4421 Tradition Trail ● Plano, Texas 75093 ● 972-964-2700 ● 800-836-7472
SP-ENG-211-100-11 Rev 1.8 2 |
P a g e
Title:
EL-20B Air Conditioner for Class I, Division 2 Hazardous Locations Technical Manual
Department:
Engineering
Objective:
To provide important information for maintenance, diagnostics and advance operations of the
DELTA-T EL-20B Series Air Conditioners.
Revision History:
Rev
Date
Owner
Description of Changes
1.0
02-01-18
B. Slotnick
Initial Release
1.1
05-24-18
B. Slotnick
Updated warranty & RMA procedure
1.2
09-06-18
B. Slotnick
Revised minimum anti-short cycle delay & updated Remote
Controller option description
1.3
09-24-18
B. Slotnick
Updated warranty & unit specifications
1.4
02-21-19
B. Slotnick
Updated mounting instructions, alarm settings & RMA
procedure
1.5
06-20-19
B. Slotnick
Updated preliminary testing instructions & compressor
protection default setting
1.6
08-20-19
B. Slotnick
Updated preventative maintenance & warranty information
1.7
01-02-20
B. Slotnick
Updated field serviceable parts
1.8
06-03-20
B. Slotnick
Updated System Faults, Alarm Signals & Warranty
Statement of Confidentiality
The Manual and other materials contain proprietary information, comprising ISC Sales, Inc.'s trade secrets.
Please maintain the confidentiality of all proprietary information during and after the term of the use agreement.
Also, please refrain from using this proprietary information in any other manner, including in any other
business, without ISC Sales, Inc
.’s written approval.
ISC Sales, Inc. reserves the right to revise and otherwise modify the Manual to reflect changes in the
requirements, standards, and operating recommendations. The Manual is the sole property of ISC Sales, Inc.
It must be returned upon the expiration or the termination of the term of use agreement.
By accepting the Manual you have read and understand the Statement of Confidentiality and will abide by its
terms and conditions.
