Instructions / Assembly

BOILER
FF
EXPANSION
TANK
ZONE 1
ADDITIONAL
ZONES
ZONE 1
V2
V2
V3
V3
V1
PV4
FIGURE 1 – PREFERRED
RECOMMENDED PIPING FOR
IFC CIRCULATORS
ON BOILER SUPPLY LINE
P
P
ADDITIONAL
ZONES
BOILER
FF
EXPANSION
TANK
ZONE 1
V1
PV4
FIGURE 2 – ALTERNATE
RECOMMENDED PIPING FOR
IFC CIRCULATORS
ON BOILER RETURN LINE
ZONE 1
V2V2
V3V3
PP
IMPORTANT: NOTE LOCATION
FOR PURGE VALVE. IF IFC IS
INSTALLED ON BOILER RETURN,
PV4 MUST BE ON PUMP DISCHARGE.
ADDITIONAL
ZONES
ADDITIONAL
ZONES
KEY:
VI, V2, V3 = SHUT-OFF ISOLATION VALVE
P = TACO IFC CIRCULATOR
FF = FAST FILL BOILER FEED VALVE
PV4 = PURGE VALVE
RECOMMENDED PURGING STEPS:
1. CLOSE V1, PV4, V2
2. OPEN V3
3. OPEN FF VALVE
4. OPEN V2, PV4, TO PURGE ZONE 1
5. CLOSE FF VALVE
6. CLOSE V2, PV4
7. REPEAT STEPS 1 TO 6 FOR EACH
ADDITIONAL ZONE
8. OPEN V1 WHEN ALL ZONES ARE
PURGED
9. ADJUST SYSTEM TO DESIRED
OPERATING FILL PRESSURE IF
REQUIRED