Taco 00e Series Instruction Sheet page 5

box cover. Attach a wiring connector into knockout hole. Use flexible con-
duit only. Connect Line/Hot power to the black lead, Neutral to the white
lead. See wiring diagram.
If pigtail leads provided are not used, be sure to trim field wire to a strip
length of .25" (+/- .025") to prevent exposed wire causing a short at the ter-
minal plug. Connect line and neutral to green terminal plug as shown in dia-
gram. Depress the spring tab with a small screwdriver to insert wire into plug.
Release tabs to complete connection. The VR1816 is a double insulated cir-
culator, no grounding wire is necessary. Replace terminal box cover.
When purging the system, it is recommended to run the circulator at full speed long enough to remove remaining
air from the bearing chamber. This is especially important when installing the circulator in the off-season.
To run the pump at full speed during the fast fill, start-up and purge process, rotate dial to MAX speed setting. To return to the normal
operating mode, turn dial to desired fixed speed, constant pressure, or proportional pressure setting.
The VR1816 is factory-programmed for maximum speed operating mode. If this is your desired operating mode,
no programming changes are required.
Modify the performance of the circulator as needed by rotating the dial using a flat screwdriver. A blue, orange or green LED will
illuminate when the circulator is powered on. The LED will flash each time mode is changed. See diagrams below to determine best
mode of operation for the system.The selection of the right functioning curve depends on the characteristics of the heating
system and the actual heat demand.
0
0.0 0.2
H (ft) 20
Max
18
0015 – Hi
16
008
14
0015 – Med
12
10
007
0015 – Low
8
6
006
4
Min
2
003
0
0 1 2
Fixed speed mode (
It is infinitely variable between MIN/MAX settings. See chart above for equivalent 00 model at each variable speed setting.
Disconnect AC power supply. Remove terminal
1 2
0.4 0.6
3 4 5 6 7 8
Flow
) allows the installer to fine tune the circulator flow rate to precisely match design load conditions.
NEUTRAL
LINE
3 4
0.8 1.0
LED
min -
max
Blue
9 10 11 12 13 14
WIRING DIAGRAM
WIRE NUT
WHITE
BLACK
L N
No ground wire is required.
3
Q (m /h)
Q (l/s)
1.2
H (m)
6
5
4
3
2
1
Shaded area represents full
operating range.
0
15 16 Q(gpm)
Green Terminal Plug
Spring Tabs
5