Lennox iComfort M30 Installation And Setup Manual page 19

Parameter Name
Stage Differential
Table 6. Parameter Descriptions
Definition
There are four options for stage differential:
• 1st Stage Differential: The default is 1.0°F. The first stage differential is the difference between
the equipment activation and deactivation temperatures. The first stage differential is used
in all models. It can be programmed between 0.5 and 8.0°F in 0.5°F steps.
• 2nd Stage Differential: The default is determined by the system setup. The second stage differential is
used in the multi-stage model only. The second stage differential is the difference in temperature between
the second stage activation and the first stage activation. It can be programmed between 0.5 and 8.0°F
in 0.5°F steps. If system has only 1st stage equipment, this item is hidden from installer screen.
• 3rd Stage Differential: This setting is used with the multi-stage model, in heat pump
applications only. The default is determined by the system setup. The third stage differential
is the difference in temperature between the third stage activation and the second stage
activation. It can be programmed between 0.5 and 8.0°F in 0.5°F steps. If system has no
more than three stages equipment, this item is hidden from installer screen.
• 4th Stage Differential: This setting is used with the multi-stage model, in heat pump
applications only. The default is determined by the system setup. The fourth stage differential
is the difference in temperature between the fourth stage activation and the third stage
activation. It can be programmed between 0.5 and 8.0°F in 0.5°F steps. If system does
not have fourth stage equipment, this item is hidden from installer screen.
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