Manual Honeywell Chronotherm III - 69-0690 (page 20 of 30) (English)

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ANSWERING COMMON QUESTIONS ABOUT THE CHRONOTHERM III THERMOSTAT

3. Why does the T8631 follow a schedule not

programmed into the thermostat?

When the ▲ ▲ is displayed, the thermostat is control-

ling to the setting in your TotalHome system.

4. How many hours in advance of my WAKE time

should the furnace come on?

The time will vary, up to 24 minutes per degree

Fahrenheit difference between the energy saving

and comfort temperatures, depending on outside

temperature and performance during the past 24

hours. A microchip computer with Adaptive Intelligent

Recovery™ allows the thermostat to

think

for itself

and adjust the furnace or air conditioning recovery

time to reach your desired comfort temperature at

the programmed time. Whenever the temperature is

more than one degree hotter or colder than the

comfort temperature at the programmed time, the

system turns on earlier the next day. This approach

ensures the temperature won’t over- or under-shoot

the set point and allows the proper amount of time

for recovery.

5. What does the HOLD key do?

It bypasses

all

program settings and

holds

the

temperature at the present setting. To increase or

decrease the temperature while on HOLD, use the

WARMER-COOLER keys. Pressing the thermostat’s

RUN PROGRAM key or entering a change at the

external system will return the device to programmed

operations.

6. How long does the HOLD key hold?

Forever! The HOLD key will hold the temperature

indefinitely. The only way to release it is to press the

RUN PROGRAM key or enter a change at the

TotalHome system.

7. How can the T8631A Thermostat save energy

when it comes on and off so many times early in

the morning hours?

Two ways. First, it

saves

energy (and money) by

setting back the temperature for

blocks

of time

during the day or night. Second, it

conserves

energy

by recovering gradually

to the desired temperature.

1. The temperature displayed on the Chronotherm III

Thermostat doesn’t always match the room

temperature on another thermometer located

right next to it. Why?

The Chronotherm III Thermostat is a

very

accurate

instrument designed to sense both air temperature

and wall temperature, like your body does. It gives an

average

reading over a period of time. Because it

adjusts itself, it will take a few days after installation

to adjust to your home.

2. A ▲▲ triangle symbol is on the display sometimes.

What does it mean?

The T8631 Communicating Chronotherm III Thermo-

stat can be connected to a Honeywell TotalHome

system for external access and control. Whenever

the thermostat is controlling to TotalHome system

settings, a ▲▲ appears under the room temperature

display.

This prevents

overshooting

your comfort set point

(and wasting energy) or

under-shooting

the comfort

set point (and forcing you to change the thermostat

setting, also wasting energy).

Honeywell experts have invested years of engineer-

ing and in-home testing to assure that this is the

most effective way to set back and save energy

while optimizing your comfort.

8. Sometimes my Chronotherm III Thermostat

doesn’t allow the house temperature to drop to

my SLEEP setting before it starts bringing the

furnace on. Why?

Many factors affect your comfort and energy

savings. If those factors, such as weather, humidity,

etc. were

always

consistent, an unchanging program

would work just fine. But factors

change

. The whole

point of Adaptive Intelligent Recovery™ is to save

energy

without

sacrificing comfort. If necessary, the

Adaptive Intelligent Recovery™ will

override

your

temperature settings to assure accurate temperature

recovery with optimum comfort and energy savings

for the

current conditions.

the Thermastat iss completely dark and furnace not working
Submitted on 8-2-2020 at 15:43
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Honeywell Chronotherm III - 69-0690 Manual

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