Honeywell T7200 User manual

Set/Recall Occupied/
Set/Recall Occupied/
Unoccupied Times
Unoccupied Times
Liquid Crystal Display
Including Programming Prompts
and Status Indicators Select Desired Constant Data Entry Keys
Display
Set Correct Set/Recall
Time of Day/ Occupied/
Day of Week Unoccupied Temperatures
Activate/Deactivate
Convenience Overrides’

Congratulations!
You are the owner of one of the finest thermostats
ever produced by Honeywell. using outdoor air for “free” cooling whenever
possible.
The unique features of the T7200/T7300 Program-
mable Commercial Thermostats satisfy the special
requirements of commercial single zone air condi-
tioning systems, and provide convenience and tem-
perature control accuracy that is unparalleled in the
Industry. These thermostats also include energy
saving features which allow them to minimize the
energy needed to maintain comfort conditions by
A thprough review of this Owner’s Manual will help
you Identify those features which will maximize
comfort convenience and savings in your applica-
Terms and words that may not be familiar to you
are explained in the glossary at the end of this
manual.
I
5

STARTUP
When power is first applied, an internal startup
program begins. This takes place after any total
loss of power (supply voltage and backup battery)
and lasts 2 seconds.
At this time, default temperature setpoint values are
used for temperature control. These are: heating
68 F [20 C] and cooling 78 F [26 C]. Following the
startup period, you can enter new setpoints which
will be used in place of these default values.
Should a power failure occur after your time and
temperature schedule entries are made, the backup
battery will maintain your schedule up to 60 hours.
As long as either system or battery backup power is
present, your program is available and will be used
for temperature control.
INDICATORS
No Program in Thermostat Memory
A display of 4 dashes (----) indicates that there is no
program stored in the thermostat’s memory. This
will occur when power is first applied to the
thermostat, or when power was lost to the thermo-
stat while battery backup was either weak or not
installed.
Loss of External Power
A blank display indicates loss of external power.
The backup battery will maintain your time and
temperature schedule during power loss. The
keyboard and display are inoperative while the
thermostat is operating on battery power.
BATT Displayed on LCD
BATT displayed on LCD indicates backup battery is
weak or not installed. Refer to section titled
BATTERY ACCESS AND REPLACEMENT for
instructions.
OPERATION
SELECTING THE DESIRED OPERATING DISPLAY
The DISPLAY key allows you to select a continuous
display of time or temperature. Each press of the
DISPLAY key will toggle the display between time
or temperature.
Temperature Display of --’
A display of 2 dashes and a degree symbol (--“),
indicates a temperature sensor failure. See section
titled TROUBLESHOOTING GUIDE for instructions.
MINIMUM OPERATION TIMES
The T7200 and T7300 thermostats incorporate
minimum operation times of 2 to 4 minutes. These
times are in effect after startup. anytime power to
the thermostat is removed and then reapplied, or
after heating or cooling goes either on or off. These
time delays will protect and extend the life of your
heating and cooling equipment.
Due to these times, the thermostats will not react
instantaneously to setpolnt changes.

PROGRAM SCHEDULE
Each day of the week can be individually pro-
grammed with 2 Occupied and 2 Unoccupied
periods to make maximum use of schedule
variations.
Occupied operation is based on Occupied Heat and
Occupied Cool setpoints. Unoccupied operation is
based on Unoccupied Heat and Unoccupied Cool
setpoints.
Intelligent Recovery’“, based on a setpoint ramping
feature, is used when switching from Unoccupied
operation to Occupied operation. This selects the
optimum time to begin building warmup or cool-
down, and can vary depending on space temperature
deviation from setpoint. The end result of Intelligent
Recovery’” is the correct temperature at the occu-
pancy time. This increases energy savings while also
providing increased user convenience.
UNOCCUPIED
COOL SETPOINT
OCCUPIED
COOL SETPOINT
OCCUPIED
-
HEAT SETPOINT
UNOCCUPIED
HEAT SETPOINT
I
UNOCCUPIED
PERIOD
, INTELLIGENT 1
OCCUPIED , UNOCCUPIED
RECOVERY’” PERIOD
I
PERIOD
9
-

SECURITY
The T7200/T7300 thermostats provide program
security capability which, if used, can lock out
programming. This prevents tampering with thermo-
stat setpoints and schedules. If the lock out function
is not used, the thermostat can be programmed
normally as described in this manual. When the
thermostat is locked out, only limited keyboard
functions are available. The three overrides, setting
clock times and program reviews can be performed
when the keyboard is locked out.
OVERRIDING THE THERMOSTAT’S
PROGRAM
The security feature of this thermostat does not
lock out the use of the 3 overrides.
Two of the overrides (3 Hour Occupied and Setpoint
Adjust) are timed for3 hours, at which time the
thermostat returns to the normal program. The last
override (Continuous Unoccupied) is not timed.
Once this override is in operation, it cannot be
exited unless the CONT UNOC key is pressed or
another override is placed into operation.
None of these 3 overrides may be used at the same
time, and the last override placed into operation will
be in control.

KEY USED FOR THE 3 HOUR OCCUPIED OVERRIDE
3 HOUR OCCUPIED
This override is useful in situations where people
will have to be in a building when it is normally va-
cant such as after normal working hours or on week-
ends or holidays. Press the 3 HOUR OCCUPIED
key to place the thermostat into the Occupied mode,
controlling the space temperature to the occupied
setpoints for 3 hours. The indicator on the left side
of the display will point to 3 HR OCCUPIED while
this override is in effect.
3 HOUR OCCUPIED
KEY PRESSED
5OCCUPIED-- / 1
--
5
E
if
I
% UNOCCUPIED-
II
12 2 4 66
10 12 2466
10 12 2
4 6 6 10 12 2 46 8 IO 12
FRIDAY
I
SATURDAY
-A.M.--P.M.-C-A.M.--P.M.-
TIME OF DAY
13

U
KEYS USED FOR THE SETPOINT ADJUST OVERRIDE
SETPOINT ADJUST
This override is useful in situations where the occupied
space feels too cool or warm for the occupants and a
temporary change of setpoint would make the temperature
more comfortable. It can be called from either the Occu-
pied or Unoccupied modes and functions in this way:
- Press the 3 HOUR OCCUPIED key. If in Unoccupied.
the thermostat will go to the Occupied mode, controlling
the space temperature to the Occupied setpoints for 3
hours. If in Occupied mode, no change of setpoints will
occur. However, this will ensure 3 hours of Occupied set-
point control regardless of any Unoccupied Start Times
that may be programmed. The indicator on the left side of
the display will point to 3 HR OCCUPIED while this over-
ride is in effect.
THEN:
-
Press the the +key. This will adjust the setpoint up by
a preprogrammed “Amount of Setpoint Adjust”. As an
example, Occupied Heat is set for 70 F and “Amount of
Setpoint Adjust” is set for 5 F. After the +key is pressed,
the Occupied Heat setpoint will be 70 + 5 or 75 F. The
thermostat will then control the space temperature to 75 F
and the indicator on the left side of the display will
continue to point to 3 HR OCCUPIED during the
remainder of the 3 hours of adjusted setpoint.
OR
-
Press the - key. This will adjust the setpoint down by a
preprogrammed “Amount of Setpoint Adjust”. As an
example, Occupied Heat is set for 70 F and “Amount of
Setpoint Adjust” is set for 5 F. After the
- key is pressed,
the Occupied Heat setpoint will be 70 5 or 65 F. The
thermostat will then control the space temperature to 65 F
and the indicator on the left side of the display will
continue to point to 3 HR OCCUPIED during the
remainder of the 3 hours of adjusted setpoint.
NOTE:
Refer to the section titled TO SET THE AMOUNT OF SET-
POINT ADJUST for instructions on how to vary the
setpoint
adjust.
15

KEY USED FOR CONTINUOUS UNOCCUPIED OVERRIDE
CONTINUOUS UNOCCUPIED
This override is useful in situations where the build-
ing will be vacant for an extended period of time
(such as temporary closings or long holidays).
Pressing the CONT UNOC key will place the T7300
into the unoccupied period for an indefinite time.
When in this mode, the thermostat will control to
the unoccupied setpoints with the indicator pointing
to CONT UNOC. A second press of the CONT
UNOC key will cancel this override mode and return
the T7300 to normal operation.
CONT “NOC
I KEY PRESSED
5OCCUPIED
-
5
E
fi UNOCCUPIED -
;2 4 8 12 4s12
4 8 12 4
a 12
I-
TUESDAY WEDNESDAY
A.M.-C-PM.-
-A.M.--P.M.-
TIME OF DAY 17

Convenient keyboard layout provides effortless
program entry. your avenue to maximum energy
and cost savings.
The following pages provide function-by-function
instructions to program the T7200/T7300 Program-
mable Commercial Thermostats.
The following general steps are required to enter
your weekly time and temperature schedule into the
thermostat.
. Enter the correct time and day.
.Enter the temperature setpoints you want for
heating and cooling system operation.
.For each day of the week, enter starting time for
the periods when your building will be occupied
and unoccupied.
.To review program entries, simply press the same
function keys used to begln each programming
step. For example, to review the occupied cool
temperature setpoint, press the OCCUPIED
COOL key.
. Sample schedules can be found at the end of the
PROGRAMMING THE THERMOSTAT section.
PROGRAMMING NOTES:
The + and - kevs are used to adjust the dav. time or
setpoint temperatures ahead or’back respectively
Foe$e DISPLAY key to exit any programming
,- IMPORTANT 1
This thermostat provides security which can lock
out programming to prevent tampering. If the key-
board or display do not respond, programming may
be locked
out -- contact your installer. The override,
display and clock keys remain active and are not
locked out by this
feature. See the section titled
SECURITY AND OVERRIDES for details.