AERCO C-More Controls Manual June 2010 - Manual (Page 113)

C-More Controller for Benchmark, Innovation & KC
USER MANUAL
04/22/14 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 Page 113 of 162
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9.5.3 BST SETUP MENU
BST Setpt Mode (Selections = Constant Setpoint, Remote Setpoint, Outdoor Reset.
Default = Constant Setpoint)
The BST Setpt Mode item configures the BST to one of the following three Setpoint modes of
operation:
• Constant Setpoint: In the Constant Setpoint Mode, the BST Setpoint is fixed and
must be entered into the BST Setpoint Item.
• Remote Setpoint: In the Remote Setpoint Mode, the BST Setpoint is set by an
external device. When Remote Setpoint is selected, the Remote Signal Type must be
selected.
• Outdoor Reset: The Outdoor Reset mode is based on outside air temperature. The
header temperature will vary up or down in accordance with outside air temperature.
This mode requires that a System Start Temperature, BST Building Reference
Temperature and BST Reset Ratio be programmed into the BST. An outdoor air
sensor MUST be installed and enabled when operating in this mode.
Head Temp Source (Selections = Feed Forward, Network. Default = Feed Forward)
The Head Temp Source item allows the user to define the source of the Header Temperature
Probe as follows:
• Feed Forward
When selecting Feed Forward as the Head Temp Source, the Header Temperature
probe must be connected to the Feed Forward terminal on the Master Boiler. See
Section 9.6.1 for wiring instructions. In this mode the temperature probe must be a
BALCO 1K type probe.
• Modbus Network
When selecting Network as the Head Temp Source, the Temperature probe is
connected to a Modbus Temperature Transmitter, as defined in Section 9.6.2.
o When selecting Network as the Head Temp Source, a Modbus Address
(Header Temp Addr) and Modbus Point (Header Temp Point) must be
entered to define the Modbus Address and Point of the Modbus temperature
transmitter.
Mdbus Temp Units (Selections = Degrees C, Degrees F. Default = Degrees C)
The Mdbus Temp Units item defines the temperature format (Degrees C or Degrees F) of the
temperature readings transmitted by the Modbus Temperature Transmitter to the Master unit.
BST Outdoor Sens (default = disabled)
The BST Outdoor Sens item enables or disables the Outdoor Temperature Sensor used in the
Outdoor Reset Mode. The BST Outdoor Sens item must be enabled when the Outdoor Reset
mode is selected.
Outdoor Temp Source (Selections = Outdoor, Network. Default = Outdoor)
The Outdoor Temp Source item allows the user to define the source of the Outdoor
Temperature Probe utilized in the Outdoor Reset Mode of operation as follows:
• Outdoor
When selecting Outdoor as the Outdoor Temp Source, the Outdoor Temperature
probe must be connected to the Out and Com terminals on the Master Boiler I/O Box,