Fan-Powered Series. Table of Contents. Model Number Description FPS 2 3. Service Model Number Description FPS 4. Selection Procedure FPS 5 7

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1 Table of Contents Model Number Description FPS 2 3 Service Model Number Description FPS 4 Selection Procedure FPS 5 7 General Data Valve/Controller Airflow Guidelines FPS 8 Performance Data Pressure Requirements FPS 9 10 Performance Data Fan Curves FPS Performance Data Hot Water Coil FPS Performance Data Electrical Data FPS 21 Performance Data Acoustics FPS ECM Data Fan Curves FPS 28 ECM Data Pressure Requirements FPS 29 ECM Data Electrical Data FPS 30 ECM Data Acoustics FPS Dimensional Data FPS Mechanical Specifications FPS VAV-PRC008-EN FPS 1

2 Model Number Description Fan-Powered VAV Terminal Units The features of the series fan-powered VAV terminal units are described by the product categories shown in bold. Within each category the options available are listed. VSCF VSWF VSEF MODL Unit Model VSCF cooling-only fan-powered VSWF fan-powered with hot water reheat VSEF fan-powered with electric heat DSEQ Design Sequence * Design sequence INLT Primary Inlet 05 5" inlet size 06 6" inlet size 08 8" inlet size 10 10" inlet size 12 12" inlet size 14 14" inlet size 16 16" inlet size FAN Fan Size nominal cfm nominal cfm nominal cfm nominal cfm nominal cfm nominal cfm nominal cfm INSL Unit Insulation MT.5 1/2" matte-faced MT1 1" matte-faced FF.5 1/2" foil-faced FF1 1" foil-faced DW1 Double-wall w/ 1" matte-faced FBRF 3/8" closed-cell OUTL Outlet Connection FL Flanged connection SD Slip and drive connection MTVT Motor Voltage volt fan motor volt fan motor volt fan motor volt fan motor volt fan motor MTYP Motor Type STD Single-speed motor ECM Electrically-commutated motor CONTROLS Trane-Supplied Controls DD00 Shaft w/ Trane actuator 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 EI71 basic cooling w/ remote heat DPS operates fan PN00 Pneu actuator only PN51 Pneu Actuator w/ 3011 PVR, w/ DPS PN52 Pneu Actuator w/ 3011 PVR, w/ DPM CONTROL1 Customer-Supplied Controls/No Controls PNON Shaft only pneumatic controls by others ENON Shaft only electric controls by others 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 Controls & Heat Connection Side LEFT Left side ATEN Attenuator WITH Attenuator HWCL Hot Water Coil 1ROW 1-row hot water coil 2ROW 2-row hot water coil FUSE Power Fuse WITH Power fuse VOLT Electric Heater Voltage volt, 1-phase volt, 3-phase volt, 1-phase volt, 1-phase volt, 1-phase volt, 1-phase volt, 3-phase volt, 3-phase volt, 3-phase STGE Electric Heater Stage 1 1 stage of heat 2 2 stages of heat equal 3 3 stages of heat equal FPS 2 VAV-PRC008-EN

3 Model Number Description 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 CNTR MAGN MERC PEMA PEME DISW WITH AFSW WITH Electric Heater Control 24-volt magnetic contactors 24-volt mercury contactors P.E. w/ magnetic contactors P.E. w/ mercury contactors Power Disconnect Switch Power disconnect switch Electric Heater Airflow Switch Electric heater airflow switch VAV-PRC008-EN FPS 3

4 Service Model Number Description Digit 1, 2 Unit Type VS VariTrane fan-powered series Digit 3 Reheat C Cooling Only E Electric Heat W Hot Water Heat Digit 4 Development Sequence F Sixth Digit 5, 6 Primary Air Valve 05 5" inlet (350 cfm) 06 6" (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) Digit 7, 8 Secondary Air Valve 00 N/A Digit 9 Fan A 01 fan 500 nominal cfm B 02 fan 700 nominal cfm F 06 fan 2350 nominal cfm G 07 fan 2950 nominal cfm L 0317 fan 1200 nominal cfm M 0417 fan 1550 nominal cfm N Note: 0517 fan 1900 nominal cfm See fan curves for specific airflows Digit 10, 11 Design Sequence D0 Fourth (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 control DD05 DDC pulse-width modulation DD07 DDC N.O. on/off water valve FM00 FM customer actuator & control FM01 FM Trane actuator w/ customer VMA2 actuator & control 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 EI71 PN00 PN51 PN52 FM Automated Logic U341V+ FM Automated Logic U141V+ Analog fan-powered series on/off reheat PN N.O. Trane pneumatic actuator, R.A. stat PN N.O. PVR, duct pressure switch, R.A. stat PN N.O. PVR, dual pressure switch, R.A. 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 Motor Type D PSC Motor E ECM Motor Digit 18 Motor Voltage 1 115/60/ /60/ /60/ /60/ /50/1 Digit 19 Outlet Connection 1 Flanged 2 Slip & Drive Digit 20 Attenuator 0 None W With Digit 21 Water Coil 0 None 1 1-Row 2 2-Row Digit 22 Electrical Connections L Left (airflow hitting you in the face) Digit 23 Transformer 0 N/A (provided as standard) 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 Kilowatts 000 None 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 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 Airflow Switch 0 None W With FPS 4 VAV-PRC008-EN

5 Selection Procedure This section describes the elements and process required to properly select series fan-powered VAV terminals, and includes a specific example. The selection procedure is iterative in nature, which makes computer selection desirable. Selection of fan-powered VAV terminals involves four elements: Air valve selection Heating coil selection Fan size and speed selection Acoustics Air Valve Selection Provided in the performance data section of the catalog is the Wide Open Air Pressure Drop vs. Airflow table. To select an air valve, locate the required design cooling airflow and find the smallest air valve size that has air pressure drop equal to or lower than the maximum wide-open air pressure drop requirement. Heating Coil Selection Supply Air Temperature The first step required when selecting a heating coil is to determine the heating supply air temperature to the space, calculated using the heat transfer equation. Air temperature difference is defined as the heating supply air temperature to the space minus the winter room design temperature. The zone design heat loss rate is denoted by the letter Q. Supply air temperature to the space equals the leaving air temperature (LAT) for the terminal unit. Coil Leaving Air Temperature Once the terminal unit LAT is determined, the heating requirements for the coil can be calculated. Electric and hot water coil LAT equals the LAT for the unit because, in each case, the coil is located on the unit discharge. Coil Entering Air Temperature Unit heat is mounted on the discharge of the unit. Therefore, electric and hot water coil EAT equals the temperature of blended primary air and plenum air. Capacity Requirement Once both coil EAT and LAT are determined, the heat transfer (Q) for the coil must be calculated using the heat transfer equation. For electric heat units, the Q value must be converted from Btu to kw for heater selection. The required kw should be compared to availability charts in the performance data section for the unit selected. For hot water heat units, reference the capacity charts in the performance data section for the required heat transfer Q and airflow to pick the appropriate coil. Fan Size and Motor Selection Fan Airflow Fan airflow is equal to the unit design flow in both heating and cooling modes. Fan External Static Pressure Fan external static pressure is the total resistance experienced by the fan, which may include downstream ductwork and diffusers, heating coils, and sound attenuators. As total airflow varies, so will static pressure, making calculation of external static pressure dependent on unit type. With series fan-powered terminal units, all airflow passes through the fan. External static pressure requirements are the sum of the individual component pressure requirements at the design airflow of the unit. Fan Motor Type The fan motor type that will be used for the unit will need to be known before selection can begin. The ECM motor offers a wider range of airflows than the standard single-speed motor and will use different fan curves. Refer to the Features and Benefits section to determine which motor is more appropriate for the unit Selection Once fan airflow and external static pressure is determined, reference the fan curves in the performance data section. Cross plot both airflow and external static pressure on each applicable graph. If selecting with an ECM motor, make sure you use the ECM fan curves. If the point is in between the high and low limits of the graph, that fan will work. It is common to identify more than one fan that can meet the design requirements. Typically selection begins with the smallest fan available to meet capacity. If this selection does not meet acoustical requirements, upsizing the fan and operating it at a slower speed can be done for quieter operation. Acoustics Air Valve Generated Noise To determine the noise generated by the air valve, two pieces of information are required; design airflow and design air pressure drop. The design air pressure drop is determined by taking the difference between design inlet and static pressure (the valve s most over-pressurized condition) and external static pressure at design cooling flow. This represents a worstcase operating condition for the valve. Fan Generated Noise To determine fan noise levels, fan airflow, external static pressure and speed information is required. Evaluation Elements Air valve and fan are evaluated together because they have simultaneous operation. VAV-PRC008-EN FPS 5

6 Selection Procedure Access the appropriate acoustics table(s) of the catalog and determine the sound power and NC prediction for both the discharge and radiated paths. It is important to understand that discharge air noise is generally not a concern with fan-powered terminals. Radiated noise from the unit casing typically dictates the noise level of the space. If the entire unit or any element of it is generating noise in excess of the Noise Criteria requirements, the size of the appropriate portion of the terminal should be increased. Because the selection procedure is iterative, care should be taken by the designer to confirm that the change in selection does not affect other elements of the unit or system design. Selection Example With Hot Water Heat and ECM Air Valve Selection Required Information: Design cooling airflow 1000 cfm Maximum wide-open air pressure drop 0.25 in. wg The 0417 fan will be used in this instance. By interpolating, you can choose a size 12 air valve with wideopen air pressure drop of 0.22 in. wg. Heating Coil Selection Required Information: Zone design heat loss Btu Design heating airflow 1000 cfm Winter room design temp. 68ºF Coil entering water temp. 180ºF Minimum primary airflow 250 cfm Plenum temperature 75ºF Primary air temperature 55ºF Coil flow rate: 3 gpm Heat Transfer Equation (Btu) Q = x Cfm x D Temperature For the heating zone, the temperature difference is the zone supply air temperature (SAT) minus the winter room design temperature Btu = x 1000 x (SAT-68 F) SAT = 100ºF Because the hot water coil is on the unit discharge of a series fan-powered unit, the unit supply air temperature is equal to the coil LAT. Coil entering air temperature (EAT) is a mix of plenum air and the minimum primary airflow cfm x Coil EAT = 250 cfm x 55ºF + (1000 cfm cfm) x 75ºF Coil EAT = 70ºF For the heating coil, the temperature difference is the calculated coil LAT minus the coil EAT (Plenum Air Temperature). Coil Q = x 1000 x (100-70) = Btu On a series unit the hot water coil is located on the discharge, so the total heating airflow, 1000 cfm, passes through the coil. Coil Performance Table Selection: Performance: Size 0417 fan, 1-row coil at 3 gpm = MBh 1-row Coil at 3 gpm= 1.78 ft WPD Fan Selection Required Information: Fan airflow: 1000 cfm Downstream static pressure at design airflow: 0.25 in. wg A size 0417 fan with cfm can operate at up to 1600 cfm with a 1-row coil or 1540 with a 2-row coil and 0.25" downstream static pressure. Inlet and coil selections would need to be verified. If an attenuator is required, use the attenuator air pressure drop tables to define additional fan static pressure. Fan-Powered Unit with Hot Water Coil Acoustics Required Information: Design inlet static press: 1.0 in. wg NC criteria: NC-35 The selection is a VSWE Fan- Powered Terminal Unit, primary air valve size 12, series fan size 0417, with a 1-row hot water coil. Determine the casing radiated noise level because it typically dictates the sound level (NC) of the space. With a series unit, the air valve and fan operate simultaneously, so the chart for air valve and fan sound data must be consulted. The acoustics value of a size 12 inlet with a size 0417 fan has the following tabulated results: Octave NC Band Sound Power The predicted NC level for design conditions is NC-35. Note: Make sure the water coil acoustical impact is considered. For this example, the appurtenance effect adds one (1) NC to fan-only radiated sound. Because this does not set NC for this selection, it can be overlooked. The addition of an attenuator (see same appurtenance effect tables reduces the NC five (5) points, resulting in a final selection NC = 30 (if required). Caution: Do not overlook the water coil impact on acoustics. A good rule of thumb is that it will add 1 to 2 NC to "fan only" radiated sound for most applications. FPS 6 VAV-PRC008-EN

7 Selection Procedure 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 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. NOTE: Use the same procedures for selecting Low-Height Fan-Powered Units as used for selecting Fan-Powered Units VAV-PRC008-EN FPS 7

8 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 , , , , , , Pneumatic with , Volume Regulator , , , , , , , Analog Electronic , , , , 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 , , , , , , Pneumatic with , Volume Regulator , , , , , , , Analog Electronic , , , , Note: Maximum airflow must be greater than or equal to minimum airflow. FPS 8 VAV-PRC008-EN

9 Performance Data Pressure Requirements (I-P) Air Pressure Drop in. wg (I-P) Inlet/Fan Airflow Inlet/Fan Airflow Size Cfm Unit Size Cfm Unit Note: Unit pressure drops do not include hot water coil or attenuator pressure drops. Coil Air Pressure Drop in. wg (I-P) Fan Airflow 1-Row HW 2-Row HW Electric Size Cfm Coil Only Coil Only Coil Only Note: HW Coil Only pressure drops do not include unit pressure drop. PSC Attenuator Pressure Drop (I-P) Fan Plenum Size Cfm Attenuator Note: Plenum cfm = (Fan cfm) (Min. valve cfm) VAV-PRC008-EN FPS 9

10 Performance Data Pressure Requirements (SI) Air Pressure Drop Pa (SI) Inlet/Fan Airflow Size L/s Unit FPS 10 Inlet/Fan Airflow Size L/s Unit Note: Unit pressure drops do not include hot water coil or attenuator pressure drops. Coil Air Pressure Drop Pa (SI) Fan Airflow 1-Row HW 2-Row HW Electric Size L/s Coil Only Coil Only Coil Only Note: HW Coil Only pressure drops do not include unit pressure drop. PSC Attenuator Pressure Drop (SI) Fan Plenum Attenuator Size L/s Note: Plenum cfm = (Fan cfm) (Min. valve cfm) VAV-PRC008-EN

11 Performance Data Fan Curves (60 Hz) Note: When attenuator is required, add inlet attenuator pressure to discharge static pressure for final fan performance. Pa In. wg Fan Size 01 Discharge Static Pressure Cfm L/s Airflow Pa In. wg Fan Size VSCF and VSEF maximum Minimum 1 row coil maximum 2 row coil maximum Discharge Static Pressure Airflow Cfm L/s Pa In. wg 0.80 Fan Size Discharge Static Pressure Cfm L/s Airflow VAV-PRC008-EN FPS 11

12 Performance Data Fan Curves (60 Hz) Pa In. wg Fan Size 0417 Note: When attenuator is required, add inlet attenuator pressure to discharge static pressure for final fan performance. Discharge Static Pressure Cfm L/s Airflow Pa In. wg 0.80 Fan Size Discharge Static Pressure VSCF and VSEF maximum Minimum 1 row coil maximum 2 row coil maximum Cfm L/s Airflow Pa In. wg Fan Size Discharge Static Pressure Cfm L/s FPS 12 Airflow VAV-PRC008-EN

13 Performance Data Fan Curves (60 Hz) Note: When attenuator is required, add inlet attenuator pressure to discharge static pressure for final fan performance. Discharge Static Pressure Pa In. wg Fan Size Cfm L/s Airflow VSCF and VSEF maximum Minimum 1 row coil maximum 2 row coil maximum VAV-PRC008-EN FPS 13

14 Performance Data Fan Curves (50 Hz) Pa In. wg Fan Size /50 Note: When attenuator is required, add inlet attenuator pressure to discharge static pressure for final fan performance. Discharge Static Pressure Airflow Cfm L/s 50 hz Discharge Static Pressure Pa In. wg Fan Size /50 VSCF and VSEF maximum Minimum 1 row coil maximum 2 row coil maximum Cfm L/s Airflow Pa In. wg 0.80 Fan Size / Discharge Static Pressure FPS Cfm L/s Airflow VAV-PRC008-EN

15 Performance Data Fan Curves (50 Hz) Note: When attenuator is required, add inlet attenuator pressure to discharge static pressure for final fan performance. Pa In. wg Fan Size /50 Discharge Static Pressure Cfm L/s Airflow VSCF and VSEF maximum Minimum 1 row coil maximum 2 row coil maximum Discharge Static Pressure Pa In. wg Fan Size /50 50 hz Airflow Cfm L/s Pa In. wg 0.70 Parallel Fan Size / Discharge Static Pressure Cfm L/s Airflow VAV-PRC008-EN FPS 15

16 Performance Data Fan Curves (50 Hz) Pa In. wg Parallel Fan Size /50 Note: When attenuator is required, add inlet attenuator pressure to discharge static pressure for final fan performance. Discharge Static Pressure Cfm L/s Airflow 50 hz VSCF and VSEF maximum Minimum 1 row coil maximum 2 row coil maximum FPS 16 VAV-PRC008-EN

17 Performance Data Hot Water Coil (I-P) Fan Sizes 01, 02 (I-P) Water Pressure Airflow (Cfm) Rows Gpm Drop (ft) Row Capacity MBH Row Capacity MBH Fan Sizes 0317, 0417 (I-P) Water Pressure Airflow (Cfm) Rows Gpm Drop (ft) Row Capacity MBH Row Capacity MBH Fan Size 0517 (I-P) Water Pressure Airflow (Cfm) Rows Gpm Drop (ft) Row Capacity MBH Row Capacity MBH Notes: 1. Fouling Factor = 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 55 F entering air temperature and 180 F entering water temperature. Refer to correction factors for different entering conditions. LAT = EAT + MBH x ( Cfm ) WTD = EWT - LWT = 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 VAV-PRC008-EN FPS 17 ( )

18 Performance Data Hot Water Coil (I-P) Fan Sizes 06, 07 (I-P) Water Pressure Airflow (Cfm) Rows Gpm Drop (ft) Row Capacity MBH Row Capacity MBH Notes: 1. Fouling Factor = 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 55 F entering air temperature and 180 F entering water temperature. Refer to correction factors for different entering conditions. LAT = EAT + MBH x ( Cfm ) WTD = EWT - LWT = 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 Coils - Water Weights Internal Internal Operating Unit Fan Coil Volume Volume Weight Type Size Type (in 3 ) (gal) (lbs) VSWF 01, 02 1-Row VSWF 2-Row VSWF 0317, Row VSWF 2-Row VSWF Row VSWF 2-Row VSWF 06, 07 1-Row VSWF 2-Row ( ) FPS 18 VAV-PRC008-EN

19 Performance Data Hot Water Coil (SI) Fan Sizes 01, 02 (SI) Water Pressure Airflow (L/s) Rows L/s Drop (kpa) Row Capacity kw Row Capacity kw Fan Sizes 0317, 0417 (SI) Water Pressure Airflow (L/s) Rows L/s Drop (kpa) Row Capacity kw Row Capacity kw Fan Size 0517 (SI) Water Pressure Airflow (L/s) Rows L/s Drop (kpa) Row Capacity kw Row Capacity kw Notes: 1. Fouling Factor = The off-coil temperature of the hot water coil on parallel fan-powered units must not exceed 60 C. 3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD). 4. Capacity based on 21 C entering air temperature and 82 C entering water temperature. Refer to correction factors for different entering conditions. kw x 0.83 kw 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 VAV-PRC008-EN FPS 19 LAT = EAT +( ) WTD = EWT - LWT =((4.19)L/s)

20 Performance Data Hot Water Coil (SI) Fan Sizes 06, 07 (SI) Water LAT = EAT kw x 0.83 kw WTD = EWT - LWT +( ) =((4.19)L/s) L/s Pressure Airflow (L/s) Rows L/s Drop (kpa) Row Capacity kw Row Capacity kw Notes: 1. Fouling Factor = The off-coil temperature of the hot water coil on parallel fan-powered units must not exceed 60 C. 3. The following equations may be used in calculating Leaving Air Temperature (LAT) and Water Temperature Difference (WTD). 4. Capacity based on 21 C entering air temperature and 82 C entering water temperature. Refer to correction factors for different entering conditions. 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 Coils - Water Weights Water Internal Internal Operating Unit Fan Coil Volume Volume Weight Type Size Type (m 3 ) (L) (kg) VSWF 01, 02 1-Row VSWF 2-Row VSWF 0317, Row VSWF 2-Row VSWF Row VSWF 2-Row VSWF 06, 07 1-Row VSWF 2-Row FPS 20 VAV-PRC008-EN

21 Performance Data Electrical Data VSEF Electric Coil kw Guidelines - Minimum to Maximum (PSC Motor Units) Fan Single-Phase Voltage Three-Phase Voltage Size Stages 208V 240V* 277V 347V 480V 208V 480V 575V 380V/50 Hz *** / /5.5 3*** *** *** *** ** *** ** *** * Use also for 230V 50 Hz applications. ** Not available with 240/1 *** Three stages of electric heat available only with pneumatic controls. Notes: 1. Coils available with electric, 24-VAC magnetic or contactors, or load carrying P.E. switches with magnetic or mercury contactors. 2. Available kw increments are by 0.5 from 0.5 kw to 8.0 kw, by 1.0 kw from 9.0 to 17.0 kw, and by 2.0 kw from 18.0 to 24.0 kw. 3. Each stage is equal in kw output. 4. All heaters contain an auto reset thermal cutout and a manual reset cutout. 5. The current amp draw for the heater elements is calculated by the formula below. 6. Recommended coil temperature rise = 20 to 30 F (-7 to -1 C). Maximum temperature rise = 55 F (12 C). 7. Heaters should not operate at cfms below the namplate minimum. 8. Only two stages of electric reheat available with Trane controls. Fan Electrical Performance (PSC Motor) Maximum Fan Motor Amperage (FLA) 60 Hz 50 Hz Fan Size HP 115 VAC 208 VAC 277 VAC 347 VAC 230 VAC 01 1/ / / / / / Notes: 1. Electric Heat Units Units with fan sizes 01 to 0517 and a primary voltage of 208/60/1, 208/60/3 or 0/60/1 use 115/60/1 VAC fan motors. Fan sizes 06 and 07 in these same voltages, have 208/60/1 VAC fan motors. 2. Electric Heat Units Units with primary voltage of 277/60/1, 480/60/1 or 480/60/3 use 277 VAC fan motors. 3. Electric Heat Units Units with primary voltage of 347/60/1 or 575/60/3 use 347 VAC fan motors. 4. With 380/50/3 and 230/50/1 use 230/50 motors. Minimum Circuit Ampacity (MCA) Equation MCA = 1.25 x (Smotor amps + heater amps) Here motor amps is the sum of all motor current draws if more than one is used in the unit. Maximum Overcurrent Protection (MOP) Equation MOP = (2.25 x motor 1amps) + motor2 amps + heater amps motor1 amps = current draw of largest motor motor2 amps = sum of current draw of all other motors used in units General Sizing Rules: If MOP = 15, then fuse size = 15 If MOP = 19, then fuse size = 15 with one exception. If heater amps x 1.25 > 15, then fuse size = 20. If MOP MCA, then choose next fuse size greater than MCA. Control fusing not applicable. Standard Fuse Sizes: 15, 20, 25, 30, 35, 40, 45, 50, and 60. Example: A model VSEF, electric reheat unit size has 480/3 phase, 12 kw electric reheat with 2 stages and 277-Volt motor. For MOP of fan-powered unit: 12 kw - 480/3 heater 12 x 1000 = amps 480 x 1.73 MCA = ( ) x 1.25 = 21.06, MOP = (2.25 x 2.4) = Since MOP MCA, then MOP = 25. For total current draw of unit: Electric Actuator = 0.17 amps DDC UCM Control Board = kw 480/3 heater 12 x 1000 = x 1.73 Two heat outputs (2 amps max each = 1.00 Motor amps: 277 V (Fan size 0517) = amps max Useful formulas: Cfm x ATD kw = 3145 kw x famps = Primary Voltage x Ö 3 ATD = kw x 3145 Cfm kw = 1214 x L/s x ATD 1famps = ATD = kw 1214 x L/s kw x 1000 Primary Voltage VAV-PRC008-EN FPS 21

22 Performance Data Acoustics Discharge Sound Power (db) Fan and 100% Primary Discharge Sound Power (db) 0.5" Inlet 1.0" Inlet 2.0" Inlet 3.0" Inlet Fan Inlet Pressure (127 Pa) Pressure (254 Pa) Pressure (508 Pa) Pressure (762 Pa) Size Size Cfm L/s Notes: 1. All data are measured in accordance with current Industry Standard ARI 880, version All sound power levels, db re: watts. FPS 22 VAV-PRC008-EN