
29
8
9
10
12
11
14
12
11
1
3
2
1
3
4
5
6
7
6
TYPICAL PIPING DIAGRAM ON 30RA UNITS WITH HYDRONIC PACKAGE
LEGEND
1 —
Strainer/Blow-Down Valve
2 —
Expansion Tank
3 —
Pump
4 —
Electric Heater
5 —
Air Vent Connection Port
6 —
Pressure Gages/Petcocks
7 —
Heat Exchanger
8 —
Flow Switch
9 —
Balance Valve/Drain Plug
10 —
Pressure Relief
11 —
Isolation Valves
12 —
Flex Connections
13 —
Pressure Reducing/Fill Valve
14 —
Air Separator and Vent
---
Factory Supplied