Trane TZEMT400BB32MAA Some wire terminals may, not be used, Table 1: Gas or Electric, Table 2: Heat Pump, not be used, Some wire terminals may, CAUTION: EQUIPMENT DAMAGE HAZARD

11 Review the wiring table information.

a.Refer to:

•Table 1 - If you do NOT have a heat pump

•Table 2 - If you have a heat pump

b.Select the correct row based upon the thermostat being replaced, and then circle the wire labels you have.

c.Connect your wires as shown in the New Thermostat Terminals row.

Table 1: Gas or Electric

Some wire terminals may

not be used

(Single Stage or Multistage)

Themostat Being Replaced

Wire Labels

All Brands

C

R

RH

W

W2

G

Y

Y2

X

RC

W1

F

Y1

B

Connects to

New Thermostat Terminals

24COM

24RC

24RH

W1

W2/O/B

G

Y1

Y2

Table 2: Heat Pump

Some wire terminals may

not be used

(Single Stage or Multistage)

Themostat Being Replaced

Wire Labels

Trane/American Standard

COM

R

RH

E

W

O

G

Y

Y2

(Weathertron) or York

C

RC

X2

W1

Y1

B

W2

Y

AUX

Other Brands

COM

R

RH

E

W

O

G

Y

Y2

C

RC

X2

W1

B

F

Y1

X

W2

Y

AUX

Lennox

C

R

RH

E

W

O

G

Y

Y2

X

RC

X2

W1

**R

F

Y1

**VR

W2

**V

Y

AUX

Connects to

New Thermostat Terminals

24COM

24RC

24RH

*W1

W2/O/B

G

Y1

Y2

* Connect two wires to the W1 terminal

**If your existing thermostat has a “V” or “VR” wire label, connect that wire to “24RC” on the new thermostat, then connect the wire labeled “R” to “W2/O/B” on the new thermostat

12 Attach all wires securely to the new thermostat.

Note: A wire must be connected to “24C” to power the thermostat.

a.Use the information from step 11 to match the wires to the correct terminals.

b.Use 1/8” blade screwdriver to secure wires in terminals.

CAUTION: EQUIPMENT DAMAGE HAZARD

Improper wiring can lead to equipment damage. Follow the Terminal Connection information from step 11 carefully to ensure the control is wired properly. After wires are secure, bare wires MUST NOT touch each other.

24RC
G
Y1	24C
Y2	24RH
RS2	W1
RS2	W2/O
HC

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