User manual HONEYWELL T7518A

[. . . ] Programmable Commercial Load Management Thermostat Weekday/Weekend (5-day/Saturday/Sunday) Programmable T7518A, D USER'S GUIDE 69-1623 Welcome to the world of comfort and energy savings with your new Honeywell Programmable Load Management Thermostat. This thermostat allows full weekday/weekend programming so you can set the thermostat to control the temperature in your home according to your personal schedule and preferences. When programmed according to the instructions in this guide, the features available with this thermostat will not only keep you comfortable, but will also save you energy. In addition to being programmable, this thermostat also contains a communications module. [. . . ] If you subscribe to Time-ofUse Pricing, enter offset values for the cooling season as you did for the heating season. 69-1623 Step 3--Set the System and Fan Controls After programming the thermostat, set the system and fan controls as follows: System Control The system can be set to: HEAT, COOL or OFF. Each time you press the key, the system status changes to the next setting. COOL: The thermostat will control your air conditioning system according to the schedule you programmed (heat pump in cooling mode). No status: Both the heating and air conditioning systems are off displayed. Each time you press the key, the fan status changes to the next setting. The status of the system is as follows when the associated indicator is displayed: When FAN is displayed, the fan is on continuHEAT: The thermostat will control your ously. Use this setting for improved air circulaheating system according to the schedule tion. 69-1623 11 When nothing is displayed, the fan is in AUTO mode (it comes on with the heating or cooling equipment, as needed). AUTO is the normal setting and allows a single-speed fan to turn on automatically with the air conditioner or furnace. If you have a two-speed fan, it usually runs on high with the air conditioner and on low with the furnace. OPERATING YOUR THERMOSTAT Normally you want your thermostat to run according to the program you entered; however, you can also change your program to perform the following operations. NOTE: The system control must be set to HEAT or COOL to perform the following operations. Temporarily Change Temperature Setting for the Current Period Only Press the Warmer or Cooler key until the temperature you want is displayed. The temporary setting stays in effect only until the next scheduled program change. (If you 12 69-1623 Step 4--Start the Thermostat Program To start the thermostat using the program you have just entered, press the Run Program key. subscribe to Time-of-Use Pricing, it stays in effect only until the next rate change. ) To cancel the temperature change, press the Run Program key. When a temporary temperature is in effect, the display alternates between the time/temperature and the temporary setting. Hold a Temperature Indefinitely Press the Hold Temp key and then set the temperature using the Warmer or Cooler keys. Check the Current Temperature Setting To check the current (programmed) temperature setting, press the Present Setting key. Then verify the setting you selected. 13 Check the Programs You Entered Press the Weekday Schedule or Weekend Schedule key. You can use this feature to verify that you correctly entered the program as shown in your Personal Programming Charts. Check Usage This thermostat keeps a record of the current and accumulated on-time of your heating and cooling equipment. It tracks current day usage (since midnight) and accumulated usage (since the accumulator was last cleared). If you subscribe to either of the following special programs, there may be times when it does not operate as you expect. Direct Load Control (DLC) When the thermostat is operating under DLC, the amount of time your heating/cooling system can operate is controlled by radio signal from your utility company. If you notice the 10 AM 16 temperature is higher or lower than the setting you programmed into the thermostat, check the thermostat display. [. . . ] See Operating Your Thermostat section. 22 69-1623 The room is too warm or too cool. The room is too warm or too cool. (cont. ) · If you subscribe to Real-time Pricing, you may need to adjust your offset values to provide a more comfortable temperature. If SAVING is displayed, the system is in DLC mode and your thermostat is utility controlled. · Allow time for the furnace to heat up and the fan to come on before checking for heat at the register. [. . . ]