-4-
Figure 3:
Typical Installation for Zoned Hydronic Heating Systems
Boiler Supply
(Option No. 1)
Boiler Return
(Option No. 2)
Recommended Purging Steps:
Key:
1. Close V1, PV4, V2
Open V3
Open FF valve
Open V2, PV4, to purge last zone
First (Zone 3)
Close FF Valve
Close V2, PV4
Repeat steps 1 to 6 for each
additional zone, purge zone 1 last
Open V1 when all zones are purged
Adjust system to desired operating
fill pressure if required
2.
3.
4.
5.
6.
7.
8.
9.
V1, V2, V3 = Shut-off Isolation Valve
P = Taco circulator with IFC installed
FF = Fast Fill Boiler Feed Valve
PV4 = Purge Valve
