A.O. Smith ACI-CRS-22WM-N, ACI-CRS-22WM-P, ACI-CRS-23WM-N, ACI-CRS-23WM-P, ACI-CRS-33WM-N User Manual
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TANKLESS WALL MOUNT
LIGHTWEIGHT
• Constructed of anodized aluminum frame
• Utilizes the industry’s lightest 199,000 BTU
high efficiency condensing tankless heater
EXPANDABLE
• Multiple design and installation
configurations
• Up to 597,000 BTU on a single rack system
• Able to link up to 20 heaters together with
multi-link system
Commercial Tankless
Rack System
REDUNDANCY
• Multiple combustion systems provide peace
of mind
• Easily isolate a unit for maintenance which
extends the life of the heaters
EASY FIELD INSTALLATION
• Reduce installation costs with three simple
connections (cold water, hot water, and gas)
EASILY INTEGRATE STORAGE
• As the world’s largest water heater
manufacturer, we can easily integrate
storage into the design
WARRANTY
• 6 year limited heat exchanger
• 5 year limited tankless parts
• 1 year limited rack parts
© July 2017 A. O. Smith Corporation. All Rights Reserved
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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AOSCG14002
Commercial Tankless
Rack System
Model Number
Indoor Models
ACI-CRS-22WM-N 2 Natural 15,000 398,000 15.2 12.6 10.8 9.4 8.4 7.6
ACI-CRS-22WM-P 2 Propane 13,000 398,000 15.2 12.6 10.8 9.4 8.4 7.6
ACI-CRS-23WM-N 2 Natural 15,000 398,000 15.2 12.6 10.8 9.4 8.4 7.6
ACI-CRS-23WM-P 2 Propane 13,000 398,000 15.2 12.6 10.8 9.4 8.4 7.6
ACI-CRS-33WM-N 3 Natural 15,000 597,000 22.8 18.9 16.2 14.1 12.6 11.4
ACI-CRS-33WM-P 3 Propane 13,000 597,000 22.8 18.9 16.2 14.1 12.6 11.4
Outdoor Models
ACO-CRS-22WM-N 2 Natural 15,000 398,000 15.2 12.6 10.8 9.4 8.4 7.6
ACO-CRS-22WM-P 2 Propane 13,000 398,000 15.2 12.6 10.8 9.4 8.4 7.6
ACO-CRS-23WM-N 2 Natural 15,000 398,000 15.2 12.6 10.8 9.4 8.4 7.6
ACO-CRS-23WM-P 2 Propane 13,000 398,000 15.2 12.6 10.8 9.4 8.4 7.6
ACO-CRS-33WM-N 3 Natural 15,000 597,000 22.8 18.9 16.2 14.1 12.6 11.4
ACO-CRS-33WM-P 3 Propane 13,000 597,000 22.8 18.9 16.2 14.1 12.6 11.4
Model Number Gas Manifold Connection Hot/Cold Water Manifold Connections Power
Indoor Models
ACI-CRS-22WM-N 1-1/2” Schedule 40 pipe 2” Copper tube 120 V, 60 Hz, 4.5 A
ACI-CRS-22WM-P 1-1/2” Schedule 40 pipe 2” Copper tube 120 V, 60 Hz, 4.5 A
ACI-CRS-23WM-N 1-1/2” Schedule 40 pipe 2” Copper tube 120 V, 60 Hz, 6.75 A
ACI-CRS-23WM-P 1-1/2” Schedule 40 pipe 2” Copper tube 120 V, 60 Hz, 6.75 A
ACI-CRS-33WM-N 1-1/2” Schedule 40 pipe 2” Copper tube 120 V, 60 Hz, 9 A
ACI-CRS-33WM-P 1-1/2” Schedule 40 pipe 2” Copper tube 120 V, 60 Hz, 9 A
Outdoor Models
ACO-CRS-22WM-N 1-1/2” Schedule 40 pipe 2” Copper tube 120 V, 60 Hz, 4.5 A
ACO-CRS-22WM-P 1-1/2” Schedule 40 pipe 2” Copper tube 120 V, 60 Hz, 4.5 A
ACO-CRS-23WM-N 1-1/2” Schedule 40 pipe 2” Copper tube 120 V, 60 Hz, 6.75 A
ACO-CRS-23WM-P 1-1/2” Schedule 40 pipe 2” Copper tube 120 V, 60 Hz, 6.75 A
ACO-CRS-33WM-N 1-1/2” Schedule 40 pipe 2” Copper tube 120 V, 60 Hz, 9 A
ACO-CRS-33WM-P 1-1/2” Schedule 40 pipe 2” Copper tube 120 V, 60 Hz, 9 A
Number
of
Heaters
Configurations Fuel Type
Gas Consumption Input Max Flow (GPM)
Minimum
BTU/h
Maximum
BTU/h
50 F Rise 60 F Rise 70 F Rise 80 F Rise 90 F Rise 100 F Rise
Dimensions in Inches Shipping Dimensions in Inches
Model Number
ACI-CRS-22WM-N 46 13.02 57 77 26.25 70 240
ACI-CRS-22WM-P 46 13.02 57 77 26.25 70 240
ACI-CRS-23WM-N 66 13.02 57 77 26.25 70 250
ACI-CRS-23WM-P 66 13.02 57 77 26.25 70 250
ACI-CRS-33WM-N 66 13.02 57 77 26.25 70 350
ACI-CRS-33WM-N 66 13.02 57 77 26.25 70 350
Outdoor Models
ACO-CRS-22WM-N 46 13.02 57 77 26.25 70 240
ACO-CRS-22WM-P 46 13.02 57 77 26.25 70 240
ACO-CRS-23WM-N 66 13.02 57 77 26.25 70 250
ACO-CRS-23WM-P 66 13.02 57 77 26.25 70 250
ACO-CRS-33WM-N 66 13.02 57 77 26.25 70 350
ACO-CRS-33WM-N 66 13.02 57 77 26.25 70 350
*Line drawings on pages 3 and 4.
Dimensions and specifications subject to change without notice in accordance with our policy of continuous product improvement. Not part of commercial stocking program.
Model numbers- First number 2/3/4/5/6 = number of tankless units mounted. Model numbers - Second number 2/3/4/5/6 = rack size (max units that could fit on that rack)
A
Length
B
Width
C
Height
Length Width Height
Approx. Shipping
Weight (lbs)
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AOSCG14002
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