Installation, Wiring Connections | White Rodgers 1F85-0422 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 snugly, 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 fire re- sistant material (such as fiberglass 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.

Thermostat can be powered by system AC power or Battery.

If is 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, the will 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)

WIRING CONNECTIONS

Refer to equipment manufacturers’ instructions for specific system wiring information. After wiring, see CONFIGURATION section for proper thermostat configuration.

Refer to 37-6895for 1F83-0422/1F85-0422 wiring diagram specifications.

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 (HP 1)
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

1F83-0422 Thermostat, 1F85-0422 specifications

The White Rodgers 1F85-0422 is a highly regarded thermostat known for its innovative features and user-friendly design, making it a popular choice among homeowners and HVAC professionals alike. This programmable thermostat is designed to enhance energy efficiency and comfort in residential settings, allowing users to maintain optimal temperature settings with ease.

One of the standout features of the 1F85-0422 is its programmable functionality, which allows users to set specific heating and cooling schedules for different times of the day and week. This capability helps in reducing energy consumption, as the thermostat can adjust the temperature when the home is unoccupied or during the night when lower temperatures are preferred. With four programmable periods per day, users can easily customize their comfort levels according to their daily routines.

The 1F85-0422 also incorporates advanced technology, including a large, easy-to-read display that clearly shows the current temperature and settings. The backlit LCD screen ensures visibility even in dim lighting, providing convenience for nighttime adjustments. This thermostat features intuitive controls that allow users to navigate through the settings quickly, promoting a straightforward user experience.

Another key characteristic of the White Rodgers 1F85-0422 is its compatibility with various heating and cooling systems. It is designed to work efficiently with gas, electric, and heat pump systems, making it a versatile choice for a wide range of home HVAC configurations. The thermostat also supports multi-stage heating and cooling, ensuring precise temperature control and comfort throughout the home.

Energy-saving features are at the forefront of the 1F85-0422’s design. The thermostat is equipped with an energy-saving mode that optimizes heating and cooling cycles based on the user's preferences and occupancy patterns. Additionally, it provides alerts for regular maintenance, such as filter changes, to ensure that the HVAC system operates at peak efficiency.

In summary, the White Rodgers 1F85-0422 is a programmable thermostat that excels in performance, versatility, and user convenience. Its advanced features, including easy programming, compatibility with various HVAC systems, and energy-saving technologies, make it a reliable choice for enhancing home comfort while minimizing energy costs. Whether you are looking to upgrade your current thermostat or improve your home's energy efficiency, the 1F85-0422 is an excellent option to consider.