Install Instructions

BOILER
FF
EXPANSION
TANK
Z
ONE 1ZONE 2
V1
PV4
FIGURE 1:
PREFERRED PIPING
F
OR CIRCULATORS
ON BOILER SUPPLY LINE
ZONE 1
V
2
V
3
P
ZONE 3
ZONE 2
V
2
V
3
P
ZONE 3
V
2
V
3
P
• AIR PURGING SEQUENCE
BY ZONE
LAST
FIRST
BOILER
FF
EXPANSION
TANK
ZONE
1
ZONE
2
V1
PV4
FIGURE 2:
ALTERNATE PIPING
FOR CIRCULATORS
ON BOILER RETURN LINE
ZONE 1ZONE 2
V2V2
V3V3
PP
ZONE
3
ZONE 3
V2
V3
P
• AIR PURGING
SEQUENCE
BY ZONE
LAST
FIRST
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 LAST ZONE
FIRST (ZONE 3)
5. CLOSE FF VALVE
6. CLOSE V2, PV4
7. REPEAT STEPS 1 TO 6 FOR EACH
ADDITIONAL ZONE, PURGE ZONE 1 LAST
8. OPEN V1 WHEN ALL ZONES ARE
PURGED
9. ADJUST SYSTEM TO DESIRED
OPERATING FILL PRESSURE IF
REQUIRED
5. Fill system with tap water or maximum 50% glycol/water mix – The system must be filled before operating the circulator.
The bearings are water lubricated and should not be allowed to operate dry. Filling the system will result in immediate lubri-
cation of the bearings. It is always good practice to flush a new system of foreign matter before starting the circulator.
6. Circulator operation – Operate the circulator for 5 minutes at full speed immediately after flushing the system to purge
r
emaining air from the bearing chamber. This is especially important when installing the circulator during the off-season.
7. Turn speed dial on circulator to the desired speed and performance range. See Figure 3.