White Rodgers 1f86 244 User Manual

1F86-244  
Non-Programmable Electronic Digital Thermostat  
WHITE-RODGERS  
INSTALLATION AND  
OPERATION INSTRUCTIONS  
Operator: Save these instructions for future use!  
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY  
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE  
PERSONAL INJURY AND/OR PROPERTY DAMAGE.  
DESCRIPTION  
Your new White-Rodgers Digital Thermostat uses the technol-  
ogy of a solid-state microcomputer to provide precise tempera-  
ture control.  
• LCD continuously displays set point and room temperature  
°F/°C convertibility  
• Temperature range 45° to 90°F  
• RC, RH, W, Y, G , O and B terminals  
Features:  
• Simultaneous heat and cool set point storage  
• Pre-set temperature control  
• Backlit display  
• B and O terminals for single stage heat pumps (no auxiliary  
heat) or damper operation  
• Set point storage in case of power loss  
• Batterypowered(2"AA"Energizer® alkalinebatteriesincluded)  
PRECAUTIONS  
Thisthermostatisintendedforusewithalowvoltagesystem;do  
not use this thermostat with a line voltage system. If in doubt  
about whether your wiring is millivolt, line, or low voltage, have  
itinspectedbyaqualifiedheatingandairconditioningcontractor  
or electrician.  
WARNING  
!
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 damage  
thermostat and could cause personal injury and/or  
property damage.  
Do not exceed the specification ratings.  
Allwiringmustconformtolocalandnationalelectricalcodesand  
ordinances.  
This control is a precision instrument, and should be handled  
carefully. Roughhandlingordistortingcomponentscouldcause  
the control to malfunction.  
Thermostat installation and all components of the  
system shall conform to Class II circuits per the NEC  
code.  
CAUTION  
!
To prevent electrical shock and/or equipment dam-  
age, disconnect electric power to system at main fuse  
or circuit breaker box until installation is complete.  
SPECIFICATIONS  
ELECTRICAL DATA  
APPLICATIONS  
Electrical Rating:  
For use with:  
8 to 30 VAC 50/60 Hz. or D.C.  
0.05 to 1.0 Amps (Load per terminal)  
1.5 Amps Maximum Total Load (All terminals combined)  
Standard heat/cool or heat only systems  
Electric heat systems  
Gas or oil fired systems  
Gas systems with intermittent ignition devices (I.I.D.)  
and/or vent dampers  
Hydronic (hot water or steam) systems  
Single-stage heat pump systems (no auxiliary heat)  
Millivolt systems  
THERMAL DATA  
Setpoint Temperature Range:  
45°F to 90°F (7°C to 32°C)  
Operating Ambient Temperature Range:  
32°F to 105°F  
Operating Humidity Range:  
0 to 90% RH (non-condensing)  
Shipping Temperature Range:  
-4°F to 150°F  
DO NOT USE WITH:  
Multi-stage systems  
Systems exceeding 30 VAC and 1.5 amps  
3-wire zoned hydronic heating systems  
WHITE-RODGERS DIVISION  
EMERSON ELECTRIC CO.  
9797 REAVIS ROAD  
PART NO. 37-6174A  
Printed in U.S.A.  
0046  
ST. LOUIS, MISSOURI 63123-5398  
JUMPER  
WIRE  
THERMOSTAT  
SYSTEM  
Hot  
Y
B
O
G
W
RC  
RH  
THERMOSTAT  
SYSTEM  
Y
B
O
G
W
RC  
RH  
Cooling  
System Relay System  
Fan  
Heating  
24 VAC  
120 VAC  
Neutral  
Fan  
Relay  
Heating  
System  
NOTE  
Hot  
HEATING  
For 2-wire Heat  
only attach to  
RH and W  
TRANSFORMER  
24 VAC  
120 VAC  
Neutral  
Hot  
TRANSFORMER  
24 VAC  
120 VAC  
Neutral  
Figure 2. Typical wiring diagram for  
heat only, 3-wire, single transformer systems  
COOLING TRANSFORMER  
Figure 5. Typical wiring diagram for  
heat/cool, 5-wire, two-transformer systems  
JUMPER  
WIRE  
THERMOSTAT  
Y
B
O
G
W
RC  
RH  
SYSTEM  
JUMPER  
WIRE  
JUMPER  
WIRE  
Cooling  
Fan  
THERMOSTAT  
SYSTEM  
System Relay  
Hot  
Y
B
O
G
W
RC RH  
24 VAC  
120 VAC  
Neutral  
Reversing Compressor Fan  
Valve*  
Contactor Relay  
TRANSFORMER  
Hot  
Figure 3. Typical wiring diagram for  
cool only, 3-wire, single transformer systems  
24 VAC  
120 VAC  
Neutral  
* Reversing valve is energized when the  
system switch is in the COOL position  
TRANSFORMER  
Figure 6. Typical wiring diagram for heat pump  
with reversing valve energized in COOL  
NOTE  
RED jumper wire (provided with thermostat) must be  
connected between thermostat RH and RC terminals  
for proper thermostat operation with this system.  
JUMPER  
WIRE  
JUMPER  
WIRE  
JUMPER  
WIRE  
THERMOSTAT  
Y
B
O
G
W
RC RH  
THERMOSTAT  
SYSTEM  
SYSTEM  
Y
B
O
G
W
RC RH  
Cooling  
System Relay  
Fan  
Heating  
System  
Reversing Compressor Fan  
Valve*  
Contactor Relay  
Hot  
Hot  
24 VAC  
120 VAC  
24 VAC  
120 VAC  
Neutral  
Neutral  
TRANSFORMER  
* Reversing valve is energized when the  
system switch is in the HEAT position  
TRANSFORMER  
Figure 7. Typical wiring diagram for heat pump  
with reversing valve energized in HEAT  
Figure 4. Typical wiring diagram for  
heat/cool, 4-wire, single transformer systems  
Cooling System  
Heating System  
1. Move SYSTEM switch to HEAT position. If the heating  
CAUTION  
!
system has a standing pilot, be sure to light it.  
Topreventcompressorand/orpropertydamage, ifthe  
outdoor temperature is below 50°F, DO NOT operate  
the cooling system.  
2. Press  
toadjustthermostatsettingaboveroomtempera-  
ture. The heating system should begin to operate.  
3. Press  
to adjust temperature setting below room tem-  
1. Move SYSTEM switch to COOL position.  
perature. The heating system should stop operating.  
2. Press  
toadjustthermostatsettingbelowroomtempera-  
ture.Theblowershouldcomeonimmediatelyonhighspeed,  
followed by cold air circulation  
3. Press  
to adjust temperature setting above room tem-  
perature. The cooling system should stop operating.  
3
OPERATION  
Before you begin using your thermostat, you should be familiar  
with its features and with the display and the location and  
operation of the thermostat buttons. Your thermostat consists of  
two parts: the thermostat cover and the base. To remove the  
cover, pullitstraightoutfromthebase. Toreplacethecover, line  
up the cover with the base and press until the cover snaps onto  
the base.  
1
2
FAN  
SYSTEM  
The Thermostat Buttons and Switches  
(see fig. 8)  
ON AUTO COOL OFF HEAT  
1
2
3
4
Raises temperature setting.  
Lowers temperature setting.  
3
4
6
FAN switch (ON, AUTO).  
°
F
°
C
SYSTEM switch (COOL, OFF, HEAT).  
BATTERY  
FILTER  
The Display  
5
5
9
8
7
5
Flame icon ( ) is displayed when the SYSTEM switch is in  
Figure 8. Thermostat display, buttons, and switches  
the HEAT position. Snowflake icon ( )is displayed (non-  
flashing)whentheSYSTEMswitchisintheCOOLposition.  
Snowflake is displayed (flashing) if the thermostat is in  
lockout mode to prevent the compressor from cycling too  
quickly.  
CONFIGURATION MENU  
The configuration menu allows you to set certain thermostat  
operating characteristics to your system or personal require-  
ments.  
6
7
Displays current temperature.  
Displays FILTER when the system has run for the selected  
Move SYSTEM switch to the OFF position, then press  
and  
filter time period as a reminder to change or clean your air  
filter.  
at the same time to enter the configuration menu. The  
display will show the first item in the configuration menu.  
8
9
Displays set point temperature (this is blank when SYS-  
TEM switch is in the OFF position).  
The configuration menu chart below summarizes the configura-  
tion options. An explanation of each option follows.  
Press  
and  
to change to the next menu item. To exit the  
Displays BATTERY and LO in the current temperature  
menu, move the SYSTEM switch to HEAT or COOL. If no keys  
are pressed within fifteen minutes, the thermostat will exit the  
configuration menu.  
location when the 2 "AA" batteries are low and should be  
replaced.  
Configuration Menu  
Step  
Press Button(s)  
Displayed (Factory Default) Press  
or  
to select:  
COMMENTS  
1
Set SYSTEM  
switch to OFF  
SYSTEM switch must be OFF to configure thermostat options  
Select FA or SL (Fast or Slow) heating cycle rate  
SL  
OFF  
0 to 1950 hours  
2
3
4
and  
and  
and  
and  
(FA)  
d-L  
(ON)  
Select display backlight OFF or ON  
Select Filter replacement run time  
FILTER  
(000)  
(in 50 hour increments)  
LOC  
(OFF)  
ON  
5
6
Select Compressor lockout OFF or ON  
Select temperature display adjustment higher or lower  
0 HI  
(0)  
4 LO to  
4 HI  
and  
and  
Select temperature display to °F or °C  
(°F)  
°C  
7
8
Returns to normal operation  
Set SYSTEM  
switch to HEAT  
or COOL  
* Press  
and  
to advance to next item  
4
2) 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 nor-  
mally 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 approxi-  
mately 1.5°F.  
3) Select Display Backlight (d-L OFF or ON) - The display  
backlight improves display contrast in low lighting condi-  
tions. SelectingbacklightONwillkeepthelightonforashort  
period of time after any key is pressed. Selecting OFF will  
keep the light off.  
SETTING THE THERMOSTAT  
This thermostat is very easy to operate. Set the SYSTEM switch  
to either HEAT or COOL then press  
or  
until the  
temperature you want to maintain is shown on the right side of  
the display. If you want to turn the system off, just move the  
SYSTEM switch to OFF.  
The FAN switch controls the fan operation. When the FAN  
switch is set to AUTO, the fan will cycle with the furnace or air  
conditioner. When the FAN switch is set to ON, the fan will run  
continuously, regardless of SYSTEM switch position.  
TROUBLESHOOTING  
4) Select filter replacement run time - The thermostat will  
display FILTER after the selected time of operation. This is  
a reminder to change or clean your air filter. This time can  
be set from 0 to 1950 hours in 50 hour increments. A  
selection of 000 will cancel this feature. When FILTER  
No Heating  
With the SYSTEM switch set to HEAT, when the setpoint  
temperature is raised or lowered past the room temperature,  
the thermostat will make a soft click sound. Usually, the sound  
indicates the thermostat is operating correctly. If the system  
does not come on, check the system or contact your heating/  
cooling service person. If the thermostat does not click try the  
Reset Operation listed below.  
is displayed, you can clear it by pressing  
and  
at  
the same time. This resets the timer and starts counting the  
hours until the next filter change.  
5) Select Compressor Lockout (LOC OFF or ON) - Select-  
ing 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  
compressor 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 (snowflake  
icon) for about five minutes then turn on the compressor.  
No Cooling  
Same procedure as heating except set SYSTEM switch to  
COOL. There can be up to a 5 minute compressor lock-out time  
delay before the thermostat clicks in COOL.  
Blank Display  
A blank digital display usually indicates the thermostat has  
received a voltage spike, static discharge or requires new  
batteries. If the display remains blank after replacing the  
batteries, see Reset Operation below.  
Reset Operation  
6) Select Temperature Display Adjustment (4 LO to 4 HI) - If a voltage spike or static discharge blanks out the display or  
Allows you to adjust the room temperature display 4° higher causes erratic thermostat operation you can reset the thermo-  
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.  
stat by pressing  
,
and move the SYSTEM switch from  
OFF to HEAT at the same time. This also resets the factory  
defaults to the configuration menu. If the thermostat has  
power, has been reset and still does not function correctly  
contact your heating/cooling service person or place of pur-  
chase.  
7) Select Temperature DIsplay (°F or °C) - Changes the  
display readout to Celsius 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 SETPOINT  
STORAGE — You can enter both your heating and cooling  
set points at the same time. There is no need to change the  
thermostat at the beginning of each season.  
CONFIGURATION MENU — Allows you to customize  
certain thermostat options.  
5

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