Trane Relay Panel - Optional Remote Sensor Connections; HVAC System Connections

18-HD68D1-3 7
Aux2
Relay Panel
Bit Master
Comm
HVAC System
Sensors
Thermostat
and Indoor Unit
Outdoor
Remote
Data
Hot
Co
m
D R
B
Indoor
RS
RS
ODT
ODT
24 Vac Only
24 Vac Only
24 Vac Only
Aux2
Aux1
Aux1
Hum
Hum
BK
PWM
Fan
G
W3 Stg3
W2 Stg2
W1 Stg1
Y1 Stg1
Y2 Stg2
0 SOV
NORM
Dual Fuel
Switch
DUAL
C
D
HVAC System Connections
Terminal Name Description Color Used:
O - SOV Switch Over Valve
Y1 - Stg1 First Stage Compressor
Y2 - Stg2
Second Stage
Compressor
W1 - Stg1 First Stage ID Heating
W2 - Stg2 Second Stage ID Heating
W3 - Stg3 Third Stage ID Heating
G - Fan Indoor Blower
BK - PWM
PWM Signal for indoor
blower modulation
Hum* Humidifier Contact
Hum* Humidifier Contact
Aux 1* Dehumidifier/Ventilation ---
Aux 1* Dehumidifier/Ventilation ---
Aux 2* Dehumidifier/Ventilation ---
Aux 2* Dehumidifier/Ventilation ---
C
Optional Remote Sensor Connections
Terminal Name Description Color Used:
Remote
Indoor
RS
Remote Indoor
temp sensor
ZZSENSAL0400AA
RS
Outdoor
ODT
1 Outdoor temp sensor
BAYSEN01ATEMPA
ODT
B
Thermostat and Indoor Unit Connections
Terminal Name Description Color Used:
D - Data Data
R - Hot 24 V hot
B - Com 24 V common
Aux2
Relay Panel
Bit Master
Comm
HVAC System
Sensors
Thermostat
and Indoor Unit
Outdoor
Remote
Data
Hot
Com
D R
B
Indoor
RS
RS
ODT
ODT
24 Vac Only
24 Vac Only
24 Vac Only
Aux2
Aux1
Aux1
Hum
Hum
BK
PWM
Fan
G
W3 Stg3
W2 Stg2
W1 Stg1
Y1 Stg
1
Y2 Stg
2
0 SO
V
NORM
Dual Fue
l
Switch
DUAL
B
For convenience, you may record the color of each wire
used in the blanks provided.
Note: R & B must receive 24 volts from the indoor unit transformer.
Note: The Relay Panel uses 5 VDC to obtain temperature feedback from
remote sensors. Do not run these sensors in a wiring bundle that contains
24 volts AC. See remote sensor literature for troubleshooting.
1 Wired outdoor temperature sensor must be enabled at the 950 Control.
*Note: Hum & Aux terminals are dry contacts only. Input voltage will need to be
supplied. Refer to humidifier’s installer’s guide. AUX 1 and AUX 2 contact con-
trol requires a 950 control with software version 2.1 or later
Aux2
Relay Panel
Bit Master
Comm
HVAC System
Sensors
Thermostat
and Indoor Unit
Outdoor
Remote
Data
Hot
Com
D
R
B
Indoor
RS
RS
ODT
ODT
24 Vac Only
24 Vac Only
24 Vac Only
Aux2
Aux1
Aux1
Hum
Hum
BK
PWM
Fan
G
W3 Stg3
W2 Stg2
W1 Stg1
Y1 Stg1
Y2 Stg2
0 SOV
NORM
Dual Fuel
Switch
DUAL
D
LEDs