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Manual Emerson 1F85CA-0471 Thermostat

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Manual

INSTALLATION

Thermostat installation and all components of the

control system shall conform to Class II circuits per

the NEC code.

WARNING

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.

Thermostat can be powered by system AC power or Battery.

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.

“AA” Alkaline Batteries

Figure 1 – Battery door shown open

Mounting

Hole

Mounting

Hole

Place Level

across

Mounting Tabs

(for appearance only)

Place Level

across

Mounting Tabs

(for appearance only)

Figure 2 – Thermostat base and rear view of thermostat

WIRING CONNECTIONS

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 Description

L .............. Heat pump malfunction indicator for systems

with malfunction connection or Comfort Alert signal

O .............. Changeover valve for heat pump energized

constantly in cooling

B .............. Changeover valve for heat pump energized

constantly in heating

Y .............. Compressor Relay

Y2 ............. 2nd Stage Compressor

Terminal

Designation Description

W/E ............Heat Relay/Emergency Heat Relay (Stage 1)

W2 .............2nd Stage Heat (3rd Stage Heat in HP 2)

G ..............Fan Relay

RH .............Power for Heating

RC .............Power for Cooling

C ..............Common wire from secondary side of cooling system

transformer or heat only system transformer

6...............3 Wire Zone Valve – Energized when no call for Heat

TERMINAL DESIGNATION DESCRIPTIONS

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Specifications

Brand	Emerson
Model	1F85CA-0471
Category	Thermostats
File type	PDF
File size	1.31 MB

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Frequently Asked Questions about Emerson 1F85CA-0471 Thermostat

Our support team searches for useful product information and answers to frequently asked questions. If you find an inaccuracy in our frequently asked questions, please let us know by using our contact form.

What is the dead zone of a thermostat? Verified

Many modern thermostats have a dead zone. If the temperature deviates less than 4°C from the set temperature, the system will not heat or cool. This so called dead zone of the thermostat prevents the system from turning on and off too often, saving energy.

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What is the best place to mount a thermostat? Verified

The best place for a thermostat is approximately 1,5 meter above the ground. Never place the thermostat nead a radiator or other heat emitting equipment or in direct sunlight. Choose a room that is used often. In most cases this is the living room.

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