-3-
F
PREFERRED PIPING FOR ZONE VALVES ON BOILER SUPPLY
PREFERRED PRIMARY / SECONDARY PIPING FOR ZONE VALVES ON BOILER SUPPLY
ALTERNATE PIPING FOR ZONE VALVES ON BOILER RETURN
igure 3:
ZONE 1 ZONE 2 ZONE 3
ZONE 1
ZONE 2
ZONE 3
ZONE 1
ZONE 2
ZONE 3
ZONE 1 ZONE 2 ZONE 3
KEY:
V1, V2,V3 = SHUT-OFF ISOLATION VALVE
P = TACO 0026e CIRCULATOR
FF = FAST FILL BOILER FEED VALVE
PV4 = PURGE VALVE
ZV = ZONE VALVE
MOD CON
BOILER
EXPANSION
TANK
EXPANSION
TANK
BOILER
EXPANSION
TANK
BOILER
Figure 3
PREFERRED PIPING FOR ZONE VALVES ON BOILER SUPPLY
ALTERNATE PIPING FOR ZONE VALVES ON BOILER RETURN
PREFERRED PRIMARY / SECONDARY PIPING FOR ZONE VALVES ON BOILER SUPPLY