www.DaikinApplied.com 36
LARGE VERTICAL WSHP IM 1059-12
t
yPiCal
W
iring
d
iagraMs
MicroTech III controller with I/O expansion module – with waterside
economizer (WSE) 208/230, 460, 575-60-3
1
LED1
SLTS
RV
LED1
GRY 46
BLU 41
BLU 40
RA
T
BRN 54
LED2
IOEX
P
CO
S
BLK 60
BLK 61
SEE NOTE
BLU 21
BRN 55
LED2
T1
TB
1
YEL
RE
D
L1
L2
L3
CM-1
BL
K
L1
T2
L3
L2
L1
SERVICE
&
DISCONNECT
L3
GN
D
L2
YEL 18
JP_
2
JP_
3
JP_
4
JP_
5
JP_
6
JP_
7
JP_
8
H1
H2
N3
N2
N1
L1-3
L1-2
L1-1
H3
H5
H4
H7
H6
H8
H9
TB
2
TEST-1
TB
1
TB
3
RUN PRG
JTAG
BLU 20
LP
2
HP
2
SLTS
2
1
1
1
1
1
JP
1
JP8
JTAG
RV
2
L1
L2
L3
CM-2
BL
K
YE
L
RE
D
YEL 11
RED 12
R1
CC
1
BLK 1
YEL 2
RED 3
BLK 4
YEL 5
RED 6
BRN 52
BRN 53
BLU 42
BLU 43
BLK 62
BLK 63
CC
2
BLU 28
YEL 27
YEL 19
HP
LP
RED 9 (L3)
BLK 7 (L1)
FAN
MOTOR
T3
GRN/YEL 97
YEL 45
YEL
BL
DA
T
LW
T
BLK
BLK/RED-460V
RED-208V
ORG-230V
BLK-575V
X1
CO
E
TO CO
S
EW
T
M
WS
E
BLK/RED-460
V
RED-208V
ORG-230V
BLK-575
V
BL
K
X2
TB
2
YEL89
BLK 81
YEL
BL
U
85
11
10
YEL 8 (L2)
BLK 10
CO
E
TO GRY 46
86
87
R4
2
5
4
R3
2
5
4
BLU
104
R4
YE
L
103
BL
U
10
2
YEL
101
R3
YEL 14
BLU 15
IO Expansion Module
C - 24VAC COMMON
O - W3 - HEAT -3
G - FAN
Y1 - COOL - 1
Y2 - COOL 2
W1 - HEAT - 1
W2 - HEAT - 2
A - ALARM OUTPUT
5 - DC SIGNAL COM
4 - ROOM SENSOR/TO
3 - SETPOINT ADJUST
2 - FAN MODE/HT-CL-AUTO
1 - ROOM SENSOR LED
U - MARK IV - OCC/UNOCC
E - EMER SHTDN INPUT
R - 24VAC
Communication
Module
MicroTech III Controller
24V NO
24VAC COMMON
24V NC
Note: Switch L2/L3 fan
motor wires for
left-hand unit
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
factory 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.
Legend
Item Description
CC1
Circuit 1 Compressor Contactor
CC2
Circuit 2 Compressor Contactor
CM1
Circuit 1 Compressor
CM2
Circuit 2 Compressor
COS
Condensate Overflow Sensor
HP
Circuit 1 High Pressure Switch
HP2
Circuit 2 High Pressure Switch
IOEXP
I/O Expansion Board / Harness
LED1
LED Annunciator / Harness
LED2
LED Annunciator / Harness
*RAT
Return Air Temperature
*LWT
Leaving Water Temp Sensor
LP
Circuit 1 Low Pressure Switch
LP2
Circuit 2 Low Pressure Switch
SLTS
Circuit 1 Suction Line Temp Sensor
SLTS2
Circuit 2 Suction Line Temp Sensor
MTIII
MicroTech III Main Board
R1
Fan Motor Starter
RV
Circuit 1 Reversing Valve Solenoid
RV2
Circuit 2 Reversing Valve Solenoid
TB1
Power Terminal Block
X1
75 VA Transformer
X2
50 VA Transformer
*DAT
Discharge Air Temp Sensor
*EWT
Entering Water Temp Sensor
WSE
Waterside Economizer
TB2
Power Terminal Block
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