AERCO C-More Controls Manual June 2010 - Manual (Page 11)

C-More Controller for Benchmark, Innovation & KC
USER MANUAL
04/22/14 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 Page 11 of 162
OMM-0032_0E Phone: 800-526-0288 GF-112
1.3.19 Modbus Network Timeout Control
The Modbus communications system connecting the C-More to a central Energy Management
or Building Automation System becomes more burdened as we add Boilers and Water Heaters
to the system.
It is possible in larger installations for a boiler or water heater to drop off line due to the inability
of the BMS/ACS to respond to the C-More in a timely manner (previously set at 10 seconds).
In order to eliminate Modbus timeout errors in an installation consisting of more than 8 Boilers, a
Network Timeout menu Item has been added to the “Configuration Menu”.
This entry allows the user to modify the time interval in which the C-More expects a reply from
the BMS/ACS before invoking a MODBUS ERROR.
The Network Timeout entry is located in the Configuration Menu. The setting range is 5 to 240
seconds. The default is 30 seconds.
1.3.20 Fault Warning Functions
Enhanced Fault/Warning functions are associated with the following five input functions:
1. Exhaust Temp Warning
2. Inlet Water Temp Warning
3. Inlet Gas Pressure Warning
4. Gas Plate Dp Warning
5. Inlet Water Flow Warning
Whenever values for these functions exceed or drop below defined thresholds, a warning
message will alternate with the normal message on the VFD Display.
The Alternating messages are only active when in the following menus: OPERATING, SETUP
and CONFIGURATION.
These Fault/Warning functions can be Enabled or Disabled in the DIAGNOSTICS Menu.
1.3.21 0 – 10V Out Test
The 0-10v Output Test is located in the Calibration Menu and allows the Blower Output Voltage
on the 0-10 Volt port to be varied for testing. This allows the 0-10v output to be tested without
having to ignite the unit.
1.4 CONTROL PANEL DESCRIPTION
The C-More Control Panel is available in two models. One has a vertical control panel layout, as
shown in Figure 1-1A and is used on Benchmark and Innovation units. The other model has a
horizontal panel control layout, as shown in Figure 1-1B and is used on KC1000 Series units.
These models contain identical controls, indicators and displays and are functionally identical.
These controls, indicators and displays are listed and described in Table 1-2.
Table 1-1: Feature Compatibility Chart
Feature
Equipment
Compatibility
Exceptions
Ignition Retry
Water Heaters AND
Boilers
Fire Rate Change Rate Boilers ONLY
PID Correction
Deadband Water Heaters AND
Boilers
Not active in Direct Drive Mode