12910 1 Taco 193 024Rp Brochure TAC 5682_X Pump User Manual

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User Manual: Pump 12910 1 Taco 193-024Rp Brochure

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Water Circulation
Pumps & Circulators

X-Pump Block
Open system vs closed? Barrier vs non-barrier tubing? Boiler vs water heater?
The debate ends here. The patent pending X-Pump Block combines a variable speed mixing control, heat source
circulator, system circulator, and heat exchanger into a single unit. This combination delivers complete isolation
between the heat generation side of the system (boiler, water heater, etc.) and the heat delivery side of the system
(radiant tubing, glycol based snowmelt, baseboard, etc.). Just four pipe connections and your installation is complete.

Taco Catalog # 100-39
Supersedes: NEW

Effective: 8/15/05
Printed in the USA

Submittal Data # 101-111
Supersedes: New

Submittal Data Information
X-Pump Block

Effective: 8/15/05

Application

Features

• All-in-One Heat Exchanger, Dual-sided
Circulators and Mixing Control Package
• Brazed Plate Heat Exchanger
Provides Complete Isolation
Stainless Steel
Easily Removable
Double Wall Optional
• Only 4 Pipe Connections Required
• Plug-in Low Voltage Connections
• Solid State Microprocessor Design
• Greatly Decreases Installation Time
• Substantial Space Savings
• Line Cord Included, Hard Wire Option
• Bronze Casing for Open or Closed Systems
• Replaceable Cartridge Design
• Maintenance Free, Wet-Rotor Circulators
• 2 Operation Modes: Outdoor Reset and
Setpoint with or without Delta T Limiting
• Main System Pump Contact
• 100% Pump Operation / Control Override
Switch
• Automatic Pump Exercise
• Adjustable Reset Ratio
• Warm Weather Shutdown
• Large LCD Display
• Outdoor and 2 Strap-on Sensors included

Performance Data

The X-Pump Block (XPB) is a complete mixing system with an attached brazed plate, counterflow
style heat exchanger for system isolation. Integral to the unit is a variable speed heat source circulator,
constant speed system circulator and the electronics to drive it all. The XPB can be set up to operate
as an outdoor reset control, a setpoint control or a delta T limiting control. This unparalleled flexibility
within a single unit creates a pumping and control package that can be used in systems combining any
style heat source (boiler, water heater, etc.) with any style heat delivery method or system condition
(radiant tubing, glycol based snowmelt, open system, etc.). With just 4 piping connections needed, the
XPB greatly reduces the time and space required for installation.
Outdoor
Sensor

Outdoor
Sensor
Return
Sensor

HEAT
SOURCE

Boiler
Sensor

Input From
Heat Source

Output
to System

Pressure
Relief

HEAT
SOURCE

Supply
Sensor

Exp
Tank

Output to
System

Input from
Heat Source

Supply
Sensor

X - Pump Block (XPB)

Conventional Heat Exchanger Piping

The features of the X-Pump Block makes it easy and cost effective to include a hydronic based radiant
floor warming system in any kitchen and bath remodel project, especially in homes which have an air based
heating system. The XPB also makes the perfect companion for basement “radiant ready” packages, jobs
where space is at a premium, and small snowmelt areas such as handicap accessible building entrances.

Operation

Hot water from the heat source, such as a boiler, enters the X-Pump Block’s integral heat exchanger
at port (A1) and exists at (A2). The variable speed circulator controls the speed of the water flowing
through the A side of the heat exchanger to satisfy the heat transfer requirements between the A side
of the heat exchanger and the B (system) side. The heat exchanger is a counterflow style, so system
water enters at port (B1) and exits at port (B2). A constant speed
B1
circulator moves the water around the B (system) side. In
A2
certain applications, such as snowmelt, the system pump motor
B2 can be switched with the variable speed motor in order to
protect the heat exchanger from freezing up by ensuring
A1
constant flow on the heat source side.

Sizing and Piping

Flow Range: 0 – 7.5 GPM
Head Range: 0 – 15.5 Feet
Minimum Fluid Temperature: 32˚F (0˚C)
Maximum Fluid Temperature: 185°F (85˚C)
Maximum Working Pressure: 125 psi
Connection Sizes: 3/4” NPT
FOR INDOOR USE ONLY

The X-Pump Block can handle transfer loads of up to approximately
50,000 BTU. Your current method of piping virtually remains the
same; yet complete system isolation is achieved. The only addition
needs to be a separate expansion tank and relief valve on the system
side. 1 outdoor sensor, 2 strap-on sensors and a line cord are
included for fast plug n’ play wiring.
Outdoor
Sensor

Performance Field

Return
Sensor

Outdoor
Sensor

Return
Sensor

Pressure
Relief

Pressure
Relief

M

M

18

HEAT
SOURCE Input from

16
14

System Side
Circulator

12
HEAD (ft)

Heat Source

Exp
Tank

HEAT
SOURCE

Supply
Output to Sensor
System

X - Pump Block (XPB), Multiple Zones - Circulators

Input from
Heat Source

Exp
Tank
Supply
Output to Sensor
System

X - Pump Block (XPB), Multiple Zones - Zone Valves

10

Electrical & Weight Data

8
6

Model Volts Hz Ph Amps RPM

Heat Source
Side Circulator

4

XPB-1

2
0
0

2

4

6
FL OW ( gpm)

8

10

Motor
Type

120

60

1

2

3250

HP

Ship Wt.

2 @ 1/25 lbs. Kg

Permanent Split Capacitor
Impedance Protected

26.5

12.0

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



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