| AIR | 12" MAX. |
|
| |
| VENT |
|
| AIR |
|
| SCOOP |
|
| DIAPHRAGM |
|
FEED | EXPANSION |
|
TANK |
| |
VALVE PIPE PRESSURE |
| |
| RELIEF VALVE |
|
| TO DRAIN |
|
CIRCULATORS | COLD |
|
WATER
INLET
HEATING UNITS
Fig. #8999.1
MULTIPLE ZONES WITH CIRCULATORS
AIR
VENT
AIR
SCOOP
DIAPHRAGM
EXPANSION
FEED TANK
VALVE
PIPE PRESSURE
RELIEF VALVE
TO DRAIN
| COLD |
ZONE | WATER |
VALVES | INLET |
| HEATING UNITS |
Fig. #9000.1
MULTIPLE ZONES WITH ZONE VALVES
14
