Download Trane Performance Air Handlers Quick Reference Guide

Selection Procedure
Note: For specific dimensional and weight information, refer to the unit submittals. The
dimensions and weights in this manual are approximate. Trane has a policy of continuous
product and product data improvement and reserves the right to change design and
specifications without notice.
1. Size the air-handling unit based on airflow through the cooling coil (see Table 1). The unique
fin design of Trane coils enables cooling coil selections at velocities in excess of 625 fpm with
no moisture carryover. The coil moisture carryover curves from tested data are built into the
Trane Official Product Selection System (the TOPSS™ program). Use this system to select coils.
2. Choose the coil section (see Table 2). Unit size, coil type, and coil rows determine the minimum
coil section size required.
3. Select a filter type and check face velocities (see Table 3). The maximum recommended face
velocity for pleated media, permanent, bag, and 12-inch cartridge filters is 625 fpm; for
throwaway and HEPA filters, it is 500 fpm.
Note: If selecting an outdoor unit with an inlet hood, verify airflow limitations using Table 4.
4. Design the basic air-handling system.
5. Estimate system static pressure requirements and select a fan (see Table 5 and Table 6).
6. Total the overall air-handling unit dimensions and weights using Table 7 and Table 8.
Note: If selecting an outdoor unit, include external piping cabinet weight and dimensions. See
Table 7 and Table 8.
7.
Select a control system. Factory-mounted, -wired, and -tested end devices, starters, VFDs, and
direct-digital, interoperable controllers are available to minimize construction cycles and jobsite coordination.
8. Contact your local Trane sales office to order an air-handling system or to ask questions.
Table 1.
Size the air handler based on airflow through the cooling coil
Coil Type Unit Size
3
4
6
8
10
12
14
1/2-inch
unit
Area (ft2)
2.92
4.51
6.11
7.99
9.98
12.30
13.65
Qty-Size
1-20 x 21
1-20 x 32.50
1-26.25 x 33.50
1-28.75 x 40
5/8-inch
unit
Area (ft2)
2.50
4.00
5.33
7.31
9.19
11.81
13.13
1-31.50 x 60
1-inch unit
2
1-28.75 x 50 1-32.50 x 54.50 1-32.5 x 60.50
Qty-Size
1-18 x 20
1-18 x 32
1-24 x 32
1-27 x 39
1-27 x 49
1-31.50 x 54
Area (ft2)
2.50
4.00
5.33
6.50
8.17
11.25
12.50
Qty-Size
1–18 × 20
1–18 × 32
1–24 × 32
1–24 × 39
1–24 × 49
1–30 × 54
1–30 × 60
1/2-inch
modified
Area (ft2)
1.74
2.78
2.78
4.95
6.38
9.38
10.42
Qty-Size
1-12.50 x 20
1-12.50 x 32
1-12.50 x 32
1-18.75 x 38
1-18.75 x 49
1-25 x 54
1-25 x 60
5/8-inch
modified
Area (ft2)
1.67
2.67
2.67
4.88
6.13
9.00
10.00
Qty-Size
1-12 x 20
1-12 x 32
1-12 x 32
1-18 x 39
1-18 x 49
1-24 x 54
1-24 x 60
1-inch
modified
Area (ft2)
1.67
2.67
2.67
4.88
6.13
9.00
10.00
Qty-Size
1-12 x 20
1-12 x 32
1-12 x 32
1-18 x 39
1-18 x 49
1-24 x 54
1-24 x 60
CLCH-PRC016-EN