Fan Inlet Airflow Measuring System - Trane CSAA Installation, Operation And Maintenance Manual

Start-Up
Table 50. Side inlet low-flow Traq dampers - diagonal economizer section
Traq damper
Unit size Part number
4 495100860001
6 495100860001
8 495100860001
10 495100870001
12 495100870001
14 495100870001
17 495100860001
21 495100890001
25 495100870001
30 495100890001
35, 40 495100900001
50 495100880001
57 495100880001
66 495100900001
80 495100900001
100, 120 495100900001
Trane utilizes AMCA certification for airflow measuring stations. Trane certifies that the Traq damper herein is licensed to bear the
AMCA seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 611 and comply
with the requirements of the AMCA Certified Ratings Program.
The certification program provides the engineer and owner assurance that manufacturer-published performance ratings for
airflow measurement stations are accurate and repeatable. Trane Traq dampers are certified with the integral ventilation control
module which converts differential pressure to an electronic signal for control.
Refer to Performance Climate Changer Air Handler catalog CLCH-PRC015-EN for Traq damper testing and rating information.

Fan Inlet Airflow Measuring System

A fan inlet airflow measuring system (piezometer) is
available on many centrifugal and plenum fans. Trane's
system determines airflow using a static pressure
differential.
Note: This type of system is different than a total pressure
or thermal dispersion system. As such, the
calculations will be different.
Each system comes with a differential pressure
transmitter. The minimum diameter is connected to the LO
port of the transmitter and the reference pressure point is
connected to (or actually is) the HI port of the transmitter.
136
size (in) Damper type
13 Min. Outside Air
13 Min. Outside Air
13 Min. Outside Air
16 Min. Outside Air
16 Min. Outside Air
16 Min. Outside Air
13 Min. Outside Air
20 Min. Outside Air
16 Min. Outside Air
20 Min. Outside Air
28 Min. Outside Air
24 Min. Outside Air
24 Min. Outside Air
28 Min. Outside Air
28 Min. Outside Air
28 Min. Outside Air
Peak velocity Total area
Qty (fpm) (ft
1 2475 0.92
1 2475 0.92
1 2475 0.92
1 2475 1.40
1 2475 1.40
1 2475 1.40
1 2475 0.92
1 2600 2.18
1 2475 1.40
1 2600 2.18
1 2600 4.27
1 2600 3.14
1 2600 3.14
1 2600 4.27
1 2600 4.27
1 2600 4.27
Figure 168. Fan inlet airflow measuring system
CFM@10VDC L/s@ 10VDC
2
) peak velocity peak velocity
2279
2279
2279
3455
3455
3455
2279
5671
3455
5671
11,112
8164
8164
11,112
11,112
11,112
CLCH-SVX07K-EN
1076
1076
1076
1630
1630
1630
1076
2676
1630
2676
5244
3853
3853
5244
5244
5244