CCI Thermal Technologies HP - High Pressure Heat Exchanger Unit Heater - Manual (Page 6)

6
5
FIG.2
UNIT HEATER CONNECTION
FOR LOW-PRESSURE STEAM,
OPEN GRAVITY OR VACUUM
RETURN SYSTEM
NOTES:
1. For medium to high-pressure systems a bucket
or float trap must be used.
2. Do not use with fluids corrosive to steel.
3. Install using proper piping practices
4. In horizontal pipe runs, use eccentric reducers only.
5. Use a properly sized steam trap.
FIG.3
UNIT HEATER CONNECTIONS
TO OVERHEAD STEAM AND
RETURN MAINS
NOTES:
1. This piping arrangement is only for two-position-type
control. Modulating steam control may not provide
sufficient pressure to lift condensate to return main.
2. Do not use with fluids corrosive to steel.
3. Install using proper piping practices.
4. In horizontal pipe runs use eccentric reducers only.
5. Use a properly sized steam trap.
TAP INTO TOP OF MAIN
SHUT-OFF VALVE
UNION
PITCH DOWN
UNION
RETURN
MAIN
TAP INTO TOP OF MAIN
SHUT-OFF VALVE
PITCH DOWN
FULL SIZE DROP LEG
10.0 in. Min.
(254 mm)
SHUT-OFF VALVE
RETURN MAIN
PITCH
DOWN
LIFT NOT TO EXCEED 1 FT FOR
EACH POIND PRESSURE
DIFFERENCE BETWEEN STEAM
AND RETURN MAINS
THERMOSTATIC AIR
VENT OR PETCOCK.
(INSTALL IF TRAP DOES
NOT HAVE AIR VENT)
SHUT-OFF
VALVE
FLOAT AND
THERMOSTATIC
TRAP
STEAM
MAIN
UNION
UNION
UNION
UNION
SWING CHECK VALVE
STEAM TRAP WITH AIR VENT
STAINER AND DRAIN VALVE
6 in. (152mm) LONG
FULL SIZE
DIRT POCKET
STAINER
10 IN. Min.
(254 mm) FULL SIZE DROP LEG
6 in. (152mm) LONG
FULL SIZE
DIRT POCKET
UNION