Emerson 1F95EZ-0671 User Manual

Save these instructions for future use!

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

APPLICATIONS

Blue Easy Reader Thermostat

Single Stage, Multi-Stage, Heat Pump

Installation and Operating Instructions for Model:

Model Programming Choices

1F95EZ-0671

Non-Programmable 7 Day

THERMOSTAT APPLICATION GUIDE

1F95EZ-0671 Thermostat

Thermostat

Confi guration Options

Single Stage 1

No Heat Pump (SS1)

Multi Stage 2

No Heat Pump (MS2)

Heat Pump 1

Single Stage Compressor

Heat Pump (HP1)

Heat Pump 2

Two Stage or Two

Compressor Heat Pump

(HP2)

Thermostat

Applications

Gas, Oil, Electric, Heat Only,

Cool Only or Heat/Cool

Systems, 2 or 3 wire Hydronic

Zone (Hot Water or Steam)
Systems, 24 Volt or Millivolt

Single Stage Compressor
Heat Pump Systems - up to 2
Stages Aux./Emergency Heat

Two Stage or Two Compressor

Heat Pump systems - up to 2
Stages Aux./Emergency Heat

Maximum

Stages

Heat/Cool

1/1

2/2

3/1

4/2

SPECIFICATIONS

Electrical Rating:

Battery Power. . . . . . . . . . . . . . . . . . . . . . . . . . mV to 30 VAC, NEC Class II, 50/60 Hz or DC

Input-Hardwire . . . . . . . . . . . . . . . . . . . . . . . . . 20 to 30 VAC

Terminal Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A per terminal, 2.5A maximum all terminals combined

Setpoint Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 to 99°F (7 to 32°C)

Differential (Single Stage) . . . . . . . . . . . . . . . . . . . . Heat 0.6°F; Cool 1.2°F

Differential (Multi-Stage) . . . . . . . . . . . . . . . . . . . . . Heat 0.6°F; Cool 1.2°F

Differential (Heat Pump) . . . . . . . . . . . . . . . . . . . . . Heat 1.2°F; Cool 1.2°F

Operating Ambient. . . . . . . . . . . . . . . . . . . . . . . . . . 32°F 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. . . . . . . . . . . . . . . . . . . . . . 4.2"H x 6.4"W x 1.7"D

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.

Index Page

Installation 2
Wiring Connections 2
Wiring Diagrams 3
Thermostat Quick Reference 4
Installer Confi guration Menu 5
Operating Your Thermostat 7
Troubleshooting 8

www.white-rodgers.com

ATTENTION: MERCURY NOTICE

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

Mercury and products containing mercury must not be
discarded in household trash. Do not touch any spilled
mercury. Wearing non-absorbent gloves, clean up any
spilled mercury and place in a sealed container. For
proper disposal of a product containing mercury or a
sealed container of spilled mercury, place it in a suitable
shipping container. Refer to www.white-rodgers.com for
location to send product containing mercury.

PART NO. 37-6986A

0846

INSTALLATION

WARNING

!

Thermostat installation and all components of the
control system shall conform to Class II circuits per
the NEC code.

Remove Old Thermostat

Before removing wires from old thermostat, mark wires for
terminal identifi cation so the proper connections will be made
to the new thermostat.

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 1 and two mounting screws. Leveling is for
appearance only and will not affect thermostat operation.

5. Connect wires to terminal block on base using appropriate
wiring schematic.

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.

Thermostat Power Method Switch Position/Description

Battery Powered, no 24 Volt

system power available.

Hardwired with Battery
Back-up, for 24 Volt systems

with common connection from
transformer to "C" terminal on
thermostat.

*Battery Powered with Power
Stealing Assist, for 24 Volt

systems with no common
connection from transformer to
"C" terminal on thermostat.

Switches "On", thermostat runs
on batteries.

Switches "On", thermostat
runs on power directly from
transformer with battery back­up.

Switches "On", thermostat runs
on batteries and supplemental
power drawn through the heat
or cool circuit.

*Power Stealing Assist is very reliable to increase battery life,
but on a small number of heating or cooling systems with high
impedance electronic modules you may observe one of the fol­lowing conditions:

1. The furnace draft inducer motor may run with no call for heat.

2. The furnace fan may turn on with no call for heat or may not
turn off.

3. The furnace may not turn off when the call for heat ends.

4. The air conditioner may not turn off when the call for cool ends.

If the Power Stealing Assist method is not compatible with your
system, place the Power Stealing Switches to "Off". This cancels
Power Stealing Assist, operates the thermostat on batteries and
corrects the condition.

Figure 1 – Thermostat Base Multi-Stage 1F95EZ-0671

7. Carefully line the thermostat up with the base and snap
into place.

Battery Location

2 "AA" alkaline batteries are included in the thermostat at the
factory with a battery tag to prevent power drainage. Remove
the battery tag to engage the batteries.
To replace batteries, set system to OFF, remove thermostat
from wall and install the batteries in the rear along the top of
the thermostat (see Figure 1). For best results, use a premi­um brand "AA" alkaline battery such as Duracell

®

gizer

. If the home is going to be unoccupied for an extended

period (over 3 months) and

is displayed, the batteries

®

or Ener-

should be replaced before leaving.

Power Stealing Switch

The Power Stealing Switches (Fig. 1) should be left in the
"On" position for most systems. The information in the fol­lowing table details the thermostat power method and switch
options.

Mounting

Hole

Place Level
across Mounting Tabs
(for appearance only)

Rear view of thermostat

*

* A1 For Damper Control Not Applicable To This Model.

Place Level
across Mounting Tabs
(for appearance only)

Mounting

Hole

2 "AA" Batteries

Power Stealing
Switches

WIRING CONNECTIONS

Refer to equipment manufacturers' instructions for specifi c
system wiring information. After wiring, see CONFIGURA­TION section for proper thermostat confi guration.

TERMINAL DESIGNATION DESCRIPTIONS

Terminal Designation Description

O/B ...............................Changeover valve for heat pump energized constantly in cooling and off/heating

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

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

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

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

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

C ...............................Common wire from secondary side of cooling (Optional). Required for fault indication, continuous back-

light operation or remote temperature sensor operation 6 Powered closed 3rd wire for 3-wire zone valve

W/E ................................Heat Relay/Auxiliary Heat Relay (Stage 1) (3rd Stage Heat in HP2)

W2 ............................... 2nd Stage Heat (4th Stage Heat in HP2)

L ...............................Compressor diagnostic indicator for systems with diagnostic connection typically found on Heat pump

systems or with Copeland's Comfort Alert

2

Wiring diagrams shown are for typical systems and describe
the thermostat terminal functions.

WIRING DIAGRAMS

Figure 2 – Single Stage or Multi-Stage System (No Heat Pump)

with Single Transformer

L

System

Single
Stage 1

(SS1)

Multi­Stage 2

(MS2)

Comfort Alert II Module

or Similar System

Diagnostic Module

See Module Instructions

for details

Diagnostic
Indicator
Input
or
System
Malfunction
Switch
Input

O/B

O

Energized Constantly

in

Cool Mode

B

Energized Constantly

in Heat, Off,
Emergency

Mode

Y

Cool Mode
1st Stage

Y2

No
Output

Cool
Mode
2nd
Stage

W/E

Heat
Mode
1st Stage

W2

No Output

Heat Mode
2nd Stage

G

Blower/
Circulator
Fan Energized
on Call for
Cool (and
Heat if
configured
for Electric
Heat)

* Common connection required for diagnostic or malfunction indication.

Figure 3 – Single Stage or Multi-Stage System (No Heat Pump)

with Two Transformers

O/B

O

Energized Constantly

in

Cool Mode

B

Energized Constantly

in Heat, Off,

Emergency

Mode

Y

Cool Mode
1st Stage

120VAC

HEATING

System

Single
Stage 1

(SS1)

Multi­Stage 2

(MS2)

CLASS II

TRANSFORMER

NEUTRAL

24VAC

HOT

L

Diagnostic
Indicator
(Optional)

* Common connection required for diagnostic or malfunction indication.

Y2

No
Output

Cool
Mode
2nd
Stage

W/E

Heat
Mode
1st Stage

W2

No Output

Heat Mode
2nd Stage

Jumper

RH

24 Volt

24 Volt

(Hot)

(Hot)

Heat

Cool

G

Blower/
Circulator
Fan Energized
on Call for
Cool (and
Heat if
configured
for Electric
Heat)

Single Stage, Multi-Stage and Heat
Pump Connections

Refer to equipment manufacturers' instructions

C 6

RC

Optional*

24 Volt
(Com-

mon)

NEUTRAL

24VAC

HOT

CLASS II

TRANSFORMER

Remove Jumper Wire

Jumper

between RH & RC

RH

RC

C

Optional*

24 Volt

24 Volt
(Hot)
Cool

24 Volt
(Com-

mon)

NEUTRAL

24VAC

HOT

(Hot)
Heat

for specifi c system wiring information.

This thermostat is designed to operate a
single-transformer or two-transformer system.

You can confi gure the thermostat for use with
the following systems:

SINGLE STAGE (SS 1) gas, oil or electric.

MULTI-STAGE (MS 2) gas, oil or electric.

HEAT PUMP TYPE 1 (HP 1). Single stage

120VAC

compressor system; gas or electric backup.

HEAT PUMP TYPE 2 (HP 2). Multi-stage

compressor or two compressor system with
gas or electric backup.

After wiring, see INSTALLER CONFIGURA­TION section for proper thermostat confi gura-
tion.

120VAC

COOLING

CLASS II

TRANSFORMER

Figure 4 – Heat Pump Systems

+

Y2

Heat Mode - 2nd
Stage, Emergency
Mode - 1st Stage

+

Note: Dual Fuel option

de-energizes Heat mode

stage 1 (compressor)

when auxiliary heat

Heat Mode - 3rd
Stage, Emergency
Mode - 1st Stage

+

Note: Dual Fuel option

de-energizes Heat mode

stage 1 (compressor)

when auxiliary heat

W/E

is energized

is energized

Y

O/B

System

Heat Pump 1

(HP1)

Diagnostic
Indicator
or System
Malfunction

Heat Pump 2

Switch

(HP2)

Comfort Alert II Module

or Similar System

Diagnostic Module

See Module Instructions

for details

* Common connection required for diagnostic or malfunction indication.

+

Dual Fuel option, if selected turns off compressor(s) when Auxiliary stages energize.

O

Energized in

Cool Mode

B

Energized in

Heat, Off,

Emergency

Mode

Heat and
Cool Mode
1st Stage
(Compressor)

No
Output

2nd
Stage
(Com­pressor)

+

W2

Heat Mode - 3rd
Stage, Emergency
Mode - 2nd Stage

+

Note: Dual Fuel option

de-energizes Heat mode

stage 1 (compressor)

when auxiliary heat

is energized

Heat Mode-4th
Stage. Emergency
Mode - 2nd Stage

+

Note: Dual Fuel option

de-energizes Heat mode

stage 1 (compressor)

when auxiliary heat

is energized

Blower/
Circulator Fan
Energized on
Call for Heat
or Cool.
Set Elect/Gas
Option for
Emergency
mode

Jumper

RH

G

24 Volt

24 Volt

(Hot)

(Hot)

Heat

Cool

Figure 5 – 3-Wire (SPDT) Heat Only Zone Valve Wiring

Jumper

W

Y

Opens
Valv e
(4)

G

Blower/Circulator
Fan Energized

24 Volt
(Hot)
Heat
(5)

RC

24 Volt
(Hot)
Cool

C

Constant

24 Volt
(Com-

mon)

NEUTRAL

RH

System

Single Stage
3-wire
Zone Valve
application

Closes
Valv e
(6)

6

RC

24VAC

HOT

CL6

Optional*

24 Volt
(Com-

mon)

NEUTRAL

24VAC

CLASS II

TRANSFORMER

HOT

120VAC

CLASS II

120VAC

3