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Figure 36: MicroTech III Unit Controller with EC Motor – 208 /230-60-1 Unit Sizes 024-070
Drawing No. 910104890
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.
Legend
Item Description
CC
Compressor - Contactor
CM
Compressor - Motor
COS
Condensate Overflow Sensor
HP
High Pressure Switch
ISO-NC Isolation Valve - Normally Closed
ISO-NO Isolation Valve - Normally Open
LED1
LED Annunciator / Harness
LP
Low Pressure Switch
SLTS
Suction Line Temp Sensor
LWT
Leaving Water Temp Sensor
MIII
MicroTech III Main Board
RAT
Return Air Temp Sensor
RV
Reversing Valve Solenoid
X1 Transformer
_____ Standard Unit Wiring
_ _ _ _ Optional Wiring (by others)
Table B
208V RED
230V ORG
Note:
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.
Entering Water Temperature (EWT) sensor is included with ECM and/or Secondary Electric Heat.
Notes:
1.
Main board jumpers:
JP3 Geothermal
Transformer:
Unused wire to be capped.
www.DaikinApplied.com 29
IM 1049-9
