Emerson 1f85u-22pr Universal Thermostat Installation Guide

EMERSON 1F85U-22PR Universal Thermostat

Optional Accessory: Wall Cover-Up Plate F61-2663, 6 3/4” W x 4 1/2” H

SPECIFICATIONS

THERMOSTAT INSTALLATION

WIRING

Refer to equipment manufacturer’s instructions for specific system wiring information. After wiring, see INSTALLER MENU for proper thermostat configuration. Wiring table shown are for typical systems and describe the thermostat terminal functions. Wiring will change when dedicated emergency heat is on (See Installer Menu #15).

Precautions

• Do not exceed the specification ratings.
• All wiring must conform to local and national electrical codes and ordinances.
• This control is a precision instrument, and should be handled carefully. Rough handling or distorting components could cause the control to malfunction.

Do not use on circuits exceeding specified voltage. Higher voltage will damage control and could cause shock or fire hazard. Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring will burn out thermostat and could cause personal injury and/or property damage.

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

To prevent compressor and/or property damage, if the outdoor temperature is below 50°F, DO NOT operate the cooling system. Do not allow the compressor to run unless the compressor oil heaters have been operational for 6 hours and the system has not been operational for at least 5 minutes.

To prevent changes that may affect system performance, this thermostat has an INSTALLER MENU and a USER MENU. The INSTALLER MENU provides access to every option, while the USER MENU provides access to items that will not affect system performance. To access the INSTALLER MENU press the Menu button for 8 seconds. The display will show item 05 in the table below. Use Next and Back to navigate through menu items. Press ▲ or ▼ to change a menu setting.

Installer Menu # (Hold Me nu 8 Seconds)	Description	Default Setting (flashing icons)	Settings (Press  ▲ or  ▼)
	Outdoor Equipment: selects air conditioner (AC) or heat pump (HP ) equipment as well as the number of stage	AC2	AC0 AC1 AC2 HP1
	Indoor Equipment: selects whether the equipment is a gas furnace, electric furnace or fan only	EL2	FAN GA1 GA2 (conventional only) EL1 EL2 (conventional only)
	Dedicated Emergency: W/E only operates in Emergency Aux mode. W2 becomes 1st stage Aux. Heat	OFF	On OFF
	O,B or 3 Wire Zone Valve Selection	0	O B 3
	Fan Circulation Mode: Turns blower on for present time period when equipment has not cycled (on) for 1 hour	OFF	10 minutes to 100 minutes in 5 minute increments
	Heat Cycle Rate: how often the heat will turn on	MEd	SLO – slow MEd – medium FAS – fast
	Aux Cycle Rate: how often the auxiliary heat will turn on	MEd	SLO – slow MEd – medium FAS – fast
	Cool Cycle Rate: how often the coo ling will turn on	MEd	SLO – slow MEd – medium FAS – fast
	Compressor Lockout: protects the compressor from short cycling	OFF	On – 5 minute delay OFF – no delay
	Ma x Heat Limit : maximum set point for heat mode	99	47 to 99
	Minimum Cool Limit : minimum set point for cool mode	45	45 to 97
	Schedule Type: set as either 7-Day, 5-1-1 Day or Non-Programmable	5	7 – 7 Day 5 – 5-1-1 Day 0 – Non Programmable
	Defines periods per day	4	2 -leave, return 4 -wake, leave, return, sleep
	Early Start: starts heating or cooling early so your programmed temperature is reached by the programmed time	OFF	On – start early OFF – start at program period time
	Fahrenheit or Celsius	°F	°F – Fahrenheit °C – Celsius
	Temperature Display Adjustment: adjust the displayed “Room Temperature”	0	-5 to +5
	Continuous Display Light: keep the backlight always on – “C” wire required	OFF	On – always on OFF – momentarily
	Change Air Filter: set up a monthly reminder	OFF	1 to 12 – reminder time (months) OFF – no filter reminder
	Auto Changeover: thermostat automatically switches between heat and cool	OFF	On – enable auto OFF – disable auto
	Keypad Lock: prevent unwanted changes to the thermostat	OFF	On – disable buttons OFF – all buttons are active

TEST EQUIPMENT Turn on power to the system.

Fan Operation

If your system does not have a G terminal connection, skip to Heating System.

1. Press the fan button to select the On position. The blower should begin to operate.
2. Press the fan button to select the Auto position. The blower should stop immediately.

Heating System

1. Press the System button to select the Heat position. Heat Pumps only – if the auxiliary heating system has a standing pilot, be sure to light it.
2. Press ▲ to adjust thermostat setting to 1° above room temperature. The heating system should begin to operate and the thermostat will indicate Heat On.
3. For heat pump with auxiliary- Press ▲ to adjust thermostat setting to 3° above room temperature. The auxiliary heat should begin to operate and the thermostat will indicate Heat On Aux.
4. Press ▼ to adjust thermostat setting 1° below room temperature. The heating system should stop operating and the Heat On icon will disappear.

Auxiliary System ( only for heat pumps with auxiliary)

1. Press the System button to select the Aux position.
2. Press ▲ to adjust thermostat setting to 1° above room temperature. The auxiliary heating system should begin to operate and the thermostat will indicate Heat On Aux.
3. Press ▼ to adjust thermostat setting 1° below room temperature. The auxiliary heating system should stop operating and the Heat On Aux icon will disappear.

Cooling System

1. Press the System button to select the Cool position.
2. Press ▼ to adjust thermostat setting 1° below room temperature. The blower should come on immediately on high speed, followed by cold air circulation. The thermostat will indicate Cool On. There can be up to a 5 minute delay. (see INSTALLER MENU, item 50)
3. Press ▼ to adjust thermostat setting to 1° above room temperature. The cooling system should stop operating and the Cool On icon will disappear.
   Note: If Starting Soon is shown on the display, the compressor lockout feature is operating. There will be up to a 5 minute delay before the compressor turns on (see INSTALLER MENU, item 50).

USING THE THERMOSTAT

THERMOSTAT OVERVIEW

Before you begin using your thermostat, you should be familiar with its features, display and the location/operation of the thermostat buttons and switches.

Whenever”” appears in the display, new premium brand AA alkaline batteries should be installed. If the house will be unoccupied for an extended period and either “” or “  ” is displayed, install new batteries before leaving.

USER MENU

To customize thermostat settings, press and hold the Menu button for ½ second from the home screen. Use the ▲ or ▼ buttons to highlight Settings and press Next. Use Next and Back to navigate through menu items. Press ▲ or ▼ to change the setting.

User’s Menu # (Press Menu button and release)	Description	Default Setting (flashing icons)	Settings (Press ▲or▼)
	Schedule Type: set as either 7-Day, 5-1-1 Day or Non Programmable	5	7 – 7 Day 5 – 5-1-1 Day 0 – Non-Programmable
	Defines periods per day	4	2 – leave, return 4 – wake, leave, return, sleep
	Early Start: starts heating or cooling early so your programmed temperature is reached by the programmed time	OFF	On – start early OFF – start at program period time
	Fan Circulation Mode: Turns blower on for present time period when equipment has not cycled (on) for 1 hour	OFF	10 minutes to 100 minutes in 5 minute increments
	Continuous Display Light: keep the backlight always on – “C” wire required	OFF	On – always on OFF – momentarily
	Change Air Filter: set up a monthly reminder	OFF	1 to 12 – reminder time (months) OFF – no filter reminder
	Auto-Changeover: thermostat automatically switches between heat and cool	OFF	On – enable auto| OFF – disable auto

THERMOSTAT OPERATION

Set Current Time and Day
Note: Time icons will flash at initial power up or after a reset.

1. Press Menu
2. The time icon will be flashing. Press Next to advance and set the time
3. Use ▲ or ▼ to set the correct time
4. Press Next and use ▲ or ▼ to set the correct day
5. Press Exit when finished.

The default program is 5-1-1 Day, but can be setup as a 7-Day or Non-Programmable thermostat (refer to the User Menu above).

• Hold Temperature (bypassing the schedule) – With the System set to Heat or Cool, momentarily press the Hold/Run button. Hold will be displayed. Use ▲ or ▼ to adjust the temperature. The thermostat will hold the room temperature at the selected setting until you press Hold/Run again to start program operation (cancels permanent Hold).
• Program Override (Temporary Hold) – Press ▲ or ▼ until the desired temperature is displayed. The thermostat will override the schedule until the next programmed time period with a minimum override of 2 hours. Then the thermostat will automatically revert to the program.
• Keypad Lockout – To prevent unwanted changes, the buttons can be disabled.
  To turn this feature On, press and hold ▲ and the Menu button until the icon appears. To turn Off, press and hold ▲ and the Menu button for 3 seconds.

THERMOSTAT SCHEDULE / PROGRAMMING

Energy Saving Factory Schedule
This thermostat is programmed with the energy saving settings shown in the table below for all days of the week

Energy Saving Factory Schedule
This thermostat is programmed with the energy saving settings shown in the table below for all days of the week.

Note: Thermostat can be programmed on or off the subbase

Modify the Heating Schedule

1. Use the System button to select Heat
2. Press Menu
3. Use the ▼ button to select Schedule and press Next to enter the schedule
4. The time icons will flash – use ▲ or ▼ to set the time for the start of a period
5. Press Next – the set point icons will flash – use ▲ or ▼ to set the temperature for the current period
6. Continue to press Next to advance through all periods (P1 / Wake, P2 / Leave, P3 / Return, P4 / Sleep) for all days of the week.

Note: Press Back to return to the previous setting. Once all days of the week have been programmed the thermostat will display End. Press Exit at any time to save changes and return to home screen.

Modify the Cooling Schedule

1. Use the System button to select Cool
2. Repeat steps 2-6 from the heating schedule

TROUBLESHOOTING

Resetting the Thermostat or Thermostat Settings

If the thermostat has good batteries, but has a blank display or does not respond to key presses, the thermostat should be reset by removing the batteries for 2 minutes. This reset will not change the menu settings or program. If the condition persists after reinstalling the batteries, replace the thermostat.

To conveniently reset only the schedule and user settings back to factory defaults, press Menu and Backlight buttons at the same time and hold until the display goes blank and resets.

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References

• White-Rodgers Brand | Emerson US
• Emerson | Thermostat Helper
• Thermostat Recycling Corporation (TRC)