Robertshaw RS8110 Installation Manual page 16

INSTALLER SETUP MENU
Adjusting the Differential (Also called
Swing or Cycle rate)
The differential is adjustable, a smaller
differential will cause more frequent
cycles and a larger differential will
cause fewer cycles. There are separate
differentials for heat and for cool. Follow
the steps below to adjust the differential
for heat or cool:
Select HEAT or COOL with the system
1.
switch.
2. Hold down the and
+
together for 3 seconds.
3. Use the or key to adjust
+
the differential. The differential is
adjustable from ±0.2°F to ±2°F.
For example: A differential setting
of 0.5°F will turn the cooling on
at approximately 0.5°F above the
setpoint and turn the cooling off
at approximately 0.5°F below the
setpoint. The factory default for
cooling is 0.5°F and 0.4°F for heating.
14
Adjusting Room Temperature Calibration, Fahrenheit/Celcius Display and
Compressor Delay
4. Wait approximately 10 seconds for
the thermostat to return to normal
operation.
This feature allows the Installer to
change the calibration of the room
temperature display. For example: If the
thermostat reads 70° and you would like
it to read 72° then select +2. You can
adjust the room temperature display to
read -4°F to +4°F above or below the
keys
factory calibrated reading. Follow the
steps below to adjust the temperature
reading:
Select OFF with the system switch.
1.
2. Hold down the
together for 3 seconds.
3. Use the
+
temperature display.
4. Then press
(Fahrenheit) or C (Celsius) setting.
use to select.
+
and keys
+
key to adjust the room
to access the F
5. Press again to access the
compressor DELAY selection. The
compressor delay will not allow
the compressor to be turned on
for 5 minutes after the last time the
compressor was shutdown. Use
the to select ON or OFF. (ON
+
will prevent the compressor from
starting for at least 3 minutes). Wait
approximately 15 seconds or slide
the system switch to return to normal
operation.