IM 1267-7 • PRECISELINE AIR HANDLER 56 www.DaikinApplied.com
Wiring diagrams are typical, always defer to the wiring diagram provided with the unit.
Legend: (Devices may or may not be on unit)
ACT Mixing Box Damper Actuator PB1 Main Power Distribution Block
COS Condensate Overflow Switch/Sensor PB2 Electric Heat Power Distribution Block
DAT Discharge Air Temperature Sensor PB3 24VAC Power Distribution Block
DS Disconnect Switch TB4 EC Motor Control Terminal Block
EB MicroTech III I/O Expansion Board TB5 Intermediate Electric Heat Terminal Block
EWT Entering Water Temperature TB6 No Controls Terminal Block
FM1-2 Fan Motor RAT Return Air Temperature Sensor
FRZ Freeze Alarm Switch R1-2 Electric Heater Power Relay
FSW Fan 3-Speed Switch R3 Electric Heater Control Relay
G075 Quick Connect Splice TS1-2 Thermal Switch (Intermediate Electric Heat)
HTR1-4 Electric Heater Elements TS3 Thermal Switch (Automatic Change Over)
LVB Low Voltage Control Board TR Control Transformer
MIII MicroTech III Control Board VSV1-2 Coil Valve Actuator (Primary or Secondary)
NCB Network Communication Board Wxxx Wire
OAT Outside Air Temperature Sensor WHxxx Wire Harness
OHA Automatic High Temp Cutout Switch WPxxx Wire Plug
OHM Manual High Temp Cutout Switch WNxxx Wire Nut
Hot Wire Colors
480V = BLK/RED
575 = BLK
MMP/Fuse
575V = Fuse
208/240/480V = MMP
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