Page 2 - REMOVE OLD THERMOSTAT; Figure 1. Thermostat base and terminals; INSTALLATION; ATTACH BASE TO WALL; ” pilot holes, and install screw anchors in; Mounting screws
ATTENTION! This product does not contain mercury.However, this product may replace a unitwhich contains mercury. Do not open mercury cells. If a cell becomesdamaged, do not touch any spilled mercury.Wearing non-absorbent gloves, take up thespilled mercury with sand or other absorbentmaterial and pla...
Page 4 - RESET SWITCH; Figure 2. Switch locations on back of thermostat body; CONFIGURATION; SWITCHES; Figure 4. Typical Wiring for 120V Humidifier System; If you have a single stage compressor system see the diagram below.; Reset switch
RESET SWITCH See the Troubleshooting section at the endof this document for more information aboutthe function of this switch. E2/P SWITCH (DHM) TERMINALFUNCTION The E2/P switch is located on the back ofthe thermostat body (see fig. 2). This switchcontrols how the DHM terminal will beenergized. 1. I...
Page 5 - INSTALLER CONFIGURATION
INSTALLER CONFIGURATION BEFORE TURNING POWER ON, pleaseread the following instructions. Beforeoperating the system, you must configurethe thermostat to operate properly withyour equipment. The thermostat, as it comes from the factory,is configured to operate a standard multi-stage electric forced ho...
Page 6 - INSTALLER TABLE; at same time and release to enter the Configuration Menu.; Returns to Normal Operation.; Step; and
INSTALLER TABLE NOTE: You must be in the User Configuration Menu to enter the Installer Table. Firmly press TIME FWD and TIME BACK at same time and release to enter the Configuration Menu. 6 1 MLTI STG HEAT PUMP 2 HEAT PUMP (1) 2 Selects type of system. Selecting HEAT PUMP makes additional items for...
Page 7 - To turn this feature OFF, press; Lockout Bypass Option; and SET; buttons at the same time.; HEATING; Shorter
These numbers are approximate and represent operation with a typical system. Actual temperature differentials andrun times may vary widely based on your building and equipment, as well as outdoor temperature conditions. COMPRESSOR OFF DELAY Installer table, step 11 is available if thefossil fuel kit...
Page 8 - setting an item to ON, you can then use; or; to exit the menu and return to; SERVICE REMINDER; Set Humidifier Maintenance Reminder.; Service Button Menu
The Service Button Menu allows you to view or program as many as 4 reminders that indicate when service is required.1. Humidifiers = A programmable run time in hours to indicate on the LCD when the humidifier will need to be serviced.2. Air Filters = A programmable run time in hours to indicate on t...
Page 9 - CHECK THERMOSTAT OPERATION; FAN OPERATION; until FAN ON is displayed.; HEATING SYSTEM; to lower temperature; CAUTION
9 CHECK THERMOSTAT OPERATION FAN OPERATION If your system does not have a G terminalConnection, skip to HEATING SYSTEMsection below.1. Turn power on to the system.2. Press PROGRAM RUN . 3. Press FAN until FAN ON is displayed. The fan should begin to operate. 4. Press FAN until FAN AUTO is displayed....
Page 10 - No Heat; RESET BUTTON; To reset the thermostat, press and release; PROGRAM; HOLD; mode and will; Symptom; Thermostat Does Not Follow Program; TROUBLESHOOTING
No Heat/No Cool/No Fan 1. Blown fuse or tripped circuit breaker. Replace fuse or reset breaker. (Common Problems) 2. Furnace power switch to OFF. Turn switch to ON. 3. Furnace blower compartment door or Replace door panel in proper position to engage panel loose or not properly installed. safety int...
Page 12 - FAQs; What is the thermostat Click Test?
The Emerson logo is atrademark and a service mark of Emerson Electric Co. Why does the system run with thesetpoint and room temperature thesame? How do I temporarily Override theprogram and Hold Til Timing? In cooling, as the room temperature falls you will eventually reach the setpoint tem-perature...