Daikin DAR09 Service Instructions Manual page 80

ACCESSORIES WIRING DIAGRAMS
15kw and Above with Two OT/EHR18-60's, Two Stage Electric Heat and Two Stage Thermostat
OT/EHR18-60 #1
EMERGENCY
HEAT
RELAY
OT/EHR18-60 #2
EMERGENCY
HEAT
RELAY
Typical Wiring Schematics for OT/EHR18-60 (Outdoor Thermostat & Emergency Heat Relay).
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS
UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO
DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
BLUE
WHITE
BROWN
BLACK
RED
THERMOSTAT
BLUE
WHITE
BROWN
BLACK
RED
THERMOSTAT
This wiring diagram is for reference only. Not all wiring is as shown above.
Refer to the appropriate wiring diagram for the unit being serviced.
From Air Handler
W3
C G W2
C R W2 O Y
From Outdoor Unit
80
R
C
G
W2
W3
E
R
O
Y