Columbia CSC SERIES Installation, Operation & Maintenance Manual page 7

Figure 5 - Primary Secondary Piping with Bypass
Figure 6 - Typical Installation Using Circulators
CONNECTING SUPPLY AND RETURN PIPING
SYSTEM
TEMPERATURE
GAUGE
SUPPLY
EXPANSION
TANK
SYSTEM
CIRCULATOR
12"
(31 cm)
FLOW
MAX.
VALVE
"A"
VALVE
PRIMARY
CIRCULATOR
"B"
VALVE
FEED
WATER
7
RETURN