6
Installation, Operation, And Service Instructions
Supply and return and system piping should be sized by determining the pressure drop,
required flow rate and pump capacity.
WARNING
Discharge piping from relief valve must be piped to a drain or must terminate 6” above
floor to eliminate damage to the structure or personal injury. It must not be piped to a
point where freezing might occur.
1.
MULTIPLE ZOINING WITH ZONE VALVES -----
See Figure 18. Install a balancing valve in each zone and adjust so that flow is about
the same in each zone.
Figure 18.
Circulation Pump
Isolation Valves
Zone Valves
Cold Water Feed
Drain Cock
Shutoff Valves
S
R
SYSTEM PIPING
