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56 CAH-SVX01B-EN

Coil Piping and Connections

Steam Coil Piping

Air handlers fitted with steam coils have labeled holes for piping penetrations. Figure 52 and

Figure 53 illustrate typical steam coil piping configurations. See Tabl e 2 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 2. 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

Figure 52. Typical piping for Type N steam coils and

horizontal tubes for horizontal airflow

Figure 53. Typical piping for Type NS steam coils and

horizontal tubes for horizontal airflow

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 99 100

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Trane Performance Air Handlers Manual de Instalação Página 56