iWorx® MPU2
36
505-009, Effective: June 30, 2015
© 2015 Taco Electronic Solutions, Inc.
MPU Settings
Displays all of the settings for this category and provides access to edit these parameters from a single screen.
Staged Heating/Cooling
Displays all of the settings for this category and provides access to edit these parameters from a single screen.
Modulated Heating/Cooling
Displays all of the settings for this category and provides access to edit these parameters from a single screen.
Setting
Range
Default
Description
Changeover Time
0 to 255 min
5 min
Minimum amount of time between
heating and cooling.
Zone Limit
0 to 32
1
Minimum number of zone demands
required before heating or cooling
is enabled.
Setpoint
Range
Default
Description
Stages
0 to 4 (cooling)
0 to 2 (heating)
4
2
Number of stages controlled. Set to
zero to disable heating or cooling.
Control Band
0 to 10
°F
(0 to 5.6
°C)
1.0
°
F
(0.6 °C)
Value used to modify the calcu-
lated heating and cooling setpoints
to form the temperature range in
which local heating or cooling is
enabled.
Stage Time
0 to 255
min
5 min
The rate at which stages are
sequenced.
Stage Delay Thresh
0 to 100%
99%
Modulated threshold that must be
surpassed before the next stage
may be turned on.
Modulating Stage
No Mod Stage,
Stage 1 Mod,
Stage 2 Mod
No Mod Stage
Stage with modulated output
Setting
Range
Default
Description
Kp
0.00 to 100.00%
(per
°F) 5.00%
Proportional
gain
of
the
cooling
P+I
control loop.
Ki
0.00 to 100.00%
0.05%
Integral gain of the cooling P+I
control loop.
Out Min
0.0 to 10.0
V
0.0
V
Minimum output voltage for modu-
lated heating or cooling.
Out Max
0.0 to 10.0
V
0.0
V
Maximum output voltage for modu-
lated heating or cooling. If set to 0,
Modulation is disabled.
