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Set Program Schedule For Two Time Periods

1. 

 Select 

HEAT 

or

 COOL 

with the system key. 

      

Note: 

You have to program heat and cool each separately. 

2.

  Press the 

MENU

 button (If menu does not appear first, press 

      

RUN SCHED

).

3.

  Press 

SET SCHED

.  

Note:

 Monday-Friday 

( Monday if in 7 day)

 is 

     displayed and the 

OCCUPIED 

text is shown. You are now program

     ming the 

OCCUPIED

 time period for that day.

4.

  Time is flashing.  Use the             or              key to make your time 

      selection for that day’s 

OCCUPIED

 time period.  

     

 Note:

 If you want the fan to run continuously during this time

      period, select 

ON

 with the 

FAN 

key. If you want to use 

IAQ

 

      mode during this time period, select 

IAQ

 with the fan key.

5.

  Press 

NEXT.

6.

  The setpoint temperature is flashing.  Use the            or             key 

      to make your setpoint selection for that day’s 

OCCUPIED

      period.

7.

  Press 

NEXT.

8.

  Repeat steps 4 through 7 for that day’s 

UNOCCUPIED

  

      time period.

To customize your 5+1+1 Program schedule, follow these steps:

Weekday:

(OCCUPIED, UNOCCUPIED)

Programming

Programming

Repeat steps 4 through 7 for the Saturday 

WAKE/OCC1 

time period, for the 

Saturday 

LEAVE/UNOCC1

 time period, for the Saturday 

RETURN/OCC2

 

time period, and for the Saturday 

SLEEP/UNOCC2

 time period.

Saturday:

Repeat steps 4 through 7 for the Sunday 

WAKE/OCC1 

time period, for the

Sunday 

LEAVE/UNOCC1

 time period, for the Sunday 

RETURN/OCC2

 time 

period, and for the Sunday 

SLEEP/UNOCC2

 time period.

Sunday:

A Note About Auto Changeover:

When in Auto you have the ability to switch between auto heat or auto 

cool by pressing the system key. This can be done once the current 

mode has reached its setpoint. For example: if in auto heat, the heat 

setpoint must be satisfied before the thermostat will allow you to switch 

to auto cool. You can switch out of auto by holding down the system 

key. To get back into auto, you must toggle the system key to auto.

To customize your 7 day Program Schedule, repeat 

steps 4 through 8 for the Tuesday, Wednesday, Thursday, 

Friday, Saturday and Sunday time periods.

Continued on next page...

Summary of Contents for CT855S

Page 1: ...Operation Manual Operation Manual ...

Page 2: ...ntents Thermostat Operation Thermostat Quick Reference Programming Features Warranty Information Page 2 3 4 7 8 12 1 Una version en español de este manual se puede descargar en la pagina web de la compañia Equipment damage hazard Do not operate the cooling system if the outdoor temperature is below 50 F 10 C to prevent possible compressor damage Caution Rev 1809 13 14 15 P O Box 3377 Springfield M...

Page 3: ... continuously The AUTO setting will cycle the fan on only when the heating or cooling system is on IAQ will enable IAQ FAN MODE if programmed Selects the operation mode on your HVAC system Selecting HEAT turns on the heat mode Selecting COOL turns on the cool mode Selecting OFF turns both heating and cooling off Selecting AUTO will turn the HEAT or COOL on as needed EM HEAT will appear as an optio...

Page 4: ... either of these it will hold for 4 hours then return to either 55 F or 85 F After day 63 the batteries must be replaced immediately to avoid freezing or overheating because the thermostat will shut the unit off until the batteries are changed Important Battery Door Information When the battery icon appears replace your AA batteries immediately Failure to do so may result in your heating cooling s...

Page 5: ...ayed when the thermostat program is permanently overridden System Operation Indicators If these or the Fan indicator are flashing it means that they are in a delay of some type compressor delay cooling fan delay staging delay 1 2 3 7 9 Low Battery Indicator Replace batteries when this indicator is shown Program Menu Options Show different options during programming Program Time Periods Residential...

Page 6: ...C1 time period Note If you want the fan to run continuously during this time period select ON with the FAN key If you want to use IAQ mode during this time period select IAQ with the fan key 5 Press NEXT STEP 6 The setpoint temperature is flashing Use the or key to make your setpoint selection for that day s WAKE OCC1 period 7 Press NEXT STEP 8 Repeat steps 4 through 7 for that day s LEAVE UNOCC1 ...

Page 7: ...ogram schedule follow these steps Weekday OCCUPIED UNOCCUPIED Programming Programming Repeat steps 4 through 7 for the Saturday WAKE OCC1 time period for the Saturday LEAVE UNOCC1 time period for the Saturday RETURN OCC2 time period and for the Saturday SLEEP UNOCC2 time period Saturday Repeat steps 4 through 7 for the Sunday WAKE OCC1 time period for the Sunday LEAVE UNOCC1 time period for the Su...

Page 8: ...int will then replace your temporary setpoint Permanent Hold With a temporary hold set if you press the HOLD key at the bottom of your screen you will see HOLD appear below the setpoint temperature in the display The thermostat will now permanently stay at this setpoint and can be adjusted using the or keys To Return To Program Press the RUN SCHED key at the bottom of your screen to exit temporary...

Page 9: ...gistration Complete form and mail to Thermostat Warranty Registration Online Mail Filter Change Other Reminders This thermostat also has other maintenance reminders Humidity Pad UV lamp and IAQ Cell that are reset with the same procedure Features If your HVAC contractor has configured the thermostat to remind you when the air filter needs changed you will see a reminder in the display when your ai...

Page 10: ...www pro1iaq com Cut Out For Warranty Registration ...

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