OM 1239
24 www.DaikinApplied.com
M
ICro
t
eCh
III u
nIt
C
ontroller
Figure 12: MicroTech III board to digital room temperature sensor wiring
Control Board
MicroTech III Board
I/O Expan-
sion Module
Terminal Block
Label
TB2-1
TB1-1
TB1-2
TB1-3
TB1-4
TB1-5
TB3-1
TB3-2
TB1-1
Description
24V
AC
Status LED
Output
Fan & Unit
Mode Switches
Setpoint Adjust
Room T
emp
Sensor
& T
en
-
ant Override
DC Signal
Common
Emergency
Shutdown Input
Unoccupied
Input
Humidistat (De
-
humidification/
WSE) Signal
Input
Terminal Label
R
1
2
3
4
5
E
U
1
Typical Wiring
Terminal Label
R (24VAC)
1 (ST)
2 (FM)
3 (SP)
4 (UTS)
5 (GND)
6 (FC)
E
U
DH
Description
24V
AC
Unit Status
Output
Fan & Unit
Mode
Setpoint Adjust
Room T
emp
Sensor
& T
en
-
ant Override
DC Signal
Common
Fan Speed Se
-
lect - Fan Coil
V
ersion Only
Emergency
Shutdown
Unoccupied
Dehumidifica
-
tion
Sensor
Digitally Adjustable Room Temperature Sensor (Part No . 910121754)
Figure 13: MicroTech III board & I/O expansion module to field supplied room temperature sensor wiring
Control Board
MicroTech III Unit Control Board
I/O Expansion Module
Terminal Block
Label
TB2-1
TB1-1
TB1-2
TB1-3
TB1-4
TB1-5
TB3-1
TB3-2
TB1-1
TB1-2
Description
24V
AC
Unit Status Output
Fan & Unit Mode
Setpoint Adjust
Room T
emp
Sensor
& T
enant
Override
DC Signal Common
Emergency Shut
-
down Input
Unoccupied Input
Dehumidification
Input
Humidistat Source
V
oltage (24V
AC)
Terminal Label
R
1
2
3
4
5
E
U
1
Typical Wiring
Terminal Label
X
X
X
X
Description
Room
T
emp Sensor
,
10K Ohm
A
TP
Curve Z
or equivalent
DC Signal Common
Dehumidification Output
Dehumidification
Source V
oltage
Sensor
Field Supplied Room Temperature Sensor