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Amerec AI Series 42kW Commercial Steam Room Generator, 480V/3PH

Questions? Call us at 307-228-7754

Amerec AI Series 42kW Commercial Steam Room Generator, 480V/3PH

The Amerec AI-42 commercial steam generator can power one or two large steam baths with dimensions up to 2,100 adjusted cubic feet (ACF).

The AI-42 unit comes with an ASME-certified pressure vessel for instant steam, durable electronic components, temperature safety system, sight glass, diagnostic systems using LED lights, 3-level water sensing system with low water cutoff, and a variety of other noteworthy features.

Health clubs, day spas, hotels, and commercial wellness sites trust the powerful Amerec AI-42 commercial steam boiler for around-the-clock, automated operation. The unit features an all-steel exterior and multiple safety features which help minimize service costs and crucial downtime. Amerec AI Series generators are engineered for ease of use and easy on-site maintenance.

The AI-42 steam bath generator is UL and cUL listed and complies with ASME requirements to ensure safety and quality. All Amerec AI units are pre-tested and factory-assembled to assure that your generator is working perfectly.

The Amerec AI-42 is available in 208V three-phase (9006-423), 240V three-phase (9006-424), and 480V three-phase (9006-424) configurations.

The AI-42 requires the use of a control for operation. Controls allow facility operators to control temperature, duration, and other steam room features. Select the available control with features that best suit your preferences.

We recommend the addition of the available ADI Automatic Drain System with your AI-42 unit. The ADI Automatic Drain System performs daily draining of the boiler tank to reduce sludge and scale build-up.


  • AI-42 steam boiler
  • Two 3/4” NPT steam heads
  • Installation and operation manual
  • Limited warranty


  • Pressurized vessel for instant steam
  • Durable electronic components
  • Low water cut-off with manual reset
  • 3/4” drain port
  • Room high limit temperature safety system
  • Operating, electronic high limit pressure control systems
  • Optional D24/7 digital time clock can be used for both generator on/off settings and ADI-D Autodrain system
  • Sight glass
  • Alarm circuit panic button
  • ASME safety valve
  • ASME certified low-pressure operation vessel


Model      Al-42
Minimum Adjusted Cubic Feet       1800
Maximum Adjusted Cubic Feet       2100
Shipping Weight       255 lbs
Kilowatt Rating       42 KW
Electrical Specifications       Electrical Chart
Water Supply Connection       1/2" NPT
Generator Steam Line Connection       3/4" NPT
Steam Head Connection       3/4" NPT
Drain Connection       3/4" NPT
Safety Relief Valve Connection       3/4" NPT
Safety Relief Valve PSIG       15 PSIG
Control "Rough In" Cut Out       2-1/8" x 3-1/4"
Control Sensor Cable       25', 2 Conductor, 22 AWG, Shielded Cable
Control Sensor "Rough In" Cut Out       7/8" Diameter
Generator Control Connection       3 Position Terminal Block
Generator Control Cable       25', 3 Conductor, 22 AWG, Shielded Cable
Width       17-1/2"
Depth       20-3/4"
Height       23-1/4"


Amerec warrants that Amerec Steam Boilers and Temperature Controls (warranted products) are free of manufacturing defects both as to workmanship and material and will replace or repair defective parts or equipment for the period of time and in accordance with the conditions set forth below:

1. Applicability: This warranty applies when the warranted product (a) is installed in accordance with installation instructions provided, (b) is properly installed and reasonably maintained, and (c) has not been subjected to damage, misuse, or abuse.

2. Registration: This warranty becomes valid only after the Limited Warranty Registration form, provided with this warranty, is completely filled out and signed by the original purchaser and sent to Amerec within sixty (60) days from the date of original installation. This warranty is non-transferable and shall extend only to the original installation.

3. Duration of Warranty: Amerec or its authorized representative will provide parts to replace those with manufacturing or workmanship defects for a period of one (1) year from the date of original installation.

4. Return Authorization: A return authorization number assigned by an Amerec representative must accompany all returned parts. Parts which are returned without a return authorization number may not be repaired or replaced.

5. Procedure: Requests for repair or replacement, a return authorization number, or warranty information should be directed to AMEREC by calling toll-free 1-800-363-0251, by email to or by writing to AMEREC, 575 Cokato St. E, Cokato, MN 55321. Defective product or parts returned for repair or replacements must be shipped to Amerec at below address. Shipping costs for return of replacement product or parts to the purchaser will be at the expense of the purchaser.

6. Limitations and Remedies: There are no warranties which extend beyond the descriptions of the face hereof. This limited warranty is in lieu of all warranties, expressed or implied, and of all other obligations or liabilities on the part of Amerec. There shall be no implied warranty of merchantability.

Amerec neither assumes nor authorizes any person top assume for it any other obligation or liability in connection with the sale of its products. Damages for breach of this warranty shall not exceed the lesser of the cost of repair or replacement shall be the exclusive remedy to the purchaser.

Under no circumstances shall Amerec be liable by virtue of this warranty or otherwise for any special, indirect, secondary, incidental, or consequential damage of any nature to any person or property arising directly or indirectly out of the use of this or inability to use a warranted product.

Some states do not allow limitations on how long a implied warranty lasts, or the exclusion or limitation of incidental or consequential damages, so the above limitations and exclusions may not apply to you.

7. Disputes: Any lawsuit alleging breach of this limited warranty shall be commenced within one (1) year from the date of breach. In addition, any such lawsuit may be commenced only in Wright County, Minnesota.