Instructions / Assembly

INSTALLATION AND OPERATION
The valve can be installed vertically or horizontally (well
above pipe center line), but never turned upside down.
Read these instructions carefully, make sure valve rating on
product label is suitable for the application.
Installer must be a trained, experienced service technician
and comply with local codes and ordinances.
A Taco Family Company
2018
LIMITED WARRANTY STATEMENT
Taco, Inc. will repair or replace without charge
(at the company’s option) any Taco product or
part which is proven defective under normal use
within one (1) year from the date of manufacture.
In order to obtain service under this warranty, it
is the responsibility of the purchaser to prompt-
ly notify the local Taco stocking distributor or
Taco in writing and promptly deliver the subject
product or part, delivery prepaid, to the stocking
distributor. 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 addi-
tion of petroleum-based uids 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 appli-
cable Taco instruction sheets or contact Taco at
(401-942-8000).
Taco reserves the right to provide replacement
products and parts which are substantially simi-
lar 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 notication.
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
DURATION 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
SPECIAL, INCIDENTAL, INDIRECT OR
CONSEQUENTIAL DAMAGES RESULTING
FROM THE USE OF ITS PRODUCTS OR ANY
INCIDENTAL COSTS OF REMOVING OR
REPLACING DEFECTIVE PRODUCTS.
This warranty gives the purchaser specic 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 war-
ranty lasts or on the exclusion of incidental or
consequential damages, so these limitations or
exclusions may not apply to you.
The valve can be installed on the supply or on the return
(preferred). The ow direction through the valve must be from
port B to port A (stamped on valve body), also indicated by the
arrow in the product label, so the paddle closes against the
direction of ow.
OPERATION OF VALVE
N.C. power OFF Port B closed
N.C. power ON Port B opened
N.C. manual open Port B opened
SWEAT COPPER CONNECTION
1. Use new, properly sized and cleaned pipe. Place the valve onto the pipe.
2. Move the manual open lever to lock at OPEN position before applying heat. This
protects the rubber seal on paddle inside by removing it from the brass seat during
soldering.
3. Sweat joints. Keep the outer surface free from solder. *DO NOT USE silver
solder due to the high melting temperature required which will cause damage to
internal parts*.
ASSEMBLY OF THE ACTUATOR TO THE VALVE BODY
1. Move the manual open lever to the lock open position.
2. Align valve stem to the mating actuator hole.
3. Move the “Actuator Release Lever” to the side and slide the actuator onto the
valve body, release the lever.
DISASSEMBLY OF THE ACTUATOR FROM THE VALVE BODY
1. Move the manual open lever to the lock open position.
2. Move the “Actuator Release Lever” to the side and pull actuator up.
MANUAL OPEN WITHOUT ELECTRIC POWER
The manual open can be achieved by pushing the manual open lever slowly and
rmly to the locked position. When power is applied, the manual open level unlocks
automatically. End switch will not be triggered (closed) when valve is manually
opened.
THERMOSTAT
MOTOR
END SWITCH
YELLOW
YELLOW
RED
TO AUX.
CIRCUIT
RED
L1 (HOT)
L2
WIRING