Aprilaire 8244 Installation And Operation Manual Download Page 5

5

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 confi gure thermostat

2

  

 and 

*

 (FA)

SL

Select FA or SL (Fast or Slow) heating cycle rate

3

  

 and 

*

-L (ON)

OFF

Select backlight ON or OFF

4

  

 and 

*

OC (OFF)

ON

Select compressor lockout LOC OFF or ON

5

  

 and 

*

0 HI (0)

4 LO to 4 HI

Select temperature display adjustment higher or lower

6

  

 and 

*

(F)

C

Select temperature display to F or C

7

Move system 

switch from OFF to 

HEAT or COOL

Returns to normal operation

*Press 

 

and

 

 simultaneously to advance to next item.

CONFIGURATION MENU

The confi guration menu allows you to set certain thermostat 
operating characteristics to your system or personal requirements.

1.  With SYSTEM switch in “OFF” mode, press 

 and 

 keys 

at the same time to enter the confi guration menu. The display will 
show the initial item in the confi guration menu.

   The confi guration menu table summarizes the confi guration 

options. An explanation of each option follows.

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 normally 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 approximately 1.5°F.

3.  

Select Backlit Display

 – The display backlight improves display 

contrast in low lighting conditions. Selecting Backlight ON will 
keep the light on continuously. Selecting Backlight OFF will keep 
the light off.

4.  

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 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 fl ash the 

Snowfl ake icon

 

(

) for about fi ve minutes then turn on the compressor.

5.  

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 other temperature measuring devices.

6.  

Select °F or °C Readout

 – Changes the display readout to 

Celsius or Fahrenheit as desired.

SPECIFICATIONS

ELECTRICAL DATA

Electrical Rating:

 

20 to 30 VAC 50/60 Hz.

 

0.05 to 1.2 Amps (Load per terminal)

 

1.5 Amps Maximum Total Load

 (All terminals combined)

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:

 

-40°F to 150°F

CLEANING THE THERMOSTAT

If the surface of the thermostat becomes dirty it can be cleaned with 
plain water or a non-abrasive household cleaner including glass 
cleaner. When using any cleaner, be careful not to get any into the 

interior of the thermostat. 

Do not spray any liquid directly onto 

the thermostat.

 Spray the cleaner onto a soft cloth and wipe the 

surface of the thermostat. 

Summary of Contents for 8244

Page 1: ...it if needed Flat blade screwdriver Wire cutter stripper Level THERMOSTAT DETAILS Mounting hole Mounting hole Electric Gas Switch FIGURE 1 Thermostat Base Failure to follow and read all instructions carefully before installing or operating this control could cause personal injury and or property damage If you have any questions please call Research Products Corporation at 800 334 6011 ...

Page 2: ...Wall Furnaces No 12 VDC Mobile Home Application No Multi stage Systems No Systems Exceeding 30VAC 1 5 Amp No Requires common wire for 24VAC at the thermostat Terminal Cross Reference Chart New Thermostat Terminal Designation Other Manufacturers Terminal Designation RH 4 RH M R RC R R V G G G F G W W W H W Y Y Y C Y C C C X C Factory installed jumper wire between the RH and RC terminals must remain...

Page 3: ...UIPMENT IS OFF a Make sure the fan switch is set to Auto and the Mode switch is set to Off b Strip 3 of cable insulation c Strip 3 8 of insulation from each wire Do not cut into the wire when stripping insulation as this can lead to eventual control failure d Secure the wires to the thermostat terminal strip according to the wiring diagram for the model being installed see Figures 2 through 7 Use ...

Page 4: ...ure to be displayed go to menu mode and change the 6th option to C see Configuration Menu page 5 TEMPERATURE DISPLAY ADJUSTMENT Your new thermostat has been accurately set in our factory However if you wish you may adjust your new thermostat temperature display to match your old thermostat This can be accomplished within a 4 range by going into the menu mode see Configuration Menu page 5 NOTE To p...

Page 5: ... Backlight OFF will keep the light off 4 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 compressor from short cycling Some newer compressors already have a time delay buil...

Page 6: ...nu mode as mentioned in the instructions for Hydronic Heating Systems It is not possible to shorten the cycle time If an acceptable cycle rate is not achieved as received or by changing cycle time from FAST to SLOW on the menu mode contact a local service person for additional suggestions Cooling Cycles Too Fast or Too Slow narrow or wide temperature swing The location of the thermostat and or the...

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