Emerson 1F86-0244 Instruction Manual

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FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.

Blue 2” Single Stage Thermostat

Installation and Operating Instructions

Model	Programming Choice
1F86-0244	Non-Programmable

APPLICATIONS

1F86-0244 Thermostat

For use with the following Class II systems:

•Single Stage systems

•Single-stage heat pump systems with no Aux heat

DO NOT USE WITH:

•Systems exceeding 30 VAC and 1.5 amps

•3-wire zoned hydronic heating systems

SPECIFICATIONS

Electrical Rating:
Battery Power..................................................	mV to 30 VAC, 50/60 Hz or DC
Input-Hardwire................................................	20 to 30 VAC
Terminal Load.........................................................	1.0 A per terminal, 1.5A maximum all terminals combined
Setpoint Range......................................................	45° to 90°F (7° to 32°C)
Differential (Single Stage)......................................	Heat 0.6°F; Cool 1.2°F (adjustable)
Differential (Heat Pump).........................................	Heat 1.2°F; Cool 1.2°F (adjustable)
Operating Ambient.................................................	32° to +105°F (0° to +41°C)
Operating Humidity................................................	90% non-condensing max.
Shipping Temperature Range.................................	-40° to +150°F (-40° to +65°C)
Dimensions Thermostat.........................................	3-3/4” H x 4-3/4” W x 1-1/2” D

PRECAUTIONS

This thermostat is intended for use with a low voltage NEC Class II system. Do not use this thermostat with a line voltage system. If in doubt about whether your wiring is millivolt, line, or low voltage, have it inspected by a qualified heating and air conditioning contractor or electrician.

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.

! 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.

!WARNING

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 damage thermostat and could cause personal injury and/or property damage.

Thermostat installation and all components of the system shall conform to Class II (current limited) circuits per the NEC code. Failure to do so could cause a fire hazard.

	PART NO. 37-7010C
www.white-rodgers.com	Replaces 37-7010B
	1004

INSTALLATION

REMOVE OLD THERMOSTAT

1.Shut off electricity at the main fuse box until installation is complete. Ensure that electrical power is disconnected.

2.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.

3.Identify each wire attached to the old thermostat using the labels enclosed with the new thermostat.

4.Disconnect the wires from old thermostat one at a time. DO

NOT LET WIRES FALL BACK INTO THE WALL.

5.Install new thermostat using the following procedures.

ATTENTION!

This product does not contain mercury. However, this product may replace a unit which contains mercury.

Do not open mercury cells. If a cell becomes damaged, do not touch any spilled mercury. Wearing nonabsorbent gloves, take up the spilled mercury and place into a container which can be sealed. If a cell becomes damaged, the unit should be discarded.

Mercury must not be discarded in household trash. When the unit this product is replacing is to be discarded, place in a suitable container.Refer to www.white-rodgers.com for location to send the product containing mercury.

ATTACH THERMOSTAT BASE TO WALL

1.Remove the packing material from the thermostat. Gently pull the cover straight off the 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 (see Fig.1).

3.Move base out of the way. Drill mounting holes.

4.Push wires through opening in thermostat base.

5.Fasten base loosely to wall using two mounting screws. Place a level against bottom of base, adjust until level, and then tighten screws. (Leveling is for appearance only and will not affect thermostat operation.) If you are using existing mounting holes, or if holes drilled are too large and do not allow you to tighten base snugly, use plastic screw anchors to secure subbase.

6.Connect wires to terminals on base using appropriate wiring schematic (see figs. 2 through 4).

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

O/B TERMINAL SWITCH SELECTION

The O/B switch on this thermostat is factory set to the “O” position. This will accommodate the majority of heat pump applications, which require the changeover relay to be energized in COOL. If the thermostat you are replacing or the heat pump being installed with this thermostat requires a “B” terminal, to energize the changeover relay in HEAT, the O/B switch must be moved to the “B” position.

Battery

Door

Mounting

Hole

Mounting

Hole

O/B

Switch

Gas/Elec	Opening
Switch	for wires

Figure 1. Thermostat Base

GAS / ELEC SWITCH

If your system is a heat pump, the GAS/ELEC Switch must be set to ELEC (see Fig. 1) If your system is a single stage, the switch must be set to GAS.The switch setting must agree with the system configuration selected in the configuration menu.

BATTERY LOCATION

“AA” Alkaline Batteries

Two “AA” alkaline batteries are installed in your thermostat with a battery tag to prevent power drainage. Prior to use, open the battery door and remove the battery tag. To open, pull the battery door as shown by the arrow and lift open. The two

“AA” batteries will operate all functions or maintain time and continuously display the temperature during a loss of AC power. To replace batteries, pull the battery door shown by the arrow and lift open. Using the polarity indicated inside the battery 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.

Thermostat can be powered by system AC power or Battery. If is displayed, the thermostat is battery powered.Ifis not displayed, thermostat is system powered with optional battery back-up. When battery power remaining is approximately half, the will be displayed. When “Change ” is displayed, installfresh“AA”alkalinebatteriesimmediately.Forbestresults, use new premium brand alkaline batteries such as Duracell® or

Energizer®. We recommend 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 batteries are not replaced. To replace the batteries, set system to OFF.

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WIRING DIAGRAMS

Optional Jumper for

Single Stage Heat Pump

O/B	Y	G	W	C
Changeover		Fan
Relay*	Compressor			Optional
		Relay
			Heat Relay
	Contactor

*Changeover Relay is energized in COOL when O/B switch is in the “O” position Changeover Relay is energized in HEAT when O/B switch is in the “B” position

THERMOSTAT

R

SYSTEM

24 VAC		Hot
		120 VAC

Neutral

TRANSFORMER

(Class II Current Limited)

Figure 2. Typical wiring diagram for single transformer single stage systems

NOTE

If safety circuits are in only one of the systems, remove the transformer of the system with NO safety circuits.

CUT AND

TAPE OFF!

HOT

					24 VAC
120 VAC

NEUTRAL

Optional Jumper for

Single Stage Heat Pump

O/B	Y	G	W	C
Changeover		Fan
Relay*		Relay		Optional
	Compressor		Heat Relay
	Contactor

TWO COMMONS MUST

* Changeover Relay is energized in COOL when O/B switch is in the “O” position BE JUMPERED TOGETHER! Changeover Relay is energized in HEAT when O/B switch is in the “B” position

THERMOSTAT

R

SYSTEM

Limit or

Safety

Switches

Hot

24 VAC 120 VAC

Neutral

TRANSFORMER

(Class II Current Limited)

Figure 3. Typical wiring diagram for two transformer single stage systems with NO safety circuits

NOTE

Polarity must be observed. If the HOT side of the

second transformer is jumpered to the COMMON side

Optional Jumper for

of the first transformer a short will be made. Damage

to equipment will occur when power is restored.

Single Stage Heat Pump

THERMOSTAT

O/B

Y

G

W

C

R

SYSTEM

Limit or

Limit or

Safety

HOT

Safety

24 VAC

120 VAC

Switches

Changeover

Fan

Optional

Switches

NEUTRAL

Relay*

Relay

24 VAC

Auxiliary

ACCESSORY

Heating

NOTE

Compressor

Heat

RELAY N.O.

Transformer

The

accessory relay scheme

Contactor

Relay

CONTACT

(Class II

is required

when safety

Current Limited)

COMMON

circuits exist in both systems.

TWO COMMONS MUST

Limit or

Limit or

BE JUMPERED TOGETHER!

Safety

Safety

HOT

Switches

24 VAC

120 VAC

Switches

COMMON

* Changeover Relay is energized in COOL when O/B switch is in the “O” position

NEUTRAL

Heat Pump Transformer

Changeover Relay is energized in HEAT when O/B switch is in the “B” position

(Class II Current Limited)

Figure 4. Typical wiring diagram for two transformer single stage systems with safety circuits in BOTH systems

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THERMOSTAT QUICK REFERENCE

Before you begin using your thermostat, you should be familiar with its features and with the display and the location and operation of the thermostat buttons and switches (see fig. 5).

Your thermostat consists of two parts: the thermostat cover and the base. To remove the cover, pull it straight out from the base. To replace the cover, line up the cover with the base and press until the cover snaps onto the base.

9“Service” indicatesadiagnosticfaultintheheating/cooling system. It does not indicate a fault in the thermostat.

10“Change Filter” is displayed when the system has run for the programmed filter time period as a reminder to change or clean your air filter.

11“” indicates power level of batteries. “Change ” indicates batteries should be replaced.

The Thermostat Buttons and Switches

1Raises temperature setting.

2Lowers temperature setting.

3SYSTEM switch (COOL, OFF, HEAT).

4FAN switch (ON, AUTO).

The Display

5Indicates setpoint temperature. This is blank when system switch is in the OFF position. Setpoint temperature is displayed (flashing) if the thermostat is in lockout mode to prevent the compressor from cycling too quickly.

6“Save” indicates the Cool Savings feature is enabled in the configuration menu. “Save” (flashing) indicates Cool Savings feature is active.

7Flame icon () is displayed when the SYSTEM switch is in the HEAT position. Flame icon () is displayed flashing when thermostat is calling for heat. Snowflake icon () is displayed (non-flashing) when the SYSTEM switch is in the COOL position. Snowflake icon () and is displayed (flashing) if the thermostat is calling for cool.

8Displays current temperature.

Figure 5. Thermostat display, buttons, and switches

1

2

SYSTEM

3 4

5 11

6

10

9

8

7

INSTALLER/CONFIGURATION MENU

The configuration menu allows you to set certain thermostat operating characteristics to your system or personal requirements. To enter the menu: Set your thermostat to OFF and press the and buttons simultaneously. The display will show the first item in the configuration menu. Press and to change to the next menu item. To exit the menu, set the system switch to

Cool or Heat. If no keys are pressed within fifteen minutes, the thermostat will revert to normal operation.

Configuration Menu

Menu	Press	Displayed	Press	or	Comments
Reference	Key	(Factory	to select from
Number		Default)	listed options
1	and	SS		HP	Select Single Stage (SS) or
					Heat Pump (HP, 1 compressor)
2	and	CS		On	Select Cool Savings Feature On or OFF
		(OFF)
	and	CS	1, 2, 3, 4, 5, 6 If CS selected On, selects Cool Savings value
		(3)
3	and	CR Heat	FA, SL		Select Adjustable Anticipation, cycle rate,
		(ME)			Heat Single Stage
4	and	CR Cool		SL	Select Adjustable Anticipation, cycle rate,
		(FA)			Cool Single Stage
5	and	CL		On	Select Compressor lockout OFF or On
		(OFF)

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INSTALLER/CONFIGURATION MENU

Menu	Press	Displayed	Press	or	Comments
Reference	Key	(Factory	to select from
Number		Default)	listed options
6	and	L		OFF	Select Display Light On or OFF
		(On)
7	and	Temp	4 LO to		Select temperature display adjustment higher or
		(0 HI)		4 HI	lower
8	and	oF		oC	Select oF / oC Display (temperature units in Fahren-
					heit or Celsius)
9	and	Change Filter		On	Select filter replacement indicator OFF or On
		(OFF)
	and	Change Filter	25 to 1975		If Change Filter selected On, selects time interval for
		(200 h)			Change Filter Indicator. (in 25 hour increments)
10	and				Returns to normal operation

1)System Configuration - Selects SS (Single Stage) or HP (Heat Pump) operating mode. Default configuration is SS. For Heat Pump operation choose HP.

2)Select CS (Cool Savings™) - With Cool Savings™ enabled, the thermostat will make small adjustments to the Setpoint temperature during periods of high demand to reduce cooling system running time and save energy.

When the cooling system has been running for more than 20 minutes, humidity in the home will be lower and a higher setpoint temperature will feel comfortable. After 20 minutes of run time, the thermostat will start increasing the setpoint temperature in steps of less than one degree as the system continues to run. These adjustments will eventually cause the system to satisfy the thermostat and turn the system off to reduce the energy consumption.When the Cool Savings feature is active and making adjustments, the display will show “Save”.The amount of the adjustments to the setpoint temperature is dependent on the Cool Savings value that is set, 1 being the least adjustment and 6 being the most adjustment. With this feature set to OFF, no change will occur when the cooling system is continuously running during the periods of high demand.Periods of high demand will normally occur during the late afternoon and early evening on the hottest days of the summer.

3 & 4) Select Cycle Rate Selection - The factory default setting for Single Stage Heat is Medium Cycle (ME). For Single Stage Cool the default setting is fast (FA).To change cycle rate, press the and buttons.

The cycle rate differentials for different settings are:

MODE	Fast	Medium	Slow
	(FA)	(ME)	(SL)
SS Heat	0.6°F	0.8°F	1.2°F
SS Cool	1.2°F	-	1.7°F

5)Select Compressor Lockout CL OFF or ON - Selecting CL On will cause the thermostat to wait 5 minutes between cooling cycles. This is intended to help protect the compressor from short cycling. Some newer compressors already have a time delay built in and do not require this feature. Your compressor manufacturer can tell you if the lockout feature is already present in their system.When the thermostat compressor time delay occurs, it will flash the setpoint for up to five minutes.

6)Select Backlight Display - The display backlight improves display contrast in low lighting conditions. When the “C” terminal is connected, selecting backlight CdL On will keep the light on continuously. Select backlight OFF will turn the light on momentarily when any key is pressed. When the “C” terminal is not connected, regardless of the backlight selection, the light will be on momentarily when any key is pressed.

7)Select Temperature Display Adjustment 4 LO to 4 HI - Allows you to adjust the room temperature display up to 4° higher or lower. Your thermostat was accurately calibrated at the factory but you have the option to change the display temperature to match your previous thermostat. The current or adjusted room temperature will be displayed on the display.

8)Select F° or C° Readout - Changes the display readout to

Celsius or Fahrenheit as required.

9)Select Filter Replacement Reminder and Set Run Time

Select the “Change Filter” reminder On or OFF. If selected

On, press and to select the time period from 25 to 1975 hours in 25 hour increments. In a typical application, 200 hours (default) of run time is approximately 30 days.

After the selected time of blower operation, the thermostat will display “Change Filter” as a reminder to change or clean your air filter. When “Change Filter” is displayed, press the and button to clear the display and restart the time to the next filter change. A selection of OFF will cancel this feature.

5