Ecobee Smart Si User manual

©2014 ecobee
477 Richmond St West | 2nd Floor,
Toronto | Ontario | M5V 3E7 | Canada
Toll free 1.877.932.6233
www.ecobee.com
EB-SmartSiIM-01-rev3

Smart Si Thermostat
Installation Manual

CONTENTS
GETTING STARTED 1
Welcome 1
Technical Support 1
Before You Begin 2
HVAC System Compatibility Information 3
Approvals 4
FCC Compliance Statement 4
Specications 5
Wiring Requirements 6
INSTALLING THE SMART Si THERMOSTAT 7
Step 1. Power O HVAC Equipment 7
Step 2. Remove Existing Thermostat 7
Step 3. Install the Smart Si Thermostat 7
Step 4. Connect the Wiring 9
Step 5. Power On HVAC Equipment 21

CONFIGURING THE SMART Si THERMOSTAT 24
Equipment 24
Thresholds 26
Test Equipment 30
Reset HVAC Equipment Settings 31
Performing a Hardware Reset 31
Rebooting the Smart Si Thermostat 31
Conguring Reminders and Alerts 32
Alerts 33
List of Alerts 34
3-YEAR LIMITED WARRANTY 35

GETTING STARTED
Welcome
The ecobee Smart Si thermostat has been
designed in partnership with HVAC contractors
to ensure the installation process is simple
and ecient. This step-by-step Installation
Manual will walk you through all aspects of the
installation.
To ensure an on-going service relationship
with your customers, please register all of your
ecobee thermostats in your Contractor Portal.
Technical Support
Our technical support team is available to
answer your questions at 1.877.932.6233, or via
email at [e-mail].
1

Before You Begin
This product is intended to be installed by
trained service professionals.
This manual explains the procedures for
installing the ecobee Smart Si thermostat.
Please read it carefully before beginning the
installation.
For information on how to operate the ecobee
Smart Si thermostat, please see the Smart Si
Thermostat User Manual.
The Smart Si thermostat is designed to be
mounted on the homeowner’s wall in a
convenient location.
Caution: Disconnect electric power to the HVAC
system before installing this product. Failure
to do so could result in electric shock and/or
equipment damage.
All wiring must conform to your local electrical
code.
Mercury Notice: This product does not contain
mercury. If you are replacing a product that
does contain mercury, contact your local
waste-management authority for disposal
instructions. Do not discard the old product in
the regular trash.
ecobee
OK
MENU BACK
!
2

HVAC System Compatibility
Information
The Smart Si thermostat is designed to operate
with low-voltage heating and cooling systems.
It is not designed for use with line-voltage or
millivolt heating and cooling systems.
The Smart Si thermostat supports:
Up to 2 heat and 2 cool stages on a
conventional system.
Up to 3 heat and 2 cool stages on a heat
pump system.
The ecobee Smart Si thermostat supports the
following equipment:
Equipment Supported?
Gas/Oil/Electric heating Yes
(up to two stages)
Heat pump with auxiliary heat Yes
(up to three stages)
Geothermal Heat Pump Yes
Dual fuel systems Yes
Standard electric cooling Yes
(up to two stages)
Boilers Yes
3

Approvals
This product was designed and built in accordance
to RoHS directive 2002/95/EC and contains no
hazardous substances as dened by this directive.
FCC Compliance Statement
This equipment has been tested and found to
comply with the limits for Class B digital devices,
pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against
harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instruction manual, may cause
harmful interference to radio communications.
However, there is no guarantee that interference
will not occur in a particular installation. If this
equipment does cause harmful interference to radio
or television reception, which can be determined
by turning the equipment o and on, the user is
encouraged to try to correct the interference by one
or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment
and receiver.
Connect the equipment to an outlet on a dierent
circuit from the receiver.
Consult the dealer or an experienced radio/TV
contractor for help.
To satisfy FCC/IC RF exposure safety requirements,
a separation distance of 8 inches (20 cm) or more
should be maintained between this device and
persons. To ensure compliance, operation at closer
than this distance is not allowed.
4

FCC ID: WR9EBSTAT IC: 7981A-EBSTAT
Warning: Changes or modications not expressly
approved by ecobee Inc. could void the user’s
authority to operate the equipment.
Specications
Temperature ranges
Heat: 45 to 79 °F (7 to 26 °C) by default
Adjustable from 45 to 120° F (7 to 49° C)
Cool: 65 to 92 °F (7 to 33 °C) by default
Adjustable from -10 to 120° F (-23 to 49° C)
Display: 40 to 100 °F (5 to 37 °C)
Sensitivity: +/- 1 °F (0.5 °C)
Operating: 32 to 130 °F (0 to 55 °C)
Humidity Range
Display: 20 to 90% R.H.
Sensitivity: +/- 5% R.H.
Operating: 5 to 95% R.H (non-condensing)
Dimensions
Thermostat: 5.5”W x 3.25”H x 1”D
(139.5mm H x 82.5mm W x 25mm D)
Power Consumption
24VAC (3VA maximum)
5

Wiring Requirements
The following table shows the maximum wire lengths allowed:
Thermostat to HVAC Equipment
18 AWG 20 AWG 22 AWG
128 ft/380 m 80 ft/240 m 50 ft/150 m
Terminal Description and Electrical Ratings
Terminal Description Voltage Current (Max)
N/C Unused N/A N/A
Y 1st stage compressor 24V AC 2A
W (O/B) 1st stage heating 24V AC 2A
or reversing valve
changeover
G Fan 24V AC 2A
C Common 24V AC 2A
Y2 2nd stage compressor 24V AC 2A
W2 (AUX) 2nd stage heating or 24V AC 2A
1st stage auxiliary heat
* Factory jumper installed between RC and RH. Remove jumper
for 2-transformer applications. See wiring diagrams for additional
information.
6

INSTALLING THE SMART Si
THERMOSTAT
There are 5 steps to install the ecobee Smart Si thermostat:
Step 1. Power O HVAC Equipment
Step 2. Remove Existing Thermostat
Step 3. Install the Smart Si Thermostat
Step 4. Connect the Wiring
Step 5. Power On HVAC Equipment
Step 1. Power O HVAC Equipment
Before disconnecting the existing thermostat, or installing the
Smart Si thermostat, disconnect the power to the heating and air
conditioning equipment.
Step 2. Remove Existing Thermostat
Disconnect the wires to the existing thermostat and remove it
from the wall (if you are installing the Smart Si thermostat in the
same location).
Step 3. Install the Smart Si Thermostat
The ideal location for the thermostat is approximately 5 ft (1.5 m)
above oor level in the main living area.
Do not install the thermostat:
Close to sources of heat such as incandescent lights
Near supply heating/cooling sources
In direct sunlight
On exterior, non-insulated or poorly insulated walls
7

In the kitchen or other areas of potentially high heat and/or
humidity
In an area that could restrict air ow
To install the thermostat:
1. Gently separate the backplate from the thermostat.
2. Place the thermostat backplate on the wall. Make sure that
any existing wires can be inserted through the opening on the
thermostat.
3. Using the backplate as a template, mark the location of the
mounting holes on the wall as shown below.
4. Move the backplate out of the way and make holes where
indicated in step 3. The mounting holes can accommodate a #6
pan-head screw. It is recommended to use the included fasteners
to ensure proper tting of the front housing.
5. Use the included drywall plugs (or other suitable anchors) to
ensure the thermostat can be mounted securely to the wall.
6. Fasten the backplate to the wall using the screws provided (or
other suitable screws).
Y N/C
W
O/B
GRCRHCY2
W2
AUX
The solid color indicates mounting holes
8

9
Step 4. Connect the Wiring
You need to use low-voltage cable to connect the thermostat to the HVAC
equipment. Check the wiring diagrams on the subsequent pages for the
number of wires required.
Note: There is a factory installed jumper between R/H and R/C. Ensure any
unused wires do not have exposed bare copper conductors.
To connect the thermostat to the equipment:
1. Connect the wires as shown in the wiring diagrams.
2. Attach the Smart Si thermostat to the backplate. Ensure that the pins on
the thermostat align with the terminal block on the backplate.
Wiring Diagrams
The following diagrams show how to connect the thermostat terminals to
various HVAC equipment.

10
YN/C
W
O/B
GRCRHCY2
W2
AUX
1-stage AC
C
24V
Y
G
R
W
C
HUM
1-stage Furnace
Smart Si Thermostat
Single stage heat/cool

11
YRWGR
1-stage AC
C
24V
Y
G
R
W
C
HUM
1-stage Furnace
Original Thermostat
YN/C
W
O/B
GRCRHCY2
W2
AUX
1-stage AC
C
24V
Y
G
R
W
C
HUM
1-stage Furnace
Smart Si Thermostat
Use jumper
wire included
in box
Repurpose G
wire as C wire
Use jumper wire included in box to connect Y and G on the furnance
Repurpose the original G wire as C wire. Note that the furnance controls the fan in this
conguration.
Single stage heat/cool with 4 wires at thermostat
Before
After

2-stage AC
Y2
R
C
Y1
Y
G
R
W
C
HUM
1-stage Furnace
Smart Si Thermostat
YN/C
W
O/B
GRCRHCY2
W2
AUX
Single stage heat, dual stage cool
12

YN/C
W
O/B
GRCRHCY2
W2
AUX
Y1
G
W2
W1
HUM
C
R
Y2
2-stage Furnace
Smart Si Thermostat
1-stage AC
C
24V
Dual stage heat, single stage cool
13

YN/C
W
O/B
GRCRHCY2
W2
AUX
Y1
G
W2
W1
HUM
C
R
Y2
2-stage Furnace
Smart Si Thermostat
2-stage AC
Y2
R
C
Y1
Dual stage heat, dual stage cool
14

YN/C
W
O/B
GRCRHCY2
W2
AUX
O
W
Y/Y2
C
G
R
Air Handler
Smart Si Thermostat
1-stage Heat Pump
W2
R
Y
C
O
Single stage heat pump with auxiliary heat
15