Daikin Microtech III Operation And Maintenance Manual page 30

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 dia-
gram: Units with factory installed com-
munication 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
MicroTech III Controller
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
FAN
GRN/YEL 97
MOTOR
BLK
BLK/RED-460V
RED-208V
ORG-230V
BLK-575V
YEL 18
Communication
Module
BLK 81
Note: Switch L2/L3 fan
motor wires for
left-hand unit
BLK 1
YEL 2
RED 3
BLK 4
YEL 5
RED 6
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
30
t W
ypICal IrIng
T2
T1
S2
S1
M2
M1
T2
T1
S2
S1
M2
M1
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