| Typical System Compatibility Cha_rt | |
| Standard Heat Only Two Wire Gas or Oil Fired.Systems (24′ ‘{Q!tl | Yes |
| Electronic Ignition Heat Only Two Wire Systems (24 volt) | Yes |
| Electronic Ignition Heat Only Gas or Oil Fired Systems (24 volt) | Yes |
| Standard Heat/Cool Systems (24 volt) | Yes |
| Heat/Cool Systems Electric Heat (24 volt) | Yes |
| Heat Only Electric Heat Systems (24 volt) | Yes |
| Cool Only Systems (24 volt) | Yes |
| Heat Pump Systems (No Aux or Emergency Heat) | Yes |
| Hot Water Zone Heat Only (Two Wire) Systems | Yes |
| Hot Water Zone Heat Only (Three Wire) Systems | No |
| Line Voltage Heating or Baseboard 110/240 Volt Systems | No |
| Millivolt Systems Floor or Wall Fumaces | Yes |
| 12 voe Mobile Home Application | Yes |
| Multistage Systems | No |
| Systems Exceding 30VAC, 1.5 Amp | No |
PREPARATIONS
Assemble tools required as shown below.
Failure to follow and read all instructions carefully before installing or operating this control could cause personal injury and/or property damage
REMOVING OLD THERMOSTAT
CAUTION
To prevent electrical shock and/or equipment damage, disconnect electrical power to the system at the main fuse or circuit breaker until installation is complete.
Before removing wires from the old thermostat’s switching subbase, label each wire with the terminal designation it was removed from.
REMOVING THE OLD THERMOSTAT CONTINUED FROM THE FIRST PAGE
ATTENTION! This product does not contain mercury. However, this product may replace a unit that contains mercury. Do not open mercury cells. If a cell becomes damaged, do not
touch any spilled mercury. Wearing non-absorbent gloves, take up the spilled mercury and place it into a container that can be sealed. If a cell becomes damaged, the unit should be discarded. Mercury must not be discarded in household trash. When the unit this product is replacing is to be discarded, place in a suitable container and return to White-Rodgers at 2895 Harrison Street, Batesville, AR, 72501 for proper disposal.
MOUNTING AND WIRING
WARNING
Heat Pump Systems
This thermostat is configured from the factory to operate a heat cool, fossil fuel (gas, oil, etc.), forced air system. It is configured ‘correctly for any system that DOES NOT require the thermostat to energize the fan on a call for heat. If your system is an electric or heat-pump system that REQUIRES the thermostat to turn on the fan on a call for heat, locate the GAS/ELECTRIC switch (see fig. 1) and switch it to the ELECTRIC position. This will allow the thermostat to energize the fan immediately on a call for heat. If you are unsure if the heating/cooling system requires the thermostat to control the fan, contact a qualified heating and air conditioning service person.
Hydronic (Hot Water or Steam)
Heating Systems
This thermostat is set to operate properly with a forced-air heating system. If you have a hydronic heating system (a system that heats with hot water or steam), you must set the thermostat to operate properly with your system. The factory default setting is forced air heat. Clipping jumper W905 on the circuit board will produce a longer heating cycle which is normal for hot water or steam (hydronic) systems. Both settings produce a very accurate temperature control and can be set to your personal preference. As received, the thermostat cycles the system just under 1 ‘ F. With W905 clipped, the system cycles at approximately 1.5’F
CAUTION
Take care when securing and routing wires so they do not short to adjacent terminals or the rear of the thermostat. Personal injury and/or property damage may occur.
Energy Management Recovery (EMR)
This thermostat is set to operate with EMA. This causes the thermostat to start the heating or cooling system early to have the room temperature reach the program setpoint at the time
the period is to start. To disable EMR, clip jumper W903 (see Fig. 1).
Battery Location
This thermostat requires 2 “AAA” alkaline batteries to operate. If the word LO BATTERY is displayed, the batteries are low and should be replaced with fresh “AAA” Energizer4!’ alkaline batteries. To replace the batteries, install the batteries along the top of the base (see fig. 1 ). The batteries must be installed with the positive(+) ends to the right.
CONTINUED. FROM SECOND PAGE
CHECK THERMOSTAT OPERATION
NOTE
To prevent static discharge problems, touch the side of the thermostat to release static build-up before touching any keys. If at any time during testing your system does not operate properly, contact a qualified service person.
Fan Operation
If your system does not have a G terminal connection, skip to Heating System.
Cooling System
CAUTION
To prevent compressor and/or property damage, if the outdoor temperature is below 50° F, DO NOT operate the cooling system
This thermostat has a time delay between cooling cycles to allow the head pressure in the compressor to stabilize. If the temperature is adjusted to call for cool within 5 minutes of the last cycle the snowflake icon will blink indicating the thermostat is locked out. After 3 to 5 minutes, the compressor will start and the snowflake icon will stop flashing. This helps prevent the compressor from cycling too quickly and is a normal operation for the thermostat.
Heating System
Before you begin programming your thermostat, you should be familiar with its features and with the display, and the location and operation of the thermostat buttons. Your thermostat consists of two parts: the thermostat cover and the base. To remove the cover, gently pull it straight out from the base. To replace the cover, line up the cover with the base and press gently until the cover snaps onto the base.
The Thermostat Buttons and Switches
Now that you are familiar with the thermostat buttons and display, read the following information to learn about the many features of the thermostat.
SIMULTANEOUS HEATING/COOLING PROGRAM STORAGE
When programming, you can enter both your heating and cooling programs at the same time. There is no need to reprogram the thermostat at the beginning of each season.
TEMPERATURE OVERRIDE
Press
HOLD TEMPERATURE
The thermostat can hold any temperature within its range for an indefinite period, without reverting to the programmed temperature. Press HOLD
HOLD will be displayed. Then choose the desired temperature by pressing ~ or ~- The thermostat will hold the room temperature at the selected setting until you Press the RUN button to start the program operation again.
ENERGY MANAGEMENT RECOVERY– Energy Management Recovery (EMR) causes the thermostat to start heating or cooling early to make the building temperature reach the
program setpoint at the time you specify. Heating will start 5 minutes early for every 1° of temperature required to reach setpoint.
Example: You select EMA and have your heating programmed to 65° at night and 70° at 7 AM. If the building ~perature is 65° the difference between 65° and 70° is 5°. Allowing 5 minutes per degree the thermostat setpoint will change to 70° at 6:35 AM. Cooling allows more time per degree because it takes longer to reach temperature.
°F/°C CONVERTIBILITY – The factory default setting is Fahrenheit. Clipping the W904 jumper on the circuit board (see fig. 1) will alter this feature to the Celsius temperature setting.
LOW BATTERY INDICATOR-If the 2 “AAA” alkaline batteries are low and should be replaced, the display will be blank except for “LO BATTERY”. When the batteries are low, pressing
any button will cause the display to operate for ten seconds. After ten seconds, the display will return to blank except for
“LO BATTERY”. After “LO BATTERY” has been displayed for 4 weeks, the thermostat will raise the temperature 10 degrees above your setpoint on “COOL” mode and will drop the temperature 10 degrees below your setpoint on “HEAT” mode. You cannot program with low batteries, but you can override the setpoint temperature.
TEMPERATURE DISPLAY ADJUSTMENT – Your new thermostat has been accurately set in our factory. However, if you wish, you may adjust your new thermostat temperature
display to match your old thermostat. This can be accomplished (within a ±3° range) as follows:
This section will help you plan your thermostat’s program to meet
your needs. For maximum comfort and efficiency, keep the
following guidelines in mind when planning your program.
Look at the factory preprogrammed times and temperatures are shown below. If this program will suit your needs, simply press the RUN button to begin running the factory preset program. If you want to change the preprogrammed times and temperatures, follow these steps. Determine the time periods and temperatures for your weekday and weekend programs. You must program four periods for both the weekday and weekend programs. However, you may use the same heating and cooling temperatures for consecutive time periods. You can choose start times, heating temperatures, and cooling temperatures independently for both weekday and weekend programs (for example, you may select 5:00 AM and 70° as the weekday 1st-period heating start time and temperature, and also choose 7:00 AM and 76° as the weekday 1st period cooling start time and temperature). Use the table at the bottom of the page to plan your program time periods and the temperatures you want during each period. You may also want to look at the sample program table to get an idea of how the thermostat can be programmed.
Entering Your Program
Follow these steps to enter the heating and cooling programs you have selected.
SAMPLE
Heating/Cooling Schedule Plan (Factory Program)
|
Period | WEEKDAY (5 DAV) | WEEKEND (2 DAY) | |||
| Start Time | Temperature | Start Time | Temperature | ||
|
w :::c | 1ST | 6:00AM | 70 F | 6:00AM | 70 F |
| 2ND | 8:00AM | 62 F | 8:00AM | 62 F | |
| 3RD | 5:00 PM | 70 F | 5:00 PM | 70 F | |
| 4TH | 10:00 PM | 62 F | 10:00 PM | 62 F | |
|
..J 0 0 0 | 1ST | 6:00AM | 78F | 6:00AM | 78 F |
| 2ND | 8:00AM | 85 F | 8:00AM | 85 F | |
| 3RD | 5:00 PM | 78 F | 5:00 PM | 78 F | |
| 4TH | 10:00 PM | 82 F | 10:00 PM | 82 F | |
Set Current Time and Day
Enter Heating Program
This display window shows that for the 1st weekday period, the start time is 6:00 AM, and 70° is the programmed temperature (this example reflects factory preprogramming).
Heating/Cooling Schedule Plan
|
Period | WEEKDAY (5 DAY} | WEEKEND (2 DAY) | |||
| Start Time | Temperature | Start Time | Temperature | ||
|
w :::c | 1ST | ||||
| 2ND | |||||
| 3RD | |||||
| 4TH | |||||
|
..J 0 0 0 | 1ST | ||||
| 2ND | |||||
| 3RD | |||||
| 4TH | |||||
PROGRAMMING YOUR THERMOSTAT
CONTINUED FROM THE FIFTH PAGE
Enter Cooling Program
If the outside temperature is below 50°F, disconnect power to the cooling system before programming. Energizing the air conditioner compressor during cold weather may cause personal injury or property damage.
Check Your Programming
Follow these steps to check your thermostat programming one
final time before beginning the thermostat operation.
YOUR l’.HERMOS-T AT IS NOW COMPLET-EL-Y J>ROGRAMMEDAND READY TO AUTOMATICALLY PROVIDE MAXIMUM COMFORT AND EFFICIENCY!
SPECIFICATIONS
ELECTRICAL DATA
Electrical Rating: 0 to 30 VAC 50/60 Hz. or D.C. 0.05 to 1.2 Amps (Load per terminal)
1.5 Amps Maximum Total Load (All terminals combined
THERMAL DATA
Reset Operation
If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation you can reset the thermostat by pressing, and TIME at the same time. This also resets the factory defaults. If the thermostat has power, has been reset and still does not function correctly contact your heating/ cooling service person or place of purchase.
Batteries
For optimum performance, we recommend replacing batteries once a year with fresh “AAA” Energizer alkaline batteries.
| Symptom | Possible Cause | Corrective Action |
| No Heat/No Cool/No Fan (common problems) | 1. Blown fuse or tripped circuit breaker. 2. Furnace power switch to OFF. 3. Furnace blower compartment door or panel loose or not properly installed. | Replace fuse or reset the breaker. Tum switch to ON. Replace door panel in proper position to engage safety interlock or door switch. |
| No Heat | 1. Pilot light not lit. 2. System Switch not set to Heat.
3. Loose connection to thermostat or system.
4. Furnace Lock-Out Condi tion. Heat may also be intermittent. | Re-light pilot. Set System Switch to Heat and raise temperature above room temperature. Verify thermostat and system wires are securely attached. Many furnaces have safety devices that shut down when a lock-out condition occurs. If the heat works intermittently contact the furnace manufacturer or local service person for assistance. |
| Symptom | Possible Cause | Corrective Action |
| No Heat (continued) | 5. Heating system requires service or the thermostat requires replacement. | Diagonistic: Set System Switch to Heat and raise the setpoint above room temperature. Within a few seconds, the thermostat should make a soft click sound. This sound usually indicates the thermo stat is operating properl.yIf the thermostat does not click, try the reset operation listed above. If the thermostat does not click after being reset contact your heating and cooling service person or place of purchase for a replacement. If the thermostat clicks, contact the furnace manufacturer or a service person to verify the heating is operating correctly. |
| No Cool – r- | 1. System Switch not set to Cool. :—:— – —, 2. Loose connection fo thermostat or system.
3. Cooling system requires service or the thermostat requires replacement. | Set System Switch to Cool and lower temperature below room temperature. Verify thermostat and system wires are securely attached. _ Same procedure as diagnostic for No Heat condition except set the thermostat to Cool and lower the setpoint below the room temperature. There may be up to a five-minute delay before the thermostat clicks in Cooling. |
| Heat, Cool or Fan Runs Constantly. | 1. Possible short in wiring. 2. Possible short in thermostat. 3. Possible short in heat/cool/fan system. 4. Fan Switch set to Fan On. | Check each wire connection to verify they are not shorted or touching together.rNo bare wire should stick out from under terminal screws. Try resetting the thermostat as described above. If the condition p rsists the manufacturer of your system or service person can instruct you on how to test the Heat/Cool system for correct operation. If the system operates correctly, replace the thermostat. |
| Furnace Cycles Too Fast or Too Slow (narrow or wide temperature swing) | 1. The location of the thermostat and/or the size of the Heating System may be influencing the cycle rate. | Digital thermostats normally provide precise temperature control and may cycle faster than some older mechanical models. A faster cycle rate means the unit turns on and off more frequently but runs for a shorter time so there is no increase in energy use. If you would like to increase the cycle time, clip Jumper W-905 as mentioned in the instructions for Hydronic Heating Systems. It is not possible to shorten the cycle time. If an acceptable cycle rate is not achieved as received or by clipping W-905 contact a local service person for additional suggestions. |
| Cooling Cycles Too Fast or Too Slow (narrow or wide temperature swing) | 1. The location of the thermostat and the size of the Cooling System can influence the cycle rate. | The cycle rate for cooling is fixed and can not be adjusted. Contact a local service person for suggestions. |
| Thermostat Setting and Thermostat Thermometer Disagree | 1. Thermostat thermometer setting requires adjustment. | The thermometer can be adjusted +/- 3 degrees. See Temperature Display Adjustment in the Operation section. |
| The thermostat Does Not Follow the Program | 1. AM or PM set incorrectly in the program. 2. AM or PM set incorrectly on the clock. 3. Voltage spike or static discharge. | Check current clock and program settings including the AM or PM designations for each time period. If a voltage spike or a static discharge occurs use the Reset Operation listed above. |
| Blank Display and/or Keypad Not Responding | 1. Voltage spike or static discharge. 2. Battery change required. | Replace batteries and check the heat/cool system for proper operation. If a voltage spike occurs use the Reset Operation listed above. |
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