AERCO C-More Controls Manual June 2010 - Manual (Page 72)

C-More Controller for Benchmark, Innovation & KC
USER MANUAL
Page 72 of 162 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 04/22/14
GF-112 Phone: 800-526-0288 OMM-0032_0E
Combination Control System Field Wiring
Wiring for this system is between the BMS panel, the CCP and the B.M.S. (PWM) IN terminals
in the I/O Box. For ACS applications, the wiring is between the ACS panel, the ACS Relay
Panel (optional, depending on application), and the RS485 Comm. Terminals in the I/O Box.
Wire the units using a shielded twisted pair of 18 to 22 AWG wire. When wiring multiple units,
each unit’s wiring must conform to the above. For a complete CCP system-wiring diagram see
the AERCO CCP-1 literature (BMS 168 applications)/TAG-0049 (ACS).
Combination Control System Setup and Startup
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 220°F.
Enter the following settings in the Configuration Menu:
MENU OPTION
SETTINGS
BMS 168 Application ACS Applications
Boiler Mode Combination Combination
Remote Signal BMS (PWM) Input Network (RS485)
Internal Setpt 40°F to 240°F 40°F to 240°F
Refer to paragraph 2.2 for instructions on changing menu options.
While it is possible to change other temperature-related functions for combination mode, the unit
is factory preset. These preset settings work well in most applications. It is suggested that
AERCO be contacted prior to changing settings other than the unit’s setpoint.
5.4 START SEQUENCE
When the unit is in the Standby mode and all pre-purge safety switches are closed, the READY
light above the ON/OFF switch will be lit. When there is a demand for heat, the following events
will occur:
NOTE
If any of the Pre-Purge safety switches (low water level, high
water temperature, high or low gas pressure) are open, the
appropriate fault message will be displayed. Also, the appropriate
fault messages will be displayed throughout the start sequence, if
the required conditions are not observed.
1. The DEMAND LED status indicator will light.
2. The unit checks the proof of closure switch on the Safety Shut-Off Valve (SSOV)
shown in Figure 5-2.