Valent Controls IOM 49 IOM-C1-0616
Part Number 474626
Supply Air Heating High Deadband Setpoint
When Supply Air Deadband is enabled and the
unit is heating, this defines the amount the
Supply Air Temperature can exceed the current
control setpoint before the control loop will
respond.
Supply Air Heating Low Deadband Setpoint
When Supply Air Deadband is enabled and the
unit is heating, this defines the amount the
Supply Air Temperature can fall below the
current control setpoint before the control loop
will respond.
Supply Air Temperature Control
This setpoint is used to force the unit into supply
air only mode. If the unit detects a space
temperature sensor it will automatically switch
from Supply Air Only control to Supply Air With
Reset control. If supply air control is desired
when a space sensor is installed, this point must
be set to Force Supply Only. In supply air
temperature control, the unit attempts to control
the supply air temperature to a fixed supply
temperature setpoint. In space temperature
control with supply air temperature reset, the
unit compares the space temperature to the
space temperature heating setpoint and cooling
setpoint to calculate the supply air temperature
setpoint. The unit then modulates heating and
cooling to maintain the supply air temperature at
the setpoint.
Supply Air Temperature High Limit
If the supply air temperature exceeds this
temperature limit for three minutes (adjustable
via UMT, Supply High Temp Alarm Delay) or
more, the unit will go into shutdown mode. The
unit must be manually reset to continue
operation.
Supply Air Temperature High Limit Alarm Delay
If the supply air temperature reaches the Supply
Air Temperature High Limit, this is the time
delay, in minutes, before the unit goes into
shutdown mode and sends a shutdown alarm.
Supply Air Temperature Low Limit
If the supply air temperature falls below this
temperature limit for three minutes or more, the
unit will go into shutdown mode. The unit must
be manually reset to continue operation.
Supply Air Temperature Maximum Cooling Setpoint
This is the maximum supply air temperature that
the unit can reset to when configured for Supply
Temperature With Reset Control and in cooling
mode.
Supply Air Temperature Maximum Heating Setpoint
This is the maximum supply air temperature that
the unit can reset to when configured for Supply
Temperature With Reset Control and in heating
mode.
Supply Air Temperature Minimum Cooling Setpoint
This is the minimum supply air temperature that
the unit can reset to when configured for Supply
Temperature With Reset Control and in cooling
mode.
Supply Air Temperature Minimum Heating Setpoint
This is the minimum supply air temperature that
the unit can reset to when configured for Supply
Temperature With Reset Control and in heating
mode.
Supply Air Temperature Setpoint
If the system does not have a space
temperature sensor, or if one is installed and the
point Force Supply is set to True, then the unit
will control the supply air temperature to this
setpoint.
Supply Fan Furnace Limit Offset
Consult the factory before adjusting this
parameter.
Supply Fan Maximum Speed Setpoint
The maximum speed, as a percentage of design
speed, that the supply fan will be allowed to run.
This setpoint should be used when air balancing
the unit. If more air is needed, the speed can be
increased to 100% of design speed. If less air is
needed, the speed can be reduced toward a
minimum of 50% design speed.
Supply Fan Minimum Speed Setpoint
The minimum speed, as a percentage of design
speed, that the supply fan VFD will be allowed to
run during any supply fan sequence.
Supply Fan Output
Indicates whether the supply fan command is
currently on or off. This is wired to DO1 on the
DDC1 I/O module.
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