41653_model43558.pmd

14

 

 

 

INSTALLATION

 

14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TABLE A – TERMINAL DESCRIPTIONS (continued)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TERMINAL

FUNCTION

FUNCTION

 

 

 

 

 

 

 

LABELS

(HEAT PUMP MODE)

(MULTI-STAGE MODE)

COMMENTS

 

 

 

 

 

 

E

Emergency heating

DO NOT CONNECT

Activates Emergency heating ONLY when the System Switch is in

 

 

 

 

 

 

 

 

 

Emergency (em) Mode. (Ignored on Multi-stage systems)

 

 

 

 

 

 

O

Reversing valve

Cooling damper

Activates reversing valve or damper in COOL mode.

 

 

 

 

 

 

 

(cooling mode)

 

ALWAYS ON in COOL MODE.

 

 

 

 

 

 

B

Reversing valve

Heating damper

Activates reversing valve or damper in HEAT mode.

 

 

 

 

 

 

 

(heating mode)

 

ALWAYS ON in HEAT MODE.

 

 

 

 

 

 

G

Fan

Fan

Activates the system Fan. (Can be Auto, On, or Program controlled)

 

 

 

 

 

 

L

System monitor

System monitor

Activates System Check LED on the front of thermostat.

 

 

 

 

 

 

 

 

 

(Controlled by the system, not the thermostat.)

 

 

 

 

 

 

C

24VAC common

24VAC common

Common wire of 24VAC transformer. REQUIRED for thermostat operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AL

 

RS1+

Remote temperature

Remote temperature

Positive (+) Terminal for Remote Sensor #1. Polarity MUST be maintained.

 

 

 

 

 

 

sensor 1

sensor 1

 

 

 

 

 

N

 

RS1-

Remote sensor 1 (common)

Remote sensor 1 (common)

Negative (-) Terminal for Remote Sensor #1. Polarity MUST be maintained.

 

 

 

 

TIO

 

 

 

 

 

 

RS2+

Remote temperature

Remote temperature

Positive (+) Terminal for Remote Sensor #2. Polarity MUST be maintained.

 

 

 

 

P

 

 

sensor 2

sensor 2

 

 

 

 

 

O

 

 

 

 

 

 

 

 

 

 

RS2-

Remote sensor 2 (common)

Remote sensor 2 (common)

Negative (-) Terminal for Remote Sensor #2. Polarity MUST be maintained.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

 

 

 

TABLE B

 

 

 

15

 

 

 

HEAT PUMP CROSS-REFERENCE CHART

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXAMPLES OF DIFFERENT SYSTEM TERMINALS

 

 

 

 

 

 

 

 

 

 

 

 

 

CLIMATE

 

 

 

 

 

 

 

 

 

TECHNOLOGY

 

 

 

BRYANT,

RHEEM-

TRANE,

 

 

 

TERMINALS

CARRIER

COLEMAN

COMFORTMAKER

PAYNE

RUUD

WEATHERTRON

YORK

LENNOX (1)

LENNOX (2)

R

R

R

R

R

R

R

R

R

V-VR

Y1

Y or Y1

Y

Y

Y

Y

Y

Y

Y

M

W2

W2

W2

W1

W2

W2

W

W

W1

Y

E

E

E

jumper

E

E

X2

jumper

E

E

 

 

 

to W2

 

 

 

to W2

 

 

O

O

 

O

O

 

O

O

O

R

B

 

B

 

 

B

 

 

 

 

G

G

G

G

G

G

G

G

G

F

L

L or F

L

L or X

L

L

 

X

L

 

C

C

X

C, X, X1

C, C1, X1

X

B

B

C

X

 

 

Note: W2 wires

 

 

 

Note:

 

 

 

 

 

no connection

 

 

 

T wire no

 

 

 

 

 

 

 

 

 

connection

 

 

 

NOTE: If your heat pump thermostat does not have an E wire, use the provided jumper wire to connect the E terminal to the W2 terminal, as shown in three examples above. Refer to the Wiring Diagrams on pages 58-59.