iWorx® MPU2
505-009, Effective: June 30, 2015
33
© 2015 Taco Electronic Solutions, Inc.
CONTROLLER IDENTIFICATION
Once the MPU2 is properly installed and recognized by the Local Control Interface (LCI), the LCI can be used to con-
figure the settings of the controller. This section describes the commands available on the LCI for configuration of the
MPU2, and the meanings and default values for controller parameters. For more information on using the LCI, see the
iWorX LCI Application Guide
.
Inputs
The Inputs screen displays the current values of the MPU2’s inputs. These values cannot be changed.
Outputs
This screen displays the current values of the MPU2’s outputs. These values cannot be changed.
Input
Range
Description
Outside Temp
-29 to 230
°F (-33.9 to 110
°C)
The outside air temperature communi-
cated through the LCI from the ASM con-
troller.
Inside Enthalpy
0.0 to 60.0
BTU/lb. (0.0 to 139.6
kjoule/kg)
Calculated inside air enthalpy.
Outside Enthalpy
0.0 to 60.0
BTU/lb. (0.0 to 139.6
kjoule/kg)
Calculated outside air enthalpy.
Smoke Detector
Normal, Smoke
Status of the smoke detector (SMK).
Fan Status
Off, On
Status of the fan proof switch (FNP)
Low Limit
Normal, Low Limit
Status of the mixed air low limit indication
switch (MLL).
Filter Status
Normal, Dirty
Status of the filter switch (FIL).
Indoor Air Quality
Normal, Alarm
Status of the IAQ alarm sensor.
Occupancy Mode
Occupied, Unoccupied, Bypass
Occupancy mode of controller
Supply Air Temp
-29 to 230
°F (-33.9 to 110
°C
Temperature of the supply air duct.
Mixed Air Temp
-29 to 230
°F (-33.9 to 110
°C)
Temperature of the mixed air plenum.
Return Air Temp
-29 to 230
°F (-33.9 to 110
°C)
Temperature of the return air duct.
Return Air Humidity
0.00 to 100.00%
Humidity reported by the RAH sensor.
Static Pressure
0.00 to 5.00”
W.C. (0 to 1246
Pa)
Static pressure in the supply air duct.
IAQ
0-4000ppm
Reading of the indoor air quality sensor
when defined as Analog.
Output
Range
Description
Mode
Heat,
Cool,
Off,
Fan,
Free Cooling,
Dehumidification,
Shut Down
Current operating mode.
Heat Output
0.00% to 100.00%
Current state of the heating output.
Cool Output
0.00% to 100.00%
Current state of the cooling output.
Economizer Output
0.00% to 100.00%
Current state of the economizer
output.
Fan Output
0.00% or 100.00%
Current state of the fan output.
Bypass Damper Pos
0.00% or 100.00%
Current state of the bypass output.
In Alarm?
On, Off
Alarm indication
