White Rodgers 875 Thermostat User Manual


 
5
4) Select Energy Management Recovery OFF or ON
(not available on all Thermostats) Energy Management
Recovery (EMR) causes the thermostat 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. Cooling allows more time per degree because it
takes longer to reach temperature.
Example: You select EMR and have your heating programmed
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.
5) Select fi lter replacement run time – The thermostat will
display “FLTR” after a set time of operation. This is a reminder
to change or clean your air fi lter. This time can be set from
0 to 1950 hours in 50 hour increments. A selection of 000
will cancel this feature. When “FLTR” is displayed, you can
clear it by pressing HOLD and RUN at the same time. This
resets the timer and starts counting the hours until the next
fi lter change. Changing the time in the menu also resets the
timer.
6) 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 fl ash the (snowfl ake icon) for about fi ve
minutes then turn on the compressor.
7) 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
temperature to match your previous thermostat.
8) Select F° or C° Readout – Changes the display readout to
Centigrade or Fahrenheit as required.
OPERATING FEATURES
Now that you are familiar with the thermostat buttons and display,
read the following information to learn about the many features
of the thermostat.
SIMULTANEOUS HEATING/COOLING PROGRAM STOR-
AGE — When programming, you can enter both your
heating and cooling programs at the same time. There is
no need to reprogram the thermostat at the beginning of
each season.
TEMPERATURE OVERRIDE — Press
or until the
display shows the temperature you want. The thermostat
will override current programming and keep the room tem-
perature at the selected temperature until the next program
period begins. Then the thermostat will automatically revert
to the program.
HOLD TEMPERATURE — The thermostat can hold any
temperature within its range for an indefi nite period without
reverting to the programmed temperature. Momentarily press
HOLD button. “HOLD” will be displayed. Then choose the
desired temperature by pressing
or . The thermostat
will hold the room temperature at the selected setting until
you press RUN button to start program operation again.
CONFIGURATION MENU — Allows you to customize
certain thermostat options.
PROGRAMMING YOUR THERMOSTAT
This section will help you plan your thermostat’s program to
meet your needs. For maximum comfort and effi ciency, keep the
following guidelines in mind when planning your program.
• When heating (cooling) your building, program the
temperatures 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.
1
Step Press Button(s) Displayed (Factory Default) Press or to select: COMMENTS
HOLD
(0:00)
0 to 8 hrs (in
15 minute increments)
2
(FA)
SL
Select temporary Hold time
4
5
E
(ON)
OFF
6
7
LOC
(OFF)
ON
0 HI
(0)
4 LO to
4 HI
(F) C
Returns to normal operation
8
9
Select Energy Management Recovery OFF or ON
(not available on all thermostats)
Select compressor lockout OFF or ON
Select temperature display adjustment higher or lower
Select temperature display to F or C
RUN
PRGM
and RUN
HOLD
*
HOLD
*
3
d-L
(ON)
OFF
Select display backlight OFF or ON
HOLD
*
HOLD
*
Filter
(000)
0 to 1950 hours
(in 50 hour increments)
Select filter replacement run time
HOLD
*
HOLD
*
HOLD
*
Select FA or SL (Fast or Slow) heating cycle rate
Configuration Menu
* Press
HOLD to advance to next item or TIME to move backwards to previous item