AERCO Control System (ACS) - Manual (Page 67)

MC2: 04/23/13 Page 67 of 144
GF-131
AERCO Control System (ACS)
Installation, Operation, and Maintenance Manual
OMM-0081_0D
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
4. PROGRAMMING ACS OPERATING MODES
4.1 INTRODUCTION
Prior to programming, the ACS must be mounted and all required wiring completed. In addition,
all connections should be checked for accuracy. Once these items are completed, the ACS is
ready to be programmed for the desired mode of operation for the boiler plant. The steps for
programming will vary somewhat, depending on whether the Outdoor Reset, Remote Setpoint
or Constant Setpoint operating mode is selected.
NOTE
The Level 1 Password ( 159) must be entered prior to programming the
ACS for operation in any of the modes described in paragraphs 4.2
through 4.4. Refer to Chapter 3 for instructions on password entry and
basic menu processing procedures.
4.2 OUTDOOR RESET MODE
The Outdoor Reset mode operates based on outside air temperature. In this mode, the header
supply water temperature will vary up or down in accordance with outside air temperature.
Therefore, in order to set up and operate in this mode, an outdoor air sensor MUST be installed.
This mode requires entries to be made in the Field Adjust Menu, Configuration Menu and Relay
Menu. For Modulex installations an entry will also be required in +the Calibration Menu. The
required entries are as follows:
FIELD ADJUST MENU
HEADER SET MODE
RESET RATIO
BLDG REF TEMP
CONFIGURATION MENU
BOILER OPERATING MODE
BLR START LEVEL
BLR STOP LEVEL
RELAY MENU
SYSTEM START RELAY TEMP
CALIBRATION MENU (Required Only For Modulex Installations)
LOAD START PCT
The programming set-up instructions for the above menu options are provided in paragraphs
which follow.