A. Heat Pump Con®guration (Steps 3 and 4)
To set the thermostat for heat pump operation, Advanced Setup Step 3 must be con®gured to ON. Use the UP and DOWN ARROW buttons to con®gure the step. The default is OFF. Press the mode button to continue to Step 4. Step 4 is used to set the reversing valve polarity for the heat pump. The vari- able can be set to either ``B''or ``O.'' Set the reversing valve polarity to the correct value depending on the application. The default is ``O.''
NOTE: Step 4 will appear only if Step 3 is set to ON. Step 5 will appear only if Step 3 is set to OFF.
B. Electric Heat Con®guration (Step 5)
Step 5 is used to con®gure the thermostat for electric heat. The variable can be con®gured ON or OFF. The default is OFF.
NOTE: Step 5 will appear only if Step 3 is set to OFF.
C. Deadband (Step 6)
The deadband is the difference in temperature above the cool- ing set point or below the heating set point that the thermo- stat will wait before turning on the ®rst stage of heating or cooling. For example, if the cooling set point is 82 F (28 C) and the deadband is 2 degrees, the ®rst stage of cooling will not be energized until the temperature reaches 84 F (30 C). The range of values is 1 to 6 degrees. The default is 2 degrees.
D. Set Point Minimum Difference (Step 7)
The minimum difference between heating and cooling set points can be user-con®gured. The range is from 0 to 6 degrees. The default is 2 degrees. The minimum difference is enforced dur- ing Autochangeover and Program On operation.
E. Cycles Per Hour Limit (Step 8)
The number of times that heating or cooling can be ener- gized per hour can be con®gured. Set the variable to ``d'' for no limit. Set the variable to ``d1'' to disable the 5-minute com- pressor lockout. The variable can also be set from 2 to 6 cycles per hour. The default is 6 cycles per hour.
CAUTION: Damage to compressor could result if 5-minute compressor lockout is disabled or compressor is allowed unlimited cycles. Do not set thermostat Ad- vanced Setup Step 8 to ``d'' or ``dl'' unless speci®cally rec- ommended for the application.
F. Pre-Occupancy Purge Timer (Step 9)
The pre-occupancy purge allows fresh outside air to be brought into the space before the Occupied 1 time period. The timer limits the amount of time that the purge can operate. The timer can be set from 0 to 3 hours with 15-minute intervals. The default is 0 hours (disabled).
G. Backlight Display (Step 10)
The display backlight can be set to ON (always on) or OFF (turn off 8 seconds after usage). The default is ON.
H. Service Filter (Steps 11 and 12)
Step 11 allows the user to reset the Service Filter counter to zero and remove the ``SERVICE FILTER'' icon (if displayed on the thermostat screen). Press the FAN button while in Setup Step 11 and the counter is reset to zero. Press the Mode but- ton to adjust the number of hours the blower will run before the ``SERVICE FILTER'' icon is displayed. The range is 0 to 1950 hours. Set the variable to 0 to disable this function. The default is 500 hours.
I. Soft Start (Step 13)
The soft start is used when multiple units are used in an ap- plication. The soft start staggers the start up times of the units in the event of power loss and restart. Each unit should be assigned a unit ID number. The 30-second delay time is multiplied by the unit ID number to get the total soft start delay time for each unit. For example, if the unit ID number is 10, set the Soft Start function to 10, the start-up delay time is 30 seconds x 10 = 300 seconds (5 minutes). The range is 0 to 99 (ID numbers). A value of 0 disables the function. The default is 0 (ID number).
J. Farenheit/Celsius Operation (Step 14)
The thermostat can be set to operate in Fahrenheit or Cel- sius degrees. Set the variable to ``F'' for Fahrenheit opera- tion. Set the variable to ``C'' for Celsius operation. The default is ``F.''
K. Security Level (Steps 15 to 17)
The Security Level limits the actions that the user can per- form at the thermostat. There are 4 security levels. When the security level is set to ``0,'' no security will be in effect. When the security level is set to ``1,'' the set point range is limited by the settings of Steps 16 and 17. When the security level is set to ``2,'' the set point range is limited by the settings of Steps 16 and 17 and the Program On mode is always in ef- fect. When the security level is set to ``3,'' the set point range is limited by the settings of Steps 16 and 17, the Program On mode is always in effect, and set point changes are prohib- ited. The default is 0.
Security Maximum Heat Set Point (Step 16)
If the Security Level is not set to 0, the maximum heating set point will be in effect. The user will not be allowed to set the heating set point over the speci®ed value. The range of values is 35 to 99 F (1 to 37 C). The default is 80 F (27 C).
Table 2 Ð Advanced Setup Con®guration
| STEP | DESCRIPTION | RANGE | DEFAULT |
| 1* | Time of Day | 12:00 AM - | 12:00 AM |
| 11:59 PM |
| | | |
| 2* | Day of the Week | Sunday through | Monday |
| Saturday |
| | | |
| 3 | Heat Pump | Off/On | Off |
| 4 | Reversing Valve | O/B | O |
| Polarity |
| | | |
| 5 | Electric Heat | Off/On | Off |
| 6 | Deadband | 1 - 6 degrees | 2 |
| 7 | Forced Minimum | 0 - 6 degrees | 2 |
| Temperature Difference |
| | | |
| 8 | Cycles per Hour | d, d1, 2 - 6 | 6 |
| 9 | Fan Purge Timer | 0:00 - 3:00 | 0:00 |
| 10 | Thermoglow™ Backlight | Off/On | On |
| 11 | Reset Service | Ð | Ð |
| Filter Icon |
| | | |
| 12 | Service Filter | 0-1950 hrs | 500 hrs |
| Run Time |
| | | |
| 13 | Soft Start | 0 - 99 | 0 |
| 14 | Temperature Units | F/C | F |
| 15 | Security Level | 0 - 3 | 0 |
| 16 | Maximum Allowable | 35 - 99 F | 80 F (27 C) |
| Heat Set Point | (1 to 37 C) |
| | |
| 17 | Minimum Allowable | 35 - 99 F | 65 F (18 C) |
| Cooling Set Point | (1 to 37 C) |
| | |
*Accessed and con®gured through the Set Clock button.
