Honeywell TH8320 Manual Do Utilizador

5

68-0280—01

4. Position the wallplate over the holes, pulling wires 

through the wiring opening. See Fig. 6.

5. Insert the mounting screws into the holes and tighten.

All wiring must comply with local electrical codes and 

ordinances. 

1. Select set of terminal identifications (Table 1) that 

corresponds with system type (conventional or heat 

pump in Fig. 7). 

2. Loosen the screws for the appropriate system type 

selected; see Table 1. See Table 2 for terminal 

designation descriptions. Insert wires in the terminal 

block under the loosened screw. See Fig. 8.

3. Securely tighten each screw.

4. Push excess wire back into the hole.

5. Plug the hole with nonflammable insulation to prevent 

drafts from affecting the thermostat.

6. See Fig. 9 through 21 for typical wiring hookups.

WALL

MOUNTING 
HOLES

M19916

MOUNTING 
SCREWS (2)

WALL ANCHORS (2)

WIRES THROUGH WALL
AND WIRE SLOT

CONVENTIONAL

SCREW TERMINALS

HEAT PUMP

M19951

Y2

L

E

AUX

S1

S2

Y2

W2

S1

S2

RC

R

O/B

Y

G

C

RC

R

W

Y

G

C

Standard Heat/Cool

Conventional

9, 10

Heat Only

Conventional

11

Heat Only with Fan

Conventional

12

Heat Only (Series 20)

Power to open and 

power to close zone 

valves

Conventional

13

Normally Open Zone 

Valves—Heat Only

Conventional

14

Cool Only

Conventional

15

Standard Multistage up 

to 2 Heat/2 Cool

Conventional

16, 17

Heat Pump with No 

Auxiliary Heat

Heat Pump

18, 19

Heat Pump with 

Auxiliary Heat

Heat Pump

20, 21

M19917