EMS Si Manual
CONTENTS GETTING STARTED Before You Begin HVAC System Compatibility Specifications Wiring Requirements 1 2 3 4 5 INSTALLING THE EMS Si Step 1. Power Off HVAC Equipment Step 2. Remove Existing Thermostat Step 3. Install the EMS Si Step 4. Connect the Wiring Step 5.
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GETTING STARTED Welcome The ecobee Energy Management System Si (EMS Si) is the newest technology designed for the commercial market. It is ideal in applications where a simple programmable Thermostat does not provide adequate controls and functionality and a full-scale building automation system is too complex and cost prohibitive. The ecobee EMS Si is user-friendly, reduces a building’s operating costs, and delivers increased energy conservation.
Before You Begin This product is intended to be installed by trained service professionals. This manual explains the procedures for installing the ecobee EMS Si. Please read it carefully before beginning the installation. The EMS Si is designed to be mounted on the wall in a convenient location. OK MENU BACK ecobee ! 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.
HVAC System Compatibility Information The EMS Si is designed to operate with lowvoltage heating and cooling systems. It is not designed for use with line-voltage or millivolt heating and cooling systems. The EMS Si 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 EMS Si There are 5 steps to install the ecobee EMS Si: Step 1. Power Off HVAC Equipment Step 2. Remove Existing Thermostat Step 3. Install the EMS Si 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 EMS Si, disconnect the power to the heating and air conditioning equipment. Step 2.
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. W2 Y2 R2- R2+ R1- R1+ AUX C RH RC G W O/B Y N/C The solid color indicates mounting holes 4.
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 EMS Si to the backplate.
1-stage Furnace Y W G R HUM C 1-stage AC 24V C EMS Si Thermostat W2 Y2 R2- R2+ R1- R1+ AUX 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 EMS Si Thermostat W2 Y2 R2- R2+ R1- R1+ AUX 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 EMS Si Thermostat W2 Y2 R2- R2+ R1- R1+ AUX 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 EMS Si Thermostat W2 Y2 R2- R2+ R1- R1+ AUX 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 EMS Si Thermostat W2 Y2 R2- R2+ R1- R1+ AUX 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 EMS Si Thermostat W2 Y2 R2- R2+ R1- R1+ AUX 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 EMS Si Thermostat W2 Y2 R2- R2+ R1- R1+ AUX 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 EMS Si Thermostat W2 Y2 R2- R2+ R1- R1+ AUX 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 EMS Si Thermostat W2 Y2 R2- R2+ R1- R1+ AUX 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 EMS Si Thermostat W2 Y2 R2- R2+ R1- R1+ AUX 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 EMS Si receives power from the equipment and will automatically power on. NAVIGATING THE MENUS The EMS Si 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 HVAC SETTINGS The first step after installing the EMS Si 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.
Furnace Allows you to enable and configure up to a 2-stage conventional heat source. If you have selected a heat pump as your primary source, this feature allows you to configure the 1st stage of auxiliary heat connected to the system. Furnace Type Allows you to configure the type of furnace. This helps the thermostat 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.
Thresholds This section configures the temperature and time thresholds associated with the heating and cooling equipment. You must configure the Equipment settings (page 10) before setting the thresholds. Only the applicable threshold settings will be displayed (i.e. if no air conditioner is configured, you will not see the options related to air conditioners). Allow Auto Heat/Cool Enabling this option allows the user to select auto change-over as a system mode.
(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. Aux Heat Settings Max Outdoor Temperature Configures the maximum outdoor temperature threshold. Above this level, the auxiliary heat will not be activated. The temperature is adjustable from 0 to 80 °F (26.5 °C) in increments of 0.5°F (0.5°C).
in longer cycle times. The temperature range is adjustable from 0 to 3 °F (0.3 to 1.7 °C) in 0.5°F (0.3°C) increments. Cool Dissipation Time The amount of time the fan will run after the cool has been turned off. Running the fan for a period of time allows for any cooled 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. Advanced Settings These options customize how long each stage will run before the next stage turns on.
next stage. Options are Auto (default) and 10 to 120 minutes. Comp to Aux Temp Delta The maximum amount of time this stage will run before engaging the next stage. Options are Auto (default) and 1 to 10 °F (0.6 to 5.6 °C). Comp to Aux Runtime The minimum difference between the current temperature and the set temperature that will activate this stage (regardless if the maximum run time of the previous stage was reached). Options are Auto (default), Disabled, and 1 to 10 °F (0.6 to 5.6 °C).
Test Equipment These options let you test the wiring and connections of the devices connected to the thermostat by turning them on or off. The equipment will turn off when you exit the menu. ! Warning: Compressor protection and minimum run-time features are not enforced while in this mode. To test the equipment: From the Home screen, press MENU. Select Settings ▶ Installation Settings. Select Test Equipment. Select OK. Test the equipment connected to the thermostat by turning each component on and off.
Rebooting the EMS Si You can reboot the EMS Si by pressing the physical hardware reset button, located through an opening in the bottom left corner of the EMS Si. Rebooting will not alter programming or configuration options.
Configuring Reminders and Alerts The Reminders and Alerts list displays the reminders and alerts described below. To configure Reminders and Alerts HVAC Service From the Home screen, press MENU. The HVAC Service (maintenance) reminder generates an alert telling the homeowner that regularly scheduled maintenance is required. Select Reminders and Alerts. This alert, along with technician contact information can be displayed on the screen.
Alerts The EMS Si can generate alerts if the temperature in the home goes over or under a pre-programmed 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.
Enable Heating/Cooling Alerts Select No to disable alerts for heat/cool error conditions. If disabled, alerts indicating that the system failed to heat or cool will not be appear in the screen, web portal, or emails. List of Alerts Below is a complete list of alerts. Depending on your configuration, some of these may not apply. 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 building is too low.
AUTOMATION The EMS Si can be configured to perform actions based on the status of its 2 dry contact inputs or remote temperature sensors when configured for monitoring purposes. You can have multiple actions per input. You can also have the same input perform different actions when it is open or closed. For example, if a window sensor is open, you can configure the system to adjust the temperature set point and disable the AC.
Do Nothing No specific action will occur. Switch to Occupied* Switches the system to the Occupied program when the input is activated. Switch to Unoccupied* Switches the system to the Unoccupied program when the input is activated. * The Economizer and/or Occupancy relay outputs, if configured, will also be switched to the appropriate state when this input is configured and activated.
input is cleared. Send Alert Enables the system to send an alert when the input has been activated. Send Update Log Enables the system to log when this input is activated. Activation Delay Configures time delay from when the input detects the active state to when the action programmed in the Type section is performed by the system.
If Adjust Temperature is chosen as the Type you will also be presented with the following options: Decrease Heat Temp Allows you to program the number of degrees that the heat set temperature will be adjusted by once an input has been activated. A positive number increases the heat set point and a negative number decreases the heat set point Increase Cool Temp Allows you to program the number of degrees that the cool set temperature will be adjusted by once an input has been activated.
CONNECTING TO THE INTERNET Connect your EMS Si to the Internet so you can control it from your own personalized, secure ecobee Web Portal, smartphone, or tablet. From the Web Portal, you can: Program, configure and control your EMS Si. Control your EMS Si from anywhere you have Internet access (including smartphones and tablets). Use local weather data to maximize energy savings. Receive important alerts and reminders about your heating and cooling system.
Setting Up WiFi and Obtaining a Registration Code The EMS Si uses your building WiFi network to connect to the Internet. First, enable WiFi on the EMS Si (see instructions to the right). To set up WiFi: From the Home screen, press MENU. Select Register Thermostat. The EMS Si will display a list of available networks, along with an indication of the signal Select Continue. strength (the more bars, the better) and whether Select WiFi Settings. encryption is used.
Having Trouble? If you are having trouble connecting to the Internet or finding your WiFi network, you may need to configure your network parameters manually. See WiFi on page 52. Configuring a Web Portal Account After setting up WiFi on your EMS Si and obtaining the registration code, you need to configure your Web Portal account. 1. From a web browser on a PC, visit www.ecobee.com and click on the REGISTER link. 2.Click the EMS Si. 3. Click Create a new account.
4. Enter your address, contact, and user account information. Click Submit. Your EMS Si is now registered. You can now monitor and control your EMS Si from the Web Portal or from your smartphone or tablet.
USING YOUR EMS Si The bright, easy-to-read screen on your EMS Si makes it simple to review and adjust the settings any time you want. Adjusting the Temperature You can easily adjust the temperature without changing the EMS Si’s programming by pressing the arrow keys when the Home screen is displayed. Press ▲ to increase the temperature set point by 1°F (0.5°C). Press ▼ to decrease the temperature set point by 1°F (0.5°C). If the EMS Si is set to Auto mode, press ◀ to select the Cool setting.
System Mode This menu sets your system to use heat, cool, or auto mode: Cool The system will turn on the air conditioner when the current temperature rises above the set temperature. Heat The system will turn on the heat when the current temperature drops below the set temperature. To change system mode: From the Home screen, press MENU. Select System Mode. Select your temperature mode: Heat, Cool, Auto or Off.
Hold 2 hours The fan will switch to this setting but revert back to weekly schedule after 2 hours. Hold 4 hours The fan will switch to this setting but revert back to weekly schedule after 4 hours. Indefinite The fan will switch to this setting and will only revert back if you do so manually . Until Next Transition The fan will switch to this setting but will revert back when the program switches to the next period. Update Schedule The fan will update the current schedule with this new fan setting.
Weather Forecast Displays the current outdoor temperature and weather conditions for your registered location. To view the weather forecast: Note that when you register, it’s important to select your location accurately, as ecobee will use your local weather data to optimize your heating and cooling. You must register your EMS Si for this feature to operate. From the Home screen, press MENU. Select Weather Forecast. Press OK to switch between the 4-day and 24-hour forecast.
CONFIGURING YOUR EMS Si This section describes how configure the personal preferences, temperature settings, and operation of your EMS Si. There are three key steps: Configure Personal Preferences Set up Reminders and Alerts Create your Weekly Schedule Note: You can also configure your EMS Si from your personalized Web Portal. Simply open a web browser, go to ecobee.com, and log in.
Date and Time Select Date & Time to: Set the current date. Set the current time. Select a 12-hour or 24-hour time format. Select your time zone. Enable or disable daylight savings adjustments. If you are connected to the Internet, the time and date are programmed automatically. Brightness The color screen has adjustable backlight brightness. You can control the intensity when the screen is active (i.e., when you are pushing buttons) and when the display is in standby mode (idle screen).
Hold 2 hours Hold 4 hours Until next transition Thermostat will hold temperature until the next program period. Indefinite Thermostat will hold temperature until you press OK. Update Schedule When you adjust the set temperature, the system will update the temperature in the Weekly Schedule for the current period. Ask Me Every time you adjust the set temperature you will be asked which of the options you would like to choose.
You can also configure the level of access control: Restrict All Access Unauthorized users will only be able to view the home screen and the weather information. Restrict Details Access The code is required to access the Details screen. Restrict Program Access The code is required to view and modify the EMS Si’s Weekly Schedule. Restrict Vacation Access The code is required to view and create a Vacation. Restrict QuickSave The code is required to exit QuickSave mode from the Web Portal.
Recovery Options Recovery options allow the EMS Si to learn how your heating and cooling system works, taking into account infrastructure, weather and historical operating performance so that your home is a comfortable temperature as soon as you walk in the door. Smart Recovery Heat The EMS Si will start heating at the optimum time to ensure the set point is reached at the programmed time.
CPP Response Your utility may send voluntary events to your EMS Si. You can choose to Always Accept these events. In which case, you would just be notified that an event is in progress. Or if you choose Ask Me, when the Utility issues an event, you will be asked if you want to participate. If you do not acknowledge the event prior to the start, the system will default to yes.
Duty Cycle This option allows you to program the maximum amount of time the system will run during a 1 hour period. For example, if you select 30%, the air conditioner will run for a maximum of 18 (0.3 x 60) minutes regardless of whether the set point has been met. 0% essentially turns the system off, whereas 100% runs the system at full capacity. WiFi To configure WiFi manually: From the Home screen, press MENU. Select WiFi. Adjust the network options for your home network. The EMS Si supports WiFi 802.
Creating Your Weekly Schedule Your heating and cooling needs change depending on the time of day and day of the week. For example, if there’s no one in the building on a holiday you might want to let the temperature go up in the summer, to reduce energy used by the air conditioning system, and down in the winter, to reduce heating energy. To view your weekly schedule: From the Home screen, press MENU. Select Weekly Schedule. Your weekly schedule is shown on the screen.
If your schedule changes, you can quickly and easily update the EMS Si settings on the device itself or online through your Web Portal. Using the Weekly Schedule Editor The Weekly Schedule editor lets you to set specific times, temperatures and furnace fan settings for each day of the week. If your system is enabled for auto change-over mode, the heat and cool set temperatures will automatically be adjusted to ensure a minimum difference.
Scheduling a Calendar Event The EMS Si’s Calendar Event feature helps you conserve energy while you are away for extended periods of time. It also ensures your building is comfortable when you return. To schedule a calendar event: A calendar event includes a name, start date and time, as well as the end date and time. You can enter any number of uniquely named vacations. Other vacation features to choose from include: Select Calendar Events.
Fan Toggles the fan setting between ON and Auto. ON The fan runs all the time regardless of programming or if there is a call for heat or cool. The fan will also run if the System Mode is OFF. Auto This option turns the furnace fan on but only when the system is heating or cooling your home, or to satisfy the minimum fan run time as programmed. Fan Min On Time This feature allows you to determine a minimum time per hour that the furnace fan will run.
Delete Event You can delete individual or all calendar events: To remove an individual vacation event, display the details about the vacation event, then select Delete Event ▶ Yes. To remove all vacation events, display the Calendar Event menu and select Delete All ▶ Yes.
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