CLCH-SVX03C-EN
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Component Installation Requirements
Component Installation Requirements
The components in the air handler may have installation requirements that could affect the unit’s
performance.
Diffuser Modules
Diffuser modules are usually placed between a fan and a downstream coil or filter. Because
placement is critical to unit performance, verify the correct placement of the diffuser module before
assembling the unit (see
Figure 25
and
Figure 26
).
Filter Modules
Bag and cartridge filter modules can be used as a pre-filter module, a final filter module, or both.
This use is determined by the filter’s placement in relation to the fan.
•
A final filter module is placed after the fan.
•
A pre-filter module is placed before the fan.
Note:
Cartridge and bag filters provided by Trane are fitted with a 7/8-inch header that fits in the
filter track. If using filters supplied by another manufacturer, filters should be purchased
with a 7/8-inch header. In some cases it may be necessary to gasket other manufacturers’
filters to ensure a good air seal.
Filters should be installed when the unit is set. This will protect internal components, such as the
heating and cooling coils.
Final Filter Module
A final filter module should not be bolted directly to the face of a fan module. One or more
intermediate modules must be placed between the fan discharge and the filter module.
Pre-Filter Module
A pre-filter module has no special installation requirements unless placed directly upstream of a
plenum fan. In these configurations, ensure a blank module is placed between the fan inlet and the
filter module.
Trane recommends the use of disposable pre-filters with high-efficiency filters. Disposable pre-
filters slide into the mounting tracks just ahead of the bag/cartridge filters.
Figure 25. Diffuser placement sizes 3 to 57
Figure 26. Diffuser placement sizes 66 to 120
Airflow
Airflow