Attach Subbase to Wall

!CAUTION

To prevent electrical shock and/or equipment damage, disconnect electric power to system at main fuse or circuit breaker box until installation is complete.

1.Disconnect electrical power at main fuse or circuit breaker.

2.Pull wires through opening near center of subbase and connect wires beneath terminal screws (see figs. 2 through 6 for typical wiring for each application. Also refer to subsections below for special system configu- rations).

3.Push excess wiring into wall and plug hole with fire- resistant material (such as fiberglass insulation) to prevent drafts from affecting thermostat operation.

4.Position subbase over hole in wall and mark mounting hole locations on wall.

5.Drill mounting holes.

6.Fasten subbase loosely to wall, as shown, using two mounting screws. Place a level against bottom of subbase, adjust until level, and then tighten mounting screws to secure subbase. If holes in wall are too large and do not allow you to tighten subbase snugly, use plastic expansion plugs to secure subbase.

SPECIAL SYSTEM CONFIGURATIONS

Electric Heat Furnaces (Single Transformer Systems Only)

The subbase as shipped may not operate the fan cor- rectly. If both the heating and cooling system must oper- ate the fan relay, remove the yellow factory-installed jumper wire from the Y terminal and connect it to the A terminal. The fan should now cycle when the thermostat calls for either heat or cool.

Two-Transformer Systems

!CAUTION

If two transformers are used, they MUST be in phase. Failure to do so may result in personal injury and/or property damage.

NOTE

Wire color DOES NOT indicate polarity. Polarity is ob- tained from an oscilloscope or voltmeter.

Heat Pump Applications

This subbase WILL NOT provide multi-stage heating or cooling operation. For single-stage heat pump applica- tions, install a short jumper wire across terminals W and Y. If the old thermostat has a terminal that is continuously energized, disconnect the wire from the old thermostat's terminal and connect it either to the: 1) B terminal, if the reversing valve is energized on a call for heat; or to the 2) O terminal, if the reversing valve is energized on a call for cool. If the system heats on a call for cool, or vice versa, this wire has been connected to the wrong terminal.

NOTE

RH and RC must be jumpered for single transformer heat pump systems.

Special Application Terminals

The B and O terminals can provide switching for special functions other than heat pump operation. When the system switch is in the HEAT position, the B terminal is energized. When the system switch is in the COOL position, the O terminal is energized.

ATTACH THERMOSTAT TO SUBBASE

1.Remove cover from thermostat base by gripping the base in one hand. Use the other hand to pull gently at the top or bottom of the cover.

2.Carefully remove the shipping protective packing from the switch.

3.Attach thermostat base to subbase, being sure that all captive screws are tightened snugly, since they serve as electrical connections between thermostat and subbase (see fig. 7).

4.Snap cover on thermostat and set switches and temperature lever to desired set point (see OPERA- TION section).

5.Turn on power to the system.

	FAN	SYSTEM
AUTO	ON	COOL	OFF	HEAT
	G	RC
				B
O
				W
	RH	A	Y
			Y

Mounting screw KEEP THIS AREA	Hole Mounting screw
CLEAR OF WIRES	in wall

Figure 2. Thermostat subbase

1F56N-911 specifications

The White Rodgers 1F56N-911 is a highly regarded thermostat known for its efficiency and user-friendly features. This device is specifically designed to maintain optimal indoor climate control while offering energy-saving capabilities. Its sleek design and practical functionalities make it a preferred choice for homeowners looking to enhance their HVAC systems.

One of the standout features of the 1F56N-911 is its digital display, which provides clear, easy-to-read temperature settings. The large LCD screen enables users to quickly view and adjust the temperature without any hassle. Furthermore, it comes equipped with a set of intuitive controls, allowing for straightforward navigation through its functionalities.

The thermostat supports a range of heating and cooling systems, making it highly adaptable to different home environments. It is compatible with traditional gas and electric systems as well as heat pumps, which makes it a versatile option for various HVAC setups. The 1F56N-911 is designed to work seamlessly with multi-stage heating and cooling systems, ensuring precise temperature regulation and comfort.

Energy efficiency is a pivotal feature of the White Rodgers 1F56N-911. It includes programmable capabilities, enabling users to set schedules for different times of the day. This allows for reduced energy consumption when the home is unoccupied or during the night. Users can program up to four distinct periods within a day, ensuring that the system operates effectively while minimizing energy bills.

Additionally, the 1F56N-911 incorporates advanced technologies such as adaptive recovery and smart temperature control. Adaptive recovery allows the thermostat to learn how long it takes to heat or cool the space, initiating the system earlier to achieve the desired temperature right when needed. This feature optimizes energy use while ensuring comfort.

Another significant characteristic of this thermostat is its flexibility in installation. The device is designed for easy installation, often compatible with standard wall plates and wiring configurations, which minimizes installation time for DIY enthusiasts and professionals alike.

In conclusion, the White Rodgers 1F56N-911 thermostat combines modern technology with user-centric design. Its programmable features, adaptability across different systems, energy-saving characteristics, and ease of installation make it an excellent choice for anyone looking to improve their home's comfort and efficiency. With its reliable performance, the 1F56N-911 serves as an essential tool for effective climate control.