EMERSON IF85U 22NP User Manual1

1F85U-22NP (Non-Programmable)  
THERMOSTAT INSTALLATION  
Installation and Operating Instructions  
TM  
WIRING  
80 Series Universal Thermostat  
Battery Powered or Hardwired with Common  
Refer to equipment manufacturer’s instructions for specific system wiring information. After wiring, see  
INSTALLER MENU for proper thermostat configuration. Wiring table shown are for typical systems and  
describe the thermostat terminal functions. Wiring will change when dedicated emergency heat is on  
(See Installer Menu #15).  
Terminal Designations  
Terminal Function  
RC  
Power (24V) - Cooling  
RH  
Power (24V) - Heating  
Reversing Valve or output for 3 wire zone valves  
Configurable as “O” or “B” Reversing Valve or 3 wire  
zone heat (power close)  
O/B  
6 (not shown) - 3 wire zone valve  
Y
1st Stage Compressor (conventional or heat pump)  
G
Fan Relay  
1st Stage Heat (conventional);  
1st Stage Auxiliary Heat (heat pump)  
Can operate as Emergency Heat only  
(See Installer Menu #15)  
W/E  
C
L
Common wire for 24V (optional with batteries)  
Optional Accessory: Wall Cover-Up Plate F61-2663, 6-3/4” W x 4-1/2” H  
INDEX  
Heat Pump Malfunction / Diagnostic terminal  
(input signal requires common)  
Thermostat Installation  
2-4  
2
Maximum  
Stages  
Y2  
2nd Stage compressor (conventional only)  
Thermostat Applications  
Wiring  
Heat/ Cool  
2nd Stage Heat (Conventional)  
Can operate as 1st Stage Auxiliary Heat  
(See Installer Menu #15)  
Installer Menu  
3-4  
4
W2  
Conventional Gas, Oil, Electric  
(mV and 24V), Heat only, Cool only or  
Heat/Cool Systems  
2/2  
2/1  
Test Equipment  
Using the Thermostat  
Thermostat Overview  
User Menu  
5-7  
5
Heat Pump (Air Source or Geothermal)  
with Aux. Heat  
Leveling Thermostat  
Leveling is for appearance only and  
will not affect thermostat operation.  
6
Thermostat Operation  
Troubleshooting  
Homeowner Help Line  
6
MERCURY NOTICE: This product does not contain  
mercury. However, this product may replace a product  
that contains mercury. Mercury and products containing  
mercury must not be discarded in household trash.  
Refer to www.thermostat-recycle.org for information  
on disposing of products containing mercury.  
7-8  
8
Precautions  
SPECIFICATIONS  
• Do not exceed the specification ratings.  
Electrical Rating:  
• All wiring must conform to local and national electrical codes and ordinances.  
• This control is a precision instrument, and should be handled carefully. Rough handling or  
distorting components could cause the control to malfunction.  
Battery Power ..................................... mV to 30VAC, NEC Class II, 50/60 Hz  
Input-Hardwire.................................... 20 to 30VAC, NEC Class II, 50/60 Hz  
Terminal Load.......................................... 1.5 A per terminal, 2.5A maximum all terminals combined  
Setpoint Range ........................................ 45° to 99° F (to 37° C)  
WARNING  
!
Rated Differentials (@ 6°F/ Hr):  
Fast  
Med  
Slow  
1.9°F  
1.7°F  
1.7°F  
1.9°F  
CAUTION  
!
Do not use on circuits exceeding specified voltage.  
Higher voltage will damage control and could  
cause shock or fire hazard.  
Do not short out terminals on gas valve or primary  
control to test. Short or incorrect wiring will burn  
out thermostat and could cause personal injury  
and/or property damage.  
Heat (Conventional Gas / Oil / Elect)..... 0.5°F  
Cool (Central Air) ................................. 0.9°F  
Heat Pump (Heat and Cool) ................ 0.9°F  
Heat Pump Aux. .................................. 0.5°F  
0.75°F  
1.2°F  
1.2°F  
0.75°F  
To prevent electrical shock and/or equipment  
damage, disconnect electrical power to system,  
at main fuse or circuit breaker box,until  
installation is complete.  
Operating Ambient .................................. 32°F to +105°F (0° to +41°C)  
Display Temperature Range ....................... 32°F to +99°F (0 to 37°C)  
Operating Humidity ................................. 90% non-condensing maximum  
Shipping Temperature Range................... -20°F to + 150°F (-29° to +65°C)  
Thermostat Dimensions........................... 3-3/4” H x 6” W x 1-1/8” D  
CAUTION  
!
To prevent compressor and/or property damage, if the outdoor temperature is below 50°F,  
DO NOT operate the cooling system.  
Do not allow the compressor to run unless the compressor oil heaters have been operational  
white-rodgers.com  
emersonclimate.com  
PART NO. 37-7572B-EN  
for 6 hours and the system has not been operational for at least 5 minutes.  
2
1535  
USER MENU  
USING THE THERMOSTAT  
THERMOSTAT OVERVIEW  
Before you begin using your thermostat, you should be familiar with its features, display and  
the location/operation of the thermostat buttons and switches.  
To customize thermostat settings, press the Menu button from the home screen. Use the  
or buttons to highlight Settings and press Next. Use Next and Back to navigate  
through menu items. Press or to change the setting.  
User’s Menu #  
(Press Menu button  
and release)  
Default Setting Settings  
Description  
(flashing icons) (Press or  
)
THERMOSTAT BUTTONS  
THE DISPLAY  
°F – Fahrenheit  
Fahrenheit or Celsius  
°F  
AND SWITCHES  
01  
02  
°C – Celsius  
1.) Fan Button  
8.) Next (Menu button) is used to navigate within a menu  
Temperature Display  
Adjustment: adjust the Room  
Temperature  
0
-5 to +5  
2.) Away Button (set a frequently used  
9.) Back (Fan button) is used to navigate within a menu  
temperature)  
Continuous Display Light:  
keep the backlight always on –  
“C” wire required  
On – always on  
OFF – momentarily  
3.) System Button  
10.) Exit (Away button) returns to the home screen  
OFF  
03  
4.) Backlight Button (located on the top 11.) Thermostat is protecting the equipment from short cycling  
of the thermostat)  
(5-minute delay)  
Auto-Changeover: thermostat  
automatically switches between  
heat and cool  
On - enable auto  
OFF - disable auto  
OFF  
OFF  
5.) Raises Temperature Setting  
12.) Indicates that the system is running in Cool, Heat or Auxiliary  
mode. (Heat Pump Only -The auxiliary will run in Heat mode  
when the heat pump cannot maintain the set temperature.)  
04  
05  
Keypad Lock: prevent unwant-  
ed changes to the thermostat  
On – disable buttons  
OFF – all buttons are active  
6.) Access Menu Options  
13.) SEE TROUBLESHOOTING  
7.) Lowers Temperature Setting  
14.) Battery status indicator  
15.) Replace battery indicator  
16.) Temperature setpoint  
THERMOSTAT OPERATION  
Away – Stores a frequently used temperature setting so that you can select it with a  
touch of the Away button. To set an Away temperature press temp up or temp down  
to the temperature you want. At the desired setting, hold the Away button for 3 seconds.  
When the setting is stored the set point will flash one time.You can store an Away setting  
for both Cool and Heat modes. (Example: Set an Away temperature to 88°F in the summer  
for cooling and 55°F in the winter for heating.)  
17.) Appears when the keypad is locked (to prevent unwanted  
changes)  
15  
16  
4
14  
Keypad Lockout – To prevent unwanted changes, the buttons can be disabled.  
To turn this feature On, press and hold and the Menu button unꢀl the icon appears  
(this can also be turned on in the menu). To turn Off, press and hold and the Menu but-  
ton for 3 seconds.  
5
13  
12  
17  
6
7
11  
8
3
1
2
10  
9
Whenever “  
Replace ” appears in the display, new premium brand AA alkaline batteries  
should be installed. If the house will be unoccupied for an extended period and either  
or “  
Replace ” is displayed, install new batteries before leaving.  
5
6
TROUBLESHOOTING (C0ntinued)  
TROUBLESHOOTING  
Symptom  
Possible Cause  
Corrective Action  
Symptom  
Possible Cause  
Corrective Action  
1.) Heating system is not able to heat 1.) See corrective action for “No Heat”  
the space to within 10 degrees of  
1.) Blown fuse or tripped circuit  
breaker  
2.) Furnace power switch to OFF  
3.) Furnace blower compartment  
door panel loose or not properly  
installed  
4.) Loose connection to thermostat  
or system  
1.) Replace fuse or reset breaker  
the setpoint within 2 hours  
2.) Cooling system is not able to cool 2.) See corrective action for “No Cool”  
the space to within 10 degrees of  
2.)Turn switch to ON  
3.) Replace door panel in proper position to  
engage safety interlock or door switch  
No Heat/  
No Cool/  
the setpoint within 2 hours  
“Call for Service” 3.) If “--” is displayed for the Room  
No Fan  
3.) Replace thermostat  
(common problem)  
icon appears on  
displayed  
Temperature, a replacement  
thermostat is needed  
4.) None of the buttons operate on  
the thermostat  
4.) Tighten Connections  
4.) Make sure keypad lockout is not turned on ( ),  
If it’s OFF, try reset shown below.  
1.) System not set to Heat  
1.) Set thermostat to Heat.  
5.) If “Call for Service” is flashing,  
compressor self diagnostic is  
detecting an issue with the  
outdoor unit  
5.) Contact a service person to verify the outdoor  
equipment is operating correctly  
2.) Loose connection to thermostat 2.) Verify thermostat and system wires are  
or system  
securely aꢁached.  
3.) Heating System requires  
service or thermostat requires  
replacement  
3.) Diagnosꢀc: Set System to Heat and raise the  
setpoint above room temperature. Within five  
minutes the thermostat should make a soſt click  
sound and “Heat On” should appear on display.  
This sound indicates the thermostat is operaꢀng  
properly. If the thermostat does not click, try the  
reset operaꢀon listed below. If the thermostat  
does not click aſter being reset, contact your  
heaꢀng and cooling service person or place of  
purchase for a replacement. If the thermostat  
clicks, contact the furnace manufacturer or a  
service person to verify the heaꢀng system is  
operaꢀng correctly.  
Resetting the Thermostat or Thermostat Settings  
No Heat  
If the thermostat has good batteries, but has a blank display or does not respond to key  
presses, the thermostat should be reset by removing the batteries for 2 minutes. This reset  
will not change the menu settings or program. If the condition persists after reinstalling the  
batteries, replace the thermostat.  
To conveniently reset only the schedule and user settings back to factory defaults, press Menu  
and Backlight buttons at the same time and hold until the display goes blank and resets.  
1.) System not set to Cool  
1.) Set thermostat to Cool.  
2.) Loose connection to thermostat 2.) Verify thermostat and system wires are securely  
or system  
aꢁached.  
3.) Cooling System requires  
service or thermostat requires  
replacement  
3.) Diagnosꢀc: Set System to Cool and lower  
setpoint below room temperature. Same  
procedures as diagnosꢀc for “No Heat” condiꢀon  
except set the thermostat to Cool and lower the  
setpoint below the room temperature. There may  
be up to a five minute delay before the thermostat  
clicks in Cooling if the compressor lock-out opꢀon  
is selected in the installer menu. (see INSTALLER  
MENU, item 50)  
No Cool  
Check each wire connection to verify they are not  
Heat, Cool or Fan Possible short in wiring, thermostat, shorted or touching other wires. Try resetting the  
Runs Constantly  
heat, cool or fan system  
thermostat. If the condition persists contact your  
HVAC service person.  
Thermostat  
Display &  
Thermometer  
Disagree  
Thermostat display requires  
adjustment  
Display can be adjusted +/-5°. See User Menu  
item 05  
Digital thermostats provide precise control and  
cycle faster than older mechanical models. The  
system turns on and off more frequently, but runs  
for a shorter time. If you would like to increase  
cycle time, choose SLO for slow cycle in the  
Installer menu. (Reference menu items 30, 32 &  
35.) If an acceptable cycle rate is not achieved,  
contact your HVAC service person.  
Furnace (Air  
Conditioner)  
Cycles Too Fast or  
Slow (narrow or  
wide temperature  
swing)  
The location of the thermostat and/  
or the size of the Heating System  
may be influencing the cycle rate  
HOMEOWNER HELP LINE: 1-800-284-2925  
(Troubleshooting continued on next page)  
White-Rodgers is a business  
of Emerson Electric Co.  
The Emerson logo is a  
trademark and service mark  
of Emerson Electric Co.  
7

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