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All Categories > Commercial Water Heaters > High Efficiency NON NOx Commercial Water Heaters > A.O. Smith® High Efficiency NON NOx Commercial Water Heaters > Cyclone® MXi Commercial Gas Water Heaters > Item # BTH-300(A)  

Item # BTH-300(A), Cyclone® MXi Commercial Gas Water Heaters


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Cyclone® MXi Modulating

Modulating burner advances the cyclone® to higher levels of efficiency.




Unit of Measure: Imperial Metric Both

Specifications  · Maximum Recovery (ºF)  · Maximum Recovery (ºC)  · Dimensions  · Electrical Characteristics  · 4" Vent Pipe  · 6" Vent Pipe  · Optional Kits  · Features  · Testing and Certifications  · Warranty

Specifications

Manufacturer

A. O. Smith®

Type

Liquid Propane Gas
Natural Gas

Input Power

300000 BTU/hr
88
kW

Thermal Efficiency

96 %

Approximate Capacity

119 U.S. gal
451
L
119
gal

Size of Gas Connection

1-1/2 in. NPT

Standard Shipping Weight

855 lb
387
kg

ASME Shipping Weight

855 lb
387
kg

Minimum Gas Supply Pressure

For Natural Gas: 1.19 kPa
For Liquid Propane Gas: 2.12
kPa
For Natural Gas: 4.8
inWc
For Liquid Propane Gas: 8.5
inWc

Maximum Gas Supply Pressure

14 inWc
3.49
kPa

Number of Installed Elbows

1
2

3

4

5

6

Industry Standards

ANSI Z-21.10.3 - CSA 4.3
ASHRAE/IESNA 90.1

ASME Certified

ASME Optional

NSF

Note

Recovery capacities are based on AHRI rated thermal efficiencies.


Maximum Recovery (ºF)

Recovery at 30 ºF Temperature Rise

1164 gal/h

Recovery at 40 ºF Temperature Rise

873 gal/h

Recovery at 50 ºF Temperature Rise

698 gal/h

Recovery at 60 ºF Temperature Rise

582 gal/h

Recovery at 70 ºF Temperature Rise

499 gal/h

Recovery at 80 ºF Temperature Rise

436 gal/h

Recovery at 90 ºF Temperature Rise

388 gal/h

Recovery at 100 ºF Temperature Rise

349 gal/h

Recovery at 110 ºF Temperature Rise

317 gal/h

Recovery at 120 ºF Temperature Rise

291 gal/h

Recovery at 130 ºF Temperature Rise

269 gal/h

Recovery at 140 ºF Temperature Rise

249 gal/h


Maximum Recovery (ºC)

Recovery at 17 ºC Temperature Rise

4405 L/h

Recovery at 22 ºC Temperature Rise

3304 L/h

Recovery at 28 ºC Temperature Rise

2643 L/h

Recovery at 33 ºC Temperature Rise

2202 L/h

Recovery at 39 ºC Temperature Rise

1888 L/h

Recovery at 44 ºC Temperature Rise

1652 L/h

Recovery at 50 ºC Temperature Rise

1468 L/h

Recovery at 56 ºC Temperature Rise

1321 L/h

Recovery at 61 ºC Temperature Rise

1201 L/h

Recovery at 67 ºC Temperature Rise

1101 L/h

Recovery at 72 ºC Temperature Rise

1017 L/h

Recovery at 78 ºC Temperature Rise

944 L/h


Dimensions

Schematic

Dimension A

4.75 in
12.07
cm

Dimension B

33.12 in
84.12
cm

Dimension C

4.75 in
12.07
cm

Dimension D

52 in
132.08
cm

Dimension E

75.75 in
192.41
cm

Dimension F

73.75 in
187.3
cm

Dimension G

12.75 in
32.39
cm

Dimension H

63.13 in
160.35
cm

Dimension I

69.25 in
175.9
cm

Dimension J

23 in
58.43
cm


Electrical Characteristics

AC Voltage

120 V

Frequency

60 Hz

Current

5 A


4" Vent Pipe

One 90º Elbows for Maximum 4" Vent Pipe

65 ft
19.8
m

Two 90º Elbows for Maximum 4" Vent Pipe

60 ft
18.2
m

Three 90º Elbows for Maximum 4" Vent Pipe

55 ft
16.8
m

Four 90º Elbows for Maximum 4" Vent Pipe

50 ft
15.2
m

Five 90º Elbows for Maximum 4" Vent Pipe

45 ft
13.7
m

Six 90º Elbows for Maximum 4" Vent Pipe

40 ft
12.2
m


6" Vent Pipe

One 90º Elbows for Maximum 6" Vent Pipe

115 ft
35
m

Two 90º Elbows for Maximum 6" Vent Pipe

110 ft
33.5
m

Three 90º Elbows for Maximum 6" Vent Pipe

105 ft
32
m

Four 90º Elbows for Maximum 6" Vent Pipe

100 ft
30.5
m

Five 90º Elbows for Maximum 6" Vent Pipe

95 ft
29
m

Six 90º Elbows for Maximum 6" Vent Pipe

90 ft
27.4
m


Optional Kits
  • Optional Concentric Vent Kits
    • BTH-120 - 250 vent kit p/n 9006328005
    • BTH-300 - 500 vent kit p/n 9006144005
  • Optional Low Profile Termination Vent Kits
    • 3" Flush Mount Vent Kit p/n 9008933005 4" Flush Mount Vent Kit p/n 9008934005 6" Flush Mount Kit p/n 9008935005
    • Optional Condensate Neutralization Kits BTH-120-199 kit p/n 9007959005 BTH-250-500 kit p/n 9007960005




Features
The full line of A. O. Smith Cyclone® Mxi condensing water heaters has been designed to provide years of dependable service and feature industry leading technology. Models are available from 120000 to 500000 Btu/h and all deliver thermal efficiencies of 95 % and higher. The unique helical coil heat exchanger limits weld joints for optimal service life while maximizing heat transfer.

Cyclone is the industry leader in high efficiency commercial water heating with over a quarter million Cyclone®s sold since 1996. The current Mxi modulating models adjust firing rate to the specific demand further increasing efficiency and money savings.

Intelligent Control System with Lcd Display
  • Exclusive A. O. Smith designed control system.
  • Provides detailed water heater status information.
  • Precise temperature control adjustable from 90 to 180 degrees.
  • Built-in diagnostics.
  • Run history information.
  • Cyclone water heaters are compatible with the iCOMM™ remote monitoring system.
Submerged Combustion Chamber, with Helical Heat Exchanger Coil
  • Positioned in center of tank, surrounded by water to virtually eliminate radiant heat loss from chamber.
  • Direct spark ignition.
  • Spiral heat exchanger keeps hot burner gases swirling, uses centrifugal force to maximize efficiency of heat transfer to water in tank.
  • Spiral heat exchanger reduces lime scale from forming on water-side surfaces, which maintains energy efficiency over time.
Powered Anodes Standard on All Models
  • Provides long-lasting tank protection in varying water conditions.
  • Powered anodes are non-sacrificial.
  • Automatically adjusts output needed to properly protect the tank.
Permaglas® Ultra Coat™ Glass Lining
  • Glass coating is applied using a liquid slush coating technique to ensure uniform coating.
  • Heat exchanger coil is glassed both externally and internally for optimum protection.
Mechanical Venting Versatility
  • Conventional power venting or direct venting.
  • Vents vertically or through a sidewall.
  • Front located exhaust and condensate connections allow for easy install and access.
  • Vents with low cost PVC Schedule 40 intake and exhaust pipe. Approved for optional CPVC Schedule 40, Polypropylene and AL29-4C stainless steel vent materials.
  • Direct-vent intake and exhaust pipe can terminate separately outside building or through single opening, using concentric vent assembly.
  • Canadian installations require ULC S636 PVC/CPVC, ULC S636 Polypropylene and AL29-4C stainless steel pipe for intake and exhaust.
High Efficiency Modulating Pre-Mix Powered Burner
  • Down-fired pre-mix burner provides optimum efficiency and quiet operation.
  • Top-mounted burner position prevents condensation from affecting burner operation.
Space-Saving Design for Installation Flexibility
  • Reduced footprint, ease of service, protection from water damage in case of flooding.
  • Easy-to-remove top cover for convenient access to serviceable parts.
  • 0" installation clearances on sides and rear, 1-1/2" installation clearance on top.
  • Handhole cleanout allows easy access to tank interior for cleaning.
  • 0" clearance to combustibles, approved for installation on combustible floors.




Testing and Certifications
Codes and Standards
  • CSA® certified and ASME rated T&P relief valve
  • Maximum hydrostatic working pressure: 160 PSI
  • All models are design certified by Underwriters Laboratories (UL), Inc., to ANSI Z21.10.3 - CSA® 4.3 Standards
  • Meets the thermal efficiency and standby loss requirements of the U.S. Department of Energy and current edition ASHRAE/IESNA 90.1
  • Design-certified by Underwriters Laboratories to NSF standard 5 for 180 ºF (62 ºC) water
  • Complies with SCAQMD Rule 1146.2 and other Air Quality Management Districts with similar requirements for low-NOx emissions
  • ASME tank construction optional on 120-500 model sizes




Warranty
  • 3-Year Limited Warranty.
  • Optional 5-Year Extended Tank Warranty.




 MORE IMAGES 

·  Standards for Cyclone® MXi Commercial Gas Water Heaters

·  Optional Kits


 DOWNLOADS 

Brochure for Cyclone® MXi Commercial Gas Water Heaters
(PDF, 1500KB)


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