Product Catalog VariTrane™ Products Single Duct/Dual Duct Units VDD, VCC, VCW, VCE Variable-Air-Volume (VAV) System RA EA OA supply fan PA VAV box cooling coil variablespeed drive thermostat SA March 2015 VAV-PRC011M-EN
Introduction VariTrane™ variable-air-volume (VAV) units lead the industry in quality and reliability and are designed to meet the specific needs of today’s applications. This generation of VariTrane units builds upon the history of quality and reliability and expands the products into the most complete VAV offering in the industry. Single-duct units provide an economical energy-savings system solution. This is the most common type of VAV unit. Dual-duct units have two air valves.
Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Indoor Air Quality (IAQ) Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents CO2 Wall Sensor and Duct CO2 Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 DDC Zone Sensor with LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 Zone Occupancy Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 Factory or Field Mounted Auxiliary Temperature Sensor . . . . . . . . . . . . . 108 Factory Mounted Discharge Air Temperature Sensing Matrix . . . . . . . . .
Table of Contents Duct Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 Best Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 Unit Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 Additional VAV System and Product References . . . . . . . . . . . . . . . . . . . .
Features and Benefits Construction UL-listed products Safety and reliability are vital in commercial construction. All VariTrane™ units are listed in accordance with UL -1995 as terminal units. This listing includes the VAV terminal with electric heaters. Additionally, all insulation materials pass UL 25/50 smoke and flame safety standards. AHRI Certified Performance All VariTrane units are AHRI certified.
Features and Benefits External Shaft—This simple design provides controller flexibility and is designed to facilitate actuator field replacement. Position Indicator—The position indicator shows current air valve position to aid in system commissioning. Many times this can be seen from the floor without climbing a ladder. External Actuator—This feature increases serviceability, control system compatibility, and actuator clutch access for simplified commissioning.
Features and Benefits construction or renovation. Through extensive usability testing internally and with building operators, we’ve designed our controls for real world ease of use. (Additional control options and sequence-of-operations are located in the “Controls” section.) Tracer BACnet Controllers Trane now offers a full line of programmable BACnet® controllers designed for simple integration into any system which can communicate via the BACnet protocol.
Features and Benefits • Pressure-independent (PI) operation—Provides airflow required by the room thermostat to maintain occupant comfort. The controller automatically adjusts valve position to maintain required airflow. Minimum and maximum airflow is factory-set and field-adjustable.
Features and Benefits Pneumatic Controller Pneumatic—Pneumatic controllers provide proven reliability and performance. A full line of options provide: • Highest quality PVR available, which maximizes space temperature control. Pressure-independent operation • All VariTrane™ pneumatic controllers use the patented flow sensor input to provide the most accurate performance available.
Features and Benefits Table 1. Factory-installed vs.
Agency Certifications There are numerous regulations and standards in the industry that determine the construction and performance parameters for VAV terminal units. Some of the more important of those standards and regulations are listed below, along with a brief description of what each one addresses. American Society of Heating, Refrigerating and Air-conditioning Engineers (ASHRAE) ASHRAE - 41.1 ASHRAE - 41.2 ASHRAE - 41.3 These standards specify methods for temperature measurement (41.
Agency Certifications Underwriter’s Laboratory (UL) 1995 Underwriter’s Laboratory is an independent testing agency that examines products and determines if those products meet safety requirements. Equipment manufacturers strive to meet UL guidelines and obtain listing and classifications for their products because customers recognize UL approval as a measure of a safely designed product. VariTrane™ VAV air terminals are listed per UL-1995, Heating and Cooling Equipment.
Model Number Descriptions Digit 1, 2 — Unit Type VC = VariTrane™ Single Duct Digit 3—Reheat C = E = W = Cooling Only Electric Heat Hot Water Heat Digit 4—Development Sequence F = Sixth Digit 5, 6—Primary Air Valve 04 05 06 08 10 12 14 16 24 = = = = = = = = = 4" inlet (225 cfm) 5" inlet (350 cfm) 6" inlet (500 cfm) 8" inlet (900 cfm) 10" inlet (1400 cfm) 12" inlet (2000 cfm) 14" inlet (3000 cfm) 16" inlet (4000 cfm) 24" x 16" inlet (8000 cfm) Digit 7, 8, 9—Not Used 000 = N/A Digit 10, 11—Design S
Model Number Descriptions DD92= UC210 DDC-Basic plus- Local (Electric heat- Staged) Remote (Staged EH) DD93= UC210 Ventilation Flow (Water heat- N.O. 2-position) DD95= UC210 Basic (Electric HeatModulating SCR) DD96= UC210 Basic plus-Local (Electric heat-Modulating SCR) Remote (Staged EH) DD97= UC210 Ventilation Flow (Electric heat-Modulating SCR) ENCL= Shaft Only in Enclosure ENON= Shaft Out Side for Electric Units FM00= Other Actuator and Control FM01= Trane Supplied Actuator, Other Ctrl PC00= N.C.
Model Number Descriptions Digit 38—Piping Package 0 A B = = = None 2-way Automatic Balancing 3-way Automatic Balancing Digit 39—Water Valve 0 1 2 3 4 = = = = = None Proportional, HW Valve, 0.7 Cv Proportional, HW Valve, 2.7 Cv Proportional, HW Valve, 6.6 Cv Proportional, HW Valve, 8.0Cv Digit 40—Flow Rate 0 A B C D E F G H J K L M N P Q R S T U V W X Y Z 1 2 3 4 5 6 7 16 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = None 0.5 gpm (0.03 l/s) 1.0 gpm (0.06 l/s) 1.5 gpm (0.09 l/s) 2.
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. 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.
Single-Duct VAV Terminal Units 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 / 3.414 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.
Single-Duct VAV Terminal Units The maximum NC level is NC-29. 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.
Single-Duct VAV Terminal Units Table 3. Primary airflow control factory settings - SI Control Type Direct Digital Control/ UCM Pneumatic with Volume Regulator Note: 20 Air Valve Size (in.
Single-Duct VAV Terminal Units Performance Data Table 4. Air pressure drop - in. wg (I-P) Inlet Size Airflow Cfm Cooling Only Hot Water 1-row coil Hot Water 2-row coil Hot Water 3-row coil Hot Water 4-row coil Electric Heat 04 50 100 150 225 0.01 0.01 0.01 0.01 0.01 0.02 0.03 0.06 0.01 0.02 0.03 0.06 0.01 0.03 0.08 0.16 0.01 0.04 0.10 0.22 0.01 0.01 0.01 0.02 05 100 200 300 350 0.01 0.01 0.01 0.02 0.01 0.05 0.09 0.12 0.03 0.08 0.17 0.22 0.03 0.13 0.27 0.35 0.04 0.18 0.36 0.47 0.
Single-Duct VAV Terminal Units Table 5. Air pressure drop - Pa (SI) Inlet Size Airflow (L/s) Cooling Only Hot Water 1-row coil Hot Water 2-row coil Hot Water 3-row coil Hot Water 4-row coil Electric Heat 04 25 50 70 105 3 3 3 3 3 4 7 15 3 4 7 15 2.5 7.5 20 40 2.5 10 25 55 3 3 3 3 05 45 95 140 165 3 3 3 4 3 12 22 29 6 21 41 54 7.5 32 67 87 10 45 90 117 3 3 5 6 06 45 120 165 235 3 13 26 55 4 29 55 112 7 43 79 155 7.
Single-Duct VAV Terminal Units Table 6. Inlet Size Integral outlet plenum air pressure drop - in. wg (I-P) Outlet Outlet (in.) Configuration Diameter Airflow (Cfm) 50 100 150 200 250 350 400 500 600 800 900 1100 1200 1400 1600 2000 4,5,6 4,5,6 A,C 5 6 8,10 10 12 AC 8 10 10 4,5,6 4,5,6 8 B 5 6 8 10 10 12 B 8 10 10 4,5,6 4,5,6 D,E 5 6 8 8 8 D, E 5 6 8 0.06 0.09 0.18 0.23 0.35 0.49 0.85 1.06 0.02 0.03 0.05 0.07 0.11 0.15 0.26 0.32 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.
Single-Duct VAV Terminal Units Table 7.
Single-Duct VAV Terminal Units Table 8. Rows 1-Row Capacity MBH 2-Row Capacity MBH 3-Row Capacity MBH 4-Row Capacity MBH Heating capacity (MBh) - inlet size 04, 05, 06 (I-P) gpm Water Pressure Drop (ft) Airflow (cfm) 50 100 150 200 0.5 0.48 4.33 5.97 7.09 7.97 8.73 1.0 1.61 4.64 6.61 8.02 9.19 10.21 1.5 3.27 4.75 6.85 8.39 9.68 10.83 2.0 5.44 4.81 6.98 8.59 9.95 11.17 2.5 8.07 4.85 7.06 8.71 10.12 11.39 12.55 13.63 14.65 15.61 16.51 1.0 0.57 5.54 9.
Single-Duct VAV Terminal Units Table 9. Rows 3-Row Capacity MBH 4-Row Capacity MBH Heating capacity (MBh) - inlet size 08 (I-P) (continued) gpm Water Pressure Drop (ft) Airflow (cfm) 105 200 300 400 500 600 700 800 900 2.5 0.53 11.95 19.51 25.34 29.76 33.26 36.09 38.44 40.43 42.15 4.0 1.24 12.18 20.28 26.82 31.97 36.16 39.65 42.61 45.15 47.38 6.0 2.62 12.31 20.74 27.71 33.32 37.98 41.91 45.29 48.23 50.83 8.0 4.45 12.37 20.97 28.17 34.04 38.95 43.
Single-Duct VAV Terminal Units Table 11. Heating capacity (MBh) - inlet size 12 (I-P) Rows 1-Row Capacity MBH 2-Row Capacity MBH 3-Row Capacity MBH 4-Row Capacity MBH gpm Water Pressure Drop (ft) Airflow (cfm) 300 500 700 900 1100 1300 1500 1700 1900 2000 1.0 0.62 17.04 20.87 23.79 26.07 27.94 29.51 30.85 32.03 33.06 33.52 2.0 2.17 19.32 24.45 28.47 31.86 34.91 37.59 39.99 42.15 44.11 45.02 3.0 4.53 20.21 25.94 30.55 34.52 38.04 41.21 44.15 46.87 49.
Single-Duct VAV Terminal Units Table 12. Heating capacity (MBh) - inlet size 14 (I-P) Rows 1-Row Capacity MBH 2-Row Capacity MBH 3-Row Capacity MBH 4-Row Capacity MBH gpm Water Pressure Drop (ft) Airflow (cfm) 600 1000 1400 1800 2200 2600 3000 3400 3800 4000 2.0 1.13 25.34 32.22 37.40 41.72 45.32 48.41 51.10 53.46 55.57 56.85 3.0 2.35 26.92 34.91 41.07 46.22 50.79 54.84 58.45 61.69 64.63 66.45 4.0 3.96 27.78 36.42 43.21 48.99 54.07 58.64 62.86 66.70 70.
Single-Duct VAV Terminal Units Table 13. Heating capacity (MBh) - inlet size 16 (I-P) Rows 1-Row Capacity MBH 2-Row Capacity MBH 3-Row Capacity MBH 4-Row Capacity MBH gpm Water Pressure Drop (ft) Airflow (cfm) 600 1000 1400 1800 2200 2600 3000 3400 3800 4000 2.0 1.25 32.86 40.56 46.53 51.24 55.14 58.43 61.26 63.73 65.91 66.90 3.0 2.59 35.44 44.58 51.72 57.88 63.13 67.69 71.71 75.30 78.52 80.01 4.0 4.37 36.88 46.94 54.96 61.77 67.89 73.31 78.17 82.55 86.
Single-Duct VAV Terminal Units Table 14. Heating capacity (MBh) - inlet size 16x24 (I-P) Rows 1-Row Capacity MBH 2-Row Capacity MBH 3-Row Capacity MBH 4-Row Capacity MBH Water Pressure gpm Drop (ft) Airflow (cfm) 800 1200 1800 2400 3000 3600 4200 4800 5400 6000 6600 7200 8000 80.54 82.07 83.86 2.0 1.38 39.61 46.73 54.59 60.43 65.04 68.79 71.91 74.56 76.83 78.80 3.0 2.84 43.29 51.67 61.73 69.73 76.28 81.81 86.54 90.65 94.26 97.47 4.0 4.78 45.36 54.73 65.
Single-Duct VAV Terminal Units Table 15. Temperature correction factors for water pressure drop (ft) Average Water Temperature Correction Factor 200 0.970 190 0.985 180 1.000 170 1.020 160 1.030 150 1.050 140 1.080 130 1.100 120 1.130 110 1.150 Table 16. Temperature correction factors for coil capacity (MBH) Entering Water Minus Entering Air Correction Factor 40 0.32 50 0.40 60 0.48 70 0.56 80 0.64 100 0.80 125 1.00 140 1.12 150 1.20 160 1.28 180 1.44 200 1.60 Table 17.
Single-Duct VAV Terminal Units Table 18. Heating capacity (kW) - inlet size 04, 05, 06 (SI) Rows L/s Water Pressure Drop (kPa) 0.03 1.44 1.27 1.75 2.08 2.34 2.56 2.75 2.92 3.08 3.21 3.34 1-Row Capacity MBH 0.06 4.80 1.36 1.94 2.35 2.69 2.99 3.26 3.50 3.73 3.94 4.13 0.09 9.78 1.39 2.01 2.46 2.84 3.17 3.48 3.76 4.02 4.27 4.49 0.13 16.25 1.41 2.05 2.52 2.92 3.27 3.60 3.90 4.19 4.45 4.70 0.16 24.13 1.42 2.07 2.55 2.97 3.34 3.68 4.00 4.29 4.57 4.
Single-Duct VAV Terminal Units Table 19. Heating capacity (kW) - inlet size 08 (SI) (continued) Rows 3-Row Capacity kW 4-Row Capacity kW L/s Water Pressure Drop (kPa) Airflow (L/s) 50 94 142 189 236 283 330 378 425 0.16 1.57 3.50 19.51 25.34 29.76 33.26 36.09 38.44 40.43 42.15 0.25 3.71 3.57 20.28 26.82 31.97 36.16 39.65 42.61 45.15 47.38 0.38 7.82 3.61 20.74 27.71 33.32 37.98 41.91 45.29 48.23 50.83 0.50 13.31 3.63 20.97 28.17 34.04 38.95 43.13 46.
Single-Duct VAV Terminal Units Table 21. Heating capacity (kW) - inlet size 12 (SI) Rows 1-Row Capacity kW 2-Row Capacity kW 3-Row Capacity kW 4-Row Capacity kW L/s Water Pressure Drop (kPa) Airflow (L/s) 142 236 330 425 519 613 708 802 897 0.06 1.86 4.99 6.12 6.97 7.64 8.19 8.65 9.04 9.39 9.69 9.82 0.13 6.48 5.66 7.17 8.34 9.34 10.23 11.02 11.72 12.35 12.93 13.20 0.19 13.55 5.92 7.60 8.95 10.12 11.15 12.08 12.94 13.74 14.47 14.82 0.25 22.94 6.06 7.
Single-Duct VAV Terminal Units Table 22. Heating capacity (kW) - inlet size 14 (SI) Rows 1-Row Capacity kW 2-Row Capacity kW 3-Row Capacity kW 4-Row Capacity kW L/s Water Pressure Drop (kPa) Airflow (L/s) 283 472 661 849 1038 1227 1416 1604 1793 1888 0.13 3.37 7.43 9.44 10.96 12.23 13.28 14.19 14.97 15.67 16.29 16.66 0.19 7.02 7.89 10.23 12.04 13.54 14.88 16.07 17.13 18.08 18.94 19.47 0.25 11.85 8.14 10.67 12.66 14.36 15.85 17.18 18.42 19.55 20.58 21.
Single-Duct VAV Terminal Units Table 23. Heating capacity (kW) - inlet size 16 (SI) Rows 1-Row Capacity kW 2-Row Capacity kW 3-Row Capacity kW 4-Row Capacity kW L/s Water Pressure Drop (kPa) Airflow (L/s) 283 472 661 849 1038 1227 1416 1604 1793 1888 0.13 3.74 9.63 11.89 13.64 15.02 16.16 17.12 17.95 18.68 19.32 19.61 0.19 7.76 10.39 13.07 15.16 16.96 18.50 19.84 21.02 22.07 23.01 23.45 0.25 13.06 10.81 13.76 16.11 18.10 19.90 21.49 22.91 24.19 25.36 25.
Single-Duct VAV Terminal Units Table 24. Heating capacity (kW) - inlet size 16x24 (SI) Rows 1-Row Capacity kW 2-Row Capacity kW 3-Row Capacity kW 4-Row Capacity kW L/s Water Pressure Drop (kPa) Airflow (L/s) 378 566 849 1133 1416 1699 1982 2265 2548 2831 3115 3398 3775 0.13 4.11 11.61 13.70 16.00 17.71 19.06 20.16 21.08 21.85 22.52 23.09 23.60 24.05 24.58 0.19 8.50 12.69 15.14 18.09 20.44 22.36 23.98 25.36 26.57 27.63 28.57 29.40 30.16 31.05 0.25 14.
Single-Duct VAV Terminal Units Table 25. Temperature correction factors for water pressure drop (kPa) Average Water Temperature Correction Factor 93 0.970 88 0.985 82 1.000 77 1.020 71 1.030 66 1.050 60 1.080 54 1.100 49 1.130 43 1.150 Table 26. Temperature correction factors for coil capacity (kW) Entering Water Minus Entering Air Correction Factor 22 0.32 28 0.40 33 0.48 39 0.56 44 0.64 56 0.80 69 1.00 78 1.12 83 1.20 89 1.29 100 1.45 111 1.61 Table 27.
Single-Duct VAV Terminal Units Electrical Data Table 28. VCEF electric coil kW guidelines - minimum to maximum Single-Phase Voltage Inlet Size Stages Three-Phase Voltage 575V(a) 380V/50 Hz 120V 208V/240V 277V 347V 480V 208V 480V 04 1 2 3 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 - 1.0 - 1.0 1.0 1.0 1.0 1.0 - - 1.0 1.0 - 05 1 2 3 1.0-2.5 1.0-2.5 1.0-2.5 1.0-2.5 1.0-2.5 1.0-2.5 1.0-2.5 1.0-2.5 1.0-2.5 1.0-2.5 1.0-2.5 1.5-2.5 1.0-2.5 2.0-2.5 2.5 1.0-2.5 1.0-2.5 1.0-2.5 1.0-2.5 1.
Single-Duct VAV Terminal Units Table 29. Minimum and maximum airflow per inlet size and kW I-P SI Inlet size kW Min Heat cfm Max cfm Min L/s 4 1.0 83 225 39 106 5 1.0 1.5 2.0 2.5 83 124 166 175 350 350 350 350 39 59 78 82 165 165 165 165 6 1.0 1.5 2.0 2.5 3.0 3.5 4.0 83 124 166 175 210 245 280 500 500 500 500 500 500 500 39 59 78 82 99 115 132 236 236 236 236 236 236 236 8 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.
Single-Duct VAV Terminal Units Table 29. Minimum and maximum airflow per inlet size and kW (continued) I-P SI Inlet size kW Min Heat cfm Max cfm Min L/s Max L/s 14 1.0 - 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 20.0 22.0 685 731 769 839 909 978 1048 1118 1188 1258 1398 1538 3000 3000 3000 3000 3000 3000 3000 3000 3000 3000 3000 3000 323 345 363 396 429 462 495 528 561 594 660 726 1416 1416 1416 1416 1416 1416 1416 1416 1416 1416 1416 1416 16 1.0 - 12.0 13.0 14.0 15.0 16.0 17.0 18.
Single-Duct VAV Terminal Units Table 30. Discharge air reset parameter setup (continued) I-P Inlet Size 42 kW SI Reset Nom Reset Nom Reset Max Discharge Reset Min/ Nom Reset Nom Reset Max Discharge Max Local Min Local Max Local Min Local Max Local Air Temp Reset Air Temp Reset Min/Max Heat Heat Setting Heat Setting (Setpoint & Local Heat Heat Setting Heat Setting (Setpoint & Range (cfm) (cfm) Max) ∆T Range (cfm) (cfm) Max) ∆T 8 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.
Single-Duct VAV Terminal Units Table 30. Discharge air reset parameter setup (continued) I-P Inlet Size 14 kW 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 20.0 22.
Single-Duct VAV Terminal Units Table 30. Discharge air reset parameter setup (continued) I-P Inlet Size 16 44 kW 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 20.0 22.0 24.0 26.0 28.0 30.
Single-Duct VAV Terminal Units Table 30. Discharge air reset parameter setup (continued) I-P Inlet Size 16 x 24 kW 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 20.0 22.0 24.0 26.0 28.0 30.0 32.0 34.0 36.0 38.0 40.0 42.
Single-Duct VAV Terminal Units Minimum Circuit Ampacity (MCA) Equation • MCA = heater amps x 1.25 Maximum Over Current Protection (MOP) Equation • MOP = heater amps • However since MOP is less than or equal to 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.
Single-Duct VAV Terminal Units Table 31. Discharge sound power (dB)1, 2, 4Perf Inlet Size (in) Cfm 4 5 6 8 10 12 14 16 24 x 16 0.5" Inlet Pressure 1.0" Inlet Pressure 1.5" Inlet Pressure 2.0" Inlet Pressure 3.
Single-Duct VAV Terminal Units Table 32. Radiated sound power (dB)1, 2, 4 Inlet Size (in) Cfm 4 5 6 8 10 12 14 16 24 x 16 0.5" Inlet Pressure 1.0" Inlet Pressure 1.5" Inlet Pressure 2.0" Inlet Pressure 3.
Single-Duct VAV Terminal Units Table 33. Sound noise criteria (NC) Inlet Size (in) 4 5 6 8 10 12 14 16 24 x 16 Discharge1,2,4 Radiated1,2,4 Inlet Pressure (Ps)3,5 Inlet Pressure (Ps)3,5 CFM l/s 0.5” 1.0” 2.0” 3.0” 0.5” 1.0” 2.0” 3.0” 80 38 21 25 1.5” 31 34 -- 16 27 35 120 57 25 30 34 38 -- 19 28 35 150 71 25 32 38 38 -- 20 30 36 225 106 32 38 44 45 18 23 32 38 35 1.
Single-Duct VAV Terminal Units Table 34. AHRI 885-2008 discharge transfer function assumptions Octave Band Small Box (< 300 cfm) Medium Box (300-700 cfm) Large Box (> 700 cfm) 2 3 4 5 6 7 -24 -27 -29 -28 -29 -30 -39 -40 -41 -53 -51 -51 -59 -53 -52 -40 -39 -39 Notes: Add to terminal unit sound power to determine discharge sound pressure in the space. 1. “—” represents NC levels below NC 15. 2. NC Values are calculated using current Industry Standard AHRI 885-2008.
Single-Duct VAV Terminal Units Dimensional Data SINGLE-DUCT COOLING ONLY WITH OPTIONAL OUTLET PLENUM (VCCF) L/s INLET SIZE (NOMINAL Ø) C 04 225 106 4" [104mm] 05 350 165 5" [127mm] 06 500 236 6" [152mm] 08 900 425 VALV CFM 10 1400 661 L H W Z WT LBS [KGS] E B (w) 11.50" [292mm] 9.50" [241mm] 11.50" [292mm] 2.75" [70mm] 8.00" [203mm]10.00" [250mm] 11.50" [292mm]21 [9.5] 8" [203mm] 11.00" [279mm] 11.50" [292mm] 12.50" [318mm] 2.25" [57mm] 10.00" [254mm] 11.
Single-Duct VAV Terminal Units 52 VAV-PRC011M-EN
Single-Duct VAV Terminal Units SINGLE DUCT HOT WATER W/PLENUM (VCWF) VALV CFM L/s INLET SIZE (NOMINAL Ø) C 04 225 106 4" [104mm] 05 350 165 5" [127mm] 6" [152mm] L H W Z A (h) E B (w) WT LBS [KGS] 11.50" [292mm] 9.50" [241mm] 11.50" [292mm] 2.75" [70mm] 8.00" [203mm] 10.00" [254mm]11.50" [292mm] 27 [12] 06 500 236 08 900 425 8" [203mm] 11.00" [279mm] 11.50" [292mm] 12.50" [318mm] 2.25" [57mm] 10.00" [254mm] 11.00" [279mm] 30 [14] 10 1400 661 10" [254mm] 12.
Single-Duct VAV Terminal Units 54 VAV-PRC011M-EN
Single-Duct VAV Terminal Units Use port at the bottom for inlet and top for outlet on single row coils. For multirow coils, always plumb in counter flow orientation. Water inlet always on the airflow downstream side of the hot water coil. Water outlet always on the upstream side of the hot water coil. See drawings below for reference.
Single-Duct VAV Terminal Units COIL INFORMATION FOR 2 ROW COIL ASSY INLT CFM LITERS per SECOND A B 04 225 106 7/ 8" [22mm] O.D. 6 1/ 4 " [191mm] 10" [254mm] 8 1/ 4 " [210mm] 05 350 165 7/ 8" [22mm] O.D. 6 1/ 4 " [191mm] 8 1/ 8 " [206mm] 8 1/ 8 " [206mm] 10" [254mm] 8 1/ 4 " [210mm] 06 500 236 7/ 8" [22mm] O.D. 8 1/ 8 " [206mm] 10" [254mm] 900 425 7/ 8" [22mm] O.D.
Single-Duct VAV Terminal Units COIL INFORMATION FOR 3 ROW COIL ASSY CFM LITERS per SECOND 04 225 106 7/ " 8 [22mm] O.D. 05 350 165 7/ " 8 [22mm] O.D. 06 500 236 7/ " 8 [22mm] O.D. 08 900 425 7/ " 8 [22mm] O.D. 10 1400 661 7/ " 8 [22mm] O.D. 12 2000 994 7/ " 8 [22mm] O.D. 14 3000 1416 7/ " 8 [22mm] O.D. 16 4000 1888 7/ " 8 [22mm] O.D. 8000 3776 7/ " 8 [22mm] O.D.
Single-Duct VAV Terminal Units COIL INFORMATION FOR 4 ROW COIL ASSY INLT CFM LITERS per SECOND 04 225 106 7/ " 8 [22mm] O.D. 05 350 165 7/ " 8 [22mm] O.D. 06 500 236 7/ " 8 [22mm] O.D. 08 900 425 7/ " 8 [22mm] O.D. 10 1400 661 7/ " 8 [22mm] O.D. 12 2000 994 7/ " 8 [22mm] O.D. 14 3000 1416 7/ " 8 [22mm] O.D. 16 4000 1888 7/ " 8 [22mm] O.D. 8000 3776 7/ " 8 [22mm] O.D.
Single-Duct VAV Terminal Units VAV-PRC011M-EN 59
Single-Duct VAV Terminal Units Mechanical Specifications Single-Duct Terminal Units VCCF - Cooling Only VCWF - With Hot Water Coil VCEF - With Electric Coil Casing 22-gage galvanized steel. Agency Listing Unit is UL and Canadian UL Listed as a room air terminal unit. Control # 9N65. AHRI 880 Certified. Insulation 1/2" (12.7 mm) Matte-faced Insulation—Interior surface of unit casing is acoustically and thermally lined with ½-inch, 1.5 lb/ft3 (12.7 mm, 24.
Single-Duct VAV Terminal Units Outlet Conection Slip & Drive Connection—Terminal units come standard with slip & drive connection. Outlet Plenum—A sheet metal, insulated box with circular opening(s) is attached to main unit discharge at the factory. Circular opening(s) are centered on unit plenum to accept round ductwork connections. Outlet Plenum with Balancing Dampers—A sheet metal, insulated box with circular opening(s) is factory- connected to the main unit.
Single-Duct VAV Terminal Units Airflow Switch— An air pressure device designed to disable the heater. This is standard on singleduct with electrical reheat units. Line Fuse—An optional safety fuse located in the line of power of the electric heater to prevent power surge damage to the electric heater. Disconnect Switch—A optional factory-provided door interlocking disconnect switch on the heater control panel disengages primary voltage to the terminal.
Single-Duct VAV Terminal Units Pneumatic Controls Normally Open Actuator—Pneumatic 3-8 psig (20-55 kPa) spring-range pneumatic actuator. Normally-Closed Actuator—Pneumatic 8 -13 psig (55-90 kPa) spring-range pneumatic actuator. 3011 Pneumatic Volume Regulator (PVR)—The regulator is a thermostat reset velocity controller, which provides consistent air delivery within 5% of cataloged flow down to 18% or less of unit cataloged cfm, independent of changes in system static pressure.
Single-Duct VAV Terminal Units the optional factory mounted valve harness to make electrical connection quick and simple (120” plenum rated cable with quick connect tabs for control board interface).
Model Number Descriptions Digit 1, 2, 3—Unit Type Digit 29—Not Used Digit 4—Development Sequence PN = Pneumatic FM = Factory installation of customersupplied controller PVR = Pneumatic Volume Regulator F Digit 16—Insulation 0 A B D F G Digit 31—Not Used VDD= = VariTrane™ dual-duct Sixth Digit 5, 6—Primary Air Valve 05 06 08 10 12 14 16 = = = = = = = 5" inlet (350 cfm) 6" inlet (500 cfm) 6" inlet (900 cfm) 10" inlet (1400 cfm) 12" inlet (2000 cfm) 14" inlet (3000 cfm) 16" inlet (4000 cfm) = = =
Dual-Duct VAV Terminal Units Dual-duct units have two air valves. One heating valve and one cooling air valve modulate simultaneously to provide occupant comfort. These systems were popular prior to the energy crisis of the early 1970s. Popularity is increasing with system concepts which use one valve for maintaining and monitoring 100% ventilation air. Figure 1. Dual duct terminal unit The features of the dual-duct VAV terminal units are described by the product categories shown in bold.
Dual-Duct VAV Terminal Units 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 AHRI 885-2008 transfer function is listed. Example: VDDF, Cooling-Only Terminal Unit, Size 10 cooling, Size 10 heating (See air Valve Selection) Cooling Airflow: 1000 cfm Max.
Dual-Duct VAV Terminal Units General Data Table 36. Primary airflow control factory settings (per valve) - I-P Air Valve Size (in.
Dual-Duct VAV Terminal Units Performance Data Table 38. Air pressure drop-in. wg (l-P) Inlet Size Airflow Cfm VDDF 05 100 200 300 350 0.01 0.02 0.04 0.06 06 100 250 350 500 0.01 0.08 0.17 0.38 08 200 400 600 900 0.01 0.04 0.10 0.24 10 500 800 1100 1400 0.02 0.05 0.10 0.17 12 800 1200 1600 2000 0.01 0.03 0.06 0.10 14 1500 2000 2500 3000 0.04 0.07 0.12 0.19 16 2000 2500 3000 4000 0.03 0.04 0.06 0.10 Note: Pressure drops are per air valve Table 39.
Dual-Duct VAV Terminal Units Table 39. Air pressure drop-Pa (SI) (continued) 12 375 565 755 940 3 8 15 24 14 700 945 1180 1415 9 18 30 46 16 940 1180 1415 1885 6 10 14 25 Note: Pressure drops are per air valve Table 40. Integral outlet plenum air pressure drop-in. wg (I-P) Integral Outlet Configurations Outlet Diameter (in.) Airflow (Cfm) A,C B D,E F G H J 5 100 200 300 350 0.06 0.23 0.50 0.67 0.05 0.19 0.44 0.60 0.02 0.09 0.19 0.26 0.03 0.09 0.18 0.24 - 0.01 0.03 0.08 0.
Dual-Duct VAV Terminal Units OUTL CONVERSION CHART SYMBOL I II III IV A 0505 I, II, III 0606 II, III 0808 III, IV 1010 N/A G I, II N/A I, II, III N/A II, III, IV N/A III, IV III H J I, II N/A I, II, III N/A I, II, III N/A III, IV A,B,C D,E,F OUTL 203 mm (8") 254 mm (10") OUTLET PLENUM ARRANGEMENTS (TOP VIEW) OUTLET AVAILABILITY CHART-SEE OUTL CONVERSION FOR NOMINALØ VALV NOMINALØ 127 mm (5") 152 mm (6") B C D E F III G H J Table 42. Discharge sound power (dB)1, 2, 4 0.
Dual-Duct VAV Terminal Units Table 43. Radiated sound power (dB)1, 2, 4 0.5" Inlet Pressure 1.0" Inlet Pressure 1.5" Inlet Pressure 2.0" Inlet Pressure 3.
Dual-Duct VAV Terminal Units Table 44. Sound noise criteria (NC) Inlet Size (in) 5 6 8 10 12 14 16 CFM l/s 130 200 250 350 200 300 400 500 350 520 700 900 550 820 1100 1400 800 1200 1550 1600 2000 1100 1600 2100 3000 1400 2100 2800 3000 4000 61 94 118 165 94 142 189 236 165 245 330 425 260 387 519 661 378 566 732 755 944 519 755 991 1416 661 991 1321 1416 1888 Discharge1,2,4 Inlet Pressure (Ps)3,5 Inlet 0.5” 1.0” 1.5” 2.0” 3.
Dual-Duct VAV Terminal Units Dimensional Data DUAL-DUCT WITH OUTLET PLENUM (VDDF) L/s CFM INLET INLET SIZE (NOMINAL Ø) DISCHARGE DIMENSIONS COOL COOL HEAT COOL HEAT COOL HEAT A HEAT C B L D W H WT LBS [kg] 05 05 350 350 165 165 5" [127mm] 5" [127mm] 14.00" [356mm] 20.00" [508mm] 7.00" [178mm] 7.00" [178mm] 22.00" [559mm] 28.00" [711mm] 15.
Dual-Duct VAV Terminal Units DUAL-DUCT WITH OUTLET PLENUM (VDDF) 05 05 350 350 165 165 WT LBS [kg] 28.00" [711mm] 15.50" [394mm] 54 [24] 5" [127mm] 5" [127mm] 7.00" [178mm] 7.00" [178mm] 5" [127mm]22.00" [559mm] 06 05 500 350 236 165 6" [152mm] 06 06 500 500 236 236 08 06 900 500 425 236 08 08 900 900 425 425 10 08 1400 900 661 425 10 10 1400 1400 661 661 12 08 2000 900 994 425 12 10 2000 1400 994 661 10" [254mm] 9.
Dual-Duct VAV Terminal Units Mechanical Specifications Dual-Duct Terminal Unit Model VDDF Casing 22-gage galvanized steel. Hanger brackets provided. Agency Listing The unit is UL and Canadian UL. Listed as a room air terminal unit. Control # 9N65. AHRI 880 Certified. Insulation 1/2" (12.7 mm) Matte-faced Insulation—The interior surface of the unit casing is acoustically and thermally lined with ½-inch, 1.5 lb/ft3 (12.7 mm, 24.0 kg /m3) composite density glass fiber with a high-density facing.
Dual-Duct VAV Terminal Units Table 47. Air valve combinations available (continued) Air Valve Size in. (mm) Cataloged Airflow cfm Air Valve Size in.
Dual-Duct VAV Terminal Units differential pressure signal from the pressure transducer. Additionally, the controller can monitor either supply duct air temperature or CO2 concentration via appropriate sensors. The controller is provided in an enclosure with 7/8" (22 mm) knockouts for remote control wiring. A Trane UCM zone sensor is required. DDC Zone Sensor—The UCM controller senses zone temperature through a sensing element located in the zone sensor.
DDC Controls Tracer UC400 and UC210 Programmable BACnet Controllers The Tracer™ UC400 and UC210 controllers are programmable general purpose BACnet®, microprocessor-based, Direct Digital Controllers (DDC). When factory installed on Trane (Variable Air Volume) VAV terminal units, they are factory downloaded with appropriate VAV programs and configuration settings. Trane VAV units have been made with either pneumatic, analog electronic, or microprocessor controls (DDC VAV).
DDC Controls • When combined with the patented Trane Flow ring and pressure transducer, flow is repeatable to +/- 5% accuracy across the Pressure Independent (PI) flow range. (See Valve/Controller Airflow Guidelines section). • Improved 2-Point Air Balancing is available – Assures optimized flow-sensing accuracy across the operating range. This provides a more accurate airflow balancing method when compared to typical single-point flow correction air balancing.
DDC Controls the heat of the main AHU to keep plumbing lines from freezing. When available, the operation of the VAV unit fan (series or parallel) remains unaffected. Controller Flexibility • 24 VAC binary input that can be configured as a generic input or as occupancy input. When the DDC controller is operating with a Tracer ™ SC, the status of the input is provided to Tracer for its action.
DDC Controls Figure 2. Flow sensor single vs. airflow delivery 5 4" Flow Sensor DP (In. wg) 1 5" 6" 8" 10" 12" 14" 16" 0.1 0.01 10 100 1,000 10,000 Cfm Note: Flow sensor DP (in. wg) is measured at the flow ring to aid in system balancing and commissioning. See “Valve/Controller Airflow Guidelines” in each section for unit performance. Space Temperature Control Space temperature control applications are where Trane emerged as an industry leader in quality and reliability.
DDC Controls wall fin radiation, convector, etc.) or any combination of local and remote. The operating characteristics of the four basic types of VariTrane DDC terminal reheat are discussed. Single-Duct: On/Off Hot Water Reheat Three stages of on/off hot water reheat are available. Two-position water valves complete the HW reheat system and are either fully opened or fully closed. The heating minimum airflow setpoint is enforced during reheat.
DDC Controls of heating capacity to the heating load, resulting in more stable temperature control. The heating minimum airflow setpoint is enforced during reheat. The amount of reheat supplied is dependent on both the degree that the space temperature is below the active heating setpoint and the time that the space temperature has been below the active heating setpoint. If not already off, reheat de-energizes when the zone temperature rises more than 0.5°F (0.28°C) above the heating setpoint.
DDC Controls provide unmatched “peace of mind” by calling/paging the appropriate person(s) when specific alarms occur. Flow Tracking Control This enhanced VAV DDC controller feature allows two Trane VV550 controllers to coordinate modulation simultaneously. This allows a specific CFM offset to be maintained. The CFM offset provides pressurization control of an occupied space, while maintaining the comfort and energy savings of a VAV system.
DDC Controls Tracer UC210 and Tracer UC400 Programmable BACnet Controllers UC210 BACnet Controller UC400 BACnet Controller The Tracer™ UC210 and Tracer UC400 are programmable controllers available on Varitrane VAV boxes which provide accurate airflow and room temperature control. The controller can operate in pressure-independent or pressure-dependent. The UC210 and UC400 monitor zone temperature, temperature set point, and flow rate.
DDC Controls Operating Environment 32 to 140°F, (0 to 60°C) 5% to 95% RH, Non-condensing Storage Environment -40 to 180°F (-40 to 82.2°C), 5% to 95%RH, Non-Condensing Physical Dimensions Width: 5.5" (139.7 mm) Length: 4.5" (69.85 mm) Height: 2.0" (44.45 mm) Connections • UC210: 1/4 tabs and removable screw terminals • UC400: Removable screw terminals Communications BACnet® MS/TP Heat Staging Staged electric, SCR electric, proportional or two-position hot water or pulse-width modulation.
DDC Controls Trane LonMark™ DDC VAV Controller (VV550) This LonMark™ certified controller uses the Space Comfort Controller (SCC) profile to exchange information over a LonTalk™ network. Networks with LonMark certified controllers provide the latest open protocol technology. Being LonMark certified guarantees that owners and end-users have the capability of adding Trane products to other “open” systems and relieves owners of the pressure and expense of being locked into a single DDC supplier.
DDC Controls • HW coil VAV units in ventilation flow control (VFC) have a Freeze protection algorithm to protect the water coil and the internal space from water damage. This is accomplished by driving the water valve to maximum position on alarm conditions. System-Level Optimization Trane controllers are designed to integrate into Trane Tracer SC and leverage clear and clean unitcontroller related data for system level control decisions.
DDC Controls • CO2 demand controlled ventilation enables a HVAC system to adjust ventilation flow based on the current CO2 concentration in the zone. Trane demand controlled ventilation strategies are pre-defined for simplified application and can be easily customized to meet the needs of a specific system. Trane DDC VAV Controller Logic with VV550 Controls Control Logic Direct Digital Control (DDC) controllers are today’s industry standard.
DDC Controls General Operation-Cooling In cooling control action, the DDC controller matches primary airflow to cooling load. The DDC controller will automatically change over to heating control action if the supply air temperature is above a configured/editable setpoint. When the supply air temperature is less than 10 degrees below this setpoint, the controller will automatically switch to cooling control action.
DDC Controls Single-Duct: On/Off Electric Reheat One, two, or three stages of staged electric reheat are available. The heating minimum airflow setpoint is enforced during reheat. Stage 1 is energized when the space temperature falls below the active heating setpoint and minimum airflow requirements are met. When the zone temperature rises above the active heating setpoint by 0.5°F (0.28°C), stage 1 is de-energized. Stage 2 energizes when the space temperature is 1°F (0.
DDC Controls savings of a VAV system. A flow tracking system in a given zone consists of a standard Space Comfort Control VAV (see B) unit plus a single-duct, cooling-only, exhaust VAV unit (see C). As the supply VAV unit modulates the supply airflow through the air valve to maintain space comfort, the exhaust box modulates a similar amount to maintain the required CFM differential.
DDC Controls The controller monitors zone temperature setpoints, zone temperature and its rate of change and valve airflow (via flow ring differential pressure). The controller also accepts an auxiliary duct temperature sensor input or a supply air temperature value from Tracer™ SC. Staged electric heat, pulse width modulated electric heat, proportional hot water heat or on/off hot water heat control are provided when required. The control board operates using 24-VAC power.
DDC Controls Table 48.
DDC Controls Table 50.
DDC Controls Direct Digital Controller—Unit Control Module (UCM4) The Trane direct digital controller Unit Control Module (DDC-UCM) is a microprocessor-based terminal unit with non-volatile memory which provides accurate airflow and room temperature control of Trane VAV air terminal units. The UCM can operate in a pressure-independent or a pressuredependent mode and uses a proportional plus integral control algorithm.
DDC Controls Connections 1/4" (6.35 mm) Stab Connections Communications RS-485; Stranded wire, twisted pair, shielded, copper conductor only, 18–20 awg Fan Control • Series fan: On unless unoccupied and min. flow has been released. • Parallel fan: On when zone temperature is less than heating setpoint plus fan offset. Off when zone temperature is more than heating setpoint plus fan offset plus 0.5°F (0.28°C).
DDC Controls determining control action of the DDC controller. When configured for a CO2 sensor, the value of the input is used as a status-only input by Tracer SC. • Dual-duct support with two DDC controllers. One DDC controller controls the cooling air valve and the other controller controls the heating air valve. With constant-volume sequences, the discharge air volume is held constant by controlling discharge air volume with the heating UCM. Figure 6. Flow sensor signal vs.
DDC Controls is below the active heating setpoint and the amount of time that the space temperature has been below the active heating setpoint.
DDC Controls Air-Fi™ Wireless System Wireless Communications Interface (WCI) The Trane® Wireless Communication Interface (WCI) enables wireless communication between system controls, unit controls, and wireless sensors for the new generation of Trane control products. The WCI works with BACnet DDC VAV unit controllers and replaces the need for communication wire in all system applications. Note: See BAS-SVX40*-EN, Installation, Operation and Maintenance, Air-Fi Wireless Comm for more information.
DDC Controls Dimensions 2.896 in (73.55 mm) 1.419 in (36.03 mm) 0.118 in (3.00 mm) 3.385 in (86.0 mm) 4.677 in (118.8 mm) 0.650 in (16.50 mm) 2.480 in (63.0 mm) R0.71 in (R1.80 mm) TYP 0.236 in (6.0 mm) 2.62 in (66.55 mm) 1.344 in (34.14 mm) Specifications Operating Temperature -40 to 158ºF (-40 to 70ºC) Storage temperature -40 to 185ºF (-40 to 85°C) Storage and operating humidity range 5% to 95% relative humidity (RH), non-condensing Voltage 24 Vac/Vdc nominal ± 10%.
DDC Controls Radio frequency 2.4 GHz (IEEE Std 802.15.4-2003 compliant) (2405–2480 MHz, 5 MHz spacing) Radio channels 16 Address range Group 0–8, Network 1–9 Mounting Fits a standard 2 in. by 4 in. junction box (vertical mount only). Mounting holes are spaced 3.2 in. (83 mm) apart on vertical center line. Includes mounting screws for junction box or wall anchors for sheet-rock walls. Overall dimensions: 2.9 in. (74 mm) by 4.7 in.
DDC Controls Dimensions Receiver/Translator Enclosure: Plastic Height: 4.75" (120.6 mm) Width: 2.90" (73.5 mm) Depth: 1.08" (27.5 mm) Enclosure: Plastic Height: 4.78" (121.4 mm) Width: 2.90" (73.5 mm) Depth: 1.08" (27.5 mm) Sensor/Transmitter DDC Zone Sensor The DDC zone sensor is used in conjunction with the Trane direct digital controller to sense the space temperature and to allow for user adjustment of the zone setpoint.
DDC Controls CO2 Wall Sensor and Duct CO2 Sensor Figure 7. CO2 wall sensor (L) and duct CO2 sensor (R) The wall- and duct-mounted carbon dioxide (CO2) sensors are designed for use with Trane DDC/ UCM control systems. Installation is made simple by attachment directly to the DDC/ UCM controller. This allows the existing communication link to be used to send CO2 data to the higherlevel Trane control system.
DDC Controls Resolution of Analog Outputs 10 ppm CO2 Power Supply Nominal 24 VAC Power Consumption <5 VA Housing Material ABS plastic Dimensions 4 1/4" x 3 1/8" x 1 7/16" (Wall only) (108 mm x 80 mm x 36 mm) (Wall only) 3 1/8" x 3 1/8" x 7 ¾" (80 mm x 80 mm x 200 mm) DDC Zone Sensor with LCD The DDC zone sensor with LCD has the look and functionality of the standard Trane DDC zone sensor but has a LCD display.
DDC Controls Zone Occupancy Sensor The zone occupancy sensor is ideal for spaces with intermittent occupancy. It is connected to the Trane DDC UCM and allows the zone to shift to unoccupied setpoints for energy savings when movement is not detected in the space. The zone occupancy sensor has a multi-cell, multi-tier lens with a maximum field of view of 360°. The maximum coverage area of the sensor is 1200 square feet with a maximum radius of 22 feet from the sensor when mounted at 8 feet above the floor.
DDC Controls Factory or Field Mounted Auxiliary Temperature Sensor The auxiliary temperature sensor is used in conjunction with the Trane DDC controller to sense duct temperature. When the DDC controller is used with a Building Automation System, the sensor temperature is reported as status only. When the DDC control is used as stand alone configuration and the sensor is placed in the supply air duct, the sensor determines the control action of the UCM in a heat/cool changeover system.
DDC Controls Two-Position Water Valve Two-position hot water valves are used with Trane DDC/UCM controls and analog electronic controls. Valve actuation is by a hysteresis synchronous motor. All valves are field-installed and convertible from three-way to two-way by means of an included cap.
DDC Controls Proportional Water Valve The proportional water valve is used to provide accurate control of a hot water heating coil to help maintain a zone temperature setpoint. The valve is a ball design and comes in available in four different flow capacities for proper controllability. The valves are field-adjustable for use as a two- or three-way configuration. The valves ship in a two-way configuration with a plug that is installed loose in the bypass port.
DDC Controls VAV Piping Package • Offered in both 2-way and 3-way configurations • The Automatic Balancing Flow Control sized for the specified VAV coil and gpm. • Field connections are NPT with Coil connections Sweat to match the Trane VAV water coil copper • For 3-way configuration the connections between the ATC valve and the supply shut off assembly are sweat to allow for field installation of hose or piping connection between the supply and return lines.
DDC Controls Differential Pressure Transducer The differential pressure transducer is used in conjunction with the Trane direct digital controller and analog electronic controller. The pressure transducer measures the difference between the high-pressure and lowpressure ports of the Trane flow ring. The transducer is self-adjusting to changes in environmental temperature and humidity. Specifications Input Pressure Range 0.0 to 5.0 in.
DDC Controls Transformers The transformer converts primary power supply voltages to the voltage required by the direct digital controller and analog. The transformer also serves to isolate the controller from other controllers which may be connected to the same power source.
DDC Controls Trane Non-Spring Return Actuator This actuator is used with DDC controls and retrofit kits. it is available with a 3-wire floating-point control device. It is a direct-coupled over the shaft (minimum shaft length of 2.1”), enabling it to be mounted directly to the damper shaft without the need for connecting linkage. The actuator has an external manual gear release to allow manual positioning of the damper when the actuator is not powered.
DDC Controls Trane Spring Return Actuator This actuator is used with DDC controls and is a floating-point control device. It is direct-coupled over the shaft (minimum shaft length of 2.1"), enabling it to be mounted directly to the damper shaft without the need for connecting linkage. The actuator is Underwriters Laboratories Standard 60730 and Canadian Standards Association C22.2 No. 24-93 certified as meeting correct safety requirements and recognized industry standards.
DDC Controls VariTrane™ DDC Retrofit Kit The retrofit kit provides the system advantages of VariTrane DDC controls to building owners for existing systems. The kit can be applied when converting from pneumatic or analog controlled systems to a DDC controlled system. The kit may be used on existing single-duct units with hot water and electric reheat (three stages), dual-duct units, and all fan-powered units (both series and parallel) with hot water and electric reheat (two stages).
DDC Controls Humidity 5% to 95% RH, Non-Condensing Ambient Temperature -22 to 122°F (-30C to 50°C) Storage Environment -40 to 176°F (-40 to 80°C) Torque Min 35 in.-lb (4Nm), Independent of load Running Time 95 sec. for 0 to 35 in-lb Noise Rating Less than 35 dB (A) Weight 1.2 lbs (0.55 kg) Static Pressure Controller The Trane static pressure controller will sense duct static pressure and modulate a relief device in an effort to limit maximum duct static pressure.
DDC Controls Electric Heater Silicon-Controlled Rectifier (SCR) • Microprocessor based burst-fire controller / SSR • Low-voltage control • Output status indicator • 0-100% Control Range • Synchronized triggering output (P3) • 20 AC Cycles Base Period • Coupled with the averaging temperature sensing matrix and UC210 or UC400 controls, allows use of energy efficient dual max algorithm.
DDC Controls DD00—Available for all VariTrane Units (Trane actuator for field-installed DDC controls) A unit controller is not provided. The air damper actuator is provided with an integral screw terminal block. The fan contactor (fan-powered units), 24-VAC control power transformer (optional for single- and dual-duct units), and factory-installed electric heater contactor wires are attached to the outside of the unit for field connection of controls.
DDC Controls Available on all VariTrane Units FM00 – Customer-supplied actuator and DDC controller factory-installed. FM01 – Trane actuator and customer-supplied DDC controller factory-installed All customer furnished controllers and actuators are installed and wired per control manufacturer's specifications. Metal control enclosure is standard.
Pneumatic Controls 3011 Pneumatic Volume Regulator The pneumatic volume regulator (PVR) is a controller that provides a consistent airflow to the space, regardless of varying inlet duct pressure conditions, in response to a pneumatic thermostat signal. The controller maintains minimum and maximum airflow setpoints. The 3011 PVR can be set to control either normally open or normally-closed air valve actuators and can be calibrated to accept either direct-acting or reverse-acting thermostat signals.
Pneumatic Controls 3501 Pneumatic Volume Regulator Tubing Connections: 1/4" O.D. tubing connections The 3501 PVR can be set to control either normally open or normally-closed air valve actuators and can be calibrated to accept either direct-acting or reverse-acting thermostat signals. Fixed reset control of maximum and minimum airflow setpoints is provided. The controller is used primarily in dual-duct constant-volume applications because of its linear output response characteristics.
Pneumatic Controls Height: 4.1" (104.1 mm) Weight: 12 oz (340 g) Pneumatic Damper Actuator The pneumatic actuator is designed for use on VAV terminal units in HVAC systems. The damper actuator mounts to a standard ½" diameter shaft by a pin and cross hold arrangement, retaining clip, and non-rotation bracket. Two model actuators are offered with spring ranges of 3–8 psi or 8–13 psi. Specifications Effective Area 8 sq inches (51.
Pneumatic Controls Bias Adjustment +/- 15 psig (103 kPa) Main Air Pressure 15-30 psig (103–207 kPa) Air Consumption 18 scim (0.295 L/m) at 20 psig (138 kPa) main air pressure Operating Environment 40 to 120ºF (4°C to 49°C) Storage Environment -40 to 140ºF (-40 to 60°C) Physical Dimensions Width: 1.5" (38.1 mm) Length: 1.5" (38.1 mm) Height: 2.5" (63.
Pneumatic Controls Signal Limiter Tubing Connections: 3/16" (4.8 mm) nipples for 1/4" (6.4 mm) polyethylene tubing The pneumatic signal limiter is a pressure limiting type device. The output pressure from the signal limiter is not allowed to rise above the signal limiter’s setting. Adjustments to the output pressure setting are made via a screw on the back side of the valve. Specifications Factory Setting Maximum output = 8 psig (55.2 kPa) Adjustable from 2–12 psig (13.8–82.
Pneumatic Controls PC00 – VCCF - Single-Duct Terminal Units (Normal Operation: Cooling Only) Normally-Closed Damper and Actuator (Direct-Acting Thermostat) With an increase in room temperature, the thermostat output pressure is increased and the actuator opens to increase primary cooling airflow to the space. With a decrease in room temperature, the opposite action occurs. S 20 (137.9) Actuator Two Pipe Remote Mounted T-Stat (Direct Acting) Restrictor Tee 89.6 55.2 20.
Pneumatic Controls PN05 – VCCF and VCEF - Single-Duct Terminal Units (Normal Operation: Cooling with Electric Reheat) Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator (Direct-Acting Thermostat) With an increase in room temperature, the thermostat output pressure is decreased. This signal is input for the volume regulator, which also receives the inputs from the high- and low-pressure sides of the flow ring.
Pneumatic Controls PN32 – VCWF - Single-Duct Terminal Units (Normal Operation: Cooling with Hot Water Reheat - Constant Volume) Normally-Open Damper, Actuator, and 3011 Pneumatic Volume Regulator (Direct-Acting Thermostat) The unit shall operate to a constant volume flow regardless of changes in space temperature. The volume regulator receives the inputs from high- and low-pressure sides of the flow ring.
Pneumatic Controls PN00 – VCCF - Single-Duct Terminal Units (Normal Operation: Cooling Only) Normally-Open Damper and Actuator (Reverse-Acting Thermostat) With an increase in room temperature, the thermostat output pressure is decreased and the actuator opens to increase primary cooling airflow to the space. With a decrease in room temperature, the opposite action occurs. S 20 (137.9) Two Pipe Remote Mounted T-Stat (Reverse Acting) Actuator 20.7 55.
Pneumatic Controls PC05 – VCCF and VCEF - Single-Duct Terminal Units (Normal Operation: Cooling with Electric Reheat) Normally-Closed Damper, Actuator, and 3011 Pneumatic Volume Regulator (Reverse-Acting Thermostat) With an increase in room temperature, the thermostat output pressure is decreased. This signal is input for the volume regulator, which also receives the inputs from the high- and low-pressure sides of the flow ring.
Pneumatic Controls PN08 – VDDF - Dual-Duct Terminal Units (Normal Operation: Cooling and Heating) Normally-Open Heating Damper with Actuator and Normally-Open Cooling Damper with Actuator (Reverse-Acting Thermostat) With an increase in room temperature, the thermostat pressure is decreased. The cooling valve actuator opens the damper to increase primary cooling flow to the space, the heating valve is closed. With a decrease in room temperature, the heating valve modulates and the cooling valve is closed.
Pneumatic Controls PN10 – VDDF - Dual-Duct Terminal Units (Normal Operation: Cooling and Heating - Constant Volume) Normally-Open Heating Damper with Actuator, Normally-Open Cooling Damper with Actuator, and 3501 Pneumatic Volume Regulator (Qty of 2) (Direct-Acting Thermostat) With an increase in room temperature, the thermostat output pressure is increased. This signal is input to the volume regulators, which also receives the inputs from the high- and low-pressure from the flow ring.
Pneumatic Controls PN00 – VPCF, LPCF Parallel Fan-Powered Without Reheat (Normal Operation: Cooling Only) Normally-Open Damper and Actuator (Reverse-Acting Thermostat) With an increase in room temperature, the thermostat output pressure is decreased and the actuator opens to increase primary cooling airflow to the space. With a decrease in room temperature, the opposite action occurs until the damper is fully closed.
Controls Specifications For all VariTrane™ units, the unit controller continuously monitors the zone temperature and varies the primary airflow as required to meet zone setpoints. Airflow is limited by adjustable minimum and maximum setpoints. Additionally, for series fan-powered units, the controller will start and run the fan continuously during the occupied mode and intermittently during the unoccupied mode. Upon a further call for heat, any hot water or electric heat associated with the unit is enabled.
Controls Specifications returns the system to unoccupied mode. The digital display zone sensor requires seven wires, one for 24-VAC power. Pneumatic Controls Normally-Open Actuator Pneumatic 3 to 8 psig (20 to 55 kPa) spring-range pneumatic actuator. Normally-Closed Actuator Pneumatic 8 to 13 psig (55 to 90 kPa) spring-range pneumatic actuator.
Controls Specifications • Controls Option – PC03: Cooling and Heating, Normally-Closed heating damper, NormallyOpen cooling damper, actuators only - Direct-Acting Thermostat • Controls Option – PC04: Cooling with hot water reheat, Normally-Closed damper, 3011 PVR Direct-Acting Thermostat • Controls Option – PC05: Cooling with electric reheat, Normally-Closed damper, 3011 PVR Reverse-Acting Thermostat Options Power Fuse (cooling only and hot water units, and VDDF) An optional fuse is factory-installed
Controls Specifications Other Options Available VAV-PRC011M-EN • DDC Zone Sensors - wired or wireless • 2-Position & Modulating Water Valves • Control Transformer (Ships loose with mounting plate for 4x4 junction box) • Auxiliary Temperature Sensor • Zone Occupancy Sensors • CO2 Sensors (Room- or duct-mounted) 137
Application Considerations Variable-Air-Volume (VAV) System RA EA OA supply fan PA VAV box cooling coil variablespeed drive thermostat SA VAV System There are two primary types of VAV systems—single-duct and dual-duct. Single-Duct Systems Single-duct systems include one supply fan and a single supply duct, which is attached to each zone. The supply fan delivers cooled air to the VAV zones in variable volumes, depending upon the cooling requirements.
Application Considerations Trane's main product in this type of application is called VariTrac™. VariTrane products can also be used in these systems. (These types of systems are beyond the scope of this manual and are discussed in detail in the VariTrac II Manual.
Application Considerations VariTrane VAV Terminal Units The function of the VariTrane™ terminal unit in a VAV control zone is to vary the volumetric airflow rate to the zone. VariTrane units are available with either microprocessor-based DDC controls or pneumatic or analog electronic controls. Factory-installed controls are available with all types of terminal units. Figure 9. Single-Duct cooling only unit (L) and single-duct unit with hot water coil (R) Figure 10.
Application Considerations Fan-Pressure Optimization With Trane's Integrated Comfort System, the information from VAV terminal units can be used for other energy-saving strategies. Fan-pressure optimization is the concept of reducing the supply fan energy usage based on the position of the terminal unit dampers. The control system allows this scenario. The system polls the VAV units for the damper position on each unit.
Application Considerations Figure 12. Ventilation reset RTU controller • Reset intake airflow OA SA RA VAV Controllers Tracer SC • Find highest OA fraction • Calculate current system intake airflow (ASHRAE 62.1) • Required outdoor airflow • Current primary airflow • Current OA fraction Control Types VAV terminal units are available with many different options. These options fall into three main categories of controls: direct digital (DDC), pneumatic, and analog electronic.
Application Considerations Operating and Maintenance Costs—DDC controls can be networked together via wired or wireless networks to provide system-control strategies for energy savings. Multiple controllers can be easily monitored and adjusted from a remote location. DDC controls also have system and individual diagnostic capability.
Application Considerations Key features of the system include: • An advanced unit controller • Flexible system design • User-friendly interaction Pneumatic Controls Basic Information Pneumatic controls modulate air pressure of a controller to maintain setpoint. For VAV systems, there are two primary types of pneumatic controllers—the room thermostat and the pneumatic volume regulator (PVR). Room Thermostats The most visible controller to the customer is the room thermostat.
Application Considerations Currently, VariTrane offers two models of pneumatic volume regulators in its controls offering— the 3011 regulator (used in most applications) and the 3501 model (used in dual-duct constantvolume applications). The primary difference is the 3501 PVR’s ability to change the velocity pressure linearly with a change in thermostat pressure, which results in improved stability at low flows. In contrast, the 3011 PVR resets the velocity pressure with a change in thermostat pressure.
Application Considerations Flow Measurement and Control One of the most important characteristics of a VAV terminal unit is its ability to accurately sense and control airflow. The VariTrane terminal unit was developed with exactly that goal in mind. The patented, multiple-point, averaging flow ring measures the velocity of the air at the unit primary air inlet.
Application Considerations VP = TP - SP (All units are expressed in inches of water) The amount of air traveling through the inlet is related to the area of the inlet and the velocity of the air: AIRFLOW = AREA (square feet) x AVERAGE VELOCITY (feet per minute) Accuracy The multiple, evenly spaced orifices in the flow ring of the VariTrane terminal unit provide quality measurement accuracy even if ductwork turns or variations are present before the unit inlet.
Application Considerations Linearity With the increase in DDC controls over pneumatic controls, the issue of linearity is not as great as it once was. The important aspect of flow measurement versus valve position is the accuracy of the controller in determining and controlling the flow. Our units are tested for linearity and that position versus airflow curve is downloaded and commissioned in the factory to insure proper control of the unit. Reheat Options Figure 15.
Application Considerations Electric Reheat Electric heating coils are applied on VAV terminal units as terminal reheat devices. Electric heat coil capacity is rated in kilowatts (kW). Coils are available with the total capacity divided into one, two, or three stages. Electric heat coils are available in single-phase or three-phase models. This refers to the type of power source connected to the coil. Single-phase models have resistance elements internally connected in parallel.
Application Considerations Insulation Encapsulated edges Insulation in a VAV terminal unit is used to avoid condensation on the outside of the unit, to reduce the heat transfer from the cold primary air entering the unit, and to reduce the unit noise. The VariTrane line offers four types of unit insulation. The type of facing classifies the types of insulation. To enhance IAQ effectiveness, edges of all insulation types have metal encapsulated edges.
Application Considerations pressure levels and ultimately the NC within the space, is from radiated sound. This is readily known for fan-powered units, but less commonly known for single- and dual-duct units. Radiated sound emanates from the unit and enters the occupied space via means other than through the supply ductwork. The most typical path is through the plenum space, then through the ceiling, then into the occupied space.
Application Considerations Table 51. Octave band frequencies Octave Band Center Frequency Band Edge Frequencies 1 2 3 4 63 125 250 500 44.6-88.5 88.5-177 177-354 354-707 5 6 7 8 1000 2000 4000 8000 707-1414 1414-2830 2830-5650 5650-11300 Attenuators that are simple “cups” at the plenum inlet(s) have been shown in Trane’s acoustical mock-up to provide no measurable reduction in sound pressure in the critical octave bands which set the occupied space noise criteria.
Application Considerations Concert Hall NC-22 Hospital Room NC-30 School Room NC-35 General Office NC-40 Cafeteria NC-45 Factory NC-65 Path Attenuation Sound is generated by a terminal unit can reach the occupied space along several paths. The terminal unit generated sound will lose energy—i.e., the energy is absorbed by path obstacles— as it travels to the occupied space. This acoustical energy dissipation as it travels to the occupied space is called path attenuation.
Application Considerations scheduling units much easier. Contact the local sales office or the Trane C.D.S.™ department for more details on this program. Design Methods The two most widely used supply duct design methods—equal friction and static regain—are discussed below. Equal Friction – Using this method, ducts are sized at design flow to have roughly the same static pressure drop for every 100 feet of duct.
Application Considerations static pressure is given up for increased velocity pressure). The pressure loss is sometimes mistaken as a loss due to the function of the terminal unit. The turbulence is at its greatest just downstream of the reducer. Unfortunately, this is the location of the flow ring at the air-valve inlet. The reducer will cause the flow ring to give an inaccurate and inconsistent reading because of the turbulent air.
Application Considerations Table 53. Conversions of velocity, pressure, and flow rate To convert From To Multiply by Velocity Velocity Ft/min M/s M/s Ft/min 0.00508 196.850 Pressure Pressure Pressure Pressure Pressure Pressure Psi Ft of water In. of water Pa Pa Pa Pa Pa Pa Psi Ft of water In. of water 6894.76 2988.98 249.082 0.000145038 0.000334562 0.00401474 Cfm Cfm Gpm m3/s L/s L/s L/s m3/s L/s Cfm Cfm Gpm 0.4719 0.000471947 0.0630902 2118.88 2.1191 15.
Application Considerations Chilled-Water VAV Systems Applications Engineering Manual Discusses proper design and application of chilled-water, VAV systems.
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