Google Nest Protect User manual

Let’s get started
Commençons
Google Nest Protect (Wired 120V ~ 60Hz)
Smoke and carbon monoxide alarm
User’s Guide
Google Nest Protect (laire 120 V ~ 60 Hz)
Aveisseur de fumée et de monoxyde de carbone
Guide de l’utilisateur

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English
Wired installation should be done in accordance with the Canadian Electrical Code and any other
requirements applicable in your area.
Don’t want to install your Nest Protect yourself?
If you’d like a professional to install your Nest Protects, contact one of our Nest Pros.
Your Nest Pro will:
• Remove your old smoke alarm.
• Install your Nest Protects.
• Connect your Nest Protects to Wi-Fi or help you connect them yourself.
• Ensure all Nest Protects are wirelessly interconnected.
• Give you a quick demo and answer your questions.
Find a Nest Pro installer near you at g.co/nest/install

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Table of contents
Meet your Nest Protect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Setup and installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Location in your home . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Placement on the ceiling or wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Heads-Up and Emergency Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Daily Use and Emergency Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
General Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Visit g.co/nest/protectbasics to learn more about installing, using and
troubleshooting Nest Protect.

Inside the box you’ll nd:
Nest Protect Backplate 4 mounting screws 120V connector
3 wire connectors
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English
Meet your Nest Protect
Nest Protect is designed to detect smoke and carbon
monoxide in a residential environment.
It has multiple sensors to help it understand what’s
happening in your home, including a Split-Spectrum
Sensor to detect a wide range of slow-smoldering
and fast-aming res.
This guide covers the installation of Nest Protect
(Wired) - Model number A12.
Requirements
You need Wi-Fi, an iOS or Android phone or tablet,
and a free account in order to use some Nest Protect
features: spoken room names, wireless mobile
notications, and soware updates. During setup,
Wi-Fi and a free account are required for wireless
interconnect and room naming. Aer all the Nest
Protects in your home are connected, they can
communicate with each other without Wi-Fi.

5.3 in
(13.5 cm)
1.5 in
(3.9 cm)
AC connector pins for the 120V
connector.
The horn enables Nest
Protect to ale you with
a loud emergency sound.
The speaker allows Nest
Protect to speak with
a human voice.
Push the buon to hush
alarms or run a test.
The light ring changes
colour to ale you.
Micro-USB connector
(not for normal use).
Baery compament: Three
AA Energizer® Ultimate Lithium
baeries (L91).
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GET IT ON
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English
The installation of a smoke and CO alarm should be
made by a qualied technician, and all wiring used
to install this alarm should be made in accordance
with CSA C22.1, Canadian Electrical Code, Pa I,
Safety Standard for Electrical Installations and/or
applicable codes in your local jurisdiction.
Refer to the included Safety and Warranty document
for regulatory information and additional precautions.
Setup and installation
(Professional installation recommended) 1. Get the Nest app
Before you install your Nest Protect on the ceiling
or wall, you’ll need to set it up with the Nest app.
Download the app from the Apple App Store or
Google Play and create a free account. You can
use a phone or tablet for setup.

Already added New
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Tip: Lay everything out on a table for easy setup.
2. Set up Nest Protect
The Nest app will guide you through each step: scanning
the Nest Protect QR code, connecting it to the internet,
and connecting it to other Nest Protects in your home.
Go to g.co/nest/installprotect to watch the video.
3. Have more Nest Protects?
The Nest app will ask if you have more Nest Protects
to set up. If you do, it’ll take you through a faster
setup. Be sure to keep all your Nest Protects together
until they’re all set up and ready to be installed.
Tip: Your Nest Protect came packed in a plastic
cover. Keep the cover on so your Nest Protect
stays clean until you install it.

Breaker box
WARNING
ELECTRICAL SHOCK HAZARD
Failure to turn o the power may result in serious
electrical shock, injury and death.
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English
5. Turn o power
Protect yourself and avoid blowing a fuse. Switch o
the correct circuit breaker for the room where you
are installing Nest Protect or remove the fuse from
the fuse box.
4. Test before you install
Once you’re done seing up all of your Nest Protects,
make sure they’ve been added to your account.
Push the buon on one Nest Protect and follow the
instructions. All of your Nest Protects should speak
up. Now you can install them on the ceiling or wall.
Tip: To double check Nest Protect’s room name, press
the buon once. You’ll hear the location that you
assigned to it during setup. It’ll say something like,
“Ready in the bedroom.”

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7. Remove the old backplate
Unscrew the backplate from the electrical box. Save
the screws to install the Nest Protect backplate later.
6. Remove your old smoke alarm
To prevent electrical shock, make sure the green
power light is o on the alarm. You may have to twist
the alarm to release it. Carefully remove it to keep
from damaging your ceiling or wall.
Tip: Your old smoke alarm might make a loud noise
when you disconnect it.

BEDROOM MASTER
BEDROOM
LIVING/
FAMILY
ROOM
KITCHEN
GARAGEBASEMENT
HALL
ATTIC
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English
Location in your home
Smoke alarms should be installed in the
following areas:
• On every oor, including nished aics
and basements.
• Inside and outside every sleeping area.
• At the top of the rst- to second-oor
stairway and on the basement ceiling near
the entry of the stairs.
• In homes with more than 1,000 square
feet (93 m2) on one level, additional alarms
may be required.
Nest Protect should be installed at least 10 feet
(3 m) away from cooktops or cooking appliances.
Nest Protect should NOT be installed in unnished
aics or garages.

White:
Neutral line
Black:
Power line
Bare
copper
Red/orange/yellow:
Interconnect
3/8 in (1 cm)
The exposed wire should be straight.
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9. Aach the Nest connector
Hold the white wire ends together, cap them with a
wire connector and twist clockwise until it’s secure.
Do the same with the black wires. There’s no need for
the red/orange/yellow wire. Simply cap it with a wire
connector and twist until secure.
8. Remove the old connector
Unscrew the wire connectors to detach the 120V
connector from your old smoke alarm.

Figure 2
Figure 3
12 in
(30.5 cm)
Maximum
BEST
ON CEILING
CEILING
WALL
OKAY
ON WALL
Figure 1
NOT IN
THIS AREA
ANYWHERE IN
THIS AREA
NOT IN
THIS AREA
ANYWHERE IN
THIS AREA
4 in
(10 cm)
4in
(10 cm)
3ft
(0.9 m)
3ft
(0.9 m)
3ft
(0.9 m)
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English
Placement on a sloped ceiling
If the slope of your ceiling is more than 19 degrees,
there’s a triangle of dead air below the peak that
should be avoided. To check where the dead air
ends, think of the peak of your ceiling as the top
point of the triangle. The side of the triangle is
your wall. The base of the triangle connects the
wall to the slope of your ceiling. When the base
is 90 cm (35.4 in) long, you get the outline of the
dead air. Your smoke alarm should be installed
on the ceiling or wall not more than 20 cm (7.9 in)
below the dead air.
Placement on the ceiling or wall
Installing on the ceiling is recommended. Mark
where the screws will go using the base as a
guide. If you’re installing on the wall, make sure
it’s within 12 inches of the ceiling.
TOP OF
NEST PROTECT
NOT IN
THIS AREA
20 cm ( 7.9 i n)
Maximum
90 cm
(35.4 in)

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10. Install the new backplate
Screw the Nest Protect backplate to the electrical
box, reusing the old screws. You can also screw the
backplate directly into the wall or ceiling with the Nest
Protect screws. Make sure the screws are all the way
in and snug against the backplate.
11. Connect power
Plug the 120V connector into the back of your
Nest Protect.
Tip: All smoke alarms prefer to live in a dust free area,
so remove any dust before you install Nest Protect.

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Breaker box
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English
13. Switch power back on or replace the fuse
Tip: If you ever need to remove it (for cleaning or
baery replacement), turn o power to your Nest
Protect at the breaker box or remove the fuse rst.
Then turn counterclockwise until it disconnects from
the backplate.
12. Install your Nest Protect
First, tuck any excess wiring into the electrical box.
Line up the three tabs on the back of your Nest Protect
with the notches on the backplate. Hold Nest Protect
against the backplate and turn it clockwise. Continue
turning until it’s square with the wall or ceiling. Install
the rest of your Nest Protects if you have more.
8. Press to test
Press the buon on one Nest Protect. It will tell you
what to do next. Every Nest Protect in the house
should speak up, conrming that they’re connected
to each other.

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Heads-Up and Emergency Alarms
Silencing
Heads-Up ales and some Emergency Alarms can be
hushed by using the Nest app or pressing the buon.
In some cases, the smoke level may be too high for the
Emergency Alarm to be hushed. Only silence an alarm
once you have checked conditions at the Nest Protect
that rst sounded the alarm. Do not silence Nest
Protect by disconnecting it from mains voltage and
removing the baeries. This will disable the alarm so
it cannot sense smoke or carbon monoxide, leaving
you at risk.
Because there are many dierent types of res, you may
experience an Emergency Alarm without having rst
experienced a Heads-Up ale. This means that critical
levels of smoke or CO occurred extremely quickly
and Nest Protect has to sound the Emergency Alarm.
Have more than one Nest Protect?
Aer all the Nest Protects in your home are connected
to each other, if there’s a Heads-Up or an Emergency
Alarm in one room, they’ll all tell you what the danger
is and which room it’s in.
If multiple Nest Protects are interconnected, a Heads-Up
ale or Emergency Alarm can be silenced only at the
Nest Protect that originally sounded the ale. You’ll need
to go to that room to silence all the Nest Protects in your
home. Always check the conditions near the Nest Protect
that rst detected the smoke or carbon monoxide before
silencing it.
Ales
When Nest Protect has something to say, it will speak
to you in words and light up instead of just beeping.
Nest Protect has two kinds of voice ales: Heads-Up
and Emergency Alarms.
When smoke or carbon monoxide levels are heightened
but haven’t yet reached Emergency Alarm levels, Nest
Protect can sound a Heads-Up as an early warning.
Nest Protect will pulse yellow and tell you where there’s
smoke or carbon monoxide.
You’ll get an Emergency Alarm when smoke or carbon
monoxide reach critical levels. Nest Protect will pulse
red, sound a loud alarm, and tell you what room the
emergency is in. If there’s both smoke and CO present,
the smoke alarm will take priority.

What You Hear
Silencing
What It Means What To Do
Smoke levels are rising.
Carbon monoxide levels
have been high for a while.
The carbon monoxide
in the room has reached
critical levels.
YELLOW pulses.
YELLOW pulses.
RED pulses.
RED pulses.
YELLOW or
RED pulses.
GREEN pulses.
What You See
Heads-Up and Emergency Alarms
The smoke in the
room has reached
critical levels.
Ales
“HEADS UP. THERE’S SMOKE
IN THE [ROOM NAME]. THE
ALARM MAY SOUND.”
Put out the source of the
smoke. Then use the Nest app
or press the buon to hush
the ale.
Open a window or door to get
fresh air. Then use the Nest
app or press the buon to
hush the ale.
Get out of the
house immediately.
Make sure you’re safe and
have put out the source of
smoke or carbon monoxide.
Make sure you’re safe and
have put out the source of
smoke or carbon monoxide.
1) Operate reset/silence
buon.
2) Call your re dept. or 911.
3) Move to fresh air.
4) Do not reenter the
premises until the
emergency services
tell you to.
You’ve hushed an ale.
Nest Protect will now
keep quiet, unless smoke
or carbon monoxide
remains at critical levels.
Smoke or carbon
monoxide levels
are decreasing.
“HEADS UP. THERE’S
CARBON MONOXIDE IN
THE [ROOM NAME]. THE
ALARM MAY SOUND.”
(Alarm horn)
“EMERGENCY. THERE’S
CARBON MONOXIDE IN
[ROOM NAME]. MOVE TO
FRESH AIR.”
“SMOKE ALARM HUSHED.”
(Alarm horn)
“EMERGENCY. THERE’S
SMOKE IN [ROOM NAME].”
“CARBON MONOXIDE
ALARM HUSHED.”
“THE ALARM IS OVER.”
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English

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Daily Use and Emergency Preparation
Daily Use
Power
Nest Protect (Wired 120V) has a small green light
located at the top of the buon. It will be on as
long as Nest Protect is geing AC power from
the electrical wires.
If there’s a wiring problem or power outage, the
green light will turn o and Nest Protect will switch
to backup baeries. You’ll also see a yellow (instead
of green) Nightly Promise light when you turn o the
lights for the night.
Nightly Promise
Nest Protect continuously tests itself, so you don’t
have to wonder if it’s working. Nightly Promise repos
on every Nest Protect in your home.
When you turn out the lights for the night, Nest
Protect will glow green for a moment – that means
everything is working. If it glows yellow, one of the
Nest Protects in your home needs your aention.
For instance, the baeries are low, Wi-Fi is down,
or there’s an issue with the sensors. Just push the
buon or use the Nest app to see what’s wrong.
Pathlight
Usually Nest Protect has its light turned o, but it
can light your way as you walk underneath it in the
dark. You can enable or disable Pathlight and set
its brightness with the Nest app.
Emergency Preparation
Testing
Peorm a manual test of your wired Nest Protect
at least weekly. During a test, all interconnected Nest
Protects in your home check their sensors, power,
Wi-Fi connection, light ring, emergency horn, speaker
and microphone.
When you run a test, Nest Protect will give you a
countdown before sounding the alarm so you have
time to move away from the loud noise.
Test procedure:
1. Sta a test by pressing the buon twice.
2. Nest Protect will say: “This is only a test. The alarm
will sound.”
3. Ensure that the alarm sounds and the light
illuminates on each Nest Protect.
4. Once the Nest Protect has made sure it’s
working, it’ll tell you everything’s okay. If you
have interconnected Nest Protects, all of them
should speak.
Sound Check
Nest Protect can automatically peorm a monthly test
to conrm that its speaker and horn are working properly.
You can choose to enable this option during initial setup
with the app, but you can change it at any time. For more
information, visit g.co/nest/soundcheck

WARNING
• DO NOT stand close to the alarm when the horn is
sounding. Exposure at close range may be harmful
to your hearing. When testing, step away before
the horn stas sounding.
• If the alarm ever fails to test correctly, have it
replaced immediately! If the alarm is not working
properly, it cannot ale you to a problem.
• DO NOT use a match, cigaree or any other
makeshi re to test the smoke alarm.
• To test the CO alarm, NEVER use vehicle exhaust!
Exhaust may cause permanent damage and will
void your warranty.
• NEVER use an open ame of any kind to test this
alarm. You might accidentally damage or set re
to the unit or to your home.
You turn o the
room lights for
the night, and
the GREEN light
pulses once.
Emergency
Preparation
What You Hear What It Means What To DoWhat You See
Daily Use And Emergency Preparation
Nest Protect is working.
The green light means
AC power is connected.
GREEN light
above the Nest
logo.
Pathlight lights your
way at night as you pass
under it.
WHITE light.
BLUE rotates. To set up or run
a manual test.
“READY. PRESS TO TEST.”
Daily Use
Nest Protect has tested
its sensors, power and
Wi-Fi to conrm they are
working correctly.
Sleep well thanks
to Nightly Promise.
Press the buon.Nest Protect
will walk you through next steps.
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English

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Replacing the backup baeries
In case of a power outage, Nest Protect will use
three AA Energizer® Ultimate Lithium baeries (L91)
for backup. These baeries can be purchased at
your local retailer.
1. Turn o power to Nest Protect at the breaker
box (see p.9)
2. Twist Nest Protect counterclockwise until
it disconnects from the backplate.
3. Detach the power connector
from the back of Nest Protect
and open the baery door.
4. Replace the baeries. Align
the + positive and - negative
ends with the markings in the
baery compament.
5. Close the baery
compament. Do not force the door closed.
6. Reaach the power connector.
7. Push Nest Protect onto the backplate and turn
it clockwise until you feel it grip.
8. Turn power to Nest Protect back on at the
breaker box.
9. Press the buon twice.
Servicing
If your Nest Protect needs servicing, rst contact
our suppo team at g.co/nest/suppo to get a return
number and shipping information.
Cleaning your Nest Protect
Nest Protect has been designed to be as maintenance
free as possible, but you should keep it clean. As with
any smoke alarm, dust buildup on the outside or inside
of Nest Protect can stop it from working properly.
To clean Nest Protect:
1. Remove it from the wall or the ceiling (turn
counterclockwise until it comes o the backplate).
2. Wipe the outside with a clean, slightly damp cloth.
Don’t use any soaps or solvents.
3. Place Nest Protect on a so, dry cloth with the buon
facing down. Open the baery compament door
and remove the baeries. Remove the screws and li
o the back. Be careful to not lose the screws.
4. Gently vacuum the inside. Make sure to clean
all the way around the mesh sides of the smoke
chamber (the large metal circle).
Note: Never use detergents or solvents (like glass
cleaner) on your Nest Protect and do not spray air
fresheners, hair spray or other aerosols near it. Do not
get water inside the alarm or paint over it.
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General Maintenance