White-rodgers 1F78H User Manual download pdf (Page 5)

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Press or to select:

OFF

4 LO to 4 HI

Configuration Menu

* Press

HOLD to advance to next item or TIME to move backwards to previous item

Step

Press Button(s)

PRGM and RUN

HOLD*

RUN

Displayed (Factory Default)

(FA)

d-L (ON)

E (ON)

LOC (OFF)

0 HI (0)

(F)

Comments

Select FA or SL (Fast or Slow) heating cycle rate

N/A

Select Energy Management Recovery OFF or ON

Select compressor lockout OFF or ON

Select temperature display adjustment higher or lower

Select temperature display to F or C

Returns to normal operation

PROGRAMMING YOUR THERMOSTAT

This section will help you plan your thermostat’s program to meet

your needs. For maximum comfort and efficiency, keep the

following guidelines in mind when planning your program.

• When heating (cooling) your building, program the tempera-

tures to be cooler (warmer) when the building is vacant or

during periods of low activity.

• During early morning hours, the need for cooling is usually

minimal.

Look at the factory preprogrammed times and temperatures shown

below. If this program will suit your needs, simply press the RUN

button to begin running the factory preset program.

If you want to change the preprogrammed times and tempera-

tures, follow these steps.

Determine the time periods and temperatures for your weekday and

weekend programs. You must program four periods for both the

weekday and weekend program. However, you may use the same

heating and cooling temperatures for consecutive time periods. You

can choose start times, heating temperatures, and cooling tem-

peratures independently for both weekday and weekend programs

(for example, you may select 5:00 AM and 70° as the weekday 1st

period heating start time and temperature, and also choose 7:00

AM and 76° as the weekday 1st period cooling start time and

temperature). Use the table at the bottom of the page to plan your

program time periods and the temperatures you want during each

period. You may also want to look at the sample program table to

get an idea of how the thermostat can be programmed.

Entering Your Program

Follow these steps to enter the heating and cooling programs you

have selected.

Set Current Time and Day

1. Press TIME button once. The display will show the hour only.

EXAMPLE:

2. Press and hold either or until you reach the correct

hour and AM/PM designation (AM begins at midnight; PM

begins at noon).

4. Press and hold either or until you reach the correct

minutes.

5. Press TIME once. The display will show the day of the week.

1) Select FA or SL (Fast or Slow) Heating Cycle Rate—The

FA setting is frequently used for gas, oil or electric heat. The

SL setting produces a longer heating cycle which is normally

for hot water or steam (hydronic) systems. Both settings

produce very accurate temperature control and can be set to

your personal preference. FA cycles the system just under

1°F and the SL setting cycles at approximately 1.5F°.

2) Not Available

3) Select Energy Management Recovery OFF or ON—

Energy Management Recovery (EMR) causes the thermo-

stat to start heating or cooling early to make the building

temperature reach the program setpoint at the time you

specify. Heating will start 5 minutes early for every 1° of

temperature required to reach setpoint.

Example: You select EMR and have your heating pro-

grammed to 65° at night and 70° at 7 AM. If the building

temperature is 65° the difference between 65° and 70° is 5°.

Allowing 5 minutes per degree the thermostat setpoint will

change to 70° at 6:35 AM. Cooling allows more time per

degree because it takes longer to reach temperature.

4) Select Compressor Lockout LOC OFF or ON—Selecting

LOC ON will cause the thermostat to wait 5 minutes before

turning on the compressor if the heating and cooling system

loses power. It will also wait 5 minutes minimum between

cooling cycles. This is intended to help protect the compres-

sor from short cycling. Some newer compressors already

have a time delay built in and do not require this feature. Your

compressor manufacturer can tell you if the feature is already

present in their system. When the compressor time delay

occurs it will flash the

for about five minutes then turn on

the compressor.

5) Select Temperature Display Adjustment 4 LO to 4 HI—

Allows you to adjust the room temperature display 4° higher

or lower. Your thermostat was accurately calibrated at the

factory but you have the option to change the display tem-

perature to match your previous thermostat.

6) Select F° or C° Readout—Changes the display readout to

Centigrade or Fahrenheit as required.

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White-rodgers 1F78H User Manual Page 5

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