other s actuator and controller FM01 Factory installation of Trane s actuator and other s controller CONN Control & Coil Connection Side LEFT Left side OPP Opposite side connection coil and control PLNM Outlet Plenum A 1 outlet RH B 1 outlet END C 1 outlet LH D 2 outlets 1 RH, 1 END E 2 outlets 1 LH, 1 END F 2 outlets 1 RH, 1 LH H 3 outlets 1 LH, 1 RH, 1 END J 4 outlets 1 LH, 1 RH, 2 END SIZE Outlet Size 5WO 5" outlet w/o balancing damper 5W 5" outlet w/ balancing damper 6WO 6" outlet w/o balancing damper 6W 6" outlet w/ balancing damper 8WO 8" outlet w/o balancing damper 8W 8" outlet w/ balancing damper 10WO 10" outlet w/o balancing damper 10W 10" outlet w/ balancing damper HWCL Hot Water Coil 1ROW 1-row hot water coil 2ROW 2-row hot water coil XFMR Transformer /24-volt transformer /24-volt transformer /24-volt transformer /24-volt transformer /24-volt transformer /24-volt transformer /24-volt transformer /24-volt transformer DISW Power Disconnect Switch WITH Power disconnect switch FUSE Power Fuse WITH Power fuse SD 2

3 Model Number Description VOLT Electric Heater Voltage volt, 1-phase volt, 3-phase volt, 1-phase volt, 1-phase volt, 1-phase volt, 3-phase volt, 1-phase volt, 3-phase volt, 3-phase STGE Electric Heater Stage 1 1 stage of heat 2 2 equal stages of heat 3 3 equal stages of heat HTKW Electric Heater Kilowatts kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw kw CNTR Electric Heater Control MAGN 24-volt magnetic contactors MERC 24-volt mercury contactors PEMA P.E. w/ magnetic contactors PEME P.E. w/ mercury contactors SD 3

4 Service Model Number Description Digit 1, 2 Unit Type VC VariTrane single-duct Digit 3 Reheat C Cooling Only E Electric Heat W Hot Water Heat Digit 4 Development Sequence F Sixth Digit 5, 6 Primary Air Valve 04 4" inlet (225 cfm) 05 5" inlet (350 cfm) 06 6" inlet (500 cfm) 08 8" inlet (900 cfm) 10 10" inlet (1400 cfm) 12 12" inlet (2000 cfm) 14 14" inlet (3000 cfm) 16 16" inlet (4000 cfm) 24 24" x 16" inlet (8000 cfm) Digit 7, 8 Not Used 00 N/A Digit 9 Not Used 0 N/A Digit 10, 11 Design Sequence C0 Third (factory assigned) Digit 12, 13, 14, 15 Controls ENON No controls, field-installed DDC/electric PNON No controls, field-installed pneumatic DD00 Trane elec actuator only DD01 DDC Cooling only DD02 DDC N.C. on/off water valve DD03 DDC Prop hot water valve DD04 DDC On/off electric heat DD05 DDC Pulse-width modulation electric heat DD07 DDC N.O. on/off water valve FM00 FM Customer-supplied actuator & controller FM01 FM Trane actuator w/ customer-supplied controller VMA1 FM Johnson controls VMA2 SD 4 VMA-1410 FM Johnson controls VMA-1420 PWR1 FM Seimens w/ GDE131.1P actuator PWR4 FM Seimens w/ Trane actuator PWR5 FM Seimens w/ GDE131.1U actuator AT01 AT02 EI05 EI28 EI29 PC00 PC04 FM Automated Logic U341V+ FM Automated Logic U141V+ Analog On/off reheat Analog On/off reheat with dual-minimum cfm Analog On/off reheat with constant-volume cfm PN N.C. Trane pneumatic actuator PN N.C. with on/off HW, DA Stat PC05 PN N.C. with on/off electric, RA Stat PN00 PN N.O. Trane pneumatic actuator, RA Stat PN04 PN N.O. PVR, DA Stat PN05 PN N.O. PVR, RA Stat PN11 PN N.O. dual-minimum cfm, DA Stat PN32 PN Water Valve, N.O. constant volume, DA Stat PN34 PN Electric heat, N.O. constant volume, DA Stat Notes: N.C. = Normally-closed N.O. = Normally-opened DA Stat = Direct-acting pneumatic t-stat (by others) RA Stat = Reverse-acting pneumatic t-stat (by others) PN = Pneumatic FM = Factory installation of customersupplied controller Digit 16 Insulation A 1/2" Matte-faced B 1" Matte-faced C 1/2" Foil-faced D 1" Foil-faced F 1" Double-wall G 3/8" Closed-cell Digit 17 Not Used 0 N/A Digit 18 Not Used 0 N/A Digit 19 Outlet Plenum (Connection is Slip & Drive) 0 None A 1 Outlet RH B 1 Outlet END C 1 Outlet LH D 2 Outlets, 1 RH, 1 END E 2 Outlets, 1 LH, 1 END F 2 Outlets, 1 RH, 1 LH H 3 Outlets, 1 LH, 1 RH, 1 END J 4 Outlets, 1 LH, 1 RH, 2 END Note: See unit drawings for outlet sizes/ damper information. Digit 20 Not Used 0 N/A Digit 21 Water Coil 0 None 1 1-Row 2 2-Row Digit 22 Electrical Connections (VCCF can be flipped in the field to achieve opposite-hand connection) L Left (Airflow hitting you in the face) 0 Opposite side connection coil and control Digit 23 Transformer 0 None 1 120/24 volt (50 VA) 2 208/24 volt (50 VA) 3 240/24 volt (50 VA) 4 277/24 volt (50 VA) 5 480/24 volt (50 VA) 6 347/24 Volt (50 VA) 7 575/24 Volt (50 VA) 8 380/24 Volt (50 VA) Note: For VCEF units with transformers the VA depends on the staging, control, and contactor type (ranges are 40 VA to 75 VA) Digit 24 Power Disconnect 0 None W With Digit 25 Power Fuse 0 None W With Digit 26 Electric Heat Voltage 0 None A 208/60/1 B 208/60/3 C 240/60/1 D 277/60/1 E 480/60/1 F 480/60/3 G 347/60/1 H 575/60/3 J 380/50/3 Digit 27, 28, 29 Electric Heat kw 000 None kw kw kw kw Notes: 0.5 to 8.0 kw ½ kw increments 8.0 to 18.0 kw 1 kw increments 18.0 to 46.0 kw 2 kw increments Digit 30 Electric Heat Stages 0 None 1 1 Stage 2 2 Stages Equal 3 3 Stages Equal Digit 31 Contactors 0 None 1 24-volt magnetic 2 24-volt mercury 3 PE with magnetic 4 PE with mercury Digit 32 Not Used 0 N/A

5 Selection Procedure This section describes the catalog selection of single-duct VAV terminal units with specific examples. A computer selection program is also available to aid in selection of VAV terminal units. Selection of single-duct VAV terminal units can involve three elements: Air valve selection Heating coil selection (if required) Acoustics Air Valve Selection The wide-open static pressure and airflows are found in the performance data section of the catalog. To select an air valve, locate the required design cooling airflow for your terminal unit type and find the smallest air valve size that has a pressure drop equal to or lower than the maximum wide-open static pressure requirement. Selection Example Cooling Only VCCF Terminal Unit Design cooling airflow: 1700 cfm Maximum wide open Air pressure drop: 0.25 in. wg Minimum cooling airflow: 850 cfm From the performance data charts, select a valve size 12, which has a wideopen static pressure drop of 0.01 in. wg Check the minimum and maximum cfm desired with the minimum and maximum cfm allowed in the table in the general data section. The maximum setting of 1700 cfm is within the acceptable range. The desired minimum setting of 850 cfm is acceptable for the cooling only box desired. Note that if an electric reheat box was selected, the minimum cfm would be dependent upon the kw of the electric heater. (See Electric Heat Unit Selection.) Heating Coil Selection (If required) First, determine the amount of heat required to meet space and downstream duct heat losses from a load calculation. Hot Water Heat Select a hot water coil sufficient to meet the design heat loss. Example: VCWF, Hot Water Unit Heat, Size 12 (See air Valve Selection) Heating airflow: 850 cfm Hot water flow: 1.0 gpm Design Heat Loss: Q =25 MBh Select hot water coil from the coil performance table in the Performance Data section of the catalog. Selection: A one-row coil is sufficient to meet design conditions. From the Hot Water Coil Capacity Data of the Performance Data Section, a one-row coil for a size 12 air valve will operate at the above conditions as follows: Coil Capacity: MBh Water pressure drop: 0.72 ft WPD Air pressure drop (APD) of the hot water coil is included in the chart preceding the hot water coil performance data section. APD = 0.35 in. wg Electric Heat Determine the kw required to meet zone design heat loss. kw = MBh / MBh = Design Heat Loss Select the nearest available kw with voltage and steps desired from the electric heater kw guideline table in the Performance Data section of the catalog. Example: VCEF, Electric Unit Heat, Size 12 (See Air Valve Selection) Heating airflow: 850 cfm Voltage: 277/60/1 VAC Design Heat Loss: Q = 25 MBh kw = Q/3.414 kw = 25/3.414 kw = 7.3 Selection: Select 7.5 kw from the electric heat table in the voltage and stages required. The table shows the minimum cfm allowable for the kw selected. The static pressure requirement is shown as 0.06 in. wg for this example with a design cooling flow of 1700 cfm. Check Leaving Air Temperature: LAT = T is the primary entering air temperature 55 F for this example. LAT = Q x CFM + T 3414 x = x 850 Decide if leaving air temperature of 82.8 F is satisfactory for your application. Acoustics The acoustical data found in the "Performance Data" section of the VAV catalog is used to make a determination of the amount of noise the terminal unit will generate. Locate the table for the VAV terminal unit of interest. Sound power data and an equivalent NC level for an ARI transfer function is listed. Example: VCCF, Cooling-Only Terminal Unit, Size 10 (See air Valve Selection) Cooling Airflow: 1100 cfm Maximum inlet static pressure: 1.5 in. wg Interpolation gives sound power data of: Octave NC Band Disch Sound Power Rad Sound Power The NC level above is determined by using either the catalog s ARI (mineral fiber for radiated sound) transfer function for the conditions shown in the acoustics table. A different transfer function could be applied as conditions dictate. The maximum NC level is NC-37. If the maximum NC level was exceeded, it would have been necessary to reselect the next larger unit size. Computer Selection The advent of personal computers has served to automate many processes that were previously repetitive and time-consuming. One of those tasks is the proper scheduling, sizing, and selection of VAV terminal units. Trane has developed a computer program to perform these tasks. The software is called the Trane Official Product Selection System (TOPSS). The TOPSS program will take the input specifications and output the properly sized VariTrane VAV terminal unit along with the specific performance for that size unit. The program has several required fields, denoted by red shading in the TOPSS screen, and many other optional fields to meet the criteria you have. Required values include maximum and minimum airflows, control type, and model. If selecting models with reheat, you will be SD 5

6 Selection Procedure required to enter information to make that selection also. The user is given the option to look at all the information for one selection on one screen or as a schedule with the other VAV units on the job. The user can select single-duct, dualduct, and fan-powered VAV boxes with the program, as well as most other Trane products, allowing you to select all your Trane equipment with one software program. The program will also calculate sound power data for the selected terminal unit. The user can enter a maximum individual sound level for each octave band or a maximum NC value. The program will calculate acoustical data subject to default or user supplied sound attenuation data. Schedule View The program has many time-saving features such as: Copy/Paste from spreadsheets like Microsoft Excel Easily arranged fields to match your schedule Time-saving templates to store default settings The user can also export the Schedule View to Excel to modify and put into a CAD drawing as a schedule. Specific details regarding the program, its operation, and how to obtain a copy of it are available from your local Trane sales office. Required entry fields (in Red on TOPSS screen). Rearrange what fields you see and in what order with a few clicks of a button. SD 6

7 General Data Valve/Controller Airflow Guidelines Primary Airflow Control Factory Settings I-P Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume Type Size (in.) Cfm Cfm Cfm Cfm , , , Direct Digital Control/ , UCM , , , , x , , , , Pneumatic with , Volume Regulator , , , , x , , , , Analog Electronic , , , , , x , Primary Airflow Control Factory Settings SI Control Air Valve Maximum Valve Maximum Controller Minimum Controller Constant Volume Type Size (in.) L/s L/s L/s L/s , , , Direct Digital Control/ , UCM , , , , x , , , , Pneumatic with , Volume Regulator , , , , x , , , , Analog Electronic , , , , , x , Note: Maximum airflow must be greater than or equal to minimum airflow. SD 7

8 Performance Data Pressure Requirements Air Pressure Drop in. wg (I-P) Inlet Airflow Cooling Hot Water Electric Size Cfm Only 1-row coil 2-row coil Heat x Air Pressure Drop Pa (SI) Inlet Airflow Cooling Hot Water Electric Size L/s Only 1-row coil 2-row coil Heat x Note: Hot water pressure drops are for the entire unit, not just the coil. To calculate the hot water coil only pressure drop, subtract the cooling only pressure drop from the other pressure drop. SD 8

9 Performance Data Pressure Requirements (I-P) Integral Outlet Plenum Air Pressure Drop in. wg (I-P) Outlet Inlet Outlet Diameter Airflow (Cfm) Size Configuration (in.) ,5,6 A,C ,5, ,10 AC ,5,6 B ,5, B ,5,6 D,E ,5, D, E D, E D, E ,5,6 F ,5,6, ,10 F , F ,5,6 H H H H J OUTL CONVERSION CHART SYMBOL NOMINALØ I 5" (127 mm) 6" (152 mm) II III IV 8" (203 mm) 10" (254 mm) OUTLET AVAILABILITY CHART - SEE OUTL CONVERSION FOR NOMINALØ VALV 4 OUTL A,B,C D,E,F H J I, II I, II I, II III III, IV IV I, II I, II I, II I, II, III II, III, IV III, IV I, II I, II I, II I, II, III II, III, IV III, IV N/A N/A N/A N/A I I, II OUTLET PLENUM ARRANGEMENTS A B C D (TOP VIEW) E F H J SD 9

10 Performance Data Pressure Requirements (SI) Integral Outlet Plenum Air Pressure Drop Pa (SI) Outlet Inlet Outlet Diameter Airflow (L/s) Size Configuration (mm) ,5,6 A,C ,5, ,10 AC ,5,6 B ,5, B ,5,6 D,E ,5, D, E D, E D, E ,5,6 F ,5,6, ,10 F , F ,5,6 H H H H J OUTL CONVERSION CHART SYMBOL NOMINALØ I 5" (127 mm) 6" (152 mm) II III IV 8" (203 mm) 10" (254 mm) OUTLET AVAILABILITY CHART - SEE OUTL CONVERSION FOR NOMINALØ VALV 4 OUTL A,B,C D,E,F H J I, II I, II I, II III III, IV IV I, II I, II I, II I, II, III II, III, IV III, IV I, II I, II I, II I, II, III II, III, IV III, IV N/A N/A N/A N/A I I, II OUTLET PLENUM ARRANGEMENTS A B C D (TOP VIEW) E F H J SD 10

11 Performance Data Hot Water Coil (I-P) Inlet Size 04, 05, 06 (I-P) Water Pressure Airflow (Cfm) Rows Gpm Drop (ft) Row Capacity MBH Row Capacity MBH Applicable Range Size 04 Size 05 Size 06 Inlet Size 08 (I-P) Water Pressure Airflow (Cfm) Rows Gpm Drop (ft) Row Capacity MBH Row Capacity MBH Inlet Size 10 (I-P) Water Rows Gpm Drop (ft) Row Capacity MBH Row Capacity MBH Notes: 1. Fouling Factor = Capacity based on 55 F entering air temperature and 180 F entering water temperature. Refer to correction factors for different entering conditions on page The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD). LAT = EAT + Pressure Airflow (Cfm) MBH x ( WTD = EWT - LWT = Cfm ) 2 x MBH Gpm ( ) SD 11

12 Performance Data Hot Water Coil (I-P) Inlet Size 12 (I-P) Water Pressure Airflow (Cfm) Rows Gpm Drop (ft) Row Capacity MBH Row Capacity MBH Inlet Size 14 (I-P) Water Pressure Airflow (Cfm) Rows Gpm Drop (ft) Row Capacity MBH Row Capacity MBH Inlet Size 16 (I-P) Water Pressure Airflow (Cfm) Rows Gpm Drop (ft) Row Capacity MBH Row Capacity MBH Notes: 1. Fouling Factor = Capacity based on 55 F entering air temperature and 180 F entering water temperature. Refer to correction factors for different entering conditions on page The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD). LAT = EAT + MBH x ( WTD = EWT - LWT = Cfm ) 2 x MBH Gpm ( ) SD 12

13 Performance Data Hot Water Coil (I-P) Inlet Size 16x24 (I-P) Water Pressure Airflow (Cfm) Rows Gpm Drop (ft) Row Capacity MBH Row Capacity MBH Notes: 1. Fouling Factor = Capacity based on 55 F entering air temperature and 180 F entering water temperature. Refer to correction factors for different entering conditions on page The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD). LAT = EAT + MBH x ( WTD = EWT - LWT = Cfm ) ( 2 x MBH Gpm Temperature Correction Factors for Water Pressure Drop (ft) Average Water Temperature Correction Factor Temperature Correction Factors for Coil Capacity (MBH) Entering Water Minus Entering Air Correction Factor ) Coil Only Water Weights Internal Internal Operating Inlet Coil Volume Volume Weight Size Type (in. 3 ) (Gal.) (lbs) 04 1-Row Row Row Row Row Row Row Row x 16 1-Row Row Row Row Row Row Row Row Row x 16 2-Row SD 13

14 Performance Data Hot Water Coil (SI) Inlet Size 04, 05, 06 (SI) Water Pressure Airflow (L/s) Rows L/s Drop (kpa) Row Capacity kw Row Capacity kw Applicable Range Size 04 Size 05 Size 06 Inlet Size 08 (SI) Water Pressure Airflow (L/s) Rows L/s Drop (kpa) Row Capacity kw Row Capacity kw Inlet Size 10 (SI) Water Rows L/s Drop (kpa) Row Capacity kw Row Capacity kw Notes: 1. Fouling Factor = Capacity based on 12 C entering air temperature and 82 C entering water temperature. Refer to correction factors for different entering conditions on page The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD). LAT = EAT + ( Pressure Airflow (L/s) ( (4.19) L/s ) kw x 0.83 WTD = EWT - LWT = L/s ) kw SD 14

15 Performance Data Hot Water Coil (SI) Inlet Size 12 (SI) Water Pressure Airflow (L/s) Rows L/s Drop (kpa) Row Capacity kw Row Capacity kw Inlet Size 14 (SI) Water Pressure Airflow (L/s) Rows L/s Drop (kpa) Row Capacity kw Row Capacity kw Inlet Size 16 (SI) Water Pressure Airflow (L/s) Rows L/s Drop (kpa) Row Capacity kw Row Capacity kw Notes: 1. Fouling Factor = Capacity based on 12 C entering air temperature and 82 C entering water temperature. Refer to correction factors for different entering conditions on page The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD). LAT = EAT + kw x 0.83 WTD = EWT - LWT = ( L/s ) ( kw (4.19) L/s ) SD 15

16 Performance Data Hot Water Coil (SI) Inlet Size 16x24 (SI) Water Pressure Rows L/s Drop (kpa) Row Capacity kw Row Capacity kw Notes: 1. Fouling Factor = Capacity based on 12 C entering air temperature and 82 C entering water temperature. Refer to correction factors for different entering conditions on page The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD). kw x 0.83 kw LAT = EAT + WTD = EWT - LWT = ( L/s ) ( (4.19) L/s ) Airflow (L/s) Temperature Correction Factors for Water Pressure Drop (kpa) Average Water Temperature Correction Factor Temperature Correction Factors for Coil Capacity (kw) Entering Water Minus Entering Air Correction Factor Coil Only Water Weights Internal Internal Operating Inlet Coil Volume Volume Weight Size Type (cm 3 ) (M 3 ) (kg) 04 1-Row Row Row Row Row Row Row Row x16 1-Row Row Row Row Row Row Row Row Row x16 2-Row SD 16

17 Performance Data Electric Data VCEF Electric Coil kw Guidelines Minimum to Maximum Inlet Single-Phase Voltage Three-Phase Voltage Size Stages 208V/240V 277V 347V 480V 208V 480V 575V x Notes: 1. Coils available with 24-volt magnetic or mercury contactors, load carrying P.E switches, and P.E. switch with magnetic or mercury contactors. 2. Available kw increments are by 0.5 kw from 0.5 to 8.0 kw, by 1.0 kw from 9.0 to 18.0 kw, and by 2.0 kw from 18.0 to 46.0 kw. 3. Each stage will be equal in kw output. 4. All heaters contain an auto-thermal cutout and a manual-reset cutout. 5. The current amp draw for the heater elements is calculated by the formula below. 6. The maximum allowable kw is based on the largest kw possible per a voltage and the minimum airflow per an inlet size and kw. Minimum Circuit Ampacity (MCA) Equation MCA = heater amps x 1.25 Maximum Overcurrent Protection (MOP) Equation MOP = heater amps However since MOP MCA, then choose next fuse greater than MCA. Units without electric reheat would use smallest fuse sizing. Standard Fuse Sizes: 15, 20, 25, 30, 35, 40, 45, 50, and 60. Example For MOP of Single-Duct Unit A model VCEF, electric reheat unit size 14 has 480/3 phase 15 kw electric reheat with 2 stages. 15 kw 480/3 heater 15 x 1000 = x 1.73 MCA = x 1.25 = amps. Since MOP MCA, then MOP = 25. Example For total current draw of unit A model VCEF, electric reheat unit size 14 has 480/3 phase 15 kw electric reheat with 2 stages. Electric Actuator = 0.17 DDC UCM Control Board = kw 480/3 heater 15 x 1000 = x 1.73 Two heat outputs (2 amps max each = amps max Useful formulas: Cfm x ATD kw = 3145 kw = 1214 x L/s x ATD kw x famps = Primary Voltage x Ö 3 1famps = kw x 1000 Primary Voltage ATD = kw x 3145 Cfm ATD = kw 1214 x L/s SD 17

18 Performance Data Electric Data Minimum and Maximum Airflow per Inlet Size and kw I-P SI I-P SI Inlet Min Max Min Max Inlet Min Max Min Max Size kw Cfm Cfm L/s L/s Size kw Cfm Cfm L/s L/s x Note: Minimum and maximum airflow is based on UL listing and certification. SD 18

19 Performance Data Acoustics Discharge Sound Power (db) Discharge Sound Power (db) 0.5" Inlet 1.0" Inlet 2.0" Inlet 3.0" Inlet Inlet Pressure (127 Pa) Pressure (254 Pa) Pressure (508 Pa) Pressure (762 Pa) Size Cfm L/s x Notes: 1. All data are measured in accordance with current Industry Standard ARI 880, version All sound power levels, db re: watts. SD 19

20 Performance Data Acoustics Radiated Sound Power (db) Radiated Sound Power (db) 0.5" Inlet 1.0" Inlet 2.0" Inlet 3.0" Inlet Inlet Pressure (127 Pa) Pressure (254 Pa) Pressure (508 Pa) Pressure (762 Pa) Size Cfm L/s x Notes: 1. All data are measured in accordance with current Industry Standard ARI 880, version All sound power levels, db re: watts. SD 20