Delta Performance PG-25 - Page 31

24
Primary Piping
1
12" max.
2
2
3
6
2
3
6
2
2
2
2
2
5
L
O
A
D
L
O
A
D
1
2
2
2
2
2
5
2
4
6
4
12" max.
L
O
A
D
L
O
A
D
Fig. 12: Primary piping - Zoning with Circulators
Fig. 13: Primary Piping - Zoning with Zone Valves
1. Appliance circulator
2. Shut-off valves
3. Flow check valve
4. Zone valve
5. System purge valve
6. System circulator
Note: See page 23 for near appliance piping.
• Install balancing valves to
adjust flow to distribute
heat to all zones
• Size primary piping for
total flow of all circula-
tors
• Size each circulator to
individual circuit require-
ments
• Install balancing valves to
adjust flow to distribute
heat to all zones