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INSTALLER/CONFIGURATION MENU
1) This control can be configured for:
MS 2 – Multi-Stage System (no heat pump)
HP 1 – Heat Pump with one stage of compressor
SS 1 – Single Stage System
2) GAS or Electric (ELE) fan operation. If the heating sys-
tem requires the thermostat to energize the fan, select
ELE. Select GAS if the heating system energizes the fan
on a call for heat.
3) Select Cool Savings™ value – Selects the amount
of adjustment for the Cool Savings™ feature in Cool
mode with 1 (1°) being the least amount of adjustment
and 6 (6°) being the most amount of adjustment. Default
value is 0 which disables this feature. Cool Savings is
an optional energy saving feature that can reduce your
cooling costs. It is based on the principal that lower
indoor humidity makes a slightly higher temperature
feel more comfortable. Cool Savings operates during
periods of high demand which normally occur on the
hottest summer days when a cooling system may run
for hours to reach the thermostat setting. Long cooling
run times also lower the indoor humidity. Cool Savings,
very slowly, adjusts the setpoint temperature to make the
setpoint closer to the displayed room temperature, to a
maximum of the number of degrees you select. Adjust-
ing the setpoint temperature over a long cooling run time
allows the system to reach your set temperature and turn
off. The room temperature will actually be higher than
the thermostat displays but the reduction in humidity will
allow comfort at the slightly higher temperature.
To turn this feature on in the Cool mode press Cool
Savings. The display will show “Save” next to the
setpoint temperature. When Cool Savings is making ad-
justments to the room temperature display “Save” will be
flashing and the displayed room temperature may vary
within the adjustment range you selected.
If “Save” is not displayed and this feature is OFF, no
change will occur when the cooling system is continu-
ously running during periods of high demand.
4) Energy Management Recovery: (this step is skipped if
configured to be non-programmable). Energy Manage-
ment Recovery (E) On enables the thermostat to start
heating or cooling early to make the building temperature
reach the program setpoint at the time you specify. Heat-
ing will start 5 minutes early for every 1° of temperature
required to reach setpoint.
Example: E On is selected and your heating is pro-
grammed to 65° at night and 70° at 7 AM. If the build-
ing 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
set temperature.
5, 6 & 7) Cycle Rate Selection – The factory default setting
for Heat and Cool modes, SS1 and MS2 is medium cycle
(ME). For Heat Pump and HP1, the default setting is
medium (ME). For Emer (Aux) the default setting is fast
cycle (FA). To change cycle rate, press the
or
key.
Cycle rate differentials for different settings are:
Fast Medium Slow
MODE FA ME SL
Heat (SS1, MS2) 0.4°F 0.6°F 1.7°F
Cool (SS1, MS2) 0.9°F 1.2°F 1.7°F
Heat Pump (HP1) 0.9°F 1.2°F 1.7°F
Emer (HP1) 0.6°F - 1.7°F
8) Select Compressor Lockout CL OFF or ON – Select-
ing CL ON will cause the thermostat to wait 5 minutes
between cooling cycles. This is intended to help protect
the compressor from short cycling. Some newer com-
pressors already have a time delay built in and do not
require this feature. Your compressor manufacturer can
tell you if the lockout feature is already present in their
system. When the thermostat compressor time delay oc-
curs, it will flash the setpoint for up to five minutes.
9) System Mode Configuration – This thermostat is con-
figured for Heat and Cool (SYSTEM switch with Cool Off
Heat) default. It can also be configured for Heat and Cool
with Auto changeover (Heat, Auto, Cool, Off), Heat only
with fan (Off Heat), Heat only without fan, Auto only
(Auto Off), and Cool only (Cool Off).
10) Select Backlight Display – The display backlight im-
proves display contrast in low lighting conditions. When
the “C” terminal is powered, selecting backlight CdL ON
will keep the light on continuously. Select backlight OFF
will turn the light on momentarily after any key is pressed.
When the “C” terminal is not powered, the light will be on
momentarily after any key is pressed no matter whether
the backlight is selected ON or OFF.
11) Select Temperature Display Adjustment 4 LO to 4 HI
– Allows you to adjust the room temperature display up
to 4° higher or lower. Your thermostat was accurately cali-
brated at the factory, but you have the option to change
the display temperature to match your previous thermo-
stat. The current or adjusted room temperature will be
displayed.
12) Select F° or C° Readout – Changes the display readout
to Celsius or Fahrenheit as required.
13) Limited Heat Range – This feature provides a maximum
setpoint temperature for heat. The default setting is 90°F.
It can be changed between 62°F and 89°F by pressing
the
or key.
14) Limited Cool Range – This feature provide a minimum
setpoint temperature for cool. The default setting is 45°F.
It can be changed between 46°F and 82°F by pressing
the
or key.
15) Program Options: 1F85 only, configured for 5/1/1 day or
5/2 day programming or non-programming mode. The
default setting is P3, indicating 5/1/1 day programming.
The programs per week can be changed to P2 or P0 by
pressing the
or keys. A selection of 0 Days for
non-programmable will eliminate the need for EMR, and
that step in the menu will be skipped.
16 & 17) Select Automatic Schedule – 1F85 only, with just
one touch of the Auto Schedule key this feature allows
you to program a desired comfort temperature into all the
program periods along with a 6° set back for night peri-
ods of both Heat and Cool programs. Factory default is
“On” for both. When Heat AS On and Cool AS On are
activated while in Heat or Cool mode, select desired
setpoint temperature and press Auto Schedule. This
value will be copied into all the morning, day and evening
program periods. The night program periods will have a
6°F set back.
18 & 19) Select Fast Second Stage ON or OFF – Heat
pump or Multi-stage only, in the run mode, with the fast
Heat feature enabled (FA Heat On), if the Heat setpoint
temperature is manually raised by 3°F (2°C) or more
above the actual temperature using
the second
stage will energize immediately. With FA OFF, second
stage will not energize until the setpoint temperature is
1°F or more above actual temperature for more than ten
minutes. The Fast Cool feature (FA Cool) provides the
same controls when the setpoint temperature is lowered.
20) Select Daylight Saving Time Calculation – 1F85 only,
this feature will allow the thermostat to calculate the DST
automatically and apply it to the Real Time Clock display.
Default On. Use
or touch keys to select the
feature OFF.