• When you purchased your new Honeywell Chronotherm Ill Thermostat. It's the smart thermostat that: Keeps you comfortable by automati- cally calculating exactly when the furnace or air conditioning should go on to have the house at the desired comfort temperature at the time you want. Saves the maximum amount of energy and money by remembering to.
• Honeywell programmable chronotherm iv plus owners manual Deluxe Programmable Thermostat 1 69-14 FEATURES. Program up to four time periods and temperature setpoints for each daily schedule.

• Honeywell Thermostat Instructions Chronot…
• Honeywell Chronotherm Iii Manual Pdf Maker
• Honeywell Chronotherm Thermostat Manual
• Honeywell Thermostat Chronotherm 3

Your new Honeywell Chronotherm III Fuel Saver Thermostat is a precision instrument that’s quality-built to give you many years of satisfactory service. Each day of the week can be programmed independently so that, regardless of your schedule, you’ll save fuel while automatically maintaining the standard of comfort you require.

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  12.09.2015333.79 Kb4User Manual.pdf

Press and hold until the display shows the time that the temperature should be at the comfort setting.

Press and hold until the display shows the desired heating temperature.

M2706

WARMER

COOLER

NOTE: It is possible to cancel any period showing on the display except MORNING by pushing the CANCEL PERIOD key. To move to the next period while programming, simply press the PERIOD key again.

Program the EVENING time and tem- PERIOD perature, if desired.

AHEAD

BACK

WARMER

COOLER

If the display flashes while holding down TEMPERATURE WARMER or COOLER, the setting limit has been reached. If thermostat is an auto changeover model, the heating temperature must be at least 3 degrees below the air conditioning temperature. For example, if the cooling setting is 75° F, the maximum heating setting is 72° F. To set a higher heating temperature, first raise the cooling setting.

Press and release. The display shows MIDDAY, but no time or temperature.

Press and hold until the display shows the time to start the energy saving period.

Press and hold until the display shows the desired temperature.

Press and release. The display shows EVENING, but no time or temperature.

Press and hold until the display shows the time the temperature should be at the comfort setting.

Press and hold until the display shows the desired heating temperature.

M2709

M2712

T8611M

PROGRAMMING THE THERMOSTAT

Program the NIGHT time and temperature, if desired.

Set the cooling temperatures for all the periods programmed. The program times are the same for both heating and cooling. Only the cooling temperatures need to be programmed if programming has been completed for heating. If you change program times for cooling, you are also changing the times for

PERIOD

AHEAD

BACK

WARMER

COOLER

SET

HEAT/COOL

WARMER

COOLER

PERIOD

WARMER

COOLER

PERIOD

WARMER

COOLER

PERIOD

WARMER

COOLER

Press and release. The display shows NIGHT and the preprogrammed time and temp-erature.

Press and hold until the display shows the time to start the energy saving period.

Press and hold until the display shows the desired heating temperature.

heating.

Press and release. The display shows COOL, the preprogrammed cooling temperature and the programmed start time for NIGHT.

Press and hold until the display shows the desired cooling temperature for NIGHT.

M2717

If the display blinks while holding down TEMPERATURE WARMER or COOLER, the setting limit has been reached. If thermostat can switch automatically between heating and cooling, the heating temperature must be at least 3 degrees F below the air conditioning temperature. For example, if the heating setting is 72° F, the minimum cooling setting is 75° F. To set the cooling temperature lower, first lower the heating setting.

Press and release. The display shows the preprogrammed cooling temperature and the programmed start time for MORNING.

Press and hold until the display shows the desired cooling temperature for MORNING.

Press and release. The display shows the preprogrammed cooling temperature and the programmed start time for MIDDAY.

Press and hold until the display shows the desired cooling temperature for MIDDAY.

Press and release. The display shows the preprogrammed cooling temperature and the programmed start time for EVENING.

Press and hold until the display shows the desired cooling temperature for EVENING.

22

This completes the program schedule for one day. Go to Step 3 to copy this program

M2723

STEP 3

COPYING THE PROGRAM TO THE DESIRED DAYS

It is possible to copy the program for one day to any other day or combination of days. The new program will replace any program already set in the day selected.

STEP 4

SETTING THE SCHEDULES AND TEMPERATURES FOR THE REMAINING DAYS

Use the procedures described in Steps 2 and 3 and summarized in this step toDAY program the remaining days.

SET

HEAT/COOL

AHEAD

BACK

PERIOD

If necessary, press and release to enter the programming mode.

Press and hold until the day containing the program to be copied shows in the display.

Press and release. The day to be copied will show, and the next day will flash, in the display.

Press and release to copy the program into the day that is flashing in the display. Note that the next day now starts to flash.

Press and release if it is not desired to copy into the day that is flashing. Note that the next day now starts to flash.

Press and release the COPY TO key again to select the day that is flashing, or the DAY key to bypass it.

Continue until all desired days are showing in the display and are not flashing.

If an error is made in copying, start over by pressing COPY TO key repeatedly until all days are shown (not flashing); press COPY TO key once more.

Press and release to copy the program into all the days selected.

Press and release to enter the programming mode.

Press and hold until the day desired to program shows on the display.

If COOL shows on the display, press and release to switch to HEAT.

Use the AHEAD/BACK keys to set the time and the WARMER/COOLER keys to set the heating temperature.

Press and release the PERIOD key to step through the remaining time periods. Use the AHEAD/BACK keys to set the time and the WARMER/COOLER keys to set the heating temperature for each time period.

MON TUE

M2725

MON TUE WED

M2726

MON WED

M2727

M2728

PM

TUE

MIDDAY

M2729

M2731

WARMER

COOLER

AHEAD WARMER

BACK COOLER

T8611M

PROGRAMMING THE THERMOSTAT

SET

HEAT/COOL

PERIOD

COPY

FROM

COPY

TO

DAY

COPY

TO

RUN

PROGRAM

STEP 5

SETTING THE SYSTEM AND

FAN SWITCHES ON THE

SUBBASE.

Depending on thermostat model, some of the switch positions shown may not be available. Note the positions provided on subbase, then set the switch(es) as desired.

First set the fan switch.

Then set the system switch.

Press and release so COOL shows on the display.

Press and release the PERIOD key to step through the time periods, and use the WARMER/COOLER keys to set the cooling temperature for each period.

This completes the time and temperature program for another day. Copy it into additional days if desired.

Press and release COPY FROM to enter the copy mode. The next day flashes on the display.

Press and release the COPY TO key to select the day that is flashing, or the DAY key to bypass it.

Continue, using the COPY TO key to bring up the next day, followed by COPY TO to select, or DAY to bypass the DAY, until all desired days are selected.

Press and release RUN PROGRAM to complete the copy.

Repeat Step 4 as needed until all days are programmed.

FAN ON: The fan runs continuously. Use for improved air circulation during special occasions or for more efficient electronic air cleaning.

FAN AUTO: Normal setting for most homes and businesses. The fan starts and stops with the compressor in heat pump systems when the system switch is set to HEAT, AUTO or COOL. When system switch is set to EM. HT., the fan operates with the auxiliary heat (on some models).

EM. HT: The thermostat controls only the backup heat. The heat pump is off.

M2732

WARMER

COOLER

M2734

COPY

TO

DAY

PM

TUE

MIDDAY

M2735

FAN

ON AUTO

M2757

FAN

ON AUTO

M2758

EM. HT. HEAT OFF AUTO COOL

M2752

HEAT: The thermostat controls the heat-

ing system.

EM. HT. HEAT OFF AUTO COOL

M2753

OFF: Both the heating and cooling systems are off.

EM. HT. HEAT OFF AUTO COOL

M2754

Then set the system switch. (continued)

Now, read on to learn about the operating flexibility that makes this thermostat THE SMART CHOICE.

T8611M

PROGRAMMING THE THERMOSTAT • OPERATING THE THERMOSTAT

AUTO (select models only): The thermostat controls either the heating or cooling system, depending on room temperature.

COOL: The thermostat controls the cooling system.

This completes the programming of the thermostat.

If thermostat was removed from the wall to program, replace it following the procedure on page 20.

EM. HT. HEAT OFF AUTO COOL

M2755

EM. HT. HEAT OFF AUTO COOL

M2756

Operating The Thermostat

TEMPORARILY CHANGING

THE PROGRAM

These features allow customizing the program for those times when someone comes home early, is working late or planning to be out for the evening.

Changes made with these keys are active for one program period and then are canceled.

To keep the current temperature through the next program period:

Press and release. The name of the period to be skipped will flash in the display until the start time of the skipped period. During the skipped period, the display will flash “temporary” to show that the programmed temperature for this period is not being used.

IMPORTANT: The CHANGE feature will be operable the day after the thermostat has been programmed and operating. The thermostat requires this time to learn the programmed schedule.

To temporarily raise or lower the temperature for the current period only:

To change back:

Press and hold until the desired temperature is reached. The display will flash “tem-porary”until the next programmed time period starts.

Press and release to cancel any of the temporary settings.

TUE

MIDDAY EVENING

M2736

Honeywell Thermostat Instructions Chronot…

MORNING

M2737

SET

PT

TEMPORARY

HEAT

M2738

PM

TUE

MIDDAY

M2739

T8611M

OPERATING THE THERMOSTAT

Both the heating and cooling temperatures will be canceled.

Use the copy function to cancel the program from other days, but remem-

Press and hold until the desired time period shows on the display.

Press and hold until the desired schedule day shows on the display.

Press and hold the Time or Temperature keys until the display shows the desired new program.

are copied.

Press and release. The next day will flash on the display. Press COPY TO to copy into, or DAY to bypass, the day. Continue until the program has been copied into all desired days.

Press and release to return to normal operation.

gram.

Press and release.

Press and hold to change the temperature setting. After a few seconds, the display will show the current temperature.

Press and release to check the temperature setting.

others can be canceled. Each time period for each day must be canceled separately.

Press and hold until the desired time period shows on the display.

Press and hold until the desired day shows on the display.

Press and release to cancel the time and temperature settings for that time period. ber: all the programs will be copied, not just the cancellation.

WARMER

COOLER

COPY

TO

DAY

SET

PT

HEAT

M2740

SET

PT

HEAT

M2741

SET

PT

HEAT

M2742

PM

TUE

MIDDAY

M2743

M2747

Press and release to return to normal operation.

CHECKING THE PROGRAM TIMES AND TEMPERATURES

If desired, check all the stored settings

tion.

CHECKING THE CURRENT TEMPERATURE SETTING

Press a single key to compare actual room temperature to the setting at any

without affecting the permanent program.

Press and hold until the desired period shows on the display. The start time and temperature setting will appear on the display.

Press and release to display the next day time and temperature for that period.

Press and release to return to normal opera-

time.

Press and release. The display will show the current temperature setting for several seconds, then revert to the room temperature.

M2751

During recovery from energy savings, the setting displayed will not match the programmed setting. This is because the thermostat gradually changes the temperature setting during recovery to provide maxi-

mum comfort combined with most efficient use of the heating or cooling equipOperation- ment.

The T8611M Thermostat provides automatic control of multistage heat pump systems with up to three stages of heat and up to two stages of cool. The first heat stage is the heat pump and the last stage is electric, gas, or oil auxiliary heat. T8611M provides automatic changeover from heat to cool or cool to heat.

ADAPTIVE INTELLIGENT RECOVERY™ OPERATION

Adaptive Intelligent Recovery™ is the Honeywell trademark for the way the T8611 controls the heating and cooling equipment during recovery from an energy savings setting to a comfort setting. During recovery, the control point changes gradually rather than jumping from the energy savings setting to the comfort setting all at once. This provides additional energy savings.

When Adaptive Intelligent Recovery™ is used in the heating mode, the control point raises gradually, maximizing the use of the more economical heat pump to bring the sensed temperature to the desired comfort setpoint. This minimizes the use of the typically more expensive auxiliary heat.

In both heating and cooling, the thermostat monitors recovery each day and adjusts the next day recovery start time. This ensures that the building is at the desired temperature at the programmed time, regardless of the outdoor temperature. Recovery time varies depending on

the weather conditions and the building heating/cooling system.

The advantages are:

•The comfort setting is achieved at the programmed time and maintained regardless of weather conditions; occupants come home and wake up to comfort.

•Drafts from low temperature discharge air are minimized during occupied periods.

•The thermostat automatically uses the more economical heat pump as the primary heat source during heat mode recovery, avoiding the use of the expensive auxiliary heat.

•Comfort and energy savings can be achieved in both heating and cooling.

•Reduces heat pump compressor cycling, extending equipment life.

Use of Outdoor Thermostats

Because Adaptive Intelligent Recovery™ calls for auxiliary heat only when it is truly needed, it eliminates the need for outdoor thermostat(s). If an outdoor thermostat is used with T8611 and it is set close to the balance point, the recovery time from energy savings will be prolonged because the outdoor thermostat will prevent operation of

T8611M

OPERATION

the auxiliary heat even when the T8611 is calling for it. (Balance point is the outdoor temperature below which the heat pump must call on auxiliary heat to help handle the load.) The resulting unnecessarily long recovery times reduce building energy savings.

When Adaptive Intelligent Recovery™ Is Used

Adaptive Intelligent Recovery™ is used during recovery from energy savings. It is bypassed when the setpoint is changed, and when the CHANGE TO LAST PERIOD, SKIP NEXT PERIOD or HOLD TEMP key is pressed. If Adaptive Intelligent Recovery™ is bypassed, the system operates the stages of equipment like a conventional thermostat.

WHAT TO EXPECT DURING RECOVERY FROM ENERGY SAVINGS IN HEATING

The T8611 controls the heating equipment based on the indoor sensed temperature, which is a combination of air temperature and wall temperature.

In Mild Weather

When the outdoor temperature is mild, say 50°F [10° C], the recovery from energy savings will be handled completely by the heat pump, without using the more costly auxiliary heat. The heat pump starts only after the control point has risen above the sensed temperature and is locked on until the comfort setpoint is reached. During the comfort period, the heat pump will cycle on and off as needed to maintain the sensed temperature within +/-1°F of the setpoint. During energy savings periods, the T8611 will call the heat pump on only if the sensed temperature falls below the control point.

In Moderate Weather

When outdoor temperature is below the balance point of the heat pump, the heat pump will run continuously during the recovery period and the auxiliary heat will cycle as necessary. During the comfort period, the heat pump runs continuously and auxiliary heat cycles until the next energy savings period begins. During energy savings, the heat pump cycles on only when the sensed temperature falls below the control point. Under these conditions, auxiliary heat is typically not needed during the energy savings period.

In Severe Weather

When the outdoor temperature is severe, say 0° F [-18°C], the heat pump is on continuously and auxiliary heat

cycles even during the energy savings period. When recovery from energy savings begins, the heat pump will stay on and auxiliary heat will cycle. During recovery, the auxiliary heat ON times will be long, and the OFF times will be short. The ON times will shorten as the control point approaches the comfort setpoint. During the comfort period, the heat pump is on continuously and auxiliary heat cycles until the next energy savings period. When energy saving begins, the heat pump cycles off until the sensed temperature falls below the control point. Although the heat pump comes on when the sensed temperature falls below the control point, the sensed temperature may lag 2° or 3° F below the control point because of the time required to warm up the walls and furniture. Auxiliary heat will cycle as necessary during the energy savings period.

THERMAL PERFORMANCE WITH T8611

During severe weather, the T8611 actually controls closer to the setpoint than a conventional thermostat. This is because the heat anticipator is replaced by two electronic control strategies—cyclingby heat anticipation and proportional plus integral control.

Electronic cycling by heat anticipation acts like a traditional heat anticipator, except that never needs adjustment for various control circuit load currents. It cycles the heat pump off slightly before the room temperature reaches the setpoint to keep heat remaining in the ductwork from overheating the room.

In severe weather, a conventional thermostat with a heat anticipator tends to turn off the thermostat too soon, so the effective control point is somewhat below the setpoint. In very cold weather, the difference between setpoint and effective control point may be 5° or 6° F [2° or 3° C] with a conventional thermostat. This phenomenon is called droop.

Proportional plus integral action eliminates droop by adjusting the on-timeof the stage that is cycling longer or shorter until the control point matches the setpoint. The T8611 controls space temperature within one degree of setpoint, when the temperature has stabilized after an energy savings period.

This zero droop performance of the T8611 provides improved occupant comfort and energy savings. Occupants do not need to continually adjust thermostat setting to maintain desired temperature, even during severe weather.

MINIMUM-OFFTIMING

A minimum-offtimer in the T8611 ensures that the compressor will not come on again for at least five minutes after it turns off. Theminimum-offtimer is triggered when the compressor goes off, or when the system switch is moved. If the compressor turns off when the setpoint is changed or the CHANGE TO LAST PERIOD key is pressed, then theminimum-offtimer is triggered. Theminimum-offtimer operates during the first stage of both heating and cooling.

T8611M

TROUBLESHOOTING

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Troubleshooting

Start the system by setting the thermostat and observing system response. If problem occurs, establish symptom and use the following troubleshooting chart to check for possible cause and action.

S YMPTOM

HEAT PUMP OR AUXILIARY HEAT WON'T OPERATE

PARTIAL DISPLAY

NO DISPLAY

PRESENT SETTING APPEARS INACCURATE

ROOM TEMPERATURE DISPLAY APPEARS INACCURATE

ROOM TEMPERATURE IS NOT WHAT IS EXPECTED ON WEEKENDS

THERMOSTAT TEMPERATURE NEEDS TO BE ADJUSTED ON A REGULAR BASIS

PROGRAM IS LOST DUE TO POWER OUTAGE OR DISPLAY GOES BLANK WHEN POWER IS TURNED OFF

DISPLAY FLASHES WHILE

PROGRAMMING

DISPLAY FLASHES DURING OPERATION

THERMOSTAT INOPERATIVE

PRESENT SETTING TOO LOW/HIGH

SYSTEM SWITCH ON THERMOSTAT IN WRONG POSITION

MINIMUM-OFFTIMES IN THERMOSTAT IN OPERATION ON COOLING OR HEATING

INCORRECT WIRING

HEAT PUMP OR AUXILIARY HEAT SYSTEM INOPERATIVE

INOPERATIVE THERMOSTAT

NO POWER TO THERMOSTAT

THERMOSTAT IN SELF-TESTMODE

THERMOSTAT MOUNTED INCORRECTLY ON BASE

THERMOSTAT IS IN RECOVERY MODE

THERMOSTAT HAS SEPARATE REMOTEMOUNTED SENSOR

THERMOSTAT NOT PROGRAMMED FOR WEEKENDS

WARMER/COOLER KEYS BEING USED TO ADJUST TEMPERATURE

BATTERIES ARE INCORRECTLY INSTALLED

BATTERIES ARE DEAD

IMPROPER PROGRAM SEQUENCE

AUTOMATIC CHANGEOVER THERMOSTAT HEATING OR COOLING TEMPERATURES CAN NOT BE SET CLOSER THAN 3°F

PROGRAMMING HAS BEEN LOST BECAUSE OF A POWER OUTAGE

CONDUCT SELF-TEST;SEE CHECKOUT.

ADJUST TEMPERATURE BY PUSHING WARMER/COOLER KEYS.

RESET THERMOSTAT SYSTEM SWITCH.

WAIT 5-10MIN. OR USESELF-TESTIN THERMOSTAT. SEE CHECKOUT.

CHECK CIRCUIT DIAGRAM.

CONSULT HEAT PUMP/AUXILIARY HEAT SYSTEM INSTRUCTIONS.

REPLACE THERMOSTAT.

CHECK THAT HEAT OR COOL SYSTEM POWER IS ON.

PRESS RUN PROGRAM KEY TWICE.

SEE INSTALLATION INSTRUCTIONS FOR CORRECT MOUNTING.

•NORMAL OPERATION THERMOSTAT TURNS ON HEATING/COOLING EARLY TO MEET TEMPERATURE SETTING AT PROGRAMMED TIMES.

•RECOVERY CAN BE ENDED BY PUSHING WARMER/COOLER KEYS.

•THERMOSTAT IS CONTROLLED BY TEMPERATURE SENSED AT REMOTE SENSOR LOCATION.

•CHECK TEMPERATURE AT REMOTE SENSOR LOCATION.

•MAKE SURE WIRING FROM THERMOSTAT LOCATION TO REMOTE SENSOR LOCATION IS IN GOOD CONDITION.

REPROGRAM FOR WEEKENDS PER INSTRUCTIONS.

REPROGRAM THERMOSTAT TO MAKE PERMANENT CHANGE IN PROGRAM. WARMER/ COOLER KEYS ARE TEMPORARY UNLESS PERIOD KEY IS PRESSED FIRST.

REMOVE AND REPLACE PER MARKINGS ON THERMOSTAT.

REPLACE BATTERIES.

CHECK HOMEOWNERS MANUAL FOR CORRECT PROGRAM SEQUENCE.

SET HEATING AND COOLING TEMPERATURES 3°F OR MORE APART.

REPROGRAM ACCORDING TO PROGRAMMING INSTRUCTIONS (MAKE SURE BATTERIES ARE INSTALLED).

T8611M

GLOSSARY

Glossary

AUX. HT. light (green)

This light glows whenever the thermostat is calling for operation of the backup heater. Backup (auxiliary) heat is more expensive to operate than the heat pump, and typically is used only when the heat pump is unable to handle the load (located on subbase).

CHECK light (yellow)

Consult heat pump literature to determine its meaning (located on subbase).

Comfort temperature

The temperature desired when active and occupying the building.

EM. HT. light (red)

This light glows whenever the thermostat system switch is in the EM. HT. position (located on subbase). On some systems, it may also indicate the need to switch to EM. HT. because of a heat pump problem.

Energy-savingtemperature

The lower (heating) or higher (cooling) temperature that allows savings on heating and cooling costs when asleep or away. Also called the setback (heating) or setup (cooling) temperature.

Preprogrammed schedule

This is the schedule programmed into the thermostat at the factory. It sets a night program that provides energy savings if owner does not set his/her own program, or if personal program is lost for any reason. The program, which is the same for all days of the week, is:

Program

The times and temperatures the owner sets to define the comfort and energy saving periods for each day’s schedule.

Recovery

The time when the thermostat operates the heating or air

Honeywell Chronotherm Iii Manual Pdf Maker

conditioning equipment to return the building from the energy saving temperature to the comfort temperature. The thermostat starts the recovery period early so the building will be at the comfort setting by the time the owner has chosen.

Setback

Reducing the temperature in the building for a set period in heating for energy savings. The lower temperature is the energy savings temperature.

Setup

Raising the temperature in the building for a set period in cooling for energy savings. The higher temperature is the energy savings temperature.

Setpoint

The thermostat temperature setting the owner selects. The thermostat turns the heating or cooling equipment on and off to maintain this temperature at the thermostat location until another temperature setting (setpoint) goes into effect.

SYSTEM light (yellow)

Honeywell Chronotherm Thermostat Manual

This light glows whenever the thermostat is calling for heating or cooling (located on thermostat).

Time period

One of four program periods: MORNING, MIDDAY, EVENING, and NIGHT; available with the Chronotherm III™ Thermostat. One period begins when the previous program period ends.

MORNING—Thetime period when the owner brings the building to a comfortable temperature to begin the day. This is the only period that must contain a time and temperature for every day.

MIDDAY—Thetime period when the owner can set back (heating) or set up (cooling) the temperature for daytime energy savings if the building is unoccupied.

EVENING—Thetime period when the owner wants the building at a comfortable temperature for evening activities after daytime energy savings.

NIGHT—Thetime period when the owner can set back (heating ) or set up (cooling) the temperature for energy savings because family members are asleep or the building is unoccupied. Often a NIGHT energy savings temperature is set only for the heating season so family members can sleep cool in summer.

Honeywell Thermostat Chronotherm 3