1 Service (continued)
Outdoor air shutdown differential
The outdoor air shutdown differential parameter is the number of degrees below parameter F5 the outdoor air temperature must go before the unit will respond to a SH demand. The temperature range of this parameter is 0°F (0°C) to 90°F (50°C). The default value is 10°F (5°C).
Shift reset curve
The shift reset curve parameter shifts the actual setpoint above or below the calculated setpoint the number of degrees in this parameter. The temperature range of this parameter is
Boost temperature
If a SH demand lasts longer than the programmed time delay setting (F9) and there have been no DHW demands, the control will increase the SH setpoint by the amount in this parameter. If the SH demand continues through another time period, the setpoint will be increased again. This will continue until either the SH demand ends, a maximum of 20 increases has occurred, or the SH user setpoint has been reached. Once the SH demand has been satisfied the setpoint will revert back to its calculated setting. The temperature range of this parameter is 0°F (0°C) to 45°F (25°C). The default value is 0°F (0°C). This feature will be active if this parameter is set to anything other than 0°F (0°C).
Boost time
The boost time parameter sets the amount of time that must elapse with a SH demand before the water temperature setpoint will be increased. The time range for this parameter is 1 minute to 250 minutes. The default value is 20 minutes.
Anti-cycling
Anti-cycle time
Once a demand has been satisfied, a set amount of time must elapse before the control will respond to a new demand. The control will block the new heat demand and
Anti-cycle override differential
The control will bypass the
Minimum On/Off delay Stages 1, 3
Whenever Stage 1 or Stage 3 (if used) starts or stops, a timer is started. This timer must expire before that stage can turn off or back on. The range of this parameter is 0 to 255 seconds. The default value is 60 seconds.
Next on delay
Whenever Stage 1 or Stage 3 (if used) turns on, a timer must expire before another Stage 1 or 3 can turn on, whether in the same heater, or in another heater in a Cascade. The range of this parameter is 0 to 255 seconds. The default value is 60 seconds.
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