Delta 40 Gas Heater User Manual


 
24
Primary Piping
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 manifold 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