Trane TZEMT500AB32MAA Installation Instructions Manual page 7

System Type A - 1 or 2 Stage Heating with 1 or 2 Stage Cooling
(Note 6)
Outdoor Unit
24VAC Common B
24VAC Return R
(Note 5)
Compressor Stage 1 Y1
Compressor Stage 2 Y2
Note 1 - May be W or W1
Note 2 - May be Y, Y1, or Y
LO
Note 3 - May be Y or Y2
Note 4 - Y2 only found on variable speed
furnace or air handler
Note 5 - R required for 2 stage cooling unit
Note 6 - For 2 Stage Cooling, outdoor unit contains two compressors
Note 7 - The remote sensor feature is available only on the TZEMT500
System Type B - 2 Stage Variable Speed Gas Furnace or Variable Speed Air Handler with 2 Step Cooling
(Note 3, Note 4)
Outdoor Unit
24VAC Common B
24VAC Return R
Compressor Stage 1 Y1
Compressor Stage 2 Y2
Note 1 - Field installed jumper from R to O.
Note 2 - Cut/remove R to BK jumper
Note 3 - For non-communicating variable speed air handler.
(For communicating air handler, use system type A diagram.)
Note 4 - For 2 Step Cooling, outdoor unit contains one 2 stage scroll compressor
Note 5 - The remote sensor feature is available only on the TZEMT500
System Type C - PSC, Variable Speed, or Communicating Air Handler with 1 or 2 Stage/Step Heat Pump
(Note 4, Note 5, Note 6, Note 7)
Outdoor Unit
24VAC Common B
24VAC Return R
X2
O
Compressor Stage 1 Y1
Compressor Stage 2 Y2
Note 1 - May be W or W1
Note 2 - May be Y, Y1, or Y
LO
Note 3 - May be Y or Y2
Note 4 - Applies to 2 step heat pumps matched with communicating air handler only.
All other variable speed air handlers use system type D diagram.
Note 5 - For 2 Stage Cooling, outdoor unit contains two compressors
Note 6 - For 2 Step Cooling, outdoor unit contains one 2 stage scroll compressor
Note 7 - PSC air handler for single stage heat pump only
Note 8 - The remote sensor feature is available only on the TZEMT500
Gas Furnace or Air Handler
24VAC Common B/C
24VAC Return R
Heat Stage 1 W1
(Note 1)
Heat Stage 2 W2
Fan G
Compressor Stage 1 Y1
(Note 2)
Compressor Stage 2 Y2
(Note 3, Note 4)
BK
Gas Furnace or Air Handler
BLUE
24VAC Common B/C
RED
24VAC Return R
WHITE
Heat Stage 1 W1
Heat Stage 2 W2
GREEN
Fan G
YELLOW
Y
LO
Compressor Stage 1 Y
Compressor Stage 2 BK
O
BROWN
(Note 1)
(Note 2)
Remote Temperature Sensor Connections and Operation: (Note 5)
Indoor sensor connected to RS1. Replaces internal sensor. RS2 not connected.
Indoor sensor connected to RS2. Averages temperature with internal sensor. RS1 not connected.
Indoor sensors connected to RS1 and RS2. Averages RS1 and RS2 sensor temperatures.
Outdoor sensor connected to RS2. Reports outdoor temperature to comfort control.
Indoor sensor connected to RS1 and outdoor sensor connected to RS2. RS1 replaces the internal
Air Handler
24VAC Common B/C
24VAC Return R
Heat Stage 1 W1
(Note 1)
O
Fan G
Compressor Stage 1 Y1
(Note 2)
Compressor Stage 2 Y2
(Note 3)
BK
Thermostat Connection
BLUE
24C
RED
24RC
WHITE
24RH
W1 HEAT
GREEN
G FAN
YELLOW
Y1 COMP
Remote Temperature Sensor Connections and Operation:
Indoor sensor connected to RS1. Replaces internal sensor. RS2 not connected.
Indoor sensor connected to RS2. Averages temperature with internal sensor. RS1 not connected.
Indoor sensors connected to RS1 and RS2. Averages RS1 and RS2 sensor temperatures.
Internal sensor is not used.
Outdoor sensor connected to RS2. Reports outdoor temperature to comfort control.
Indoor sensor connected to RS1 and outdoor sensor connected to RS2. RS1 replaces the internal
sensor. RS2 reports the outdoor temperature to comfort control.
Thermostat Connection
JP1: internal RC/RH Jumper
24C
24RC
24RH
W1 HEAT
G FAN
Y1 COMP
Internal sensor is not used.
sensor. RS2 reports the outdoor temperature to comfort control.
Thermostat Connection
BLUE
24C
RED
24RC
WHITE
24RH
W1 HEAT
GREEN
G FAN
YELLOW
Y1 COMP
Remote Temperature Sensor Connections and Operation: (Note 8)
Indoor sensor connected to RS1. Replaces internal sensor. RS2 not connected.
Indoor sensor connected to RS2. Averages temperature with internal sensor. RS1 not connected.
Indoor sensors connected to RS1 and RS2. Averages RS1 and RS2 sensor temperatures.
Internal sensor is not used.
Outdoor sensor connected to RS2. Reports outdoor temperature to comfort control.
Indoor sensor connected to RS1 and outdoor sensor connected to RS2. RS1 replaces the internal
sensor. RS2 reports the outdoor temperature to comfort control.
JP1: internal RC/RH Jumper
Remote Sensors
(Note 7)
RS1
RS1
RS2
RS2
W2/O/B
Y2 COMP
(Note 7)
Jumper
Remote Sensors
(Note 5)
RS1
RS1
RS2
RS2
W2/O/B
Wiring is not
polarized
Y2 COMP
JP1: internal RC/RH Jumper
Remote Sensors
(Note 8)
RS1
RS1
RS2
RS2
W2/O/B
Y2 COMP
Remote
Sensor 1
Remote
Sensor 2
Wiring is not
polarized
Furnace
(Note 2)
Remote
Sensor 1
Remote
Sensor 2
Air Handler
(Note 2)
Jumper
Remote
Sensor 1
Remote
Sensor 2
Wiring is not
polarized
7