System Functions - Lennox MS8 SERIES Installation And Service Procedures

SYSTEM FUNCTIONS

These systems have several functions which are addressed in this section. These functions are:
* Sleep
* Turbo
* Cold Blow Prevention (Heat Pumps Only)
SLEEP
When sleep function has been set properly , the setpoint will be increased by 1.8°F (1°C) after the sleep function has run for 1
hour, will be increased by another 1.8°F (1°C) after 2 hours and increased by another 1.8°F (1°C) after 3 hours. The setpoint
will be increased by 5.4°F (3°C) total in three hours. No further temperature adjustments will be made for the remainder of the
sleep function.
When sleep function has been set properly , the setpoint will be decreased by 1.8°F (1°C) after the sleep function has run for 1
hour, will be increased by another 1.8°F (1°C) after 2 hours and increased by another 1.8°F (1°C) after 3 hours. The setpoint
will be decreased by 5.4°F (3°C) total in three hours. No further temperature adjustments will be made for the remainder of
the sleep function.
TURBO
When turbo function is activated, the indoor fan speed and compressor frequency (speed) is increased to maximize the
delivery of cooled or heated air to the space.
Operational Mode
Cool
Dehumidification
Heat
Fan
Auto
Cooling or Dehumidification — Sleep Function
Heating — Sleep Function
SLEEP FUNCTION
FIGURE 59
TABLE 13
TURBO FUNCTION
Maximum Fan Speed
Maximum Speed
No Change
Maximum Speed
No Change
No Change
Page 43
Compressor Speed
Operating frequency + 10HZ
No Change
Operating frequency + 10HZ
No Change
No Change
Corp. 1244-L9