Valent Controls IOM 48 IOM-C1-0616
Part Number 474626
Space Relative Humidity Unoccupied Deadband
Setpoint
Adjusts the threshold the unit uses to determine
when the space does not need dehumidification.
Space dehumidification is not requested when
the space relative humidity is less than
(Unoccupied Space Humidity Setpoint –
Unoccupied Space Humidity Deadband
Setpoint).
Space Reset Deadband
For units using Space Temperature Setpoint
Offset, this pauses the space reset routine when
the space temperature is within the deadband of
the active Space Temperature Setpoint.
Space Static Pressure
Displays the space static pressure reading, in
InWc, as reported by the field-installed space
static pressure transducer. The transducer
sends a 0-10VDC signal that equates to -0.500
to +0.500 InWc. The sensor is wired to U1 of the
DDC2 I/O module.
Space Static Pressure Setpoint
The space static pressure that the system
should maintain. As the space static pressure
drops below this setpoint, depending on the unit
setup, the supply fan speed will increase, the
exhaust fan speed will decrease, or the outdoor
air damper will open to increase the space static
pressure. When the space static pressure is
above this setpoint, depending on the unit setup,
the supply fan speed will decrease, the exhaust
fan speed will increase, or the outdoor air
damper will close to reduce the space static
pressure.
Space Temperature
The temperature of the space is measured by
the field-installed sensor (factory provided, if
ordered) located in the space. This is an IOU
Type III thermistor sensor wired to U4 on the
DDC1 I/O module.
Space Temperature Adjust Disable
Enables or disables the Space Temperature
Adjust feature at the space sensor.
Space Temperature Cooling Setpoint
When a space temperature setpoint offset is
entered, the unit will control to this setpoint when
in the cooling mode.
Space Temperature Heating Setpoint
When a space temperature setpoint offset is
entered, the unit will control to this setpoint when
in the heating mode.
Space Temperature Setpoint
The unit will operate heating and cooling to
maintain this setpoint for the space.
Space Temperature Setpoint Offset
By increasing the offset above zero (default), the
unit will operate with dual setpoints, calculated
as follows:
Space Temperature Heating Setpoint = Space Temperature
Setpoint – (Space Temperature Setpoint Offset/2)
Space Temperature Cooling Setpoint = Space Temperature
Setpoint + (Space Temperature Setpoint Offset/2)
The unit will control to the respective setpoint
when in the heating or cooling mode and will
transition between modes when space
temperature drops below the cooling setpoint or
rises above the heating setpoint.
Example: Space Temperature = 70°F
Space Temperature Setpoint Offset = 4°F
Space Temperature Heating Setpoint = 68°F (70 – (4/2))
Space Temperature Cooling Setpoint = 72°F (70 + (4/2))
SPT Slider
Displays the position of the space temperature
slider.
Supply Air Cooling High Deadband Setpoint
When Supply Air Deadband is enabled and the
unit is cooling, this setpoint defines the amount
the Supply Air Temperature can exceed the
current control setpoint before the control loop
will respond.
Supply Air Cooling Low Deadband Setpoint
When Supply Air Deadband is enabled and the
unit is cooling, this setpoint defines the amount
the Supply Air Temperature can fall below the
current control setpoint before the control loop
will respond.
Supply Air Deadband Enable Setpoint
Allows the Supply Air Temperature to go slightly
above or below the control setpoint with no
correction from the control loop. The amount of
error allowed before correction is determined by
setting the appropriate Supply Air Deadband
Setpoint(s).
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