Welcome to the world of comfort and energy savings with your new Honeywell T7516A,B,C Energy
Management Thermostat brought to you by your energy utility. This thermostat allows up to seven
separate days of programming. You can set the thermostat to control the temperature in your
home, your water heater, and another appliance (such as a swimming pool pump) according to
your personal schedule and preferences. This thermostat keeps you comfortable, and saves you
energy.
Besides being programmable, this thermostat contains a communications module that allows your
energy utility to communicate with your thermostat so you can take advantage of ResidentialService Variable Price (RSVP) Rate.
Residential Service Variable Price (RSVP) Rate. The T7516A,B,C Energy Management Thermostat informs you of the energy price in effect at any given time (see Fig. 1). A special feature of this
thermostat allows you to program it to automatically adjust your energy use for each price. These
prices are: Low (least expensive), Medium, High, and Critical (most expensive). The thermostat
also provides you with the ability to operate your electric water heater and another appliance based
on the price in effect.
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A
AM
INDICATOR FOR RSVP CURRENT PRICE
Fig. 1. RSVP Rate indications.
3
M12661
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Table of Contents
Getting to Know Your Thermostat ............................................................................................ 6
Standard Display .....................................................................................................................6
The thermostat has a display, a covered 15 key
keypad, a covered battery compartment, and
an indicator light on the front panel (see Fig. 2).
Fig. 2 shows the thermostat, display, and all
display segments.
Standard Display
The current room temperature and time are
always part of the standard display. Other
displayed data includes heating and air
conditioning (Heat/Cool) status, day of the
week, schedule period, water heater and
appliance status, and the RSVP current price
(see Fig. 2). The thermostat display automatically sequences several displays (see Fig. 3).
AM
Scientific
Atlanta
TM
PM
Program Time Temperature
Device
Warmer
Ahead
Day of
Period
Response
Week
Time
Price
Cooler
Back
Present
Hold
Setting
Clear
INDICATOR LIGHT
Water
On-Off-Clr
Appl
On-Off-Clr
Fan
Auto-On
Heat
Cool
M15533
Fig. 2. T7516 Energy Management
Thermostat.
NOTE: The colon in the time display blinks,
except when in the programming
mode.
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E
STANDARD
1
AM
HOLD
TEMPORARY
THIS SCREEN IS ALWAYS PART OF THE DISPLAY SEQUENCE.
1
ONLY APPEARS: WHEN YOUR ENERGY UTILITY SIGNALS IT TO DO SO; DURING A LOSS OF COMMUNICATION,
2
OR A THERMOSTAT FAULT.
2
A SERIES OF SCREENS THAT PROVID
THE PHONE NUMBER TO CALL TO
CONTACT YOUR ENERGY UTILITY.
BATTERY LOW INDICATION
Fig. 3. Display sequence.
7
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Keypad
Lift the front cover to see the keypad. From the
keypad, you can operate and program the
thermostat. To operate the thermostat, press
and release the keys.
NOTE: The thermostat registers all program-
ming inputs immediately and maintains them until manually changed.
Low batteries or power outages do
not delete thermostat programming.
Battery Compartment
The battery compartment under the left side of
the front panel contains two AA batteries that
keep the clock running during a power interruption.
Replacing Thermostat Batteries
IMPORTANT
Install batteries to maintain the time in
the event of a power loss. Although
the thermostat has a low battery
indicator, replace the batteries once
every two years to prevent the
thermostat from losing the time during
a momentary power loss.
NOTE: If the time is ever incorrect, you can
not change it. Your energy utility
periodically updates the clock to the
correct time.
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As the batteries run low, the thermostat display
sequence includes an indication of this. The
low battery indication appears one to two
months before the batteries run out completely.
Replace the batteries as soon as possible after
the indication appears.
You need two AA alkaline batteries (not
supplied); non-alkaline batteries do not last as
long, and can leak, damaging the thermostat or
wall surface. To replace the batteries:
1. Use a coin to carefully remove the
battery door (see Fig. 4).
2. Follow the directions on the label
revealed by removal of the battery door.
REMOVING
BATTERY
M1719C
DOOR
Fig. 4. Battery Door Removal.
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Indicator Light
This light indicates primarily the emergency
heat (or auxiliary heat). It also indicates
whether Critical Time-of-Use Pricing is in effect,
When the light is off, the emergency heat (or
auxiliary heat) is off.
When the light is on, the emergency heat
(or auxiliary heat) is on.
or is scheduled (see Table 1).
Table 1. Critical RSVP Price Indications.
Auxiliary (or
Emergency) HeatIndicator LightCritical RSVP Price
OffFlashes three times, then pauses.In effect.
Flashes once, then pauses.Scheduled to start within 30 min.
1
On
Flashes twice, then remains on.In effect.
Periodically turns off once.Scheduled to start within 30 min.
1
Heat pump thermostats only.
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Programming Overview
Complete the Personal Programming Charts
(Tables 3 through 6) before you program your
thermostat.
You can program the thermostat with separate
schedules for heat, cool, electric water heater,
and one appliance (such as a pool pump).
Each device schedule is for seven separate
days and up to four periods. For convenience,
you can program the seven days individually,
or simultaneously in any one of the following
groupings: Monday through Sunday, Monday
through Friday, or Saturday and Sunday. The
four periods are: Morning (MORN), Day (DAY),
Evening (EVE), and Night (NIGHT).
User Operations
Present Setting
Press and release the Present Setting key to
return to standard display from any other
display. The display first switches to show the
current settings. After a few seconds the
thermostat returns to the standard display.
NOTE: If the heating and cooling are both off,
the display will show Set - -.
CAUTION
Equipment Damage Hazard.
Use of sharp fingernails or pencil
points can damage the keypad
beyond repair.
Use the ball of your finger or a soft
pencil eraser when pressing the keys.
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Overrides
8
0
1
5
An override is a setting used to manually
change the setting without affecting the
program memory.
Hold
A hold is a setting used to override the program
for an extended period of time. A hold maintains a setting until manually changed.
From the standard display, press the Clear key
to clear any temperature override in effect.
M1550
To clear Water or Appliance overrides, press
the Water or Appl key until the display shows
neither On nor Off underneath Water or Appl.
Water
On-Off-Clr
M1547
Appl
or
On-Off-Clr
M1547
The hold display indicates all items currently
set on hold.
Press and release the Hold key to get to the
hold display. Modifying any item being permanently held (with Warmer, Cooler, Water, andAppl keys) also brings up the hold display.
Press Warmer or Cooler keys with hold
displayed to increase or decrease the setpoint.
12
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Press Water or Appl keys to toggle the hold
6
status.
Water switches between: no hold and hold
off.
Appl cycles through: no hold, hold on, hold
off, and back to no hold.
NOTES:
— Only items being held appear on the
display.
—Water cannot be permanently held on,
but it can be permanently held off.
— With no temperature displayed, no
hold exists.
Temporary
A temporary is a setting used to override the
program for a brief period of time. Temporary
settings maintain a setting until either the
RSVP Price changes to Critical, or the thermostat enters the next scheduled period.
The temporary display indicates the items set
on temporary.
M1550
From the standard display, press the Warmer
or Cooler key to get to the temporary display.
Use these keys to increase or decrease the
room temperature setting.
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Press Water or Appl keys to display the
9
temporary display and toggle the water or
appliance state.
NOTES:
—A temporary cannot clear or replace a
hold.
—With a hold in effect, an attempt to set
a temporary changes the display to
the hold display.
— Only items being held appear on the
display.
M1550
— In spite of period changes, a tempo-
rary Water override, by default, lasts
for one hour.
— With no temperature displayed, no
temporary exists.
— Press the Hold key twice to get to the
temporary display.
—A temporary ends when the RSVP
price changes to a rate programmed
to switch on the Water or Appliance.
Recovery From Setback
Recovery is the time when the thermostat
operates the heating or cooling equipment to
return the house from the energy savings to
the temperature you prefer when you are
present and awake.
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This thermostat uses a recovery process that
turns your heating/cooling equipment on or off
at the time you program the temperature to
change. For example, if you set the thermostat
to heat to 72°F at 6:00 AM, the heating
equipment comes on at 6:00 AM and begins
warming the house to 72°F. If you want the
temperature in the house to be 72°F at 6:00
AM, you must set the thermostat to turn on
earlier; for example, 5:30. (The amount of time
required to warm or cool your house to the
temperature you want depends on many
factors such as the size of your heating/cooling
equipment and the outdoor temperature.)
NOTE: If the thermostat is for a heat pump
system, the thermostat uses a method
of recovery that helps reduce the use
of auxiliary heat.
Programming Your Thermostat
IMPORTANT
Press and release the Present Setting
key to exit programming and return to
the standard display.
NOTES:
— Energy prices supplied by your
energy utility may influence the times
you choose to schedule periods for
maximum energy efficiency.
— Each period can occur at any pro-
grammed time; for example, you can
set morning at 9 PM. When you
program the thermostat, be careful to
use the correct time to avoid confusion.
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MORN is the time you get up. Generally,
you want the house at a comfortable
temperature when you wake up. Set the
MORN time earlier than your alarm clock
so your home has time to reach the
desired temperature.
DAY is the time you leave for work or
school. Generally, once you leave your
home, you want the temperature higher
or lower (depending on the season) so
that you can save energy while you are
away.
EVE is the time you return from work or
school. Again, you want your home at a
comfortable temperature when you
return and go about the normal activities
of your evening. Set the EVE time earlier
than the time you arrive so your home
has time to reach the desired temperature before you get there.
NIGHT is the time you usually go to sleep.
While you are sleeping, you can save
energy by setting the thermostat to
control the temperature higher or lower
(depending on the season).
If you choose not to program the thermostat, it
controls the temperature using the following
defaults:
• The cooling temperature remains set to a
constant 78°F.
• At 6:00 AM every day, the thermostat sets
the heating temperature to 68°F.
• At 10:00 PM every night, the thermostat
reduces the heating temperature to 60°F
You do not need to enter a time and tempera-
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ture program for every period if your schedule
does not require it; for example, if your home is
occupied during the day on weekdays, you can
program only the MORN and NIGHT times.
NOTE: You cannot set temperatures higher
than 88°F or lower than 45°F.
As the cost of energy increases, the thermostat
uses your pre-programmed choices to reduce
usage by temporarily changing the setpoint;
that is, it changes the temperature setting—
increasing it for cooling, decreasing it for
heating—or turns off the water heater and/or
appliance.
Price Response
You can also program the thermostat based on
the current price of electricity. Use Tables 7 and
8 to plan the Price Response program.
Price Response programming allows the
thermostat to respond to changes in the RSVP
prices. Your energy utility tells the thermostat
what the current RSVP price is for electricity.
These prices are: Low (least expensive),
Medium, High, and Critical (most expensive).
NOTE: You can enter the number of degrees
you want the thermostat to change
the temperature (offsets) for each
price except Low. The Low price
always uses whatever schedule
programming exists and it is the basis
for the offsets. The one exception is
the water heater, which is always
enabled during the low price.
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CAUTION
Equipment Damage Hazard.
Use of sharp fingernails or pencil
points can damage the keypad
beyond repair.
Use the ball of your finger or a soft
pencil eraser when pressing the keys.
IMPORTANT
When programming for the appliance,
make certain that you consider
potential safety issues; for example:
with a pool pump during winter
freezing weather, you will have to
operate the pool pump as you have
always done to prevent pump and
pipe freezing.
NOTE: Before programming the thermostat,
remove the clear protective plastic
display overlay.
Entering Schedule Programming
Refer to your Personal Programming Charts
and proceed as follows:
IMPORTANT
The thermostat registers all programming inputs immediately and maintains them until manually changed.
Low batteries or power outages do
not delete thermostat programming.
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NOTE: When setting a program time or
temperature, the instructions direct
you to “Press and hold until the
display shows the desired time (or
temperature).” This changes the
setting quickly in the selected
direction. Use this method when the
change is large (for example, two
hours, or ten degrees). Once the
setting is close, press and release the
key to move the setting one step at a
time.
Inputting Basic Program
The most efficient way to program the thermostat is to first input a basic program for the
entire week. Then, you can make changes to
specific days to fit your needs.
IMPORTANT
Because this procedure can affect up
to seven days of programming, be
careful when making changes with
multiple days selected.
NOTES:
— If you delete all programming with the
CLEAR key, the thermostat uses the
default program.
— PGM is an indication that you are in
programming mode.
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Step 1: Setting Basic Cooling Times and Temperatures.
3
3
3
First program the
MORN time and
Device
Press and release until the
display shows PGM COOL.
temperature, if
desired, for the
entire week.
Day of
Week
Press and release until the
display shows MON TUE
WED THU FRI SAT SUN.
Time
Period
Press and release until the
display shows MORN.
AM
M1540
AM
M1540
AM
M1540
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4
Ahead
5
Back
Press and hold until the
display shows the desired
time.
AM
M1540
Warmer
Cooler
Press and hold until the
display shows the desired
temperature.
21
AM
M1540
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Program the
6
7
8
DAY time and
temperature, if
desired, for the
entire week.
Time
Period
Ahead
Back
Press and release until the
display shows DAY.
Press and hold until the
display shows the desired
time.
M1540
AM
M1540
Warmer
Cooler
Press and hold until the
display shows the desired
temperature.
22
AM
M1540
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Program the EVE
9
0
1
time and
temperature, if
desired, for the
entire week.
Time
Period
Ahead
Back
Warmer
Cooler
Press and release until the
display shows EVE.
Press and hold until the
display shows the desired
time.
Press and hold until the
display shows the desired
temperature.
M1540
PM
M1541
PM
M1541
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Program the
2
3
4
NIGHT time and
temperature, if
desired, for the
entire week.
Time
Period
Ahead
Back
Warmer
Cooler
Press and release until the
display shows NIGHT.
Press and hold until the
display shows the desired
time.
Press and hold until the
display shows the desired
temperature.
M1541
PM
M1541
PM
M1541
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Step 2: Setting Basic Heating Times and Temperatures.
5
6
5
First program the
MORN time and
temperature, if
desired, for the
entire week.
Device
Day of
Week
Time
Period
Press and release until the
display shows PGM HEAT.
Press and release until the
display shows MON TUE
WED THU FRI SAT SUN.
Press and release until the
display shows MORN.
25
M1541
M1541
AM
M1541
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Ahead
7
8
Back
Press and hold until the
display shows the desired
time.
AM
M1541
Warmer
Cooler
Press and hold until the
display shows the desired
temperature.
26
AM
M1541
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Program the
9
0
1
DAY time and
temperature, if
desired, for the
entire week.
Time
Period
Ahead
Back
Press and release until the
display shows DAY.
Press and hold until the
display shows the desired
time.
M1541
AM
M1542
Warmer
Cooler
Press and hold until the
display shows the desired
temperature.
27
AM
M1542
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Program the EVE
2
3
4
time and
temperature, if
desired, for the
entire week.
Time
Period
Ahead
Back
Warmer
Cooler
Press and release until the
display shows EVE.
Press and hold until the
display shows the desired
time.
Press and hold until the
display shows the desired
temperature.
M1542
PM
M1542
PM
M1542
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Program the
5
6
5
NIGHT time and
temperature, if
desired, for the
entire week.
Time
Period
Ahead
Back
Warmer
Cooler
Press and release until the
display shows NIGHT.
Press and hold until the
display shows the desired
time.
Press and hold until the
display shows the desired
temperature.
PM
M1542
PM
M1542
PM
M1542
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Step 3: Setting Basic Water Times and On/Off Settings.
7
8
7
First program the
MORN time and
on/off setting, if
Device
Press and release until the
display shows PGM
WATER.
desired, for the
entire week.
Day of
Week
Press and release until the
display shows MON TUE
WED THU FRI SAT SUN.
PM
M1542
PM
M1542
Time
Period
Press and release until the
display shows MORN.
30
AM
M1542
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9
9
Ahead
Back
Press and hold until the
display shows the desired
time.
AM
M1542
Water
On-Off-Clr
Press and release until the
display shows the desired
on/off setting.
31
AM
M1542
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Program the
0
1
1
DAY time and
on/off setting, if
desired, for the
entire week.
Time
Period
Ahead
Back
Press and release until the
display shows DAY.
Press and hold until the
display shows the desired
time.
M1543
AM
M1543
Water
On-Off-Clr
Press and hold until the
display shows the desired
on/off setting.
32
AM
M1543
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2
3
3
Program the EVE
time and on/off
setting, if
desired, for the
entire week.
Time
Period
Ahead
Back
Press and release until the
display shows EVE.
Press and hold until the
display shows the desired
time.
M1543
PM
M1543
Water
On-Off-Clr
Press and hold until the
display shows the desired
on/off setting.
33
PM
M1543
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4
Program the
4
4
NIGHT time and
on/off setting, if
desired, for the
entire week.
Time
Period
Ahead
Back
Press and release until the
display shows NIGHT.
Press and hold until the
display shows the desired
time.
PM
M1543
PM
M1543
Water
On-Off-Clr
Press and hold until the
display shows the desired
on/off setting.
34
PM
M1543
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Step 4: Setting Basic Appliance Times and On/Off Settings.
3
3
6
First program the
MORN time and
Device
Press and release until the
display shows PGM APPL.
on/off setting, if
desired, for the
entire week.
Day of
Week
Press and release until the
display shows MON TUE
WED THU FRI SAT SUN.
Time
Period
Press and release until the
display shows MORN.
PM
M1544
PM
M1544
AM
M1543
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7
7
Ahead
Back
Press and hold until the
display shows the desired
time.
AM
M1543
Appl
On-Off-Clr
Press and hold until the
display shows the desired
on/off setting.
36
AM
M1543
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8
9
9
Program the
DAY time and
on/off setting, if
desired, for the
entire week.
Time
Period
Ahead
Back
Press and release until the
display shows DAY.
Press and hold until the
display shows the desired
time.
M1543
AM
M1543
Appl
On-Off-Clr
Press and hold until the
display shows the desired
on/off setting.
37
AM
M1543
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Program the EVE
0
1
1
time and on/off
setting, if
desired, for the
entire week.
Time
Period
Ahead
Back
Press and release until the
display shows EVE.
Press and hold until the
display shows the desired
time.
M1544
PM
M1544
Appl
On-Off-Clr
Press and hold until the
display shows the desired
on/off setting.
38
PM
M1544
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2
3
3
Program the
NIGHT time and
on/off setting, if
desired, for the
entire week.
Time
Period
Ahead
Back
Press and release until the
display shows NIGHT.
Press and hold until the
display shows the desired
time.
M1544
PM
M1544
Appl
On-Off-Clr
Press and hold until the
display shows the desired
on/off setting.
Changing Parts of the Program
After you input the basic program for the entire
week, make changes to specific days to tailor
the program to fit your needs.
IMPORTANT
39
PM
M1544
Because this procedure can affect up
to seven days of programming, be
careful when making changes with
multiple days selected.
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Step 5: Changing Individual Cooling Times and Temperatures.
4
5
4
The following example illustrates modifying the Sunday Morning Cooling program.
First, select
COOL, and the
desired day and
period for the
change.
Device
Day of
Week
Time
Period
Press and release until the
display shows PGM COOL.
Press and release until the
display shows the desired
day(s).
Press and release until the
display shows the desired
period.
40
PM
M1541
PM
M1544
AM
M1544
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6
8
7
Adjust the time
that the period
begins.
Ahead
Back
Press and hold until the
display shows the desired
time.
AM
M1544
OR
Delete the
programming
from the period
for the days
shown on the
display.
Warmer
Cooler
Clear
Press and hold until the
display shows the desired
temperature.
Press and release.
41
AM
M1544
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Step 6: Changing Individual Heating Times and Temperatures.
6
9
0
The following example illustrates modifying the Saturday Day Heating program.
First, select
HEAT, and the
desired day and
period for the
change.
Device
Day of
Week
Time
Period
Press and release until the
display shows PGM HEAT.
Press and release until the
display shows the desired
day(s).
Press and release until the
display shows the desired
period.
42
PM
M1542
AM
M1544
AM
M1545
69-1611
1
2
3
Adjust the time
that the period
begins.
OR
Ahead
Back
Warmer
Cooler
Press and hold until the
display shows the desired
time.
M1545
Press and hold until the
display shows the desired
temperature.
M1545
Delete the
programming
from the period
for the days
shown on the
display.
Clear
Press and release.
43
M1545
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Step 7: Changing Individual Water Times and On/Off Settings.
1
4
5
The following example illustrates modifying the Saturday Evening Water program.
First, select
WATER, and the
desired day and
period for the
change.
Device
Day of
Week
Time
Period
Press and release until the
display shows PGM
WATER.
Press and release until the
display shows the desired
day(s).
Press and release until the
display shows the desired
period.
44
AM
M1543
AM
M1545
PM
M1545
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6
8
7
Adjust the time
that the period
begins.
Ahead
Back
Press and hold until the
display shows the desired
time.
PM
M1545
OR
Delete the
programming
from the period
for the days
shown on the
display.
Water
On-Off-Clr
Clear
Press and release until the
display shows the desired
on/off setting.
Press and release. The
WATER indication shows
neither on nor off.
45
PM
M1545
M1545
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Step 8: Changing Individual Appliance Times and On/Off Settings.
6
9
0
The following example illustrates modifying the Saturday Day Appliance program.
First, select
APPL, and the
Device
Press and release until the
display shows PGM APPL.
desired day and
period for the
change.
Day of
Week
Press and release until the
display shows the desired
day(s).
Time
Period
Press and release until the
display shows the desired
period.
AM
M1543
AM
M1545
AM
M1546
46
69-1611
1
3
2
Adjust the time
that the period
begins:
Ahead
Back
Press and hold until the
display shows the desired
time.
AM
M1548
OR
Delete the
programming
from the period
for the days
shown on the
display:
Appl
On-Off-Clr
Clear
Press and release until the
display shows the desired
on/off setting.
Press and release. APPL
indication shows neither on
nor off.
47
AM
M1548
M1548
69-1611
NOTE: If you set the period start times so the
next period begins before the current
period then the Heat/Cool system
uses periods out of expected order;
for example, NIGHT can occur before
EVE.
Programming Price Response
Overview
Price response allows the thermostat to
respond to changes in the RSVP prices. Your
energy utility tells the thermostat what the
current RSVP price is for electricity. These
prices are: Low (least expensive), Medium,
High, and Critical (most expensive). As the cost
of energy increases, the thermostat reduces
usage by temporarily changing the setpoint;
that is, it changes the temperature setting—
increasing it for cooling, decreasing it for
heating—or turns off the water heater and/or
appliance. If you do not enter any price offsets,
the thermostat uses the default settings (see
Table 2).
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Table 2. Price Response Program Defaults.
Setpoint Offset (°°°°F or °°°°C)
Price RateHeatCoolHot WaterAppl
1
Low
00onon
Medium-1+1onon
High-2+2onon
Critical-5+5offoff
1
The Low Price Response settings are fixed and cannot be changed.
Heat offsets are always negative (less heat to
save energy). Cool offsets are always positive
(less cooling to save energy). Hot Water and
Appliance settings are simply on or off.
The offset entered is the number of degrees
you are willing to allow the heating or cooling
temperature to change from what you programmed for normal operation to save money
at each price. Think of the Price Response
programming as what you are willing to give up
to save money when RSVP prices increase.
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With an appliance, the APPL indicator lights
with either an ON or an OFF indication. With
APPL set to OFF at a particular price, when the
price reaches that level, the appliance load
turns off, ignoring the program schedule. The
water indicator works identically to the appliance indicator with one exception: when the
RSVP price is low the water indicator is always
on.
NOTE: Price Response programming does
not affect temperature, water, or
appliance holds.
For example, if you want your home heated to
72° during low rate, but are willing to allow the
temperature down as low as 70° during high
rate, your heat offset for rate H (high) is -2
(72° -2° = 70°). If you do not enter an offset,
the offset remains as shown in Table 2.
If you program an incorrect offset, press and
release the Clear key. This changes the offset
on the display to zero. The Clear key works for
all programmable rates.
Entering Price Response Programming
Price Response programming is very similar to
the other programming. One primary difference
is that you can program the temperature offsets
and water/appliance setting changes from the
same display. The same water and appliance
setting changes apply for both heating and
cooling. Therefore, they need only be set once.
Program them from either the heating or the
cooling offset display. The following programming instructions—both heating and cooling—
detail this process.
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Step 1: Setting Price Offsets for Cooling.
5
7
7
First, program
the Medium
Device
Press and release until the
display shows PGM COOL.
offset.
Price
Response
Press and release the key
to show OF (indicating
temperature offset).
Press and release until the
Warmer
display shows the desired
(positive) temperature
Cooler
offset.
AM
M1548
M1548
M1548
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7
7
8
Next, program
the High offset.
Water
On-Off-Clr
Appl
On-Off-Clr
Price
Response
Press and release until the
display shows the desired
Water on/off setting for the
Medium offset.
Press and release until the
display shows the desired
Appliance on/off setting for
the Medium offset.
Press and release the key
to show OF (indicating
temperature offset).
M1548
M1548
M1548
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9
9
0
Warmer
Cooler
Press and release until the
display shows the desired
(positive) temperature
offset.
M1548
Water
On-Off-Clr
Appl
On-Off-Clr
Press and release until the
display shows the desired
Water on/off setting for the
High offset.
Press and release until the
display shows the desired
Appliance on/off setting for
the High offset.
53
M1548
M1549
69-1611
1
3
3
Then, program
3
the Critical
offset.
Price
Response
Warmer
Cooler
Press and release the key
to show OF (indicating
temperature offset).
Press and release until the
display shows the desired
(positive) temperature
offset.
M1549
M1549
Water
On-Off-Clr
Appl
On-Off-Clr
Press and release until the
display shows the desired
Water on/off setting for the
Critical offset.
Press and release until the
display shows the desired
Appliance on/off setting for
the Critical offset.
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M1549
M1549
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Step 2: Setting Price Offsets for Heating.
4
7
7
First, program
the Medium
Device
Press and release until the
display shows PGM HEAT.
offset.
Price
Response
Press and release until the
display shows OF
(indicating temperature
offset).
Press and release until the
Warmer
display shows the desired
(negative) temperature
Cooler
offset.
AM
M1549
M1549
M1549
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7
7
Next, program
8
9
the High offset.
Water
On-Off-Clr
Appl
On-Off-Clr
Price
Response
Warmer
Cooler
Press and release until the
display shows the desired
Water on/off setting for the
Medium offset.
Press and release until the
display shows the desired
Appliance on/off setting for
the Medium offset.
Press and release the key
to show OF (indicating
temperature offset).
Press and release until the
display shows the desired
(negative) temperature
offset.
M1549
M1549
M1549
M1549
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1
1
Then, program
2
3
the Critical
offset.
Water
On-Off-Clr
Appl
On-Off-Clr
Price
Response
Warmer
Cooler
Press and release until the
display shows the desired
Water on/off setting for the
High offset.
Press and release until the
display shows the desired
Appliance on/off setting for
the High offset.
Press and release the key
to show OF (indicating
temperature offset).
Press and release until the
display shows the desired
(negative) temperature
offset.
M1550
M1550
M1550
M1550
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3
3
After you have
4
finished
programming
offset values,
return to
standard display.
Water
On-Off-Clr
Appl
On-Off-Clr
Present
Setting
Press and release until the
display shows the desired
Water on/off setting for the
Critical offset.
Press and release until the
display shows the desired
Appliance on/off setting for
the Critical offset.
Press and release to return
to the standard display.
M1550
M1550
M1548
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Controlling Heat/Cool System
4
With a conventional heating/cooling system, you can set the system to: HEAT, COOL or OFF. With
a heat pump system, you can set the system to: COOL, HEAT, EM HEAT, or OFF.
Changing the System Setting
Manually change
the system
Heat
Cool
setting.
HEAT: The thermostat controls your heating system according to the schedule you programmed.
Heat pump models display AUX and the indicator light flashes denoting auxilliary heat
element operation, see Table 1.
EM HEAT: The emergency heater element of the heat pump is enabled.
COOL: The thermostat controls your cooling system according to the schedule you pro-
grammed.
No status displayed: Both the heating and cooling systems are off.
Press and release until the
display shows the desired
system status.
AM
M1550
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Controlling Fan
There are two fan settings: AUTO and ON.
To select the fan setting, press the Fan key. Each time you press the key, the fan status changes to
the next setting.
With FAN displayed, the fan is on continuously. Use this setting for improved air circulation or
during special occasions of short duration.
With nothing displayed, the fan is in AUTO mode (it comes on with the heating or cooling equipment, as needed). AUTO is the typical setting. If you have a two-speed fan, it usually runs on high
with cooling and on low with heating.
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Troubleshooting
IF…THEN…
Display does not come on. • There is no power being supplied to the thermostat. Check fuse
Temperature display does
not go lower than 45°F or
higher than 88°F during
programming.
Temperature change
occurs at the wrong time.
or circuit breaker.
• Check the furnace air filter. A dirty filter will choke the airflow
causing safety shutdown; replace or clean, if necessary.
• You have reached the thermostat setting limit. The setting
range is 45°F to 88°F.
• Check programming for the period in question. Be sure the
time—including AM/PM indication—is correct. Reprogram if
necessary.
• Keep in mind that it takes time for the system to recover.
Refer to the Recovery from Setback section for details.
(continued)
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Troubleshooting Guide (continued)
IF…THEN…
Heating unit does not
come on.
• Check that the thermostat is set to heat. If it is not, press the
Heat/Cool key until the display indicates HEAT.
• If the temperature setting is higher than current temperature,
and display indicates HEAT, contact your energy utility.
• Heat pump thermostats have a built-in five minute time delay
for heating. After changing the setting, the thermostat delays
before starting the heating to prevent equipment damage.
Cooling does not come on.
• Check that the thermostat is set to cool. If it is not, press the
Heat/Cool key until the display indicates COOL.
• Check the fuse or circuit breaker and replace or reset, if
necessary.
• The thermostat has a built-in five minute time delay for cooling.
After changing the setting, the thermostat delays before
starting the cooling to prevent equipment damage.
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IF…THEN…
Cooling does not come on
(continued).
• If temperature setting is lower than current temperature and
the display indicates COOL, set the system control OFF for
ten minutes. After ten minutes, return the system control to
cool. If the cooling comes on, the compressor may have
reached a safety limit and shut down. If the air conditioner
does not come on after ten minutes and the display shows
COOL, contact your energy utility.
The house is too warm or
too cool.
• Press the PresentSetting key to check the temperature
setting.
• If desired, change the temperature setting (see Holds section).
• The RSVP Rate may be adjusting the setting beyond what you
desire. Check your offset temperatures; you may need to
change them to provide a more comfortable temperature.
System ON indicated but
no heat is coming from the
vents.
• Allow time for the furnace or heat pump to heat up and the fan
to come on before checking for heat at the vent.
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Troubleshooting Guide (continued)
IF…THEN…
Thermostat current setting
does not match the display
temperature.
Incorrect room
• Be aware that it is normal for the current setting and display
temperature to differ on occasion.
• During recovery from setback or setup, setting and display
temperatures may differ during the recovery period.
• The thermostat is factory-calibrated and cannot be adjusted.
temperature is showing on
thermostat display.
Thermostat is flashing
CALL followed by a phone
• Your thermostat has lost communication with your energy
utility. Call the number displayed on the thermostat.
number.
Hot water and appliance
devices are not functioning
per schedule.
Temperature displayed as
“- -”.
• Verify programming for loads and Time-of-Use rate.
• Communications are not properly functioning. Contact your
energy utility.
• Temperature sensor has failed.
• Temperature is out of thermostat operating range.
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IF…THEN…
Clock gives erroneous
reading.
• Check to see if display shows low battery, if so replace
batteries.
• Gulf Power sets the clock and it cannot be adjusted by the
customer. If necessary, contact your energy utility.
Clock occasionally
changes more than one
minute at a time.
Thermostat displays:
“bUSY”.
• Your energy utility periodically resets the clock to the correct
time. This can change the time more than one minute (see
Replacing the Batteries section).
• If condition persists for more than one minute, the thermostat
cannot establish the communication link; contact your energy
utility.
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Personal Programming Charts
Table 3. Cooling Schedule (For Summer Use).
MorningDayEveningNight
CoolTimeSettingTimeSettingTimeSettingTimeSetting
Mon
Tue
Wed
Thur
Fri
Sat
Sun
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Table 4. Heating Schedule (For Winter Use).
MorningDayEveningNight
HeatTimeSettingTimeSettingTimeSettingTimeSetting
Mon
Tue
Wed
Thur
Fri
Sat
Sun
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Table 5. Water Schedule (For Hot Water Control).
MorningDayEveningNight
WaterTimeOn/OffTimeOn/OffTimeOn/OffTimeOn/Off
Mon
Tue
Wed
Thur
Fri
Sat
Sun
NOTE: The On setting refers to enabling the operating mode; you cannot program a water heater
“on”.
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Table 6. Appliance Schedule (For One Appliance Control).
MorningDayEveningNight
ApplTimeOn/OffTimeOn/OffTimeOn/OffTimeOn/Off
Mon
Tue
Wed
Thur
Fri
Sat
Sun
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Table 7. Offset Values for RSVP Rate.
Offsets (+) for Cooling (setpoint increase)Offsets (-) for Heating (setpoint decrease)
Price LPrice MPrice HPrice CPrice LPrice MPrice HPrice C
N/AN/A
Table 8. Water and Appliance Offsets for RSVP Rate.
On/Off setting for WaterOn/Off setting for Appliance
Price LPrice MPrice HPrice CPrice LPrice MPrice HPrice C
N/AN/A
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Warranty
Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a
period of one (1) year from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or malfunctions,
Honeywell shall repair or replace it (at Honeywell’s option) within a reasonable period of time.
If the product is defective,
(i) return it, with a bill of sale or other dated proof of purchase, to the retailer from which you purchased it, or
(ii) package it carefully, along with proof of purchase (including date of purchase) and a short description of the malfunction, and mail it,
postage prepaid, to the following address:
Honeywell Return Goods
1885 Douglas Drive
Golden Valley, MN 55422
This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Honeywell that the defect or malfunction
was caused by damage which occurred while the product was in the possession of a consumer.
Honeywell’s sole responsibility shall be to repair or replace the product within the terms stated above. HONEYWELL SHALL NOT BE LIABLE FOR
ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR
INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states
do not allow the exclusion or limitation of incidental or consequential damages, so this limitation may not apply to you.
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED
WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED
TO THE ONE YEAR DURATION OF THIS WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above
limitation may not apply to you.
This warranty gives you specific legal rights, and you may have other rights which vary from state to state.
If you have any questions concerning this warranty, please write to Home and Building Control Customer Relations, Honeywell Inc., 1985 Douglas
Drive North, Minneapolis, Minnesota 55422. In Canada, Honeywell Limited/Honeywell Limitée, Dynamic Drive, Scarborough, Ontario, M1V 4Z9.
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Automation and Control Solutions
Honeywell
1985 Douglas Drive North
Golden Valley MN 55422