Mounting and Wiring

!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 circuits per the NEC code.

Electric/Gas Switch (Fan Option)

This thermostat is configured from the factory to operate a heat/ cool, fossil fuel (gas, oil, etc.), forced air system. It is configured correctly for any system that DOES NOT require the thermostat to energize the fan on a call for heat. If you system is an electric heat or heat-pump system that REQUIRES the thermostat to turn on the fan on a call for heat, locate the ELEC/GAS switch on the back of the thermostat (see fig. 1) and switch it to the ELEC position. This will allow the thermostat to energize the fan immediately on a call for heat. If you are unsure if the heating/ cooling system requires the thermostat to control the fan, contact a qualified heating and air conditioning service person.

When the thermostat is configured for Heat Pump, the thermo- stat will always power the circulator fan on a call for heat in the HEAT mode. The ELEC/GAS switch must be set to match the type of Auxiliary heat your system uses for proper operation in the EMERgency mode.

All wiring diagrams are for typical systems only. Refer to equipment manufacturers’ instructions for specific system wir- ing information.

!CAUTION

Take care when securing and routing wires so they do not short to adjacent terminals or rear of thermostat. Personal injury and/or property damage may occur.

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.Connect wires beneath terminal screws on base using appropriate wiring schematic (see figs. 2 through 4).

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

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

5.Fasten base loosely to wall, as shown in fig. 1, 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.Push excess wire into wall and plug hole with a fire- resistant material (such as fiberglass insulation) to prevent drafts from affecting thermostat operation.

Battery Location

2 “AA” alkaline batteries are included in the thermostat at the factory with a battery tag to prevent power drainage. You must remove the battery tag to engage the batteries.

If “BATT” is displayed, the batteries are low and should be replaced. For best results, replace all batteries with new premium brand alkaline batteries such as Duracell® or Energizer®. To replace batteries, press system button to OFF, install the batteries along the top of the base (see Fig. 1). The batteries must be installed with the positive (+) end to the left.

Reversing Valve

Energized in Cool

Mode

E/W1

THERMOSTAT

C *

SYSTEM

Reversing Valve

2nd Stage

Fan

Emergency

MONITOR

Energized in Heat,

Compressor

Aux

SWITCH

Relay

Heat

Off, Emergency

Heat

Contactor

Relay

Mode

Relay

24 VAC

Hot

120 VAC

Neutral

TRANSFORMER

(Class II Current Limited)

Figure 2. Typical wiring diagram for single transformer heat pump systems

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” alkaline batteries.

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					24 VAC

NEUTRAL

O	B	Y2		Y1


Reversing	Reversing	2nd Stage
Reversing	Valve	2nd Stage
Valve	Valve	Compressor
Valve	Energized in	Compressor
Energized in	Heat, Off,
Cool Mode	Heat, Off,		Compressor
Cool Mode	Emergency		Compressor
	Emergency			Contactor
	Mode			Contactor

Fan

Relay

	E/W1
W2	C *	L
		SYSTEM
	Emergency	MONITOR
	Emergency	SWITCH
Aux	Heat
Aux	Relay
Heat
Relay
	TWO COMMONS MUST
	BE JUMPERED TOGETHER!

THERMOSTAT

SYSTEM

Limit or

Safety

Switches

24 VAC				Hot
24 VAC				120 VAC
				Neutral
				Neutral

TRANSFORMER

(Class II Current Limited)

Figure 3. Typical wiring diagram for two transformer heat pump systems with NO safety circuits

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” alkaline batteries.

1F83-277 specifications

The Emerson 1F83-277 is a sophisticated programmable thermostat designed to bring efficiency and comfort to residential heating and cooling systems. This device stands out with its user-friendly interface and advanced features, making it an ideal choice for homeowners looking to modernize their HVAC control.

One of the main features of the 1F83-277 is its intuitive touchscreen display. The vibrant, easy-to-read screen allows users to effortlessly navigate through menus and settings. This interface is critical for accessing various functionalities, including temperature settings, scheduling programs, and energy-saving modes.

The thermostat is equipped with a five-day programming capability, enabling users to establish distinct heating and cooling schedules for weekdays and weekends. This level of customization allows for optimal energy management, as homeowners can set the temperature to match their daily routines. By adjusting the temperature according to specific usage patterns, users can significantly reduce energy consumption and lower utility bills.

Another notable feature is the inclusion of Smart Response Technology, which learns the heating and cooling needs of the home and adjusts the operation of the HVAC system accordingly. This intelligent adaptation ensures that the desired temperature is reached at the right time, enhancing overall comfort while maximizing energy efficiency.

The Emerson 1F83-277 supports multiple heating and cooling stages, accommodating various HVAC systems, including conventional, heat pump, and multi-stage configurations. This versatility makes it suitable for a wide range of residential settings, ensuring compatibility with most existing systems.

Additionally, the thermostat features a user-friendly setup process, allowing for quick installation and easy connectivity. It is compatible with various systems, including conventional, heat pumps, and gas or electric heating, which means it can fit seamlessly into any home environment.

Another key characteristic is its energy-saving features, such as an Eco mode that helps to minimize energy usage when the home is unoccupied. This is further augmented by the ability to track energy usage, enabling users to monitor their consumption patterns and make informed adjustments.

Overall, the Emerson 1F83-277 blends advanced technology with user-centric design, providing an efficient and comfortable heating and cooling solution for today's discerning homeowners.