Trane Relay Panel Installation Manual page 7

NORM DUAL
Dual Fuel
Switch
0 SOV
Y1 Stg1
Y2 Stg2
D R B
Data Hot
Com
W1 Stg1
Thermostat
W2 Stg2
and Indoor Unit
W3 Stg3
Fan
G
BK PWM
Hum
Hum
Aux1
Comm
Aux1
Aux2
Bit Master
Aux2
D
18-HD68D1-3
B
D R B
Data Hot
Com
Thermostat
and Indoor Unit
RS
Comm
RS
C
Bit Master
ODT
ODT
NORM DUAL
Dual Fuel
Switch
Relay Panel
0 SOV
Y1 Stg1
Y2 Stg2
W1 Stg1
W2 Stg2
W3 Stg3
Fan
G
BK PWM
Hum
Hum
Aux1
Aux1 LEDs
Aux2
Aux2
Relay Panel
For convenience, you may record the color of each wire
used in the blanks provided.
B
Terminal Name
D - Data
R - Hot
B - Com
Note: R & B must receive 24 volts from the indoor unit transformer.
RS
RS
C
Terminal Name
ODT
RS
ODT
RS
ODT
ODT
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.
D R B
Terminal Name
O - SOV
Data Hot
Com
Y1 - Stg1
Thermostat
and Indoor Unit
Y2 - Stg2
W1 - Stg1
W2 - Stg2
W3 - Stg3
G - Fan
BK - PWM
Comm
Hum*
Bit Master
Hum*
Aux 1*
Aux 1*
Aux 2*
Aux 2*
*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
Thermostat and Indoor Unit Connections
Description
Data
24 V hot
24 V common
Optional Remote Sensor Connections
Description
Remote Indoor
temp sensor
ZZSENSAL0400AA
Outdoor temp sensor
1
BAYSEN01ATEMPA
D
HVAC System Connections
Description
Switch Over Valve
First Stage Compressor
Second Stage
Compressor
RS
First Stage ID Heating
RS
Second Stage ID Heating
Third Stage ID Heating
Indoor Blower
ODT
ODT
PWM Signal for indoor
blower modulation
Humidifier Contact
Humidifier Contact
Dehumidifier/Ventilation
Dehumidifier/Ventilation
Dehumidifier/Ventilation
Dehumidifier/Ventilation
Color Used:
Color Used:
Color Used:
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