Lennox International Inc. 021 User Manual
Page 15
EDA INSTALLATION/ SERVICE INSTRUCTIONS
Typical EDA/Heat Pump Wiring Diagram
Figure 13
B4
FAN
Blue
Yellow
Black
K1
1st, cut
yellow wire
here.
yellow wire
here.
Use Wirenuts
*OUTDOOR RELAY
NOT REQUIRED WITH SINGLE-
SPEED OUTDOOR FAN
EDA
Violet
Orange
Purple
Black
Black
Purple
VALVE
ACTUATOR
ACTUATOR
Y
ellow
Y
ellow
2
2nd, rewire
yellow wire
as shown
yellow wire
as shown
7
5
1
3
5
BLACK
PURPLE
BLACK
RED
OUTDOOR
WIRING
(VSM
APPLICATION
ONLY)
Y1Y2 JUMPER − IN FOR
SINGLE− STAGE COOLING;
REMOVED FOR 2−STAGE
COOLING
SINGLE− STAGE COOLING;
REMOVED FOR 2−STAGE
COOLING
INDOOR
UNIT
BLUE
BROWN
DSY1 JUMPER − MUST BE
REMOVED FOR HUMIDITROL
OPERATION
REMOVED FOR HUMIDITROL
OPERATION
SEE CONTROL WIRING BELOW
FOR THERMOSTAT
WONNECTIONS
FOR THERMOSTAT
WONNECTIONS
RO JUMPER − MUST BE
REMOVED FOR HEAT PUMP
APPLICATION
REMOVED FOR HEAT PUMP
APPLICATION
Y1Y2 JUMPER − ONLY
REMOVE IF 2−STAGE COOLING
REMOVE IF 2−STAGE COOLING
BLUE
YELLOW
BLUE (NOT REQUIRED FOR SINGLE STAGE)
BROWN (NOT REQUIRED FOR APPLICATIONS WITHOUT LSOM)
RED
BLACK
PURPLE
SignatureStat
t
THERMOSTAT
INDOOR
UNIT
OUTDOOR
UNIT
EDA
UNIT
TWISTED PAIR
PURPLE
OUTDOOR
SENSOR
(46M98)
BLACK
Control Wiring
BLUE
RED
FAN RELAY (NOT REQUIRED
WITH SINGLE-SPEED
OUTDOOR FAN)
WITH SINGLE-SPEED
OUTDOOR FAN)