Installation, Wiring Connections | White Rodgers 1F85-0477 specification

INSTALLATION

!WARNING

Thermostat installation and all components of the control system shall conform to Class II circuits per the NEC code.

Figure 1 – Battery door shown open

“AA” Alkaline Batteries

Remove Old Thermostat

A standard heat/cool thermostat consists of three basic parts:

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

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

3.The switching subbase, which is removed by unscrewing the mounting screws that hold it on the wall or adapter plate. Before removing wires from old thermostat, label each wire with the terminal designation from which it was attached. Disconnect the wires from the old thermostat one at a time. Do not let wires fall back into the wall.

Installing New Thermostat

1.Pull the thermostat body off the thermostat base. Forcing or prying on the thermostat will cause damage to the unit.

2.Place base over hole in wall and mark mounting hole locations on wall using base as a template.

3.Move base out of the way. Drill mounting holes. If you are using existing mounting holes and the holes drilled are too large and do not allow you to tighten base snug- ly, use plastic screw anchors to secure the base.

4.Fasten base snugly to wall using mounting holes shown in Figure 2 and two mounting screws. Leveling is for appearance only and will not affect thermostat operation.

5.Connect wires to terminal block on base.

6.Push excess wire into wall and plug hole with a ﬁ re re- sistant material (such as ﬁ berglass insulation) to prevent drafts from affecting thermostat operation.

7.Carefully line the thermostat up with the base and snap into place.

Batteries

2 “AA” alkaline batteries are included with the thermostat. To install the batteries, pull the battery door as shown by the arrow and lift open. Using the polarity indicated inside the bat- tery door, insert the batteries. To close the battery door, swing the door down while pulling in the direction of arrow. Once fully down, snap the door back into position. To replace the batteries, set system to OFF.

WIRING CONNECTIONS

Thermostat can be powered by system AC power or Battery.

Ifis displayed, the thermostat is battery powered. If is not displayed, thermostat is system powered with optional battery back-up. When battery power remaining is approxi-

mately half, thewill be displayed. When “Change” is displayed, install fresh “AA” alkaline batteries immediately.

For best results, replace all batteries with new premium brand alkaline batteries such as Duracell® or Energizer®. We recom- mend replacing batteries every 2 years. If the home is going to be unoccupied for an extended period (over 3 months) and is displayed, the batteries should be replaced before leaving. When less than two months of battery life remain, the setpoint temperature will offset by 10 degrees (10 degrees cooler in Heat mode / 10 degrees warmer in Cool mode). If offset occurs, the normal setpoint can be manually reset with or . Another offset will occur within two days if batter- ies are not replaced.

Figure 2 – Thermostat base and rear view of thermostat

Mounting	Mounting
Hole	Hole
Place Level	Place Level
across	across
Mounting Tabs	Mounting Tabs
(for appearance only)	(for appearance only)

Refer to equipment manufacturers’ instructions for speciﬁ c system wiring information. After wiring, see CONFIGURATION section for proper thermostat conﬁ guration. Refer to ﬁ gure 3 through 6 for wiring diagram speciﬁ cations.

TERMINAL DESIGNATION DESCRIPTIONS

Terminal		Terminal
Designation	Description	Designation	Description

L	Heat pump malfunction indicator for systems	W/E	Heat Relay/Emergency Heat Relay (Stage 1)
	with malfunction connection	W2	2nd Stage Heat (3rd Stage Heat in HP 2)
O	Changeover valve for heat pump energized	G	Fan Relay
	constantly in cooling	RH	Power for Heating
B	Changeover valve for heat pump energized	RC	Power for Cooling
	constantly in heating	C	Common wire from secondary side of cooling system
Y	Compressor Relay		transformer or heat only system transformer
Y2	2nd Stage Compressor	6	3 Wire Zone Valve – Energized when no call for Heat

1F85-0477 specifications

The White Rodgers 1F85-0477 is a popular thermostat designed to offer homeowners an efficient and user-friendly control over their heating and cooling systems. As part of the White Rodgers brand, which has been synonymous with reliable HVAC controls for decades, the 1F85-0477 stands out with a variety of features and technologies that enhance user experience.

One of the main features of the 1F85-0477 is its digital display, which provides clear and easy-to-read temperature settings. The intuitive interface allows users to adjust the temperature with just a few button presses, making it accessible for people of all ages. The large, backlit screen also ensures visibility even in low-light conditions, adding to its usability.

The 1F85-0477 supports both heating and cooling functions, making it versatile for year-round temperature control. This model is compatible with a range of HVAC systems, including gas, oil, and electric systems, as well as heat pumps. This broad compatibility ensures that homeowners can seamlessly integrate the thermostat into their existing setups without the need for extensive modifications.

Another significant feature is the programmable functionality, which allows users to set different temperature schedules for weekdays and weekends. This feature helps optimize energy use by ensuring that the heating or cooling system operates only when needed, thus contributing to lower energy bills. The thermostat can be programmed for up to seven days, offering flexibility and comfort tailored to individual lifestyles.

In terms of technology, the White Rodgers 1F85-0477 employs a precise temperature sensing mechanism that ensures accurate readings. This technology minimizes temperature fluctuations, which increases overall comfort levels within the home. Additionally, the model includes a built-in memory that retains settings even in the event of a power outage, ensuring that users don't have to reprogram their preferences.

The thermostat also boasts a sleek, modern design that fits well with contemporary home décor. Its user-friendly installation process allows homeowners to set it up quickly and easily, with minimal tools required.

Overall, the White Rodgers 1F85-0477 combines convenience, efficiency, and modern design into a reliable thermostat solution. With advanced features and robust technologies, it is an ideal choice for homeowners looking to enhance their HVAC control while enjoying optimal comfort and energy savings.

White Rodgers 1F85-0477 Installation, Wiring Connections, Remove Old Thermostat, Batteries

Models: 1F85-0477