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Reminders

Once a reminder has been turned on and set, the elapsed time can be 

checked by navigating to its tech setup step.  The elapsed time will then 

appear in the text field.  It can also be reset at that time by holding down 

the Set Time/Next Step button for 3 seconds.  Resetting an expired 

reminder can be done without entering tech setup, by holding down 

the Set Time/Next Step button for 3 seconds from the home screen.

A Note about IAQ Mode

This programmable/selectable mode will operate the fan 1-4 cycles per 

hour, 1-45 minutes per cycle. Once programmed in tech setup, to enable 

this mode select “IAQ” with the fan key.  Disable this mode by selecting 

“ON” or “AUTO” with the fan key.

Enables a reminder for the user to 

change the humidity pad.

Humidity Pad

Reminder 

Enables a reminder for the user to 

change the UV light bulb.

UV Lamp

Reminder

OFF

Use the         or         key to 

select OFF, 600, 1000, 1500, 

or 2000. These represent 

hours of heat operation.

Enables a reminder for the user 

to change the PHI Cell after 

25,000 hrs.

IAQ Cell 

Reminder

Use the         or         key to 

select OFF, or 250 (stands for 

25,000 hours).

OFF

HUM PAD 2000

OFF

UVLAMP 00000

Use the         or         key to 

select OFF, 1YEAR, 2YEAR.

OFF

OFF

Tech Setup Steps

Adjustment Options

Default

LCD Will Show

Technician Setup Menu

WIFI Technician Setup Menu

This feature allows you to set a 

minimum cooling setpoint limit. 

The setpoint temperature cannot 

be lowered below this value.

This feature allows you to set a 

maximum heating setpoint limit. 

The setpoint temperature cannot 

be raised above this value.

Heating 

Temperature 

Setpoint 

Limit

Use the         or         key to 

select the maximum heat 

setpoint.

This feature allows you to display 

temperatures in either Fahrenheit 

or Celsius.

˚F or ˚C

˚F

˚F for Fahrenheit

˚C for Celsius

You can select either a 12 or 24 

hour clock setting.

12 or 24

Hour Clock 

Select GAS for systems that 

control the fan during a call for 

heat. Select ELEC to have the 

thermostat control the fan during 

a call for heat.

Fan 

Operation

90

78

12H

12

HOUR CLOCK

GAS

ELE

Cooling 

Temperature 

Setpoint 

Limit

Use the         or         key to 

select the minimum cool 

setpoint.

44

44˚F

90˚F

HE

CO

O

F

Use the         or         key to 

select 12 or 24 hour clock.

GAS or ELEC

Note: This step will not show 

if set for heat pump.

This feature will start heating 

early to bring the building 

temperature to its programmed 

setpoint by the beginning of the 

WAKE, OCCUPIED time period. 

Morning 

Recovery

OFF

Use the         or         key to 

turn on or off. It will default 

to electric.

You can configure this thermostat 

to have a 7 day program, a 

5+1+1 program or as

nonprogrammable.

Program 

Options

5d

Use the         or         key to 

select 

7d

 for 7 day, 

5d

 for 

5+1+1, or 

0d

 for 

nonprogrammable.

5d

The display light can be 

configured to operate 3 differet 

ways. To come on only when the 

light key is pressed, when any 

key is pressed, or stay on ALL of 

the time.

The pre-occupancy 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 Steps

Allows you to put your phone 

number in the display.

You can choose ON or OFF.

Contractor 

Call Number

If selected ON, you will 

see the input screen after 

pressing

 NEXT STEP

.

Use the          or         key to 

select the desired number 

and the 

FAN

 or 

SYSTEM

 key 

to move from one character 

to another. See note below 

for operation.

Adjustment Options

Default

LCD Will Show

When any key is pressed an 

audible beep will sound.

You can choose ON or OFF.

Beep 

PRE 
OCCUPY 
FAN

Display Light

‘OFF’ - Only light key ON

‘AUTO’ - Any key ON

‘ON’ - Always ON

Time Periods

You can configure this thermostat

to have 2 or 4 programmable time 

periods per day. 4 time periods 

are Wake, Leave, Return & Sleep. 

2 Time periods are Occupied and 

Unoccupied. 

Use the          or          key to 

select 

4

 or

 2

 time periods 

per day.

4

AUTO

OFF

dL

If ON is selected the beep 

will sound.

If OFF is selected there is no 

sound.

4

AUTO

OFF

ON

b

Tech Setup Steps

Adjustment Options

Default

LCD Will Show

Contractor Call Number Note

If contractor call number is selected ON, the phone number entered will 

show in the display if there has been a continuous call for heating or 

cooling for 24 hours or if the light button is held down for 3 seconds.  To 

remove the phone number from the display, hold the light button down 

for 3 seconds. 

Technician Setup Menu

Technician Setup Menu

OFF

OFF

OFF

 

This step allows you to reset 

the thermostat to connect to a 

different WIFI network.

Provisioning

Reset

Press YES to reset.

This step resets all WIFI settings 

to factory default.

Factory 

Default 

Reset

WIFI Module

Reset

This step resets the 

communication of the WIFI 

module.

This step shows the version of 

firmware that is installed on the 

thermostat.

Firmware

Version

Press NEXT button to move to 

next step. Press DONE button 

to exit. Press and hold TECH 

button to enter ADVANCED 

TECH STEPS.

SSID 

Number

This step shows the SSID number 

of the thermostat. (Network it is 

connected to)

Press NEXT button to move to 

next step. Press DONE button 

to exit. Press and hold TECH 

button to enter ADVANCED 

TECH STEPS.

WIFI Tech Setup Steps

Adjustment Options

Default

LCD Will Show

These steps/options are only used for trouble shooting, re-setting or 

restoring to default the WIFI settings of the thermostat. They are not 

needed for installation or initial setup.

1. Press 

MENU

 button.

2. Press 

WIFI 

button. This enters the 2 informational steps.

3. At this point press and hold 

TECH 

to enter advanced settings.

4. Press 

NEXT

 to move from one to the other.

5. Press 

DONE

 or 

EXIT

 when finished.

WIFI Advanced Tech Setup Steps

Adjustment Options

Default

LCD Will Show

Press YES to reset.

Press YES to reset.

RESET
WIFI MODULE

RESET
PROVISIONING

RESET
TO DEFAULT

Содержание EWT-855i

Страница 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 ...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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 ...

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