AERCO C-More Controls Manual June 2010 - Manual (Page 46)

C-More Controller for Benchmark, Innovation & KC
USER MANUAL
Page 46 of 162 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 04/22/14
GF-112 Phone: 800-526-0288 OMM-0032_0E
Setpoint
Setpoint + Deadband High
Outlet
Temp
Figure 3-2: Valve Position Less Than HI DB Setpt EN
If the unit Valve Position is less than the HI_DB_SETPT_EN setting, The C-More will aim to
bring the Outlet Temperature to the Setpoint + Deadband_High value. This will delay shutting
down the unit, thus decreasing “on/off cycling”.
Setpoint
Setpoint + Deadband High
Outlet
Temp
Figure 3-3: Valve Position
≥ HI DB Setpt EN
3.1.3 Demand Offset Function
The Demand Offset entry in the Configuration Menu allows delay of re-ignition of the unit while
maintaining proper temperature control.
In normal operation, the unit will re-ignite when the PID Loop calculates that the required Valve
Position is greater than the Start_Level value.
Whenever the Demand_Offset value is Non Zero, the unit will re-ignite when the PID Loop
calculates that the required Valve Position is greater than the Start_Level value AND the Outlet_
Temperature drops below the Setpoint minus the Demand_Offset value.
This will delay the unit re-ignition by waiting for the Outlet Temperature to decay.
The default value for Demand Offset is 10.
When set to zero (0), the PID Turn On Delay is also disabled.