Honeywell T7516A User manual

169-1611
Weekday/Weekend 7-dayProgrammable
Heat and/or Cool Conventional
and Heat Pump
USER’S GUIDE
T7516A,B,C
Energy Management System
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269-1611
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 Residential
Service Variable Price (RSVP) Rate.
Residential Service Variable Price (RSVP) Rate. The T7516A,B,C Energy Management Thermo-
stat 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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Fig. 1. RSVP Rate indications.
M12661
A
AM
INDICATOR FOR RSVP CURRENT PRICE

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Table of Contents
Getting to Know Your Thermostat ............................................................................................ 6
Standard Display ..................................................................................................................... 6
Keypad .................................................................................................................................... 8
Battery Compartment .............................................................................................................. 8
Replacing Thermostat Batteries ......................................................................................... 8
Indicator Light .......................................................................................................................... 10
Programming Overview ........................................................................................................... 10
User Operations ...................................................................................................................... 10
Present Setting ................................................................................................................... 10
Overrides ............................................................................................................................ 12
Hold ............................................................................................................................... 12
Temporary ...................................................................................................................... 13
Recovery From Setback ..................................................................................................... 14
Programming Your Thermostat ................................................................................................ 15
Price Response ....................................................................................................................... 17
Entering Schedule Programming ............................................................................................ 18
Inputting Basic Program ..................................................................................................... 19
Changing Parts of the Program .......................................................................................... 39

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Programming Price Response .................................................................................................. 48
Overview ................................................................................................................................. 48
Entering Price Response Programming .................................................................................. 50
Controlling Heat/Cool System .................................................................................................. 59
Changing the System Setting .................................................................................................. 59
Controlling Fan........................................................................................................................... 60
Troubleshooting ......................................................................................................................... 61
Personal Programming Charts ................................................................................................. 66
Customer Assistance ................................................................................................................ 71
Warranty ...................................................................................................................................... 71

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Getting to Know Your Thermostat
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.
Fig. 2. T7516 Energy Management
Thermostat.
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 automati-
cally sequences several displays (see Fig. 3).
NOTE: The colon in the time display blinks,
except when in the programming
mode.
M15533
Day of
Week
Ahead
Device
Program Time Temperature
Back
Water
On-Off-Clr
Fan
Auto-On
Present
Setting
Time
Period Hold
Heat
Cool
Price
Response Clear
Appl
On-Off-Clr
Warmer
Cooler
Scientific
Atlanta
TM
AM
PM
INDICATOR LIGHT

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Fig. 3. Display sequence.
M20426
AM
STANDARD
HOLD
TEMPORARY
A SERIES OF SCREENS THAT PROVID
E
THE PHONE NUMBER TO CALL TO
CONTACT YOUR ENERGY UTILITY.
1
2
1
2
THIS SCREEN IS ALWAYS PART OF THE DISPLAY SEQUENCE.
ONLY APPEARS: WHEN YOUR ENERGY UTILITY SIGNALS IT TO DO SO; DURING A LOSS OF COMMUNICATION,
OR A THERMOSTAT FAULT.

BATTERY LOW INDICATION







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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 main-
tains 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 interrup-
tion.
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. Fig. 4. Battery Door Removal.
M1719C
REMOVING
BATTERY
DOOR

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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,
or is scheduled (see Table 1).
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.
Table 1. Critical RSVP Price Indications.
Auxiliary (or
Emergency) Heat Indicator Light Critical RSVP Price
Off Flashes three times, then pauses. In effect.
Flashes once, then pauses. Scheduled to start within 30 min.
On
1
Flashes twice, then remains on. In effect.
Periodically turns off once. Scheduled to start within 30 min.
1Heat 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
An override is a setting used to manually
change the setting without affecting the
program memory.
From the standard display, press the Clear key
to clear any temperature override in effect.
M1550
8
Water
On-Off-Clr
M1547
0
Appl
On-Off-Clr
M1547
1
To clear Water or Appliance overrides, press
the Water or Appl key until the display shows
neither On nor Off underneath Water or Appl.
or
M1550
5
Hold
A hold is a setting used to override the program
for an extended period of time. A hold main-
tains a setting until manually changed.
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 perma-
nently held (with Warmer, Cooler, Water, and
Appl keys) also brings up the hold display.
Press Warmer or Cooler keys with hold
displayed to increase or decrease the setpoint.

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Press Water or Appl keys to toggle the hold
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 thermo-
stat enters the next scheduled period.
The temporary display indicates the items set
on temporary.
M1550
6
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
temporary display and toggle the water or
appliance state.
M1550
9
NOTES:
—Atemporary 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.
—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.
—Atemporary 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 confu-
sion.

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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 tempera-
ture 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.
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).
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.
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 program-
ming inputs immediately and main-
tains 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 thermo-
stat 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.
M1540
3
AM
M1540
3
AM
M1540
3
AM
First program the
MORN time and
temperature, if
desired, for the
entire week.
Press and release until the
display shows PGM COOL.
Press and release until the
display shows MON TUE
WED THU FRI SAT SUN.
Press and release until the
display shows MORN.
Device
Day of
Week
Time
Period