Daikin Microtech III Operation And Maintenance Manual page 29

MicroTech III controller with I/O expansion module – with waterside economizer
208/230, 460, 575-60-3
Note: Wiring diagrams are typical. For the latest drawing
version refer to the wiring diagram located on the inside of
the controls access panel of the unit.
Gray tinted areas in the wiring diagram: Units with fac-
tory installed communication module include Discharge
Air Temperature (DAT) and Return Air Temperature (RAT)
sensors shipped loose and are field installed. The Leaving
Water Temperature (LWT) sensor is factory installed.
BLU 20
E - EMER SHTDN INPUT
U - MARK IV - OCC/UNOCC
1 - ROOM SENSOR LED
2 - FAN MODE/HT-CL-AUTO
3 - SETPOINT ADJUST
4 - ROOM SENSOR/TO
5 - DC SIGNAL COM
R - 24VAC
A - ALARM OUTPUT
W2 - HEAT - 2
W1 - HEAT - 1
Y2 - COOL 2
Y1 - COOL - 1
G - FAN
O - W3 - HEAT -3
C - 24VAC COMMON
24VAC COMMON
24V NC
24V NO
BLK 60
BLK 61
BLU 40
BLU 41
IO Expansion Module
OM 1239
BLK/RED-460V
RED-208V
ORG-230V
BLK-575V
MicroTech III Controller
Communication
Module
GRN/YEL 97
FAN
MOTOR
Note: Switch L2/L3 fan
motor wires for
left-hand unit
BLK
YEL 18
BLK 1
YEL 2
RED 3
BLU 21
BRN 54
BRN 55
BLK 4
YEL 5
RED 6
BLK 81
29
t W
ypICal
Notes: 1. "Run/Prg" Jumper to be in "Run"
position for normal operation
* Leaving Water (LWT), Discharge
Air (DAT) and Return Air
Temperature (RAT) sensors are
field installed.
_ _ _ _
Denotes optional feature
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