Honeywell RTH2520B Owner's Manual - Page 3
Configuration Menu, Programming - manual
View all Honeywell RTH2520B manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 3 highlights
3.2 Fan Operating Mode Use the selector switch to set the fan to automatic mode (AUTO) or continuous mode (ON). Note: This switch is not used in a 2-wire installation as the fan is not connected to the thermostat in this type of installation. AUTO The fan operates only when the heating or cooling system is On (typical setting). ON The fan operates continuously. Use this setting to improve air circulation and air cleaning. 3.3 Displaying the Temperature The actual temperature is normally displayed. To view the setpoint, press once on one of the buttons. The setpoint is displayed for 5 seconds along with the icon. Note: Pressing either of the change the setpoint. buttons more than once will 3.4 Setting the Temperature Press one of the played. buttons until the desired temperature is dis- 3.5 Backlight The display illuminates for 12 seconds when the backlight button or either of the buttons is pressed. 3.6 Thermostat Control Mode 3.6.1 Manual/Permanent Hold Mode Maintains the temperature at a fixed setpoint. To place the thermostat in this mode, press [ Mode ]. The house icon will disappear. 3.6.2 Programmable Mode Maintains the temperature according to the energy-saving schedule. To place the thermostat in this mode, press [ Mode ]. The current period will be displayed. The four possible periods are: Wake up Leave for work Return home To see the default program settings, see section 5.3. Sleep Temporary Bypass If you modify the setpoint (using the buttons) when the thermostat is in Programmable mode, the thermostat will use the new setpoint for the next 2 hours. The house icon flashes during the bypass. Afterwards the thermostat will return to the temperature setting of the period currently underway. 3.7 Filter Replacement Indicator After 500 hours of operation, an icon appears to indicate that the filter needs replacement. Once the filter is replaced, press [ Filter ] for 3 seconds to remove the icon and reset the counter. 3.8 Battery Replacement Indicator Install fresh batteries immediately when the icon starts flashing. The icon flashes for 120 days before the batteries are depleted. You should replace batteries once a year or before leaving home for more than a month even if the icon has not appeared. After replacing the batteries, set the time, day and date (see sections 5.1 and 5.2). However, the temperature and program settings are saved and do not need to be re-entered. Warning: Before removing the batteries, place the system switch on the thermostat to Off. Otherwise, the heating/cooling unit might still be running even after the batteries are removed. 4. Configuration Menu DISPLAY DESCRIPTION DEFAULT OPTIONS Temperature display °F °C or °F Time display 12 h 12 h or 24 h Early start 1 Off On or Off Automatic daylight savings changeover 2 Off On or Off Heating cycles per hour 3 4 2, 3, 4, 5 or 6 4 Cooling cycles per hour 3 4 2, 3, 4, 5 or 6 5 1 When Early Start is On, the thermostat determines when to start heating or cooling so that the desired temperature is reached at the set time. 2 When this function is On, the thermostat automatically switches to daylight savings time on the second Sunday of March and to normal time on the first Sunday of November (see section 5.2). 3 Use the Heat/Cool selector switch to switch between the heating parameter and the cooling parameter. 4 For optimal heating control, use the setting that matches your system as follows: 2=30 min (steam, gravity), 3=20 min (hot water, 90%+ high-efficiency furnace), 4=15 min (gas or oil), 5=12 min (alternate setting for gas or oil), 6=10 min (electric). 5 The corresponding cooling cycle lengths are: 2=30 min., 3=20 min., 4=15 min., 5=12 min., 6=10 min. To access the configuration menu, press the backlight button for 3 seconds. To go to the next parameter (menu item), briefly press the back- light button. To modify a parameter, press . Repeat steps 2 and 3 if necessary. Press the backlight button for 3 seconds to exit the configura- tion menu. 5. Programming 5.1 Setting the Time and Day Press [ Clk ]. The hour flashes. Set the hour using . Press [ Clk ]. The minutes flash. Set the minutes using . Press [ Clk ]. The day flashes. Set the day using . (MO: Monday, TU: Tuesday, WE: Wednesday, TH: Thursday, FR: Friday, SA: Saturday and SU: Sunday). Press [ Exit ] to exit. 5.2 Setting the Date The date is needed for automatic daylight savings changeover. Press [ Clk ] for 3 seconds to display the year. RTH2520 69-1867ES-05 03-11 3/8