Automatic Circulating
Water Heaters
The ENERGY STAR® Qualified A. O. Smith high efficiency condensing XP PLUS 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 XPPLUS water heater models XWH -1000 thru 3400 are certified to the ANSI Z21.10.3-CSA 4.3 water heater standard. These models are approved for potable water heating applications only and cannot be used in closed loop space/hydronic heating applications.
©October 2016 A. O. Smith Corporation. All rights reserved. |
Page 1 of 6 |
www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015 |
AOSBD25000 |
Automatic Circulating
Water Heaters
OTHER XPPLUS FEATURES:
•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 display
•Onboard Modbus communications
•Logs faults, run time, cycles
•Redundant flow and low water protection - factory installed LWCO and flow switch(s)
•Multi-burner sequencing models 2 million btuh and up have 4 burners; models 1.7 million btuh and down have 2 burners
•Redundant ignition controls – should one burner fail remaining burners continue to heat
•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
•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
XPPLUS OPTIONS:
•Condensate neutralization kit
•Vent termination kits
•Skid mounted systems
Recovery Capacities
Recovery Capacities
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BTU/HR |
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Temperature Rise |
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Model |
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Natural Gas |
Water Flow |
°F |
40 |
60 |
70 |
80 |
90 |
100 |
120 |
140 |
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Number |
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Input |
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°C |
22 |
33 |
39 |
44 |
50 |
56 |
67 |
78 |
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XWH-1000 |
920,000 |
GPH |
2,662 |
1,775 |
1,521 |
1,331 |
1,183 |
1,065 |
887 |
761 |
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LPH |
10,078 |
6,719 |
5,759 |
5,039 |
4,479 |
4,031 |
3,359 |
2,880 |
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XWH-1300 |
1,300,000 |
GPH |
3,742 |
2,495 |
2,139 |
1,871 |
1,663 |
1,497 |
1,247 |
1,069 |
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LPH |
14,167 |
9,444 |
8,095 |
7,083 |
6,296 |
5,667 |
4,722 |
4,048 |
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XWH-1700 |
1,700,000 |
GPH |
4,904 |
3,269 |
2,802 |
2,452 |
2,180 |
1,962 |
1,635 |
1,401 |
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LPH |
18,565 |
12,376 |
10,608 |
9,282 |
8,251 |
7,426 |
6,188 |
5,304 |
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XWH-2000 |
2,000,000 |
GPH |
5,794 |
3,862 |
3,311 |
2,897 |
2,575 |
2,317 |
1,931 |
1,655 |
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LPH |
21,931 |
14,621 |
12,532 |
10,966 |
9,747 |
8,773 |
7,310 |
6,266 |
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XWH-2600 |
2,600,000 |
GPH |
7,501 |
5,000 |
4,286 |
3,750 |
3,334 |
3,000 |
2,500 |
2,143 |
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LPH |
28,393 |
18,929 |
16,225 |
14,196 |
12,619 |
11,357 |
9,464 |
8,112 |
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XWH-3400 |
3,400,000 |
GPH |
9,891 |
6,594 |
5,652 |
4,945 |
4,396 |
3,956 |
3,297 |
2,826 |
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LPH |
37,441 |
24,961 |
21,395 |
18,721 |
16,641 |
14,976 |
12,480 |
10,697 |
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©October 2016 A. O. Smith Corporation. All Rights Reserved |
Page 2 of 6 |
www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015 |
AOSBD25000 |
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