Trane Climate Changer T Series Installation Operation & Maintenance page 52

Installation - Piping
Steam Coil Piping
T-Series air handlers fitted with steam coils have labeled holes for piping penetrations.
Figure 38
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 tapping size.
Table 10. Code of system components for piping figures
Code
FT
GV
OV
VB
ST
AV
MV
Figure 38. Typical piping for Type N steam coils and
horizontal tubes for horizontal airflow
GV
MV or OV
ST
GV
GV
GV
Air
flow
FT
ST
52
and Figure 39 illustrate typical steam coil piping configurations. See
System component
Float and thermostatic steam trap
Gate valve
Automatic two-position (ON-OFF) control valve
Vacuum breaker
Strainer
Automatic or manual air vent
Modulating control valve
VB
VB
12-in.
FT
min
ST
VB
FT
12-in.
min
ST
FT
12-in.
min
ST
Figure 39. Typical piping for Type NS steam coils and
horizontal tubes for horizontal airflow
12-in.
min.
ST
FT
FT
ST
Full size of
steam trap
connection
T-Series Climate Changer Air Handler IOM • CLCH-SVX06A-EN
Table 10
MV
GV
ST
VB
GV
Full size of
coil connection
VB
GV
Full
size
ST
of
main
FT
12-in.
min.