background image

Bulletin 549-A     10/01                   

 

 

 

 

 

 

 

 

 

 

         

Armstrong 

Humidifi cation Group

816 Maple Street, Three Rivers, Michigan 49093 - USA Ph: (616) 273-1415  Fax: (616) 273-9500
www.

armstrong

international.com

Armstrong International, Inc.

Limited Warranty and Remedy

Armstrong International, Inc. (“Armstrong”) warrants to the original user of those products supplied by 

it and used in the service and in the manner for which they are intended, that such products shall be free from 
defects in material and workmanship for a period of one (1) year from the date of installation, but not longer 
than 15 months from the date of shipment from the factory, [unless a Special Warranty Period applies, as list-
ed below].  This warranty does not extend to any product that has been subject to misuse, neglect or altera-
tion after shipment from the Armstrong factory.  Except as may be expressly provided in a written agreement 
between Armstrong and the user, which is signed by both parties, Armstrong 

DOES NOT MAKE ANY OTHER 

REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 
ANY IMPLIED WARRANTY OF MERCHANTABILITY OR ANY IMPLIED WARRANTY OF FITNESS FOR A 
PARTICULAR PURPOSE.  

The sole and exclusive remedy with respect to the above limited warranty or with respect to any other 

claim relating to the products or to defects or any condition or use of the products supplied by Armstrong, 
however caused, and whether such claim is based upon warranty, contract, negligence, strict liability, or any 
other basis or theory, is limited to Armstrong’s repair or replacement of the part or product, excluding any 
labor or any other cost to remove or install said part or product, or at Armstrong’s option, to repayment of the 
purchase price.  As a condition of enforcing any rights or remedies relating to Armstrong products, notice of 
any warranty or other claim relating to the products must be given in writing to Armstrong: (i) within 30 days of 
last day of the applicable warranty period, or (ii) within 30 days of the date of the manifestation of the condi-
tion or occurrence giving rise to the claim, whichever is earlier.  

IN NO EVENT SHALL ARMSTRONG BE 

LIABLE FOR SPECIAL, DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUD-
ING, BUT NOT LIMITED TO, LOSS OF USE OR PROFITS OR INTERRUPTION OF BUSINESS

.  The 

Limited Warranty and Remedy terms herein apply notwithstanding any contrary terms in any purchase order 
or form submitted or issued by any user, purchaser, or third party and all such contrary terms shall be deemed 
rejected by Armstrong.  

Special Warranty Periods are as follows:

Series EHU-700 Electric Steam Humidifi er, Series HC-4000 HumidiClean Humidifi er and 
GFH Gas Fired Humidifi er with Ionic Beds: 

Two (2) years after installation, but not longer than 27 months after shipment from Armstrong’s factory.

Summary of Contents for AM-91A

Page 1: ...spring range is specified AM VSA Models AMEF AMAF FSA Models Figure 1 1 Figure 1 2 Dimensions Armstrong Area Humidifiers Fig 1 1 VSA AM models do not have fans Fig 1 2 FSA AMEF models have electrically operated fans AMAF models utilize air powered fans Installation Procedure B C D F J E H G C D F B J E Table 1 1 Model No B C D E F G H J AM 91A 15 15 16 3 3 8 3 13 16 6 1 16 3 1 16 13 1 4 AMAF 91A 1...

Page 2: ...1 1 4 1 1 4 1 1 4 3 4 Steam Pipe Capacities For computing ability of piping to deliver an adequate supply of steam to humidifier Capacities shown are in pounds per hour Table 2 2 Steam Pipe Capacity at 5 psi Pipe Size in Pressure drop psi per 100 ft of pipe length 1 8 1 4 1 2 3 4 1 1 24 31 44 54 62 1 1 4 52 68 97 120 140 1 1 2 81 100 150 180 210 2 160 210 300 370 430 2 1 2 270 350 500 610 710 Tabl...

Page 3: ...ve Relief Valve A pressure relief valve between the humidifier and pressure reducing valve is a good insurance Humidi fier bodies are only rated for 60 psig steam service Pressure Gage A pressure gage or connection for install ing a gage between reducing valve and the humidifier may save its cost many times over Air and Electrical Connections 10 Min Strainer Steam Trap Steam Trap Steam Supply Dirt...

Page 4: ...r size and type of units required and the location of both humidifier and humidity controllers Sizing and location with natural ventilation These are the average industrial humidification applications with Room temperatures 65 to 80 Relative humidities 35 to 80 Natural ventilation i e infiltration around windows and doors Selection Data Required Minimum Outdoor Temperature for most jobs figure 10 ...

Page 5: ...ges These can be determined from exhaust fan capacity where known The cu ft per hour capacity of the fans divided by the cubic feet of space to be humidified will give the number of air changes Where the capacity of fan or fans is not known air changes can be measured with velometer readings at all open doors elevator shafts etc leading to the room and with fans operating at full capacity Your Arm...

Page 6: ...on is through a jet nozzle or by a fan How air operated units work Air operated units operate in the same manner as electric units except that they Operation Figure 6 1 utilize a pneumatic humidistat as humidity controller in the space and an air operator to open and close the steam valve Explosion hazard humidification Sizing air operated humidifiers for areas where an explosion hazard ex ists is...

Page 7: ...with dirt 2 Return line pressure above humidifier pressure 3 Too much vertical lift 4 Wrong type of trap used 5 Second trap short circuiting the humidifier trap Operation and Servicing Humidifier Discharges Continuously Even though Humidity Has Reached Desired Level A Mechanical Trouble 1 Humidistat fails to open points frozen 2 Dirt holds solenoid plunger in open position 3 Bent solenoid tube hol...

Page 8: ...efects or any condition or use of the products supplied by Armstrong however caused and whether such claim is based upon warranty contract negligence strict liability or any other basis or theory is limited to Armstrong s repair or replacement of the part or product excluding any labor or any other cost to remove or install said part or product or at Armstrong s option to repayment of the purchase...

Reviews: