Unoccupied Or Night Setback Mode; Wired Thermostat Mode; Room Sensor Mode; Gas And Electric Heat Warm-Up Mode (During Occupied Time Period) - Lennox Prodigy 2.0 Application Manual

3.3.10. Blower Off-Delay
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For electric heat units, the blower off is delayed 20 seconds (default) from the time the heating call is terminated. The blower
delay is adjustable using Parameter 60. Parameter range setting is 0 to 300 seconds. Go to SETTINGS > RTU OPTION
> EDIT PARAMETER = 60 (HT ELEC BLR OFF DELAY)
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For gas units, the blower off is delayed 120 seconds (default) from the time the heating call is terminated. The blower delay
is adjustable using Parameter 67. Parameter range setting is 80 to 300 seconds. Go to SETTINGS > RTU OPTION >
EDIT PARAMETER = 60 (HT ELEC BLR OFF DELAY)
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For gas units (A Box only), the blower off is delayed 180 seconds (default) from the time the heating call is terminated.
This value is fixed and cannot be changed.
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For cooling units, the blower off is delayed 0 seconds (default) from the time the cooling call is terminated. The blower delay
is adjustable using Parameter 80. Parameter range setting is 0 to 240 seconds. Go to SETTINGS > RTU OPTION > EDIT
PARAMETER = 80 (COOL BLR OFF DELAY)

3.3.11. Unoccupied or Night Setback Mode

During an unoccupied time period dampers do not operate at minimum position (no minimum ventilation requirements
during unoccupied period).

3.3.12. Wired Thermostat Mode

The unoccupied time period occurs when there is no input at A55_P297-8.

3.3.13. Room Sensor Mode

The occupied time period is controlled by the optional network control panel when installed. The 24VAC input at unit is ignored
while in room sensor mode except during back-up operation.

3.3.14. Gas and Electric Heat Warm-Up Mode (During occupied time period)

Many building codes require a percentage of fresh outdoor air when a conditioned space is occupied. A 24VAC input at unit
A55_P297-8 energizes the "occupied" (usually daytime) time period. A field-provided and -installed thermostat or energy
management system provides the input.
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The first 60 minutes (default) of the first heating demand of the occupied time period is called the warm-up mode.
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During the warm-up mode the M3 Unit Controller keeps economizer dampers closed to conserve energy (Parameter
58 and Parameter 65). Default for both parameters is 3584 seconds. Range setting is 0 to 8160 seconds.
Go to SETTINGS > RTU OPTION > EDIT PARAMETER = 59 (HT ELEC WARMUP DLAY)
Go to SETTINGS > RTU OPTION > EDIT PARAMETER = 65 (HT GAS WARMUP DELAY)
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The warm-up mode may be bypassed by going to the user interface and clear delays.
Go to SERVICE > OFFLINE > CLEAR DELAYS = YES or NO

3.3.15. Cool-Down Delay (During occupied time period)

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To conserve energy, the M3 Unit Controller ignores second-stage cooling demand and the economizer opens the first 30
minutes (default) OR one cooling cycle (whichever happens first) when the occupied time period starts. The cool-down delay
applies only when outdoor air is suitable for free cooling (Parameter 78).
Go to SETTINGS > RTU OPTION > EDIT PARAMETER = 78 (COOL DOWN DELAY)
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The cool-down delay may be bypassed by going to the user interface and clear delays.
Go to SERVICE > OFFLINE > CLEAR DELAYS = YES or NO
3.4. Gas Heat Operation—Gas Units
The Prodigy system has gas heat output control for up to two gas heat sections with two-stage gas valves.
NOTE: M3 Unit Controller controls the first heat circuit and C3 controls the second heat circuit. A first-stage heat demand
energizes the gas valve low fire and a second-stage heat demand energizes the high fire. On units that have two heat sections, a
first-stage heat demand energizes low fire on both gas valves and a second-stage heat demand energizes high fire on both gas
valves.
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