Trane Climate Changer M Series - Steam Coil Piping

52 CLCH-SVX03C-EN
Coil Piping and Connections
Steam Coil Piping
M-Series air handlers fitted with steam coils have labeled holes for piping penetrations. Figure 48
and Figure 49 illustrate typical steam coil piping configurations. See Table 14 for the codes of
system components in these figures.
The coil condensate return line must be piped full size of the condensate trap connection, except
for a short nipple screwed directly into the coil header’s condensate return tapping. Do not bush
or reduce the coil return trapping size.
Figure 48. Typical piping for Type N steam coils and
horizontal tubes for horizontal airflow
Figure 49. Typical piping for Type NS steam coils and
horizontal tubes for horizontal airflow
Table 14. Code of system components for piping figures
Code System component
FT Float and thermostatic steam trap
GV Gate valve
OV Automatic two-position (ON-OFF) control valve
VB Vacuum breaker
ST Strainer
AV Automatic or manual air vent
MV Modulating control valve