Smith GT-150 Installation, Operating And Maintenance Manual page 15

Figure 25 - Secondary Loop For Multiple Zones Using Pumps
Figure 26 - Secondary Loop For Multiple Zones Using A Bypass Valve
GT INSTALLATION AND OPERATION INSTRUCTIONS
Note: Velocity noise may be a problem
when the entire output of the system
pump is fl owing through the zone with
the highest pressure drop. Adjust the
differential bypass valve to eliminate
noise.
Page 15