Emerson 1F92 Heat Pump User Manual

Universal
Multi-Stage
Heat Pump
Digital 5/2 Day
Programmable
90 Series
TM
P R E M I U M
Oper
a ting Instr
uctions
Opera
Instructions
1F92
Retain for Future Use
Easy, Menu-Driven Set-Up
and Programming
1 2
3
4
5
6
7
8
9
10
11
12
Premium options
to customize the thermostat
to fit your application.
17
16
15
14 13
INTRODUCTION
Thank you for purchasing
your new Comfort-Set 90
Series thermostat. Your new
White-Rodgers thermostat
uses solid state microcomputer technology to
provide precise time/temperature control. This thermostat
offers the flexibility to design
heating and cooling programs
that fit your needs.
Adaptable to most 24 volt
residential forced air, multistage or heat pump systems
with electric or fossil fuel
auxiliary (1F92-371).
You will find information
about thermostat buttons and
display in the component
section beginning on page 2.
Installation instructions begin
on page 4.
Instructions for optional
thermostat configuration
begin on page 23. Programming information begins on
page 26. Descriptions of the
thermostat’s features begin on
page 30.
We have also added thumb
tabs to help you find sections
of the manual.
1
Introduction
Orientation
Installation
Configuration
Programming
Features
Index
ORIENTATION
THE THERMOSTAT BUTTONS
See inside front cover for illustration
showing button locations.
1 (Blue arrow) Lowers temperature
setting (45°F or 7°C minimum)
2 (Red arrow) Raises temperature
setting (99°F or 37°C maximum)
3 The multi-color indicator glows:
green for 1st stage, yellow for 2nd stage,
red for emergency heat and flashing red
for malfunction condition in system.
4 This button (on top of the cover)
lights the display.
5 Used to initiate or review thermostat
programming or advance to next
program period in programming mode.
6 Used with TIME FWD /TIME
BACK to set the clock.
7 Used to adjust the time backward, or
to select the previous menu item.
14 Used to set the filter change-out
time, or to reset the filter change timer.
8 Used to adjust the time forward, or
to select the next menu item.
15 Sets the system mode (HEATing,
EMERgency (Heat Pump models only),
OFF, COOLing, or AUTOmatic
changeover).
9 Used with TIME FWD /TIME
BACK to set the current day.
10 Used to advance operation to the
next program period or advance to the
next day in programming mode.
11 Used to manually override
programming to hold at a selected
temperature.
12 Used to enter and configure the
VACATION mode.
13 Selects fan operation (see The
Display 21 ). This button is also used to
program the fan to run continuously
during a program period.
2
16 Used to adjust the clock one hour
forward or back.
17 Used to start or return to program
operation.
THE DISPLAY
18 Displays system mode (HEA
HEA
T,
HEAT
EMER, OFF
O , HOLD
OFF, COOL
COOL, AUT
UTO
HOLD,
or VACA
VACA). During programming
MOR, DAY,
displays the time period (MOR,
EVE, NHT
NHT) being programmed.. In the
configuration menu, the menu item
name is shown, one word at a time
PRGM MODE
(PRGM
MODE, EMR
EMR, COOL FAN
DELA OFF
OFF, etc.).
18
19
21
20
CHECK BATTERY
21 Displays FAN ON when the fan is
operating continuously. Displays FAN
AUT
O when the fan cycles with the
UTO
heating or cooling system. Displays
AN ON when fan is proPR
GF
FAN
PRG
grammed to be on during a period.
20 Indicates the length of time
remaining in a temporary hold
condition. Also indicates the length of
time remaining in VACATION mode.
22 Displays the setpoint temperature.
21
18
CHECK BATTERY
STAT SYSTEM
HRS
19 CHECK STAT appears when the
thermostat detects certain problems
within itself. CHECK SYSTEM
appears when the thermostat detects
certain problems in heating or cooling
the system.
HRS
FAN AUTO
HEAT
°F
AM
MON TUE WED THU FRI SAT SUN
24
23
HEAT
°F
AM
MON TUE WED THU FRI SAT SUN
22
Figure 1. The Display
3
Orientation
PRG
FAN ON
25
23 Alternately displays room
temperature and time of day.
24 Shows the current day of the week.
When programming, shows the day(s)
being programmed.
25 The word HEA
T or COOL will
HEAT
appear above or below the setpoint if
area 18 is needed to display other
information.
INSTALLATION
SPECIFICATIONS
1F92-371:
5/2 Day programming;
residential applications
ELECTRICAL DATA
Electrical Rating:
20 to 30 VAC, 50/60 Hz with
common
Standard Systems:
Multi-stage gas, oil, electric.
Operating Ambient Temperature:
32° to 110°F (0° to 43°C)
Single-stage or two-stage compressor heat pump.
Operating Humidity Range:
90% non-condensing max.
THERMAL DATA
Shipping Temperature Range:
-4° to 149°F (-20° to 65°C)
Setpoint Temperature Range:
45° to 99°F (7° to 37°C)
0.05 to 1.5 Amps per terminal
2.5 Amps maximum total load (all
terminals combined)
4
PRECAUTIONS
! WARNING
▲
! CAUTION
▲
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.
To prevent electrical shock
and/or equipment damage,
disconnect electric power to
system at main fuse or
circuit breaker box until
installation is complete.
Do not use on circuits
exceeding specified voltage.
Higher voltage will damage
thermostat and could cause
shock or fire hazard.
NOTE
Thermostat installation
and all components of the
system shall conform to
Class II circuits per the NEC
code.
Read all instructions
thoroughly before beginning
installation.
This thermostat is intended for use
with a low voltage system. Do not
use on a line voltage system.
5
Installation
Do not exceed ratings shown in the
Specifications section, above. If in
doubt about the electrical ratings of
your heating/cooling system, have it
inspected by a qualified heating and
air conditioning contractor or
licensed electrician.
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.
INSTALLATION
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 with sand or other
absorbent material 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 and return to WhiteRodgers at 2895 Harrison Street,
Batesville, AR 72501 for proper
disposal.
REMOVE
OLD THERMOSTAT
Shut off electricity at main fuse or
circuit breaker box until installation
is complete AND the new thermostat is configured properly.
Remove the front cover of the old
thermostat. With wires still attached,
remove wall plate from the wall.
Identify each wire attached to the
thermostat using one of the labels
enclosed with the new thermostat.
Disconnect the wires from the old
thermostat one at a time. DO NOT
let the wires fall back into the wall.
Install the new thermostat using the
following procedures.
6
ATTACH BASE TO WALL
Remove packing material from the
thermostat. Place fingers of one
hand on the center top and bottom
portion of the thermostat. Grasp the
base in the other hand on top and
bottom center and gently pull
straight out. Forcing or prying on
the thermostat will cause damage to
the unit.
Place the base over the hole in the
wall where the wires come out and
mark mounting hole locations using
the base as a template. Drill 3/16”
pilot holes, and install screw
anchors in the wall.
Run wires through hole in base and
attach base to wall (see fig. 1).
Insert the wires into the terminals on
the base using the appropriate
wiring diagram and tighten the
terminal screws.
4
CONFIGURING
AND PROGRAMMING
L PH D SA SB SC OT
1
1
Before the power is turned on, the
thermostat must be configured to
operate properly with the system.
See the CONFIGURATION section
of this manual.
This thermostat can be programmed
for automatic temperature control.
Refer to Operating Instructions for
programming.
3
2
E
C R W3 W2 E2 W1 Y2 Y1 B
A1
P
O
G
Figure 1. Thermostat base and terminals
1 Mounting screws
2 Pull wires through this opening
3 Insert wires into terminal holes, then tighten screws
4 Screw anchors
7
Installation
MULTI-STAGE TERMINAL OUTPUTS
Refer to equipment manufacturers’
instructions for specific system
wiring information.
You can configure the thermostat for
use with either multi-stage electric
heat systems or multi-stage gas
systems. When configured for
electric heat, the G terminal
(blower/fan) will be energized on a
call for heat.
This thermostat is designed to
operate a single-transformer system.
If you have a two-transformer
system, cut and tape off one
transformer. If transformer safety
circuits are in only one of the
systems, remove the transformer of
the system with NO safety circuits. If
required, replace remaining transformer with a 75VA Class II
transformer. After disconnecting one
transformer, the two commons must
be jumpered together.
Use the terminal output information
below to help you wire the thermostat properly for your multi-stage
system. After wiring, see CONFIGURATION section for proper
thermostat configuration.
THERMOST
AT TERMIN
ALS (Upper)
THERMOSTA
TERMINALS
L
PH
Malfunction Light
Not Used
THERMOSTAT TERMINALS (Lower)
SYSTEM
E
C
R
W3/A1
W2
E2/P
W1
Y2
Y1
Multi-Stage
No function
24 Volt
(Common)
24 Volt
(Hot)
Not Used
Heat mode
2nd stage
No function
Heat mode
1st stage
Cool mode
2nd stage
Cool mode
1st stage
8
B
O
Energized in Energized in
Heat & Off
Cool mode
mode
G
Blower/Fan
Energized on
call for Cool*
* (and Heat if configured to Electric Heat)
HEAT PUMP TERMINAL OUTPUTS
Refer to equipment manufacturers’
instructions for specific system
wiring information.
You can configure the thermostat for
use with the following heat pump
system types:
HEAT PUMP TYPE 1. Singlestage compressor system; gas or
electric backup.
HEAT PUMP TYPE 2. Multi-stage
or two-compressor system; gas or
electric backup.
This thermostat is designed to
operate a single-transformer system.
If you have a two-transformer
system, cut and tape off one
transformer. If transformer safety
circuits are in only one of the
systems, remove the transformer of
the system with NO safety circuits. If
required, replace remaining transformer with a 75VA Class II
transformer. After disconnecting one
transformer, the two commons must
be jumpered together.
HEAT PUMP TYPE 3. System
requiring separate signals for heat
(W1, W2) and cool (Y1); gas or
electric backup.
9
Installation
Use the terminal output information
on the next page to help you wire
the thermostat properly for your
heat pump system type. After
wiring, see CONFIGURATION
section for proper thermostat
configuration.
HEAT PUMP TERMINAL OUTPUTS
THERMOST
AT TERMIN
ALS (Upper)
THERMOSTA
TERMINALS
L
PH
Malfunction Light
Not Used
THERMOSTAT TERMINALS (Lower)
SYSTEM
E
C
R
W3/A1
W2
E2/P
W1
Y2
Heat mode
3rd stage.
Emergency
mode
2nd stage
E2=Emergency mode
constant
output.
P=All other
modes
constant
output
Heat mode
2nd stage
No output
Y1
B
O
G
Single-stage compressor system; gas or electric backup
Heat Pump 1*
Emergency
mode
1st stage
24 Volt
(Common)
24 Volt
(Hot)
Not Used
SYSTEM
E
C
R
W3/A1
Heat and
Energized in Energized in
Cool mode
Heat, Off
Cool mode
1st stage
Emergency
(compressor)
mode
Blower/Fan
Energized on
call for Heat
and Cool
THERMOSTAT TERMINALS (Lower)
W2
E2/P
W1
Emergency
mode
2nd stage
E2=Emergency mode
constant
output.
P=All other
modes
constant
output
Heat mode
3rd stage
Y2
Y1
B
O
G
Multi-stage or two compressor system; gas or electric backup
Heat Pump 2*
Emergency
mode
1st stage
24 Volt
(Common)
24 Volt
(Hot)
Not Used
Heat and
Heat and
Energized in Energized in
Cool mode Cool mode
Heat, Off
Cool mode
2nd stage
1st stage
Emergency
(compressor (compressor
mode
2)
1)
* If system does not provide connection to E, jumper W1 to E to provide Aux heating in emergency mode.
10
Blower/Fan
Energized on
call for Heat
and Cool
THERMOSTAT TERMINALS (Lower)
SYSTEM
E
C
R
W3/A1
W2
E2/P
W1
Y2
Y1
No Output
Cool mode
1st stage
B
O
G
System requiring separate signals for heat (W1, W2) and cool (Y1); gas or electric backup
Heat Pump 3** Emergency
mode
1st stage
24 Volt
(Common)
24 Volt
(Hot)
Not Used
Heat mode
2nd stage.
Emergency
mode
2nd stage
E2=Emergency mode
constant
output.
P=All other
modes
constant
output
Heat mode
1st stage
** If system does not provide connection to E, jumper W2 to E to provide Aux heating in emergency mode.
11
Installation
Energized in Energized in
Heat, Off
Cool mode
Emergency
mode
Blower/Fan
Energized on
call for Heat
and Cool
CONFIGURATION
SWITCHES
RESET SWITCH
See the Troubleshooting section at the end of
this document for more information about the
function of this switch.
1
S18
E2/P SWITCH
The E2/P switch is located on the back of the
thermostat body (see fig. 2). This switch
controls how the E2/P terminal of the
thermostat will be energized. When the switch
is in the E2 position (down), the E2/P
terminal will be energized only when in
emergency heat. When the switch is in the P
position (up), the E2/P terminal will always
be energized except when in emergency heat.
Consult the equipment manufacturer or a
qualified heating/cooling service person
before setting this switch. If your system has
no connection to E2/P, no change in the
switch setting is required.
2
P S19
E2
1 Reset switch
2 E2/P switch
Figure 2. Switch locations on back of thermostat body
12
INSTALLER CONFIGURATION
BEFORE TURNING POWER
ON, please read the following
instructions. Before operating the
system, you must configure the
thermostat to operate properly
with your equipment.
The thermostat, as it comes from the
factory, is configured to operate a
standard multi-stage electric
forced hot air system with a single
stage air conditioning compressor
and fan. In this configuration, the
thermostat will turn on the fan
immediately on a call for heat. If
you are unsure whether your system
requires the thermostat to control
the fan, contact your furnace/air
conditioning system manufacturer or
a qualified heating/air conditioning
service person.
Your new thermostat has an Installer
menu, which allows you to customize the thermostat to meet your
requirements.
(The thermostat also has a User
menu and a Keypad Lockout
menu; these menus are explained
further in the CONFIGURATION
section.)
The menu settings can be changed at
any time to meet system or personal
requirements.
ENTERING THE
CONFIGURATION MENUS
After properly wiring the thermostat, turn on power to the system.
Momentarily press PROGRAM
RUN to make certain the thermostat is in the run program mode,
13
Installation
then press TIME FWD and TIME
BACK at the same time to enter the
User Configuration menu. When the
display changes to the first item in
the configuration menu, release the
buttons. Then press and hold SET
TIME and SET DAY for approximately 3 seconds to enter the
Installer menu. The display will
change to show the first item on the
Installer menu (multi-stage/heat
pump selection). Use the following
text, along with the Installer table
on page 16, to guide you through
the menu.
Once in the menu, you set each item
to the proper selection using
or
, then press TIME FWD to
change the display to the next item
or TIME BACK to return to the
previous item.
INSTALLER CONFIGURATION (cont.)
To exit the menu at any time, press
PROGRAM RUN .
MULTI-STAGE/HEAT PUMP
MODE.
(Installer table step 1.) Use this item
to select the system type (multistage or heat pump). IF YOU
HAVE A HEAT PUMP SYSTEM,
you must select HEAT PUMP here.
This sets up proper default values
for most heat pump systems. This
selection also makes available some
additional menu items that apply
only to heat pump systems.
HEAT PUMP COMPRESSOR CONFIGURATION.
(Installer table step 2; this menu
item is displayed only when heat
pump was selected in step 1.) Use
this item to select the number of
heat pump compressors and how
they are connected.
ELECTRIC HEAT FAN
CONFIGURATION.
(Installer table step 3.) This menu
item determines whether fan control
will be through the thermostat or
through the heating system. If you
have an electric heat or other system
that REQUIRES the thermostat to
control the fan, set this item ON.
This allows the thermostat to
energize the fan immediately on a
call for heat. If you are unsure if the
system requires the thermostat to
control the fan, contact the equipment manufacturer or a qualified
heating and air conditioning service
person. If your system controls fan
14
operation (as with most fossil fuel
systems), set this item to OFF. Note
that with heat pump systems, the fan
always cycles with the compressor.
SET CYCLE HEAT, COOL,
AUX (ANTICIPATION).
(Installer table steps 4 through 6;
step 6 is for heat pump only). These
items allow the cycle times in
heating, cooling and auxiliary (heat
pump systems only) to be increased
or decreased. The factory set values
can be adjusted higher for longer
cycles or lower for shorter cycles.
NOTE: Some manufacturers still
instruct you to set the anticipator to
the current draw of the equipment.
That instruction applies only to
mercury bulb or mechanical
thermostats; it does not apply to
this digital thermostat. As configured at the factory, this thermostat
will maintain an accurate temperature. No further adjustment is
necessary, although you can use
these menu items to customize the
performance of the thermostat to
your requirements.
The adjustment range for HEATING
is from 1 to 40 (9 to 40 for heat
pump). The factory preset is 5 (13
for heat pump). The adjustment
range for COOLING is from 9 to
40. The factory preset is 12 (13 for
heat pump). The cooling will not go
below 9 because compressors
require a longer cycle. The adjustment range for AUXILIARY (heat
pump only) is from 1 to 40. The
factory preset is 6.
The chart below shows how this adjustment range affects thermostat
performance.
HEATING
Anticipation Value
Cycle Length
COOLING
Differential Temperature Cycle Length Differential Temperature
1–8
Shorter
0.4–0.6 F (0.2–0.3 C)
N/A
N/A
9–20
Longer
0.6–1.0 F (0.3–0.6 C)
Shorter
0.6–1.0 F (0.3–0.6 C)
21–40
Hydronic
1.0–1.6 F (0.6–0.9 C)
Longer
1.0–1.6 F (0.6–0.9 C)
These numbers are approximate and represent operation with a typical
system. Actual temperature differentials and run times may vary widely
based on your building and equipment, as well as outdoor temperature
conditions.
15
Installation
INSTALLER TABLE
NOTE: You must be in the User Configuration Menu to enter the Installer Menu. Press TIME
time.
Step
Press Button(s)
Displayed (Factory Default)
Press
or
1
SET TIME
and SET DAY
(hold for approx.
3 seconds)
HEAT PUMP
MLTI STG
2
TIME FWD
(Heat Pump ONLY)
HEAT PUMP
(1)
to select:
FWD
and TIME
BACK
at same
COMMENTS
See
Page
Selects type of system. Selecting HEAT PUMP
makes additional menu items for heat pump
system available.
14
2 or 3
Selects:
1. one compressor on Y1.
2. two compressors on Y1, Y2.
3. one compressor on W1.
14
Fan cycles with call for heat if ON. Fan always
cycles with pump stages.
14
3
TIME
FWD
ELECT HEAT FAN
(ON)
OFF
4
TIME
FWD
SET CYCLE HEAT
(5 for multi-stage
13 for heat pump)
1 to 40 for multi-stage
9 to 40 for heat pump
Selects HEAT anticipation adjustment.
14
5
TIME
FWD
SET CYCLE COOL
(13)
9 to 40
Selects COOL anticipation adjustment.
14
SET CYCLE AUX
(06)
1 to 40
Selects AUXILIARY stage anticipation adjustment.
(Heat Pump ONLY)
14
COOL FAN DELAY OFF
(00)
0 to 127 seconds
Selects time delay for COOL fan OFF.
18
6
7
TIME FWD
(Heat Pump ONLY)
TIME
FWD
16
8
TIME
FWD
FAN DELAY ON
(01)
1 to 30 seconds
Selects time delay for fan ON. Applies only to
compressor stages for heat pump or COOL.
18
9
TIME
FWD
HEAT FAN DELAY OFF
(00)
0 to 127 seconds
Selects time delay for HEAT fan OFF only when
ELECT HEAT FAN (Step 3) is ON.
18
PUMP
(ON)
OFF
18
COMP LOCK
(OFF)
ON
Fossil Fuel Kit Alternative option. Turns compressor
OFF if Auxiliary is ON for longer than one minute.
(Heat Pump 1 & 2)
Selects compressor short-cycle protection enabled
or OFF.*
ECON
(OFF)
ON
Economizer option. Long Y1 cycles for cooling
with outdoor air.
19
HEAT-OFF-COOL-AUTO
or
HEAT-EMER-OFF-COOLAUTO (for heat pumps)
HEAT-OFF-COOL
or
HEAT-EMER-OFF-COOL
(for heat pumps)
Allows selection of HEAT and COOL or HEAT,
COOL and AUTO with SYSTEM button.
(EMER appears in sequence after HEAT if HEAT
PUMP is selected.)
19
10
TIME FWD
(Heat Pump ONLY)
11
TIME
FWD
12
TIME
FWD
13
TIME
FWD
PROGRAM
19
Returns to normal operation.
RUN
* NOTE: COMP LOCK OFF permanently defeats compressor lockout. You must turn this selection ON if you do not have a
system that already provides compressor short-cycle protection. Please see “Lockout Bypass Option” to temporarily override
compressor lockout.
17
Installation
PROGRAMMABLE
COOL FAN-OFF AND
FAN-ON DELAY.
(Installer table steps 7 and 8.) These
items allow a selection of 0 to 127
seconds of fan-off delay after the
thermostat has satisfied the call for
cool, or a fan-on delay of 1 to 30
seconds on a call for cool (or heat
pump compressor activation).
The fan-off delay allows the fan to
continue running after the compressor has shut off. This distributes the
cool air that would otherwise stay
trapped in the air conditioning coils
through the ducts. Ideally the timing
would be set so the fan shuts off just
as the cool air is exhausted. If this
timing is set too long the fan may
begin blowing warm air before it
shuts off. Shortening the fan-off
delay will prevent this.
A short delay to allow the A-coil
to cool off (or warm up in heat
pump) before the fan turns on may
be preferred. This also allows the
compressor and the fan to come
on at slightly different times,
which allows full power to the
compressor on start up. Recommended setting for fan-on delay is
10 seconds or less. A system that
does not have a high head pressure
cutout should have a delay of 10
seconds or less.
PROGRAMMABLE
HEAT FAN-OFF DELAY.
(Installer table step 9.) This item
allows a selection of 0 to 127
seconds of fan-off delay after the
thermostat has satisfied the call for
heat if ELECT HEAT FAN (Step 3)
is selected ON.
18
The fan-off delay allows the fan to
continue running after the burner,
heating element, etc. has shut off.
This distributes the heat that would
otherwise stay trapped in the ducts.
Ideally the timing would be set so
the fan shuts off just as the warm air
is exhausted. If this timing is set too
long the fan may begin blowing cool
air before it shuts off. Shortening
the fan-off delay will prevent this.
PUMP (FOSSIL FUEL KIT
ALTERNATIVE).
(Installer table step 10; heat pump
only) This item controls heat pump
compressor operation with a fossil
fuel auxiliary. This menu item may
eliminate the need for a separate
fossil fuel kit, although we recommend that you consult the heat
pump system manufacturer before
Lockout Bypass Option
using this feature instead of a kit.
This item will allow the thermostat
to turn the heat pump compressor
off if the auxiliary is on for more
than one minute, to prevent
compressor head pressure from
getting too high. To use this feature
instead of a kit, select PUMP OFF.
FOR QUALIFIED SERVICE
TECHNICIANS’ USE ONLY.
HOMEOWNERS SHOULD
NOT USE THIS FEATURE
DUE TO POSSIBILITY OF
EQUIPMENT OR PROPERTY
DAMAGE, OR PERSONAL
INJURY.
COMPRESSOR LOCKOUT.
(Installer table step 11). This
thermostat is capable of protecting
the system against premature
compressor failure by “locking out”
the compressor for at least five
minutes after each cycle. When the
thermostat is in compressor lockout,
the word COOL will flash on the
display. With heat pump systems,
the word HEAT will flash if the
lockout occurs during a heat cycle.
During this period, the compressor
will not be energized.
COMPRESSOR SHORT TERM
CYCLE PROTECTION
If this thermostat has been
configured to provide short-cycle
protection, during the 5-minute
lockout period the thermostat will
lock out the compressor to allow
head pressure to stabilize. To
override this feature for one cycle
while testing thermostat operation, press SET TIME and SET
DAY buttons at the same time.
Installation
19
If the system has short-cycle
protection, this item should not need
to be enabled. However, if your
system does not have short-cycle
protection, turn COMP LOCK
ON. This will protect the compressor from short-cycling and potential
premature compressor failure.
Note that COMP LOCK OFF
permanently disables compressor
lockout. If you need to temporarily
disable compressor lockout, please
see Lockout Bypass Option.
ECONOMIZER FEATURE.
(Installer table step 12). This item
allows longer Y1 cycles for cooling
with outdoor air.
DISABLING AUTOMATIC
CHANGEOVER MODE.
(Installer table step 13). This
thermostat, as configured at the
factory, provides automatic
changeover, which allows the
thermostat to switch between
heating and cooling to maintain
temperature. In this configuration,
when you press the SYSTEM
button, the thermostat will go
through HEAT-OFF-COOL-AUTO
modes (HEAT-EMER-OFF-COOLAUTO for heat pumps). Select
HEAT(-EMER)-OFF-COOL to
disable the automatic changeover
feature.
CHECK THERMOSTAT OPERATION
FAN OPERATION
HEATING SYSTEM
If your system does not have a G
terminal connection, skip to
“Heating System” section.
1. Turn power on to the system.
2. Press PROGRAM RUN .
3. Press FAN until FAN ON is
displayed. The fan should begin
to operate.
4. Press FAN until FAN AUTO
is displayed. The fan should stop
operating.
20
1. Press PROGRAM
RUN
.
2. Press SYSTEM until HEAT is
displayed. If the heating system has
a standing pilot, ensure that it is lit.
3. Press
to adjust thermostat
setting above room temperature. The
heating system should begin to
operate.
4. Press
to adjust temperature below room temperature. The
heating system should stop
operating.
COOLING SYSTEM
! CAUTION
To prevent compressor and/or
property damage, if the outdoor
temperature is below 50°F
(10°C), DO NOT operate the
cooling system.
1. Press PROGRAM RUN .
2. Press SYSTEM until COOL is
displayed.
3. Press
to adjust thermostat
setting below room temperature.
The fan should come on (after the
fan-on delay time, if any), followed
by cold air circulation.
4. Press
to adjust temperature setting above room temperature.
The cooling system should stop
operating, and the fan should stop
running (after the fan-off delay time,
if any).
MULTI-STAGE/HEAT PUMP
AUXILIARY OPERATION
TEST
Follow these steps to energize all
stages of heat or cool to permit
system checks during installation.
to raise
HEAT: Press
temperature setting to 99°F, then
hold for five seconds. The second
and third stage heat relays will
energize immediately for test
purposes. The LED indicator will
glow green for first stage and yellow
for second stage.
21
COOL: Press
to lower
temperature setting to 45°F, then
hold for five seconds. The second
stage cool relay will energize
immediately for test purposes. The
LED indicator will glow green for
first stage and yellow for second
stage.
EMERGENCY (heat pump only):
Press SYSTEM to select EMER
mode. The LED indicator will glow
red for emergency mode. A flashing
light indicates a malfunction in the
system.
TROUBLESHOOTING
RESET BUTTON
If the thermostat does not respond
when keys are pressed, or the
thermostat is not operating properly,
you may use the reset button located
on the back of the thermostat body
(see fig. 2). Thermostat programming and configuration will not be
affected by pressing the reset button.
However, the clock will need to be
reset.
RESETTING THERMOSTAT
CONFIGURATION AND
PROGRAMMING
The thermostat can be reset back to
default programs and configuration.
Removing power from the thermostat will not reset it, because the
default settings are maintained in
permanent memory. Before
resetting the thermostat, you may
want to make note of the previously
selected configuration and programming. You must reconfigure and
reprogram the thermostat after
resetting it using this method.
22
To reset the thermostat, press and
release PROGRAM RUN , then
press the FAN , TIME BACK and
buttons at the same time. This
will reset the thermostat to factory
default programs and configuration.
The display will momentarily go
blank, then all segments on the
display will momentarily be shown.
The thermostat will then go into the
HOLD mode and will maintain
factory preset temperatures.
CONFIGURATION
The configuration menus allow you
to set certain thermostat operating
characteristics to your system or
personal requirements.
To enter the User Configuration menu,
press PROGRAM RUN to make sure
the thermostat is in the run program
mode, then press TIME FWD and
TIME BACK at the same time. The
display will show the first item in the
configuration menu.
The following charts (pages 24 & 25)
describe each item on the menus. Press
TIME FWD to move forward to the
next item in the menu or TIME BACK
to move backward to the previous item.
Set these according to your personal
preference using
or
. To
enter the Keypad Lock menu, while in
the User Menu, press and hold TIME
FWD and TIME BACK for at least
two seconds.
To exit either menu and return to normal
operation, press PROGRAM RUN . To
re-enter to the User menu at any time
press PROGRAM RUN , then press
TIME FWD and TIME BACK at the
same time. While in the menus, if you
do not press any buttons for two
minutes, the thermostat will revert to
normal operation.
23
Configuration
User Menu
Step
1
Press Button(s)
Displayed
(Factory Default)
Press
or
to select:
COMMENTS
Ref
Page
TIME FWD
and TIME BACK
at same time
for 2 seconds
0˚F
(room temperature)
5 LO to
5 HI
Adjusts temperature display higher or lower.
30
Selects EMR option ON or OFF or L ON.
30
Adjusts temperature display to F or C.
31
Set Fan (one shot) option. Set the duration of a
temporary fan option.
31
2
TIME
FWD
EMR
(ON)
OFF
or ON L
3
TIME
FWD
(˚F)
˚C
4
TIME
FWD
SET FAN
(0)
0 - 6 HRS
5
TIME
FWD
BEEP
(ON)
OFF
Not available on 1F92-371.
n/a
6
TIME
FWD
HEAT FAST
(OFF)
ON
OFF delays starting second stage for economy.
ON eliminates delay to energize second stage.
31
7
TIME
FWD
COOL FAST
(OFF)
ON
OFF delays starting second stage for economy.
ON eliminates delay to energize second stage.
31
8
TIME
FWD
FONE (Icon)
(OFF)
ON
Telephone RUN program feature. Requires optional
X10 system.
32
24
User Menu (Continued)
9
TIME
FWD
COMP RUN TIME
(00)
(Compressor run time
in hours)
Shows accumulated time compressor has run.
To reset to 00, press
and
.
32
10
TIME
FWD
AUX RUN TIME
(00)
(AUXILIARY run time
in hours)
Shows accumulated time AUXILIARY has run.
To reset to 00, press
and
.
32
11
PROGRAM
Returns to normal operation.
RUN
Keypad Lockout Menu (access from User Menu)
Step
1
Press Button(s)
Displayed
(Factory Default)
TIME FWD
and TIME BACK
(hold for two
seconds)
PART LOCK
(OFF)
ON
Partial Keypad lockout OFF or ON.
32
LOCK
(OFF)
ON
Total Keypad lockout OFF or ON.
32
2
TIME
3
PROGRAM
FWD
Press
or
to select:
COMMENTS
Returns to normal operation.
RUN
25
Configuration
Ref
Page
PROGRAMMING
MANUAL OPERATION
Your Comfort-Set 90 thermostat can
be used to control temperature
manually (without programming).
For manual operation, press SYSTEM
to select HEAT or COOL
COOL, then
press PROGRAM HOLD . Use
or
to set the temperature as desired.
PROGRAMMED OPERATION
Planning Your Program
The sample schedule (page 28)
shows the factory installed programs
for heating and cooling. The heating
and cooling programs are separate,
and must be programmed individually. To use the factory program, set
the clock and press PROGRAM
RUN with the thermostat SYSTEM
set to Heat
Heat, Cool
Cool, or Auto
Auto.
Fill out the blank schedule (page 29)
with the time and temperatures you
want in your program. Fill in every
space for your program.
The same temperature can be
repeated more than once if you do
not want the temperature to change
over several time periods.
Entering Your Program
Clock:
To Set the Clock
1. Press PROGRAM
RUN
4. Press PROGRAM
.
BACK
RUN
to set
.
To Set the Day
Day:
5. Press SET DAY . The display
will indicate a day of the week. Use
TIME FWD or TIME BACK to set
to the current day of the week.
6. Press PROGRAM
2. Press SET TIME . The display
will show the hour. Use TIME
FWD or TIME BACK to set to the
current hour and AM/PM designation.
3. Press SET TIME again. The
display will show minutes. Use
26
TIME FWD or TIME
to the current minutes.
RUN
.
To Set the Program
Program:
7. Press SYSTEM to select HEAT
(for heating program) or COOL (for
cooling program).
8. Press PROGRAM VIEW one
time. The display will show MOR
MOR,
the settings for time and temperature
and MON
MON, TUE, WED, THU, FRI.
9. Press TIME FWD or TIME
BACK to set the time on the display
as selected in your HEATING or
COOLING SCHEDULE. Be sure
to check the AM or PM on the
display.
10.Press the red
or blue
key to adjust the temperature
to match your schedule. If you want
the fan ON continuously during this
period, press FAN .
11.Press PROGRAM VIEW one
time. MOR on the display will
change to DAY . Repeat steps 9 and
10 to enter time and temperature for
this period.
12.Press PROGRAM VIEW to
continue through the entire
schedule, entering time and
temperature for each period. When
you are satisfied that your program
matches your schedule, press
PROGRAM RUN . Programming
is now complete for this mode and
your program is running.
13.To program the other mode,
repeat the procedure from step 6.
27
Programming
5/2 Day Sample Program Schedule
(Shows factory programming)
5-DAY
2-DAY
Start Time
Temperature
Start Time
Temperature
MORNING
H
E DAY
A EVENING
T
NIGHT
(MOR)
6:00 AM
70 F (21 C)
6:00 AM
70 F (21 C)
MORNING
C
O DAY
O EVENING
L
NIGHT
(DAY)
8:00 AM
62 F (17 C)
8:00 AM
62 F (17 C)
(EVE)
5:00 PM
70 F (21 C)
5:00 PM
70 F (21 C)
(NHT)
10:00 PM
62 F (17 C)
10:00 PM
62 F (17 C)
(MOR)
6:00 AM
78 F (25 C)
6:00 AM
78 F (25 C)
(DAY)
8:00 AM
85 F (29 C)
8:00 AM
85 F (29 C)
(EVE)
5:00 PM
78 F (25 C)
5:00 PM
78 F (25 C)
(NHT)
10:00 PM
82 F (27 C)
10:00 PM
82 F (27 C)
28
5/2 Day Personal
Program Schedule
5-DAY
Start Time
MORNING
H
E DAY
A EVENING
T
NIGHT
(MOR)
MORNING
C
O DAY
O EVENING
L
NIGHT
(MOR)
2-DAY
Temperature
(DAY)
(EVE)
(NHT)
(DAY)
(EVE)
(NHT)
29
Start Time
Temperature
FEATURES
CONFIGURATION
MENU FEATURES
Adjustable Temperature
Display.
(User menu, Item 1) The room
temperature display can be adjusted
to read higher or lower by following
the User menu and adjusting the
temperature to a higher or lower
value. The thermostat is calibrated at
the factory to display a very accurate
room temperature, but due to
various conditions and/or personal
preference, you may wish to adjust
the thermostat display higher or
lower (up to 5°F). For example, if
the thermostat displays a room
temperature of 70° but you want it
to display 73°
73°, you can adjust it. To
adjust, refer to the CONFIGURATION section (page 24, item 1).
Selectable Energy
Management Recovery (EMR).
(User menu, Item 2) EMR causes
the thermostat to start operating the
system early in order to make the
building temperature reach your
program setpoint at the time you
specify. In multistage heating, the
thermostat will start 8 minutes early
for every 1°F difference between the
room temperature and the next
programmed temperature. In cooling
and heat pump applications, the
thermostat uses 15 minutes per °F.
For heating applications in large
buildings where extra time to reach
the set temperature may be desired,
EMR Long may be selected. When
EMR ON L is selected in the user
menu (page 24, item 2) the thermo30
stat uses 15 minutes per °F.
EXAMPLE: If the temperature in
the room is 65°F and the thermostat
is programmed for 70°F at 7 AM,
the thermostat will start approximately 40 minutes early. The
difference between the room
temperature (65°F) and the setpoint
(70°F) is 5°. 5° X 8 minutes per °F
= 40 minutes. The setpoint on the
display will actually change to
display 70° about 40 minutes early.
The maximum time the thermostat
can start early in heating is 75
minutes (or 3 hours, 45 minutes if
EMR ON L is selected). The
maximum time in cooling and heat
pump applications is 3 hours and 45
minutes. Cooling or heat pump
applications start earlier because it
takes longer to reach the desired
temperature. This feature also
minimizes the use of the auxiliary
stages if conditions are such that the
compressor stages are adequate to
reach the desired setpoint.
To select or deselect this feature,
refer to the CONFIGURATION
section (page 24, item 2).
Fahrenheit or Celsius Temperature Display.
(User menu, Item 3) This thermostat is factory set to display
temperature in Fahrenheit. If you
prefer, you may configure the
thermostat to display Celsius. See
the CONFIGURATION section
(page 24, item 3).
Single Period Fan Control.
(User menu, Item 4) This feature
allows you to have the fan run for a
predetermined period of time by
pressing the FAN key twice within
1.5 seconds. If a time is set in the
User menu (page 24, item 4) the
AN, # hrs and
display will show FAN
PRG FAN ON for six seconds.
After six seconds the display will
continue to indicate PRG FAN ON
for the time period selected. After
this time period, the fan will return
to normal operation. To return the
fan to normal operation before the
end of the time period, press the
FAN key.
Heat Fast.
(User menu, Item 6) This feature,
when set to ON, will bring the
second stage of heating on any time
you manually raise the temperature
three or more degrees above room
temperature. If Heat Fast is set to
OFF, the thermostat will delay the
second stage from 0 to 30 minutes
based on how well the first stage is
keeping up with your setting.
Cool Fast.
(User menu, Item 7) This feature,
when set to ON, will bring the
second stage of cooling on any time
you manually lower the temperature
three or more degrees below room
temperature. If Cool Fast is set to
OFF, the thermostat will delay the
second stage from 0 to 30 minutes
based on how well the first stage is
keeping up with your setting.
31
Features
Activate RUN PRG
by Telephone.
(User menu, Item 8) With the
optional X-10 Touch Tone Controller and a Universal Low Voltage
Module, UM506, installed, you can
make a telephone call to run your
program if the thermostat has been
set to Hold or Vacation Hold. These
optional items are available from
www.x10.com, or 800-675-3044.
Compressor Run Time.
(User menu, Item 9 and 10) You
can see how long the compressor
has run (in hours) by viewing the
User table, Item 9. You can see how
long the system Auxiliary has run
(in hours) by viewing the User table,
Item 10. These can be reset to 00
when displayed by pressing
and
at the same time.
Keypad Lockout.
(Keypad Lockout table) This
security feature allows you to lock
out the keypad to prevent unauthorized tampering with the program.
Two levels of security are available,
Total Keypad Lockout or Partial
Keypad Lockout. Total Keypad
Lockout renders all buttons
inoperative. Partial Keypad Lockout
allows only the
or
to
operate for temporary temperature
overrides. It also limits the temperature to the maximum heating and
minimum cooling temperatures used
in your program. This is especially
useful in buildings where unscheduled events are common. Anyone
can change the temperature, but
only between the temperatures you
set and only for the number of hours
32
you specify if you set up your Hold
Till timing (see “Temporary
Program Override” (page 37). To
select or deselect this feature, refer
to the CONFIGURATION section
(page 25, Keypad Lock menu).
TRADITIONAL FEATURES
Automatic Changeover.
If you have a heating/cooling
system, the thermostat can be set to
automatically switch the system
between heating and cooling as
needed. To set your thermostat to
this operating mode, press SYSTEM
button until AUTO is displayed on
the screen.
Factory Preprogrammed
Times and Temperatures.
This thermostat has been programmed at the factory. The chart in
the programming examples section
lists these factory settings. If the
times and temperatures are the same
as your schedule, you may simply
run the factory installed program by
pressing PROGRAM RUN .
Compressor Short-Cycle
Protection.
Your thermostat is designed to
protect your system against
premature compressor failure by
“locking out” the compressor. This
ensures that the compressor will stay
off for approximately five minutes
between cycles. When the thermostat is in compressor lock-out, the
word COOL will flash. During this
period, the compressor will not be
energized.
Programmable Fan Control.
This feature allows you to have your
fan operate continuously through
one or more programmed time
periods. This is useful if you want to
have constant air circulation during
a specific time period. If you do not
use this feature, the fan will cycle
normally with the heating and
cooling system.
To program the fan, follow the steps
in the PROGRAMMING section. In
each time period, you can press the
FAN key to select a continuous fan
or a normally cycling fan. The
GF
AN ON
display will show PR
PRG
FAN
when continuous fan is selected.
This means at the time you set the
period to start, the fan will come on
and run continuously until the next
program time period.
Example: Your thermostat is
programmed with the original
factory settings for the Monday
MOR period in the heating mode.
Pressing PROGRAM VIEW will
display MOR
MOR, 6AM and 70
70.
Pressing the FAN key will toggle
the programmable fan ON and a
second press would turn it back
GF
AN ON is in the
PRG
FAN
OFF. When PR
upper right of the display, your
thermostat is programmed to adjust
the temperature to 70° at 6AM and
also bring the fan on to run
constantly until the next program
time period.
At the next time period you may
choose to continue the program fan
33
Features
feature. Change to the next program
period and press the FAN key until
PR
GF
AN ON is on the display.
PRG
FAN
The fan will continue to run through
this period as well as the previous
one.
If the thermostat is in a period with
continuous fan and you want the fan
G
to cycle, press the FAN key. PR
PRG
FAN ON on the display will turn
off.
Air Filter
Change-Out Indicator.
This feature allows the thermostat to
display CHNG FLTR (change
filter) after a set time of fan
operation. This is a reminder to
change or clean your air filter. The
factory set interval for CHNG
FLTR to be displayed is 200 hours
of fan operation. This can be set
anywhere from 0 to 1950 hours in
25 hour increments. A selection of
00 will cancel this feature.
When CHNG FLTR is displayed,
you can clear it by pressing the
FILTER key. This resets the timer
and starts counting the hours until
the next filter change.
The following steps will allow you
to change the number of hours for
filter change-out.
1. If CHNG FL
FLTR
TR is on the display,
press the FILTER key once to reset
the timer. If you do not see CHNG
FLTR proceed to step 2.
2. Press the FILTER key, The
TER
display will show SET FIL
FILTER
TIME and the number of hours
remaining before CHNG FLTR
34
indicator will display.
3. Press the FILTER key a second
time. The display will show SET
FIL
TER TIME and will show the
FILTER
number of hours to filter change.
4. Press TIME FWD or TIME
BACK to change the time to your
requirements.
5. Press PROGRAM RUN to
return to the normal operating mode.
NOTE: If unsure what interval to
use between filter changes or
cleaning, contact the manufacturer
of your heating/cooling equipment.
System and Thermostat
Diagnostics.
The display will indicate CHECK
SYS if the room temperature does
not rise within two hours of the call
for heat. After two hours the
thermostat will quit calling for heat
for one minute (this allows some
furnaces to reset) and call for heat
again. It will repeat this sequence
three times. If the temperature still
does not rise, it will continue to call
for heat. This normally indicates the
heating system is not working
correctly. You may wish to consult
your furnace manufacturer or
service person.
The display will indicate CHECK
ST
AT if one of the following
STA
occurs.
• One of the keys is stuck down or
in.
Check the keys, make sure nothing
is pushing them in.
• The thermostat sensor is not
functioning. If using a remote
sensor, check connections, wiring
and power. Refer to remote sensor
installation instructions
After checking the above, press
PROGRAM RUN to reset the
display. If this does not clear the
display, disconnect power for five
minutes.
If these checks fail to solve the
problem, the thermostat should be
replaced.
Temporary Program Override.
Any time your program is running
and you would like to override it for
a specific amount of time, press
or
until the temperature you want is displayed. The
display will indicate HOLD
HOLD, and the
number of hours remaining in the
hold period will be indicated with
the word HRS
HRS. To adjust the length
of time for the override, press
TIME FWD or TIME BACK .
HOLD TILL will be displayed as
well as the HOLD period expiration
time. Press the TIME FWD or
TIME BACK keys until you reach
the time you would like it to resume
the program. The TIME FWD or
TIME BACK keys adjust the time in
15 minute increments. This
programmed hold time has a 19
hour maximum. Beyond 19 hours
you may wish to use the vacation
hold feature (page 36). If you need
to, you can adjust the temperature up
or down.
Indefinite Program Hold.
If you want to operate the thermostat to keep a set temperature
35
Features
without a program running, press
or
PROGRAM HOLD . The
keys can be used to raise or
lower the temperature. The
thermostat will hold the set
temperature until you return to the
program by pressing PROGRAM
RUN .
Programmable Vacation Time/
Temperature Operation.
The VACATION key allows you to
program the thermostat to hold a
constant temperature for 1 to 29
days. At the end of the day and time
you select, the thermostat will return
to normal program operation.
To program the number of days,
press VACATION. VACA HOLD
TILL will be displayed. The display
will also show DAYS (flashing) and
the number 5 to indicate the factory
default of a 5 day period. To change
the number of vacation days, press
TIME FWD or TIME BACK . Press
or
to set the temperature you wish to maintain while
away. While still in the vacation
mode, set the time you want the
program to resume by pressing SET
TIME once. The current time will
display. Press only TIME FWD to
adjust the time in 15 minute
increments. You may wish to select a
few hours in advance of your
expected return to allow time to
reach the desired temperature. Your
thermostat is now programmed to
hold the temperature you selected
through your vacation for HEAT,
COOL, or AUTO.
After 20 seconds the display
will return to time/temperature
36
alternation, and will display VACA
VACA.
Pressing VACATION again will
activate the vacation mode settings.
Pressing PROGRAM RUN cancels
this feature and begins running your
normal program.
Daylight Savings Time Button.
One button adjustment allows you to
change your thermostat clock
between Standard Time and
Daylight Savings Time. Simply
push the DAYLIGHT SAVINGS
TIME key to advance the time
forward one hour in the Spring. In
the Fall press the DAYLIGHT
SAVINGS TIME key twice to fall
back an hour. If you push it three
times in a row (in less than 30
seconds) it will return to the original
time setting. After clock adjustment,
press PROGRAM RUN to resume
your normal program.
Large Lighted Liquid Crystal
Display (LCD).
The large numbers and letters on
your LCD screen make it easy to
see. In low light conditions, press
the button on top of the thermostat
and the display will light up for
three seconds. For ten minutes after
pressing the light button, pressing
any other button will light the
display for ten seconds.
The thermostat display alternately
shows the current time and the
current temperature on the left side.
The display also shows the
temperature you have programmed
or set on the right side of your
screen.
Arm Chair Programming.
The thermostat uses 24 VAC power
supplied by the system for normal
operation. The electrolytic capacitor
allows you the added convenience of
programming the thermostat even
when not attached to the wallplate,
Attach the thermostat to the
wallplate and allow the capacitor to
charge for at least one hour. After
the capacitor is charged you will
have approximately one hour after
removing the thermostat from the
wallplate to configure and program
the thermostat.
Thermostat Startup After Total
Power Loss.
On installation, or when power is
restored after a total power loss to
the thermostat, your thermostat will
automatically maintain a heating
37
temperature of 62°F (16°C) and a
cooling temperature of 85°F (29°C).
If the 24 volts from the Heating/
Cooling transformer is lost, your
thermostat will lose its display in 2
minutes and may lose time in about
5 hours. This hold up time will be
much shorter if the control had not
been powered for at least 4 hours
prior to the power outage. When
power is restored, the thermostat
will return to the temperatures listed
above.
If this happens, set the clock and
day of the week (use PROGRAMMING steps 1 through 6 from
“Entering Your Program” page
26), then select HEAT, EMER,
COOL or AUTO using the SYSTEM
key, and press PROGRAM RUN
to resume operation with your
Features
previously set program.
After a power loss, the remote
sensors will be operating properly,
however, temperature at the remote
sensors can not be displayed until
PROGRAM RUN is pressed.
Second Stage Time Delay.
Your thermostat is designed to
determine the optimum time to
activate the second stage. Simply
raising the temperature in heating or
lowering it in cooling will not
always force the thermostat to bring
the second stage on quickly. There is
a time delay from 0-30 minutes
depending on the performance of the
first stage of the system.
Example: For the last 2 hours the
thermostat is set on 70° and the
room temperature is 70° with the
equipment using only the first stage
of heat. Since the equipment is
keeping the temperature within 1
degree of setpoint, the thermostat
will delay second stage for a longer
time if you manually raise the
temperature or if the room temperature quickly changes. Once the
second stage comes on, it will come
on sooner the next time there is a
difference between the setpoint and
the room temperature. The net effect
of the staging program is that when
the first stage is capable of making
temperature the second stage will
delay longer. When the thermostat
calculates that first stage cannot
make temperature in a reasonable
time, the second stage will come on
sooner. This built in function
automatically optimizes the use of
38
additional stages of heat or cool.
Should your needs require a
modification of the factory default
settings, refer to “Heat Fast” or
“Cool Fast” instructions on page 31.
INDEX
Activate RUN PRG
by Telephone ------------------- 32
Adjustable Temperature Display 30
Air Filter Change-out Indicator - 34
Arm Chair Programming -------- 37
Automatic Changeover ---------- 32
Auxiliary Run Time -------------- 32
COMPONENTS ------------------ 2
Thermostat Buttons ------------- 2
Display --------------------------- 3
Compressor Run Time ----------- 32
Compressor Short-Cycle
Protection -------------------------- 33
CONFIGURATION ------------- 23
User Menu Table --------------- 24
Keypad Lockout Menu Table - 25
Cool Fast --------------------------- 31
Daylight Savings Time Button -- 36
Energy Management Recovery -- 30
Fan Control, Single Period ------ 31
Fan Control, Programmable ----- 33
Factory Preprogrammed --------- 32
Fahrenheit or Celsius Temperature
Display ----------------------------- 32
FEATURES
Configuration Menu ----------- 30
Traditional ---------------------- 32
Heat Fast --------------------------- 31
Indefinite Program Hold --------- 35
INSTALLATION ------------------ 4
INTRODUCTION ---------------- 1
Keypad Lockout ------------------ 32
Liquid Crystal Display ----------- 37
Operation
Manual -------------------------- 26
Programmed -------------------- 26
ORIENTATION ------------------- 2
39
Program
Entering Your ------------------- 26
Planning Your ------------------ 26
Temporary Override ----------- 35
PROGRAMMING --------------- 26
Schedule
Sample Program --------------- 28
Personal Program -------------- 29
Set
Clock ---------------------------- 26
Day ------------------------------ 26
Program ------------------------- 26
System and Thermostat
Diagnosis ----------------------- 34
Temporary Program Override --- 35
Thermostat Startup After Total
Power Loss ------------------------ 37
Vacation ---------------------------- 36
37-6422C
0513
Index
NOTES
NOTES
The Emerson logo is a
trademark and a service mark
of Emerson Electric Co.
White-Rodgers is a division
of Emerson Electric Co.
PART NO. 37-6422C
Replaces 37-6422B
0513