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69-1592–1

3

MULTISTAGE ELECTRONIC THERMOSTAT

Pub. No. 18-HD28D1-1

Fig. 3. Typical hookup of TAYSTAT 375 in a multistage

heating and cooling system.

Fig. 4. Correct wiring technique.

Mounting Thermostat

1. Engage tabs at the top of the thermostat and

wallplate. See Fig. 5.

2. Press lower edge of case to close and latch.

Using Thermostat Keys

Use thermostat keys to:

Set temperature,

Display present setting,

Configure installer setup,

Check system test,

Display outdoor temperature.

Set system operation,

Set fan operation.

See Fig. 6 for key information.

M4826

FOR WRAPAROUND
INSERTION STRIP
7/16 IN. (11 MM).

FOR STRAIGHT
INSERTION STRIP
5/16 IN. (8 MM).

Fig. 5. Mounting thermostat on wallplate.

NOTE: To remove the thermostat from the wall, first pull

out at the bottom of the thermostat; then remove
the top.

M6801

DISPLAY PRESENT 
SETTINGS AND SCROLL 
THROUGH INSTALLER 
SETUP MODES 
(INFORMATION KEY)

i

DECREASE
TEMPERATURE 
SETTING

INCREASE
TEMPERATURE 
SETTING

Fig. 6. Thermostat key locations and descriptions.

SETTINGS

System and Fan Settings

System settings control the thermostat operation as
follows:

Heat: The thermostat controls the heating.
Off: Both the heating and cooling are off.
Cool: The thermostat controls the cooling.
Auto: The thermostat automatically changes between

heating and cooling operation, depending on the
indoor temperature.

Fan settings control the system fan as follows:

On: Fan operates continuously.
Auto: Equipment controls fan.

The system default setting is Heat and the fan default
setting is Auto. Use the keyboard or system and fan
switches to change to the desired settings. See Fig. 7.

M14278

B.

  

PRESS LOWER EDGE OF CASE TO LATCH.

A.

  

ENGAGE TABS AT TOP OF THERMOSTAT AND WALLPLATE.

W2

L1
(HOT)

L2

M20272

FAN
RELAY

Y1

G

B

THERMOSTAT

HEAT
RELAY 
1

R

W1

COMPRESSOR
CONTACTOR 1

Y2

COMPRESSOR
CONTACTOR 2

TRANSFORMER

HEAT
RELAY 
2

OT

OT

OUTDOOR
SENSOR

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS 
AND OVERLOAD PROTECTION AS REQUIRED.

1

Содержание TAYSTAT 375

Страница 1: ...e product is suitable for your application 3 Installer must be a trained experienced service technician 4 After completing installation use these instructions to check out the product operation CAUTIO...

Страница 2: ...the mounting screws WIRING All wiring must comply with local electrical codes and ordinances Refer to Fig 3 for typical hookups A letter code is located near each terminal for identification CAUTION E...

Страница 3: ...NFORMATION KEY i DECREASE TEMPERATURE SETTING INCREASE TEMPERATURE SETTING Fig 6 Thermostat key locations and descriptions SETTINGS System and Fan Settings System settings control the thermostat opera...

Страница 4: ...ded off periods by providing air circulation to prevent stagnation and improved moisture removal due to increased run time Cooling Droop is most effective in mild weather conditions and during nightti...

Страница 5: ...e 2 cooling cycle rate 10 03 3 3 cph recommended 2 or 5 cph not recommended 02 or 05 02 2 cph 05 5 cph System setting adjustment 12 00 Automatic changeover 01 or 02 01 Manual changeover 02 Auto Only D...

Страница 6: ...4 85 Highest heating sepoint setting 55 to 85 Temperature range 1 F increments of heating stpoint setting Temperature range stops in cooling 35 65 Lowest cooling sepoint setting 65 to 99 Temperature r...

Страница 7: ...cool turns off 30 Stage one cool and system fan turn off Fan Equipment System Test i 40 Change from cooling to fan equipment system test 41 Fan comes on 40 Fan turns off Key Operation System Test IMP...

Страница 8: ...here Applicable Allow the outdoor temperature sensor to absorb the outdoor air for a minimum of five minutes before taking a reading With an accurate thermometer 1 F 0 5 C measure the temperature at t...

Страница 9: ...ings will not change Example Cannot set the The upper or lower temperature limits were reached Check the temperature setpoints Heating limits are 55 to 85 F 13 to 29 C Cooling limits are 65 to 99 F 18...

Страница 10: ...e room temperature Check cooling setpoint Set cooling setpoint to desired temperature Heating or cooling comes on momentarily and shuts off Heat or cool circuit is opening up or becoming high impedanc...

Страница 11: ......

Страница 12: ...Tyler TX 75711 9010 CUSTOMERASSISTANCE If after reading this guide you have any questions concerning the operation of your thermostat please call the Thermostat Customer Assistance Helpline at 1 877 8...

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