A.O. Smith XWH-1300, XWH-1700, XWH-2000, XWH-2600, XWH-3400 User Manual

Automatic Circulating Water Heaters

The ENERGY STAR® Qualiﬁed A. O. Smith high efﬁciency condensing XP

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Water Heater utilizes a state-of-the-art heat exchanger and control technology to provide large volumes of hot water for demanding commercial and industrial potable hot water applications. The all stainless steel water tube heat exchanger construction allows the XP

PLUS

Water Heater to operate in a continuous condensing mode while maximizing longevity and delivering thermal efﬁciencies as high as 99% when operating in low temperature applications.

A unique multi-burner design is control sequenced and modulated to produce turndown rates of up to 20:1. Precise temperature control and accurate load matching produce smooth system operation and eliminates wasteful short cycling and temperature overshooting.

ADVANCED MULTI-BURNER, LOW NOx COMBUSTION TECHNOLOGY

• Venturi-mixing gas/air ratio system - works with

variable speed blower to precisely mix gas and air throughout the ﬁring range.

• Fully modulating capability prevents energy-stealing

short cycling and provides smooth system operation with higher overall system efﬁciencies.

LOW NOx OPERATION

• Complies with SCAQMD Rule 1146.2 for XWH1000

through XWH2000 and Rule 1146.1 for XWH2600 and XWH3400, and other air quality management districts with similar requirements for low NOx emissions.

ADVANCED SOLA CONTROL

• Large touch screen user interface.

• Factory standard with MODBUS protocol connections.

• The latest in energy saving algorithms.

• Includes remote tank temperature control to adjust

tank temperature at the water heater – modulates the water heater to maintain tank set point temperature within +/-1 degree.

• Water heater output control features 20:1 turndown

ratio on models 2 million btuh and up, 10:1 turndown ratio on models 1.7 million btuh and down.

ALL-BRONZE FACTORY-MOUNTED PUMP(S)

• Integrally mounted, wired, and controlled by the

water heater control.

• Factory-sized for proper ﬂow between water heater

and storage tank.

• Allows 50 equivalent feet of piping between water

heater and tank.

MULTI-PASS/MULTI-BURNER CONDENSING STAINLESS STEEL HEAT EXCHANGER

• Utilizes leading-edge multi-pass water tube heat exchanger to maximize heat transfer.

• Designed for fully condensing operation throughout the heating range.

• All heating surfaces are 316L stainless steel to provide a long and trouble-free service life.

• Saves both fuel and operating cost with every heating cycle.

• Impervious to thermal shock.

DIRECT VENT FLEXIBILITY

• Direct vent up to 100 equivalent feet of pipe.

• Sidewall or vertical.

• Lower installation cost with approved CPVC/PVC venting material – uses CPVC for ﬁrst 10 feet and PVC thereafter.

• Approved for use with UL approved AL29-4C® stainless steel venting materials.

FACTORY START-UP INCLUDED

• Required for activating warranty and assuring maximum operating performance. Contact your local sales representative or Authorized Start-Up Agent to arrange a FREE certiﬁed start-up.

MEETS THE THERMAL EFFICIENCY REQUIREMENTS OF THE U. S. DEPARTMENT OF ENERGY AND CURRENT EDITION ASHRAE/IES 90.1

UP TO 96% THERMAL EFFICIENCY (AHRI CERTIFIED)

5-YEAR HEAT EXCHANGER WARRANTY

• For complete information, consult written warranty or contact A. O. Smith.

Please note: The XP These models are approved for potable water heating applications only and cannot be used in closed loop space/hydronic heating applications.

www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015

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water heater models XWH -1000 thru 3400 are certiﬁed to the ANSI Z21.10.3-CSA 4.3 water heater standard.

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Automatic Circulating Water Heaters

OTHER XP

• CSA certiﬁed to the ANSI Z21.10.3-CSA 4.3 water heater standard

• Honeywell sola control with color touch screen LCD display

• Inlet/outlet and remote tank temperature

• Onboard Modbus communications

• Logs faults, run time, cycles

• Redundant ﬂow and low water protection

• Multi-burner sequencing models 2 million

• Redundant ignition controls – should one

• Alarm buzzer

• Remote tank temperature sensor included

• 20:1 turndown ratio on models 2 million btuh and up, 10:1 turndown ratio on models 1.7 million btuh and down

• Horizontal and vertical direct and sidewall vent options up to 100 equivalent feet of piping

• Approved for CPVC/PVC plastic vent materials

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FEATURES:

display

- factory installed LWCO and ﬂow switch(s)

btuh and up have 4 burners; models 1.7 million btuh and down have 2 burners

burner fail remaining burners continue to heat

• Meets ASME CSD-1/GE gap codes – factory standard

• Direct spark ignition

• Factory-installed electrical disconnect

• All bronze factory-mounted pump(s)

• 316L stainless steel heat exchanger

• ASME 160# working pressure

• ASME rated pressure relief valve – 125 PSI

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OPTIONS:

• Condensate neutralization kit

• Vent termination kits

• Skid mounted systems

Recovery Capacities

Model

Number

XWH-1000 920,000

XWH-1300 1,300,000

XWH-1700 1,700,000

XWH-2000 2,000,000

XWH-2600 2,600,000

XWH-3400 3,400,000

BTU/HR

Natural Gas

Input

Recovery Capacities

Temperature Rise

Water Flow

°F 40 60 70 80 90 100 120 140

°C 22 33 39 44 50 56 67 78

GPH 2,662 1,775 1,521 1,331 1,183 1,065 887 761

LPH 10,078 6,719 5,759 5,039 4,479 4,031 3,359 2,880

GPH 3,742 2,495 2,139 1,871 1,663 1,497 1,247 1,069

LPH 14,167 9,444 8,095 7,083 6,296 5,667 4,722 4,048

GPH 4,904 3,269 2,802 2,452 2,180 1,962 1,635 1,401

LPH 18,565 12,376 10,608 9,282 8,251 7,426 6,188 5,304

GPH 5,794 3,862 3,311 2,897 2,575 2,317 1,931 1,655

LPH 21,931 14,621 12,532 10,966 9,747 8,773 7,310 6,266

GPH 7,501 5,000 4,286 3,750 3,334 3,000 2,500 2,143

LPH 28,393 18,929 16,225 14,196 12,619 11,357 9,464 8,112

GPH 9,891 6,594 5,652 4,945 4,396 3,956 3,297 2,826

LPH 37,441 24,961 21,395 18,721 16,641 14,976 12,480 10,697

www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015

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