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For gas units (Energence LG -3 to 6-ton), the blower off is delayed 180 seconds (default) from the time the heating call
is terminated. This value is fixed and cannot be changed.
For cooling units, the blower off is delayed 60 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)
On Energence Ultra High Efficiency 3- to 6-ton models blower off-delay is disable and not adjustable.
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.
The first 60 minutes (default) of the first heating demand of the occupied time period is called the warm-up mode.
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)
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)
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)
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
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