Emerson 1F85-0422 Operations Instructions download pdf (Page 5)

INSTALLER/CONFIGURATION MENU

1) Keypad Lockout – This menu selection will display “Lk”

and “OFF” (default, keypad not locked out). The

and

are used to toggle the selection between OFF and

“L” (keypad locked out). When the keypad lockout selec-

tion is enabled “L”, and the MENU button is pressed

again, the display will indicate the number “0” (default,

still disabled) in the time digits. The

and are

used to set the combination number from 0 to 999. If a

combination of 0 is selected and the MENU button is

pressed, the menu will be exited and keypad will not be

locked. If 1 to 999 is selected and the MENU button is

pressed, the combination is stored into memory and the

menu is exited. The “LOC” will display designating key-

pad locked with a valid combination. The SYSTEM button

will operate for 10 seconds after the menu mode is exited

to allow the user to change the mode from “OFF” to the

desired SYSTEM mode.

While the keypad is locked out, a press of MENU will en-

ter the conﬁguration menu. The ﬁrst menu item displayed

is the combination code “0”. The

or keys are

used to set the combination unlock number from 0 to

999. If the unlock number matches exactly with the com-

bination lock number stored in memory when the MENU

button is pressed, the keypad is unlocked and the “LOC”

is removed. If the unlock number does not match when

the MENU button is pressed, the combination returns to

“0” for another attempt to set the unlock code. To exit the

menu without unlocking the keypad, press RUN SCHED.

To reset the combination code and unlock the keypad if

the code is forgotten, see troubleshooting section.

2) 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

3) 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.

4) 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.

5) 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.

6, 7 & 8) 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

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

9) 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.

10) 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).

11) 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.

12) 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.

13) Select F° or C° Readout – Changes the display readout

to Celsius or Fahrenheit as required.

14) 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.

15) 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.

16) 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

1 2 3 4 5 6 7 8 9 10 11 12

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Emerson 1F85-0422 Operations Instructions Page 5

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