Communicating Thermostat TheLS-90 has 2 RTM-1 radio ports. These allow your thermostat to communicate with other systems. Depending on your area Power Company, programs may be available to connect your thermostat to power grid status information. This can make it easy for you to moderate your energy use at peak hours and use power when it is less expensive. The RTM-1 ports also allow you to connect yourLS-90 to your home WiFi network.
PG 1 LS-90 Operation Guide The LS-90 programmable communicating thermostat operates via a high-quality, easyto-use touch screen. To program or adjust your LS-90, simply touch your finger or the stylus firmly to the screen. The screen will automatically light up and you will hear a “beep.” The screen will respond differently to different types of touches, so you may want to experiment with both your finger and with the stylus, which is included with the LS-90, to see what works best for you.
PG CONTROL SCREENS Before you operate the LS-90 please get familiar with these basic control screens. All the LS-90 functions are accessed through these screens. HOME pg2, MENU pg3, and MANUAL pg4. The LS-90 touch screen technology allows you to select (by touching) an item and change it using the +/buttons on the control bar. All user inputs use this method. If you want to change it, touch it. HOME Screen The HOME screen is displayed when the unit is operating.
MENU Screen The MENU screen is the gateway to many functions of the LS-90. It is displayed when you press the purple MENU button on the control bar to the right side of the screen. Note page numbers for further info about each function.
PG 4 MANUAL Screen The Manual Screen control screen is where you can make temporary changes to your LS-90’s operation. The LS-90 has 6 manual override commands. These are accessed by pressing the +/- buttons AUX heat FRESH AIR or touching the current temperature on the for HEAT Pumps for HEAT or COOL HOME screen. EMER HEAT IMPORTANT: The Mode must be in HEAT or COOL to access the manual Current Target screen.
HOLIDAY PROGRAM - This is a single program that repeats day after day until you turn it off. It supersedes the weekly program. To modify it touch PROGRAM on the MANUAL screen. It uses the Calendar method for programming (see pg7 ). VACATION - This function will hold a pre-set temperature until you turn it off. The preset is saved for next time. FRESH AIR - If you have a fresh air baffle connected to the EX terminal, the LS-90 will use this outside air source as the 1st stage of heating or cooling.
PG MENU Functions INTERVIEW SCREEN Scroll control PROGRAM The LS-90 is designed for fast and easy programming with a simple, onscreen interview . Just answer the questions and the LS-90 takes care of the rest. A calendar option is also available for fine-tuning. HEAT and Cool are programmed separately. Programming Using the Interview Method (Fastest and Easiest ): Interview 1. Make sure the LS-90 is in either HEAT or Scroll control Calendar COOL using the MODE button . 2.
The LS-90 will generate a simple program for you. It will assume you are home on the weekend and just apply your wake-up and evening temp choices. Your LS-90 is now programmed and ready to go. No additional updates are needed. If you would like to fine-tune the LS-90 programming, including adding or deleting time periods, or reviewing your schedule, please refer to the instructions that follow regarding programming using the Calendar method.
PG PROGRAM cont. 4. You can ADD additional time slots (up to seven in a day) by touching a blank line, and then adjusting the time and temperature with the +/- buttons. To DELETE a time slot, highlight and then touch the TRASH CAN icon in the lower left of the screen . 5. Touch the left < or right > arrows next to the day of the week to go to the next or previous day and continue programming. To COPY one day’s programming to the next day, touch COPY> on the bottom right of the screen.
To set/adjust HVAC CYCLING: 1. Press Menu and then touch “COMFORT.” 2. Touch the temp offset setting. 3. Use the +/- buttons to raise or lower the variance setting—from 0.5° to 2.0° F. 4. Press HOME to return to the Home screen. 2ND STAGE ON AT : This feature allows you to adjust the settings that control second stage heating and cooling depending upon the climate you live in. This can be modified for maximum efficiency or comfort. It is displayed if you have configured a multistage system in HVAC SET-UP.
PG HUMIDITY The LS-90 has a humidistat to control an external humidifier for humidifying by the H terminal. HUMIDITY 10 touch toggles thru OFF, W/ heat, . ALWAYS 12:30pm 77 HUMIDIFR MIN --% HUMIDIFR - To set a minimum humidity level (with a humidifier installed in the HVAC) from the HOME screen: DE-HUMID 1. Press MENU, then touch the HUMIDITY BY A/C MAX --% 2. Toggle HUMIDIFR from to . 3. Touch MIN --% and use the +/- buttons to set the desired EXTERNL MAX 99% minimum humidity level.
EXTERNAL DE-HUMID - The LS-90’s humidistat can also control an external de-humidifier, if you have a dehumidifier unit installed in your HVAC system. Connect it to the DH terminal. To set a maximum humidity level: 1. Press MENU, then touch the HUMIDITY. 2. Touch MAX --% and use the +/- buttons to set the desired maximum humidity level. 3. Press HOME to return to the HOME screen. CONSUMABLES Consumables are parts of your HVAC system that get used up; like filters and UV bulbs.
PG HVACSET-UP HVAC SET-UP allows you to configure the LS-90 to control your HVAC system. The LS-90 will control most residential systems. Take care to correctly set-up the LS-90. Incorrect set-up can result in damage to your HVAC system. HVAC SET-UP 12:30pm WED 77 HEAT or COOL STAGES [1] NORMAL [1] HEAT PUMP [NONE] AUXILIARY AUX ELECT or GAS-OIL FAN CTRL TSTAT BACK> IMPORTANT: Make sure the LS-90 is powered up and is in the OFF the Power button and select OFF.) mode before set-up.
3. Select the number of stages of compression for your cooling system (1 or 2) by touching the number of STAGES and using +/- buttons to change. NOTE: If your system does not have A/C select NONE as your number of stages and you won’t be bothered with on-screen cooling messages 4. Touch to select the appropriate FAN CONTROL setting HVAC or TSTAT. NOTE: Most cooling systems require that the thermostat TSTAT control the fan. 5. Press HOME to return to the Home screen.
PG NETWORK Refer to your NETWORK system manual. INFORMATION Displays info and interactive screens from a network source. Refer to your NETWORK system manual. LOCK The LS-90 has 2 lock features. These control the users ability to change the temperature and other settings of the LS-90. LOCK 12:30pm WED 74 To lock and/or control the ability to change the LS-90: LOCK OFF LOCK icon in the lower right of 1. Press MENU and then touch the screen. PARTIAL Range +/- 4F 2.
Calibrate controls CALIBRATE Your thermostat was accurately calibrated at the factory to ±1° F of actual ambient temperature. You do have the option, however, to change the display temperature to match that of a previous thermostat, or to match another thermostat already in your home, from ±1 - 9°F (±1-5°C). CALIBRATE DELTA FACTOR -2 1 2 : 3 0 pm 7 7 W ED o F ACTUAL TEMP DISPLAYED TEMP 7 7. BACK> MENU To change your Thermostat Calibration: 1. Press MENU and then touch CALIBRATE 2.
PG Save Energy Button SAVE ENERGY FAN The “Save Energy” feature on the LS-90 provides a simple, easycontrol to-use way to help you manage your energy use. SAVE ENERGY NORMAL $0.05 KW automatically adjusts your target temperature up [in COOL] or A 12:30pm 5/25 WED down [in HEAT] by a saved value degrees (four degrees is the o 77 F default). 23 -To use Save Energy, simply press Save Energy button in the Power Status HEAT MENU Normal $ .
ON: To manually turn ON the fan, touch the FAN icon and then touch ON. The FAN icon will begin turning and the fan will run continuously until switched to AUTO. Fan ON function is available in OFF mode to allow simple ventilating. POWER BUTTON and MODE selection The power button brings up your mode selection options: COOL HEAT AUTO OFF COOL - This will operate the cooling portion of your HVAC system until it is turned off.
PG NETWORK The NETWORK button allows you to identify the network you are connected with and further manage your settings. You can connect your LS-90 to an AMI network for In Home Display of electric meter data or connect to a Home Automation network for HA functionality with remote access to your HVAC system and home conditions. To Insert a RTM-1 radio module: 1. Power off the LS-90 2. Insert the the radio module in either slot on the back of the LS-90. 3. Power up LS-90.
INFORMATION This MENU function displays information and interactive screens from a network source. The network can display interactive information screens, poll users, and display electrical rate and usage information from your utility or enabled power meter. Home automation systems can also utilize the INFORMATION function for interactive and informative messages. They can display text and alpha numeric information on energy use, HVAC status, and other network connectivity.
