AERCO BMK 1.5 LN July 2011 - Manual (Page 59)

CHAPTER 5: MODE OF OPERATION
PR2: 05/09/12 Page 59 of 152
Benchmark 1.5LN Low NOx Boiler
Operation and Maintenance Manual
OMM-0041_0D
GF-120
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
Combination Control System Setup and Startup 5.7.2
Setup for the Combination Mode requires entries to be made in the Configuration Menu for
boiler mode, remote signal type and setpoint. The setpoint is adjustable from 40°F to 240°F.
Enter the following settings in the Configuration Menu:
MENU OPTION SETTING
Boiler Mode Combination
Remote Signal BMS (PWM Input)
Internal Setpt 40°F to 240°F
Refer to paragraph 3.3 for instructions on changing menu options.
While it is possible to change other temperature-related functions for combination mode, thes
functions are preset to their factory default values. These default settings work well in most
applications. It is suggested that AERCO be contacted prior to changing settings other than the
unit’s setpoint. For a complete listing of temperature related function defaults, see Appendix E.
To set the unit to the manual mode, press the
AUTO/MAN switch. The MANUAL LED will light.
To set the unit back to the auto mode, press the AUTO/MAN switch. The MANUAL LED will go
off and the REMOTE LED will light.
When the boiler is switched to BMS mode, the AERCO BMS controls the valve position. There
are no setup requirements to the boiler(s) in this mode.