-2-
Figure 2:
KEY:
V1, V2,V3 = SHUT-OFF ISOLATION VALVE
P = TACO 0026e CIRCULATOR
FF = FAST FILL BOILER FEED VALVE
PV4 = PURGE VALVE
FC = FLOW CHECK VALVE
MOD CON
BOILER
ZONE 1
ZONE 2
ZONE 3
ZONE 1
ZONE 2
ZONE 3
ZONE 1 ZONE 2 ZONE 3
FC
FC
FC
FC
FC
FC
FC
FC
FC
ZONE 1
ZONE 2
ZONE 3
ZONE 1
ZONE 2
ZONE 3
FC
FC - Optional Location
FC
FC
ZONE 1
ZONE 2
ZONE 3
FC
FC - Optional Location
FC
FC
V3
V3
V3
V2
V2
V2
P
P
P
EXPANSION
TANK
V1
V1
PV4
P
EXPANSION
TANK
BOILER
EXPANSION
TANK
BOILER
V3
V2
P
V3
V2
P
V3
V2
P
V3
V2
P
V3
V2
P
V3
V2
P
V1
PV4
V1
Figure 2
PREFERRED PIPING FOR CIRCULATORS ON BOILER SUPPLY
PREFERRED PIPING FOR CIRCULATORS ON BOILER RETURN
PREFERRED PRIMARY / SECONDARY PIPING FOR CIRCULATORS ON BOILER SUPPLY
