13
1
12" max.
2
2
3
1
2
3
1
2
3
2
3
2
L
O
A
D
L
O
A
D
INSTALLATION
1
2
2
2
2
2
2
L
O
A
D
L
O
A
D
4
4
Fig. 10: Primary piping - Zoning with Circulators
Fig. 11: Primary Piping - Zoning with Zone Valve
1. Ciruclator
2. Manual shut-off valves
3. Flow check valve
4. Zone valve
Note: See page 12 for near appliance piping.
• Install balancing valves to adjust flow to distribute heat to all zones
• Size primary manifold for total flow of all ciculators
• Size each circulator to individual circuit requirements
• Install balancing valves to adjust flow to distribute heat to all zones