Taco 001-3914 User manual

APPLICATION:
The Taco Wood Boiler Series Hi-Capacity circulators are
designed specifically for use on unpressurized outdoor
wood boiler applications. Features include a quiet running,
close-coupled, thermally protected motor assembly with
permanent split-capacitor and permanently lubricated
bearings. A stainless steel shaft, silicon-carbide mechanical
seal and non-ferrous impeller make the Wood Boiler Series
Circulator an ideal choice for years of maintenance-free
operation.
Note: Use Stainless Steel body circulators on open
systems for the best corrosion protection.
OPERATING SPECIFICATIONS:
•Maximum Working Pressure: 150 psi (1034 kPa)
•Maximum Operating Temperature: 225ºF (107ºC)
•Electrical Rating: 115V/60Hz/1Ph
REMOVAL OF EXISTING PUMP FROM SYSTEM PIPING:
1. Disconnect and lock-out electrical supply to pump.
2. Close isolation valves on suction and discharge sides
of pump. If valves are not installed, the system may
need to be drained.
3. Remove capacitor box cover and disconnect electrical
supply lines to pump.
4. Loosen flange bolts and shift pump body slightly to
relieve any remaining system pressure.
5. Remove flange nuts/bolts and pump from system.
INSTALLATION OF WOOD BOILER SERIES
CIRCULATOR:
A. Location:
• Install pump with sufficient room for future inspection,
maintenance and service.
• It is recommended that isolation valves be installed on
the pump suction and discharge to simplify future ser-
vice or replacement without draining the system.
• Install pump at location with highest net positive suc-
tion head available (NPSHA), usually at the boiler supply
outlet.
Instruction Sheet
Outdoor Wood Boiler Series Hi-Capacity Circulator
102-349
SUPERSEDES: November 10, 2009 EFFECTIVE: May 1, 2010
Plant ID# 001-3914
INSTALLER: Please leave these instructions for
owner’s use.
CAUTION: Taco Wood Boiler circulators are
designed for indoor use only. Be sure boiler
enclosure is weather tight if installed on the
boiler.
CAUTION: This pump has a mechanical seal
which may require service. Allow access for
periodic inspection and leak detection.
Provide adequate drainage to prevent prop-
erty damage.
CAUTION: To prevent injury, allow system
water to cool to 100ºF before removing old
pump or draining system. Leave drain valve
open until service/replacement is complete.
WARNING: Do not use in swimming pool or spa
areas; pump has not been investigated for this
application.
WARNING: To avoid electrical shock, disconnect the
power supply to the circulator and the main electri-
cal unit.
CAUTION: When installing electrical connections,
do not apply mechanical loads to the capacitor
box; otherwise, retaining screws may be pulled out
of the housing, making circulator unusable.
CAUTION:
1. The addition of petroleum based fluids or cer-
tain chemical additives to systems utilizing TACO
equipment voids the warranty.
2. Use supply wires suitable for 90°C – ATTEN-
TION: Employer des fils d´alimentation adequats
pour 90°C.
CAUTION: Installations at higher 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.

1. Using teflon tape or high quality thread sealant, install
Taco companion flanges on threaded pipe ends to
ensure proper fit-up and leak protection.
2. Minimize pipe strain on pump by using pipe hangers
on the suction and discharge lines.
3. Position vertical and horizontal piping so bolt-holes on
pump and companion flanges match. Do not force the
suction and discharge lines into position. This may cre-
ate excess stress on the pump casing and flanges.
B. Mounting Position:
• Always install pump with the motor shaft in the hori-
zontal position and the capacitor/conduit box oriented
on top of the motor housing, as shown in Fig. 1.
• Standard pump body mounting position is with the flow
in the up-discharge direction (body position #3). The
pump body may be field-rotated in any direction to
accommodate system piping and flow direction.
• Be sure to align the arrow on the casing with desired
flow direction.
C. Electrical Wiring:
• All electrical wiring must be installed by a licensed
electrician in accordance with local and national codes
and regulations.
• Electrical supply and grounding wires must be suitable
for at least 90ºC (194ºF).
• Wood Boiler Series circulators are thermally protected
and do not require external overload protection.
1. Be sure all electrical power to pump is disconnected
and locked-out before proceeding with wiring.
2. Loosen capacitor/conduit box screw and remove cover.
3. Attach appropriate size connector to one of the two
knock-out holes in the capacitor/conduit box.
4. Using minimum 18 AWG wire, connect the hot and
neutral leads from the electrical supply to the respec-
tive black and white leads in the capacitor box.
5. Connect the ground wire to the green ground screw in
the capacitor box.
6. Replace capacitor/conduit box cover.
7. Insert plastic plug provided in unused knock-out hole.
FLOW
NOT RECOMMENDED
RECOMMENDED
FLOW FLOW
FLOW
CAUTION: Do not support, suspend or brace
pump motor or early failure may result.
Support provided by casing is sufficient for
structural integrity of pump
Fig. 1 – Installation Positions
CONNECTION 3⁄4"1"11⁄4"11⁄2"
Iron NPT 110-251F 110-252F 110-253F 110-254F
Stainless
Steel NPT 110-251SF 110-252SF 110-253SF 110-254SF
Bronze SWT 110-523BSF 110-524BSF 110-525BSF 110-526BSF
Shut-Off NPT SF-075T SF-100T SF-125T SF-150T
Shut-Off SWT SF-075S SF-100S SF-125S SF-150S
WOOD BOILER SERIES COMPANION FLANGE SETS

SYSTEM START-UP:
1. Prior to pump start-up, the system should be thor-
oughly cleaned, flushed and drained to prevent dam-
age to seal surfaces.
2. Open isolation valves and re-fill system with clean water.
Check for any leaks.
3. Vent all air from system at an air vent located at the
high point in the system.
4. Start circulator to check for proper operation.
PERIODIC INSPECTION, MAINTENANCE:
Taco Wood Boiler Series Hi-Capacity circulators are
designed to provide years of trouble-free service. However,
periodic inspection and routine maintenance is recom-
mended for all hydronic systems and mechanical equip-
ment. If any evidence of leakage or damage is present,
take preventive steps to repair or replace the circulator
immediately.
REPLACING THE MECHANICAL SEAL: Refer to Fig. 2
on back page.
1. Follow steps 1 thru 5 in section “Removal of existing
pump from system piping”.
2. Loosen the four body bolts that attach the motor hous-
ing to the casing. While supporting the motor, remove
the four bolts and carefully remove the motor and
impeller assembly from the casing.
3. To remove the impeller, first insert a screwdriver into
the motor ventilation slots to make contact with one of
the rotor cooling fins. While holding the rotor in place
with the screwdriver, turn the impeller clockwise to
loosen and remove from shaft.
4. Remove the seal assembly from the shaft.
5. Remove the face plate from the motor housing. To
remove face plate, gently pry it away from the housing.
6. Remove the old seal seat and cup. Lubricate the new
cup with soapy water and install new parts in the face
plate recess. Replace the face plate to its original posi-
tion. Carefully tap the face plate evenly into the recess
in the motor housing.
7. Clean the impeller shaft before installing the new seal.
8. Lubricate the impeller shaft with soapy water. Do not
install new seal on a dry impeller shaft or damage to
seal may result.
9. Slide the new carbon seal and spring assembly onto
the shaft until it contacts the silicon-carbide seal seat.
10. While holding the rotor in place as in Step 3, thread the
impeller onto the shaft in a counter-clockwise direction
until it stops. Check to make sure the pump will rotate.
If the impeller will not spin freely, contact Taco
Technical Support at 1-401-942-8000.
11. Remove old body gasket, clean the recess in the pump
casing and install the new body gasket provided.
12. Attach the pump casing to the motor housing and
secure with the four body bolts. Be sure flow arrow is
pointing in proper direction. Tighten the four bolts
evenly in a criss-cross pattern to 65 in-lb of torque.
There should be a small, even gap between the casing
and the motor mounting bracket.
13. Re-install circulator into system using new flange
gaskets. Refer to section “Installation of Wood Boiler
Series Circulator” for complete mounting and wiring
instructions.
CAUTION: Do not start the pump until the sys-
tem has been completely filled and vented.
Running the pump dry may damage the
mechanical seal and void warranty.
CAUTION: Do not allow screwdriver to make
contact with motor windings or insulation.
Permanent damage to motor may result.
CAUTION: Do not allow screwdriver to make
contact with motor windings or insulation.
Permanent damage to motor may result.

Fig. 2: Exploded View of Pump
LIMITED WARRANTY STATEMENT
Taco, Inc. will repair or replace without charge
(at the company’s option) any Taco circulator or
circulator part which is proven defective 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 distrib-
utor. For assistance on warranty returns, the
purchaser may either contact the local Taco
stocking distributor or Taco. If the subject prod-
uct or part contains no defect as covered in this
warranty, the purchaser will be billed for parts
and labor charges in effect at time of factory
examination 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
addition of petroleum-based fluids or certain
chemical 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.
TACO OFFERS THIS WARRANTY IN LIEU OF
ALL OTHER EXPRESS WARRANTIES. ANY
WARRANTY IMPLIED BY LAW INCLUDING
WARRANTIES OF MERCHANTABILITY OR
FITNESS IS IN EFFECT ONLY FOR THE DURA-
TION OF THE EXPRESS WARRANTY SET
FORTH IN THE FIRST PARAGRAPH ABOVE.
THE ABOVE WARRANTIES ARE IN LIEU OF
ALL OTHER WARRANTIES, EXPRESS OR
STATUTORY, OR ANY OTHER WARRANTY
OBLIGATION ON THE PART OF TACO.
TACO WILL NOT BE LIABLE FOR ANY SPE-
CIAL, INCIDENTAL, INDIRECT OR CONSE-
QUENTIAL DAMAGES RESULTING FROM THE
USE OF ITS PRODUCTS OR ANY INCIDENTAL
COSTS OF REMOVING OR REPLACING
DEFECTIVE PRODUCTS.
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 consequential damages, so these limitations
or exclusions may not apply to you.
COMFORT MADE EASY®
TACO, INC., 1160 Cranston Street, Cranston, RI 02920 Telephone: [phone] FAX: [phone].
TACO (Canada), Ltd., 8450 Lawson Road, Unit #3, Milton, Ontario L9T 0J8. Telephone: [phone]. FAX: [phone].
Visit our web site at: http://www.taco-hvac.com
Printed in USA
Copyright 2010
TACO, Inc.