MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS
Installation, Operation & Maintenance Manual
Page 2 of 146 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0087_0F
07/13/15 Phone: 800-526-0288 GF-143
DISCLAIMER
The information contained in this manual is subject to change without notice from AERCO
International, Inc. AERCO makes no warranty of any kind with respect to this material, including,
but not limited to, implied warranties of merchantability and fitness for a particular application.
AERCO International is not liable for errors appearing in this manual, nor for incidental or
consequential damages occurring in connection with the furnishing, performance, or use of
these materials.
AERCO Technical Support:
(Mon–Fri, 8am-5pm EST)
1 (800) 526-0288
AERCO Document Conventions
In this document, some types of information are presented as shown in the following examples:
Message Type Example and Description
Notes
NOTE messages indicate specific information related to the
surrounding contextual information, and highlighted for special
attention.
Cautions
CAUTION!
CAUTION messages inform of potential problems relating to the
functioning of equipment, safety to persons, harm to the
environment, and/or damage to property or equipment.
Warnings
WARNING!
WARNING messages warn of potential dangerous situations that
may result in serious injury and/or death to persons or animals.
Text is red within a red box.
Instructions
How Instructions are Presented
1. Instructions are shown in a blue box with an underlined title.
2. All text, excepting in accompanying illustrations, is colored blue.
3. All procedures are listed in steps starting with “1.” and using
letters [a), b), c), etc.] indicating sub=steps.
4. Steps that are continued on the next page have a “- Continued”
appended to the instruction title.
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