AERCO C-More Controls Manual June 2010 - Manual (Page 37)

C-More Controller for Benchmark, Innovation & KC
USER MANUAL
04/22/14 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 Page 37 of 162
OMM-0032_0E Phone: 800-526-0288 GF-112
Table 3-1: Menu Item Descriptions - Continued
MENU LEVEL & OPTION DESCRIPTION
Configuration Menu - (Continued)
Deadband High
Deadband Low Deadband High and Deadband Low settings create an "Outlet
Temperature" ZONE in which no Valve Position corrections will be
attempted.
The deadband ZONE is defined as operating with a an Outlet Temperature
anywhere between Active Setpoint + Deadband High
and Active Setpoint - Deadband Low.
When the Outlet Temperature reaches "Active Setpoint" and remains there
for a period of 15 seconds, The unit will go into a DEADBAND MODE at
which point no Valve Position corrections will be attempted while the
Outlet Temperature remains anywhere within the Deadband ZONE. When
the unit is in the "DEADBAND MODE", the °F or °C LED will flash on and
off. When the Outlet Temperature drifts out of the Deadband ZONE, the
DEADBAND MODE will be terminated and the MD LOOP will again
attempt Valve Position corrections.
Setting Range is 0-25. Default is 2 for both Deadband High and Deadband
Low.
Spark Monitor Enables or disables the Spark Monitor function, which displays the AC
current on the input of the Ignition Transformer.
Spark Current Displays the AC current on the input of the Ignition Transformer.
IGST Version Displays the current Ignition Stepper board firmware version.
Slow Shutdown Enable or disable slow shutdown mode. The current setting is displayed.
BST Menu Enable or disable the BST menu. The current setting is displayed.
Spark Current Displays the AC current on the input of the Ignition Transformer.
Tuning Menu
Prop Band Generates a valve position based on the error that exists between the
setpoint temperature and the actual outlet temperature. If the actual error
is less than the proportional band setting (1 to 120°F), the valve position
will be less than 100%. If the error is equal to or greater than the
proportional band setting, the valve position will be 100%. Defaults are
70°F (Boiler), 8°F (Water Heater)
Integral Gain This sets the fraction of the output, due to setpoint error, to add or subtract
from the output each minute to move towards the setpoint. Gain is
adjustable from 0.00 to 2.00 (Defaults are 1.00 for Boilers, 1.60 for Water
Heaters).
Derivative Time This value (0.00 to 2.00 min.) responds to the rate of change of the
setpoint error. This is the time that this action advances the output.
(Defaults are 0.0 min. for Boilers, 0.10 min. for Water Heaters)
Min Load Adj
(If Unit Type = Water
Heater) Setting is adjustable from -50°F to +50°F (Default is zero). It adjusts the
output by adding an offset to the breakpoint chart at minimum flow. This is
used to fine tune Feed-Forward (FFWD) output at low flow levels.
Max Load Adj
(If Unit Type = Water
Heater) Setting is adjustable from -50°F to +50°F (Default is zero). It adjusts the
output by changing the scaling of the breakpoint chart at maximum flow.
FFWD Temp
(If Unit Type = Water Htr) Displays the Feed-Forward temperature.