background image

Programming

Programming

Set Program Schedule For Four Time Periods

1. 

 Select 

HEAT 

or

 COOL 

with the system switch. 

      

Note: 

You have to program heat and cool each separately. 

2.

  Press the 

MENU

 button (If menu does not appear first press 

      

RUN

).

3.

  Press 

SCHED

.  

Note:

 Monday-Friday is displayed and the

      

WAKE

 icon is shown. You are now programming the 

      

WAKE

 time period for that day.

4.

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

      selection for the weekday 

WAKE

 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 the weekday 

WAKE

 period.

7.

  Press 

NEXT.

8.

  Repeat steps 4 through 7 for the weekday 

LEAVE

     

 time period, for the weekday 

RETURN 

time period, 

      and for the weekday 

SLEEP

 time period.

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

Weekday:

Repeat steps 4 through 7 for the Saturday 

WAKE 

time period, for the 

Saturday 

LEAVE

 time period, for the Saturday 

RETURN

 time period, 

and for the Saturday 

SLEEP

 time period.

Saturday:

Repeat steps 4 through 7 for the Sunday 

WAKE 

time period, for the 

Sunday 

LEAVE

 time period, for the Sunday 

RETURN

 time period, and 

for the Sunday 

SLEEP 

time period.

Sunday:

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

).

3.

  Press 

SCHED

.  

Note:

 Monday is displayed and the

      

WAKE

 icon is shown. You are now programming the 

      

WAKE

 time period for that day.

4.

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

      selection for that day’s 

WAKE

 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 

WAKE

 period.

7.

  Press 

NEXT.

8.

  Repeat steps 4 through 7 for that day’s 

LEAVE 

time period,

      for that day’s 

RETURN 

time period, and for that day’s 

      

SLEEP

 time period.

To customize your 7 day Program schedule, follow these steps:
Monday:

(WAKE, LEAVE, RETURN, or SLEEP)

Repeat steps 4 through 8 for the remaining days of the week.

A Note About Auto Changeover:

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.

Default Programming

Factory Default Program

Day of 

the Week

Events

Time

Setpoint 

Temperature

(HEAT)

Setpoint 

Temperature

(COOL)

Weekday

Saturday

Sunday

Wake

Leave

Return

Sleep

Wake

Leave

Return

Sleep

Wake

Leave

Return

Sleep

6 AM

8 AM

6 PM

10 PM

6 AM

8 AM

6 PM

10 PM

6 AM

8 AM

6 PM

10 PM

70

˚

F (21

˚

C)

62

˚

F (17

˚

C)

70

˚

F (21

˚

C)

62

˚

F (17

˚

C)

70

˚

F (21

˚

C)

62

˚

F (17

˚

C)

70

˚

F (21

˚

C)

62

˚

F (17

˚

C)

70

˚

F (21

˚

C)

62

˚

F (17

˚

C)

70

˚

F (21

˚

C)

62

˚

F (17

˚

C)

75

˚

F (24

˚

C)

83

˚

F (28

˚

C)

75

˚

F (24

˚

C)

78

˚

F (26

˚

C)

75

˚

F (24

˚

C)

83

˚

F (28

˚

C)

75

˚

F (24

˚

C)

78

˚

F (26

˚

C)

75

˚

F (24

˚

C)

83

˚

F (28

˚

C)

75

˚

F (24

˚

C)

78

˚

F (26

˚

C)

Programming

Programming

Set Time

Follow the steps below to set the day of the week and current time:

1. 

 Press the 

MENU

 button.

2.

  Press 

TIME.

3.

  Day of the week is flashing. Use the              or              key to 

      select the current day of the week.

4.

  Press 

NEXT.

5.

  The current hour is flashing.  Use the              or               key to  

      select the current hour.  When using 12-hour time, make sure

      the correct a.m. or p.m. choice is selected.

6.

  Press 

NEXT.

7.

  Minutes are now flashing.  Use the              or              key to 

      select current minutes.

8.

  Press 

DONE

 when completed.

All our programmable thermostats are shipped with an energy saving default 

program. You can customize this default program by following the 

instructions in the 

set program schedule section

 starting on page 24.

Programming

Your thermostat can be programmed to have each day of the week 

programmed uniquely (7 days), all the weekdays the same with a separate 

program for Saturday and a separate program for Sunday (5+1+1), or 

non-programmable. For the 7-day and 5+1+1 programming modes, there are 

two time period options. 

1. “4” Residential 

(WAKE, LEAVE, RETURN, SLEEP) 

2. “2” Commercial 

(OCCUPIED, UNOCCUPIED) 

This thermostat has a programmable fan feature, which allows you to run the 

fan continually during any time period.

Summary of Contents for EWT-855i

Page 1: ...provided 3 Drywall anchors should be flush with the wall 4 Wires should be pushed into the wall Installation Tips The thermostat should be installed approximately 4 to 5 feet above the floor Select an area with average temperature and good air circulation Close to hot or cold air ducts That are in direct sunlight With an outside wall behind the thermostat In areas that do not require conditioning ...

Page 2: ... electrical shock or equipment damage Note In many heat pump systems with no emergency heat relay a jumper can be installed between E and W2 to turn thermostat into a single stage control for Emergency Heat Operation Thermostat Quick Reference Indicates the current room temperature Time and day of the week Staging Indicators Indicates stages of heat or cool running The compres sor delay feature is...

Page 3: ...or2H 1CHeatPumpSystem TypicalHeat OnlySystem TypicalHeatOnlySystemWithFan TypicalCool OnlySystem HEAT RELAY RC RH Y C W E G C R L2 L1 HOT FAN RELAY HEAT RELAY RC RH Y C W E G C R L2 L1 HOT FAN RELAY COMPRESSOR RELAY C R L2 L1 HOT RC RH Y C G Power supply Factory installed jumper Remove only when installing on 2 transformer systems Use either O or B terminals for changeover valve A24VACcommonconnec...

Page 4: ...rom OFF to 2000 hours of runtime in 50 hour increments Tech Setup Steps Room Temperature Calibration 0 F This feature allows the installer to select the minimum run time for the compressor For example a setting of 4 will force the compressor to run for at least 4 minutes every time the compressor turns on regardless of the room temperature You can set the minimum compressor run time to OFF 3 4 or ...

Page 5: ...ccupancy fan settings will energize the fan before the occupied time to provide ventilation prior to scheduled occupancy This feature only shows if the technician setup step for time periods is set to 2 Pre Occupancy Fan You can select the pre occupancy fan from OFF 1 2 or 3 hours If 1 2 or 3 is selected the fan will turn on that many hours prior to the scheduled occupied time period Tech Setup St...

Page 6: ... day s SLEEP time period To customize your 7 day Program schedule follow these steps Monday WAKE LEAVE RETURN or SLEEP Repeat steps 4 through 8 for the remaining days of the week A Note About Auto Changeover 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...

Page 7: ... for any time period 1 Select HEAT or COOL with the SYSTEM key Note You have to program heat and cool each seperately 2 Press the MENU button If menu does not appear first press RUN 3 Press SCHED Note Monday is displayed and the OCCUPIED text is shown You are now programming 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 ...

Page 8: ... replace the 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 key at the bottom of the screen to exit temporary and permanent holds ...

Reviews: