Taco 00e Series User manual

102-499
SUPERSEDES: May 19, 2021 EFFECTIVE: August 16, 2021
Plant ID No. 001-4230
The 00e series VR1816 circulator is an infinitely variable speed wet rotor circulator with an ECM,
permanent magnet motor. Operating modes include infinitely adjustable fixed speed or self-adjust-
ing proportional or constant pressure variable speed. Its high efficiency motor reduces power
consumption by up to 85% compared to equivalent AC permanent split capacitor circulators.
• Maximum operating pressure: 125 psi (8.6 bar)
• Maximum water temperature: 230°F (110ºC)
• Electrical specifications:
Voltage: 110-120V, 50/60 Hz, single phase
Maximum operating power: 44W
Maximum amp rating: 0.54
• Equipped with a cast iron casing and should be used for closed loop systems only
•Not suitable for open loop potable water or chilled water systems
•Taco circulator pumps are for indoor use only – employer uniquement a l’interieur
• Acceptable for use with water or maximum of 50% water/glycol solution
• 3 operating modes:
- Fixed speed ( ) - infinitely adjustable MIN/MAX settings
- Constant pressure (), variable speed - 3 constant pressure differential curves
(5, 10, or 15 maximum feet of head)
- Proportional pressure ( ), variable speed - 3 variable pressure differential curves
(High, Med, or Low)
•Multi-color LED display showing operating mode and error code diagnostics
•Use with a Taco ZVC Zone Valve Control or SR Switching Relay for ON/OFF operation
•Nut capture feature on flanges for easier fit up
•Dual electrical knockouts and 6” stranded wire leads for easy wiring
•Double insulated - no ground-wire required
•Whisper quiet operation
•BIO Barrier®protects the pump from system contaminants
•®- automatic unblocking and air purging mode
•Optional 2-way flange model for easy fit-up to any flange orientation
•Integral Flow Check (IFC®) included - Field installed
Standard flange model:
VR1816-HY2-FC2A00
Optional 2-way flange model:
VR1816-HY2-4C2A00
WARNING: Do not use in swimming pool or spa areas. Pump has not been investigated for these applications.
AVERTISSEMENT: Ne pas utiliser dans une piscine ou un spa. La pompe n'a pas été étudiée pour ces applications.
CAUTION: The addition of petroleum based fluids or certain chemical additives to systems using TACO equipment voids the warranty.
Consult factory for fluid compatibility.
ATTENTION: L'ajout de liquides à base de pétrole ou de certains additifs chimiques à des systèmes utilisant un équipement
TACO annule la garantie. Consultez le fabricant pour connaître la compatibilité de liquides.
CAUTION: Installations at elevations over 5000 feet must have higher fill pressure of 20 psi minimum to prevent pump cavitation
and flashing. Premature failure may result. Adjust expansion tank pressure to equal fill pressure. A larger size expansion tank
may be required.
ATTENTION: Des installations à des altitudes de plus de 1600 mètres doivent présenter une pression de remplissage plus élevée
de 20psi au minimum afin d'éviter toute cavitation ou flashing de la pompe. Une défaillance prématurée peut en résulter. Réglez la
pression du réservoir d'expansion de façon qu'elle soit égale à la pression de remplissage. Un réservoir d'expansion d'une taille
supérieure peut être nécessaire.

2
KEY:
VI, V2, V3 = SHUT-OFF ISOLATION VALVE
P = TACO CIRCULATOR WITH IFC
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
Figure 2:
PREFERRED PIPING
FOR CIRCULATORS
ON BOILER SUPPLY
ALTERNATE PIPING
FOR CIRCULATORS
ON BOILER RETURN
LAST
AIR PURGING
SEQUENCE
BY ZONE
FIRST
LAST
AIR PURGING
SEQUENCE
BY ZONE
FIRST
V3 V3 V3
3
V3 V3 V3
ZONE 1 ZONE 2 ZONE 3
ZONE 3 ZONE 2 ZONE 1
ZONE
3
ZONE
2
ZONE
1

3
KEY:
VI, V2, V3 = SHUT-OFF ISOLATION VALVE
P = TACO CIRCULATOR WITHOUT IFC INSTALLED
FF = FAST FILL BOILER FEED VALVE
PV4 = PURGE VALVE
ZV = ZONE VALVE
RECOMMENDED PURGING STEPS:
1. CLOSE V1, PV4, V2
2. OPEN V3 AND ZV3
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
10. MOVE ALL ZV TO CLOSED/AUTOMATIC
POSITION
Figure 3:
PREFERRED PIPING
FOR ZONE VALVES
ON BOILER SUPPLY
ALTERNATE PIPING
FOR ZONE VALVES
ON BOILER RETURN
LAST
AIR PURGING SEQUENCE BY ZONE
FIRST
ZONE 1 ZONE 2 ZONE 3
LAST
AIR PURGING
SEQUENCE
BY ZONE
FIRST
ZONE 1 ZONE 2 ZONE 3
V3 V3 V3
V3 V3 V3
ZV3
ZV3
ZONE 3 ZONE 2 ZONE 1
ZONE
3
ZONE
2
ZONE
1

4
The circulator can be installed on the supply or return side of the boiler but for best system performance, it should always
pump away from the expansion tank. See piping diagrams in Figure 2 and Figure 3.
Circulator must be mounted with the motor in the horizontal position. See diagrams below for acceptable motor
mounting orientations.
Fill the system with tap water or a maximum of 50% propylene-glycol and water solution 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 lubrication of the bearings. It is always good practice to flush a new system of foreign matter before starting
the circulator.
Always install with motor in horizontal orientation.
Position electrical junction box at 9 o’clock for best
viewing orientation. Pump casing may be rotated to
change flow direction. Locate the arrow on the cas-
ing body to determine flow direction.
Across a Series
Loop System Using
Zone Valves
Across Multi-Zone
Radiant Manifolds
with Loop Actuators
M M M M
• Zone Valves
• Panel Radiation with
Thermostatic Valves
• Radiant Loops with
Actuators
-Varies speed to
maintain proportional
or constant pressure
differential (∆P)
Integral Flow Check (IFC®) option - An IFC® is included in the carton. If required, press IFC into machined discharge port with plunger
and o-ring facing in, until it snaps into place. Before installing, press IFC plunger to be sure it moves freely. See diagram above.
To rotate the pump casing, remove the 4 motor screws.
Damage to the casing O-ring and leakage may result.Simply spin casing to the
proper flow direction desired as shown in Figure 4 and Figure 5. Reattach the 4 screws (1⁄8" allens wrench
required). Be sure motor is positioned correctly and is seated evenly to prevent leakage or damage to O-ring.
Tighten motor screws evenly to in-lbs torque.
Spin
casing
to
change
flow
direction.
Spin casing
to change
flow direction.
Do not detach motor frame from pump
casing. Simply spin casing to the
proper flow direction.
X
CAUTION: Do not use flat rubber gaskets. Only use O-ring gaskets provided or leaks may result. Warranty will be void.
WARNING: Disconnect power when servicing. CAUTION: Use flexible conduit only. Not for use with rigid conduit.
WARNING: SERVICING OF DOUBLE-INSULATED APPLIANCES. A double-insulated appliance is marked with one or more of the following:
The words “DOUBLE INSULATION” or “DOUBLE INSULATED” or the double insulation symbol (square within a square). In a double-
insulated appliance, two systems of insulation are provided instead of grounding. No grounding means is provided on a double-insulated
appliance, nor should a means for grounding be added. Servicing a double-insulated appliance requires extreme care and knowledge
of the system, and should be done by qualified service personnel. Replacement parts for a double-insulated appliance must be identical
to the parts they replace.

5
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.
Min
Max
Q(gpm)
012345678910111213141516
H (ft)
0
2
4
6
8
10
12
14
16
18
20
Q (l/s)
0.00.2 0.40.6 0.81.0 1.2
H (m)
0
1
2
3
4
5
6
Q (m3/h)
43210
0015 – Hi
008
0015 – Med
007
0015 – Low
006
003
Flow
Head in Feet
Fixed speed mode ( ) allows the installer to fine tune the circulator flow rate to precisely match design load conditions.
It is infinitely variable between MIN/MAX settings. See chart above for equivalent 00 model at each variable speed setting.
Shaded area represents full
operating range.
Blue
LED
min -
max
Disconnect AC power supply. Remove terminal
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.
NEUTRAL
WIRING DIAGRAM
LN
No ground wire is required.
Green Terminal Plug
Spring Tabs
WIRE NUT
WHITE
BLACK
LINE

6
15
10
5
Q(gpm)
0 1 2345 6 7 8 9 10 11 12 13 14 15 16
H (ft)
0
2
4
6
8
10
12
14
16
18
Q (l/s)
0.0 0.2 0.4 0.6 0.8 1.0 1.2
H (m)
0
1
2
3
4
5
6
Q (m3/h)
4
3
2
10
008
0015 – Med
007
0015 – Low
006
Flow
Head in Feet
In Constant pressure mode ( ), the circulator maintains a constant pressure differential (∆p-c) in the system as heating load
increases or decreases. Selection options are 5, 10, or 15 feet of head maximum constant pressure. See chart above for equiv-
alent 00 model at each setting.
Low
Med
High
Q(gpm)
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
H (ft)
0
2
4
6
8
10
12
14
16
18
Q (l/s)
0.0 0.2 0.4 0.6 0.8 1.0 1.2
H (m)
0
1
2
3
4
5
6
Q (m3/h)
43210
Flow
Head in Feet
In Proportional pressure mode ( ), the circulator maintains a proportional pressure differential (∆p-v) as heating load increases
or decreases. Flow will change in relationship to the change in pressure differential. Selection options are Low, Medium, or High.
If unsure on proper setting, select Medium and adjust as needed.
Orange
LED
Green
LED

7
Listed below are potential diagnostic error codes which will appear on the LED display in case
of a malfunction.
FAULTS CONTROL
PANELCAUSES REMEDIES
The circulator is
noisy
LED on Suction pressure is
insufficient - cavitation
Increase the system suction
pressure within the
permissible range.
LED on Presence of foreign bodies
in the impeller
Disassemble the motor and
clean the impeller.
Loud noises of
water circulation
Flashing white
LEDAir in the system Vent the system. Repeat
fill and purge steps.
LED on The flow is too high Reduce the pump speed.
Circulator is not
running although
the electrical
power supply is
switched on
LED off
Lack of power supply
Verify voltage value of the
electric plant.
Verify the connection of the
motor.
One fuse in the installation
is blownVerify the fuses of the plant.
The circulator is defective Replace the pump.
Overheating
Let the pump cool down for
some minutes. Then try to re-
start it. Verify that the water
and ambient temperature are
within the indicated
temperature ranges.
LED red The rotor is blocked
Disassemble the motor and
clean the impeller. See
unblocking procedure below.
Insufficient supply voltage
Verify that the power supply
matches the data on the name
plate.
Building does not
get warm. LED on The circulator
performance is too low
Increase the suction head.
Increase speed or ∆P setting.
A red light in the LED indicates the circulator rotor is blocked or sticking. Turn the selector to the position MAX, disconnect and
connect power supply to start the automatic release process. The circulator makes 100 attempts to restart (process lasts approx-
imately 15 minutes). Every restart is signalled by a short flash of white LED light. If the blocking is not removed through the auto-
matic release process after 100 attempts to restart, the circulator goes into standby and the LED remains solid red. Perform the
manual unblocking steps described below.
1. Disconnect power supply - the warning light switches off.
2. Close both isolating valves and allow cooling. If there are no shut-off devices, drain the system so that the fluid level is
beneath that of the circulator.
3. Loosen 4 motor bolts. Remove motor from casing. Carefully pull the rotor/impeller from the motor.
4. Remove impurities and deposits from the impeller and casing.
5. Reinsert the rotor/impeller into the motor.
6. Set the dial to the MAX position.
7. Connect power supply. Check for impeller rotation.
8. If the circulator still doesn’t run it will need to be replaced.

Taco, Inc. will repair or replace without charge (at
the company’s option) any Ta co High Efficiency
circulator or circulator part which is proven defec-
tive under normal use within three (3) years from
the date of manufacture.
In order to obtain service under this warranty, it
is the responsibility of the purchaser to promptly
notify the local Taco stocking distributor or Taco
in writing and promptly deliver the subject product
or part, delivery prepaid, to the stocking distribu-
tor. For assistance on warranty returns, the pur-
chaser may either contact the local Taco stock-
ing distributor or Taco. If the subject product or
part contains no defect as covered in this war-
ranty, the purchaser will be billed for parts and
labor charges in effect at time of factory exami-
nation and repair.
Any Taco product or part not installed or operated
in conformity with Taco instructions or which has
been subject to misuse, misapplication, the addi-
tion of petroleum-based fluids or certain chemi-
cal additives to the systems, or other abuse, will
not be covered by this warranty.
If in doubt as to whether a particular substance
is suitable for use with a Taco product or part, or
for any application restrictions, consult the
applicable Taco instruction sheets or contact
Taco at (401-942-8000).
Taco reserves the right to provide replacement
products and parts which are substantially similar
in design and functionally equivalent to the
defective product or part. Taco reserves the right
to make changes in details of design, construc-
tion, or arrangement of materials of its products
without notification.
This warranty gives the purchaser specific rights,
and the purchaser may have other rights which
vary from state to state. Some states do not
allow limitations on how long an implied warranty
lasts or on the exclusion of incidental or conse-
quential damages, so these limitations or exclu-
sions may not apply to you.
Minimum 003
006
-
Alpha 15-55 (Low) --
Eco-Vario (Low) Compass (1)
Medium
007
008
0015 (Low)
0015 (Med)
UP-15-42
UPS-15-58 (Low)
UPS-15-58 (Med)
Alpha 15-55 (Med)
Star S-21 (1)
Star S-21 (2)
NRF-25 (1)
NRF-25 (2)
Eco-Vario (Med)
Astro 230 (1)
Astro 230 (2)
Compass (2)
Maximum 0015 (Hi) UPS-15-58 (Hi)
Alpha 15-55 (Hi) Star S-21 (3) NRF-25 (3)
Eco-Vario (Hi)
Astro 230 (3)
Compass (3)
VR1816 Alpha 15-55 Stratos Eco Eco-Auto Compass 20-20
198-213 RP Casing O-ring
198-214 RP Wiring plug connector (green)
198-215 RP Terminal box cover (black)
198-217 RP Terminal box cover screws (5 per bag)
0010-025 RP Integral Flow Check (IFC®)
007-007 RP Flange gasket set
2021