Cooling Split System And Ay28X079 Evaporator Defrost Control; Heat Pump Split System And Ay28X084 Evaporator Defrost Control - Trane XL19i-APG02-EN Application Manual

Typical wiring when using the evaporator defrost control (EDC) for operation as specified on page 3.

Cooling Split System and AY28X079 Evaporator Defrost Control

2 T T Z 9
R
Y 1
Y
B

Heat Pump Split System and AY28X084 Evaporator Defrost Control

2TWZ9
Red
Yellow / Red
Yellow
X2
Blue
Orange
This diagram indicates the correct wiring for the evaporator defrost control. Refer to the installation manual for complete control wiring.
EDC
Red
Y
EDR-1
Y Low
EDC
Green (G)
White (W1)
White (W2)
EDR
White (W3)
Blue (B)
Orange (O)
Pg. 4
TWE-E
Red (R)
Y low
Y
Green (G)
White (W1)
White (W2)
White (W3)
Blue (B)
TWE-E
(R)
Thermostat
R
Y1
Y2
G
W
W2
B
Thermostat
XT500C
R
Y 2
Y 1
G
W1
X2
B
O