Installation Guide

69-299—0

6

HEaT puMp

Fig. 12. Zone panel wiring—heat pump with electric auxiliary heat.

Use the following diagram for wiring a heat pump with electric auxiliary heat.

NOTE: You can use a conventional thermostat for a heat pump system; however, em heat can only be controlled by

heat pump thermostats. The diagram below shows a heat pump thermostat used with a heat pump system.

1

2

1

2

1

2

Rc

R

C

E

AUX

Y

G

O/B

L

Rc

R

C

E

AUX

Y

G

O/B

L

Rc

R

C

E

AUX

Y

G

O/B

L

1 ALTERNATIVELY LABELED W2 ON SOME THERMOSTATS.

2 FOR THERMOSTATS WITH SEPARATE O AND B TERMINALS,

ATTACH O FOR COOL CHANGEOVER OR ATTACH B

FOR HEAT CHANGEOVER.

3 IF HVAC EQUIPMENT USES THE SAME SOURCE OF HEAT FOR

AUXILIARY AND EMERGENCY HEAT, JUMPER W1/E AND W2.

M4 OPEN

M6 CLOSED

M1 COMMON

M28020

R

C

L1

(HOT)

L2

AIR

HANDLER

FAN RELAY

EM. HEAT

AUX. HEAT

G

Y

24 VOLT TRANS.

C

R

E

W2

C7735A1000

DATS

HEAT PUMP

Y

C

R

DEDICATED

TRANSFORMER

ARD OR ZD DAMPER SPRING-OPEN POWER-CLOSED

ARD OR ZD DAMPER SPRING-OPEN

POWER-CLOSED

RRD OR MARD DAMPER POWER-OPEN

POWER-CLOSED

REVERSING VALVE

RH

RC

W1/E

W2

Y1

Y2

G

O

B

DS/BK

HZ322

HEAT 1

HEAT 2

COOL 1

COOL 2

FAN

PURGE

EM HEAT

ZONE 1

ZONE 2

ZONE 3

EMERGENCY

HEAT

M1

M4

M6

R

C

W1/E

W2

Y1

Y2

G

O/B

L

Zone

1

DAMPER

THERMOST

AT

M1

M4

M6

R

C

W1/E

W2

Y1

Y2

G

O/B

L

Zone

2

DAMPER

THERMOST

AT

SENSOR

DATS

DATS

EQUIPMENT

R

C

POWER

M1

M4

M6

R

C

W1/E

W2

Y1

Y2

G

O/B

L

Zone

3

DAMPER

THERMOST

AT

3

A

B

C

D

WIRELESS

ADAPTER

WIRELES

S

CONNECT

POWER

THM4000R

CONNECTED

WIRELESS SETUP