Taco Electronic Solutions iWorx MPU2, Application Manual

Page: 37 / 42

iWorx® MPU2
505-009, Effective: June 30, 2015 37
© 2015 Taco Electronic Solutions, Inc.
Floating SP Heating/Cooling
Displays all of the settings for this category and provides access to edit these parameters from a single screen.
Economizer
Displays all of the settings for this category and provides access to edit these parameters from a single screen.
Free Cooling
Displays all of the settings for this category and provides access to edit these parameters from a single screen.
Setting Range Default Description
Kp 0.00 to 100.00% per °F 5.00% Proportional gain of the P+I control
loop.
Ki 0.00 to 100.00% 0.05% Integral gain of the P+I control
loop.
Travel Time 0.0 to 600 seconds 0 seconds Total time it takes for the valve to
travel from fully closed to fully
open. If set to 0 floating point is dis-
abled.
Deadband 0.0 to 100.00% 10% The desired setpoint must be this
far or greater from the actual posi-
tion before modulating the actuator.
Setting Range Default Description
Type Disabled,
2 St
Unocc On,
2 St Unocc Off,
Mod Unocc. On,
Mod Unocc. Off
Disabled Type of Economizer: Disabled, Two
State and ON when unoccupied,
Two State and OFF when unoccu-
pied, Modulated and ON when
unoccupied or Modulated and OFF
when unoccupied.
Setpoint 40.00 to 70.00 °F
(4.44 to 21.11 °C)
55.00 °F
(12.78
°C)
Setpoint used for controlling the
economizer.
Min Fresh Air 0.00 to 100.00% 10.0% Minimum fresh air position for the
modulated economizer.
Kp 0.00 to 100.00% (per °F) 5.00% Proportional gain of the econo-
mizer’s P+I control loop.
Ki 0.00 to 100.00% 0.05% Integral gain of the economizer’s
P+I control loop.
Min AO Voltage 0.0 to 10.0 V 0.0 V Minimum output voltage for the
modulated economizer.
Max AO Voltage 0.0 to 10.0 V 10.0 V Maximum output voltage for the
modulated economizer.
Setting Range Default Description
Type Rtn Air Humidity,
Global Humidity,
Dry Bulb Temp Rtn Air Humidity Type of free cooling comparison to
be performed.
Enthalpy Offset 0.0 to 60.0 BTU/lb
(0.0 to 139.6 kjoule/kg) 5.0 BTU/lb
(11.6 kjoule/kg) Difference between inside enthalpy
and outside enthalpy that enables
or disables the economizer.
Dry Bulb Offset 0.0 to 20.0 °F
(0.0 to 11.1
°C)
5.0 °F
(2.78
°C)
Difference between return temper-
ature and outside temperature that
enables or disables the econo-
mizer.