UTICA BOILERS STARFIRE IV STEAM 4 Series Installation, Operation & Maintenance Manual page 11

SUGGESTED PIPING FOR MODULAR STEAM BOILERS - PUMPED RETURN
Figure #9
F & T TRAP HIGH
LEVEL "SPILL"
(DO NOT USE WITH
CONDENSATE PUMP)
CHECK
VALVE
FROM
RECEIVER
TANK
Figure #10
SUGGESTED PIPING FOR MODULAR STEAM BOILERS - GRAVITY RETURN
CHECK
VALVE
(OPTIONAL)
SUPPLY AND RETURN PIPING
PUMPED RETURN
STOP
VALVE
TO
RECEIVER
TANK
STOP
VALVE
SOLENOID
VALVE
(OPTIONAL)
FROM
RECEIVER
TANK
GRAVITY RETURN
STOP
VALVE
2"
STOP
VALVE
BLOWOFF
VALVE
28"
BLOWOFF
VALVE
11
TO
SYSTEM
TRAP
TO
RECEIVER
TANK
WATER
LINE