ESP Zone Valve

Hydronic Accessories
ESP Zone Valve
The Taco ESP is the most intelligent zone valve in the world. The unique patented technology in the ESP utilizes a
microcircuit based logic to control a gear driven, capacitor powered actuator which drives a ball valve based body design.
All this adds up to a zone valve that leads the industry in flow rate capacity, shutoff pressure rating, ease of installation,
energy efficiency, diagnostic capability, and the number of valves (12) that can be used per standard 40 VA transformer.
H YDRONIC C OMPONENTS & S YSTEMS
©Taco Catalog # 100-7.7
Supersedes: 100-7.7 Dated: 02/1/01
Effective Date: 08/1/03
Printed in USA
The Taco ESP Zone Valve.
TM
Driven by reliability.
The ESP thinks for itself.
The heart of the ESP Zone Valve™ is
the Energy Storage Principle. The ESP
is a gear driven, capacitor powered valve.
Its unique, patented technology replaces
the typical spring with a Prostar
Capacitor for returning the valve to its
normal position. Moreover, the old style
synchronous AC motor has been
replaced with an exceptionally reliable
high torque, high efficiency miniature
motor. These Taco innovations replace
two failure items, the synchronous
motor and the spring, to deliver
dependability you never thought possible.
Inside the fashionably black box is a
microprocessor that monitors the valve’s
operations. When a thermostat calls, the
processor makes sure the capacitor is fully
charged, then sends power to the motor.
The motor turns a set of gears that rotates
the ball valve 90° to the Open position.
Once at the Open position, the motor
turns off. The LED remains lit as long as
the thermostat is calling.
Once the zone has been satisfied, the
capacitor discharges a portion of its stored
energy and the motor turns the ball valve
another 90° to the Closed position. An
on-board optical sensor continuously
ensures the proper Full Open and Full
Closed position of the ball.
Universal thermostat
compatibility.
No matter the brand or style of
thermostat hanging on the wall, the ESP
works with them all. Now you can get
all the features you want in a zone valve
and a thermostat without having to
worry about compatibility issues.
Manual operation
is a breeze.
No need to worry about stripping
gears or damaging the spring with the
ESP. With the push of a button, the
gears disengage and the valve can be
rotated in any direction, to any position.
Just release the button and the gears
re-engage. What’s more, the valve
automatically resets itself to the proper
Manual Operation Button
with Automatic Reset
LED
Indicator Light
Plug-In Terminals
Actuator Head Can Be
Mounted In Either Direction
Easy, One-Handed Removal
Blowout-proof Stem
Ball Valve Design, High Cv
125 PSI Shutoff Pressure
Sweat or Threaded
1/2”, 3/4”, and 1”
Bi-Directional Flow
3-Way Valve Option
Smart for a lot of reasons.
ball position once power is restored.
So you can’t leave the valve open by
mistake.
Let there be light.
Easy, easy, and easy.
Plug-in screw terminals make the ESP
a breeze to install and operate. The
valve can be installed in any direction,
in any orientation, and features a
dependable 1/4 turn one-handed twist
lock for easy operator removal. The
actuator head is a snap to replace, and
can be mounted to the valve body in
either direction, great for tight
baseboard jobs.
Miniature
Motor
The external LED shows you the full
functionality of the valve’s operation and
thermostat status, making it a perfect
companion to Taco’s line of electronic
zone valve controls.
Less is more.
With the ESP, there are fewer parts to
wear out, so the life of the valve is greatly
increased. Microcircuit technology lowers
the amp draw so you can install up to 12
valves per 40 VA transformer, or use a
smaller transformer. Either way, you save
on transformer costs. And because
Gear
Driven
Optical
Sensor
Reduced Parts
Application:
A Closed Systems
B Open Systems
Size:
1/2" 050
3/4" 075
1" 100
Connection:
Sweat
Thread
BSP
Inverted Flare
C
T
B
F
Valve Type:
2 2-way
3 3-way
Revision
Level
A version for
all of your needs.
The high flow, low head loss characteristics of the ESP combined with its compact
design and 125psi shutoff pressure rating
makes the ESP the most flexible valve on
the market today. No matter your
application, there is an ESP Zone Valve
to suit your needs.
End Switch
Contact
Plug-In 4 Wire Screw Terminals
or 18” Wire Leads
LED
Indicator Light
Prostar Capacitor
Valve Body Numbering System
Valve
Body
there’s no bulky synchronous motor, the
ESP has a lower profile to fit into tighter
spaces. Last, the ESP features a universal
actuator, so it fits all sizes of valves and
reduces inventory.
Actuator Numbering System
Application:
A LED
Revision
C LED*
*For use with B style
Level
valves (i.e.V075C2B1)
Valve
Actuator
Actuator Type:
Normally Closed
Normally Open
Modulating
Diverting
N
E
M
D
Voltage:
24 VAC 024
Universal UPS
Power Supply
(24-277 VAC)
Interface:
W Wire Harness
Q Quick Connect
Wiring Inputs:
2 No End Switch
3 Open, Closed, Common
4 End Switch
To order Body and Actuator as a complete assembly, drop the “A” from the Actuator. (Example:V075C2A2N024Q4A2)
Note: Certain combinations of valves and actuators may not be available. Consult Taco price sheet or a Taco sales representative for current models offered.
Quick Order Part Numbers
ESP050C2-2 > 1/2" 2-Way, Sweat, 24 VAC, Normally Closed, 4 Input Quick Connects
ESP075C2-2 > 3/4" 2-Way, Sweat, 24 VAC, Normally Closed, 4 Input Quick Connects
ESP100C2-2 > 1" 2-Way, Sweat, 24 VAC, Normally Closed, 4 Input Quick Connects
Submittal Data #101-090
Supersedes: Catalog 100-7.7 Dated: 02/1/01
Effective: 08/1/03
Product Specifications
Maximum Operating Pressure
Maximum Shutoff Pressure
Fluid Temperature Range
Service
300 PSI (2,100 kPa)
125 PSI (875 kPa)
20° to 240°F, (-7° to 115°C) @ 135°F (57°C) ambient
Closed systems
Hot and Chilled Water, up to 50% Glycol
Full Open to Full Close (90° turn), 4 seconds
Full Close to Full Open (90° turn), 6 seconds
Drop-Tight Close-Off
24 VAC, 60 HZ, 0.54 Amps
Do not exceed number of valves per transformer rating.
Example: Do not use more than 12 zone valves per 40VA transformer.
12.84 Watts, 0.54 Amps Max
1.44 Watts, 0.06 Amps Max
0.5 Amps
3 Amps @ 24 VAC
Ball Rotation Speed
Seat Leakage
Electrical Rating
Power Consumption, Charging
Power Consumption, Power On
Heat Anticipator Setting
End Switch Rating
Materials of Construction, Actuator
Body
Gears
High Performance Engineered Polymer
High Performance Internally Lubricated Engineered Polymer
Materials of Construction, Valve
Body
Stem
Press Ring
Ball
Seat
O-rings
Forged Bronze
Brass
Brass
Brass (Chrome Plated)
Modified Teflon
EPDM
A
Flow Coefficients and Maximum Close-Off Pressure
VALVE SIZE
2-WAY Cv (Kv)/Ft.
of PIPE EQUIV.*
3-WAY Cv (Kv)/Ft.
of PIPE EQUIV.*
CLOSE-OFF PSI (kPa)
1/2”
4.9 (4.3) / 9.5
1.5 (1.3) / 101
0-125 psi (0-862 kPa)
3/4”
10.3 (8.9) / 8.4
3.3 (2.1) / 82
0-125 psi (0-862 kPa)
1”
8.9 (7.7) / 47.4
3.0 (1.9) / 417
0-125 psi (0-862 kPa)
E
C
B
G
* At 4' per second (max. recommended residential flow rate).
F
Dimensions
C
VALVE SIZE
A
B
1/2”
3”
3/4”
1”
WEIGHT (valve + actuator)
E
F
G
2-WAY
3-WAY
2-9/16” 3-1/8” 1-9/16”
1.15 lbs
1.25 lbs
4-7/8”
2-5/8” 3-1/8” 1-9/16”
1.20 lbs
1.32 lbs
5”
2-5/8” 3-1/8” 1-9/16”
1.55 lbs
1.75 lbs
2-WAY
3-WAY
2-3/8”
3-9/16”
4-9/16”
3”
2-3/8”
3-3/4”
3”
2-3/8”
3-11/16”
W
A
L
L
H YDRONIC C OMPONENTS & S YSTEMS
Taco Inc., 1160 Cranston Street. Cranston, RI 02920 / (401) 942-8000 / Fax (401) 942-2360
Taco (Canada) Ltd., 6180 Ordan Drive, Mississauga, Ontario L5T 2B3 / (905) 564-9422 / Fax (905) 564-9436
www.taco-hvac.com
11⁄2" MIN.
OPERATOR
REMOVAL
CLEARANCE
ESP Zone Valve™ Wiring Diagrams
2-Way, 3-Way, Normally Open, Normally Closed
EFFECTIVE: August 1, 2003
SUPERSEDES: 102-111, dated July 1, 2002
Simplified Internal
Schematic:
Thermostats
Rh/Rc
w/y
c
Transformer
Rh/Rc
w/y
Rh/Rc
w/y
T
T
To “T” Terminals
on Boiler Control
Transformer Relay
SUPPLY
RETURN
SUPPLY
RETURN
w/y
c
End Switch
w/y
c
End Switch
w/y
c
End Switch
LED
End Switch
L1 (Hot)
L2
24 v
Capacitor
(Motor)
w/y
3-Way Installation:
Typical ESP Zone Valve Wiring:
Up to 12 Valves per
40va Transformer
MIX
Actuator’s power connections must be
over the supply port to ensure proper flow direction.
Taco ESP Zone Valves
Wiring a Taco ESP Zone Valve to Replace a
Honeywell, Erie or Sparco Valve:
MIX
Wiring a Taco ESP Zone Valve to Replace a
Flair or Taco 3-Wire Valve:
Honeywell, Erie and Sparco Wire Leads
Flair
Thermostat
Thermostat
See Chart
L1 (Hot)
L2
Motor
See Chart
L1 (Hot)
L2
4
1
2
Red
Motor Wire Color
5
Motor
3
Red
Honeywell = Yellow
Erie = Black
Sparco = Orange/Yellow
End Switch
End Switch
To “T” Terminals
To “T” Terminals
Taco 570 Series
Honeywell and Erie Terminal Block
L1 (Hot)
L2
TH
Motor
TH
TR
Thermostat
End Switch
Thermostat
L1 (Hot)
L2
ES
1
Motor
2
ES
3
TR
End Switch
To “T” Terminals
To “T” Terminals
Taco ESP Valve
Taco ESP Valve
c
w/y
L2
L1 (Hot)
c
w/y
L2
L1 (Hot)
End Switch
Thermostat
Thermostat
To “T” Terminals on Boiler
Control Transformer Relay
End Switch
To “T” Terminals on Boiler
Control Transformer Relay
Wiring a Taco ESP Zone Valve to Replace a White Rodgers Valve:
Taco ESP Valve
White-Rodgers (1311 or 1321)
To “T” Terminals
Thermostat
5
6
Motor
L2
L1 (Hot)
End Switch
6
IT
6
5
3
c
w/y
End Switch
Thermostat
4
DO
4
4
2
5
1
ONCE. DO
IT
L1 (Hot)
L2
To “T” Terminals on Boiler
Control Transformer Relay
RIGHT.™
TACO, INC., 1160 Cranston Street, Cranston, RI 02920 Telephone: (401) 942-8000 FAX: (401) 942-2360.
TACO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5T 2B3. Telephone: 905/564-9422. FAX: 905/564-9436.
Visit our web site at: http://www.taco-hvac.com
Printed in USA
Copyright 2003
TACO, Inc.