Lennox EL296UHVX Series Unit Information page 29

HUM
LINE 1
7 SEGMENT LED
FLAME SENSE
DIAGNOSTIC
PUSH BUTTON
DIP SWITCHES
OUTDOOR AIR
SENSOR
TERMINALS
DISCHARGE AIR
SENSOR
TERMINALS
TB83
icomfortt
COMMUNICATING
OUTDOOR
EQUIPMENT
TB84
icomfortt
COMMUNICATING
INDOOR
THERMOSTAT
TB83 icomfortt Communicating Outdoor Equipment
R = 24VAC
I + = DATA HIGH CONNECTION
I - = DATA LOW CONNECTION
C = 24VAXC COMMON
TB84 icomfortt Communicating Indoor Thermostat
R = 24VAC
I + = DATA HIGH CONNECTION
I - = DATA LOW CONNECTION
C = 24VAXC COMMON
1/4" QUICK CONNECT TERMINALS
HUM = UNPOWERED NORMALLY OPEN (DRY) CONTACTS
XMFR = 120 VAC OUTPUT TO TRANSFORMER
LI = 120 VAC INPUT TO CONTROL
ACC = 120 VAC OUTPUT TO OPTIONAL ACCESSORY
NEUTRALS = 120 VAC NEUTRAL
INTEGRATED CONTROL
R I + I - C R I + I - C
W1 W2 G Y2 Y1 C
NON-COMMUNICATING
24V TERMINALS
FIGURE 4
Page 29
ACC
HS/ CAI
INDOOR
BLOWER
CONNECTOR
W915 Y1 TO Y2
2 STAGE COMPR
W951 R TO O
HEAT PUMP
W914 R TO DS
DEHUM OR
C R DH L O DS
THERMOSTAT CONNECTIONS (TB1)
DS = DEHUMIDIFICATION SIGNAL
W2 = HEAT DEMAND FROM 2ND STAGE T/STAT
W1 = HEAT DEMAND FROM 1ST STAGE T/STAT
R = CLASS 2 VOLTAGE TO THERMOSTAT
G = MANUAL FAN FROM T'STAT
C = THERMOSTAT SIGNAL GROUND CONNECTED TO
TRANSFORMER GRD (TR) & CHASIS GROUND (GRD)
Y1 = THERMOSTAT 1ST STAGE COOL SIGNAL
Y2 = THERMOSTAT 2ND STAGE COOL SIGNAL
O = THERMOSTAT SIGNAL TO HEAT PUMP
REVERSING VALVE
DH = DEHUMIDIFICATION OUTPUT COMMUNICATING
THERMOSTAT ONLY
L = USE ONLY WITH A COMMUNICATING THERMOSTAT
AND A NON-COMMUNICATING OUTDOOR UNIT
NEUTRAL
12 PIN LOW
VOLTAGE
CONNECTOR
HARMONY