Installing your thermostat. Honeywell RTH6580, RTH6580WF, RTH6500WF Wi-Fi Series

Installing your thermostat

You might need the following tools to install this thermostat:

• No. 2 Phillips screwdriver

• Small pocket screwdriver

• Pencil

• Level (optional)

• Drill and bits (3/16” for drywall,

7/32” for plaster) (optional)

• Hammer (optional)

• Electrical tape (optional)

1 Switch OFF power to your heating/cooling system.

Important!

To protect your equipment, switch OFF the power to your heating/ cooling system at the breaker box or the system switch.

or

Circuit breaker box

Heating/cooling system power switch

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Installing your thermostat

2 Remove old thermostat faceplate and leave wires connected.

2a Take a picture of the wire connections for later reference.

2b If no wire is connected to a terminal labeled C or no C terminal exists on the old thermostat, view the

Alternate Wiring videos at wifithermostat.com/videos

If you have an older thermostat with a sealed mercury tube, turn to page 2 for proper disposal instructions.

C

C

Important!

C wire is required and is the primary power source for your thermostat. Without a C wire, your thermostat will not power up.

Terminal designation

MCR33823

Installing your thermostat

3 Label wires.

Do not label by wire color.

Use the supplied sticky tags to label each wire as you disconnect it.

Label wires according to the old thermostat terminal designations, not by wire color.

Note:

If no tag matches a wire terminal label, write the terminal label on a blank tag.

4 Remove wallplate.

Remove the old wallplate from the wall after all wires have been labeled and disconnected.

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C

C

Sticky tags

Blank sticky tags

MCR31537

Terminal designation

Installing your thermostat

5 Separate Wi-Fi thermostat and its wallplate.

On your new thermostat, grasp the finger holds on the top and bottom of the wallplate with one hand and the thermostat (front) with the other hand.

Pull pieces apart.

Thermostat

PULL HERE

TO REMOVE

Finger holds

11

PULL HERE

TO REMOVE

Wallplate (back view)

M33856

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Installing your thermostat

6 Mount wallplate for Wi-Fi thermostat.

Mount your new wallplate using screws and anchors included with the thermostat.

If necessary:

Drill 3/16-in holes for drywall.

Drill 7/32-in holes for plaster.

Note:

You may be able to use your existing wall anchors. Hold the wallplate up to the existing anchors to check for alignment

Wallplate

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MCR33857

Installing your thermostat

Important!

The Wi-Fi thermostat requires a C wire to operate. The C, or common, wire brings 24 VAC power to the thermostat. Many older mechanical or battery operated thermostats do not require a C wire. If you don’t have a C wire, try:

• Looking for an unused wire that is pushed into the wall. Connect that wire to C and check that it is connected to the 24 VAC common at your heating/cooling system.

Note:

Not all heating/cooling systems label the 24 VAC common C. Check your system manual or contact the manufacturer to find out which terminal is the 24 VAC common.

View the Alternate Wiring videos at wifithermostat.com/videos

Wiring

For

conventional

heating/cooling systems (natural gas, oil or electric furnace, air conditioner), see page 14. See “Glossary” on page 64 for further definition.

For a

heat pump

system, see page 15. See “Glossary” on page 64 for further definition.

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Installing your thermostat

Wiring (conventional system)

7A Wire the Wi-Fi thermostat to your conventional system.

a Starting with the C Wire, match the sticky tag on the wire to the terminal labels.

You must have a C wire. See page 13.

b Loosen screw, insert wire on inside edge of terminal, then tighten screw.

c Verify wire is firmly secured by gently pulling on wire. d Repeat steps a–c for all other wires.

e Push any excess wire back into the wall opening after all wires are installed.

f Continue to page 20.

Labels don’t match?

See alternate wiring key on pages 16–17.

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14

Remove metal jumper

only

if you have both

R and RC wires

G W

K Y2 W2 G W

C

C

K L AUX/E

G O/B C

Y

R

Y R RC

CONVENTIONAL

Y R RC

HEAT PUMP

MCR33878

Note:

The wiring for your application might be different from the shown above.

Installing your thermostat

Wiring (heat pump system only)

Labels don’t match?

See alternate wiring key on pages 18–19.

7B Wire Wi-Fi thermostat to your heat pump.

a Starting with the C Wire, match the sticky tag on the wire to the terminal labels.

You must have a C wire. See page 13.

b Loosen screw, insert wire on inside edge of terminal, then tighten screw.

c Verify wire is firmly secured by gently pulling on wire. d Repeat steps a–c for all other wires.

e Push any excess wire back into the wall opening after all wires are installed

.

f Continue to page 20.

Aux

G O

K L

AUX/E

G O/B C

Y R

Y R RC

HEAT PUMP

MCR33877

Note:

If old thermostat has separate wires on

AUX and

E, place both wires into the E/AUX terminal.

If old thermostat has wire on

AUX with a jumper to E, place wire on

E/AUX terminal. No jumper is required.

15

Note:

The wiring for your application might be different from the wiring shown above.

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Installing your thermostat

Alternate wiring (conventional system)

Use this if your wire labels don’t match the terminal labels.

Note:

You must have a C wire or equivalent.

See page 13.

Y2 W2 G

F

W

W1

H

C

X

B

C1

Y

Y1

M

2

R

RH

4

V

RC

R

1

K Y2 W2 G W C Y R RC

3

CONVENTIONAL

MCR33885

See key to

1

–

3 on page 17.

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Installing your thermostat

Alternate wiring key (conventional system)

1

2

3

Do not use K terminal. For future use.

If your old thermostat had both R and RH wires, remove metal jumper.

Connect the R wire to the RC terminal, and the RH wire to the R terminal.

Remove metal jumper connecting R and RC only if you must connect both

R and RC.

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Installing your thermostat

Alternate wiring (heat pump system only)

Use this if your wire labels don’t match the terminal labels.

Note:

You must have a C wire or equivalent.

See page 13.

L

F

2

E AUX

X

X2

W

W1

W2

G

F

3

4

O

H

B

4

C

X

B

5

Y

Y1

M

6

R

V

VR

RC

R

1

7

K L

AUX/E

G O/B

C

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18

Y R RC

HEAT PUMP

MCR33886

See key to

1

–

7 on page 19.

Installing your thermostat

Alternate wiring key (heat pump system only)

3

4

1

2

5

6

7

Do not use

K terminal. For future use.

If old thermostat has separate wires on

AUX and E, place both wires into the E/AUX terminal. If old thermostat has wire on AUX with a jumper to E, place wire on E/AUX terminal. No jumper is required.

If your old thermostat had an

O wire and not a B wire, attach the O wire to the O/B terminal.

If your old thermostat had separate O and B wires, attach the B wire to the C terminal. If another wire is attached to the C terminal, check wifithermostat.com for help. Attach the O wire to the

O/B terminal.

If your old thermostat had separate Y1, W1 and W2 wires, check wifithermostat.com for help.

If your old thermostat had both V and VR wires, check wifithermostat.com for help.

Leave metal jumper between R and RC terminals in place.

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Installing your thermostat

8 Insert quick reference card.

Fold quick reference card along score lines, and slide it into the slot on the back of the thermostat.

MCR33916

Quick reference card

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Back of thermostat

MCR33858

Installing your thermostat

9 Attach thermostat to wallplate.

Align the thermostat to the wallplate and then snap into place.

21

HOLD

M33860

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Installing your thermostat

10 Switch heating/cooling system ON.

Important!

10a Verify that the C wire is connected at the thermostat and at the heating/cooling system.

10b Make sure the heating/ cooling system door is firmly secured.

10c Switch power back ON for your heating/cooling system at the breaker box or its power switch.

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or

Circuit breaker box system power switch

Installing your thermostat

11 Set clock to current day and time.

11a Press s

or t

to set clock.

11b Press

Set Day

.

11c Press s

or t

to select the day of week.

11d Press

Done

to save.

(Press and hold a st

button to quickly change a setting.)

23

HOLD

MCR33908

HOLD

MCR33909

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Installing your thermostat

12 Determine your heating/cooling system type.

Important!

Heating/cooling system type must be set so that your thermostat operates properly and does not damage your system.

12a If your system type is conventional single stage (natural gas-powered single stage with a/c), continue to “Connecting to your Wi-Fi network” on page 26.

12b

If your system is:

• Conventional multistage heat and cool

• Any type of heat pump

• Hydronic

If you are not sure of your heating/cooling system type or have other questions, go to wifithermostat.com/support

• Other

You MUST change the system type by setting system function 1. See page 48 to match your thermostat to your system type.

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Installing your thermostat

Congratulations! Your thermostat is operational.

13 Test your thermostat

13a Press the

System

button to change to heating or cooling and begin operation.

13b For remote access to your thermostat, continue to “Connecting to your Wi-Fi network” on page 26.

MCR33880

Heating/cooling system not turning on? Refer to page 62 or FAQ at wifithermostat.com/support

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