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Primary Piping
Fig. 14: Primary Piping - Low Temperature Radiant System
Note: Adjust system temperature
valve to establish maximum sup-
ply/return temperature differen-
tial of 30ºF and a minimum
130ºF return water temperature
to the PERFORMANCE PLUS
1. Circulator
2. Shut Off valves
3. Flow check valve
4. Zone valve
5. Purge valve
6. System circulator
7. 3-way mixing valve
8. System Temperature valve (See note above)
Fig. 15: Primary Piping - Multi Temperature System