SYSTEM PIPING ARRANGEMENT
ZONING WITH ZONE VALVES
> CIRCULATOR
ON SUPPLY PIPING PUMPS
AWAY FROM EXPANSION
TANK
PIPING ARRANGED
FOR "POWER
PURGING"
AIR OUT OF SYSTEM
PIPING, REFER TO THIS
MANUAL'S
SECTION
ON "FILLING
THE SYSTEM
WITH WATER"
OPTION
#1
RETURN
FROM
S¥_TEN
SHUTOFF
VALVE
BOILER
SERVICE--
---AQUASTAT
\
FILLTROL
WITH
AIR PURGER
FILL
LINE
WiTH
SHUTOFF
VALVE"
l
SUPPLY
TO
SYSTEM
CIRCULATOR
PUNP
BALANCING
VALVE
._
ZONE VALVE
SUPPLY
TO
SYSTEM
VALVES
BOILER
DRAIN
VALVE_-