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VAV-PRC011M-EN 19
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. 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, dual-duct, 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: 1) Copy/Paste from spreadsheets like
Microsoft® Excel; 2) Easily arranged fields to match your schedule; and 3) 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.
General Data
Table 2. Primary airflow control factory settings - I-P
Control Type
Air Valve Size
(in.)
Maximum Valve
Cfm
Maximum Controller
Cfm
Minimum Controller
Cfm Constant Volume Cfm
Direct Digital Control/
UCM
4
5
6
225
350
500
25-225
40-350
60-500
0,25-225
0,40-350
0,60-500
25-225
40-350
60-500
8
10
12
900
1400
2000
105-900
165-1400
240-2000
0,105-900
0,165-1400
0,240-2000
105-900
165-1400
240-2000
14
16
24 x 16
3000
4000
8000
320-3000
420-4000
800-8000
0,320-3000
0,420-4000
0,800-8000
320-3000
420-4000
800-8000
Pneumatic with
Volume Regulator
4
5
6
225
350
500
38-225
63-350
73-500
0,38-225
0,63-350
0,73-500
38-225
63-350
73-500
8
10
12
900
1400
2000
134-900
215-1400
300-2000
0,134-900
0,215-1400
0,300-2000
134-900
215-1400
300-2000
14
16
24 x 16
2887
3789
7745
408-2887
536-3789
1096-7745
0,408-2887
0,536-3789
0,1096-7745
408-2887
536-3789
1096-7745
- Product Catalog 1
- Introduction 2
- Table of Contents 3
- UC210 BACnet Controller 8
- UC400 BACnet Controller 8
- Air-Fi Wireless System 9
- Wireless Zone Sensor Set 9
- Pneumatic Controller 10
- Binary Input Controller 10
- Features and Benefits 11
- Agency Certifications 12
- Model Number Descriptions 14
- Selection Procedure 17
- General Data 19
- 20 VAV-PRC011M-EN 20
- Performance Data 21
- 22 VAV-PRC011M-EN 22
- VAV-PRC011M-EN 23 23
- 24 VAV-PRC011M-EN 24
- VAV-PRC011M-EN 25 25
- 26 VAV-PRC011M-EN 26
- VAV-PRC011M-EN 27 27
- 28 VAV-PRC011M-EN 28
- VAV-PRC011M-EN 29 29
- 30 VAV-PRC011M-EN 30
- VAV-PRC011M-EN 31 31
- 32 VAV-PRC011M-EN 32
- VAV-PRC011M-EN 33 33
- 34 VAV-PRC011M-EN 34
- VAV-PRC011M-EN 35 35
- 36 VAV-PRC011M-EN 36
- VAV-PRC011M-EN 37 37
- 38 VAV-PRC011M-EN 38
- Electrical Data 39
- 40 VAV-PRC011M-EN 40
- VAV-PRC011M-EN 41 41
- 42 VAV-PRC011M-EN 42
- VAV-PRC011M-EN 43 43
- 44 VAV-PRC011M-EN 44
- VAV-PRC011M-EN 45 45
- 46 VAV-PRC011M-EN 46
- VAV-PRC011M-EN 47 47
- 48 VAV-PRC011M-EN 48
- VAV-PRC011M-EN 49 49
- 50 VAV-PRC011M-EN 50
- Dimensional Data 51
- 52 VAV-PRC011M-EN 52
- VAV-PRC011M-EN 53 53
- 54 VAV-PRC011M-EN 54
- VAV-PRC011M-EN 55 55
- LEFT HAND RIGHT HAND 56
- VAV-PRC011M-EN 59 59
- Mechanical Specifications 60
- Outlet Conection 61
- Hot Water Coils 61
- Electric Heat Coils 61
- Electric Heat Options 61
- Direct Digitals Controls 62
- Control Options 63
- Hot Water Valves 63
- 64 VAV-PRC011M-EN 64
- Dual-Duct VAV Terminal Units 66
- Octave Band 234567NC 67
- Outlet Connection 77
- Direct Digital Controls 77
- Reliable Operation 80
- Safe Operation 80
- System-Level Optimization 80
- Simplified Installation 80
- Controller Flexibility 81
- Control Logic 81
- Space Temperature Control 82
- General Operation-Cooling 82
- Ventilation Control 84
- Flow Tracking Control 85
- General Features and Benefits 88
- ONMARK open protocol 94
- DDC Controls 100
- Air-Fi™ Wireless System 101
- Dimensions 102
- Specifications 102
- DDC Zone Sensor 104
- Wall Sensor and Duct CO 105
- DDC Zone Sensor with LCD 106
- Zone Occupancy Sensor 107
- Two-Position Water Valve 109
- Proportional Water Valve 110
- VAV Piping Package 111
- Transformers 113
- Trane Spring Return Actuator 115
- VariTrane™ DDC Retrofit Kit 116
- Retrofit Kit Actuator 116
- Static Pressure Controller 117
- Pneumatic Controls 121
- Pneumatic Damper Actuator 123
- Reversing Relay 123
- Signal Limiter 125
- VAV-PRC011M-EN 133 133
- Controls Specifications 134
- DDC Retrofit Kit (VRTO) 136
- Retrofit Kit Options 136
- Other Options Available 137
- Application Considerations 138
- Terminal Heat 139
- Dual-Duct Systems 139
- VariTrane VAV Terminal Units 140
- VAV Terminal Unit Types 140
- Fan-Pressure Optimization 141
- Ventilation Reset 141
- Control Types 142
- Pneumatic Control Systems 143
- Room Thermostats 144
- Pneumatic Volume Regulators 144
- Flow Measurement and Control 146
- Accuracy 147
- Air Density Effects 147
- Reheat Options 148
- Electric Reheat 149
- Insulation 150
- Acoustics 150
- Insulation types 151
- Placement of units 151
- Unit Attenuation 151
- Certification and Testing 152
- Duct Design 153
- Best Practices 154
- Unit Conversions 155
- VariTrac™ catalog 157
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