Installation Instructions for

Heating & Air Conditioning

1F78

Non-Programmable Thermostat

YOUR THERMOSTAT REPLACES

Typical System Compatibility Chart

1F78

 

 

 

 

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 Exceding 30VAC, 1.5 Amp

No

 

 

 

 

 

 

 

CONTENTS

 

Preparations

1

Thermostat Details

1

Removing Old Thermostat

1

Mounting and Wiring

2

Check Thermostat Operation

3

Specifications

5

Troubleshooting

5

1 PREPARATIONS

Assemble tools required as shown below.

FLAT BLADE SCREWDRIVER

HAND OR POWER

DRILL WITH 3/16 INCH

DRILL BIT, IF NEEDED

WIRE CUTTER/STRIPPER

Failure to follow and read all instructions carefully before installing or operating this control could cause personal injury and/or property damage

2 THERMOSTAT DETAILS

Mounting

hole

-

+

-

+

 

 

 

W RH

B

RC

Mounting

 

G

O

Y

 

 

 

 

hole

W904

 

 

 

W905

W905

 

 

 

 

 

 

 

Clip for

 

 

 

 

Hydronic

 

 

 

 

System

 

ELEC GAS

 

 

 

W904

Electric/Gas

 

 

 

Clip for

Switch

 

 

Celsius Display

 

 

 

Figure 1. Thermostat base

3 REMOVING OLD THERMOSTAT

!CAUTION

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.

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 using the labels enclosed with the new 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.

White-Rodgers is a division

PART NO. 37-6615A

of Emerson Electric Co.

 

www.white-rodgers.com

0435

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White Rodgers 1F78 installation instructions Your Thermostat Replaces, Contents, Preparations, Thermostat Details

1F78 specifications

The White Rodgers 1F78 is a versatile and advanced smart thermostat designed to provide homeowners with optimal control over their heating and cooling systems. As energy efficiency becomes increasingly crucial, the 1F78 incorporates a range of features and technologies that cater to modern comfort needs.

One of the standout characteristics of the White Rodgers 1F78 is its user-friendly interface. The large, backlit display makes it easy to read and navigate, even in low-light conditions. The intuitive controls allow users to set temperature preferences quickly, making adjustments to their comfort levels effortless.

This thermostat is equipped with programmable capabilities, allowing users to set schedules for different days of the week. Homeowners can program the 1F78 to lower temperatures when the house is empty during the day and increase them before they return home. This feature not only enhances convenience but also contributes to significant energy savings over time.

The technology behind the White Rodgers 1F78 includes advanced temperature sensors that ensure accurate readings, leading to efficient temperature regulation. This ensures that the heating and cooling systems only operate when necessary, minimizing energy consumption and costs.

Moreover, the 1F78 is compatible with multiple HVAC systems, including gas, electric, and heat pump systems, making it an ideal choice for various home setups. Its versatility extends to Wi-Fi connectivity, allowing users to monitor and adjust their home's temperature remotely via a smartphone or tablet app. This capability provides homeowners with the convenience of controlling their thermostat from virtually anywhere.

Additionally, the White Rodgers 1F78 features a smart recovery function that learns how long it takes to reach the desired temperature and adjusts the start time accordingly. This ensures that rooms reach the set temperature by the scheduled time without unnecessary overworking of the HVAC system.

In summary, the White Rodgers 1F78 thermostat stands out for its programmable nature, user-friendly interface, compatibility with various HVAC systems, and advanced technologies that optimize energy usage. With its focus on comfort and efficiency, it presents a compelling option for homeowners seeking to enhance their home environment while reducing energy costs.