Duct Connection Configuration; Rsau0025F0; Rsau0025F1; Rsau0050F1 - Trane TCCA Accompaniment To The Installation, Operation And Maintenance Manual

Duct Connection Configuration

RSAU0025F0

Each unit has two 19 in diameter discharge air
connections. Both discharge air connections have a
manual damper to control air flow. The connections were
made to accept one 20 in diameter flexible duct. These
units have a louver panel for 100% outside air operation.
Return plenums are not included but may be field
fabricated and installed by others. Field fabricated
plenums must be removed and the unit returned to the as-
shipped condition prior to their return.

RSAU0025F1

Each unit has two 19 in diameter discharge air connections
and three 19 in diameter return air connections. All of the
discharge air connections and one of the return air
connections have manual dampers to control air flow. The
connections were made to accept one 20 in diameter
flexible duct. In addition to the return duct connections,
these units have a louver panel for 100% outside air
operation that may be used instead of the return air duct
connections. A handle on the side of the unit
controls the linked dampers and allows you to choose
either 100% outside air, 100% return air, or a combination
of the two.

RSAU0050F1

Each unit has four 19 in diameter discharge air
connections and five 19 in diameter return air connections
(Figure 27). All four of the discharge air connections and
two of the return air connections have manual dampers to
control air flow. The connections were made to accept one
20 in diameter flexible duct. In addition to the return duct
connections, these units have a louver panel for 100%
outside air operation that may be used instead of the
return air duct connections. A handle on the side of the unit
(Figure 28) controls the linked dampers and allows you to
choose either 100% outside air, 100% return air, or
combination of the two.
Figure 27. RSAU0050F1 and RSAU0062F1 return air
connections
36
Figure 28. Handle to control linked dampers

RSAU0062F0

Each unit has four 19 in diameter discharge air
connections. All four discharge air connections have a
manual damper to control air flow. The connections were
made to accept one 20 in diameter flexible duct. These
units have a louver panel for 100% outside air operation.
Return plenums are not included but may be field
fabricated and installed by others. Field fabricated
(Figure 28)
plenums must be removed and the unit returned to the as-
shipped condition prior to their return.

RSAU0062F1

Each unit has four 19 in diameter discharge air
connections and five 19 in diameter return air connections
(Figure 26). All four of the discharge air connections and
two of the return air connections have manual dampers to
control air flow. The connections were made to accept one
20 in diameter flexible duct. In addition to the return duct
connections, these units have a louver panel for 100%
outside air operation that may be used instead of the
return air duct connections. A handle on the side of the unit
(Figure 28) controls the linked dampers and allows you to
choose either 100% outside air, 100% return air, or a
combination of the two.
Figure 29. Discharge Air Flex Duct Connection
Reference the Rental Services flex duct engineering bulletin,
CHS-PRB004-EN, for further information.
CHS-SVX02C-EN