Lennox L7742U Programming And Application Manual page 34

Wiring Diagrams
Thermostat wiring connections with various units, including dual fuel, zone control, and applications that include the Humidi-
®
trol Enhanced Dehumidification Accessory (EDA). See figures 18 and 19.
Figure 18. Typical Condensing Unit/Humiditrol
506061−01 06/08
RED
PUR
BLK
EDA UNIT
FAN
RELAY
YEL
BLU
BLK
BRN
Y1 Y2 JUMPER − IN FOR
SINGLE− STAGE COOLING;
OUTDOOR
REMOVED FOR 2−STAGE
UNIT
COOLING
NOTES −
/1\ NOT REQUIRED FOR APPLICATIONS WITHOUT LSOM
/2\ NOT REQUIRED WITH SINGLE-SPEED OUTDOOR FAN)
/3\ NOT REQUIRED FOR SINGLE STAGE
Page 34
OUTDOOR
SENSOR
(X2658)
RED
BLK
PUR
INDOOR
THERMOSTAT
UNIT
®
Accessory Wiring Diagram
L7742U