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Getting to know your thermostat

Glow in the dark light button
Temperature Setpoint buttons
Program buttons
Fan button
System button

LCD Display

Button access door

Gently slide a screwdriver into the 

bottom edge of the badge. Gently turn 

the screwdriver counter clockwise.  The 

badge is held on by a magnet in the well 

of the battery door.  The badge should pry 

off easily.  

DO NOT USE FORCE.

About The Badge

All of our thermostats use the same universal magnetic badge.  Visit the 

company website to learn more about our free private label program.

Private Label Badge

Thermostat Quick Reference

Wiring Diagrams

Wiring Diagrams

Typical 2H/2C System: 1 Transformer

Typical 2H/2C System: 2 Transformer

Typical 3H/2C or 2H/1C Heat Pump System

Typical Heat-Only System

Typical Heat Only System With Fan

Typical Cool-Only System

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
A 24 VAC common connection is required with this thermostat.

W/E

RC
RH

Y
C

W/E

G

W2

Y2

COMPRESSOR

RELAY

FAN RELAY

AUXILIARY

HEAT RELAY 

COMPRESSOR

RELAY 2

EMERGENCY 

HEAT RELAY

COOL CHANGE

OVER VALVE

HEAT CHANGE

OVER VALVE

C

R

L2

L1

(HOT)

REMOVE JUMPER 

RC
RH

Y
C

W/E

G

W2

Y2

C

R

L2

L1

(HOT)

C

R

L2

L1

(HOT)

COMPRESSOR

RELAY

HEAT RELAY

FAN RELAY

HEAT RELAY 2

COMPRESSOR

RELAY 2

RC
RH

Y
C

W/E

G

W2

Y2

COMPRESSOR

RELAY

FAN RELAY

HEAT RELAY 2

COMPRESSOR

RELAY 2

HEAT RELAY

C

R

L2

L1

(HOT)

O
B

Magnet in door

Use the bevel on lower ridge

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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