Pace PAI - FIGURE 151 - Steam Coil Piping Arrangements

SECTION 3 - HANDLING, STORAGE, AND INSTALLATIONPACE │ Installation & Assembly Manual
Issue Date: 07/03/2018
92
Form PA102.20-N1
Figure 151 - Steam Coil Piping Arrangements
LD04887a
SUPPLY MAIN
DRIP TRAP
FOR END OR
LOW POINT
OF SUPPLY
MAIN
RETURN
MAIN
SUPPLY MAIN
SUPPLY
MAIN
SUPPLY MAIN
VENT TO
ATMOSPHERE
CLOSE TO
UNIT (NOT ON
VACUUM
SYSTEMS)
AIR FLOW
AIR FLOW
RETURN MAIN
RETURN MAIN
PITCHED IN CASING
STEAM COIL
STEAM COIL
PITCHED IN CASING
12" MIN.
12" MIN.
SINGLE COIL
VERTICAL AIR FLOW
12" MIN.
12" MIN.
12" MIN.
COILS IN PARALLEL AIR
FLOW MAY HAVE COMMON
SUPPLY AND SINGLE TRAP
(INDIVIDUAL COIL TRAP
PREFERRED)
COILS IN SERIES AIR FLOW
MUST HAVE INDIVIDUAL
TRAPS AND CONTROL
VALVES
RETURN MAIN
DIRT POCKET (FULL
SIZE OF COIL CONN.)
F & T TRAP
VACCUM
BREAKER
1/2" CHECK
VALVE
(OPTIONAL)
DIRT
POCKET
(FULL SIZE
OF COIL
CONN.)
VACUUM
BRAKER
1/2" CHECK
VALVE
(OPTIONAL)
SYMBOLS FOR "SS" STEAM
COIL PIPING ARRANGEMENTS
GATE VALVE
STRAINER
CONTROL VALVE
(MODULATING OR
TWO POSITION)
CHECK VALVE
FLOAT AND
THERMOSTATIC
TRAP