45
XvI - PIPING aND wIRING aPPENDIX
BOILER
ALTERNATE
CIRCULATOR
LOCATION
TO SYSTEM
FROM SYSTEM
CIRCULATOR
WATER INLET
SHUT-OFF
VALVE
PRESSURE
REDUCER VALVE
CHECK VALVE
BALL VALVE
AIR SEPARATOR
HOSE BIB
FLOW CONTROL
VALVE
4-WAY MIXING
VALVE
EXPANSION
TANK
BOILER
1
BOILER 1
CIRC
BOILER 2
CIRC
WATER INLET
ALTERNATE
CIRCULATOR
LOCATION
BOILER 1
TO SYSTEM
FROM SYSTEM
BOILER
2
12” MAX
ALTERNATE
CIRCULATOR
LOCATION
BOILER 2
CIRCULATOR
SHUT-OFF
VALVE
PRESSURE
REDUCER VALVE
CHECK VALVE
BALL VALVE
3 WAY MIXING
VALVE
AIR SEPARATOR
HOSE BIB
EXPANSION
TANK
12” MAX
Piping Diagram 10
Piping Diagram 11
Bypass piping (4-way valve option with circulator on supply)
Multiple Boiler Piping