AERCO C-More Controls Manual June 2010 - Manual (Page 36)

C-More Controller for Benchmark, Innovation & KC
USER MANUAL
Page 36 of 162 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 04/22/14
GF-112 Phone: 800-526-0288 OMM-0032_0E
Table 3-1: Menu Item Descriptions - Continued
MENU LEVEL & OPTION DESCRIPTION
Configuration Menu - (Continued)
System Start Tmp
(If Outdoor Sensor is
Enabled) If outdoor sensor is enabled, this menu item allows the system start
temperature to be set from 30°F to 100°F. Default is 60°F.
Setpoint Lo Limit Used to set the minimum allowable setpoint (40°F to Setpoint Hi
Limit). Default is 60°F
Setpoint Hi Limit Used to set the maximum allowable setpoint (Setpoint Lo Limit to
240°F). Default is 200°F.
Temp Hi Limit This is the maximum allowable outlet temperature (40°F to 240°F).
Any temperature above this setting will turn off unit. The temp must
then drop 5°F below this setting to allow the unit to run. Default Hi
Limit is 210°F.
Max Valve Position Sets the maximum allowable Valve Position for the unit (40% to
100%). Default is 100%.
Pump Delay Timer
(If Unit Type = Boiler) Specifies the amount of time (0 to 30 min.) to keep the pump
running after the unit turns off. Default is zero.
Aux Start On Dly Specifies the amount of time to wait (0 to 240 sec.) between
activating the Aux Relay (due to a demand) and checking the pre-
purge string to start the unit. Default is 0 sec.
Failsafe Mode Allows the Failsafe Mode to be set to either Constant Setpoint or
Shutdown. Default is Shutdown.
Analog Output Can be set to allow this output to monitor Setpoint, Outlet
Temperature, Valve Position 4-20 mA, Valve Position 0-10v or be
set to OFF. Default is Valve Position 0-10v.
Low Fire Timer Specifies how long (2 to 600 sec.) to remain in the low fire position
after ignition, before going to the desired output. Default is 2 sec.
Setpt Limiting Allows Setpt Limiting to be enabled or disabled. Default is disabled.
Setpt Limit Band When Setpt Limiting is enabled, this menu item allows the Setpt
Limit Band to be set from 0°F to 10°F. Default is 5°F.
Network Timeout Specifies the timeout value before a Modbus Fault is declared.
Setting range is 5 - 999 seconds. Default is 30 seconds.
HI DB Setpt En Operating at a Valve Position below this value will inhibit the
DEADBAND feature. When operating at a Valve Position below this
value, the effective Setpoint is Active Setpoint + Deadband High.
Setting range is 0-100. Default is 30.
Demand Offset
This entry will reduce excessive ON/OFF cycling in AUTO mode.
When this entry is a non-zero value, the unit will not turn on again
until Valve Position In reaches the Start Level value AND the Outlet
Temperature goes below Active Setpoint - Demand Offset. In
addition, the boiler will fire at the 29% Valve Position level or below
for a period of one minute. When this entry is set to zero, the unit
will turn on again as soon as the Valve Position In reaches the Start
Level value. There will be no one minute delay firing at the 29%
Valve Position level. Setting Range is 0-25. Default is 10.