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Table of Contents
(1) Introduction - 3
(2) Absorption Cycle - 4
(3) Sequence of Operation - 11
(4) Control Panel Identification - 16
(5) Using the Control Panel - 22
• Operator Interface
• Report Menus
• Password
• Operator Settings
• Service Settings
• Field Startup Group
• Machine Configuration Group
• Service Tests
• Diagnostics
(6) Sensors and Controls - 55
(7) Control Strategy - 63
(8) Leaving Chilled Water Temperature
Control - 65
(9) Low Leaving Water Temperature Cutout - 66
(10) Concentration Control - 67
© 2003 American Standard Inc. All rights reserved.
(11) Control System Proportional, Integral, and
Derivative (PID) Control - 69
(12) Control System Limits - 70
(13) Crystallization Sensing Detection and
Recovery (SDR) - 71
(14) Absorber Entering or Low Condensing
Temperature Limit - 75
(15) Low Chilled Water Temperature Cutout
(LCWTC), Low Refrigerant Temperature Cutout
(LRTC), and Differential to Start and top - 76
(16) Interstage Pressure Limit - 81
(17) Generator Solution Temperature Limit - 82
(18) High Exhaust and Gas Temperature
Limit - 83
(19) Steam Control - 86
(20) Generator Entering Hot Water Limit
Control - 87
(21) Purge System - 88
This advanced model Absorption machine was
developed with the assistance of Gas Research Institute.
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