York LX series User Manual

Page 9
24 VAC return
Fan relay
1st stage heat circuit
1st stage compressor relay
2nd stage heat circuit
The LX Thermostat Backplate
G
Y1
Y2
W3
R
W1/O/B
W2
HUM
DEHUM
C
AUX
REMOTE
SENSOR
FAULT
DRY
CONTACT
OUTDOOR
SENSOR
G
Y1
Y2
W3
R
W1/O/B
W2
HUM
DEHUM
C
AUX
REMOTE
SENSOR
FAULT
DRY
CONTACT
OUTDOOR
SENSOR
2nd stage compressor relay
3rd stage heat circuit
Humidifier control circuit
Dehumidifier control circuit
24 VAC common
Aux output
Outdoor sensor
connections
Remote sensor
connections
Dry contact
connections
Fault input
IMPORTANT: This thermostat requires both
R (24 VAC Return) and C (24 VAC Common) be
connected to the backplate terminals.
Installation Instructions
To remove the thermostat
backplate: Using the Finger
Pull Areas, pull the front
housing away from the
backplate.
Front Housing
Backplate
Finger Pull Areas

York LX series Specifications

General

Refrigerant	R-410A
Series	LX
Cooling Capacity	1.5 to 5 tons
Warranty	10-year limited warranty
Sound Level	As low as 72 dBA (depending on model)