Instructions / Assembly

ManualsBrandsEmerson ManualsThermostat1F78-151

Failure to follow and read all instructions carefully

before installing or operating this control could cause

personal injury and/or property damage

Installation Instructions for

Heating & Air Conditioning

1F78

5/2 Day Programmable Thermostat

CONTENTS

Preparations .................................................. 1

Thermostat Details ........................................ 1

Removing Old Thermostat ............................. 1

Mounting and Wiring ...................................... 2

Check Thermostat Operation ......................... 3

Programming your Thermostat ...................... 4

Speciﬁcations ................................................ 6

Troubleshooting ............................................. 6

THERMOSTAT DETAILS

HAND OR POWER

DRILL WITH 3/16 INCH

DRILL BIT, IF NEEDED

FLAT BLADE SCREWDRIVER

WIRE CUTTER/STRIPPER

PREPARATIONS

To prevent electrical shock and/or equipment damage,

disconnect electrical power to the system at the main fuse

or circuit breaker until installation is complete.

CAUTION

Before removing wires from old thermostat’s switching subbase,

label each wire with the terminal designation it was removed

from.

1. Remove Old Thermostat: A standard heat/cool thermostat

consists of three basic parts:

a. The cover, which may be either a snap-on or hinge type.

b. The base, which is removed by loosening all captive screws.

c. The switching subbase, which is removed by unscrewing

the mounting screws that hold it on the wall or adaptor plate.

2. Shut off electricity at the main fuse box until installation is

complete. Ensure that electrical power is disconnected.

3. Remove the front cover of the old thermostat. With wires still

attached, remove wall plate from the wall. If the old thermostat

has a wall mounting plate, remove the thermostat and the wall

mounting plate as an assembly.

4. Identify each wire attached to the old thermostat.

5. Disconnect the wires from the old thermostat one at a time. DO

NOT LET WIRES FALL BACK INTO THE WALL.

6. Install new thermostat using the following procedures.

PART NO. 37-6614C

Replaces 37-6614B

1027

Assemble tools required below.

REMOVING OLD THERMOSTAT

Figure 1. Thermostat base

Mounting

hole

W903 Clip to

Disable EMR

Feature

W904 Clip for

Celsius Display

Mounting

hole

Electric/Gas

Switch

NOTE: Earlier models refer to 37-7006 for jumper locations.

W905 Clip for

Hydronic System

BRC

GAS

ELEC

W904

W905

W903

www.white-rodgers.com

www.emersonclimate.com

YOUR THERMOSTAT REPLACES

Typical System Compatibility Chart 1E78

Standard Heat Only Two Wire Gas or Oil Fired Systems (24 volt) Yes

Electronic Ignition Heat Only Two Wire Systems (24 volt) Yes

Electronic Ignition Heat Only Gas or Oil Fired Systems (24 volt) Yes

Standard Heat/Cool Systems (24 volt) Yes

Heat/Cool Systems Electric Heat (24 volt) Yes

Heat Only Electric Heat Systems (24 volt) Yes

Cool Only Systems (24 volt) Yes

Heat Pump Systems (No Aux. or Emergency Heat) Yes

Hot Water Zone Heat Only (Two Wire) Systems Yes

Hot Water Zone Heat Only (Three Wire) Systems No

Line Voltage Heating or Baseboard 110/240 Volt Systems No

Millivolt Systems Floor or Wall Furnaces Yes

12 VDC Mobile Home Application Yes

Multistage Systems No

Systems Exceeding 30VAC, 1.5 Amp No

Summary of content (16 pages)

PAGE 1
CONTENTS Preparations................................................... 1 Thermostat Details......................................... 1 Removing Old Thermostat.............................. 1 Mounting and Wiring....................................... 2 Check Thermostat Operation.......................... 3 Programming your Thermostat....................... 4 Specifications................................................. 6 Troubleshooting..............................................
PAGE 2
3 REMOVING OLD THERMOSTAT CONTINUED FROM FIRST PAGE ATTENTION! This product does not contain mercury. However, this product may replace a unit which contains mercury. Do not open mercury cells. If a cell becomes damaged, do not touch any spilled mercury. Wearing non-absorbent gloves, take up the spilled mercury and place into a container which can be sealed. If a cell becomes damaged, the unit should be discarded. Mercury must not be discarded in household trash.
PAGE 3
4 MOUNTING AND WIRING CONTINUED FROM SECOND PAGE JUMPER WIRE B Y O G W RC Fan Relay Heating System B THERMOSTAT RH Y G W Cooling System Fan Relay Heating System O SYSTEM RC 24 VAC NOTE 120 VAC Neutral Hot 24 VAC Cooling System Fan Relay W RC RH Neutral Figure 5.
PAGE 4
5 CHECK THERMOSTAT OPERATION CONTINUED FROM THIRD PAGE Before you begin using your thermostat, you should be familiar with its features and with the display and the location and operation of the thermostat buttons. Your thermostat consists of two parts: the thermostat cover and the base. To remove the cover, gently pull it straight out from the base. To replace the cover, line up the cover with the base and press gently until the cover snaps onto the base.
PAGE 5
play to match your old thermostat. This can be accomplished (within a ±3° range) as follows: 1. Press PRGM and RUN buttons at the same time. or to adjust the displayed temperature to 2. Press your desired setting. 3. Press RUN to resume normal program operation. • Display Backlight — (Not available on earlier models.) The display backlight improves display contrast in low lighting conditions. Selecting backlight ON will turn the light on for a short period of time after any button is pressed.
PAGE 6
PROGRAMMING YOUR THERMOSTAT CONTINUED FROM FIFTH PAGE 6. Repeat steps 4 and 5 to select the start time and heating temperature for the 2nd heating program period. 7. Repeat steps 4 through 6 for the 3rd and 4th heating program periods. Weekday heating programs are now complete. 8. Press PRGM once. “SA SU” (indicating weekend program) will appear in the display, along with the start time for the 1st heating period and the currently programmed temperature. 9.
PAGE 7
8 TROUBLESHOOTING CONTINUED FROM SIXTH PAGE Symptom Possible Cause Corrective Action No Heat (continued) 1. Heating system requires service or raise thermostat requires replacement. Diagnostic: Set SYSTEM Switch to HEAT and the setpoint above room temperature. Within a few seconds the thermostat should make a soft click sound. This sound usually indicates the thermostat is operating properly. If the thermostat does not click, try the reset operation listed above.
PAGE 8
Homeowner Help Line: 1-800-284-2925 White-Rodgers is a division of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. www.white-rodgers.com www.emersonclimate.
PAGE 9
LÍNEA DE AYUDA PARA EL USUARIO: 1-800-284-2925 White-Rodgers es una división de Emerson Electric Co. El logotipo de Emerson es una marca comercial y una marca de servicio de Emerson Electric Co. www.white-rodgers.com www.emersonclimate.
PAGE 10
8 SOLUCIÓN DE PROBLEMAS SIGUE DE LA PÁGINA 6 Cambie las pilas y verifique que el sistema de calor/frío funcione correctamente. Si se produce un pico de voltaje, siga las indicaciones en la sección ‘Operación de reajuste’. La pantalla está en blanco y/o el 1. Pico de voltaje o descarga estática. teclado no responde 2. Es necesario cambiar las pilas. Verifique los ajustes actuales del reloj y el programa, incluidas las designaciones AM o PM para cada período.
PAGE 11
6 PROGRAMACIÓN DE SU TERMOSTATO SIGUE DE LA PÁGINA 5 5. Presione PRGM una sola vez. Aparecerá la hora de inicio y la temperatura de referencia para el 2° período de calefacción. 6. Repita los pasos 4 y 5 para seleccionar la hora de inicio y la temperatura de calefacción para el 2° período de calefacción programado. 7. Repita los pasos del 4 al 6 para el 3° y el 4° período de calefacción programados. De esta manera, se completa la programación de los períodos de calefacción semanales. 8.
PAGE 12
6 (dentro de un rango de ±3°F) para que coincida con la de su termostato anterior. Para ello, siga el procedimiento indicado a continuación: 1. Presione los botones PRGM y RUN al mismo tiempo. o para ajustar la temperatura de pantalla al 2. Presione valor deseado. 3. Presione RUN para reanudar el funcionamiento normal del programa. • Luz de fondo de pantalla — (No disponible en los modelos anteriores.) La luz de fondo mejora el contraste de la pantalla en condiciones de poca luz.
PAGE 13
5 VERIFIQUE EL FUNCIONAMIENTO DEL TERMOSTATO SIGUE DE LA PÁGINA 3 Antes de que comience a usar su termostato, debe familiarizarse con sus funciones y con la pantalla y la ubicación y funcionamiento de los diferentes botones. Su termostato consta de dos partes: la cubierta del termostato y la base. Para retirar la cubierta, tire suavemente de ella para separarla de la base. Para volver a colocarla, alinee la cubierta con la base y presione suavemente hasta que se enganche en la base.
PAGE 14
4 MONTAJE Y CONEXIONES SIGUE DE LA PÁGINA 2 CABLE DE PUENTE B O Y G Relé del ventilador W RC RH SISTEMA B O TERMOSTATO Sistema de calefacción Y Sistema de refrigeración G Relé del ventilador Neutro 120 VCA NOTA O W RC G W RC SISTEMA RH RH 24 VCA SISTEMA 120 VCA Neutro TRANSFORMADOR DE CALEFACCIÓN Vivo TRANSFORMADOR Y 24 VCA 120 VCA Neutro TRANSFORMADOR DE REFRIGERACIÓN TERMOSTATO CABLE DE PUENTE B Vivo 24 VCA 120 VCA Neutro Y O TERMOSTATO Vivo Sistema de calefac
PAGE 15
3 CÓMO RETIRAR EL TERMOSTATO VIEJO SIGUE DE LA PÁGINA 1 ¡ATENCIÓN! Este producto no contiene mercurio. No obstante, puede reemplazar una unidad que sí contiene mercurio. No abra las celdas de mercurio. En el caso de que una celda se dañe, no toque el mercurio derramado. Colóquese un par de guantes no absorbentes para recoger el mercurio derramado y viértalo en un recipiente que pueda sellarse. Si se daña una celda, debe desecharse la unidad. El mercurio no debe desecharse con los residuos domésticos.
PAGE 16
Instrucciones para la instalación del termostato programable de 5 + 2 días 1F78 para calefacción y aire acondicionado SU TERMOSTATO REEMPLAZA Typical System Compatibility Chart Sistemas de sólo calor estándar de gas o aceite de dos cables (24 voltios) Sistemas de sólo calor con encendido electrónico de dos cables (24 voltios) Sistemas de sólo calor de gas o aceite con encendido electrónico (24 voltios) Sistemas de calor/frío estándar (24 voltios) Sistemas de calor/frío eléctricos (24 voltios) Sistemas de