Smart Si Thermostat Installation Manual
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GETTING STARTED Welcome The ecobee Smart Si thermostat has been designed in partnership with HVAC contractors to ensure the installation process is simple and efficient. 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.
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.
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.
Specifications Temperature ranges Heat: Cool: Display: Sensitivity: Operating: 45 to 79 °F (7 to 26 °C) 45 to 92 °F (14 to 33 °C) 40 to 100 °F (5 to 37 °C) +/- 1 °F (0.5 °C) 32 to 130 °F (0 to 55 °C) Humidity Range Display: Sensitivity: Operating: 20 to 90% R.H. +/- 5% R.H. 5 to 95% R.H (non-condensing) Dimensions Thermostat: 5.5”W x 3.25”H x 1”D (139.5mm H x 82.
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 30V AC 3A W (O/B) 1st stage heating or reversing valve changeover 30V AC 3A G Fan 30V AC 3A RC Cool transformer * 30V AC 3A RH Heat transformer * 30V AC 3A C Common 30V AC 3A Y2
INSTALLING THE SMART Si THERMOSTAT There are 5 steps to install the ecobee Smart Si thermostat: Step 1. Power Off 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 Off 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.
In the kitchen or other areas of potentially high heat and/or humidity In an area that could restrict air flow 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 for the wiring. 3. Using the backplate as a template, mark the location of the mounting holes on the wall as shown below.
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 pages 8 to 17 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.
1-stage Furnace Y W G R HUM C 1-stage AC 24V C Smart Si Thermostat W2 AUX Y2 C RH RC G W O/B Y N/C Single stage heat/cool 9
1-stage Furnace Y W G R HUM C 2-stage AC Y1 Y2 R C Smart Si Thermostat W2 AUX Y2 C RH RC G W O/B Y N/C Single stage heat, dual stage cool 10
2-stage Furnace Y1 W1 G W2 R Y2 1-stage AC 24V HUM C C Smart Si Thermostat W2 AUX Y2 C RH RC G W O/B Y N/C Dual stage heat, single stage cool 11
2-stage Furnace Y1 W1 G W2 R Y2 2-stage AC Y1 Y2 R C HUM C Smart Si Thermostat W2 AUX Y2 C RH RC G W O/B Y N/C Dual stage heat, dual stage cool 12
Air Handler 1-stage Heat Pump O O W Y/Y1 G R W2 Y R C C Smart Si Thermostat W2 AUX Y2 C RH RC G W O/B Y N/C Single stage heat pump with auxiliary heat 13
2-stage Heat Pump Air Handler O O Y1 W2 Y2 R C W Y/Y1 G R C Smart Si Thermostat W2 AUX Y2 C RH RC G W O/B Y N/C Dual stage heat pump with auxiliary heat 14
Air Handler Y1 Y2 R C G Boiler R 1-stage AC 24V C C W Smart Si Thermostat W2 AUX Y2 C RH RC G W O/B Y N/C * Remove RH/RC factory jumper C terminal to be connected to heating transformer common Boiler with air handler and single-stage cool 15
Air Handler Y1 Y2 R C G 2-stage Boiler R C W2 W1 1-stage AC 24V C Smart Si Thermostat W2 AUX Y2 C RH RC G W O/B Y N/C * Remove RH/RC factory jumper C terminal to be connected to heating transformer common Dual stage boiler with air handler and single stage cool 16
2-stage AC Air Handler Y1 Y2 R C G Boiler R C W Y1 Y2 R C Smart Si Thermostat W2 AUX Y2 C RH RC G W O/B Y N/C * Remove RH/RC factory jumper C terminal to be connected to heating transformer common Single stage boiler with air handler, dual stage cool 17
2-stage AC Air Handler Y1 Y2 R C G 2-stage Boiler R C W1 W2 Y1 Y2 R C Smart Si Thermostat W2 AUX Y2 C RH RC G W O/B Y N/C * Remove RH/RC factory jumper C terminal to be connected to heating transformer common Dual stage boiler with air handler, dual stage cool 18
Step 5. Power On HVAC Equipment After you’ve completed the wiring, you can apply power to the heating and air conditioning equipment. The Smart Si thermostat receives power from the equipment and will automatically power on. NAVIGATING THE MENUS The Smart Si thermostat has an easy-to-read color screen that displays all the information you need to configure the thermostat. Use the navigation buttons on the right to quickly change the temperature, access features, and configure settings.
▶ (right) On the Home screen, if Auto mode is enabled, press ▶ to switch between heat and cool set points. For menus, press ▶ to choose the currently highlighted option. OK On a menu screen, press OK to choose the currently highlighted option. If a configuration option is selected, pressing OK will keep its new value and return back to the previous screen. MENU Pressing MENU displays a list of all available options.
CONFIGURING THE SMART Si THERMOSTAT The first step after installing the Smart Si thermostat is to configure the settings for the various devices (such as a furnace or air conditioner) that are being connected. Equipment To configure the equipment settings: The Equipment settings let you configure the devices connected to the thermostat. From the Home screen, press MENU. Heat Pump Select Settings ▶ Installation Settings.
from running when the outdoor temperature is too low, thus resulting in damage to the compressor. You can also set this value to determine when you want the auxiliary heat (if installed) to engage to help meet the set temperature. The temperature range is adjustable from 0 to 65 °F (–17.8 to 18.3 °C) or can be completely disabled. Note: You need an internet connection for this feature to operate properly.
optimize its algorithms based on the type of fuel and typical characteristics of the chosen system. Choose the option that best represents the type of heating system installed. Heat Fan Control Configures the furnace fan to be controlled by the Smart Si thermostat or the HVAC system during heat cycles. Normally the HVAC system controls the fan during heat cycles. Air Conditioner Configures up to 2 stages of air conditioning. If you require a second stage, you must enable the Y2 relay.
Compressor Settings Min Cycle Off Time Configures the compressor off time between cycles. This ensures the compressor does not short cycle (which could affect the operating life of the system). This time is adjustable from 240–900 seconds. Min Outdoor Temp Configures the minimum outside air temperature at which the compressor will be disabled. This performs two functions. It prevents the compressor from running when the outdoor temperature is too low, thus resulting in damage to the compressor.
is adjustable form 0 to 3 °F (-17.5 to 26.5 °C) in 0.5°F (0.5°C) increments. Heat Dissipation Time The amount of time the fan will run after the heat set point has been reached and the call for heat has been turned off. Running the fan for a period of time allows for any heated air left in the ducts to circulate throughout the home. The time is adjustable from 0 to 900 seconds. The default value is 30 seconds.
start in stage 1. As the stage 1 temperature delta is exceeded, the second stage will engage. Once the equipment has brought the current temperature back to within the heat or cool differential setting, stage 2 will disengage and stage 1 will remain running until the set point is meet. Stage 2 Temp Delta The minimum difference between the current temperature and the set temperature that will activate the auxiliary heat (regardless if the maximum run time of the previous stage was reached).
Temp Correction Lets you program an offset between the real temperature at thermostat and the displayed temperature. If you find that the temperature where the thermostat is located does not represent the room temperature, change the offset to compensate for the difference. The correct temperature is adjustable from +/- 10°F in 0.5°F (0.3°C) increments. Installer Code To prevent accidental modifications to the installation settings, you can enable a 4-digit installer code.
Reset HVAC Equipment Settings You can quickly restore all HVAC equipment settings on the Smart Si thermostat back to their factory defaults. Any user setting (not related to the equipment installed) will remain unchanged. To reset the Smart Si thermostat: If you need to reset the entire thermostat back to its original factory default settings, including user settings and registration, select Reset All Settings instead. Select Settings ▶ Reset. From the Home screen, press MENU.
Configuring Reminders and Alerts To configure Reminders and Alerts The Reminders and Alerts list displays the reminders and alerts described below. From the Home screen, press MENU. HVAC Service Select Reminders and Alerts. The HVAC Service (maintenance) reminder generates an alert telling the homeowner that regularly scheduled maintenance is required. Configure the Reminder and Alert settings as required. This alert, along with technician contact information can be displayed on the screen.
Alerts The Smart Si thermostat can generate alerts if the temperature in the home goes over or under a preprogrammed level. This protects the home from damage due to freezing and/or excessive heat. This alert, along with optional technician contact information will be displayed on the screen. If the homeowner registers the thermostat, the alert will be emailed to them and be displayed in the web portal. Low Temp Alert Sets the temperature at which the thermostat will generate a Low Temperature Alert.
List of Alerts Below is a complete list of alerts. Depending on your configuration, some of these may not apply. 31 Furnace Air Filter Furnace filter needs to be cleaned or changed. UV Lamp UV lamp needs to be changed. Low Temp Alert Temperature in the home is too low. High Temp Alert Temperature in the home is too high. Heat Not Responding The system has failed to heat the home. Cool Not Responding The system has failed to cool the home.
3-YEAR LIMITED WARRANTY ecobee warrants that for a period of three (3) years from the date of purchase by the consumer (“Customer”), the ecobee Smart Si thermostat (the “Product”) shall be free of defects in materials and workmanship under normal use and service. During the warranty period, ecobee shall, at its option, repair or replace any defective Products, at no charge.
of nature; was not installed by a licensed Heating Ventilating and Air Conditioning (HVAC) contractor; or was installed improperly. ecobee’s sole responsibility shall be to repair or replace the Product within the terms stated above. ECOBEE SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT.
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 into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. This device complies with part 15 of FCC rules. Operation is subject to the following two conditions: 1.
RF Exposure Statement: This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled environment. This transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be collocated or operating in conjunction with any other antenna or transmitter. Cet équipement est conforme avec IC RSS-102 des limites d'exposition aux rayonnements définies pour un environnement non contrôlé.
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