Trane BCHE - Piping and Connections; Water Coil Piping; Refrigerant Coil Piping

BCX-SVX002A-EN
55
Water Coil Piping
Water coils are self-venting only if the water velocity
exceeds the minimum required velocity.
The following combinations of unit size and number of rows
have a coil with a minimum self-venting velocity of 1 feet
per second (fps).
Unit Size # Rows
18 8
36
6,8
Unit Size # Rows
54
4,6,8
72
2,4,6,8
90
2,4,6,8
120
2,4,6,8
All other unit size and coil combinations have a minimum
self-venting velocity of 1.5 feet per second (fps).
Figure 47. Typical piping for one-row water coil
GV
GV
GV
AV
AV
Water supply
main
Water
return main
Drain
Level
Airflow
Refrigerant Coil Piping
Note: Refer to for information on handling refrigerants.
The following figure illustrates an example of a split-system
component arrangement. Use it to determine the proper,
relative sequence of the components in the refrigerant lines
that connect the condensing unit to an evaporator coil.
Piping and Connections