Daikin DAR09 Service Instructions Manual page 79

ACCESSORIES WIRING DIAGRAMS
EMERGENCY
HEAT
RELAY
EMERGENCY
HEAT
RELAY
Note:
When using a Thermostat with only one
stage for electric heat (W2), tie white and
brown wires from air handler together.
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.
10kw and Below, One Stage Electric Heat
BLUE
WHITE
BROWN
BLACK
RED
THERMOSTAT
OT/EHR18-60
15kw and Above, Two Stage Electric Heat
BLUE
WHITE
BROWN
BLACK
RED
THERMOSTAT
OT/EHR18-60
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
C G W2
C R W2 O
From Outdoor Unit
From Air Handler
C G W2 W3
C R W2 O
From Outdoor Unit
79
R
C
G
W2
E
R
O
Y
Y
SEE NOTE
R
C
G
W2
E
R
O
Y
Y