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6.4.4.1 Dual Temperature Coil Mode
The mode is determined by the OA temperature and the heating and cooling lockout
temperature settings as well as the BMS command. Both heating or cooling demand drive the
same cooling command analog and cooling enable digital output.
6.4.4.2 Dual Temperature Coil Cooling Operation
This type of cooling modulates a 0–10VDC cooling command output using PI control to maintain
the cooling setpoint. The KP and Ti can be adjusted to fine tune the control. The NO4 cooling
enable contact is engaged whenever the cooling demand is at 1% or higher.
6.4.4.3 Dual Temperature Coil Heating Operation
This type of heating modulates a 0–10VDC cooling command output using PI control to maintain
the heating setpoint. The KP and Ti can be adjusted to fine tune the control. The NO4 cooling
enable contact is engaged whenever the heating demand is at 1% or higher.
NOTE: The valve
control can be set
directly from the
BMS if you change
Valve control to BMS.
6.4.4.4 Dual Temperature Coil System Monitoring
This screen is available for monitoring the system in
Unit Status
.
TEMPERING CONTROL
